US20130256219A1 - Apparatus, system and process for wastewater purification - Google Patents
Apparatus, system and process for wastewater purification Download PDFInfo
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- US20130256219A1 US20130256219A1 US13/747,240 US201313747240A US2013256219A1 US 20130256219 A1 US20130256219 A1 US 20130256219A1 US 201313747240 A US201313747240 A US 201313747240A US 2013256219 A1 US2013256219 A1 US 2013256219A1
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/08—Aerobic processes using moving contact bodies
- C02F3/082—Rotating biological contactors
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Definitions
- Wastewater treatment systems are commonly used for purification of wastewater, sewage and the like, and allow for the return of the treated wastewater to the environment. However, it can be desirable to increase the efficiency and level of purification while decreasing the usage of chemical reagents as well as outside energy inputs.
- an apparatus for wastewater treatment may be disclosed.
- the apparatus can include a basin for receiving a liquid to be treated, the liquid having a direction of flow, and a plurality of pendant sheets for supporting the growth of microorganisms, disposed within the basin and in contact with the liquid wherein the pendant sheets are oriented parallel to the direction of flow of the liquid.
- the plurality of pendant sheets can further include a radicalized resin fiber network media and a thixed, prepromoted unsaturated wax orthopolyester resin coating.
- a system for wastewater treatment may be disclosed.
- the system can include at least one rotating biological processor and at least one pendant biological processor disposed downstream of the at least one rotating biological processor, wherein the at least one pendant biological processor further includes a basin for receiving wastewater, the wastewater having a direction of flow, and a plurality of pendant sheets for supporting the growth of microorganisms, disposed within the basin and in contact with the wastewater, the pendant sheets being oriented parallel to the direction of flow of the wastewater.
- a process for wastewater treatment may be disclosed.
- the process can include flowing wastewater into a basin, the basin having a plurality of pendant sheets suspended therein, flowing the wastewater in a direction parallel to the plurality of pendant sheets, and flowing the wastewater out of the basin, wherein the pendant sheets support the growth of microorganisms for treating the wastewater.
- FIG. 1 a is a schematic cross-sectional view of an exemplary embodiment of a rotating biological processor.
- FIG. 1 b is a schematic side view of an exemplary embodiment of a rotating biological processor.
- FIG. 2 a is a schematic side view of an exemplary embodiment of a pendant biological processor.
- FIG. 2 b is a schematic cross-sectional view of an exemplary embodiment of a pendant biological processor.
- FIG. 3 is a schematic of a first exemplary embodiment of a system for wastewater purification.
- FIG. 4 is a schematic of a second exemplary embodiment of a system for wastewater purification.
- FIG. 5 is a schematic of a third exemplary embodiment of a system for wastewater purification.
- FIG. 6 a is a schematic of a portion of a system for wastewater purification with an exemplary embodiment of an ultraviolet disinfection channel.
- FIG. 6 b is a schematic of an exemplary embodiment of an ultraviolet disinfection channel.
- FIG. 7 is a schematic side view of an exemplary embodiment of an integrated processing unit.
- the word “exemplary” means “serving as an example, instance or illustration.”
- the embodiments described herein are not limiting, but rather are exemplary only. It should be understood that the described embodiment are not necessarily to be construed as preferred or advantageous over other embodiments.
- the terms “embodiments of the invention”, “embodiments” or “invention” do not require that all embodiments of the invention include the discussed feature, advantage or mode of operation.
- Embodiments disclosed herein present an advanced technique for decomposing sewage and wastewater organic matters and removing suspended solids utilizing a synergetic process of microorganisms, a specialized host medium and supplemental air injection.
- the embodiments disclosed herein may be adapted for specific applications based on known formulas that take into account the parameters of the desired application. Such parameters may include, for example, pumping capacity, tank and basin capacity, loading rates, hydraulic residence time, mean cell residence time, air volume, overflow rates, and so forth.
- the embodiments disclosed herein may utilize various species of naturally occurring microorganisms in various controlled growing postures.
- the embodiments disclosed herein may incorporate a series type flow configuration whereby the sewage, wastewater or the like may undergo progressive degrees of purification by adsorption, absorption, and assimilation. This purification and contamination reduction can be facilitated by maintaining desired parameters of food to microorganism (F/M) ratio, mixed liquor suspended solids (MLSS), dissolved oxygen (DO) levels, and pH levels particularly.
- F/M food to microorganism
- MMS mixed liquor suspended solids
- DO dissolved oxygen
- the embodiments disclosed herein can include two interconnected specialized process units, each of which may be provided in any desired quantity for the particular application of the system.
- the specialized process units include a Rotating Biological Processor (RBP) and a Biological Pendant Processor (BPP).
- RBP Rotating Biological Processor
- BPP Biological Pendant Processor
- the RBP may be utilized as a first stage biological processor tank, while the BPP may be utilized as a second stage biological treatment tank.
- a rotating biological processor 100 may include a rotating biological processor contactor assembly 102 .
- the rotating biological processor contactor assembly 102 can provide a first stage host medium, and include a plurality of media disks 110 , which may be provided in desired types, forms and sizes, and mounted in parallel fashion in a spaced formation along a horizontal rotatable drive shaft 112 .
- the rotating biological processor contactor assembly 102 can include any desired amount of disks 110 , for example between about 10 disks and about 30 disks, or any other desired number of disks that enables the RBP to function as described herein.
- Exemplary RBP configurations may include 15, 20, 24, or 30 disks; however, any number of disks may be contemplated and provided as desired.
- the disks 110 may include a radicalized resin fiber network media, which may be constructed from a material such as Saran®, manufactured by Asahi-Dow, a polyvinylidene monofilament material, or any similar material that enables the RBP to function as described herein.
- the radicalized resin fiber network media may further include a thixed, prepromoted unsaturated wax orthopolyester resin, for example Eterset 2597 APTC-M2, or any similar material that enables the RBP to function as described herein.
- the resin may be applied to the fiber network media by any known manner, for example spray coating.
- the resin may serve to increase the homogeneity of the stranded network media, strengthen the mechanical resilience of the irregularly entangled radicalized media and further provide an added protective layer.
- the network media may be cut and tailored into six substantially equally shaped pieces. The pieces, when fitted to the carrying structure included herein, can be shaped as a circular media disk.
- the coated resin fiber network media used herein may be about 40-60 mm in thickness, for example about 50 mm, may have a linear mass density of about 3500-4500 denier, for example 4000 denier, and may have a void ratio of above approximately 95.0%, for example 97.0% and above.
- the resin fiber entangled network media disk can allow the contaminated effluent containing organic matter, suspended solids, and the like to easily flow up, down, back and forth through the reticular mesh when the disk is rotating. Along with the wastewater, this can provide for the introduction of ambient air in, around and throughout the entangled stranded media disk, where an evolving thin coat of microorganisms can be sustained on the individual resin strands.
- the microorganisms that are used to seed the media disks can be desired naturally occurring Bacillus species bacteria, various rotifers, protozoa and metazoa.
- the carrying structure of the RBP 100 can include the main carrier shaft 112 , shaft ends 114 , and middle and end support frames 116 , 118 coupled to the main carrier shaft 112 .
- the support frames 116 , 118 can include multiple horizontal rod stock 120 having threaded ends for supporting the circular resin fiber network media disks 110 .
- the carrying structure of the RBP 100 may be constructed of stainless steel materials, or any other suitable material for the application.
- the fiber network media disks 110 may be separated by attendant hollow end-flanged spacers 122 of requisite sizing which can slide onto the support rod stock 120 between the media disks 110 , the support rod stock 120 being coupled to the middle and end support frames 116 , 118 on the main carrier shaft 112 with washers, nuts, or any other suitable coupling.
- RBP units having less than 20 disks may include two end support frames 118 , with media disks 110 mounted between the end support frames 118 , separated by spacers 122 .
- RBP units having 20 or more disks may include end support frames 118 mounted at the ends of the main carrier shaft 112 , and may include a center support frame 116 mounted proximate the center of the main carrier shaft 112 .
- Media disks 110 may be mounted between each end support frame 118 and the center support frame 116 , and may be separated by spacers 122 , substantially as shown in FIG. 1 a.
- the main carrier shaft 112 and other components of the RBP assembly are mounted in commensurately sized carrier bearings 122 , the quantity, sizes, and loading rates of which may be determined for a particular wastewater treatment project via the appropriate calculations.
- the carrier shaft 112 may be provided with a 60% overload safety factor to support the media disks 110 and other components.
- the carrier bearings 122 may be provided based on the combined load weight of the carrier shaft 112 and the components supported thereon.
- the carrier shaft 112 may be coupled to a variable frequency drive motor and may be adapted to operate at any desired rotational speed, for example within a range of about 1 to 6 rpm, depending on the dissolved oxygen level, wastewater load rate and other variables of the particular application.
- Carrier shaft 112 may be coupled to motor 124 by an endless belt 126 , or by any other suitable drive coupling.
- the tank or basin of the RBP 100 may be formed from any suitable materials, and may be disposed either above ground, partially above ground or in situ. The tank or basin may function as the containment unit for the sewage or wastewater influent being treated, and may be sized according to the particular project design calculations.
- the RBP 100 may be mounted such that about 40% of the circular shaped resin fiber network media disks are immersed in the wastewater, thereby soaking that portion of the resin fiber network media with raw effluent as it rotates through the unit. This allows for the wastewater to be engaged by the microorganisms which are attached to the resin fiber network media, thereby resulting in contaminant reduction and purification.
- a water volume adjuster 128 may be provided within RBP 100 so as to maintain a desired water level in the tank or basin.
- the Biological Pendant Processor 200 may be downstream of the RBP 100 and receive the effluent therefrom.
- the BPP 200 can include a tank or basin constructed of any suitable materials, and may further include a plurality of sheet-like pendants 210 .
- the quantity, sizes and loading rates of the pendants 210 may be for a particular wastewater treatment project via the appropriate calculations, and further in accordance with and incidental to the accomplished level of treatment in the upstream RBP 100 .
- the sheet-like pendants 210 may be arranged and suspended in parallel fashion as well in a spaced formation. The thinnest dimension of the pendants 210 when suspended may be oriented such that the flow direction of the effluent is substantially parallel to the planes of pendants 210 .
- the sheet-like pendants may be constructed from a material such as Saran®, manufactured by Asahi-Dow, a polyvinylidene monofilament material, or any similar material that enables the BPP to function as described herein.
- the radicalized resin fiber network media may further include a thixed, prepromoted unsaturated wax orthopolyester resin coating, for example, Eterset 2597 APTC-M2, or any similar material that enables the BPP to function as described herein.
- the resin may be applied to the fiber network media by any known manner, for example, spray coating.
- the resin may serve to increase the homogeneity of the stranded network media, strengthen the mechanical resilience of the irregularly entangled radicalized media and further provide an added protective layer.
- the fiber network media may optimally be cut and tailored into singular equally sized pendants adapted for a particular project application.
- the sheet-like pendants 210 can allow a substantially unrestricted flow of the treatable influent in, around and through each pendant, in part due to the void ratio and stranded construction of the resin fiber network.
- the void ratio of the entangled media may be above approximately 95.0%, for example 97.0% and above.
- Each sheet-like pendant may be suspended from a support 212 , which may be constructed from stainless steel or any other appropriate material, and may be appropriately engineered for the particular project application.
- the sheet-like pendants 210 can provide a surface for supporting the growth of microorganisms, thereby facilitating the microorganisms to decompose and purify residual contaminants and pollutants contained in the sewage and wastewater.
- the microorganisms that are used to seed pendant media 210 may be, for example, desired naturally occurring Bacillus species bacteria, various rotifers, protozoa and metazoa.
- Known nutrient activators appropriate for the particular treatment application may be utilized to stimulate growth of microorganisms during initial treatment process startup.
- the coated resin fiber network media utilized for the pendants 210 may be about 20-30 mm in thickness, for example 25 mm.
- the coated resin fiber network media may further have a linear mass density of about 500-1500 denier, for example 900denier, and may be cut to width and length as appropriate for the particular application.
- the custom cut piece of resin fiber network media can then be fitted with end pieces.
- the end pieces may be formed from a material such as nylon and then cut and seamed down the sides thereof.
- the width of the end pieces can be substantially similar to the width of the pendant media.
- the nylon material may be cut into lengths of approximately 10 inches, and folded over each end of the pendant media, such that an approximately 2.5-3 inch loop of material remains beyond the cut end of the pendant media.
- 2 rows of double nylon stitching, approximately 1 inch apart may be sewn through the end piece and the resin fiber media such that the fiber media is sandwiched between the two longitudinal edges of the end piece.
- the loop of excess material can facilitate hanging the pendant from the support.
- the pendant media can then be suspended by inserting an appropriately sized stainless steel length of pipe 214 , which may be approximately 0.75 inches in diameter, through the end piece loop on the pendant and subsequently inserting the pipe into the support frame 212 .
- the support frame 212 can include a plurality of equally spaced notches sized to receive portions of the pipe 214 so as to maintain the pipe 214 suspended at a height that facilitates suspending the pendant media 210 from the pipe 214 .
- a stainless steel rod 216 having a diameter of approximately 1 inch and a length substantially equal to the width of the pendant, can then be inserted through the bottom loop on the pendant 210 .
- the mass of the rod 216 can be sufficient to provide weight to the suspended pendant media so as to hold it in a substantially vertical position while resisting liquid turbulence.
- any other structure or weight for maintaining the pendant media in a substantially vertical position may be utilized.
- the BPP 200 can function as a combination subsequent stage biological processor and aeration basin. Utilizing the BPP 200 in conjunction with the RBP 100 can result in an improved level of floc and consequently an improved settleability rate in the sedimentation tank, without the use of any polymer coagulants.
- the RBP 100 and BPP 200 may be configured to operate in a series configuration, or in a parallel configuration where appropriate. For example in situations where kind and degree of contaminants needing treatment becomes substantially higher, the parallel configuration may be used.
- the parallel configuration may be as follows: the influent can be split and deployed to a plurality of RBPs 100 installed in parallel, with the residual effluent from those units consolidated and directed to a subsequent RBP unit or set of RBP units for further treatment. The effluent from the subsequent unit or units can then be deployed to appropriately sized BPP units 200 , which may be installed in parallel, to undergo the additional treatment and purification as described above.
- both the Rotating Biological Processor 100 and the Biological Pendant Processor 200 units may include fine bubble tubular diffusers 9 disposed therein for inoculating the wastewater with supplemental air.
- the quantity and size of tubular diffusers 9 may be determined as a result of the calculations performed for a particular wastewater treatment project and the extent of aeration needed therefor.
- the tubular diffusers 9 may be located on and parallel to the sidewall of the basin opposite of the location of wastewater inflow.
- the tubular diffusers 9 can be oriented perpendicularly to the plurality of media disks.
- the air bubble diffusers 9 can further be situated such that the mid point of the side of the arc of the tubular diffuser 9 and the mid point of the side of the arc of the circular resin fiber network media are in vertical alignment at those corresponding points, with the highest arc of the diffuser being at least 1.5 feet below the lowest point of the media arc. It should be appreciated that the direction of rotation of the rotating media should be such that as the fine bubbles rise the media rotates downward into the bubbles. Such a direction of rotation facilitates increased mixing and interaction of the contaminants, supplemental air and microorganisms on the host media.
- the Dissolved Oxygen (DO) levels in the RBP unit 100 can be maintained within a range of approximately 1-3 mg/l, or within a narrower range of approximately 1.5-2 mg/l. It should be appreciated that multiple factors may influence the DO level within the RBP unit 100 , for example the contaminant level of the influent being treated, the wastewater temperature, the ambient air temperature as the resin fiber network media rotates out of the influent, the speed which the media is rotating and the supplemental air pressure and temperature. It should further be appreciated that such factors may affect the treatment success and process monitoring information.
- the tubular diffusers 9 can perform dual functions, specifically aeration and mixing. Since the BPP 200 can lack a mechanical stirrer, the introduction of air through the diffusers 9 can function as the motivation force to circulate the wastewater.
- the tubular diffusers 9 may be positioned such that the longitudinal axes thereof are disposed perpendicular to the planes of the resin fiber network media pendants.
- the diffusers 9 can be mounted between the point of inflow and the media pendants, or, if multiple parallel supports of the media pendants are provided, the diffusers 9 can be mounted between the plurality of supports but not between the furthest supports adjacent to the discharge overflow tube/weir, and the discharge overflow tube/weir itself.
- the diffusers 9 may be mounted approximately 6-8 inches above the bottom of the basin of the BPP 200 .
- the air exiting diffusers 9 may cause the movement of the wastewater in random swirling eddies, thereby continuously mixing and moving the wastewater, while simultaneously introducing new air into the BPP 200 and causing the MLSS to make contact with the microorganisms on the host media pendant.
- the DO levels in the BPP unit 200 can be maintained within a range of approximately 3-5 mg/l, or within a narrower range of approximately 4-4.5 mg/l.
- Both the Rotating Biological Processor 100 and the Biological Pendant Processor 200 units may further include subsurface air manifolds 10 disposed within the RBP and BPP containment basins.
- Manifolds 10 may be sized, constructed and bored according to calculations performed to determine the needs of the particular sewage, wastewater or the like project.
- Air manifolds 10 may include a plurality of lateral pipes, and each lateral pipe may include a plurality of orifices spaced along the undersides thereof.
- the orifices may be sized and shaped to emit coarse air bubbles.
- the orifices may have a diameter of approximately 1 ⁇ 8 inch.
- the manifold pipes may be mounted such that the bottoms of the pipes are at most 3 inches above the bottom of the containment basin.
- Airflow to each lateral pipe, or a plurality of lateral pipes may be controlled by at least one valve, for example a ball valve, and may be controlled manually, electrically or pneumatically, depending on the design of the particular sewage or wastewater project and the degree of automation desired.
- a ball valve for example a ball valve
- Airflow to each lateral pipe, or a plurality of lateral pipes may be controlled by at least one valve, for example a ball valve, and may be controlled manually, electrically or pneumatically, depending on the design of the particular sewage or wastewater project and the degree of automation desired.
- the subsurface air manifold system 10 in the RBP units 100 and BPP units 200 may facilitate creating a disruptive force on the settled solids, thereby promoting the resuspension thereof, and facilitating the settled solids to re-contact the resin fiber network media. This can be accomplished by providing pressurized airflow to the lateral pipes at desired intervals and for desired durations. For example, in the RBP units 100 , airflow may be provided at a bidaily frequency for a duration of approximately one minute. In the BPP units 200 , airflow may be provided at a frequency of approximately once every 4-days, and for a duration of approximately 1-1.5 minutes. The result of such air scouring functionality can be a reduction of wasted sludge in the processor units.
- the subsurface air manifold system 10 can facilitate cleaning of a processor basin when necessary, for example by substantially disturbing the bottom of the containment basin by increasing the air pressure provided through the manifold 10 and allowing the scouring to proceed during the liquid purging of the processor units.
- the desired volume and pressure of air may be determined by the calculations for a particular sewage or wastewater treatment project, and may be provided by known blowing units.
- exemplary embodiments of systems for sewage and wastewater purification treatments may be disclosed.
- the embodiments of systems disclosed herein can include the RBP 100 and BPP 200 to provide advantageous treatment of sewage and wastewater, as described above.
- One exemplary embodiment of the system for sewage and wastewater purification treatment may be configured to accomplish decomposition and purification of sewage and wastewater to a quality higher than commonly rated as secondary level.
- Other exemplary embodiments of the system for sewage and wastewater purification treatment may be configured to accomplish decomposition and purification of sewage and wastewater to a quality commonly rated as tertiary level non-potable.
- System 300 can include a general automatic screening device 2 and screening compactor 2 a, an equalization basin 3 , a flow adjustment tank 6 , first stage biological processor tanks, which may be RBP tanks 100 a, 100 b, with rotary media disk assembly 102 , at least one second stage biological processor tank, which may be a BPP tank 200 with stationary pendant media for microbe adherence 210 , a sedimentation tank 14 , and a sludge dewatering device 17 .
- first stage biological processor tanks which may be RBP tanks 100 a, 100 b, with rotary media disk assembly 102
- second stage biological processor tank which may be a BPP tank 200 with stationary pendant media for microbe adherence 210
- sedimentation tank 14 a sedimentation tank 14
- sludge dewatering device 17 a sludge dewatering device
- the general automatic screening device 2 for removing coarse contaminants can remove suspended solids greater than 5 mm in size from the inflowing sewage and wastewater via an inlet pipe 1 .
- the effluent can move to equalization basin 3 , while the coarse contaminant removed by screening device 2 can be moved to a screening compactor 2 a, whereby the captured screenings may be washed and compressed.
- the decant liquid 2 b from screening compactor 2 may be moved to equalization basin 3 while the compacted screenings 2 c can be disposed offsite.
- the equalization basin 3 is where the influent may be temporarily staged to allow the varying inflow rates to intermix. Such influent blending facilitates increasing the overall wastewater uniformity, quality and treatment efficiency.
- Equalization basin 3 can include an air distribution pipe 4 and an air supply pipe 11 a which may be pressurized by air supplied by at least one blower 11 , via an air pressure regulator 11 b disposed inline at each installed air supply pipe 11 a so as to appropriately regulate the necessary air delivery rate.
- the appropriate airflow rate per minute and per unit volume can be computed for each specific treatment application. Injecting air into equalization basin 3 can facilitate reducing the likelihood of the stratification of suspended solids which may result in surface caking or solids deposition, as well as reducing the likelihood of putrefaction occurring.
- a raw water feed pump 5 may be provided to transfer the influent from equalization tank 3 to flow adjustment tank 6 .
- Flow adjustment tank 6 may be provided to distribute the sewage and wastewater such that the influent flows uniformly into each RBP tank 100 a, 100 b or similarly to all and any first stage biological processors engaged in the sewage and wastewater treatment process.
- the appropriate sizes of RBP tanks 100 a, 100 b may be determined according to computations from known factors for a specific treatment application.
- Each RBP tank 100 a, 100 b may include a bottom drain, sludge pump, or access port for cleaning.
- Each RBP tank 100 a, 100 b can further include a rotating biological processor contactor assembly 102 , which can provide a first stage host medium, and can include a plurality of media disks.
- the rotating biological processor contactor assembly 102 can include any desired amount of disks, for example between 10 disks and 30 disks, which can provide a surface for supporting the growth of microorganisms, and facilitate the microorganisms to decompose and purify contaminants and pollutants contained in the sewage and wastewater that inflows from flow adjustment tank 6 .
- the microorganisms that are used to seed the RBP tank 100 a, 100 b and more specifically the rotating biological processor contactor assembly 102 can be desired naturally occurring Bacillus species bacteria, various rotifers, protozoa and metazoa.
- Known nutrient activators appropriate for the particular treatment application may be utilized to stimulate growth of microorganisms during initial treatment process startup.
- the RBP tanks 100 a, 100 b may include fine air bubble tubular diffusers 9 and subsurface air manifold pipes 10 .
- the air devices 9 , 10 may be supplied with air generated by at least one blower 11 and may be sized according to computations for a specific treatment application.
- the air supplied by at least one blower 11 to fine air bubble tubular diffusers 9 via air regulator 1 lb and air pipe 11 a in the RBP tanks 100 a, 100 b may have dual functionality.
- the air supplied via diffusers 9 can provide a supplemental air supply to facilitate maintaining appropriate dissolved oxygen levels in RBP tanks 100 a, 100 b .
- the air supplied via diffusers 9 can facilitate dislodging and sloughing off excess or old biomass from the biofilm layer on rotating biological processor contactor assembly 102 .
- the air supplied by at least one blower 11 to subsurface air manifold 10 in the RBP tanks 100 a, 100 b may have dual functionality.
- the air supplied via manifold 10 may facilitate scouring the bottom of the tank.
- the scouring functionality may be initiated for a desired period of time and at a desired interval, for example, on a bidaily basis to facilitate resuspension of settled solids.
- the air supplied via manifold 10 can reduce the likelihood of solids accumulating and decaying, thereby reducing the likelihood of objectionable odors.
- Both air systems 9 , 10 may additionally contribute to maintaining and cleaning passageways in the radicalized resin fiber media and reducing the likelihood of weight overload on the shaft of rotating biological processor contactor assembly 102 .
- At least one BPP tank 200 and any other second stage biological processors engaged in sewage and wastewater treatment for a specific application may be downstream of and may receive the outflow from RBP tanks 100 a, 100 b.
- BPP tank 200 may include a drain or waste sludge pump for cleaning purposes.
- BPP tank 200 can further include a plurality of pendant media sheets 210 .
- the appropriate size and quantity of the pendant media sheets 210 may be determined according to computations from known factors for a specific treatment application.
- Pendant media sheets 210 can facilitate the second stage biological process and can provide a surface for supporting the growth of microorganisms, thereby facilitating the microorganisms to decompose and purify residual contaminants and pollutants contained in the sewage and wastewater. The sewage and wastewater is thus purified while in tank 200 .
- the microorganisms that are used to seed BPP 200 and, more specifically, pendant media 210 may be, for example, desired naturally occurring Bacillus species bacteria, various rotifers, protozoa and metazoa.
- Known nutrient activators appropriate for the particular treatment application may be utilized to stimulate growth of microorganisms during initial treatment process startup.
- the BPP 200 may be constructed with both tubular fine air bubble diffusers 9 and subsurface air manifold pipes 10 . These air devices may be supplied with air generated by at least one blower 11 and may be sized according to computations for a specific treatment application.
- the air supplied by at least one blower 11 to tubular fine bubble air diffusers 9 via air pipe 11 a and inline air regulator 11 b may have multiple functionality.
- the air may provide two equal and simultaneous functions, those being to inoculate the wastewater with oxygen and to mobilize the mixed liquor suspended solids (MLSS) in the BPP tank 200 .
- the rate of air supplied to the fine bubble tubular diffusers 9 can be provided so as to maintain the appropriate dissolved oxygen level in the wastewater in the BPP tank 200 .
- the wastewater can circulate with turbulent flow, causing the MLSS to mix and chum throughout BPP tank 200 and further causing the sewage and wastewater to come in contact with the microorganisms on pendant media sheets 210 . This contact can allow further effluent purification to occur.
- the air supplied by at least one blower 11 through air pipe 11 a to subsurface air manifold 10 in the BPP tanks 200 may also have dual functionality.
- the air supplied via manifold 10 may facilitate scouring the bottom of the tank.
- the scouring functionality may be initiated for a desired period of time and at a desired interval, for example, on a four-day interval basis to facilitate resuspension of settled solids.
- the air supplied via manifold 10 can reduce the likelihood of solids accumulating and decaying, thereby reducing the likelihood of objectionable odors.
- Both air systems 9 , 10 may additionally contribute to ongoing sloughing of excess biofilm from pendant media sheets 210 during the treatment process.
- At least one sedimentation tank 14 can facilitate separation of the treated MLSS outflowing from BPP tank 200 .
- the appropriate size for the sedimentation tank 14 can be determined according to computations from known factors for a specific treatment application.
- the majority of solids inflowing into sedimentation tank 14 can settle to the bottom and may be mechanically directed to a sludge pit or trough.
- the supernatant liquid can overflow a notched weir and can be directed to the outflow trough for discharge 14 a or further treatment, depending on the specific treatment application needs.
- a portion of the precipitated sludge 14 b from sedimentation tank 14 may be pumped out via a return sludge pump 15 and pipe 15 a as return activated sludge.
- the appropriate pumping interval and duration of pumping may be determined according to computations from known factors for a specific treatment application.
- the return pumping of the precipitated sludge can facilitate resupplying microorganisms to flow adjustment tank 6 for further dispersal of the microorganisms in and through first stage biological processor tanks 100 a, 100 b and second stage biological processor tank 200 .
- An excess sludge pump 16 may be employed to pump excess precipitated sludge from sedimentation tank 14 and to move the excess sludge to a dewatering device 17 .
- the type of dewatering device may be determined according to the specific treatment application.
- the sludge cake 17 b from dewatering device 17 may be disposed offsite, while the decant 17 a may be returned to flow adjustment tank 6 .
- System 400 can include a general automatic screening device 2 and screening compactor 2 a, an equalization basin 3 , a flow adjustment tank 6 , first stage biological processor tanks, which may be RBP tanks 100 a, 100 b, with rotary media disk assembly 102 , at least one second stage biological processor tank, which may be a BPP tank 200 , with stationary pendant media for microbe adherence 210 , a sedimentation tank 14 , a sludge dewatering device 17 , a supernatant filtering device 18 , a flow meter device 19 , and ultraviolet (UV) disinfection components 20 .
- first stage biological processor tanks which may be RBP tanks 100 a, 100 b, with rotary media disk assembly 102
- second stage biological processor tank which may be a BPP tank 200 , with stationary pendant media for microbe adherence 210 , a sedimentation tank 14 , a sludge dewatering device 17 , a supernatant filtering device 18 , a flow meter device 19 , and
- the general automatic screening device 2 for removing coarse contaminants can remove suspended solids greater than 5 mm in size from the inflowing sewage and wastewater via an inlet pipe 1 .
- the effluent can move to equalization basin 3 , while the coarse contaminant removed by screening device 2 can be moved to a screening compactor 2 a, whereby the captured screenings may be washed and compressed.
- the decant liquid 2 b from screening compactor 2 may be moved to equalization basin 3 while the compacted screenings 2 c can be disposed offsite.
- the equalization basin 3 is where the influent may be temporarily staged to allow the varying inflow rates to intermix. Such influent blending facilitates increasing the overall wastewater uniformity, quality and treatment efficiency.
- Equalization basin 3 can include an air distribution pipe 4 and an air supply pipe 11 a which may be pressurized by air supplied by at least one blower 11 , via an air pressure regulator 11 b disposed inline at each installed air supply pipe 11 a so as to appropriately regulate the necessary air delivery rate.
- the appropriate airflow rate per minute and per unit volume can be computed for each specific treatment application. Injecting air into equalization basin 3 can facilitate reducing the likelihood of the stratification of suspended solids which may result in surface caking or solids deposition, as well as reducing the likelihood of putrefaction occurring.
- a raw water feed pump 5 may be provided to transfer the influent from equalization tank 3 to flow adjustment tank 6 .
- Flow adjustment tank 6 may be provided to distribute the sewage and wastewater such that the influent flows uniformly into each RBP tank 100 a, 100 b or similarly to all and any first stage biological processors engaged in the sewage and wastewater treatment process.
- the appropriate sizes of RBP tanks 100 a, 100 b may be determined according to computations from known factors for a specific treatment application.
- Each RBP tank 100 a, 100 b may include a bottom drain, sludge pump, or access port for cleaning.
- Each RBP tank 100 a, 100 b can further include a rotating biological processor contactor assembly 102 .
- the rotating biological processor contactor assembly 102 can provide a first stage host medium, and can therefore include a plurality of media disks.
- the rotating biological processor contactor assembly 102 can include any desired amount of disks, for example between 10 disks and 30 disks, which can provide a surface for supporting the growth of microorganisms, and facilitate the microorganisms to decompose and purify contaminants and pollutants contained in the sewage and wastewater that inflows from flow adjustment tank 6 .
- the microorganisms that are used to seed the RBP tank 100 a, 100 b and more specifically the rotating biological processor contactor assembly 102 can be, for example, desired naturally occurring Bacillus species bacteria, various rotifers, protozoa and metazoa.
- Known nutrient activators appropriate for the particular treatment application may be utilized to stimulate growth of microorganisms during initial treatment process startup.
- the RBP tanks 100 a, 100 b may include fine air bubble tubular diffusers 9 and subsurface air manifold pipes 10 .
- the air devices 9 , 10 may be supplied with air generated by at least one blower 11 and may be sized according to computations for a specific treatment application.
- the air supplied by at least one blower 11 to fine air bubble tubular diffusers 9 via air regulator 11 b and air pipe 11 a in the RBP tanks 100 a, 100 b may have dual functionality.
- the air supplied via diffusers 9 can provide a supplemental air supply to facilitate maintaining appropriate dissolved oxygen levels in process tanks 100 a, 100 b .
- the air supplied via diffusers 9 can facilitate dislodging and sloughing off excess or old biomass from the biofilm layer on rotating biological processor contactor assembly 102 .
- the air supplied by at least one blower 11 to subsurface air manifold 10 in the RBP tanks 100 a, 100 b may have dual functionality.
- the air supplied via manifold 10 may facilitate scouring the bottom of the tank.
- the scouring functionality may be initiated for a desired period of time and at a desired interval, for example, on a bidaily basis to facilitate resuspension of settled solids.
- the air supplied via manifold 10 can reduce the likelihood of solids accumulating and decaying, thereby reducing the likelihood of objectionable odors.
- Both air systems 9 , 10 may additionally contribute to maintaining and cleaning passageways in the radicalized resin fiber media and reducing the likelihood of weight overload on the shaft of rotating biological processor contactor assembly 102 .
- At least one BPP tank 200 and any other second stage biological processors engaged in sewage and wastewater treatment for a specific application may be downstream of and may receive the outflow from RBP tanks 100 a, 100 b.
- the at least one BPP tank 200 may include a drain or waste sludge pump for cleaning purposes.
- the BPP tank 200 can further include a plurality of pendant media sheets 210 .
- the appropriate size and quantity of the pendant media sheets 210 may be determined according to computations from known factors for a specific treatment application.
- Pendant media sheets 210 can facilitate the second stage biological process and can provide a surface for supporting the growth of microorganisms, thereby facilitating the microorganisms to decompose and purify residual contaminants and pollutants contained in the sewage and wastewater. The sewage and wastewater is thus purified while in tank 200 .
- the microorganisms that are used to seed BPP 200 and more specifically pendant media 210 may be, for example, desired naturally occurring Bacillus species bacteria, various rotifers, protozoa and metazoa.
- Known nutrient activators appropriate for the particular treatment application may be utilized to stimulate growth of microorganisms during initial treatment process startup.
- the at least one BPP tank 200 may be constructed with both tubular fine air bubble diffusers 9 and subsurface air manifold pipes 10 . These air devices may be supplied with air generated by at least one blower 11 and may be sized according to computations for a specific treatment application.
- the air supplied by at least one blower 11 to tubular fine bubble air diffusers 9 via air pipe 11 a and inline air regulator 11 b may have multiple functionality.
- the air may provide two equal and simultaneous functions, those being to inoculate the wastewater with oxygen and to mobilize the MLSS in the biological processor tank 200 .
- the rate of air supplied to the fine bubble tubular diffusers 9 can be provided so as to maintain the appropriate dissolved oxygen level in the wastewater in the processor tank 200 .
- the wastewater can circulate with turbulent flow, causing the MLSS to mix and churn throughout the BPP tank 200 and further causing the sewage and wastewater to come in contact with the microorganisms on pendant media sheets 210 . This contact can allow further effluent purification to occur.
- the air supplied by at least one blower 11 through air pipe 11 a to bottom air manifold 10 in the BPP tanks 200 may also have dual functionality.
- the air supplied via manifold 10 may facilitate scouring the bottom of the tank.
- the scouring functionality may be initiated for a desired period of time and at a desired interval, for example, on a four-day interval basis to facilitate resuspension of settled solids.
- the air supplied via manifold 10 can reduce the likelihood of solids accumulating and decaying, thereby reducing the likelihood of objectionable odors.
- Both air systems 9 , 10 may additionally contribute to ongoing sloughing of excess biofilm from pendant media sheets 210 during the treatment process.
- At least one sedimentation tank 14 can facilitate separation of the treated MLSS outflowing from BPP tank 200 .
- the appropriate size for the sedimentation tank 14 can be determined according to computations from known factors for a specific treatment application. If desired for a specific treatment application, further purification of treated sewage and wastewater out flowing from sedimentation tank 14 can be achieved by a filtration device 18 .
- the appropriate type, kind and capability of filtration device 18 may be determined by computation for a specific treatment application, and filtration device 18 may be a filtering device known in the art.
- Filtration device 18 disposed between sedimentation tank 14 and UV disinfection units 20 can facilitate removing any residual very fine suspended solids so as to achieve a supernatant reading of approximately two nephelometric turbidity units (NTU). Filtered solids 18 a removed by filtration device 18 can then be moved to dewatering device 17 , while the supernatant filtrate 18 b may be moved to flow meter 19 and subsequently to UV light units 20 for disinfection.
- NTU nephelometric turbidity units
- UV light units 20 may be configured such that the supernatant filtrate 18 b inflows to a series of at least two UV light units, wherein supernatant filtrate 18 b may be disinfected. Disinfection of supernatant filtrate 18 b by the UV light units can involve the elimination of any living organism in the supernatant filtrate. Redundant UV light units 20 may be provided so as to accommodate servicing and lamp replacement without sacrificing treatment and disinfection efficacy, as well as to satisfy regulatory standards for process redundancy, performance consistency, and capability. To this end, a plurality of parallel pathways 21 a, 21 b for supernatant filtrate flow may be provided. The parallel pathways 21 a , 21 b may be operated one at a time.
- the supernatant filtrate flow may be directed, for example by a valve, through pathway 21 a or through pathway 21 b. This can allow the inactive pathway to be appropriately cleaned and any necessary components replaced. Furthermore, an additional UV light unit 20 may be provided downstream of both pathway 21 a and 21 b.
- a single UV light disinfection channel 22 may be provided in lieu of light units 20 and channels 21 a, 21 b.
- the single channel 22 as shown in FIG. 6 b , multiple independent banks 23 of removable UV lights can be disposed, with the design and specifications of the lights being determined by calculations known in the art.
- Each light bank 23 may be operated independently of the other light banks 23 .
- only a single light bank 23 may be deactivated at a time, thereby providing a quantity of operating lamps to meet the above-described standards.
- a portion thereof may be pumped via a return sludge pump 15 and pipe 15 a as return activated sludge.
- the appropriate pumping interval and duration of pumping may be determined according to computations from known factors for a specific treatment application.
- the return pumping of the precipitated sludge can facilitate resupplying microorganisms to flow adjustment tank 6 for further dispersal of the microorganisms in and through RBP tanks 100 a, 100 b and BPP tank 200 .
- An excess sludge pump 16 may be employed to pump excess precipitated sludge from sedimentation tank 14 and to move the excess sludge to a dewatering device 17 .
- the type of dewatering device may be determined according to the specific treatment application.
- the sludge cake 17 b from dewatering device 17 may be disposed offsite, while the decant 17 a may be returned to flow adjustment tank 6 . If required, the UV treated effluent 30 out flowing from UV light units 20 may be discharged to a discharge holding tank for temporary storage for regulatory purposes prior to final discharge.
- System 500 may be adapted for decomposing and purifying high strength (biochemical oxygen demand of 2,500-10,000 mg/l) sewage and wastewater.
- System 500 may include a general automatic screening device 2 and screening compactor 2 a, an equalization basin 3 , a flow adjustment tank 6 , a first set of first stage biological processor tanks, which may be RBP tanks 100 a, 100 b, 100 c , with rotary media disk assembly 102 , at least one second set of first stage biological processor tanks, which may be RBP tanks 100 d, 100 e, with rotary media disk assembly 102 , at least one second stage biological processor tank, which may be a BPP tank 200 , with stationary pendant media for microbe adherence 210 , a sedimentation tank 14 , a sludge dewatering device 17 , a supernatant filtering device 18 , a flow meter device 19 , and UV disinfection components 20 .
- a first set of first stage biological processor tanks which may be RBP tanks 100 a, 100 b, 100 c , with rotary media disk assembly 102
- at least one second set of first stage biological processor tanks which may be RBP tanks 100
- the general automatic screening device 2 for removing coarse contaminants can remove suspended solids greater than 5 mm in size from the inflowing sewage and wastewater via an inlet pipe 1 .
- the effluent can move to equalization basin 3 , while the coarse contaminant removed by screening device 2 can be moved to a screening compactor 2 a, whereby the captured screenings may be washed and compressed.
- the decant liquid 2 b from screening compactor 2 may be moved to equalization basin 3 while the compacted screenings 2 c can be disposed offsite.
- the equalization basin 3 is where the influent may be temporarily staged to allow the varying inflow rates to intermix. Such influent blending facilitates increasing the overall wastewater uniformity, quality and treatment efficiency.
- Equalization basin 3 can include an air distribution pipe 4 and an air supply pipe 11 a which may be pressurized by air supplied by at least one blower 11 , via an air pressure regulator 11 b disposed inline at each installed air supply pipe 11 a so as to appropriately regulate the necessary air delivery rate.
- the appropriate airflow rate per minute and per unit volume can be computed for each specific treatment application. Injecting air into equalization basin 3 can facilitate reducing the likelihood of the stratification of suspended solids which may result in surface caking or solids deposition, as well as reducing the likelihood of putrefaction occurring.
- a raw water feed pump 5 may be provided to transfer the influent from equalization tank 3 to flow adjustment tank 6 .
- Flow adjustment tank 6 may be provided to distribute the sewage and wastewater such that the influent flows uniformly into each RBP tank 100 a, 100 b or similarly to all and any first stage biological processors engaged in the sewage and wastewater treatment process.
- the flow to the at least one second set of RBP tanks 100 d, 100 e may be the combined outflows of tanks 100 a, 100 b, 100 c, which can then be equally divided between tanks 100 d, 100 e, and any further tanks.
- the appropriate sizes of RBP tanks 100 a, 100 b, 100 c, 100 d, 100 e may be determined according to computations from known factors for a specific treatment application.
- Each tank may include a bottom drain, sludge pump, or access port for cleaning.
- Each RBP tank 100 a, 100 b 100 c, 100 d, 100 e can further include a rotating biological processor contactor assembly 102 .
- the rotating biological processor contactor 102 can provide a first stage host medium, and can therefore include a plurality of media disks.
- the rotating biological processor contactor assembly 102 can include any desired amount of disks, for example between 10 disks and 30 disks, which can provide a surface for supporting the growth of microorganisms, and facilitate the microorganisms to decompose and purify contaminants and pollutants contained in the sewage and wastewater, further purifying it in the RBP tanks 100 d, 100 e.
- the microorganisms that are used to seed the RBP tanks 100 a, 100 b, 100 c, 100 d , 100 e and more specifically the rotating biological processor contactor assembly 102 can be, for example, desired naturally occurring Bacillus species bacteria, various rotifers, protozoa and metazoa.
- Known nutrient activators appropriate for the particular treatment application may be utilized to stimulate growth of microorganisms during initial treatment process startup.
- the RBP tanks 100 a, 100 b, 100 c, 100 d, 100 e may include fine air bubble tubular diffusers 9 and bottom air manifold pipes 10 .
- the air devices 9 , 10 may be supplied with air generated by at least one blower 11 and may be sized according to computations for a specific treatment application.
- the air supplied by at least one blower 11 to fine air bubble tubular diffusers 9 via air regulator 11 b and air pipe 11 a in the RBP tanks 100 a, 100 b, 100 c, 100 d , 100 e may have dual functionality.
- the air supplied via diffusers 9 can provide a supplemental air supply to facilitate maintaining appropriate dissolved oxygen levels in RBP tanks 100 a, 100 b, 100 c, 100 d, 100 e.
- the air supplied via diffusers 9 can facilitate dislodging and sloughing off excess or old biomass from the biofilm layer on rotating biological processor contactor assembly 102 .
- the air supplied by at least one blower 11 to subsurface air manifold 10 in the RBP tanks 100 a, 100 b, 100 c, 100 d, 100 e may have dual functionality.
- the air supplied via manifold 10 may facilitate scouring the bottom of the tank.
- the scouring functionality may be initiated for a desired period of time and at a desired interval, for example, on a bidaily basis to facilitate resuspension of settled solids.
- the air supplied via manifold 10 can reduce the likelihood of solids accumulating and decaying, thereby reducing the likelihood of objectionable odors.
- Both air systems 9 , 10 may additionally contribute to maintaining and cleaning passageways in the radicalized resin fiber media and reducing the likelihood of weight overload on the shaft of rotating biological processor contactor assembly 102 .
- At least one BPP tank 200 and any other second stage biological processors engaged in sewage and wastewater treatment for a specific application may be downstream of and may receive the outflow from the at least one second set of RBP tanks 100 d, 100 e, which in turn receives their treated effluent from first set of RBP tanks 100 a , 100 b, 100 c.
- the at least one BPP tank 200 may include a drain or waste sludge pump for cleaning purposes.
- BPP tank 200 can further include a plurality of pendant media sheets 210 .
- the appropriate size and quantity of the pendant media sheets 210 may be determined according to computations from known factors for a specific treatment application.
- Pendant media sheets 210 can facilitate the second stage biological process and can provide a surface for supporting the growth of microorganisms, thereby facilitating the microorganisms to decompose and purify residual contaminants and pollutants contained in the sewage and wastewater. The sewage and wastewater is thus purified while in BPP tank 200 .
- the microorganisms that are used to seed BPP tank 200 and more specifically pendant media 210 may be, for example, desired naturally occurring Bacillus species bacteria, various rotifers, protozoa and metazoa.
- Known nutrient activators appropriate for the particular treatment application may be utilized to stimulate growth of microorganisms during initial treatment process startup.
- the at least one BPP tank 200 may be constructed with both tubular fine air bubble diffusers 9 and subsurface air manifold pipes 10 . These air devices may be supplied with air generated by at least one blower 11 and may be sized according to computations for a specific treatment application.
- the air supplied by at least one blower 11 to tubular fine bubble air diffusers 9 via air pipe 11 a and inline air regulator l lb may have multiple functionality.
- the air may provide two equal and simultaneous functions, those being to inoculate the wastewater with oxygen and to mobilize the MLSS in the BPP tank 200 .
- the rate of air supplied to the fine bubble tubular diffusers 9 can be provided so as to maintain the appropriate dissolved oxygen level in the wastewater in the BPP tank 200 .
- the wastewater can circulate with turbulent flow, causing the MLSS to mix and churn throughout the BPP tank 200 and further causing the sewage and wastewater to come in contact with the microorganisms on pendant media sheets 210 . This contact can allow further effluent purification to occur.
- the air supplied by at least one blower 11 through air pipe 11 a to subsurface air manifold 10 in the BPP tanks 200 may also have dual functionality
- First, the air supplied via manifold 10 may facilitate scouring the bottom of the tank.
- the scouring functionality may be initiated for a desired period of time and at a desired interval, for example, on a four-day interval basis to facilitate resuspension of settled solids.
- Second, the air supplied via manifold 10 can reduce the likelihood of solids accumulating and decaying, thereby reducing the likelihood of objectionable odors.
- Both air systems 9 , 10 may additionally contribute to ongoing sloughing of excess biofilm from pendant media sheets 210 during the treatment process.
- At least one sedimentation tank 14 can facilitate separation of the treated MLSS outflowing from BPP tank 200 .
- the appropriate size for the sedimentation tank 14 can be determined according to computations from known factors for a specific treatment application. If desired for a specific treatment application, further purification of treated sewage and wastewater out flowing from sedimentation tank 14 can be achieved by a filtration device 18 .
- the appropriate type, kind and capability of filtration device 18 may be determined by computation for a specific treatment application, and filtration device 18 may be a filtering device known in the art.
- Filtration device 18 disposed between sedimentation tank 14 and UV disinfection units 20 , can facilitate removing any residual very fine suspended solids so as to achieve a supernatant reading of approximately two nephelometric turbidity units (NTU). Filtered solids 18 a removed by filtration device 18 can then be moved to dewatering device 17 , while the supernatant filtrate 18 b may be moved to flow meter 19 and subsequently to UV light units 20 for disinfection.
- NTU nephelometric turbidity units
- UV light units 20 may be configured such that the supernatant filtrate 18 b inflows to a series of at least two UV light units, wherein supernatant filtrate 18 b may be disinfected. Disinfection of supernatant filtrate 18 b by the UV light units can involve the elimination of any living organism in the supernatant filtrate. Redundant UV light units 20 may be provided so as to accommodate servicing and lamp replacement without sacrificing treatment and disinfection efficacy, as well as to satisfy regulatory standards for process redundancy, performance consistency, and capability. To this end, a plurality of parallel pathways 21 a , 21 b for supernatant filtrate flow may be provided. The parallel pathways 21 a , 21 b may be operated one at a time.
- the supernatant filtrate flow may be directed, for example by a valve, through pathway 21 a or through pathway 21 b. This can allow the inactive pathway to be appropriately cleaned and any necessary components replaced. Furthermore, an additional UV light unit 20 may be provided downstream of both pathway 21 a and 21 b.
- a single UV light disinfection channel 22 may be provided in lieu of UV light units 20 and channels 21 a, 21 b .
- the single channel 22 as shown in FIG. 6 b , multiple independent banks 23 of removable UV lights can be disposed, with the design and specifications of the lights being determined by calculations known in the art.
- Each light bank 23 may be operated independently of the other light banks 23 .
- only a single light bank 23 may be deactivated at a time, thereby providing a quantity of operating lamps to meet the above-described standards.
- a portion thereof may be pumped via a return sludge pump 15 and pipe 15 a as return activated sludge.
- the appropriate pumping interval and duration of pumping may be determined according to computations from known factors for a specific treatment application.
- the return pumping of the precipitated sludge can facilitate resupplying microorganisms to flow adjustment tank 6 for further dispersal of the microorganisms in and through RBP tanks 100 a, 100 b and BPP tank 200 .
- An excess sludge pump 16 may be employed to pump excess precipitated sludge from sedimentation tank 14 and to move the excess sludge to a dewatering device 17 .
- the type of dewatering device may be determined according to the specific treatment application.
- the sludge cake 17 b from dewatering device 17 may be disposed offsite, while the decant 17 a may be returned to flow adjustment tank 6 . If required, the UV treated effluent 30 out flowing from UV light units 20 may be discharged to a discharge holding tank for temporary storage for regulatory purposes prior to final discharge.
- any known intermediate filtration methods may be employed between the general automatic screening device and the flow adjustment tank to further remove fine suspended solids of >5mm.
- Such filtration devices can facilitate removing additional fine suspended solids and can provide increased treatment efficiency and higher quality.
- embodiments disclosed herein can facilitate a substantial reduction or offset of energy usage between the various treatment modes, which are the RBP 100 , BPP 200 and sedimentation tank 14 .
- the treated effluent can then flow by gravity to the BPP 200 , and can subsequently flow by gravity to the sedimentation tank 14 .
- the elimination of pumping requirements between various stages of treatment can reduce power consumption as well as initial capital and ongoing operational cost.
- the RBP 100 , BPP 200 , and sedimentation tank 14 may be provided as an integrated processing unit 700 .
- Integrated processing unit 700 may be used with any of the embodiments of system 300 , 400 , 500 , and can facilitate providing compact integrated treatment solutions according to the embodiments described herein.
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Abstract
An apparatus, system, and process for wastewater treatment. The apparatus can include a basin for receiving a liquid to be treated, the liquid having a direction of flow, and a plurality of pendant sheets for supporting the growth of microorganisms, disposed within the basin and in contact with the liquid, wherein the pendant sheets are oriented parallel to the direction of flow of the liquid.
Description
- This application is a continuation of U.S. patent application Ser. No. 13/437,554, filed Apr. 2, 2012, and entitled Apparatus, System and Process for Wastewater Purification, the entire contents of which are hereby incorporated by reference.
- Wastewater treatment systems are commonly used for purification of wastewater, sewage and the like, and allow for the return of the treated wastewater to the environment. However, it can be desirable to increase the efficiency and level of purification while decreasing the usage of chemical reagents as well as outside energy inputs.
- According to at least one exemplary embodiment, an apparatus for wastewater treatment may be disclosed. The apparatus can include a basin for receiving a liquid to be treated, the liquid having a direction of flow, and a plurality of pendant sheets for supporting the growth of microorganisms, disposed within the basin and in contact with the liquid wherein the pendant sheets are oriented parallel to the direction of flow of the liquid. The plurality of pendant sheets can further include a radicalized resin fiber network media and a thixed, prepromoted unsaturated wax orthopolyester resin coating.
- According to another exemplary embodiment, a system for wastewater treatment may be disclosed. The system can include at least one rotating biological processor and at least one pendant biological processor disposed downstream of the at least one rotating biological processor, wherein the at least one pendant biological processor further includes a basin for receiving wastewater, the wastewater having a direction of flow, and a plurality of pendant sheets for supporting the growth of microorganisms, disposed within the basin and in contact with the wastewater, the pendant sheets being oriented parallel to the direction of flow of the wastewater.
- According to another exemplary embodiment, a process for wastewater treatment may be disclosed. The process can include flowing wastewater into a basin, the basin having a plurality of pendant sheets suspended therein, flowing the wastewater in a direction parallel to the plurality of pendant sheets, and flowing the wastewater out of the basin, wherein the pendant sheets support the growth of microorganisms for treating the wastewater.
- Advantages of embodiments of the present invention will be apparent from the following detailed description of the exemplary embodiments. The following detailed description should be considered in conjunction with the accompanying figures in which:
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FIG. 1 a is a schematic cross-sectional view of an exemplary embodiment of a rotating biological processor. -
FIG. 1 b is a schematic side view of an exemplary embodiment of a rotating biological processor. -
FIG. 2 a is a schematic side view of an exemplary embodiment of a pendant biological processor. -
FIG. 2 b is a schematic cross-sectional view of an exemplary embodiment of a pendant biological processor. -
FIG. 3 is a schematic of a first exemplary embodiment of a system for wastewater purification. -
FIG. 4 is a schematic of a second exemplary embodiment of a system for wastewater purification. -
FIG. 5 is a schematic of a third exemplary embodiment of a system for wastewater purification. -
FIG. 6 a is a schematic of a portion of a system for wastewater purification with an exemplary embodiment of an ultraviolet disinfection channel. -
FIG. 6 b is a schematic of an exemplary embodiment of an ultraviolet disinfection channel. -
FIG. 7 is a schematic side view of an exemplary embodiment of an integrated processing unit. - Aspects of the invention are disclosed in the following description and related drawings directed to specific embodiments of the invention. Alternate embodiments may be devised without departing from the spirit or the scope of the invention. Additionally, well-known elements of exemplary embodiments of the invention will not be described in detail or will be omitted so as not to obscure the relevant details of the invention. Further, to facilitate an understanding of the description discussion of several terms used herein follows.
- As used herein, the word “exemplary” means “serving as an example, instance or illustration.” The embodiments described herein are not limiting, but rather are exemplary only. It should be understood that the described embodiment are not necessarily to be construed as preferred or advantageous over other embodiments. Moreover, the terms “embodiments of the invention”, “embodiments” or “invention” do not require that all embodiments of the invention include the discussed feature, advantage or mode of operation.
- Embodiments disclosed herein present an advanced technique for decomposing sewage and wastewater organic matters and removing suspended solids utilizing a synergetic process of microorganisms, a specialized host medium and supplemental air injection. The embodiments disclosed herein may be adapted for specific applications based on known formulas that take into account the parameters of the desired application. Such parameters may include, for example, pumping capacity, tank and basin capacity, loading rates, hydraulic residence time, mean cell residence time, air volume, overflow rates, and so forth.
- Furthermore, the advanced materials and specialized techniques utilized by the embodiments disclosed herein can provide for higher quality discharge effluent, simpler operational aspects and lower operational costs. More specifically, the embodiments disclosed herein may utilize various species of naturally occurring microorganisms in various controlled growing postures. The embodiments disclosed herein may incorporate a series type flow configuration whereby the sewage, wastewater or the like may undergo progressive degrees of purification by adsorption, absorption, and assimilation. This purification and contamination reduction can be facilitated by maintaining desired parameters of food to microorganism (F/M) ratio, mixed liquor suspended solids (MLSS), dissolved oxygen (DO) levels, and pH levels particularly.
- The embodiments disclosed herein can include two interconnected specialized process units, each of which may be provided in any desired quantity for the particular application of the system. The specialized process units include a Rotating Biological Processor (RBP) and a Biological Pendant Processor (BPP). The RBP may be utilized as a first stage biological processor tank, while the BPP may be utilized as a second stage biological treatment tank.
- Turning to
FIGS. 1 a-1 b, a rotatingbiological processor 100 may include a rotating biologicalprocessor contactor assembly 102. The rotating biologicalprocessor contactor assembly 102 can provide a first stage host medium, and include a plurality ofmedia disks 110, which may be provided in desired types, forms and sizes, and mounted in parallel fashion in a spaced formation along a horizontalrotatable drive shaft 112. In some exemplary embodiments, the rotating biologicalprocessor contactor assembly 102 can include any desired amount ofdisks 110, for example between about 10 disks and about 30 disks, or any other desired number of disks that enables the RBP to function as described herein. Exemplary RBP configurations may include 15, 20, 24, or 30 disks; however, any number of disks may be contemplated and provided as desired. - The
disks 110 may include a radicalized resin fiber network media, which may be constructed from a material such as Saran®, manufactured by Asahi-Dow, a polyvinylidene monofilament material, or any similar material that enables the RBP to function as described herein. The radicalized resin fiber network media may further include a thixed, prepromoted unsaturated wax orthopolyester resin, for example Eterset 2597 APTC-M2, or any similar material that enables the RBP to function as described herein. The resin may be applied to the fiber network media by any known manner, for example spray coating. The resin may serve to increase the homogeneity of the stranded network media, strengthen the mechanical resilience of the irregularly entangled radicalized media and further provide an added protective layer. In some embodiments, the network media may be cut and tailored into six substantially equally shaped pieces. The pieces, when fitted to the carrying structure included herein, can be shaped as a circular media disk. The coated resin fiber network media used herein may be about 40-60 mm in thickness, for example about 50 mm, may have a linear mass density of about 3500-4500 denier, for example 4000 denier, and may have a void ratio of above approximately 95.0%, for example 97.0% and above. - Furthermore, the resin fiber entangled network media disk can allow the contaminated effluent containing organic matter, suspended solids, and the like to easily flow up, down, back and forth through the reticular mesh when the disk is rotating. Along with the wastewater, this can provide for the introduction of ambient air in, around and throughout the entangled stranded media disk, where an evolving thin coat of microorganisms can be sustained on the individual resin strands. The microorganisms that are used to seed the media disks can be desired naturally occurring Bacillus species bacteria, various rotifers, protozoa and metazoa.
- The carrying structure of the
RBP 100 can include themain carrier shaft 112, shaft ends 114, and middle andend support frames 116, 118 coupled to themain carrier shaft 112. Thesupport frames 116, 118 can include multiplehorizontal rod stock 120 having threaded ends for supporting the circular resin fibernetwork media disks 110. The carrying structure of theRBP 100 may be constructed of stainless steel materials, or any other suitable material for the application. The fibernetwork media disks 110 may be separated by attendant hollow end-flangedspacers 122 of requisite sizing which can slide onto thesupport rod stock 120 between themedia disks 110, thesupport rod stock 120 being coupled to the middle andend support frames 116, 118 on themain carrier shaft 112 with washers, nuts, or any other suitable coupling. In some exemplary embodiments, RBP units having less than 20 disks, for example 15 disks, may include twoend support frames 118, withmedia disks 110 mounted between theend support frames 118, separated byspacers 122. In other exemplary embodiments, RBP units having 20 or more disks, for example 20, 24, or 30 disks, may include end support frames 118 mounted at the ends of themain carrier shaft 112, and may include a center support frame 116 mounted proximate the center of themain carrier shaft 112.Media disks 110 may be mounted between eachend support frame 118 and the center support frame 116, and may be separated byspacers 122, substantially as shown inFIG. 1 a. - The
main carrier shaft 112 and other components of the RBP assembly are mounted in commensuratelysized carrier bearings 122, the quantity, sizes, and loading rates of which may be determined for a particular wastewater treatment project via the appropriate calculations. Thecarrier shaft 112 may be provided with a 60% overload safety factor to support themedia disks 110 and other components. Thecarrier bearings 122 may be provided based on the combined load weight of thecarrier shaft 112 and the components supported thereon. - The
carrier shaft 112 may be coupled to a variable frequency drive motor and may be adapted to operate at any desired rotational speed, for example within a range of about 1 to 6 rpm, depending on the dissolved oxygen level, wastewater load rate and other variables of the particular application.Carrier shaft 112 may be coupled tomotor 124 by anendless belt 126, or by any other suitable drive coupling. The tank or basin of theRBP 100 may be formed from any suitable materials, and may be disposed either above ground, partially above ground or in situ. The tank or basin may function as the containment unit for the sewage or wastewater influent being treated, and may be sized according to the particular project design calculations. - The
RBP 100 may be mounted such that about 40% of the circular shaped resin fiber network media disks are immersed in the wastewater, thereby soaking that portion of the resin fiber network media with raw effluent as it rotates through the unit. This allows for the wastewater to be engaged by the microorganisms which are attached to the resin fiber network media, thereby resulting in contaminant reduction and purification. Awater volume adjuster 128 may be provided withinRBP 100 so as to maintain a desired water level in the tank or basin. - Turning to
FIG. 2 , theBiological Pendant Processor 200 may be downstream of theRBP 100 and receive the effluent therefrom. TheBPP 200 can include a tank or basin constructed of any suitable materials, and may further include a plurality of sheet-like pendants 210. The quantity, sizes and loading rates of thependants 210 may be for a particular wastewater treatment project via the appropriate calculations, and further in accordance with and incidental to the accomplished level of treatment in theupstream RBP 100. The sheet-like pendants 210 may be arranged and suspended in parallel fashion as well in a spaced formation. The thinnest dimension of thependants 210 when suspended may be oriented such that the flow direction of the effluent is substantially parallel to the planes ofpendants 210. The sheet-like pendants may be constructed from a material such as Saran®, manufactured by Asahi-Dow, a polyvinylidene monofilament material, or any similar material that enables the BPP to function as described herein. The radicalized resin fiber network media may further include a thixed, prepromoted unsaturated wax orthopolyester resin coating, for example, Eterset 2597 APTC-M2, or any similar material that enables the BPP to function as described herein. The resin may be applied to the fiber network media by any known manner, for example, spray coating. The resin may serve to increase the homogeneity of the stranded network media, strengthen the mechanical resilience of the irregularly entangled radicalized media and further provide an added protective layer. The fiber network media may optimally be cut and tailored into singular equally sized pendants adapted for a particular project application. - The sheet-
like pendants 210 can allow a substantially unrestricted flow of the treatable influent in, around and through each pendant, in part due to the void ratio and stranded construction of the resin fiber network. The void ratio of the entangled media may be above approximately 95.0%, for example 97.0% and above. Each sheet-like pendant may be suspended from asupport 212, which may be constructed from stainless steel or any other appropriate material, and may be appropriately engineered for the particular project application. - The sheet-
like pendants 210 can provide a surface for supporting the growth of microorganisms, thereby facilitating the microorganisms to decompose and purify residual contaminants and pollutants contained in the sewage and wastewater. The microorganisms that are used to seedpendant media 210 may be, for example, desired naturally occurring Bacillus species bacteria, various rotifers, protozoa and metazoa. Known nutrient activators appropriate for the particular treatment application may be utilized to stimulate growth of microorganisms during initial treatment process startup. - The coated resin fiber network media utilized for the
pendants 210 may be about 20-30 mm in thickness, for example 25 mm. The coated resin fiber network media may further have a linear mass density of about 500-1500 denier, for example 900denier, and may be cut to width and length as appropriate for the particular application. The custom cut piece of resin fiber network media can then be fitted with end pieces. The end pieces may be formed from a material such as nylon and then cut and seamed down the sides thereof. - The width of the end pieces can be substantially similar to the width of the pendant media. Subsequently, the nylon material may be cut into lengths of approximately 10 inches, and folded over each end of the pendant media, such that an approximately 2.5-3 inch loop of material remains beyond the cut end of the pendant media. Subsequently, 2 rows of double nylon stitching, approximately 1 inch apart, may be sewn through the end piece and the resin fiber media such that the fiber media is sandwiched between the two longitudinal edges of the end piece. The loop of excess material can facilitate hanging the pendant from the support. The pendant media can then be suspended by inserting an appropriately sized stainless steel length of
pipe 214, which may be approximately 0.75 inches in diameter, through the end piece loop on the pendant and subsequently inserting the pipe into thesupport frame 212. - The
support frame 212 can include a plurality of equally spaced notches sized to receive portions of thepipe 214 so as to maintain thepipe 214 suspended at a height that facilitates suspending thependant media 210 from thepipe 214. Astainless steel rod 216 having a diameter of approximately 1 inch and a length substantially equal to the width of the pendant, can then be inserted through the bottom loop on thependant 210. The mass of therod 216 can be sufficient to provide weight to the suspended pendant media so as to hold it in a substantially vertical position while resisting liquid turbulence. Alternatively, any other structure or weight for maintaining the pendant media in a substantially vertical position may be utilized. - Additionally, the
BPP 200 can function as a combination subsequent stage biological processor and aeration basin. Utilizing theBPP 200 in conjunction with theRBP 100 can result in an improved level of floc and consequently an improved settleability rate in the sedimentation tank, without the use of any polymer coagulants. Furthermore, theRBP 100 andBPP 200 may be configured to operate in a series configuration, or in a parallel configuration where appropriate. For example in situations where kind and degree of contaminants needing treatment becomes substantially higher, the parallel configuration may be used. The parallel configuration may be as follows: the influent can be split and deployed to a plurality ofRBPs 100 installed in parallel, with the residual effluent from those units consolidated and directed to a subsequent RBP unit or set of RBP units for further treatment. The effluent from the subsequent unit or units can then be deployed to appropriatelysized BPP units 200, which may be installed in parallel, to undergo the additional treatment and purification as described above. - Referring now to
FIGS. 1 a-2 b, both theRotating Biological Processor 100 and theBiological Pendant Processor 200 units may include fine bubbletubular diffusers 9 disposed therein for inoculating the wastewater with supplemental air. The quantity and size oftubular diffusers 9 may be determined as a result of the calculations performed for a particular wastewater treatment project and the extent of aeration needed therefor. In theRBP 100, thetubular diffusers 9 may be located on and parallel to the sidewall of the basin opposite of the location of wastewater inflow. Thetubular diffusers 9 can be oriented perpendicularly to the plurality of media disks. Theair bubble diffusers 9 can further be situated such that the mid point of the side of the arc of thetubular diffuser 9 and the mid point of the side of the arc of the circular resin fiber network media are in vertical alignment at those corresponding points, with the highest arc of the diffuser being at least 1.5 feet below the lowest point of the media arc. It should be appreciated that the direction of rotation of the rotating media should be such that as the fine bubbles rise the media rotates downward into the bubbles. Such a direction of rotation facilitates increased mixing and interaction of the contaminants, supplemental air and microorganisms on the host media. - The Dissolved Oxygen (DO) levels in the
RBP unit 100 can be maintained within a range of approximately 1-3 mg/l, or within a narrower range of approximately 1.5-2 mg/l. It should be appreciated that multiple factors may influence the DO level within theRBP unit 100, for example the contaminant level of the influent being treated, the wastewater temperature, the ambient air temperature as the resin fiber network media rotates out of the influent, the speed which the media is rotating and the supplemental air pressure and temperature. It should further be appreciated that such factors may affect the treatment success and process monitoring information. - In the
BPP 200 unit thetubular diffusers 9 can perform dual functions, specifically aeration and mixing. Since theBPP 200 can lack a mechanical stirrer, the introduction of air through thediffusers 9 can function as the motivation force to circulate the wastewater. Thetubular diffusers 9 may be positioned such that the longitudinal axes thereof are disposed perpendicular to the planes of the resin fiber network media pendants. Thediffusers 9 can be mounted between the point of inflow and the media pendants, or, if multiple parallel supports of the media pendants are provided, thediffusers 9 can be mounted between the plurality of supports but not between the furthest supports adjacent to the discharge overflow tube/weir, and the discharge overflow tube/weir itself. Thediffusers 9 may be mounted approximately 6-8 inches above the bottom of the basin of theBPP 200. In operation, theair exiting diffusers 9 may cause the movement of the wastewater in random swirling eddies, thereby continuously mixing and moving the wastewater, while simultaneously introducing new air into theBPP 200 and causing the MLSS to make contact with the microorganisms on the host media pendant. The DO levels in theBPP unit 200 can be maintained within a range of approximately 3-5 mg/l, or within a narrower range of approximately 4-4.5 mg/l. - Both the
Rotating Biological Processor 100 and theBiological Pendant Processor 200 units may further includesubsurface air manifolds 10 disposed within the RBP and BPP containment basins.Manifolds 10 may be sized, constructed and bored according to calculations performed to determine the needs of the particular sewage, wastewater or the like project. Air manifolds 10 may include a plurality of lateral pipes, and each lateral pipe may include a plurality of orifices spaced along the undersides thereof. The orifices may be sized and shaped to emit coarse air bubbles. The orifices may have a diameter of approximately ⅛ inch. The manifold pipes may be mounted such that the bottoms of the pipes are at most 3 inches above the bottom of the containment basin. Airflow to each lateral pipe, or a plurality of lateral pipes, may be controlled by at least one valve, for example a ball valve, and may be controlled manually, electrically or pneumatically, depending on the design of the particular sewage or wastewater project and the degree of automation desired. - The subsurface
air manifold system 10 in theRBP units 100 andBPP units 200 may facilitate creating a disruptive force on the settled solids, thereby promoting the resuspension thereof, and facilitating the settled solids to re-contact the resin fiber network media. This can be accomplished by providing pressurized airflow to the lateral pipes at desired intervals and for desired durations. For example, in theRBP units 100, airflow may be provided at a bidaily frequency for a duration of approximately one minute. In theBPP units 200, airflow may be provided at a frequency of approximately once every 4-days, and for a duration of approximately 1-1.5 minutes. The result of such air scouring functionality can be a reduction of wasted sludge in the processor units. Furthermore, the subsurfaceair manifold system 10 can facilitate cleaning of a processor basin when necessary, for example by substantially disturbing the bottom of the containment basin by increasing the air pressure provided through the manifold 10 and allowing the scouring to proceed during the liquid purging of the processor units. The desired volume and pressure of air may be determined by the calculations for a particular sewage or wastewater treatment project, and may be provided by known blowing units. - Referring generally now to
FIGS. 3-5 , exemplary embodiments of systems for sewage and wastewater purification treatments may be disclosed. The embodiments of systems disclosed herein can include theRBP 100 andBPP 200 to provide advantageous treatment of sewage and wastewater, as described above. One exemplary embodiment of the system for sewage and wastewater purification treatment may be configured to accomplish decomposition and purification of sewage and wastewater to a quality higher than commonly rated as secondary level. Other exemplary embodiments of the system for sewage and wastewater purification treatment may be configured to accomplish decomposition and purification of sewage and wastewater to a quality commonly rated as tertiary level non-potable. - Turning to
FIG. 3 , a first exemplary embodiment of a system for sewage andwastewater purification treatment 300 may be disclosed.System 300 can include a general automatic screening device 2 and screening compactor 2 a, anequalization basin 3, a flow adjustment tank 6, first stage biological processor tanks, which may be RBP tanks 100 a, 100 b, with rotarymedia disk assembly 102, at least one second stage biological processor tank, which may be aBPP tank 200 with stationary pendant media formicrobe adherence 210, asedimentation tank 14, and asludge dewatering device 17. - The general automatic screening device 2 for removing coarse contaminants can remove suspended solids greater than 5 mm in size from the inflowing sewage and wastewater via an inlet pipe 1. After screening, the effluent can move to
equalization basin 3, while the coarse contaminant removed by screening device 2 can be moved to a screening compactor 2 a, whereby the captured screenings may be washed and compressed. The decant liquid 2 b from screening compactor 2 may be moved toequalization basin 3 while the compacted screenings 2 c can be disposed offsite. - The
equalization basin 3 is where the influent may be temporarily staged to allow the varying inflow rates to intermix. Such influent blending facilitates increasing the overall wastewater uniformity, quality and treatment efficiency.Equalization basin 3 can include an air distribution pipe 4 and an air supply pipe 11 a which may be pressurized by air supplied by at least oneblower 11, via an air pressure regulator 11 b disposed inline at each installed air supply pipe 11 a so as to appropriately regulate the necessary air delivery rate. The appropriate airflow rate per minute and per unit volume can be computed for each specific treatment application. Injecting air intoequalization basin 3 can facilitate reducing the likelihood of the stratification of suspended solids which may result in surface caking or solids deposition, as well as reducing the likelihood of putrefaction occurring. - A raw
water feed pump 5 may be provided to transfer the influent fromequalization tank 3 to flow adjustment tank 6. Flow adjustment tank 6 may be provided to distribute the sewage and wastewater such that the influent flows uniformly into each RBP tank 100 a, 100 b or similarly to all and any first stage biological processors engaged in the sewage and wastewater treatment process. The appropriate sizes of RBP tanks 100 a, 100 b may be determined according to computations from known factors for a specific treatment application. Each RBP tank 100 a, 100 b may include a bottom drain, sludge pump, or access port for cleaning. Each RBP tank 100 a, 100 b can further include a rotating biologicalprocessor contactor assembly 102, which can provide a first stage host medium, and can include a plurality of media disks. In some exemplary embodiments, the rotating biologicalprocessor contactor assembly 102 can include any desired amount of disks, for example between 10 disks and 30 disks, which can provide a surface for supporting the growth of microorganisms, and facilitate the microorganisms to decompose and purify contaminants and pollutants contained in the sewage and wastewater that inflows from flow adjustment tank 6. The microorganisms that are used to seed the RBP tank 100 a, 100 b and more specifically the rotating biologicalprocessor contactor assembly 102 can be desired naturally occurring Bacillus species bacteria, various rotifers, protozoa and metazoa. Known nutrient activators appropriate for the particular treatment application may be utilized to stimulate growth of microorganisms during initial treatment process startup. - The RBP tanks 100 a, 100 b may include fine air bubble
tubular diffusers 9 and subsurfaceair manifold pipes 10. Theair devices blower 11 and may be sized according to computations for a specific treatment application. - The air supplied by at least one
blower 11 to fine air bubbletubular diffusers 9 via air regulator 1 lb and air pipe 11 a in the RBP tanks 100 a, 100 b may have dual functionality. First, the air supplied viadiffusers 9 can provide a supplemental air supply to facilitate maintaining appropriate dissolved oxygen levels in RBP tanks 100 a, 100 b. Furthermore, the air supplied viadiffusers 9 can facilitate dislodging and sloughing off excess or old biomass from the biofilm layer on rotating biologicalprocessor contactor assembly 102. - Likewise, the air supplied by at least one
blower 11 tosubsurface air manifold 10 in the RBP tanks 100 a, 100 b may have dual functionality. First, the air supplied viamanifold 10 may facilitate scouring the bottom of the tank. The scouring functionality may be initiated for a desired period of time and at a desired interval, for example, on a bidaily basis to facilitate resuspension of settled solids. Second, the air supplied viamanifold 10 can reduce the likelihood of solids accumulating and decaying, thereby reducing the likelihood of objectionable odors. Bothair systems processor contactor assembly 102. - At least one
BPP tank 200 and any other second stage biological processors engaged in sewage and wastewater treatment for a specific application, may be downstream of and may receive the outflow from RBP tanks 100 a, 100 b.BPP tank 200 may include a drain or waste sludge pump for cleaning purposes.BPP tank 200 can further include a plurality ofpendant media sheets 210. The appropriate size and quantity of thependant media sheets 210 may be determined according to computations from known factors for a specific treatment application.Pendant media sheets 210 can facilitate the second stage biological process and can provide a surface for supporting the growth of microorganisms, thereby facilitating the microorganisms to decompose and purify residual contaminants and pollutants contained in the sewage and wastewater. The sewage and wastewater is thus purified while intank 200. - The microorganisms that are used to seed
BPP 200 and, more specifically,pendant media 210 may be, for example, desired naturally occurring Bacillus species bacteria, various rotifers, protozoa and metazoa. Known nutrient activators appropriate for the particular treatment application may be utilized to stimulate growth of microorganisms during initial treatment process startup. - The
BPP 200 may be constructed with both tubular fineair bubble diffusers 9 and subsurfaceair manifold pipes 10. These air devices may be supplied with air generated by at least oneblower 11 and may be sized according to computations for a specific treatment application. - The air supplied by at least one
blower 11 to tubular finebubble air diffusers 9 via air pipe 11 a and inline air regulator 11 b may have multiple functionality. First, the air may provide two equal and simultaneous functions, those being to inoculate the wastewater with oxygen and to mobilize the mixed liquor suspended solids (MLSS) in theBPP tank 200. The rate of air supplied to the fine bubbletubular diffusers 9 can be provided so as to maintain the appropriate dissolved oxygen level in the wastewater in theBPP tank 200. As the fine air bubbles rise from tubularfine air diffusers 9, the wastewater can circulate with turbulent flow, causing the MLSS to mix and chum throughoutBPP tank 200 and further causing the sewage and wastewater to come in contact with the microorganisms onpendant media sheets 210. This contact can allow further effluent purification to occur. - The air supplied by at least one
blower 11 through air pipe 11 a tosubsurface air manifold 10 in theBPP tanks 200 may also have dual functionality. First, the air supplied viamanifold 10 may facilitate scouring the bottom of the tank. The scouring functionality may be initiated for a desired period of time and at a desired interval, for example, on a four-day interval basis to facilitate resuspension of settled solids. Second, the air supplied viamanifold 10 can reduce the likelihood of solids accumulating and decaying, thereby reducing the likelihood of objectionable odors. Bothair systems pendant media sheets 210 during the treatment process. - At least one
sedimentation tank 14 can facilitate separation of the treated MLSS outflowing fromBPP tank 200. The appropriate size for thesedimentation tank 14 can be determined according to computations from known factors for a specific treatment application. The majority of solids inflowing intosedimentation tank 14 can settle to the bottom and may be mechanically directed to a sludge pit or trough. The supernatant liquid can overflow a notched weir and can be directed to the outflow trough for discharge 14 a or further treatment, depending on the specific treatment application needs. A portion of the precipitated sludge 14 b fromsedimentation tank 14 may be pumped out via areturn sludge pump 15 and pipe 15 a as return activated sludge. The appropriate pumping interval and duration of pumping may be determined according to computations from known factors for a specific treatment application. The return pumping of the precipitated sludge can facilitate resupplying microorganisms to flow adjustment tank 6 for further dispersal of the microorganisms in and through first stage biological processor tanks 100 a, 100 b and second stagebiological processor tank 200. Anexcess sludge pump 16 may be employed to pump excess precipitated sludge fromsedimentation tank 14 and to move the excess sludge to adewatering device 17. The type of dewatering device may be determined according to the specific treatment application. The sludge cake 17 b from dewateringdevice 17 may be disposed offsite, while the decant 17 a may be returned to flow adjustment tank 6. - Turning to
FIG. 4 , a second exemplary embodiment of a system for sewage andwastewater purification treatment 400 may be disclosed.System 400 can include a general automatic screening device 2 and screening compactor 2 a, anequalization basin 3, a flow adjustment tank 6, first stage biological processor tanks, which may be RBP tanks 100 a, 100 b, with rotarymedia disk assembly 102, at least one second stage biological processor tank, which may be aBPP tank 200, with stationary pendant media formicrobe adherence 210, asedimentation tank 14, asludge dewatering device 17, asupernatant filtering device 18, aflow meter device 19, and ultraviolet (UV)disinfection components 20. - The general automatic screening device 2 for removing coarse contaminants can remove suspended solids greater than 5 mm in size from the inflowing sewage and wastewater via an inlet pipe 1. After screening, the effluent can move to
equalization basin 3, while the coarse contaminant removed by screening device 2 can be moved to a screening compactor 2 a, whereby the captured screenings may be washed and compressed. The decant liquid 2 b from screening compactor 2 may be moved toequalization basin 3 while the compacted screenings 2 c can be disposed offsite. - The
equalization basin 3 is where the influent may be temporarily staged to allow the varying inflow rates to intermix. Such influent blending facilitates increasing the overall wastewater uniformity, quality and treatment efficiency.Equalization basin 3 can include an air distribution pipe 4 and an air supply pipe 11 a which may be pressurized by air supplied by at least oneblower 11, via an air pressure regulator 11 b disposed inline at each installed air supply pipe 11 a so as to appropriately regulate the necessary air delivery rate. The appropriate airflow rate per minute and per unit volume can be computed for each specific treatment application. Injecting air intoequalization basin 3 can facilitate reducing the likelihood of the stratification of suspended solids which may result in surface caking or solids deposition, as well as reducing the likelihood of putrefaction occurring. - A raw
water feed pump 5 may be provided to transfer the influent fromequalization tank 3 to flow adjustment tank 6. Flow adjustment tank 6 may be provided to distribute the sewage and wastewater such that the influent flows uniformly into each RBP tank 100 a, 100 b or similarly to all and any first stage biological processors engaged in the sewage and wastewater treatment process. The appropriate sizes of RBP tanks 100 a, 100 b may be determined according to computations from known factors for a specific treatment application. Each RBP tank 100 a, 100 b may include a bottom drain, sludge pump, or access port for cleaning. Each RBP tank 100 a, 100 b can further include a rotating biologicalprocessor contactor assembly 102. The rotating biologicalprocessor contactor assembly 102 can provide a first stage host medium, and can therefore include a plurality of media disks. In some exemplary embodiments, the rotating biologicalprocessor contactor assembly 102 can include any desired amount of disks, for example between 10 disks and 30 disks, which can provide a surface for supporting the growth of microorganisms, and facilitate the microorganisms to decompose and purify contaminants and pollutants contained in the sewage and wastewater that inflows from flow adjustment tank 6. The microorganisms that are used to seed the RBP tank 100 a, 100 b and more specifically the rotating biologicalprocessor contactor assembly 102 can be, for example, desired naturally occurring Bacillus species bacteria, various rotifers, protozoa and metazoa. Known nutrient activators appropriate for the particular treatment application may be utilized to stimulate growth of microorganisms during initial treatment process startup. - The RBP tanks 100 a, 100 b may include fine air bubble
tubular diffusers 9 and subsurfaceair manifold pipes 10. Theair devices blower 11 and may be sized according to computations for a specific treatment application. - The air supplied by at least one
blower 11 to fine air bubbletubular diffusers 9 via air regulator 11 b and air pipe 11 a in the RBP tanks 100 a, 100 b may have dual functionality. First, the air supplied viadiffusers 9 can provide a supplemental air supply to facilitate maintaining appropriate dissolved oxygen levels in process tanks 100 a, 100 b. Furthermore, the air supplied viadiffusers 9 can facilitate dislodging and sloughing off excess or old biomass from the biofilm layer on rotating biologicalprocessor contactor assembly 102. - Likewise, the air supplied by at least one
blower 11 tosubsurface air manifold 10 in the RBP tanks 100 a, 100 b may have dual functionality. First, the air supplied viamanifold 10 may facilitate scouring the bottom of the tank. The scouring functionality may be initiated for a desired period of time and at a desired interval, for example, on a bidaily basis to facilitate resuspension of settled solids. Second, the air supplied viamanifold 10 can reduce the likelihood of solids accumulating and decaying, thereby reducing the likelihood of objectionable odors. Bothair systems processor contactor assembly 102. - At least one
BPP tank 200 and any other second stage biological processors engaged in sewage and wastewater treatment for a specific application, may be downstream of and may receive the outflow from RBP tanks 100 a, 100 b. - The at least one
BPP tank 200 may include a drain or waste sludge pump for cleaning purposes. TheBPP tank 200 can further include a plurality ofpendant media sheets 210. The appropriate size and quantity of thependant media sheets 210 may be determined according to computations from known factors for a specific treatment application.Pendant media sheets 210 can facilitate the second stage biological process and can provide a surface for supporting the growth of microorganisms, thereby facilitating the microorganisms to decompose and purify residual contaminants and pollutants contained in the sewage and wastewater. The sewage and wastewater is thus purified while intank 200. - The microorganisms that are used to seed
BPP 200 and more specificallypendant media 210 may be, for example, desired naturally occurring Bacillus species bacteria, various rotifers, protozoa and metazoa. Known nutrient activators appropriate for the particular treatment application may be utilized to stimulate growth of microorganisms during initial treatment process startup. - The at least one
BPP tank 200 may be constructed with both tubular fineair bubble diffusers 9 and subsurfaceair manifold pipes 10. These air devices may be supplied with air generated by at least oneblower 11 and may be sized according to computations for a specific treatment application. - The air supplied by at least one
blower 11 to tubular finebubble air diffusers 9 via air pipe 11 a and inline air regulator 11 b may have multiple functionality. First, the air may provide two equal and simultaneous functions, those being to inoculate the wastewater with oxygen and to mobilize the MLSS in thebiological processor tank 200. The rate of air supplied to the fine bubbletubular diffusers 9 can be provided so as to maintain the appropriate dissolved oxygen level in the wastewater in theprocessor tank 200. As the fine air bubbles rise from tubularfine air diffusers 9, the wastewater can circulate with turbulent flow, causing the MLSS to mix and churn throughout theBPP tank 200 and further causing the sewage and wastewater to come in contact with the microorganisms onpendant media sheets 210. This contact can allow further effluent purification to occur. - The air supplied by at least one
blower 11 through air pipe 11 a tobottom air manifold 10 in theBPP tanks 200 may also have dual functionality. First, the air supplied viamanifold 10 may facilitate scouring the bottom of the tank. The scouring functionality may be initiated for a desired period of time and at a desired interval, for example, on a four-day interval basis to facilitate resuspension of settled solids. Second, the air supplied viamanifold 10 can reduce the likelihood of solids accumulating and decaying, thereby reducing the likelihood of objectionable odors. Bothair systems pendant media sheets 210 during the treatment process. - At least one
sedimentation tank 14 can facilitate separation of the treated MLSS outflowing fromBPP tank 200. The appropriate size for thesedimentation tank 14 can be determined according to computations from known factors for a specific treatment application. If desired for a specific treatment application, further purification of treated sewage and wastewater out flowing fromsedimentation tank 14 can be achieved by afiltration device 18. The appropriate type, kind and capability offiltration device 18 may be determined by computation for a specific treatment application, andfiltration device 18 may be a filtering device known in the art. -
Filtration device 18, disposed betweensedimentation tank 14 andUV disinfection units 20 can facilitate removing any residual very fine suspended solids so as to achieve a supernatant reading of approximately two nephelometric turbidity units (NTU). Filtered solids 18 a removed byfiltration device 18 can then be moved todewatering device 17, while the supernatant filtrate 18 b may be moved to flowmeter 19 and subsequently toUV light units 20 for disinfection. - UV
light units 20 may be configured such that the supernatant filtrate 18 b inflows to a series of at least two UV light units, wherein supernatant filtrate 18 b may be disinfected. Disinfection of supernatant filtrate 18 b by the UV light units can involve the elimination of any living organism in the supernatant filtrate. RedundantUV light units 20 may be provided so as to accommodate servicing and lamp replacement without sacrificing treatment and disinfection efficacy, as well as to satisfy regulatory standards for process redundancy, performance consistency, and capability. To this end, a plurality of parallel pathways 21 a, 21 b for supernatant filtrate flow may be provided. The parallel pathways 21 a, 21 b may be operated one at a time. Thus, the supernatant filtrate flow may be directed, for example by a valve, through pathway 21 a or through pathway 21 b. This can allow the inactive pathway to be appropriately cleaned and any necessary components replaced. Furthermore, an additionalUV light unit 20 may be provided downstream of both pathway 21 a and 21 b. - In an alternative embodiment, as shown in
FIG. 6 a, a single UVlight disinfection channel 22 may be provided in lieu oflight units 20 and channels 21 a, 21 b. In thesingle channel 22, as shown inFIG. 6 b, multipleindependent banks 23 of removable UV lights can be disposed, with the design and specifications of the lights being determined by calculations known in the art. Eachlight bank 23 may be operated independently of the otherlight banks 23. Furthermore, only a singlelight bank 23 may be deactivated at a time, thereby providing a quantity of operating lamps to meet the above-described standards. - In regards to precipitated sludge 14 b from
sedimentation tank 14, a portion thereof may be pumped via areturn sludge pump 15 and pipe 15 a as return activated sludge. The appropriate pumping interval and duration of pumping may be determined according to computations from known factors for a specific treatment application. The return pumping of the precipitated sludge can facilitate resupplying microorganisms to flow adjustment tank 6 for further dispersal of the microorganisms in and through RBP tanks 100 a, 100 b andBPP tank 200. Anexcess sludge pump 16 may be employed to pump excess precipitated sludge fromsedimentation tank 14 and to move the excess sludge to adewatering device 17. The type of dewatering device may be determined according to the specific treatment application. The sludge cake 17 b from dewateringdevice 17 may be disposed offsite, while the decant 17 a may be returned to flow adjustment tank 6. If required, the UV treatedeffluent 30 out flowing fromUV light units 20 may be discharged to a discharge holding tank for temporary storage for regulatory purposes prior to final discharge. - Turning to
FIG. 5 , a third exemplary embodiment of a system for sewage andwastewater purification treatment 500 may be disclosed.System 500 may be adapted for decomposing and purifying high strength (biochemical oxygen demand of 2,500-10,000 mg/l) sewage and wastewater.System 500 may include a general automatic screening device 2 and screening compactor 2 a, anequalization basin 3, a flow adjustment tank 6, a first set of first stage biological processor tanks, which may be RBP tanks 100 a, 100 b, 100 c, with rotarymedia disk assembly 102, at least one second set of first stage biological processor tanks, which may be RBP tanks 100 d, 100 e, with rotarymedia disk assembly 102, at least one second stage biological processor tank, which may be aBPP tank 200, with stationary pendant media formicrobe adherence 210, asedimentation tank 14, asludge dewatering device 17, asupernatant filtering device 18, aflow meter device 19, andUV disinfection components 20. - The general automatic screening device 2 for removing coarse contaminants can remove suspended solids greater than 5 mm in size from the inflowing sewage and wastewater via an inlet pipe 1. After screening, the effluent can move to
equalization basin 3, while the coarse contaminant removed by screening device 2 can be moved to a screening compactor 2 a, whereby the captured screenings may be washed and compressed. The decant liquid 2 b from screening compactor 2 may be moved toequalization basin 3 while the compacted screenings 2 c can be disposed offsite. - The
equalization basin 3 is where the influent may be temporarily staged to allow the varying inflow rates to intermix. Such influent blending facilitates increasing the overall wastewater uniformity, quality and treatment efficiency.Equalization basin 3 can include an air distribution pipe 4 and an air supply pipe 11 a which may be pressurized by air supplied by at least oneblower 11, via an air pressure regulator 11 b disposed inline at each installed air supply pipe 11 a so as to appropriately regulate the necessary air delivery rate. The appropriate airflow rate per minute and per unit volume can be computed for each specific treatment application. Injecting air intoequalization basin 3 can facilitate reducing the likelihood of the stratification of suspended solids which may result in surface caking or solids deposition, as well as reducing the likelihood of putrefaction occurring. - A raw
water feed pump 5 may be provided to transfer the influent fromequalization tank 3 to flow adjustment tank 6. Flow adjustment tank 6 may be provided to distribute the sewage and wastewater such that the influent flows uniformly into each RBP tank 100 a, 100 b or similarly to all and any first stage biological processors engaged in the sewage and wastewater treatment process. The flow to the at least one second set of RBP tanks 100 d, 100 e may be the combined outflows of tanks 100 a, 100 b, 100 c, which can then be equally divided between tanks 100 d, 100 e, and any further tanks. The appropriate sizes of RBP tanks 100 a, 100 b, 100 c, 100 d, 100 e may be determined according to computations from known factors for a specific treatment application. Each tank may include a bottom drain, sludge pump, or access port for cleaning. Each RBP tank 100 a, 100 b 100 c, 100 d, 100 e can further include a rotating biologicalprocessor contactor assembly 102. The rotatingbiological processor contactor 102 can provide a first stage host medium, and can therefore include a plurality of media disks. In some exemplary embodiments, the rotating biologicalprocessor contactor assembly 102 can include any desired amount of disks, for example between 10 disks and 30 disks, which can provide a surface for supporting the growth of microorganisms, and facilitate the microorganisms to decompose and purify contaminants and pollutants contained in the sewage and wastewater, further purifying it in the RBP tanks 100 d, 100 e. The microorganisms that are used to seed the RBP tanks 100 a, 100 b, 100 c, 100 d, 100 e and more specifically the rotating biologicalprocessor contactor assembly 102 can be, for example, desired naturally occurring Bacillus species bacteria, various rotifers, protozoa and metazoa. Known nutrient activators appropriate for the particular treatment application may be utilized to stimulate growth of microorganisms during initial treatment process startup. - The RBP tanks 100 a, 100 b, 100 c, 100 d, 100 e may include fine air bubble
tubular diffusers 9 and bottomair manifold pipes 10. Theair devices blower 11 and may be sized according to computations for a specific treatment application. - The air supplied by at least one
blower 11 to fine air bubbletubular diffusers 9 via air regulator 11 b and air pipe 11 a in the RBP tanks 100 a, 100 b, 100 c, 100 d, 100 e may have dual functionality. First, the air supplied viadiffusers 9 can provide a supplemental air supply to facilitate maintaining appropriate dissolved oxygen levels in RBP tanks 100 a, 100 b, 100 c, 100 d, 100 e. Furthermore, the air supplied viadiffusers 9 can facilitate dislodging and sloughing off excess or old biomass from the biofilm layer on rotating biologicalprocessor contactor assembly 102. - Likewise, the air supplied by at least one
blower 11 tosubsurface air manifold 10 in the RBP tanks 100 a, 100 b, 100 c, 100 d, 100 e may have dual functionality. First, the air supplied viamanifold 10 may facilitate scouring the bottom of the tank. The scouring functionality may be initiated for a desired period of time and at a desired interval, for example, on a bidaily basis to facilitate resuspension of settled solids. Second, the air supplied viamanifold 10 can reduce the likelihood of solids accumulating and decaying, thereby reducing the likelihood of objectionable odors. Bothair systems processor contactor assembly 102. - At least one
BPP tank 200 and any other second stage biological processors engaged in sewage and wastewater treatment for a specific application, may be downstream of and may receive the outflow from the at least one second set of RBP tanks 100 d, 100 e, which in turn receives their treated effluent from first set of RBP tanks 100 a, 100 b, 100 c. - The at least one
BPP tank 200 may include a drain or waste sludge pump for cleaning purposes.BPP tank 200 can further include a plurality ofpendant media sheets 210. The appropriate size and quantity of thependant media sheets 210 may be determined according to computations from known factors for a specific treatment application.Pendant media sheets 210 can facilitate the second stage biological process and can provide a surface for supporting the growth of microorganisms, thereby facilitating the microorganisms to decompose and purify residual contaminants and pollutants contained in the sewage and wastewater. The sewage and wastewater is thus purified while inBPP tank 200. - The microorganisms that are used to seed
BPP tank 200 and more specificallypendant media 210 may be, for example, desired naturally occurring Bacillusspecies bacteria, various rotifers, protozoa and metazoa. Known nutrient activators appropriate for the particular treatment application may be utilized to stimulate growth of microorganisms during initial treatment process startup. - The at least one
BPP tank 200 may be constructed with both tubular fineair bubble diffusers 9 and subsurfaceair manifold pipes 10. These air devices may be supplied with air generated by at least oneblower 11 and may be sized according to computations for a specific treatment application. - The air supplied by at least one
blower 11 to tubular finebubble air diffusers 9 via air pipe 11 a and inline air regulator l lb may have multiple functionality. First, the air may provide two equal and simultaneous functions, those being to inoculate the wastewater with oxygen and to mobilize the MLSS in theBPP tank 200. The rate of air supplied to the fine bubbletubular diffusers 9 can be provided so as to maintain the appropriate dissolved oxygen level in the wastewater in theBPP tank 200. As the fine air bubbles rise from tubularfine air diffusers 9, the wastewater can circulate with turbulent flow, causing the MLSS to mix and churn throughout theBPP tank 200 and further causing the sewage and wastewater to come in contact with the microorganisms onpendant media sheets 210. This contact can allow further effluent purification to occur. - The air supplied by at least one
blower 11 through air pipe 11 a tosubsurface air manifold 10 in theBPP tanks 200 may also have dual functionality First, the air supplied viamanifold 10 may facilitate scouring the bottom of the tank. The scouring functionality may be initiated for a desired period of time and at a desired interval, for example, on a four-day interval basis to facilitate resuspension of settled solids. Second, the air supplied viamanifold 10 can reduce the likelihood of solids accumulating and decaying, thereby reducing the likelihood of objectionable odors. Bothair systems pendant media sheets 210 during the treatment process. - At least one
sedimentation tank 14 can facilitate separation of the treated MLSS outflowing fromBPP tank 200. The appropriate size for thesedimentation tank 14 can be determined according to computations from known factors for a specific treatment application. If desired for a specific treatment application, further purification of treated sewage and wastewater out flowing fromsedimentation tank 14 can be achieved by afiltration device 18. The appropriate type, kind and capability offiltration device 18 may be determined by computation for a specific treatment application, andfiltration device 18 may be a filtering device known in the art. -
Filtration device 18, disposed betweensedimentation tank 14 andUV disinfection units 20, can facilitate removing any residual very fine suspended solids so as to achieve a supernatant reading of approximately two nephelometric turbidity units (NTU). Filtered solids 18 a removed byfiltration device 18 can then be moved todewatering device 17, while the supernatant filtrate 18 b may be moved to flowmeter 19 and subsequently toUV light units 20 for disinfection. - UV
light units 20 may be configured such that the supernatant filtrate 18 b inflows to a series of at least two UV light units, wherein supernatant filtrate 18 b may be disinfected. Disinfection of supernatant filtrate 18 b by the UV light units can involve the elimination of any living organism in the supernatant filtrate. RedundantUV light units 20 may be provided so as to accommodate servicing and lamp replacement without sacrificing treatment and disinfection efficacy, as well as to satisfy regulatory standards for process redundancy, performance consistency, and capability. To this end, a plurality of parallel pathways 21 a, 21 b for supernatant filtrate flow may be provided. The parallel pathways 21 a, 21 b may be operated one at a time. Thus, the supernatant filtrate flow may be directed, for example by a valve, through pathway 21 a or through pathway 21 b. This can allow the inactive pathway to be appropriately cleaned and any necessary components replaced. Furthermore, an additionalUV light unit 20 may be provided downstream of both pathway 21 a and 21 b. - In an alternative embodiment, as shown in
FIG. 6 a, a single UVlight disinfection channel 22 may be provided in lieu ofUV light units 20 and channels 21 a, 21 b. In thesingle channel 22, as shown inFIG. 6 b, multipleindependent banks 23 of removable UV lights can be disposed, with the design and specifications of the lights being determined by calculations known in the art. Eachlight bank 23 may be operated independently of the otherlight banks 23. Furthermore, only a singlelight bank 23 may be deactivated at a time, thereby providing a quantity of operating lamps to meet the above-described standards. - In regards to precipitated sludge 14 b from
sedimentation tank 14, a portion thereof may be pumped via areturn sludge pump 15 and pipe 15 a as return activated sludge. The appropriate pumping interval and duration of pumping may be determined according to computations from known factors for a specific treatment application. The return pumping of the precipitated sludge can facilitate resupplying microorganisms to flow adjustment tank 6 for further dispersal of the microorganisms in and through RBP tanks 100 a, 100 b andBPP tank 200. Anexcess sludge pump 16 may be employed to pump excess precipitated sludge fromsedimentation tank 14 and to move the excess sludge to adewatering device 17. The type of dewatering device may be determined according to the specific treatment application. The sludge cake 17 b from dewateringdevice 17 may be disposed offsite, while the decant 17 a may be returned to flow adjustment tank 6. If required, the UV treatedeffluent 30 out flowing fromUV light units 20 may be discharged to a discharge holding tank for temporary storage for regulatory purposes prior to final discharge. - If necessary, while employing any of the embodiments of
system - Furthermore, embodiments disclosed herein can facilitate a substantial reduction or offset of energy usage between the various treatment modes, which are the
RBP 100,BPP 200 andsedimentation tank 14. Once the influent has been pumped to theRBP 100, the treated effluent can then flow by gravity to theBPP 200, and can subsequently flow by gravity to thesedimentation tank 14. The elimination of pumping requirements between various stages of treatment can reduce power consumption as well as initial capital and ongoing operational cost. - In some exemplary embodiments, as shown in
FIG. 7 , theRBP 100,BPP 200, andsedimentation tank 14 may be provided as anintegrated processing unit 700.Integrated processing unit 700 may be used with any of the embodiments ofsystem - The foregoing description and accompanying figures illustrate the principles, preferred embodiments and modes of operation of the invention. However, the invention should not be construed as being limited to the particular embodiments discussed above. Additional variations of the embodiments discussed above will be appreciated by those skilled in the art.
- Therefore, the above-described embodiments should be regarded as illustrative rather than restrictive. Accordingly, it should be appreciated that variations to those embodiments can be made by those skilled in the art without departing from the scope of the invention as defined by the following claims.
Claims (20)
1. An apparatus for wastewater treatment, comprising:
a containment basin for receiving a liquid to be treated, the liquid having a direction of flow;
a plurality of pendant sheets for supporting the growth of microorganisms, disposed within the basin and in contact with the liquid; and
at least one fine bubble diffuser disposed within the basin and oriented perpendicularly to the pendant sheets;
wherein the pendant sheets are oriented parallel to the direction of flow of the liquid.
2. The apparatus of claim 1 , wherein each of the plurality of pendant sheets further comprises:
a radicalized resin fiber network media; and
a thixed, prepromoted unsaturated wax orthopolyester resin.
3. The apparatus of claim 1 , wherein each of the plurality of pendant sheets has a thickness of about 25 millimeters.
4. The apparatus of claim 1 , wherein each of the plurality of pendant sheets is suspended within the basin in a vertical orientation.
5. (canceled)
6. The apparatus of claim 1 . wherein the liquid is effluent from a rotating biological processor.
7. A system for wastewater treatment, comprising:
at least one rotating biological processor; and
at least one pendant biological processor disposed downstream of the at least one rotating biological processor;
wherein the at least one pendant biological processor further comprises a containment basin for receiving wastewater, the wastewater having a direction of flow;
a plurality of pendant sheets for supporting the growth of microorganisms, disposed within the basin and in contact with the wastewater, the pendant sheets being oriented parallel to the direction of flow of the wastewater; and
at least one fine bubble diffuser disposed within the basin and oriented perpendicularly to the pendant sheets.
8. The system of claim 7 , wherein each of the plurality of pendant sheets comprises:
a radicalized resin fiber network media; and
a thixed, prepromoted unsaturated wax orthopolyester resin.
9. (canceled)
10. The system of claim 7 , wherein the at least one rotating biological processor includes a plurality of media disks, each of the plurality of media disks comprising a radicalized resin fiber network media and a thixed, prepromoted unsaturated wax orthopolyester resin.
11. The system of claim 7 , further comprising at least two rotating biological processors arranged in parallel.
12. The system of claim 7 , further comprising at least two rotating biological processors arranged in series.
13. The system of claim 7 , further comprising at least one ultraviolet disinfection unit disposed downstream of the at least one pendant biological processor.
14. The system of claim 7 , wherein the wastewater flows from the rotating biological processor to the pendant biological processor due to gravity.
15. A process for wastewater treatment, comprising:
flowing wastewater into a containment basin, the basin having a plurality of pendant sheets suspended therein;
flowing the wastewater in a direction parallel to the plurality of pendant sheets;
activating, at predetermined intervals, a fine bubble diffuser disposed within the basin; and
flowing the wastewater out of the basin;
wherein the pendant sheets support the growth of microorganisms for treating the wastewater; and
the at least one fine bubble diffuser is oriented perpendicularly to the pendant sheets.
16. The process of claim 15 , further comprising:
flowing the wastewater into the basin from at least one rotating biological processor.
17. (canceled)
18. The process of claim 15 , further comprising:
increasing floc levels without the use of polymer coagulants; and
increasing settleability rates in the basin without the use of polymer coagulants.
19. The process of claim 15 , further comprising:
flowing the wastewater from the basin into a sedimentation tank;
precipitating a sludge from the wastewater in the sedimentation tank; and
utilizing a portion of the sludge to resupply microorganisms to the basin.
20. The process of claim 15 , further comprising:
flowing the wastewater through at least one ultraviolet disinfection unit.
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US13/747,240 US20130256219A1 (en) | 2012-04-02 | 2013-01-22 | Apparatus, system and process for wastewater purification |
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US13/437,554 US8382985B1 (en) | 2012-04-02 | 2012-04-02 | Apparatus, system and process for wastewater purification |
US13/747,240 US20130256219A1 (en) | 2012-04-02 | 2013-01-22 | Apparatus, system and process for wastewater purification |
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US13/437,554 Continuation US8382985B1 (en) | 2012-04-02 | 2012-04-02 | Apparatus, system and process for wastewater purification |
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US20130256219A1 true US20130256219A1 (en) | 2013-10-03 |
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US13/437,554 Expired - Fee Related US8382985B1 (en) | 2012-04-02 | 2012-04-02 | Apparatus, system and process for wastewater purification |
US13/747,240 Abandoned US20130256219A1 (en) | 2012-04-02 | 2013-01-22 | Apparatus, system and process for wastewater purification |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10888807B2 (en) * | 2016-08-12 | 2021-01-12 | Evoqua Water Technologies Llc | Disc filter pre-screen dual media disc filter |
US11000791B2 (en) * | 2019-03-06 | 2021-05-11 | Veolia Water Solutions & Technologies Support | Rotary disc filter having backwash guides |
US11299412B2 (en) * | 2014-09-08 | 2022-04-12 | Fluence Water Products And Innovation Ltd. | Module, reactor, system and method for treating water |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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IL253649B (en) * | 2017-07-25 | 2018-08-30 | Sverit Ltd | Wastewater purification unit with a multilayer cluster of fabric elements |
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US3235234A (en) * | 1963-02-11 | 1966-02-15 | Pacific Flush Tank Co | Apparatus for aerating water |
US5096579A (en) * | 1990-10-05 | 1992-03-17 | Unisyn | Anaerobic digester |
US6348147B1 (en) * | 2000-05-31 | 2002-02-19 | Fbc Technologies, Inc. | Fluid flow system for floating biological contactor |
US20050269262A1 (en) * | 2004-06-02 | 2005-12-08 | Gl&V Management Hungary Kft. | Biological film support module for wastewater treatment system |
US7520980B2 (en) * | 2004-12-13 | 2009-04-21 | Aquarius Environmental Technologies Ltd. | Bioreactor system for multi-stage biological wastewater treatment |
CA2550018C (en) * | 2005-06-09 | 2015-08-04 | Manuel Alvarez Cuenca | Active biological contactor (abc): a modular wastewater treatment system |
US7820048B2 (en) * | 2005-10-06 | 2010-10-26 | Roni Weissman | Method and system for treating organically contaminated waste water |
US7465394B2 (en) * | 2006-09-05 | 2008-12-16 | Aeration Industries International, Inc. | Wastewater treatment system |
US7452469B1 (en) * | 2007-06-12 | 2008-11-18 | Kyung Jin Kim | Apparatus having rotary activated Baccillus contractor for purifying sewage and wastewater and method using the same |
-
2012
- 2012-04-02 US US13/437,554 patent/US8382985B1/en not_active Expired - Fee Related
-
2013
- 2013-01-22 US US13/747,240 patent/US20130256219A1/en not_active Abandoned
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11299412B2 (en) * | 2014-09-08 | 2022-04-12 | Fluence Water Products And Innovation Ltd. | Module, reactor, system and method for treating water |
US10888807B2 (en) * | 2016-08-12 | 2021-01-12 | Evoqua Water Technologies Llc | Disc filter pre-screen dual media disc filter |
US11000791B2 (en) * | 2019-03-06 | 2021-05-11 | Veolia Water Solutions & Technologies Support | Rotary disc filter having backwash guides |
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US8382985B1 (en) | 2013-02-26 |
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