CN111675435A - Integrated sewage treatment equipment based on A/O-MBBR (anaerobic-anoxic-aerobic-moving bed biofilm reactor) process and sewage treatment method - Google Patents
Integrated sewage treatment equipment based on A/O-MBBR (anaerobic-anoxic-aerobic-moving bed biofilm reactor) process and sewage treatment method Download PDFInfo
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- 239000010865 sewage Substances 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000000945 filler Substances 0.000 claims abstract description 76
- 238000004062 sedimentation Methods 0.000 claims abstract description 30
- 238000005352 clarification Methods 0.000 claims abstract description 29
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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 claims abstract 2
- 239000010802 sludge Substances 0.000 claims description 34
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
-
- 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
- C02F1/5281—Installations for water purification using chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- 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
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/043—Treatment of partial or bypass streams
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- 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
- C02F3/30—Aerobic and anaerobic processes
-
- 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
Abstract
The invention discloses an integrated sewage treatment device and a sewage treatment method based on an A/O-MBBR (anaerobic-anoxic-aerobic-biological reactor) process, which comprises a clarification tank, an anoxic tank, a primary aerobic tank, a secondary aerobic tank and a sedimentation tank which are sequentially connected through an overflow structure; the bottom of the sedimentation tank is provided with a power structure, the power structure is connected with the clarification tank through a return pipe, the return pipe is provided with a dephosphorization agent access port and a pipeline mixer, and the pipeline mixer is positioned at the downstream of the dephosphorization agent access port; the anoxic filler in the anoxic tank is a combined filler and is formed by wrapping polyurethane filler by a plastic spherical shell, and a carbon source medicament access port is arranged in a water inlet baffle plate of the anoxic tank; the aerobic fillers in the two aerobic tanks are respectively a high-density polyethylene MBBR filler and a PPC biological carrier; all parts are integrally installed in a shell, and the shell is made of glass fiber reinforced plastic. The sewage treatment equipment and the sewage treatment method adopt an A/O-MBBR pure biofilm process, have strong impact resistance, are matched with a chemical phosphorus removal and carbon source adding device, and can effectively enhance the removal of nitrogen and phosphorus pollutants.
Description
Technical Field
The invention relates to the field of domestic sewage treatment, in particular to an integrated sewage treatment device and a sewage treatment method based on an A/O-MBBR (anaerobic-anoxic-aerobic-biofilm reactor) process.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
The problem of environmental pollution caused by direct discharge or overproof discharge of rural domestic sewage is an important problem influencing the living environment and ecological environment of rural areas in China. The rural domestic sewage treatment modes mainly comprise two modes: a nano-tube centralized sewage treatment mode and a distributed sewage treatment mode. The distributed sewage treatment mode mostly adopts integrated sewage treatment equipment. From the aspect of treatment scale, the integrated sewage treatment equipment can be divided into small-sized sewage treatment equipment for single family or multi-family use, medium-sized sewage treatment equipment in a sheet area or village group scale and large-sized sewage treatment equipment in a village scale. From the technical route, medium and small-sized sewage treatment equipment mainly adopts a biomembrane process, and large-sized sewage treatment equipment mainly adopts a suspended activated sludge process.
According to project implementation experience and research data, the integrated sewage treatment equipment has poor effect of removing total nitrogen due to unbalanced influent carbon-nitrogen ratio, high dissolved oxygen in an anoxic zone and the like; because the control of reaction conditions is difficult, the operation and maintenance difficulty is high due to the need of periodic sludge discharge, the cost is too high and the like, the integrated sewage treatment equipment is usually not suitable for removing total phosphorus by adopting a biological phosphorus removal method. At present, in order to meet the pollutant discharge standard of rural domestic sewage treatment facilities promulgated from various regions, research hotspots in the field of integrated sewage treatment equipment are focused on removing TN and TP and more advanced sewage treatment technology application.
A Moving Bed Biofilm Reactor (MBBR) is a biological fluidized bed technology based on suspended fillers, and mainly utilizes microbial flora attached to the surface of flowing solid fillers to form a biofilm, so as to perform sewage treatment, and is a process type between an activated sludge method and a fixed biofilm method. In recent years, the MBBR technology is widely applied due to the advantages of small volume, no sludge expansion, large specific surface area, low investment and operation cost and the like.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention aims to provide an integrated sewage treatment device and a sewage treatment method based on an A/O-MBBR process.
In order to achieve the above object, one or more embodiments of the present invention disclose the following technical solutions:
in a first aspect, the invention provides integrated sewage treatment equipment based on an A/O-MBBR process, which comprises a clarification tank, an anoxic tank, a primary aerobic tank, a secondary aerobic tank and a sedimentation tank which are sequentially connected through an overflow structure;
the bottom of the sedimentation tank is provided with a power structure, the power structure is connected with the clarification tank through a return pipe, the return pipe is provided with a dephosphorization agent access port and a pipeline mixer, and the pipeline mixer is positioned at the downstream of the dephosphorization agent access port;
the anoxic filler in the anoxic tank is a combined filler and is formed by wrapping polyurethane filler by a plastic spherical shell, and a carbon source medicament access port is arranged in a water inlet baffle plate of the anoxic tank;
the aerobic fillers in the two aerobic tanks are respectively a high-density polyethylene MBBR filler and a PPC biological carrier;
the integrated sewage treatment equipment is also provided with a sludge storage tank and a disinfection tank, all parts are integrally installed in the shell, and the shell is made of glass fiber reinforced plastic materials.
In a second aspect, the invention provides a sewage treatment method based on an A/O-MBBR process, which comprises the following steps:
the sewage and nitrifying liquid returned by the sedimentation tank enter a clarification tank together, the sewage is clarified and filtered by sludge and overflows to an anoxic tank, a carbon source is supplemented into the anoxic tank, denitrification reaction is carried out, and total nitrogen is removed;
overflowing the sewage in the anoxic tank to a primary aerobic tank to degrade most of COD and part of ammonia nitrogen;
the effluent of the primary aerobic tank overflows into a secondary aerobic tank to degrade the residual COD and most of ammonia nitrogen;
the effluent of the secondary aerobic tank enters a sedimentation tank for solid-liquid separation; and (4) refluxing the nitrifying liquid at the bottom of the sedimentation tank into a clarification tank, and adding a phosphorus removal agent in the refluxing process.
Compared with the prior art, one or more technical schemes of the invention have the following beneficial effects:
(1) the sewage treatment equipment and the sewage treatment process adopt an A/O-MBBR pure biofilm process, have strong impact resistance, are matched with a chemical phosphorus removal and carbon source adding device and can effectively enhance the removal of nitrogen and phosphorus pollutants;
(2) the combined functional filler is adopted, the biocompatibility is good, the service life is long, the auxiliary microbial inoculum is used for starting, and the starting period is improved by more than 50% compared with that of conventional equipment;
(3) and an integrated visual design concept is adopted, all vulnerable parts such as a filler, an aerator and a valve can be replaced, and the operation and maintenance are simple and convenient.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
The device comprises a clarification tank 1, a clarification tank 2, a sludge storage tank 3, an anoxic tank, 4, a primary aerobic tank, 5, a secondary aerobic tank, 6, a sedimentation tank, 7, a disinfection tank, 8, a water inlet pipe, 9, an air-stripping sludge discharge device, 10, a carbon source agent inlet, 11, an anoxic filler pressing plate, 12, an anoxic filler supporting plate, 13, an anoxic back-flushing aeration pipe, 14, an anoxic filler, 15, a thin-film pipe type microporous aerator, 16, a sludge suction pipe, 17, a pipeline mixer, 18, a return pipe, 19, an aerobic filler cover plate, 20, a phosphorus removal agent inlet, 21, a primary aerobic tank filler, 22, a secondary aerobic tank filler, 23, a gravity water outlet, 24, a water outlet, 25, an overflow pipe, 26, a reflux pump or an air-stripping reflux device, 27 and a filler blocking net.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In a first aspect, the invention provides integrated sewage treatment equipment based on an A/O-MBBR process, which comprises a clarification tank, an anoxic tank, a primary aerobic tank, a secondary aerobic tank and a sedimentation tank which are sequentially connected through an overflow structure;
the bottom of the sedimentation tank is provided with a power structure, the power structure is connected with the clarification tank through a return pipe, the return pipe is provided with a dephosphorization agent access port and a pipeline mixer, and the pipeline mixer is positioned at the downstream of the dephosphorization agent access port;
the anoxic filler in the anoxic tank is a combined filler and is formed by wrapping polyurethane filler by a plastic spherical shell, and a carbon source medicament access port is arranged in a water inlet baffle plate of the anoxic tank;
the aerobic fillers in the two aerobic tanks are respectively a high-density polyethylene MBBR filler and a PPC biological carrier;
all parts are integrally installed in a shell, and the shell is made of glass fiber reinforced plastic.
The sludge storage tank is arranged in the sewage treatment equipment, and sludge in the clarification tank is periodically discharged into the sludge storage tank for storage, so that the sewage suction period can be effectively prolonged, and the maintenance cost is reduced. The sludge storage tank is positioned between the clarification tank and the anoxic tank, so that the whole sewage treatment process is not influenced, the volume of the sewage treatment equipment can be reduced to a greater extent, and the integration of the sewage treatment equipment is facilitated.
In some embodiments, the wastewater treatment facility further comprises a disinfection tank located downstream of the settling tank, the disinfection tank and the settling tank being connected by an overflow weir. The disinfection tank is arranged, so that sewage can be disinfected, and the quality of the discharged water is further improved.
Further, the disinfection tank is provided with a gravity water outlet and an air lifting water outlet, air lifting drainage is adopted under the condition that gravity drainage cannot be realized, and a rear lifting device does not need to be additionally arranged.
In some embodiments, the motive structure at the bottom of the settling tank is a reflux pump or a stripping device.
In some embodiments, a filler supporting plate, a filler pressing plate and a sludge suction pipe penetrating through the filler supporting plate and the filler pressing plate are arranged in the anoxic tank, the filler pressing plate is positioned above the filler supporting plate, and the anoxic filler is filled between the filler pressing plate and the filler supporting plate. The sludge suction pipe is a UPVC pipe, and when sludge is sucked, the pipe of the sewage suction truck needs to be inserted into the sludge suction pipe to suck sludge at the bottom of the anoxic pond.
Furthermore, a back washing aeration pipe is arranged below the filler supporting plate and is connected with an air source.
Further, the anoxic filler has a diameter of
In some embodiments, the upper parts of the primary aerobic tank and the secondary aerobic tank are provided with filler cover plates to prevent the filler from overflowing, and the filler cover plates are provided with movable plates which can be opened to observe the operation state in the tank body and facilitate the disassembly and maintenance of the aerator.
Further, the bottom of the first-stage aerobic tank and the bottom of the second-stage aerobic tank are provided with aerators.
Further, the aerator is a thin film tube type microporous aerator.
In some embodiments, the overflow ports of the anoxic tank, the primary aerobic tank and the secondary aerobic tank are provided with filler blocking nets. The filler can be effectively prevented from entering other chambers.
In a second aspect, the invention provides a sewage treatment method based on an A/O-MBBR process, which comprises the following steps:
the sewage and nitrifying liquid returned by the sedimentation tank enter a clarification tank together, the sewage is clarified and filtered by sludge and overflows to an anoxic tank, a carbon source is supplemented into the anoxic tank, denitrification reaction is carried out, and total nitrogen is removed;
overflowing the sewage in the anoxic tank to a primary aerobic tank to degrade most of COD and part of ammonia nitrogen;
the effluent of the primary aerobic tank overflows into a secondary aerobic tank to degrade the residual COD and most of ammonia nitrogen;
the effluent of the secondary aerobic tank enters a sedimentation tank for solid-liquid separation; and (4) refluxing the nitrifying liquid at the bottom of the sedimentation tank into a clarification tank, and adding a phosphorus removal agent in the refluxing process.
In some embodiments, the effluent from the sedimentation tank enters a disinfection tank for disinfection, and disinfection is performed by using solid disinfection tablets.
In some embodiments, the phosphorus removal agent is polyaluminum chloride; the carbon source is sodium acetate or glucose.
The treatment scale and material of the integrated sewage treatment equipment cover 5-50 tons/day, and specifically comprise 5, 10, 15, 20, 30, 40 and 50 tons/day; the main parts of the device are made of glass fiber reinforced plastic materials, and the installation form is buried.
The starting method of the integrated sewage treatment equipment is characterized in that the equipment is started in a method of adding microbial inoculum, after the sewage replaces clean water in the equipment, commercially available anaerobic microbial inoculum is added in an anoxic zone, commercially available aerobic microbial inoculum is added in two aerobic zones, normal domestic sewage is introduced after 24-48 hours of stuffy aeration, and the starting period of the equipment is generally 15-30 days.
Hydraulic retention time HRT, the HRT of the anoxic tank is controlled to be 8-12h, the HRT of the primary aerobic tank is controlled to be 5-6h, the HRT of the secondary aerobic tank is controlled to be 3-4h, and the total HRT of the equipment is controlled to be 20-35 h.
The filling rate of the filler is 30 percent and 45 percent respectively compared with the filling rate of the filler of a first-stage aerobic tank and the filling rate of the filler of a second-stage aerobic tank under the conditions of 20 percent, 30 percent and 45 percent respectively on the premise that the filling rate of the filler of the anoxic tank is 60 percent to 70 percent, and the equipment has the effect of removing organic matters, ammonia nitrogen, total nitrogen and the like.
Examples
As shown in the attached drawing, the integrated domestic sewage treatment equipment based on the A/O-MBBR process comprises seven parts, namely a clarification tank 1, a sludge storage tank 2, an anoxic tank 3, a primary aerobic tank 4, a secondary aerobic tank 5, a sedimentation tank 6 and a disinfection tank 7. Clarification tank 1 is arranged mud device 9 and is stored up mud pool 2 intercommunication through the air stripping, clarification tank 1 passes through overflow pipe 25 and oxygen deficiency pond 3 intercommunication, store up the overflow mouth and the 3 intercommunication of oxygen deficiency pond of mud pool 2, the overflow mouth and the 4 intercommunications of one-level good oxygen pond of oxygen deficiency pond 3, the overflow mouth and the 5 intercommunications of second grade good oxygen pond 4 of one-level good oxygen pond, the overflow mouth and the 6 intercommunications of sedimentation tank of second grade good oxygen pond 5, 6 bottoms in sedimentation tank set up backwash pump or air stripping reflux unit 26, link to each other with clarification tank 1 through back flow 18, sedimentation tank 6 is through overflow triangle weir and 7 intercommunications of disinfection pond. The integrated sewage treatment equipment is provided with a water inlet, and the water inlet pipe 8 extends to the bottom of the clarification tank 1. The integrated sewage treatment equipment is provided with two water outlets, namely a gravity water outlet 23 and a gas stripping water outlet 24, and gas stripping drainage is adopted under the condition that gravity drainage cannot be realized without additionally arranging a rear lifting device.
A filler supporting plate 12, a filler pressing plate 11 and a sludge suction pipe 16 penetrating through two clapboards are arranged in the anoxic tank, an anoxic back-flushing aeration pipe 13 is arranged at the lower part of the filler supporting plate 11, and an anoxic filler 14 formed by wrapping polyurethane filler by a plastic spherical shell is filled between the two clapboards. The upper parts of the first-stage aerobic tank 4 and the second-stage aerobic tank 5 are provided with a filler cover plate 19, the cover plates are provided with movable plates, the bottom of the first-stage aerobic tank is provided with a thin film tube type microporous aerator 15, the first-stage aerobic tank is filled with high-density polyethylene MBBR filler 21, and the second-stage aerobic tank is filled with PPC high-efficiency biological carriers 22. And a filler blocking net 27 is respectively arranged above and below the overflow port of the anoxic tank 3, the overflow port of the primary aerobic tank 4 and the overflow port of the secondary aerobic tank 5 and the guide plate to prevent fillers from entering other chambers.
The return pipe 18 is provided with a dephosphorization agent inlet 20 and a pipeline mixer 17, and the pipeline mixer 17 is positioned at the downstream of the dephosphorization agent inlet 20. A carbon source medicament access port 10 is arranged in the water inlet baffle of the anoxic pond 3. The disinfection tank 7 adopts solid disinfection tablets for disinfection.
The working principle is as follows:
the sewage enters the bottom of a clarification tank of the integrated sewage treatment equipment after being lifted, meanwhile, the return nitrification liquid also enters the bottom of the clarification tank, a sludge layer is clarified and filtered together with the inlet water, and the residual sludge in the clarification tank is periodically discharged into a sludge storage tank. Supernatant liquid of the clarification tank overflows into the anoxic tank to mainly carry out denitrification reaction to remove total nitrogen. Then the sewage enters a first-stage aerobic tank and mainly plays a role in degrading COD and carrying out partial nitration reaction. The effluent of the first-stage aerobic tank enters a second-stage aerobic tank and mainly plays a role in degrading residual COD and carrying out most of nitration reaction. And the effluent of the secondary aerobic tank enters a sedimentation tank for solid-liquid separation of the falling biomembrane, a reflux pump or an air stripping sludge discharge device is arranged at the bottom of the sedimentation tank, the nitrified liquid flows back to a clarification tank, and a pipeline mixer and a phosphorus removal agent are arranged on a reflux pipe. The sedimentation tank goes out the water overflow and gets into the disinfection pond, and the disinfection pond adopts solid disinfection tablet to disinfect, and the disinfection function is optional function, sets up the medicament bucket as required, goes out the water discharge up to standard after the disinfection.
The device is supplied with air by an electromagnetic diaphragm blower. The equipment is provided with two gas paths: the device comprises a sludge discharge air path and an aeration air path, wherein the sludge discharge air path is connected with a sludge discharge air inlet of the device through a normally closed electromagnetic valve, and the aeration air path is connected with an aeration air inlet of the device. The sludge discharge gas circuit realizes gas stripping sludge discharge by controlling the opening and closing of the normally closed electromagnetic valve, and periodically discharges the sludge in the clarification tank into the sludge storage tank. The aeration gas circuit comprises a main gas pipe and four branch gas pipes (adopting a reflux pump) or five branch gas pipes (adopting an air stripping reflux device), the four branch gas pipes comprise an anoxic backwashing aeration pipe, a first-stage aerobic tank aeration pipe, a second-stage aerobic tank aeration pipe and an air stripping drainage gas supply pipe, and the four branch gas pipes comprise the anoxic backwashing aeration pipe, the first-stage aerobic tank aeration pipe, the second-stage aerobic tank aeration pipe, an air stripping reflux gas supply pipe and an air stripping drainage gas supply pipe. And each branch gas path of the sludge discharge gas path and the aeration gas path adjusts the air quantity through a scale valve or a ball valve.
The treatment scale and material of the integrated sewage treatment equipment cover 5-50 tons/day, and specifically comprise 5, 10, 15, 20, 30, 40 and 50 tons/day; the main parts of the device are made of glass fiber reinforced plastic materials, and the installation form is buried.
Starting the integrated sewage treatment equipment in a way of adding microbial inoculum, after the sewage replaces clean water in the equipment, adding commercially available anaerobic microbial inoculum in an anoxic zone, adding commercially available aerobic microbial inoculum in two aerobic zones, and after stuffy aeration is carried out for 48 hours, starting to normally feed in domestic sewage, wherein the starting period of the equipment is 15 days.
The hydraulic retention time HRT is controlled to be 12h, the HRT of the first-stage aerobic pool is controlled to be 6h, the HRT of the second-stage aerobic pool is controlled to be 4h, and the total HRT of the equipment is controlled to be 30 h.
The filling rate of the filler of the anoxic tank is 60%, the filling rate of the filler of the first-stage aerobic tank is 45%, the filling rate of the filler of the second-stage aerobic tank is 45%, and the equipment has the effect of removing organic matters, ammonia nitrogen and total nitrogen.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An integrated sewage treatment device based on an A/O-MBBR (anaerobic-moving bed biofilm reactor) process is characterized in that: comprises a clarification tank, an anoxic tank, a primary aerobic tank, a secondary aerobic tank and a sedimentation tank which are connected in sequence through an overflow structure;
the bottom of the sedimentation tank is provided with a power structure, the power structure is connected with the clarification tank through a return pipe, the return pipe is provided with a dephosphorization agent access port and a pipeline mixer, and the pipeline mixer is positioned at the downstream of the dephosphorization agent access port;
the anoxic filler in the anoxic tank is a combined filler and is formed by wrapping polyurethane filler by a plastic spherical shell, and a carbon source medicament access port is arranged in a water inlet baffle plate of the anoxic tank;
the aerobic fillers in the two aerobic tanks are respectively a high-density polyethylene MBBR filler and a PPC biological carrier;
all parts are integrally installed in a shell, and the shell is made of glass fiber reinforced plastic.
2. The integrated sewage treatment apparatus of claim 1, wherein: still including storing up the mud pond, store up the mud pond and be located between depositing reservoir and the oxygen deficiency pond, and store up the mud pond and arrange mud device and be connected with the depositing reservoir through the air stripping.
3. The integrated sewage treatment apparatus of claim 1, wherein: the sewage treatment equipment also comprises a disinfection tank, wherein the disinfection tank is positioned at the downstream of the sedimentation tank and is connected with the sedimentation tank through an overflow weir;
further, the disinfection tank is provided with a gravity water outlet and an air extraction water outlet.
4. The integrated sewage treatment apparatus of claim 1, wherein: the power structure at the bottom of the sedimentation tank is a reflux pump or an air stripping device.
5. The integrated sewage treatment apparatus of claim 1, wherein: the anaerobic tank is internally provided with a filler supporting plate, a filler pressing plate and a mud suction pipe which penetrates through the filler supporting plate and the filler pressing plate, the filler pressing plate is positioned above the filler supporting plate, and anaerobic filler is filled between the filler pressing plate and the filler supporting plate;
furthermore, a back washing aeration pipe is arranged below the filler supporting plate and is connected with an air source;
further, the anoxic filler has a diameter of
6. The integrated sewage treatment apparatus of claim 1, wherein: the upper parts of the first-stage aerobic tank and the second-stage aerobic tank are provided with filler cover plates, and movable plates are arranged on the filler cover plates.
7. The integrated sewage treatment apparatus of claim 1, wherein: the bottom parts of the first-stage aerobic tank and the second-stage aerobic tank are provided with aerators;
further, the aerator is a thin film tube type microporous aerator.
8. The integrated sewage treatment apparatus of claim 1, wherein: and the overflow ports of the anoxic tank, the primary aerobic tank and the secondary aerobic tank are provided with filler blocking nets.
9. A sewage treatment method based on an A/O-MBBR process is characterized in that: the method comprises the following steps:
the sewage and nitrifying liquid returned by the sedimentation tank enter a clarification tank together, the sewage is clarified and filtered by sludge and overflows to an anoxic tank, a carbon source is supplemented into the anoxic tank, denitrification reaction is carried out, and total nitrogen is removed;
overflowing the sewage in the anoxic tank to a primary aerobic tank to degrade most of COD and part of ammonia nitrogen;
the effluent of the primary aerobic tank overflows into a secondary aerobic tank to degrade the residual COD and most of ammonia nitrogen;
the effluent of the secondary aerobic tank enters a sedimentation tank for solid-liquid separation; and (4) refluxing the nitrifying liquid at the bottom of the sedimentation tank into a clarification tank, and adding a phosphorus removal agent in the refluxing process.
10. The wastewater treatment method according to claim 9, characterized in that: the effluent of the sedimentation tank enters a disinfection tank for disinfection;
or, the phosphorus removal agent is polyaluminium chloride; the carbon source is sodium acetate or glucose.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010555017.9A CN111675435A (en) | 2020-06-17 | 2020-06-17 | Integrated sewage treatment equipment based on A/O-MBBR (anaerobic-anoxic-aerobic-moving bed biofilm reactor) process and sewage treatment method |
| PCT/CN2020/112273 WO2021253637A1 (en) | 2020-06-17 | 2020-08-28 | A/o-mbbr process-based integrated sewage treatment device and sewage treatment method |
| ZA2021/08456A ZA202108456B (en) | 2020-06-17 | 2021-10-29 | Integrated sewage treatment equipment and sewage treatment method based on a/o-mbbr process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010555017.9A CN111675435A (en) | 2020-06-17 | 2020-06-17 | Integrated sewage treatment equipment based on A/O-MBBR (anaerobic-anoxic-aerobic-moving bed biofilm reactor) process and sewage treatment method |
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| Publication Number | Publication Date |
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| CN111675435A true CN111675435A (en) | 2020-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010555017.9A Pending CN111675435A (en) | 2020-06-17 | 2020-06-17 | Integrated sewage treatment equipment based on A/O-MBBR (anaerobic-anoxic-aerobic-moving bed biofilm reactor) process and sewage treatment method |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN111675435A (en) |
| WO (1) | WO2021253637A1 (en) |
| ZA (1) | ZA202108456B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113511777A (en) * | 2021-05-25 | 2021-10-19 | 江苏南大华兴环保科技股份公司 | Chemical industry park comprehensive sewage treatment system and process |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115159681A (en) * | 2022-07-29 | 2022-10-11 | 江苏河马井股份有限公司 | Multistage good anaerobism sewage treatment system |
| CN115650417A (en) * | 2022-10-19 | 2023-01-31 | 青岛万慧源环保科技有限公司 | Ecological system based on EBR (electron beam reduction) process and discharged sewage treatment method |
| CN116002884A (en) * | 2022-10-27 | 2023-04-25 | 北京沃尔德斯水务科技有限公司 | Regulation and storage tank and combined overflow sewage purification treatment method |
| CN115925205B (en) * | 2023-02-27 | 2023-07-18 | 山东天大泰泽环保科技有限公司 | TDI production wastewater treatment system and process |
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| Publication number | Publication date |
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| WO2021253637A1 (en) | 2021-12-23 |
| ZA202108456B (en) | 2022-03-30 |
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Effective date of registration: 20220107 Address after: Huai Village Street Huaiyin District of Ji'nan city of Shandong Province, No. 73 250022 Applicant after: CRRC SHANDONG Co.,Ltd. Applicant after: JIANGSU ZHONGCHE ENVIRONMENTAL PROTECTION EQUIPMENT Co.,Ltd. Address before: 215500 Text Road of Yushan High-tech Industrial Park, Changshu City, Jiangsu Province Applicant before: JIANGSU ZHONGCHE ENVIRONMENTAL PROTECTION EQUIPMENT Co.,Ltd. |
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Address after: Huai Village Street Huaiyin District of Ji'nan city of Shandong Province, No. 73 250022 Applicant after: CRRC SHANDONG Co.,Ltd. Applicant after: Jiangsu CRRC Huateng Environmental Protection Technology Co.,Ltd. Address before: Huai Village Street Huaiyin District of Ji'nan city of Shandong Province, No. 73 250022 Applicant before: CRRC SHANDONG Co.,Ltd. Applicant before: JIANGSU ZHONGCHE ENVIRONMENTAL PROTECTION EQUIPMENT Co.,Ltd. |
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Application publication date: 20200918 |