CN213623484U - Membrane type anaerobic and MBBR membrane type aerobic integrated sewage treatment device - Google Patents
Membrane type anaerobic and MBBR membrane type aerobic integrated sewage treatment device Download PDFInfo
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- CN213623484U CN213623484U CN202022561883.7U CN202022561883U CN213623484U CN 213623484 U CN213623484 U CN 213623484U CN 202022561883 U CN202022561883 U CN 202022561883U CN 213623484 U CN213623484 U CN 213623484U
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- 238000011282 treatment Methods 0.000 title claims abstract description 89
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- AHEWZZJEDQVLOP-UHFFFAOYSA-N monobromobimane Chemical compound BrCC1=C(C)C(=O)N2N1C(C)=C(C)C2=O AHEWZZJEDQVLOP-UHFFFAOYSA-N 0.000 title claims abstract description 52
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Abstract
The utility model discloses a membrane type anaerobism and aerobic integrated sewage treatment plant of MBBR diaphragm type relates to the sewage treatment plant field. The utility model comprises an anaerobic tank shell, an aerobic tank shell, a die carrier, a three-phase separator, an aerobic residual sludge storage hopper, a biogas collection and storage closed chamber and an aerobic tank, wherein the anaerobic tank shell and the aerobic tank shell are arranged at the lower part; the mud-water circulation return pipe is combined and connected with the anaerobic tank discharge pipeline and then is connected with the sewage inlet pipe through mud-water circulation and an aerobic residual sludge return pipe to form a circulating structure. The utility model fully exerts the advantages of the membrane anaerobic and MBBR aerobic biomembrane method, greatly reduces the sludge production of the integrated device, improves the stability and simplicity of the operation of the integrated device, saves the land occupation and investment of the integrated device, not only ensures the operation stability of the whole system, but also has better effluent quality; solves the problems of treatment and disposal of the aerobic excess sludge.
Description
Technical Field
The utility model belongs to the field of sewage treatment devices, in particular to a membrane anaerobic and MBBR membrane aerobic integrated sewage treatment device.
Background
In recent years, with the improvement of domestic requirements for environmental protection discharge, a large number of industrial wastewater treatment facilities and town sewage treatment facilities are built in China, and according to statistics, the treatment capacity of the town sewage treatment plant built in China at present reaches 97%. However, the pollution of domestic rivers and lakes still exists, and the pollution is caused by the distributed rural sewage, the distributed livestock and poultry breeding sewage and the farmland non-point source pollution discharged from rural population areas with 50% of domestic population, and large and medium livestock and poultry breeding enterprises, small-sized urban production enterprises and the like built in the rural areas are the main sources of the current environmental pollution. Because of the dispersion of sewage generating sources and the small amount of water, the process and facilities for large-scale sewage treatment cannot be simply applied, but the process and facilities for sewage treatment which are most economical and easy to operate and have flexibly adjustable treatment capacity need to be searched.
At present, the biochemical treatment process adopted for treating the distributed rural sewage and the small-volume high-concentration organic wastewater in China mainly comprises the following steps: AO integration processing technology, A2O integration processing technology, biological rotating disc processing technology, SBR intermittent type activated sludge process, MBBR moving bed biomembrane technology, flocculent sludge anaerobic + conventional aeration technology, MBR aerobic technology and the like, most of the technologies can meet the designed discharge requirement in the process of treating the waste water, but have the following problems: (1) the method mainly adopts the aerobic treatment process of the activated sludge method, such as AO process, A2O process, SBR process, MBR process and the like, once the sewage treatment facility is built, the treatment capacity cannot be flexibly changed, the sludge yield is high, and the occupied area is large; (2) the mode of adopting a biomembrane aerobic treatment process, such as a biological rotating disk process and an MBBR process, has less sludge yield, but when the concentration of organic pollutants in the sewage is higher, the process is difficult to treat and reach the standard, and the operation cost is higher; (3) in China, similar patents adopting anaerobic and aerobic integrated devices exist, for example, the patent number CN105384250B describes an anaerobic and aerobic integrated treatment process adopting a conventional anaerobic and biological rotating disc, the patent number CN 206232483U discloses an anaerobic and aerobic integrated membrane bioreactor, and the patent number CN 106927567A discloses an anaerobic and aerobic integrated bioreactor, and in general, the anaerobic part of the disclosed anaerobic and aerobic integrated treatment device is difficult to adopt an anaerobic process taking anaerobic granular sludge as a core, and basically takes a flocculent anaerobic process as a main part, so the anaerobic form has the defects that anaerobic flocculent sludge is easy to run off along with effluent in the anaerobic reactor and enters an upper aerobic part, the anaerobic treatment efficiency is low, and the load of the aerobic treatment part is increased; if the aerobic treatment part positioned at the upper part of the integrated treatment device adopts the conventional activated sludge process (MBR-containing process), the yield of aerobic sludge is large, and the problem of subsequent sludge treatment is increased.
For a small scale integrated sewage treatment device, the following matters are the main problems to be concerned in the design: (1) ensuring the effectiveness of the sewage treatment plant: the treated wastewater can meet the standard requirements of sewage treatment and discharge; (2) energy conservation of the sewage treatment device: an energy-saving sewage treatment process is adopted as far as possible; (3) easy operability of the sewage treatment device: since most small scale wastewater generation sites do not have specialized skills and operators, processes and equipment that are as easy to operate as possible are needed; (4) the sludge production amount is less: the treatment and disposal of sludge are common problems faced by domestic sewage treatment plants at present, and the modes of landfill, aerobic composting, anaerobic biogas production, incineration and the like are not optimal treatment schemes. Therefore, based on the problems, the membrane type anaerobic and MBBR membrane type aerobic integrated sewage treatment device is significant.
SUMMERY OF THE UTILITY MODEL
The utility model provides a membrane anaerobic and MBBR membrane aerobic integrated sewage treatment device, which solves the problems.
In order to solve the technical problem, the utility model discloses a realize through following technical scheme:
the utility model discloses a membrane anaerobic and MBBR membrane aerobic integrated sewage treatment device, which comprises an anaerobic tank shell arranged at the lower part, an aerobic tank shell arranged at the upper part of the anaerobic tank shell and communicated with the bottom of the anaerobic tank shell, a die carrier which is arranged at the bottom in the anaerobic tank shell and is obliquely provided with an anaerobic compound membrane fixed biological filler module, and a plurality of three-phase separators which are transversely arranged at the top in the anaerobic tank shell in parallel and are positioned above the die carrier;
an aerobic residual sludge storage hopper is vertically arranged on one side in the aerobic tank shell through a partition plate; a biogas collecting and storing closed chamber is vertically arranged at the other side in the aerobic tank shell through a partition plate; an aerobic tank with suspended fillers is arranged between the aerobic excess sludge storage hopper and the biogas collection and storage closed chamber in the aerobic tank shell; an aeration structure is arranged in the aerobic tank; the aerobic excess sludge storage hopper is positioned at the upper side part of the partition plate of the aerobic tank and is provided with an aerobic tank water outlet screen, and the aerobic tank water outlet screen is connected with a sludge-water mixed liquid downflow pipe of the aerobic tank to the lower part of the aerobic excess sludge storage hopper;
the top in the anaerobic tank shell is transversely provided with a biogas collecting pipe connected with a biogas collecting tank at the top of each three-phase separator, and the end part of the biogas collecting pipe penetrates through the side wall of the anaerobic tank shell and then is communicated with a biogas collecting and storing closed chamber through a biogas collecting closed connecting pipe; a sewage inlet pipe with openings uniformly distributed on the surface is transversely arranged below the die set in the anaerobic tank shell, a mud-water circulation return pipe is transversely arranged above the die set in the anaerobic tank shell, the mud-water circulation return pipe is connected with the lower side part of the aerobic residual sludge storage hopper through an externally connected anaerobic tank discharge pipeline, and the mud-water circulation return pipe is connected with the sewage inlet pipe through mud-water circulation and the aerobic residual sludge return pipe after being combined and connected with the anaerobic tank discharge pipeline to form a circulating structure; a bottom discharge pipe is arranged at the bottom of the anaerobic tank shell; the upper part of the marsh gas collecting and storing sealed chamber is externally connected with a marsh gas discharge pipe; and a rear water outlet pipe is connected to the side wall between the aerobic residual sludge storage hopper and the inner top wall of the aerobic tank shell.
Furthermore, a mud-water separation inclined pipe sedimentation module is arranged above the interior of the aerobic excess sludge storage hopper.
Furthermore, the aeration structure is including setting up in the aerobic tank and one end stretches out the air hose of aerobic tank, a plurality of aeration dishes are installed to the equipartition on the lateral conduit that the air hose is located the aerobic tank.
Furthermore, the aerobic tank and the anaerobic tank shell are communicated through a plurality of communicating pipes which are transversely arranged at equal intervals, and the communicating pipes and the biogas collecting tanks at the tops of the three-phase separators are arranged in a staggered mode.
Furthermore, the three-phase separator comprises a biogas collecting tank at the top, obliquely downward-flowing mud-water separation and degassing channels at two sides, and a triangular biogas baffle plate at the bottom for blocking ascending biogas from entering a sludge settling area.
Furthermore, the anaerobic compound membrane fixed biological filler module adopts a BioFM flat plate type non-woven fabric material anaerobic biological filler.
Furthermore, a reflux pump and a first pipe valve are arranged on the mud-water circulation and aerobic residual sludge reflux pipe; a second pipe valve is arranged on the discharge pipeline of the anaerobic tank; and a third pipe valve is arranged on the muddy water circulating return pipe and positioned outside the anaerobic tank shell.
Further, a methane discharge pressure control discharge valve is arranged on the methane discharge pipe; and a fourth pipe valve is arranged on the bottom discharge pipe.
Compared with the prior art, the utility model following beneficial effect including:
1. the utility model discloses fixed biofilm carrier of compound membrane of well inclined installation, anaerobic sludge concentration in the anaerobism pond has been greatly increased on the one hand, the treatment effeciency of anaerobism pond has been improved, simultaneously can effectively avoid marsh gas to carry anaerobic sludge and rise, cause the anaerobic sludge loss problem that anaerobism three-phase separator separation effect is not good and leads to, effectively pass through the free anaerobic sludge and block, adsorb with the filler biomembrane, along the process that the inclined installation filler biomembrane subsides, effectively keep anaerobic sludge in the anaerobism pond, reduce the separation load of anaerobism pond upper portion three-phase separator simultaneously, improve marsh gas, the separation effect of mud and the sewage mixed liquid after the processing, improve the quality of the intake water that gets into integrated device upper portion MBBR aerobic treatment system, thereby improve the stability and the high efficiency of whole processing system;
2. the utility model discloses a MBBR biomembrane method is as integrated device aerobic treatment's technology, the sludge production volume of the conventional activated sludge process technology that significantly reduces on the one hand, and on the other hand, MBBR technology has than other aerobic treatment processes, like biological rotating disk, AO, A2O, SBR, MBR and the like, and has great flexibility. One of the advantages of the MBBR technology is that the treatment capacity of the system can be flexibly increased by adjusting the filling ratio of the suspended filler, which is not comparable to other aerobic technologies, and is very important for small-scale sewage treatment projects with large water quality and water quantity changes.
3. The utility model discloses an integrated anaerobic aerobic treatment device which takes fixed anaerobic microorganism and fixed aerobic microorganism as main parts, in the operation process, free anaerobic flocculent sludge and aerobic flocculent sludge in the integrated device can be gradually reduced, a stable biomembrane method integrated anaerobic aerobic treatment system which consists of the fixed anaerobic microorganism and the fixed aerobic microorganism is gradually formed, the operation stability of the whole system is ensured, and better effluent water quality is provided;
4. the utility model discloses a good oxygen integration sewage treatment plant of diaphragm type anaerobism and MBBR diaphragm type has designed good oxygen excess sludge and has flowed back to the function that the bottom anaerobism pond carried out anaerobic digestion, can further stabilize and subtract good oxygen excess sludge, can further reduce 50% excess sludge volume. The finally discharged residual anaerobic sludge is dehydrated under the condition of no addition of medicament, and can be directly used as an organic fertilizer after being further stabilized, so that the problems of treatment and disposal of aerobic residual sludge are solved.
Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of a membrane anaerobic and MBBR membrane aerobic integrated sewage treatment plant of the present invention;
FIG. 2 is a plan view from the middle of the aerobic tank shell in FIG. 1;
FIG. 3 is a structural relationship diagram of biogas collection and transportation in FIG. 1;
FIG. 4 is a diagram showing the relationship between the mold frame and the anaerobic biofilm fixed biofilm carrier module in FIG. 1;
FIG. 5 is a schematic view of the structure of FIG. 4;
FIG. 6 is a schematic diagram of the anaerobic biofilm immobilization biological filler module;
in the drawings, the components represented by the respective reference numerals are listed below:
1-an anaerobic tank shell, 2-a sewage inlet pipe, 3-a first pipe valve, 4-a mud-water circulation and aerobic residual sludge return pipe, 401-a mud-water circulation return pipe, 5-a third pipe valve, 6-a reflux pump, 7-a triangular methane baffle, 8-a second pipe valve, 9-an anaerobic treatment effluent flow direction after separating methane and sludge in an integrated device through a three-phase separator, 10-a methane flow direction in an anaerobic tank three-phase separator, 11-a methane collecting tank, 12-an anaerobic tank discharge pipeline, 13-an aerobic residual sludge storage hopper, 14-an aerobic tank mud-water mixed liquid downpipe, 15-a mud-water separation inclined pipe sedimentation module, 16-an aerobic tank effluent screen, 17-a rear water outlet pipe, 18-a methane discharge pipe, and 19-a methane discharge pressure control discharge valve, 20-an air pipe of an aerobic tank, 21-the liquid level of an MBBR membrane type aerobic tank, 22-the liquid level in a biogas collection and storage closed chamber of an anaerobic tank, 23-an aerobic tank shell, 24-a biogas collection and storage closed chamber, 25-a suspended filler, 26-an aeration disc, 27-a biogas collection and closed connecting pipe, 28-a communicating pipe, 29-a biogas collecting pipe, 30-a three-phase separator, 31-a die carrier, 311-an anaerobic compound membrane fixed biological filler module, 32-a bottom discharge pipe and 321-a fourth pipe valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "lower portion", "upper portion", "bottom portion", "inner top portion", "side by side", "top portion", and the like, indicate positional or positional relationships for convenience of description, and simplicity of description, but do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Referring to fig. 1-6, the membrane anaerobic and MBBR membrane aerobic integrated sewage treatment plant of the present invention comprises an anaerobic tank shell 1 disposed at the lower part, an aerobic tank shell 23 disposed at the upper part of the anaerobic tank shell 1 and communicated with the bottom of the anaerobic tank shell 1, a mold frame 31 disposed at the bottom in the anaerobic tank shell 1 and provided with an anaerobic composite membrane fixed biological filler module 311 in an inclined manner, and a plurality of three-phase separators 30 transversely mounted in parallel at the top in the anaerobic tank shell 1 and located above the mold frame 31;
an aerobic residual sludge storage hopper 13 is vertically arranged on one side in the aerobic tank shell 23 through a partition plate; a biogas collecting and storing closed chamber 24 is vertically arranged at the other side in the aerobic tank shell 23 through a partition plate; an aerobic tank with suspended fillers 25 is arranged in the aerobic tank shell 23 and between the aerobic excess sludge storage hopper 13 and the biogas collection and storage closed chamber 24; an aeration structure is arranged in the aerobic tank; an aerobic tank water outlet screen 16 is arranged on the upper side part of the partition plate of the aerobic tank of the aerobic residual sludge storage hopper 13, and a sludge-water mixed liquor down-flow pipe 14 of the aerobic tank is connected to the aerobic tank water outlet screen 16 to the lower part of the aerobic residual sludge storage hopper 13;
a biogas collecting pipe 29 connected with a biogas collecting tank 11 at the top of each three-phase separator 30 is transversely arranged at the top in the anaerobic tank shell 1, and the end part of the biogas collecting pipe 29 passes through the side wall of the anaerobic tank shell 1 and then is communicated with a biogas collecting, storing and sealing chamber 24 through a biogas collecting and sealing connecting pipe 27; a sewage inlet pipe 2 with open pores uniformly distributed on the surface is transversely arranged in the anaerobic tank shell 1 below the die carrier 31, a muddy water circulating return pipe 401 is transversely arranged in the anaerobic tank shell 1 above the die carrier 31, the muddy water circulating return pipe 401 is connected with the lower side part of the aerobic residual sludge storage hopper 13 through an external anaerobic tank discharge pipeline 12, and the muddy water circulating return pipe 401 is connected with the sewage inlet pipe 2 through muddy water circulation and an aerobic residual sludge return pipe 4 after being combined and connected with the anaerobic tank discharge pipeline 12 to form a circulating structure; the bottom of the anaerobic tank shell 1 is provided with a bottom discharge pipe 32; the upper part of the marsh gas collecting and storing sealed chamber 24 is externally connected with a marsh gas discharge pipe 18; a rear water outlet pipe 17 is connected to the side wall between the aerobic residual sludge storage hopper 13 and the inner top wall of the aerobic tank shell 23.
The flow direction of the effluent after anaerobic treatment in the integrated device after the separation of the biogas and the sludge by the three-phase separator is 9: the biogas, anaerobic sludge and waste water mixed liquor in the anaerobic reaction tank rise to the area of the three-phase separator, the biogas enters a biogas collecting tank 11 at the upper part of the three-phase separator, the anaerobic sludge and the waste water flow along a downward inclined channel of the three-phase separator, the purposes of removing the biogas in the sludge-water mixed liquor and promoting the anaerobic sludge to be degassed and deposited are achieved, the waste water after the anaerobic sludge is separated upwards passes through a communicating pipe 28 which is arranged at one side of the top of an anaerobic tank and is positioned on a partition plate of the aerobic tank and the anaerobic tank and enters an MBBR membrane type aerobic treatment tank at the upper part for further advanced treatment.
The anaerobic tank shell 1: the integrated device anaerobic tank shell is positioned at the lower part of the anaerobic-aerobic integrated sewage treatment device, the shape of the integrated device anaerobic tank shell can be a cuboid or a cylinder, and the integrated device anaerobic tank shell can be made of a steel structure tank body or a concrete structure.
Sewage inlet pipe 2: pumping sewage to be treated into a perforated water distribution pipe at the bottom of the mode anaerobic reactor from a sewage inlet pipe, and uniformly distributing the wastewater to be treated on the surface of the bottom of the anaerobic tank;
first pipe valve 3: the manual switch flow valve is arranged on a mud-water circulating backflow pipe at the lower part of the three-phase separator, and controls the backflow flow of the mud-water mixed liquid through the valve switch or the opening degree;
a mud-water circulation and aerobic excess sludge return pipe 4: and a pipeline for circulating the sludge-water mixed liquid at the lower part of the three-phase separator 30 to the water distribution pipe 2 of the anaerobic reactor and irregularly returning the excess sludge in the aerobic excess sludge bucket 13 to the water distribution pipe of the anaerobic reactor.
Third pipe valve 5: and the pipeline is used for circulating the sludge-water mixed liquid at the lower part of the three-phase separator.
The reflux pump 6: one of the purposes of arranging the circulating reflux pump is to carry out reflux circulation on the sludge-water mixed liquid at the lower part of the three-phase separator in the anaerobic tank and mix the sludge-water mixed liquid with the sewage from the water inlet pipe 2, on one hand, the sludge-water mixed liquid is used for better utilizing the alkalinity generated in the anaerobic process so as to reduce the medicine consumption of inlet water pH adjustment, on the other hand, the sludge-water mixed liquid is used for ensuring the mixing strength and the ascending flow velocity of the sludge-water in the anaerobic reactor so as to ensure the effective mass transfer and contact of the anaerobic sludge and organic pollutants in the sewage, and the. The second purpose of arranging the sludge circulating pump is to discharge aerobic residual membrane sludge generated by an MBBR membrane type aerobic tank on the upper part of the anaerobic and aerobic integrated device from an aerobic residual sludge storage hopper 13 into an anaerobic tank on the lower part of the integrated device for sludge anaerobic digestion, thereby achieving the purpose of increasing gas production and reducing sludge, and reducing the amount of conventional aerobic residual sludge by more than 50 percent.
A triangular biogas baffle 7: the three-phase separator is used for preventing rising biogas from entering a sludge settling zone of the three-phase separator to influence the settling of degassed anaerobic sludge, and the degassed anaerobic sludge falls back to the anaerobic reactor along inclined plates on two sides of the triangular baffle;
second pipe valve 8: the biological membrane (excess sludge) dropped off from the MBBR membrane type aerobic tank is settled in an aerobic excess sludge storage hopper 13, the aerobic excess sludge of the integrated device is irregularly opened to discharge a manual valve 7 to a lower anaerobic tank, a manual valve 5 of a sludge water circulation backflow pipe at the upper part of the integrated device anaerobic tank is closed, and the sludge water circulation at the upper part of the integrated device anaerobic tank and an aerobic excess sludge backflow pump 6 are started to pump the excess sludge in the sludge hopper 13 into the bottom of the anaerobic reactor;
a methane collecting tank 11: a biogas collecting tank at the top of the three-phase separator 30 for collecting biogas generated in the anaerobic tank;
anaerobic tank discharge line 12: the MBBR membrane type aerobic treatment tank at the upper part of the integrated sewage treatment device can generate an aerobic biomembrane and partial free flocculent zoogloea excess sludge which fall off from MBBR suspended filler in the process of biologically treating sewage, the novel integrated device does not drain the excess sludge after dehydrating like other treatment devices, but drains the excess sludge through a pipeline 12 arranged on a bottom anaerobic tank, opens an upper sludge water circulation and an aerobic excess sludge return pipe 4 of the integrated device anaerobic tank after closing a manual valve 5 of the upper sludge water circulation return pipe of the integrated device anaerobic tank, irregularly drains the aerobic excess sludge generated by the MBBR membrane type tank at the upper part of the integrated sewage treatment device into a western anaerobic tank, carries out anaerobic digestion treatment on the aerobic excess sludge, and can reduce the amount by more than 50%;
an aerobic excess sludge storage hopper 13: used for storing aerobic excess sludge (falling biological membrane sludge and partial free flocculent excess sludge) generated by an MBBR membrane type aerobic pool at the upper part of the novel integrated sewage treatment device;
sludge-water separation pipe chute deposits module 15: the device is used for separating the sludge and the water of the effluent after aerobic treatment from the aerobic residual sludge, the sludge-water mixed liquor from the MBBR membrane type aerobic tank flows upwards along the inclined pipe from the lower part of the inclined pipe sedimentation module, the aerobic residual sludge is separated from the treated sewage, the sludge sinks downwards along the wall of the inclined pipe to the aerobic sludge storage hopper 13, and the treated sewage rises along the inclined pipe and is discharged from the water outlet pipe 17 after being treated by the anaerobic and MBBR membrane type aerobic integrated device at the upper part of the sedimentation tank;
an aerobic tank water outlet screen 16: the device is used for isolating the suspended filler in the MBBR membrane type aerobic tank and preventing the suspended filler from entering a subsequent mud-water separation sedimentation tank;
a rear water outlet pipe 17 is positioned at the upper part of the inclined pipe sedimentation tank and is used for discharging sewage after the mode anaerobic treatment and the MBBR film aerobic treatment;
the methane discharge pipe 18: after being collected by the anaerobic tank methane collection and storage airtight chamber 24, the methane generated by the anaerobic tank at the lower part of the anaerobic and aerobic integrated device is discharged out of the integrated processing device along a methane discharge pipe under the control of a methane discharge pressure control discharge valve 19 generated by an external anaerobic tank and is correspondingly processed or utilized;
biogas discharge pressure control discharge valve 19: the pressure control valve is used for controlling the biogas pressure in the anaerobic pool biogas collection and storage closed chamber 24, when the biogas pressure exceeds 250mm water column, the discharge valve is automatically opened, the biogas is conveyed to a subsequent biogas treatment or utilization facility, and when the biogas pressure is lower than 150mm water column, the pressure control valve is automatically closed;
the aerobic tank shell 23: the outer shell of the MBBR membrane type aerobic pool at the upper part of the integrated device is of a carbon steel anticorrosion or concrete structure in a conventional way;
the biogas collection and storage closed chamber 24: the device is used for collecting the biogas collected by the biogas collecting tanks 11 at the tops of the three-phase separation devices, storing the biogas, and changing the biogas pressure in the closed room from 100-250 mm water columns under the normal operation condition;
suspension filler 25: the common suspended filler with the diameter not more than 3cm can be adopted for the attachment and growth of aerobic microorganisms;
the aeration disk 26: used for delivering oxygen required by aerobic microorganisms to the MBBR aeration tank;
the biogas collection airtight connection pipe 27: the biogas collecting and storing closed chamber 24 is used for conveying biogas collected by each biogas collecting tank at the top of the three-phase separator in the anaerobic tank from a biogas collecting pipe 29 of the three-phase separator in the anaerobic tank outside the integrated device to the anaerobic tank;
the communication pipe 28: after the wastewater after anaerobic treatment is separated by the three-phase separator, biogas is collected by a biogas collecting tank 11 at the top of the anaerobic tank, sludge falls back to the anaerobic tank along a downward flow channel of the three-phase separator and an inclined plane on a biogas baffle 7 of the anaerobic tank of the integrated device, and the treated wastewater enters an MBBR membrane type aerobic tank at the upper part of the integrated device along the communicating pipe for aerobic further treatment;
the methane collecting pipe 29 is arranged outside the integrated device and is used for collecting methane collected by each methane collecting tank of the three-phase separator;
the flowing direction of the biogas in the three-phase separator of the anaerobic tank is 10: under the action of each baffle of the anaerobic tank three-phase separator, the biogas generated by the anaerobic tank flows upwards and is collected in a biogas collecting tank 11 at the top of the anaerobic three-phase separator.
MBBR membrane aerobic tank liquid level 21: the water level in the MBBR membrane type aerobic tank is high;
the biogas in the anaerobic pool is collected and stored in a closed room at a liquid level 22: the liquid level in the anaerobic pool biogas collection and storage closed chamber changes along with the difference of biogas pressure in the closed chamber, and the designed normal operation pressure is 250mm water column;
wherein, a mud-water separation inclined tube sedimentation module 15 is arranged above the interior of the aerobic excess sludge storage hopper 13.
Wherein, the aeration structure comprises an air pipe 20 which is arranged in the aerobic tank and one end of which extends out of the aerobic tank, and a plurality of aeration discs 26 are uniformly arranged on a branch pipeline of the air pipe 20 which is positioned in the aerobic tank.
Wherein, the aerobic tank and the anaerobic tank shell 1 are communicated through a plurality of communicating pipes 28 which are transversely arranged at equal intervals, and the communicating pipes 28 and the biogas collecting tanks 11 at the top of the three-phase separator 30 are arranged in a staggered way.
The three-phase separator 30 includes a biogas collecting tank 11 at the top, sludge-water separating and degassing passages at two sides and a triangular biogas baffle 7 at the bottom for blocking the ascending biogas from entering the sludge settling zone.
Bottom drain pipe 32: the effluent treated by the mode anaerobic treatment and MBBR membrane aerobic treatment device is discharged from an overflow water outlet positioned at the upper part of a sedimentation tank of the integrated device;
wherein, the anaerobic compound membrane fixed biological filler module 311 adopts a BioFM flat non-woven fabric material anaerobic biological filler, and the structure is shown in fig. 3-4;
as shown in fig. 6, it is a schematic diagram of the action principle of the anaerobic film-coated immobilized biological filler module 311:
501. biogas generated by dissociating anaerobic sludge;
502. dissociating anaerobic sludge;
503. the methane microbubbles carry the small methane sludge clusters of the free sludge;
504. biogas sludge small balls which rise along the two fixed biomembrane packing inclined channels;
505. biogas generated by anaerobic microorganisms is attached to the fixed biological filler;
506. free anaerobic sludge blocked by the fixed biological filler and separated from the biogas;
507. the biogas sludge small groups and biogas on the biological filler are converged to form large biogas bubbles;
508. the biogas bubbles which are gradually increased in the rising process of the biological filler channel are installed along the inclined way;
509. fixing anaerobic microbial film layers attached to two sides of the biological filler by using a BioFM anaerobic compound film;
510. the BioFM-1816 type anaerobic compound film in the Fusen environment fixes the biological filler;
the main purpose of adopting membrane type anaerobic is to avoid the problem that anaerobic sludge is easy to lose and causes low treatment efficiency of an anaerobic reactor in the conventional flocculent anaerobic sludge process, and simultaneously avoid increasing the load of aerobic treatment when the lost anaerobic sludge flows into an aerobic treatment tank at the upper part of the integrated device along with ascending water flow. More importantly, the novel membrane type anaerobic process runs for a certain period of time, flocculent anaerobic sludge free in the anaerobic tank is discharged periodically to form an anaerobic reactor which takes anaerobic microorganisms on anaerobic fixed biological fillers as main materials, so that the problem of anaerobic sludge loss in the conventional flocculent anaerobic process can be effectively avoided, and the running stability of an MBBR membrane type aerobic system on the upper part of the integrated device is ensured;
compared with other anaerobic technologies, the obliquely installed fixed biological filler has the great advantage of effectively reducing the loss problem of anaerobic sludge, the principle diagram of the obliquely installed fixed biological filler film type anaerobic sludge loss prevention is shown in fig. 5, biogas generated by partial free anaerobic sludge in the anaerobic tank can carry the anaerobic sludge to move upwards and can form biogas sludge small clusters 503 with free sludge by biogas micro bubbles in the process of flowing upwards, due to the blocking effect of the obliquely installed fixed biological filler, the biogas sludge small clusters 503 can be combined with biogas 505 generated by anaerobic microorganisms attached to the fixed biological filler and can gradually form large biogas bubbles 507 in the process of moving upwards along a channel between two adjacent fillers in an inclined manner, and meanwhile, most of the free anaerobic sludge is adsorbed by biological films attached to and grown on two sides of the fixed biological filler, when a large-shape biomembrane is formed (when the thickness of the biomembrane layer is large), part of the biomembrane falls off from the fixed filler and falls into the anaerobic reaction tank along the inclined filler biomembrane channel, so that the problem of anaerobic sludge loss caused by other integrated devices is effectively avoided.
Wherein, a reflux pump 6 and a first pipe valve 3 are arranged on the mud-water circulation and aerobic residual sludge reflux pipe 4; a second pipe valve 8 is arranged on the anaerobic tank discharge pipeline 12; a third pipe valve 5 is arranged on the mud water circulation return pipe 401 and positioned at the outer side part of the anaerobic tank shell 1.
Wherein, a methane discharge pressure control discharge valve 19 is arranged on the methane discharge pipe 18; a fourth pipe valve 321 is mounted on the bottom drain pipe 32.
Has the advantages that:
1. the utility model relates to a membrane anaerobic and MBBR membrane aerobic integrated sewage treatment device, which fully exerts the advantages of membrane anaerobic and MBBR aerobic biomembrane methods, greatly reduces the sludge production of an integrated device, improves the stability and simplicity of the operation of the integrated device, and saves the land occupation and investment of the integrated device;
2. the membrane type anaerobic sludge treatment device replaces the conventional flocculent sludge anaerobic process, thereby effectively avoiding the problem that the anaerobic sludge is easy to lose in the flocculent sludge anaerobic process;
3. the utility model discloses fixed biofilm carrier of compound membrane of well inclined installation, anaerobic sludge concentration in the anaerobism pond has been greatly increased on the one hand, the treatment effeciency of anaerobism pond has been improved, simultaneously can effectively avoid marsh gas to carry anaerobic sludge and rise, cause the anaerobic sludge loss problem that anaerobism three-phase separator separation effect is not good and leads to, effectively pass through the free anaerobic sludge and block, adsorb with the filler biomembrane, along the process that the inclined installation filler biomembrane subsides, effectively keep anaerobic sludge in the anaerobism pond, reduce the separation load of anaerobism pond upper portion three-phase separator simultaneously, improve marsh gas, the separation effect of mud and the sewage mixed liquid after the processing, improve the quality of the intake water that gets into integrated device upper portion MBBR aerobic treatment system, thereby improve the stability and the high efficiency of whole processing system;
4. the utility model adopts the MBBR biomembrane method as the aerobic treatment process of the integrated device, on one hand, the sludge production of the conventional activated sludge process is greatly reduced,on the other hand, MBBR has a higher activity than other aerobic processes, such as rotating biological disk, AO, A2O, SBR, MBR and the like, and has great flexibility. One of the advantages of the MBBR technology is that the treatment capacity of the system can be flexibly increased by adjusting the filling ratio of the suspended filler, which is not comparable to other aerobic technologies, and is very important for small-scale sewage treatment projects with large water quality and water quantity changes.
5. The utility model discloses an integrated anaerobic aerobic treatment device which takes fixed anaerobic microorganism and fixed aerobic microorganism as main parts, in the operation process, free anaerobic flocculent sludge and aerobic flocculent sludge in the integrated device can be gradually reduced, a stable biomembrane method integrated anaerobic aerobic treatment system which consists of the fixed anaerobic microorganism and the fixed aerobic microorganism is gradually formed, the operation stability of the whole system is ensured, and better effluent water quality is provided;
6. the utility model discloses a good oxygen integration sewage treatment plant of diaphragm type anaerobism and MBBR diaphragm type has designed good oxygen excess sludge and has flowed back to the function that the bottom anaerobism pond carried out anaerobic digestion, can further stabilize and subtract good oxygen excess sludge, can further reduce 50% excess sludge volume. The finally discharged residual anaerobic sludge is dehydrated under the condition of no addition of medicament, and can be directly used as an organic fertilizer after being further stabilized, so that the problems of treatment and disposal of aerobic residual sludge are solved.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. The utility model provides an aerobic integration sewage treatment plant of membrane formula anaerobism and MBBR diaphragm type, a serial communication port, including setting up in anaerobism pond casing (1) of lower part, set up in anaerobism pond casing (1) upper portion and aerobic pond casing (23) that are linked together bottom anaerobism pond casing (1), set up die carrier (31) of the fixed biofilm carrier module (311) of anaerobism is installed to the inclined of bottom in anaerobism pond casing (1), transversely install in anaerobism pond casing (1) interior top and be located a plurality of three-phase separator (30) of die carrier (31) top side by side, its characterized in that:
an aerobic residual sludge storage hopper (13) is vertically arranged on one side in the aerobic tank shell (23) through a partition plate; a biogas collecting and storing closed chamber (24) is vertically arranged at the other side in the aerobic tank shell (23) through a partition plate; an aerobic tank with a suspended filler (25) is arranged in the aerobic tank shell (23) and between the aerobic excess sludge storage hopper (13) and the biogas collection and storage closed chamber (24); an aeration structure is arranged in the aerobic tank; an aerobic tank water outlet screen (16) is arranged on the upper side part of the partition plate of the aerobic tank of the aerobic residual sludge storage hopper (13), and the aerobic tank water outlet screen (16) is connected with an aerobic tank mud-water mixed liquid downpipe (14) to the lower part of the aerobic residual sludge storage hopper (13);
a biogas collecting pipe (29) connected with a biogas collecting tank (11) at the top of each three-phase separator (30) is transversely arranged at the top in the anaerobic tank shell (1), and the end part of the biogas collecting pipe (29) penetrates through the side wall of the anaerobic tank shell (1) and is communicated with a biogas collecting, storing and sealing chamber (24) through a biogas collecting and sealing connecting pipe (27); a sewage inlet pipe (2) with open pores uniformly distributed on the surface is transversely arranged below the die set (31) in the anaerobic tank shell (1), a muddy water circulating return pipe (401) is transversely arranged above the die set (31) in the anaerobic tank shell (1), the muddy water circulating return pipe (401) is connected with the lower side part of the aerobic residual sludge storage hopper (13) through an external anaerobic tank discharge pipeline (12), and the muddy water circulating return pipe (401) is connected with the anaerobic tank discharge pipeline (12) in a combined manner and then is connected with the sewage inlet pipe (2) through muddy water circulation and an aerobic residual sludge return pipe (4) to form a circulating structure; a bottom discharge pipe (32) is arranged at the bottom of the anaerobic tank shell (1); the upper part of the marsh gas collecting and storing closed chamber (24) is externally connected with a marsh gas discharge pipe (18); a rear water outlet pipe (17) is connected to the side wall between the aerobic residual sludge storage hopper (13) and the inner top wall of the aerobic tank shell (23).
2. The integrated membrane anaerobic and MBBR membrane aerobic sewage treatment plant according to claim 1, wherein a sludge-water separation inclined tube sedimentation module (15) is arranged above the inside of the aerobic excess sludge storage hopper (13).
3. The integrated membrane anaerobic and MBBR membrane aerobic sewage treatment plant according to claim 1, wherein the aeration structure comprises an air pipe (20) which is arranged in the aerobic tank and one end of which extends out of the aerobic tank, and a plurality of aeration discs (26) are uniformly arranged on the branch pipeline of the air pipe (20) in the aerobic tank.
4. The membrane type anaerobic and MBBR membrane type aerobic integrated sewage treatment device according to claim 1, wherein the aerobic tank is communicated with the anaerobic tank shell (1) through a plurality of communicating pipes (28) which are transversely arranged at equal intervals, and the communicating pipes (28) are arranged in a staggered way with the biogas collecting tanks (11) at the top of the three-phase separator (30).
5. The integrated membrane anaerobic and MBBR membrane aerobic sewage treatment plant according to claim 1, wherein the three-phase separator (30) comprises a methane collection tank (11) at the top, sludge-water separation and degassing channels at the two sides and a triangular methane baffle (7) at the bottom for blocking the sludge settling zone into which the rising methane enters.
6. The membrane type anaerobic and MBBR membrane type aerobic integrated sewage treatment device according to claim 1, wherein the anaerobic composite membrane fixed biological filler module (311) adopts a BioFM flat plate type non-woven fabric material anaerobic biological filler.
7. The membrane anaerobic and MBBR membrane aerobic integrated sewage treatment plant according to claim 1, wherein a reflux pump (6) and a first pipe valve (3) are installed on the sludge water circulating and aerobic excess sludge reflux pipe (4); a second pipe valve (8) is arranged on the anaerobic tank discharge pipeline (12); and a third pipe valve (5) is arranged at the position of the outer side part of the anaerobic tank shell (1) on the muddy water circulating and returning pipe (401).
8. The integrated membrane anaerobic and MBBR membrane aerobic sewage treatment plant according to claim 1, wherein a methane discharge pressure control discharge valve (19) is installed on the methane discharge pipe (18); a fourth pipe valve (321) is arranged on the bottom discharge pipe (32).
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| CN112320950A (en) * | 2020-11-09 | 2021-02-05 | 上海复森环境科技发展有限公司 | A membrane anaerobic and MBBR membrane aerobic integrated sewage treatment device |
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