CN210764835U - Catalytic MBR (membrane bioreactor) for removing antibiotics in water - Google Patents

Catalytic MBR (membrane bioreactor) for removing antibiotics in water Download PDF

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CN210764835U
CN210764835U CN201822108429.9U CN201822108429U CN210764835U CN 210764835 U CN210764835 U CN 210764835U CN 201822108429 U CN201822108429 U CN 201822108429U CN 210764835 U CN210764835 U CN 210764835U
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catalytic
mbr reactor
sludge
water
tank
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相佳俊
郭建宁
王彬权
周嘉敏
唐广惠
叶圳
张恒
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Shenzhen Institute of Information Technology
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Shenzhen Institute of Information Technology
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Abstract

The utility model provides a can get rid of aquatic antibiotic's catalysis MBR reactor, take place and aeration equipment, suction system, mud collecting system, ceramic membrane subassembly and connect the pipeline between each system including main reaction tank, add medicine mixing system, pre-oxidation pond, ozone. The catalytic MBR reactor carries out pre-oxidation treatment on inlet water, not only can degrade pollutants, but also has certain promotion effect on the formation of flocs in a subsequent coagulation process, and the generated flocs and suspended fillers in the main reaction tank can provide carriers for sessile microorganisms, thereby being beneficial to the propagation of the microorganisms and achieving the effects of strengthening the removal of organic pollutants and reducing energy consumption.

Description

Catalytic MBR (membrane bioreactor) for removing antibiotics in water
Technical Field
The utility model relates to a get rid of catalysis MBR reactor of aquatic antibiotic belongs to water and waste water treatment field. This utility model adds the catalytic action of ozone aeration and manganese dioxide on the basis of getting rid of aquatic particulate matter, improves the catalytic oxidation effect of ozone to difficult degradation organic matter, realizes getting rid of antibiotic and multiple pollutant, is suitable for the waste water treatment who contains the low concentration of antibiotic.
Background
China is a large country for producing and using antibiotics and is also a country deeply polluted by antibiotic wastewater, particularly along with the rapid development of the pharmaceutical industry, the pollution caused by the pharmaceutical wastewater generated along with the development of the pharmaceutical industry is increasingly serious, meanwhile, along with the development of the breeding industry, more and more people speak the antibiotics for preventing and treating diseases of livestock, according to statistics, the annual amount of the antibiotics used as feed additives is up to 6000 tons, most people have unreasonable application of the antibiotics, so that the waste is not small, 75% of the antibiotics are discharged along with the excrement of the livestock, and the produced breeding wastewater is also an important source of the antibiotic wastewater. The production of antibiotic wastewater is continuously increased, the annual average treatment capacity and treatment effect are not ideal, and especially the antibiotic wastewater produced in production has the characteristics of high COD, high suspended matter concentration, complex components, high salt, residual antibiotic and the like, and is high-concentration organic wastewater rich in organic matters difficult to degrade and biological toxic substances. Because the residual antibiotics in the antibiotic wastewater can seriously inhibit the activity of microorganisms, so that the metabolic activity of the microorganisms is reduced, the biological treatment effect of the wastewater is poor, and the effect of the biological treatment on the treatment of the organic wastewater is not negligible, the research on the method for treating the antibiotic wastewater and the improvement of the quantity of the microorganisms in the antibiotic wastewater are particularly important.
The membrane bioreactor is a novel wastewater treatment system organically combining a membrane separation technology and a biological treatment technology, replaces a secondary sedimentation tank in the traditional biological treatment technology with a membrane component, keeps high-activity sludge in the bioreactor, improves the biological treatment organic load, reduces the floor area, has stable effluent quality, and is easy to realize automatic control. Therefore, when the membrane bioreactor is used for treating the antibiotic wastewater, the treatment effect of the membrane bioreactor is enhanced, the microbial biomass can be increased by adopting a method of adding fillers, the ozone aeration oxidation effect is adopted, and the improvement on a ceramic membrane component is realized. The related domestic main patents are:
an organic wastewater ozone oxidation catalyst, a preparation method and application thereof (application publication No. CN 107670685A). the catalyst consists of a ZSM-5 molecular sieve, alumina and an oxide of an active metal; the active metals are manganese, nickel, iron and titanium. This patent focuses on the preparation of a catalytic membrane, not similar to antibiotic removal. A Fenton oxidation-MBR combined method for advanced treatment of antibiotic wastewater (application publication No. CN 105923888A) mainly utilizes a Fenton oxidation process to carry out preliminary oxidation degradation on antibiotics and refractory organic matters in the antibiotic wastewater, and further combines with MBR process advanced treatment to enable effluent to reach the discharge standard. The core of the patent lies in the combination of Fenton oxidation and MBR process, and the removal of antibiotics by ozone pre-oxidation and ozone + ceramic membrane catalytic oxidation which are emphasized by the applied patent does not overlap. A flat ceramic ultrafiltration membrane bioreactor (publication No. CN 103304021A) is characterized in that a traditional membrane bioreactor is modified by utilizing a flat ceramic membrane and a fixed FSB biological carrier, so that microbial flocs are attached to the surface of a biological filler, and membrane pollution is effectively relieved. The method is characterized in that MBR is modified by ceramic membrane and FSB, and ozone catalytic oxidation antibiotics and MBR related contents are not mentioned.
In combination with the above conclusions, the problems we need to solve are: 1) the antibiotic wastewater has an inhibiting effect on the growth and activity of microorganisms, and can greatly reduce the biological treatment effect of the wastewater; 2) the amount of microorganisms can be increased by aeration and filling, but the effect is still not optimistic; 3) antibiotics belong to organic pollutants difficult to degrade, and are difficult to completely degrade only by the oxidation treatment effect of pure ozone aeration.
Disclosure of Invention
For solving the problem that current membrane bioreactor exists, the utility model provides a can get rid of catalytic MBR reactor of aquatic antibiotic, it at first carries out the pre-oxidation treatment of ozone to intaking, carry out throwing of coagulant in the water after the pre-oxidation pipeline again and throw, water after the mixture gets into agitating unit, reentrant main reaction tank after the stirring of a set time in, the membrane module that ceramic membrane constitutes has been placed in main reaction tank, the suspension type is packed and is arranged between the membrane module, and use the ozone aeration, the aeration direction is carried on the back mutually with the rivers direction, realize the stirring of steam and mix, modify ceramic membrane module simultaneously, the utilization uses the novel ceramic membrane that manganese dioxide made as catalytic material to have the reinforcing effect to the oxidation of ozone, strengthen the effect of getting rid of pollutant.
The purpose of the utility model is mainly realized through the following technical scheme:
a catalytic MBR reactor capable of removing antibiotics in water comprises a main reaction tank, a dosing and stirring system, a pre-oxidation tank, an ozone generation and aeration device, a suction system, a sludge collection system, a ceramic membrane component and a pipeline connected among the systems,
wherein the pre-oxidation tank, the dosing and stirring system and the main reaction tank are sequentially connected through a pipeline, the ozone generating and aerating device respectively provides ozone for the pre-oxidation tank and the main reaction tank through pipelines, the main reaction tank and the dosing and stirring system are connected with the sludge collection system through pipelines,
the main reaction tank consists of a reaction area and a sludge area, the reaction area is an area A and an area B, a hanging part is arranged at the top of the reaction area and used for hanging filler and a ceramic membrane assembly in the reaction area, an ozone aeration device is arranged below the hanging filler, the direction of an aeration head is upward, the sludge area is connected with a sludge discharge pump through a sludge discharge valve and enters a sludge collection system, a water inlet of the main reaction tank is positioned beside the tank wall, the direction is vertical downward, and the ceramic membrane assembly is connected with a water outlet pipe and a suction pump of a suction system.
As a preferred technical solution of the present invention, the adopted ceramic membrane is a flat ceramic membrane, and the membrane is made of an oxide of an active metal containing manganese dioxide as a catalytic material.
As an optimized technical proposal of the utility model, a suspension type filler is arranged in the reaction area and is evenly distributed between each ceramic membrane component.
As an optimized technical proposal of the utility model, the ozone aeration is carried out by the ozone aeration device of the catalytic MBR reactor, and the aerator adopts a micropore plate or a micropore pipe made of novel ceramics.
As an optimized technical proposal of the utility model, the main reaction tank uses the micropore aeration rod of the aeration device as a boundary, the main reaction tank is divided into two areas, the micropore aeration rod is arranged above the reaction area, and the sludge area is arranged below the reaction area.
As an optimized technical scheme of the utility model, the inlet tube is connected to the pre-oxidation pond of catalysis MBR reactor, and built-in micropore aeration stick, outlet connection pipe are connected with the pencil that adds through the line mixer and get into and add medicine mixing system.
As the utility model discloses a preferred technical scheme, the ceramic membrane subassembly is connected with the suction pump with the outlet pipe, under the effect of suction pump, under the effect of pressure, rivers are from the extroversion inwards enter into the ceramic membrane through the ceramic membrane wall, then derive by the outlet pipe.
As the utility model discloses an optimized technical scheme, catalysis MBR reactor need carry out throwing of coagulant and throws, thoughtlessly congeals mixing system and advances water piping connection, and the inlet tube enters into main reaction tank after thoughtlessly congeals mixing system's stirring pond stirring.
As an optimal technical scheme of the utility model, the main reaction tank and the agitating unit of catalysis MBR reactor can produce mud in the processing procedure, and two devices are equipped with the sludge bucket, and the sludge bucket all is connected with the dredge pump, and the mud that will produce is discharged into through the dredge pump and is stored up the mud jar and collect.
As an optimized technical proposal of the utility model, the membrane component used by the utility model is a novel ceramic membrane with oxidation resistance and high mechanical strength.
As an optimal technical scheme of the utility model, add medicine mixing system, for realizing medicament and waste water intensive mixing, adopt the pipeline to add the medicine to having added agitating unit in the successor, having carried out the speed governing to the agitator through buncher, with the best of realization effect of coagulating.
As an optimized technical proposal of the utility model, the pre-oxidation tank of the utility model not only preliminarily degrades the organic matter, but also plays a certain promoting role in the subsequent coagulating sedimentation.
As an optimal technical scheme of the utility model, the utility model discloses an used diameter size that hangs the filler need cooperate with dull and stereotyped ceramic membrane's installation clearance and the aperture of division board, and the filler is made for the flexible material of oxytolerant.
One of the key problems solved by the utility model is that the antibiotic wastewater can be effectively treated. The principle is as follows:
1) the fluid filler in the reactor can provide more growth conditions for microorganisms; the quantity of microorganisms in the reactor is increased, and the removal effect on antibiotics and other organic pollutants is enhanced;
2) the ozone can decompose macromolecular organic matters such as antibiotics and the like through oxidation, so that the hydrophilicity of the organic matters is increased, and the degradation of pollutants in the membrane tank is facilitated;
3) the membrane component, the guide plate and the baffle plate are all composed of ceramic membranes taking manganese dioxide as catalytic materials, and the manganese dioxide in the ceramic membranes has a catalytic effect on the oxidation of ozone.
The utility model has the following advantages when treating antibiotic wastewater:
1) the water inlet is subjected to pre-oxidation treatment, so that pollutants can be degraded, and the formation of flocs in a subsequent coagulation process is promoted to a certain extent;
2) when the coagulation process is adopted, the pipeline is adopted for adding the chemicals, so that the chemicals are fully mixed with water, the chemicals and the water are stirred, flocs with certain concentration are easier to form, the concentration of suspensible particulate matters in the water is reduced, and the generated flocs and the suspended filler in the main reaction tank can provide carriers for the stationary microorganisms, thereby being beneficial to the propagation of the microorganisms;
3) the ozone can decompose macromolecular organic matters which are difficult to be degraded by microorganisms, and the removal effect of organic pollutants is enhanced;
4) the use of ozone aeration can accelerate the mass transfer of oxygen and reduce energy consumption;
5) the ceramic membrane in the reactor has a catalytic action on the oxidation action of ozone, and enhances the decomposition of macromolecular organic matters such as antibiotics and the like.
Drawings
Fig. 1 is a schematic structural diagram of the MBR reactor of the present invention.
FIG. 2 is a side view of the main reaction tank of the present invention.
Detailed Description
The invention is further described below by means of examples and figures, it being noted that these examples are given for illustrative purposes and do not constitute a limitation of the scope of the invention.
Example 1 catalytic MBR reactor capable of removing antibiotics in water and treatment method
As shown in fig. 1, a catalytic MBR reactor capable of removing antibiotics in water mainly comprises:
a catalytic MBR reactor capable of removing antibiotics in water comprises a main reaction tank 1, a dosing and stirring system 2, a pre-oxidation tank 3, an ozone generation and aeration device 4, a suction system, a sludge collection system 6, a ceramic membrane component 5 and pipelines connected among the systems,
wherein the pre-oxidation tank, the dosing and stirring system and the main reaction tank are sequentially connected through a pipeline, the ozone generating and aerating device respectively provides ozone for the pre-oxidation tank and the main reaction tank through pipelines, the main reaction tank and the dosing and stirring system are connected with the sludge collection system through pipelines,
the main reaction tank consists of a reaction area and a sludge area, the reaction area is an area A and an area B, a hanging part is arranged at the top of the reaction area and used for hanging filler and a ceramic membrane assembly in the reaction area, an ozone aeration device is arranged below the hanging filler, the direction of an aeration head is upward, the sludge area is connected with a sludge discharge pump through a sludge discharge valve and enters a sludge collection system, a water inlet of the main reaction tank is positioned beside the tank wall, the direction is vertical downward, and the ceramic membrane assembly is connected with a water outlet pipe and a suction pump of a suction system.
As shown in fig. 2, the main reaction tank 1: the reactor is provided with a suspended filler 11, and is used as a carrier for microorganism adhesion in the reactor, the suspended filler is uniformly arranged between ceramic membrane components, a sludge hopper 12 is used for collecting sludge generated in the treatment process, and the sludge hopper is connected with a sludge discharge valve, so that the collection treatment after the sludge is fully collected is facilitated.
A coagulation dosing pump 2: the system is provided with a coagulant storage tank 21, a mixing pipeline mixer 22, a dosing pipe 23, a speed regulating motor 24 and a coagulation stirring tank 25, wherein a medicament is dosed through the dosing pipe 23, is mixed with water and medicine in the pipeline mixer through a water inlet pipe 31, then enters the coagulation stirring tank 25, and is regulated through the speed regulating motor 24, so that the optimal flocculation effect in the coagulation stirring tank is achieved, and the better coagulation completion process of the following process is facilitated.
A pre-oxidation pond 3: antibiotic waste water enters into the pre-oxidation pond through the inlet tube 31, and ozone is injected into the pre-oxidation pond through the micropore aeration rod 42, so that the oxidation treatment of pollutants is realized.
The ozone generator 4: has an aeration fan 41, a micropore aeration rod 42 and a gas pipe 43. Ozone generator produces ozone, leads to the gas-supply pipe through aeration fan, and the rethread pipeline transports ozone to pre-oxidation pond and main reaction tank respectively, can be with even distribution of ozone in the reaction tank bottom through micropore aeration stick to micropore aeration stick is the border, divides into reaction zone and mud district with main reaction tank.
Ceramic membrane module 5: the device is provided with a water outlet pipe 51 and a suction pump 52, wherein the suction pump can provide suction pressure of-80 kPa and a lift of 200kPa, negative pressure is formed in the water outlet pipe, water in the main reaction tank is led out and collected through pores of the ceramic membrane module and finally led out through the water outlet pipe, the filtering effect is realized, and the suction pump can also be used as a backflushing pump for cleaning the ceramic membrane module.
A sludge discharge pump 6: the sludge in the main reaction tank and the sludge in the sludge discharge pipe 62 are connected with the sludge hopper of the stirrer, when the sludge in the hopper reaches a certain amount, the sludge discharge valve 13 is opened, and under the action of the sludge discharge pump, the sludge is collected into the sludge storage tank 61 through the sludge discharge pipe and then is treated.
The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.

Claims (9)

1. The utility model provides a get rid of catalysis MBR reactor of aquatic antibiotic which characterized in that: comprises a main reaction tank, a dosing and stirring system, a pre-oxidation tank, an ozone generation and aeration device, a suction system, a sludge collection system, a ceramic membrane component and a pipeline for connecting the systems;
wherein, the pre-oxidation tank, the dosing and stirring system and the main reaction tank are sequentially connected through a pipeline, the ozone generating and aerating device respectively provides ozone for the pre-oxidation tank and the main reaction tank through pipelines, and the main reaction tank and the dosing and stirring system are connected with the sludge collection system through pipelines;
the main reaction tank consists of a reaction area and a sludge area, the reaction area is an area A and an area B, a hanging part is arranged at the top of the reaction area and used for hanging filler and a ceramic membrane assembly in the reaction area, an ozone aeration device is arranged below the hanging filler, the direction of an aeration head is upward, the sludge area is connected with a sludge discharge pump through a sludge discharge valve and enters a sludge collection system, a water inlet of the main reaction tank is positioned beside the tank wall, the direction is vertical downward, and the ceramic membrane assembly is connected with a water outlet pipe and a suction pump of a suction system.
2. The catalytic MBR reactor of claim 1, wherein the catalytic MBR reactor is configured to remove antibiotics from water, and further comprises: the ceramic membrane used is a flat ceramic membrane, and the membrane is made of an oxide of an active metal containing manganese dioxide as a catalytic material.
3. The catalytic MBR reactor of claim 1, wherein the catalytic MBR reactor is configured to remove antibiotics from water, and further comprises: the reaction zone is internally provided with suspended fillers which are uniformly distributed among the ceramic membrane components.
4. The catalytic MBR reactor of claim 1, wherein the catalytic MBR reactor is configured to remove antibiotics from water, and further comprises: the catalytic MBR reactor can carry out ozone aeration through an ozone aeration device, and the aerator is a microporous plate or a microporous pipe made of novel ceramics.
5. The catalytic MBR reactor of claim 1, wherein the catalytic MBR reactor is configured to remove antibiotics from water, and further comprises: the main reaction tank is divided into two areas by taking a micropore aeration rod of the aeration device as a boundary, a reaction area is arranged above the micropore aeration rod, and a sludge area is arranged below the micropore aeration rod.
6. The catalytic MBR reactor of claim 1, wherein the catalytic MBR reactor is configured to remove antibiotics from water, and further comprises: the pre-oxidation tank of the catalytic MBR is connected with a water inlet pipe, a micropore aeration rod is arranged in the pre-oxidation tank, and an outlet connecting pipe is connected with a dosing pipe through a pipeline mixer and enters a dosing stirring system.
7. The catalytic MBR reactor of claim 1, wherein the catalytic MBR reactor is configured to remove antibiotics from water, and further comprises: the ceramic membrane component is connected with the water outlet pipe and the suction pump, and under the action of the suction pump and the pressure, water flow enters the ceramic membrane from outside to inside through the ceramic membrane wall and is then led out through the water outlet pipe.
8. The catalytic MBR reactor of claim 1, wherein the catalytic MBR reactor is configured to remove antibiotics from water, and further comprises: the catalytic MBR reactor needs to be added with a coagulant, the coagulation stirring system is connected with a water inlet pipe, and the water inlet pipe enters the main reaction tank after being stirred by a stirring tank of the coagulation stirring system.
9. The catalytic MBR reactor of claim 1, wherein the catalytic MBR reactor is configured to remove antibiotics from water, and further comprises: the main reaction tank and the stirring device of the catalytic MBR reactor can generate sludge in the treatment process, sludge buckets are arranged in the two devices and are connected with a sludge discharge pump, and the generated sludge is discharged into a sludge storage tank through the sludge discharge pump and collected.
CN201822108429.9U 2018-12-14 2018-12-14 Catalytic MBR (membrane bioreactor) for removing antibiotics in water Active CN210764835U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114538968A (en) * 2022-01-11 2022-05-27 济南槐荫尘峰环保技术开发中心 Method for resource utilization of excrement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114538968A (en) * 2022-01-11 2022-05-27 济南槐荫尘峰环保技术开发中心 Method for resource utilization of excrement

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