CN212269773U - Biological nitrogen and phosphorus removal coupling membrane pollution control device based on MUCT-MBER - Google Patents
Biological nitrogen and phosphorus removal coupling membrane pollution control device based on MUCT-MBER Download PDFInfo
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- CN212269773U CN212269773U CN201921828806.4U CN201921828806U CN212269773U CN 212269773 U CN212269773 U CN 212269773U CN 201921828806 U CN201921828806 U CN 201921828806U CN 212269773 U CN212269773 U CN 212269773U
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Abstract
The utility model discloses a biological nitrogen and phosphorus removal coupling membrane pollution control device based on MUCT-MBER, including the case of intaking, anaerobism pond, first oxygen deficiency pond, second oxygen deficiency pond and MBER pond, the case of intaking carries the raw water to the anaerobism pond in proper order through the intake pump, first oxygen deficiency pond and second oxygen deficiency pond, and the second oxygen deficiency pond passes through the elevator pump and gets into in the MBER pond, is equipped with plate-type membrane module and aeration pump in the MBER pond, and plate-type membrane module is connected with pulse power supply and panel, and the MBER pond is connected with DO pH appearance. The utility model discloses an utilize the electricity coacervation to realize the real-time replenishment of nascent state macromolecule flocculating agent, provide the electron carrier for the microbial community, realize strengthening under the condition of energy-conservation and get rid of pollutants such as organic matter, nitrogen, phosphorus, simultaneously electrified pollutant particle is the swimming in the electric field, wherein partial electric charge is in by the electrode in and then promote its destabilization and gather the sediment, thereby reduce the cleaning frequency to the membrane module to the pollution reduction of board-like membrane, finally realize realizing the technological coupling that the membrane pollutes when realizing high-efficient nitrogen and phosphorus removal.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment, in particular to biological nitrogen and phosphorus removal coupling membrane pollution control device based on MUCT-MBER.
Background
At present, the problems of water resource shortage, energy shortage and serious water pollution are three major factors restricting the national economy development of China. The shortage of water resources causes the shortage of runoff water flow and underground water source, so that the total amount of pollutants which can be accommodated by a water system is small, and the water environment pollution is easy to cause; energy shortage results in the inability to eliminate pollution using high treatment efficiency but high energy consumption techniques, thereby reducing the ability to abate pollutants discharged into water systems, both of which are important causes of adverse water environmental protection. In the face of rapid development of economy, water pollutants are inevitably generated in industrial production and people's life. After water pollutants enter a water body, water resources are influenced firstly. Therefore, the elimination of water pollution, especially the elimination of water pollution with high efficiency and low energy consumption, is not only an important task of environmental protection, but also an important task of water resource protection and effective utilization. Meanwhile, in order to realize the continuity of the sewage treatment process, a plurality of monomer devices have to be adopted to alternately feed water to periodically operate, the utilization rate of the devices is low, the occupied area and the investment are increased, and the condition that the biology does not reach the optimized state is also one of important reasons for causing low volume load of the devices and needing large volume of the devices. Whether continuous organic carbon removal, nitrogen removal and phosphorus removal can be realized in a monomer device is always a hot problem of research.
The traditional A2/O process (also called A-A-O process, which is the abbreviation of the first letter of Anaerobic-Oxic-aerobic) has high pollutant removal rate, stable operation and better impact load resistance, but the phosphorus removal effect is influenced by DO and nitrate nitrogen and oxygen in the returned sludge, so the nitrogen and phosphorus removal efficiency is not too high, the UCT (university of Cape Town) process researched by the university of south Africa, which returns the returned sludge of the sedimentation tank to the Anoxic tank instead of the Anaerobic tank on the basis of the A2/O process, prevents nitrate nitrogen from entering the Anaerobic tank to destroy the Anaerobic environment and influence the phosphorus removal efficiency, and simultaneously increases the return of mixed liquid from the Anoxic tank to the Anaerobic tank, the concentration of nitrate nitrogen is greatly reduced due to denitrification, the Anaerobic environment of the Anaerobic tank is not influenced, and the MUCT (modified university of Cap) process adds an Anoxic tank on the basis of the UCT, the system is provided with two internal circulations, so that the dephosphorization effect of the system is optimized.
An MBR (Membrane Bio-Reactor), also called a Membrane bioreactor, is applied in the field of wastewater in the United states of the twentieth sixties, has an efficient interception function, can effectively intercept microorganisms, particulate matters and macromolecular organic matters in the Reactor, and compared with the traditional denitrification and dephosphorization process, the MBR can enable nitrifying bacteria to stay in an aerobic tank for a long time, so that the growth of the nitrifying bacteria is met, the loss of the nitrifying bacteria is reduced, meanwhile, the MBR can keep higher sludge concentration, can replace an aerobic tank and a secondary sedimentation tank, can strengthen the removal effect of colloidal phosphorus, and has a wider application prospect in the aspect of strengthening denitrification and dephosphorization in recent years.
The English people at the end of the nineteenth century firstly use electric power in wastewater treatment, pulse electrochemistry is a novel electrochemical technology, the pulse electrochemistry has the advantages of traditional electrochemistry, the defects that the power consumption can be obviously degraded through periodic voltage exchange and the electrode passivation can be relieved are used, the pulse electrochemical method is simple and feasible, the novel water treatment technology which is convenient to control and saves the energy consumption is convenient, meanwhile, the dissolved metal ions are reacted with the soluble phosphorus in the sewage to generate insoluble precipitates after the metal electrodes are electrified, and then the phosphorus is removed.
The MUCT-MBER process system firstly realizes that three reaction areas of an anoxic reaction area, an aerobic reaction area and a membrane bioreactor in a body complete various biochemical reaction processes, thereby realizing the removal of pollutants such as organic matters, nitrogen, phosphorus and the like under the energy-saving state; secondly, introducing a process of forming an in-situ membrane bioreactor by electrocoagulation to promote the growth activity of microorganisms, and generating a nascent-state macromolecular flocculant in real time, so that the pollution of a membrane component is effectively reduced while the phosphorus is efficiently removed, thereby improving the effluent quality and finally realizing the membrane electrolysis in a single reaction device.
SUMMERY OF THE UTILITY MODEL
To the technical problem who exists among the prior art, the utility model provides a biological nitrogen and phosphorus removal coupling membrane pollution control device based on MUCT-MBER realizes pollutants such as desorption organic matter, nitrogen, phosphorus under energy-conserving state, forms normal position membrane bioreactor technology through introducing electrocoagulation, promotes the microorganism activity of growing, can produce new ecological macromolecule flocculating agent in real time moreover, effectively slows down the device of the pollution of membrane module when high-efficient dephosphorization.
In order to solve the technical problem, the utility model discloses a technical scheme is:
the utility model provides a biological nitrogen and phosphorus removal coupling membrane pollution control device based on MUCT-MBER, includes into water case, anaerobism pond, first oxygen deficiency pond, second oxygen deficiency pond and MBER pond, it carries the raw water to anaerobism pond, first oxygen deficiency pond and second oxygen deficiency pond in proper order through the intake pump to intake the case, the second oxygen deficiency pond passes through the elevator pump and gets into in the MBER pond, be equipped with plate-type membrane module and aeration pump in the MBER pond, plate-type membrane module is connected with pulse power supply and panel, the MBER pond is connected with DO pH appearance.
Preferably, the MBER pool is also connected with a water production pump, and a vacuum pressure gauge is arranged on a pipeline of the water production pump.
Preferably, a reflux pump is arranged between the MBER tank and the anaerobic tank.
Preferably, stirrers are arranged in the anaerobic tank, the first anoxic tank and the second anoxic tank.
Preferably, the water inlet tank, the anaerobic tank, the first anoxic tank, the second anoxic tank and the MBER tank are all made of organic glass.
Preferably, the plate-type membrane assembly is made of PVDF, the length of the membrane assembly is 40cm, the height of the membrane assembly is 30cm, and an iron plate with the length of 38cm multiplied by 20cm multiplied by 0.2cm is arranged as an electrochemical cathode and an electrochemical anode.
The novel MUCT-MBER-based biological nitrogen and phosphorus removal coupled membrane pollution control device has the following beneficial effects: the utility model discloses an in MBER membrane bioreactor, utilize the real-time replenishment of electricity coacervation realization nascent state macromolecule flocculating agent, provide the electron carrier for the microbial community, realize the intensive organic matter of getting rid of under the condition of energy-conservation, nitrogen, pollutants such as phosphorus, simultaneously electrified pollutant granule swimming in the electric field, wherein partial electric charge is in by the electrode and then promote its destabilization and gather and sink, thereby reduce the cleaning frequency to the membrane module to the pollution reduction of board-like membrane, finally realize realizing the technological coupling that high-efficient nitrogen and phosphorus removal is controlled membrane pollution simultaneously in MUCT-MBER integral type system.
Drawings
FIG. 1 is a schematic structural view of a biological denitrification and dephosphorization coupled membrane pollution control device based on MUCT-MBER in the present invention.
In the figure: 1. a water inlet tank; 2. a water inlet pump; 3. a stirrer; 4. an anaerobic tank; 5. a first anoxic tank; 6. a second anoxic tank; 7. a reflux pump; 8. a lift pump; 9. an MBER pool; 10. a DO/pH meter; 11. a pulse power supply and a battery panel; 12. a water production pump; 13. an aeration pump; 14. a reflux pump; 15. and a vacuum pressure gauge.
Detailed Description
So that those skilled in the art can better understand the technical solution of the present invention, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in figure 1, the embodiment of the utility model discloses a biological nitrogen and phosphorus removal coupling membrane pollution control device based on MUCT-MBER, including case 1 of intaking, anaerobism pond 4, first oxygen deficiency pond 5, second oxygen deficiency pond 6 and MBER pond 9, case 1 of intaking carries the raw water to anaerobism pond 4 through intake pump 2 in proper order, first oxygen deficiency pond 5 and second oxygen deficiency pond 6, second oxygen deficiency pond 6 gets into in the MBER pond 9 through elevator pump 8, be equipped with board-like membrane module 14 and aeration pump 13 in the MBER pond 9, board-like membrane module 14 is connected with pulse generator and panel 11, MBER pond 9 is connected with DO pH meter 10. The artificial water distribution in the water inlet tank 1 firstly enters the anaerobic tank 4 through the water inlet pump 2, respectively flows through the first anoxic tank 5 and the second anoxic tank 6, and then enters the MBER tank 9 through the lifting pump 8. A reflux pump 7 is arranged between the MBER tank 9 and the anaerobic tank 4.
The internal reflux 2 from the second anoxic tank 6 to the anaerobic tank 4 (the reflux ratio is 100-400%); and the internal reflux from the MBER tank 9 to the first anoxic tank 5 is 1 percent (the reflux ratio is 100 to 200 percent).
In this embodiment, the MBER pool 9 is further connected to a water producing pump 12, and a vacuum pressure gauge 15 is arranged on a pipeline of the water producing pump 12. The aeration intensity of the aeration pump 13 is adjusted by real-time monitoring of the DO/pH meter 10, and the effect of the electric flocculation process on membrane pollution is observed through the change of the vacuum pressure gauge 15 in the water production process.
In the embodiment, the stirrers 3 are arranged in the anaerobic tank 4, the first anoxic tank 5 and the second anoxic tank 6, so that no hydraulic dead angle exists in the reactor, the full contact between sewage and sludge in the reactor is increased, and the full contact and uniform mixing of muddy water is guaranteed.
In this embodiment, the material of the shells of the water inlet tank 1, the anaerobic tank 4, the first anoxic tank 5, the second anoxic tank 6 and the MBER tank 9 is organic glass, the total volume is 72L, and the effective volume is 56.7L.
The plate-type membrane component is made of PVDF, the length of the membrane component is 40cm, the height of the membrane component is 30cm, meanwhile, an iron plate with the length of 38cm multiplied by 20cm multiplied by 0.2cm is arranged as a cathode and an anode of electrochemistry, a DO/pH meter 10 is placed in the iron plate, and parameter change in a reactor is monitored in real time.
The utility model provides an improvement type MUCT technology increases an oxygen deficiency pond promptly in the middle of anaerobism pond and the good oxygen pond in traditional UCT technology, sets up two internal reflux in the system, internal reflux 1: internal reflux from the MBER tank (aerobic membrane tank) 9 to the first anoxic tank 5; internal reflux 2: and the internal reflux from the second anoxic pond 6 to the anaerobic pond 4. The first anoxic tank 5 utilizes the nitrified mixed liquid which flows back in the aerobic membrane tank 9 to perform denitrification, the denitrification efficiency of the system is improved by improving the reflux ratio from the aerobic membrane tank to the first anoxic tank 5, the concentration of the carbon-containing organic matters entering the second anoxic tank is lower than that of the carbon-containing organic matters entering the first anoxic tank 5, and part of the carbon-containing organic matters which are easy to biodegrade in the first anoxic tank 5 is consumed by denitrification, and NO is reduced by the reflux from the second anoxic tank 6 to the anaerobic tank 43 -The interference of N on the phosphorus removal function optimizes the phosphorus removal effect of the system, so that the nitrogen and phosphorus removal effect is better; meanwhile, a dual-iron electrode and a pulse power supply are added into an aerobic membrane pool to form an MBER system, an integrated MUCT-MBER process system is formed through recombination, real-time supplement of a nascent-state macromolecular flocculant is realized by utilizing an electric coagulation effect in an MBER membrane bioreactor, an electronic carrier is provided for microbial flora, pollutants such as organic matters, nitrogen, phosphorus and the like are intensively removed under the energy-saving condition, charged pollutant particles swim in an electric field, partial charges in the charged pollutant particles are neutralized by the electrodes to promote destabilization and coagulation, pollution to a plate-type membrane is reduced, the cleaning frequency of the membrane component is reduced, and finally, process coupling of high-efficiency denitrification and phosphorus removal and control of membrane pollution in the MUCT-MBER integrated system is realized.
Optimizing MUCT-MBER high-efficiency biological nitrogen and phosphorus removal coupled membrane pollution, adopting the device comprises the following steps:
firstly, the method comprises the following steps: firstly, starting a reactor, and controlling the HRT to change within 10-20 h; the internal reflux 2 from the second anoxic tank 6 to the anaerobic tank 4 (the reflux ratio is 100-400%); the internal reflux from the MBER pool 9 to the first anoxic pool 5 is 1 percent (the reflux ratio is 100 to 200 percent), then the DNPAOs are enriched and the change of floras in stable operation is enhanced, and finally the removal effect on organic matters and nitrogen is inspected.
Secondly, the method comprises the following steps: the investigation of the influence factors on membrane fouling under the stable operation of the system, the analysis of the change of transmembrane pressure difference and the contamination on the surface of the membrane filaments.
Thirdly, the method comprises the following steps: the influence of the aeration intensity and the reflux ratio on the denitrification and dephosphorization effects and the change rule thereof are researched by optimizing the synergic influence rule of the aeration intensity and the reflux ratio on the MUCT-MBER process.
Fourthly: and evaluating the influence of different aeration intensities on pulse electrochemical phosphorus removal and the influence of the flocculation effect of pulse electrochemistry on membrane pollution.
Fifth, the method comprises the following steps: the pollution control of the high-efficiency biological nitrogen and phosphorus removal coupling membrane of the MUCT-MBER process is realized through the research of the influence rule of different influence factors on the MUCT-MBER process system.
The utility model discloses a biological nitrogen and phosphorus removal coupling membrane pollution control device based on MUCT-MBER specifically implements the flow as follows:
the plate-type membrane module 14 is subjected to a clear water test before the test is carried out, and the clear water flux of the plate-type membrane module 14 is measured; before the experiment, a plate electrode needs to be polished by using coarse sand paper and fine sand paper, then the plate electrode is washed by using 10% dilute hydrochloric acid solution to remove iron rust on the surface, finally the plate electrode is cleaned by using clear water and then placed into a reactor, and a perforation aeration device is arranged at the bottom of the MBER to ensure that dissolved oxygen in the tank is uniformly distributed.
In the integrated MUCT-MBER reactor, a water inlet pump 2 firstly sends raw water in a water inlet tank 1 to an anaerobic tank 4, then the raw water respectively passes through a first anoxic tank 5 and a second anoxic tank 6 and finally enters an MBER tank 9, and the internal reflux 2 is controlled to be 100-400%; the internal reflux 1 is controlled at 100-200%.
The test is completed under the condition of long-term operation, and the implementation process is divided into three stages:
stage I: during the starting stage of the MUCT-MBER process system, the HRT is controlled to be about 15 h; SRT is about 25 d; the reflux ratio from the aerobic membrane tank to the first anoxic tank 5 is 400 percent; the reflux ratio from the second anoxic tank 6 to the anaerobic tank 4 is 100 percent; the aeration intensity is 100 L.h-1(ii) a The temperature is controlled at 23 ℃, and the pulse density is controlled at 16A/m2When the system is stably operated, the removal effect of organic matters, nitrogen and phosphorus and the pollution change of the film of the system are researched.
And stage II:the influence rule of the synergistic effect of the pulse density of the reflux ratio under different aeration strengths is researched. Namely, the HRT is controlled to change within 10 h-20 h; the reflux ratio from the aerobic membrane tank to the anoxic tank 1 is (100-400%), the reflux ratio from the second anoxic tank 6 to the anaerobic tank 4 is (100-200%), and the aeration intensity is (100 L.h)-1～300L·h-1) The pulse density is (6A/m)2～40A/m2) Under the change, the removal effect on organic matters, nitrogen and phosphorus and the transmembrane pressure difference are changed.
Stage III: namely, the optimization evaluation in the pollution process of the nitrogen and phosphorus removal coupling membrane in the MUCT-MBER process, the experiment process is optimized on the basis of the stage II, and the final condition of the pollution of the nitrogen and phosphorus removal coupling membrane is found.
The utility model discloses an under the condition of high-efficient nitrogen and phosphorus removal, through adding the effectual control of electrochemistry membrane pollution, reduced the cleaning frequency to the membrane module electrochemistry simultaneously also plays the important role in the aspect of the dephosphorization, the membrane electric combination technology has very wide application prospect value in the aspect of nitrogen and phosphorus removal coupling membrane pollution control, provides important reference for actual engineering from now on.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the protection scope of the present invention is defined by the claims. Various modifications and equivalents of the invention can be made by those skilled in the art within the spirit and scope of the invention, and such modifications and equivalents should also be considered as falling within the scope of the invention.
Claims (6)
1. The utility model provides a biological nitrogen and phosphorus removal coupling membrane pollution control device based on MUCT-MBER, its characterized in that, includes into water tank, anaerobism pond, first oxygen deficiency pond, second oxygen deficiency pond and MBER pond, it carries the raw water to anaerobism pond, first oxygen deficiency pond and second oxygen deficiency pond in proper order through the intake pump to intake the water tank, the second oxygen deficiency pond passes through the elevator pump and gets into in the MBER pond, be equipped with plate-type membrane module and aeration pump in the MBER pond, plate-type membrane module is connected with pulse power supply and panel, the MBER pond is connected with DO/pH appearance.
2. The MUCT-MBER based biological nitrogen and phosphorus removal coupled membrane pollution control device of claim 1, wherein the MBER pool is further connected with a water production pump, and a vacuum pressure gauge is arranged on a pipeline of the water production pump.
3. The MUCT-MBER based biological nitrogen and phosphorus removal coupled membrane pollution control device is characterized in that a reflux pump is arranged between the MBER tank and the anaerobic tank.
4. The MUCT-MBER based biological nitrogen and phosphorus removal coupled membrane pollution control device of claim 1, wherein stirrers are arranged in the anaerobic tank, the first anoxic tank and the second anoxic tank.
5. The MUCT-MBER based biological nitrogen and phosphorus removal coupled membrane pollution control device of claim 1, wherein the water inlet tank, the anaerobic tank, the first anoxic tank, the second anoxic tank and the MBER tank are all made of organic glass.
6. The MUCT-MBER-based biological nitrogen and phosphorus removal coupled membrane pollution control device of claim 1, wherein the plate-type membrane module is made of PVDF, the length of the membrane module is 40cm, the height of the membrane module is 30cm, and iron plates of 38cm x 20cm x 0.2cm are arranged as an electrochemical cathode and an electrochemical anode.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112851025A (en) * | 2021-01-07 | 2021-05-28 | 上海碧州环保能源科技有限公司 | Efficient deep integrated treatment system for high-ammonia nitrogen and high-nitrate nitrogen wastewater |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112851025A (en) * | 2021-01-07 | 2021-05-28 | 上海碧州环保能源科技有限公司 | Efficient deep integrated treatment system for high-ammonia nitrogen and high-nitrate nitrogen wastewater |
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