WO2004035488A1 - Deep shaft treatment plant for liquid wastes - Google Patents
Deep shaft treatment plant for liquid wastes Download PDFInfo
- Publication number
- WO2004035488A1 WO2004035488A1 PCT/IT2003/000630 IT0300630W WO2004035488A1 WO 2004035488 A1 WO2004035488 A1 WO 2004035488A1 IT 0300630 W IT0300630 W IT 0300630W WO 2004035488 A1 WO2004035488 A1 WO 2004035488A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- reactor
- sludge
- air
- tank
- waste water
- Prior art date
Links
- 238000011282 treatment Methods 0.000 title description 3
- 239000010808 liquid waste Substances 0.000 title 1
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 6
- 230000033228 biological regulation Effects 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000010802 sludge Substances 0.000 claims description 23
- 238000005188 flotation Methods 0.000 claims description 11
- 238000007254 oxidation reaction Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 8
- 239000003295 industrial effluent Substances 0.000 claims description 7
- 238000004064 recycling Methods 0.000 claims description 7
- 238000004062 sedimentation Methods 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000003153 chemical reaction reagent Substances 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 238000000265 homogenisation Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000004659 sterilization and disinfection Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 3
- 230000007613 environmental effect Effects 0.000 claims 2
- 238000000605 extraction Methods 0.000 claims 2
- 238000011084 recovery Methods 0.000 claims 2
- 208000005156 Dehydration Diseases 0.000 claims 1
- 239000003518 caustics Substances 0.000 claims 1
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 238000007873 sieving Methods 0.000 claims 1
- 229910001220 stainless steel Inorganic materials 0.000 claims 1
- 239000010935 stainless steel Substances 0.000 claims 1
- 239000010421 standard material Substances 0.000 claims 1
- 239000002351 wastewater Substances 0.000 claims 1
- 238000012986 modification Methods 0.000 abstract description 2
- 230000004048 modification Effects 0.000 abstract description 2
- 238000000746 purification Methods 0.000 abstract description 2
- 230000009467 reduction Effects 0.000 description 7
- 239000002002 slurry Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 239000003643 water by type Substances 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000001459 mortal effect Effects 0.000 description 2
- 230000004224 protection Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
-
- 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
- C02F3/12—Activated sludge processes
- C02F3/22—Activated sludge processes using circulation pipes
- C02F3/226—"Deep shaft" processes
-
- 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
- C02F3/12—Activated sludge processes
- C02F3/22—Activated sludge processes using circulation pipes
- C02F3/223—Activated sludge processes using circulation pipes using "air-lift"
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
- C02F2209/006—Processes using a programmable logic controller [PLC] comprising a software program or a logic diagram
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- 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
- C02F3/12—Activated sludge processes
-
- 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
- C02F3/12—Activated sludge processes
- C02F3/20—Activated sludge processes using diffusers
-
- 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
- the object of the present invention is a waste water treatment system for domestic and industrial polluted effluents, having as a goal the purification of the polluted water to withing the acceptability limits, as set by local regulations.
- Fig 1 shows a block diagram (layout) of the plant
- Fig 2 shows a prospective view of the plant
- Fig 3 shows a section of the flotation-sedimentation tank
- Fig 4 shows a section of the vertical reactor
- Fig 5 shows a lateral view and a view of the flotation tank
- Fig 6 shows a view of the diffuser of the reactor
- Fig 7 shows a section and a plan of the diffusers of the reactor and their placing
- Fig 8 shows a plan and section of the sludge collection system.
- waste water treatment plant for domestic and industrial effluents has the components and the process which are described as follows:
- the polluted effluent (1) goes to the lifting pump (2) in which are installed the electropumps which send the same, after a measurement of the flow through an electronic instrument, to a fine screening unit (3).
- This unit is a rotating drum with space between the bars between 2 and 4 mm. In this way, any coarse solid will not pass to the successive phases thus avoiding the possibility of clogging and therefore plant stoppages.
- this tank In this tank are installed a series of diffusers of air, oxigen and other gases, varying with the type of slurry to be treated, fed by low pressure blowers. This insufflation provokes a re-mixing of the fluid, and their chemical and biological oxydation including the dissolution of other gases possibly present in them.
- a series of electronic gauges connected to indicators which regulate automatically the operating time of the blowers through or valves: pH, °C, O 2 , redox.
- a VERTICAL REACTOR (6) On the bottom of the oxydation/homogeneization tank(5), in a position calculated in function of the composition of the slurry to be treted, is built a VERTICAL REACTOR (6), in which the polluted effluent enters by gravity and flows from top to bottom all along the length of the reactor which is 50- 80 m.
- the reactor may be also installed outside the oxidation biological denitrification homogenisation tank.
- an air pump called air-lift is installed together with a series of air or gaseous oxygen micropored diffusers (7), located at different levels and fed through high pressure compressors (16).
- a series of bubes from which is possible to collect samples of the mixture at different depths sending them to special containers so to determine in real time, visually and instrumentally, the state of depuration process as well as the biological phenomena which take place inside the vertical reactor.
- the air-lift has the purpose of sending the water-gas-sludge mixture to the successive flotation phase (10) which is made up of a specially shaped and sized room, built in PRFN in order to have the necessary rigidity and resistance to the chemico-physical actions of the polluted fluid.
- This flotation unit is supplied with specifically adjustable openings (8) in order to facilitate the recycling of the floating mixture and others (9) for the outflow of the depurated slurry, located in such a way obtain the best result in this phase.
- the final sedimentation takes place in the same concrete tank of the flotation unit (10), but separated from it with specifically adjustable weirs.
- the clean waters (11) are successively subjected to a treatment of disinfection by means of controlled dosing of specific reagents, before being introduced, after going through a flow gauge, into the final receptor.
- a treatment of disinfection by means of controlled dosing of specific reagents, before being introduced, after going through a flow gauge, into the final receptor.
- This final phase makes the waters fit for irrigation or industrial use.
- the plant is supplied with a remote-control, with a proprietary set of hardware and software in order to allow the remote management of the system and the registration in real time of the key operational parameters of the plant.
- the remote-control unit is modular and therefore may be added in any moment, and, in case of breakdown, can be repaired by replacing the electronic cards.
- All signals may be visualised on the monitor of a PC installed in the switchboard room and transmitted through a modem.
- the plant capacity is variable from 1.000 inhabitants equivalent to 30.000, bat because of the absolute modulary of the plant, it is possible to reach capacities of up to 100/200.000 inhab.eq.
- the plant which is built completely underground and is covered on top, is supplied normally with a lifting station which may located near the small pit of sludge collection, and can therefore be located outside the monoblock containing all the epurative phases of plant. If possible, however, also the lifting may be included in the monoblock, thus facilitating the civil works and the assembly of all electromechanical equipment, being they all located in the same building.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Physical Water Treatments (AREA)
Abstract
The object of the present invention is a waste water treatment system for domestic and industrial polluted effluents, having as a goal the purification of the polluted water to within the acceptability limits, as set by local regulations. In particular, beside some original equipment and methodologies, other possible combinations of processes and equipmrnt are described, which enhance, when assembled together, the depuration of the effluent to be treated. The system is based on a methodology, already well know worldwide as 'deep shaft', but introduces a series of modifications which, using a mix of traditional and innovative equipment, make the system completely different from any other standard plant, presently available on the market.
Description
Description
DEEP SHAFT TREATMENT PLANT FOR LIQUID WASTES
Technical field
The object of the present invention is a waste water treatment system for domestic and industrial polluted effluents, having as a goal the purification of the polluted water to withing the acceptability limits, as set by local regulations.
In particular, beside some original equipment and methodologies, other possible combinations of processes and equipment are described, which enhance, when assembled together, the depuration of the effluent to be treated. The system is based on a methodology, already well know worldwide as "deep shaft", but introduces a series of modifications which, using a mix of traditional and innovative equipment, make the system completely different from any other standard plant, presently available on the market.
The existing deep shaft plant have shown a series of problems, in particular:
1. Excessive depth of excavation (100 m) even with diameters of 5 m
2. Possibility of either the polluted effluent flowinh out of the well or of the watertable flowing into the reactor, this being made concrete and protected with metallic material
3. High throughput time of the effluent inside the reaction tanks with 5 need of several recyclings of the effluent inside the reactor, with high energy costs
4. The nitrification and denitrification of the polluted effluent does not take place
5. Big problems in the sedimentation due to the presence of floating T o solids (bulking phenomenon which is difficult to control)
6. Difficulty in the removal of the additional sludge, deposited on the surface and in the bottom of the sedimentation tank, because of insufficient slope and not adeguate sludge cleaning equipment
Summary of the invention 15 The present invention has solved the above problems in the following ways:
1. Lower depth of escavation at 50-80 m and, ayt the same time, reduction of the diameter to a maximum of about 1 m, when choosing the solution with two or more modules. The reducation 20 o the diameter favours the formation of more stable fluidized beds-because of the smaller dimensions-also at the changing of the rates of the descending arid ascending liquid flows in the mixture water-gas.
2. Execution of escavation with normal drilling-machines, complemented by protection of the hole with steel casing and filling of the space between casing and walls with cement mortal, and then, after the hole and protections have been completed, insertion of vertical reactor with an BDDPE botton inside the casing and filling of the void between casing and HDPE with medium grained gravel and cement mortal on the top.
3. Lowering of the retention time with the control of "biofiltering" in the fluidized beds. 4. The nitrification and successive denitrification will now take place through the realization of a recycling pit for the sludge coming from the reactor 5. Elimination of floating solids in the sedimentation through the combined use of flotation tank and lamellar packs 6. Possibility of new geometrical configurations which will allow a better removal of the sludge from the bottom of the sedimentation 7. Higher chemical oxydation capacity with air and/or gaseous oxigen ias a consequence of the time spent at pressures progressively increasing-with depth-from 0 to 7 ate Description of the dxawinfis
The above is only a summary description which will be better understood from the following detailed description and attached drawings: Fig 1 shows a block diagram (layout) of the plant Fig 2 shows a prospective view of the plant
Fig 3 shows a section of the flotation-sedimentation tank
Fig 4 shows a section of the vertical reactor
Fig 5 shows a lateral view and a view of the flotation tank
Fig 6 shows a view of the diffuser of the reactor Fig 7 shows a section and a plan of the diffusers of the reactor and their placing
Fig 8 shows a plan and section of the sludge collection system.
Detailed description of the invention
Making reference to the above drawings the waste water treatment plant for domestic and industrial effluents, as per the present invention, has the components and the process which are described as follows:
The polluted effluent (1) goes to the lifting pump (2) in which are installed the electropumps which send the same, after a measurement of the flow through an electronic instrument, to a fine screening unit (3). This unit is a rotating drum with space between the bars between 2 and 4 mm. In this way, any coarse solid will not pass to the successive phases thus avoiding the possibility of clogging and therefore plant stoppages. The solids stopped in the screen, after eventual comparation, go to a box while the effluent undergoes treatments of desliming and desoiling (4) before entering the denitrification unit. From here, through gravity, the slurry is send to the oxidation, biological denitrification, homogenisation (5).
In this tank are installed a series of diffusers of air, oxigen and other gases, varying with the type of slurry to be treated, fed by low pressure
blowers. This insufflation provokes a re-mixing of the fluid, and their chemical and biological oxydation including the dissolution of other gases possibly present in them.
In the tank is also installed a series of electronic gauges connected to indicators which regulate automatically the operating time of the blowers through or valves: pH, °C, O2, redox.
On the bottom of the oxydation/homogeneization tank(5), in a position calculated in function of the composition of the slurry to be treted, is built a VERTICAL REACTOR (6), in which the polluted effluent enters by gravity and flows from top to bottom all along the length of the reactor which is 50- 80 m. The reactor may be also installed outside the oxidation biological denitrification homogenisation tank.
Inside the reactor (6) an air pump called air-lift is installed together with a series of air or gaseous oxygen micropored diffusers (7), located at different levels and fed through high pressure compressors (16). Moreover, there are a series of bubes from which is possible to collect samples of the mixture at different depths sending them to special containers so to determine in real time, visually and instrumentally, the state of depuration process as well as the biological phenomena which take place inside the vertical reactor. The dimensions of the air-liftcalculated by the plant designer.
The air-lift has the purpose of sending the water-gas-sludge mixture to the successive flotation phase (10) which is made up of a specially shaped and
sized room, built in PRFN in order to have the necessary rigidity and resistance to the chemico-physical actions of the polluted fluid.
This flotation unit is supplied with specifically adjustable openings (8) in order to facilitate the recycling of the floating mixture and others (9) for the outflow of the depurated slurry, located in such a way obtain the best result in this phase.
The final sedimentation takes place in the same concrete tank of the flotation unit (10), but separated from it with specifically adjustable weirs.
This is favoured also by the installation of properly sized dimensioned lamellar packs as well as by a series of trommels which help the downflow of the sludge in the spurt zone for its successive recirculation through a submersible electropump. The recycling of the floated sludge, containing an high percentage of dissolved oxygen, is realized by cavity: the sludge falls into a specifically built pit where recycling pumps are installed. These can be adjusted both manually and automatically, according to the circumstance, to send the oxydizing sludge either to the denitrification or to the dehidration (14) through properly placed and easy to reach valves.
The clean waters (11) are successively subjected to a treatment of disinfection by means of controlled dosing of specific reagents, before being introduced, after going through a flow gauge, into the final receptor. In case of a request of the client, it is possible to realize a final filtering of the depurated waters through dosing of chemical reagents, so to further lower the concentrations of impurities in the outflow. This final phase makes the waters fit for irrigation or industrial use.
The plant is supplied with a remote-control, with a proprietary set of hardware and software in order to allow the remote management of the system and the registration in real time of the key operational parameters of the plant. The remote-control unit is modular and therefore may be added in any moment, and, in case of breakdown, can be repaired by replacing the electronic cards.
All signals may be visualised on the monitor of a PC installed in the switchboard room and transmitted through a modem.
All the elements of the switchboard can be easily replaced in order to ease the maintenance process.
The same is also true for the electronic equipment and sensors installed in the measuring devices already described in the tanks and in the central units in the switchboard.
The improvements, obtainable with the vertical reactor system, described above, may be summarized as follows:
• reduced costs of construction because of the extremely reduced dimensions of the tanks when compared to the traditional plant
• realization in a compact and modular structure ("monoblock") of all the epurative phases of the plant • standardization of the conceptual designs with consequent economic and technical benefits
• reduction of spaces, especially the footprint of the plant
• elimination of all equipment and civil works, except for a small service room, which can be shaped as a civil dwelling
• possibility of different use of ground previously iccupied by the "traditional" plant (as parking lots or walking areas), because the plant is built underground and is covered on top
• reduced installed power, for instance for air compression and consequent reduction of the electricity usage
• reduction of sludge production with savings on the sludge disposal costs
• elimination of undesired odours, because the plant is totally underground • absence of noise for the same reasons
• ease of maintenance and management
• possibility of remote-control with reduction of personnel costs
• drastic reduction of erection time
• reduction of start-up timing because of the need of a small activated biological mass to archive starty-up
The plant capacity is variable from 1.000 inhabitants equivalent to 30.000, bat because of the absolute modulary of the plant, it is possible to reach capacities of up to 100/200.000 inhab.eq.
The plant, which is built completely underground and is covered on top, is supplied normally with a lifting station which may located near the small pit of sludge collection, and can therefore be located outside the monoblock containing all the epurative phases of plant.
If possible, however, also the lifting may be included in the monoblock, thus facilitating the civil works and the assembly of all electromechanical equipment, being they all located in the same building.
Claims
1. Waste water plant for domestic and industrial effluents based on a compact vertical rector with low environmental impact, made of: a lifting station (1) of the effluent; fine sieving unit (3) with rotating drum with bar interspace between 2-4 mm; tanks (4) of desliming, desoiling and denitrification; oxidation biological denitrification homogenisation tank. (5); air or oxygen diffusers, located in the tank, and fed through low head blowers (5); vertical reactor (6) of oxydation and denitrification at the bottom of the tank (5); air pump-air-lift-installed inside the reactor; series of air or gaseous oxygen micropored diffusers installed inside the reactor
(6) and located at different levels; high head compressors for feeding the diffusers and air-lift inside the reactors; compressor for injecting air in the tanks (4,5); pipes for collecting samples of mixture at different depths in order to verify the state of depuration process and the biological phenomena inside the reactor (6); flotation tank (10) opportunely shaped; adjustable openings for the recirculation of the floating sludge; adjustable openings for the outflow of the depurated effluent; lamellar packs inside the flotation tank, adeguately dimensioned; series of trommels inside the flotation tanks in order to ease the outflow of the sludge in the spurt zone for the subsequent recirculation of the sludge; submersible pump for the recirculation of sludge; sludge collection pit; recirculation pumps which will send the sludge to oxydation, denitrification or dehydratation; disinfection tank with controlled dosing of reagents in which the treated water will flow.
2. Waste water treatment plant for domestic and industrial effluents based on a compact vertical reactor low environmental impact, according to the precedent claim, characterised by the fact that the flotation unit has one or more windows for the recycling of the overfloating material for gravity to the oxydation tank, adjustable through flow or not; this flow is facilitated by the recovery of compressed air in the arrival room of the flotation unit; the depurated water outflows outlets may be located and orinted in different positions in order to obtain the maximum separation water- sludge and the minimum of floated material in the sedimentation tank; the
W lamellar packs made of PNC and stainless steel are supplied with mixture flowing channels in order to avoid cloggings.
3. Waste water treatment plant for domesti and industrial effluents based on a compact vertical reactor with low enviromental impact, according to the precedent claims, characterised by the fact that the vertical reactor type
1^ deep-shaft (6) has the chemico-physical and biologic reactions accelerated because of the big depth and from the particularly high concentration of oxygen and/or other gases, dissolved in the mass, utilises a series of fluidized beds created by the equilibrium between the descending movement "hammer or piston type" and the lifting movement
20 of the dissolved gases, injected into the reactor by 
of high head compressors; extraction from the bottom of reactor in counterflow of gases, adequately dosed in quantity and quality.
4. Waste water treatment plant for domestic and industrial effluents based on a compact vertical reactor with low enviromental impact, according to the precedent claims, characterised by the fact thata the air-lift for the extraction of aerated mixture from the bottom of the reactor is made up from standard materials, opportunely assembled and combined; on the body of the air-lift the supports for the system of gas injection and of the sample collection are built; the air-lift is supplied with a recovery cable mounted on the last low element of the same which may be used during assemblages and maintenance.
5. Waste water treatment plant for domestic and industrial effluents based on a compact vertical reactor with low enviromental impact, according to the precedent claims, characterised by the fact that the sludge collecting unit coming from the flotation tank is installed in the homogeneization tank and is supplied with recycling pump in oxydation, in denitrification, in sludge pit; all with level gauges and electronic regulation devices for the periods of stop and go; the unit is supplied with weirs and regulation valves in order to regulate the flow of the sludge incoming from the vertical reactor.
6. Waste water treatment plant for domestic and industrial effluents based on a compact vertical reactor with low enviromental impact, according to the precedent claims, characterised by the use of micropored diffusers for the distribution of gases inside the reactor; these diffuserjS are obtained by extruded bars of sintherized material resistent to corrosive agents, contained inside the effluent; the diffusers are connected to the feeding collectors, which are built in the body of the air-lift and are anchored in order to ensure the stable position.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2003279555A AU2003279555A1 (en) | 2002-10-15 | 2003-10-15 | Deep shaft treatment plant for liquid wastes |
| EP20030772663 EP1685072A1 (en) | 2002-10-15 | 2003-10-15 | Deep shaft treatment plant for liquid wastes |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITRM2002A000523 | 2002-10-15 | ||
| IT2002RM000523 ITRM20020523A1 (en) | 2002-10-15 | 2002-10-15 | CIVIL AND INDUSTRIAL WASTE WATER PURIFIER WITH COMPACT VERTICAL REACTOR WITH REDUCED ENVIRONMENTAL IMPACT. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004035488A1 true WO2004035488A1 (en) | 2004-04-29 |
Family
ID=11456530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IT2003/000630 WO2004035488A1 (en) | 2002-10-15 | 2003-10-15 | Deep shaft treatment plant for liquid wastes |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1685072A1 (en) |
| AU (1) | AU2003279555A1 (en) |
| ES (1) | ES2332500T1 (en) |
| IT (1) | ITRM20020523A1 (en) |
| WO (1) | WO2004035488A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1849750A1 (en) * | 2006-04-04 | 2007-10-31 | Technoindustrie S.A. | Installation and process for waste water treatment with a tubular, vertical reactor |
| WO2008068794A1 (en) | 2006-12-07 | 2008-06-12 | Eureka Group S.R.L. | Deep-shaft depurator plant comprising two air-lifts |
| ITRM20110340A1 (en) * | 2011-06-28 | 2012-12-29 | H C Dev S R L | PURIFICATION SYSTEM FOR CIVIL AND INDUSTRIAL WASTEWATER WITH VERTICAL REACTOR. |
| ITRM20110341A1 (en) * | 2011-06-28 | 2012-12-29 | H C Dev S R L | PURIFICATION PLANT FOR CIVIL AND INDUSTRIAL WASTE WATERS WITH VERTICAL REACTOR, WITH IMPROVED NITROGEN TREATMENT CHARACTERISTICS. |
| WO2016179514A1 (en) * | 2015-05-07 | 2016-11-10 | Evoqua Water Technologies Llc | Advanced oxidation process methods for degasification of reactor vessel |
| KR101825914B1 (en) | 2010-04-30 | 2018-02-06 | 삼성에스디아이 주식회사 | Method of preparing lithium manganese oxide |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9304698U1 (en) * | 1993-03-25 | 1993-05-19 | Mannesmann AG, 4000 Düsseldorf | System for cleaning liquids |
| EP0552134A1 (en) * | 1992-01-10 | 1993-07-21 | Gianmaria Righetti | A sewage biological purification system |
-
2002
- 2002-10-15 IT IT2002RM000523 patent/ITRM20020523A1/en unknown
-
2003
- 2003-10-15 EP EP20030772663 patent/EP1685072A1/en not_active Withdrawn
- 2003-10-15 WO PCT/IT2003/000630 patent/WO2004035488A1/en not_active Application Discontinuation
- 2003-10-15 AU AU2003279555A patent/AU2003279555A1/en not_active Abandoned
- 2003-10-15 ES ES03772663T patent/ES2332500T1/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0552134A1 (en) * | 1992-01-10 | 1993-07-21 | Gianmaria Righetti | A sewage biological purification system |
| DE9304698U1 (en) * | 1993-03-25 | 1993-05-19 | Mannesmann AG, 4000 Düsseldorf | System for cleaning liquids |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1849750A1 (en) * | 2006-04-04 | 2007-10-31 | Technoindustrie S.A. | Installation and process for waste water treatment with a tubular, vertical reactor |
| WO2008068794A1 (en) | 2006-12-07 | 2008-06-12 | Eureka Group S.R.L. | Deep-shaft depurator plant comprising two air-lifts |
| KR101825914B1 (en) | 2010-04-30 | 2018-02-06 | 삼성에스디아이 주식회사 | Method of preparing lithium manganese oxide |
| ITRM20110340A1 (en) * | 2011-06-28 | 2012-12-29 | H C Dev S R L | PURIFICATION SYSTEM FOR CIVIL AND INDUSTRIAL WASTEWATER WITH VERTICAL REACTOR. |
| ITRM20110341A1 (en) * | 2011-06-28 | 2012-12-29 | H C Dev S R L | PURIFICATION PLANT FOR CIVIL AND INDUSTRIAL WASTE WATERS WITH VERTICAL REACTOR, WITH IMPROVED NITROGEN TREATMENT CHARACTERISTICS. |
| WO2013001554A1 (en) | 2011-06-28 | 2013-01-03 | H.C. Development S.R.L. | Sewage water depuration plant, comprising a vertical reactor, with improved nitrogen treatment |
| WO2013001555A1 (en) | 2011-06-28 | 2013-01-03 | H.C. Development S.R.L. | Sewage water depuration plant, comprising a vertical reactor |
| US20140183108A1 (en) * | 2011-06-28 | 2014-07-03 | H.C. Development S.R.L. | Sewage water depuration plant, comprising a vertical reactor, with improved nitrogen treatment |
| WO2016179514A1 (en) * | 2015-05-07 | 2016-11-10 | Evoqua Water Technologies Llc | Advanced oxidation process methods for degasification of reactor vessel |
| GB2554606A (en) * | 2015-05-07 | 2018-04-04 | Evoqua Water Tech Llc | Advanced oxidation process methods for degasification of reactor vessel |
| GB2554606B (en) * | 2015-05-07 | 2021-08-11 | Evoqua Water Tech Llc | Advanced oxidation process methods for degasification of reactor vessel |
Also Published As
| Publication number | Publication date |
|---|---|
| ITRM20020523A0 (en) | 2002-10-15 |
| ES2332500T1 (en) | 2010-02-08 |
| EP1685072A1 (en) | 2006-08-02 |
| ITRM20020523A1 (en) | 2004-04-16 |
| AU2003279555A1 (en) | 2004-05-04 |
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