CN112174306A - Ceramic membrane sewage treatment equipment and method based on domesticated active microorganisms - Google Patents
Ceramic membrane sewage treatment equipment and method based on domesticated active microorganisms Download PDFInfo
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F3/00—Biological treatment of water, waste water, or sewage
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Abstract
The invention provides a ceramic membrane sewage treatment device and method based on domesticated active microorganisms, wherein the device comprises: the reaction tank comprises a water inlet and a water outlet; the microbial culture system comprises a first membrane component, a second membrane component and a third membrane component, wherein a ceramic membrane of the first membrane component is communicated with a gas storage tank through a gas pipeline, microbial culture gas in the gas storage tank is filled into the ceramic membrane, and a biofilm layer is formed in an activated sludge environment and covers the surface of the ceramic membrane of the first membrane component; and the second membrane component is positioned at the downstream of the first membrane component and is communicated with the water outlet through a water outlet pipeline. The difficult problem that microorganism population is uncontrollable among its the MBR technique of having solved current, simultaneously owing to adopted the stationary state microorganism to handle waste water, produce mud volume low and settlement performance good, can solve the problem that membrane module is polluted and the low and frequent change membrane module of producing water that leads to by suspension state activated sludge easily among the current MBR.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to ceramic membrane sewage treatment equipment and a ceramic membrane sewage treatment method based on domesticated active microorganisms.
Background
A Membrane Bioreactor (MBR) is an organic combination of the traditional biochemical treatment technology and the modern membrane separation technology, and membrane components such as a microfiltration membrane, an ultrafiltration membrane, a nanofiltration membrane, reverse osmosis and other filtration processes are used for replacing a sedimentation tank in the traditional activated sludge process, so that the advantages of high load, low energy consumption, methane recycling (anaerobic biological treatment) and the like of the biological treatment technology are reserved; meanwhile, the membrane module realizes the effective separation of HRT and SRT, and relieves the sludge loss problem of the traditional activated sludge process; in addition, the membrane interception can also remove bacteria and viruses in water, and the effluent quality is improved. Therefore, the process has the characteristics of small occupied area, convenient management, high effluent quality, low sludge yield and the like, and is widely applied to treatment of urban domestic sewage and industrial wastewater. However, the conventional ceramic membrane MBR sewage treatment equipment adopts an active sludge plus membrane mode to form an MBR process, a large amount of suspended flocculent active sludge exists in a reactor, and the flocculent active sludge is gathered on the surface of a membrane due to the interception of the sludge by the membrane, so that membrane pollution is very easily caused. Moreover, irreversibly contaminated membrane modules need to be replaced to maintain the process in proper operation. Frequent membrane module replacement also adds significant cost. On the other hand, because the microbial population is difficult to regulate and control, the MBR reactor mainly adopts an aerobic reaction process at present, and mainly removes pollutants such as COD (chemical oxygen demand), ammonia nitrogen and the like. But has no effect on certain pollutants such as sulfate, antibiotics and the like. Moreover, the MLSS concentration in the reactor cannot be further increased, the volume load of the reactor is also limited, and the reactor cannot treat more sewage under the same conditions, subject to the anti-pollution capacity of the membrane module. Therefore, in the current technical state, how to enable the MBR process to utilize the diversity regulation of microorganisms to adapt to the treatment of different types of sewage more widely, and at the same time, to improve the biomass and solve the problem of membrane pollution in the MBR becomes an urgent need for the continued development of the process.
Disclosure of Invention
The invention aims to provide ceramic membrane sewage treatment equipment and method based on domesticated active microorganisms, and at least partially solve the technical problems that in the prior art, the MBR process has single function, the efficiency cannot be further improved, the membrane module is polluted by sludge, the operation efficiency is low, and the membrane module replacement cost is high.
In order to solve the above technical problems, the present invention provides a ceramic membrane sewage treatment apparatus based on domesticated active microorganisms, comprising:
the reaction tank comprises a water inlet and a water outlet;
the microbial culture system comprises a first membrane component, a second membrane component and a third membrane component, wherein a ceramic membrane of the first membrane component is communicated with a gas storage tank through a gas pipeline, microbial culture gas in the gas storage tank is filled into the ceramic membrane, and a biofilm layer is formed in an activated sludge environment and covers the surface of the ceramic membrane of the first membrane component;
and the second membrane component is positioned at the downstream of the first membrane component and is communicated with the water outlet through a water outlet pipeline.
Further, an air compressor is arranged on the air pipeline.
Further, a pressure regulating valve is further arranged on the gas pipeline, and the pressure regulating valve is located on a pipeline between the air compressor and the first membrane assembly.
Further, the pressure regulating valve is arranged outside the reaction tank.
The invention also provides a ceramic membrane sewage treatment method based on domesticated active microorganisms, which comprises the following steps:
domesticating and culturing a preset number of microorganisms on the surface of the first membrane component by using sewage to be treated, activated sludge and microorganism culture gas;
discharging activated sludge;
introducing sewage to be treated into the reaction tank, so that pollutants in the sewage to be treated are degraded under the action of microorganisms on the surface of the first membrane component;
and the sewage to be treated after the microbial degradation enters the second membrane component, is filtered by the second membrane component and is discharged.
Further, a preset number of microorganisms are domesticated and cultured on the surface of the first membrane component by utilizing sewage to be treated, activated sludge and microorganism culture gas, and the method specifically comprises the following steps:
putting the activated sludge into water in a reaction tank, and stirring to disperse the activated sludge in the water and contact the activated sludge with a ceramic membrane;
and (3) filling microorganism culture gas into the ceramic membrane to enable microorganisms to grow on the surface of the ceramic membrane and form a biofilm layer.
Further, the method comprises the following steps of domesticating and culturing a preset number of microorganisms on the surface of the first membrane component by using sewage to be treated, activated sludge and microorganism culture gas, and further comprises the following steps:
and (3) periodically adding carbon source, nitrogen, phosphorus and the like as nutrients into the first membrane component, wherein the acclimation culture time of the microorganisms is 20-30 days.
Further, the membrane flux of the sewage to be treated is 0.03-0.0.06m3Square meter hour.
Further, the microorganism culture gas is one of air, pure oxygen, a mixed gas of the pure oxygen and the air, hydrogen and hydrogen sulfide.
Further, the introduction pressure of the microorganism culture gas is 0.1-2 MPa.
The ceramic membrane sewage treatment equipment and the method provided by the invention utilize two groups of ceramic membrane components, wherein one group of ceramic membrane component (namely, a first membrane component) is used for domesticating and culturing microorganisms and is used as a carrier of the microorganisms, and the other group of ceramic membrane component (namely, a second membrane component) is used for filtering degraded sewage. In the working process, part of activated sludge is firstly put into the sewage to be treated in the reaction tank, the sludge is dispersed in the water and is contacted with the ceramic membrane of the first membrane component through stirring, meanwhile, the ceramic membrane in the first membrane component is filled with gas required for culturing microorganisms, so that the microorganisms rapidly grow on the surface of the ceramic membrane, the activated sludge is discharged after the acclimation is finished, then the sewage to be treated is introduced, so that pollutants in the sewage to be treated are degraded under the action of the microorganisms on the surface of the first membrane component, the sewage to be treated after the microbial degradation enters the second membrane component, and the sewage to be treated is discharged after the filtration of the second membrane component.
Thus, the microbial community attached to the surface of the flat ceramic membrane is used for replacing the activated sludge flocs dispersed in water, so that the surface pollution of the ceramic membrane for filtering sewage can be reduced; moreover, the activity of the microbial community on the surface of the flat ceramic membrane is higher than that of the activated sludge floc which is aerated in water to supply gas nutrients; meanwhile, because the gas stays on the surface of the ceramic membrane and does not escape, the gas utilization rate is higher than that of an aeration mode, and the energy consumption can be greatly reduced. Therefore, the problem that the MLSS concentration can not be further increased to improve the treatment efficiency in the conventional MBR technology is solved, the problems of water production rate reduction and frequent membrane module replacement caused by activated sludge pollution of the membrane module are solved, and the process operation cost is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of an embodiment of a ceramic membrane sewage treatment plant based on domesticated active microorganisms according to the present invention;
FIG. 2 is a schematic view of the microbial cultivation in the sewage treatment apparatus shown in FIG. 1;
FIG. 3 is a flow chart of an embodiment of the method for treating wastewater according to the present invention.
Description of reference numerals:
1-a water inlet 2, a first membrane module 3-a water outlet 4, a second membrane module 5-an air compressor
6-gas storage tank 7-pressure regulating valve 8-ceramic membrane internal channel 9-gas molecule 10-membrane layer pore channel
11-microbial community 12-ceramic membrane surface
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
The ceramic membrane sewage treatment equipment based on domestication of active microorganisms is used for sewage treatment, and utilizes a microorganism culture and degradation technology to replace active sludge by a biological membrane layer of the microorganisms for sewage treatment, so that high-efficiency gas supply capacity is provided for the microorganisms of a treatment system, failure of a ceramic membrane caused by sludge blockage is avoided, the metabolic activity capacity of a microorganism community 11 is improved, the efficiency of degrading pollutants in water by the microorganisms is improved, and the operation and replacement cost of a ceramic membrane MBR process is reduced.
In a specific embodiment, as shown in fig. 1, the ceramic membrane sewage treatment equipment based on domestication of active microorganisms provided by the invention comprises a reaction tank, a first membrane module 2 and a second membrane module 4, wherein the reaction tank comprises a water inlet 1 and a water outlet 3, water is introduced into the reaction tank through the water inlet 1, and after sewage treatment is finished, water is discharged through the water outlet 3. The first membrane module 2 and the second membrane module 4 are arranged in parallel in the reaction tank, and the laying area of the first membrane module 2 is larger than that of the second membrane module 4, for example, the first membrane module 2 can occupy two thirds of the total laying area of the membranes, and the second membrane module 4 can occupy one third of the total laying area of the membranes.
The ceramic membrane of the first membrane module 2 is communicated with the gas storage tank 6 through a gas pipeline, microbial culture gas in the gas storage tank 6 is filled into the ceramic membrane, and a biofilm layer is formed in an activated sludge environment, the biofilm layer covers the ceramic membrane surface 12 of the first membrane module 2, the second membrane module 4 is located at the downstream of the first membrane module 2 (namely, at the downstream in the drainage direction), and the second membrane module 4 is communicated with the water outlet 3 through a water outlet pipeline.
In principle, as shown in fig. 2, during the microbial cultivation process, the microbial cultivation gas is filled into the ceramic membrane internal channel 8, the gas molecules 9 are filled into the ceramic membrane internal channel 8 and enter the ceramic membrane surface 12 through the membrane layer pore channels 10, and the microbial community 11 can be formed on the ceramic membrane surface 12 by contacting with the activated sludge.
In order to improve the gas input performance and ensure the gas flow pressure, an air compressor 5 can be arranged on the gas pipeline. In addition, in order to adjust the airflow pressure according to the conditions so as to meet the requirements of the working conditions better, a pressure regulating valve 7 is further arranged on the gas pipeline, the pressure regulating valve 7 is positioned on the pipeline between the air compressor 5 and the first membrane module 2, and the pressure regulating valve 7 is arranged outside the reaction tank.
The ceramic membrane sewage treatment equipment utilizes the characteristic that the surface 12 of the flat ceramic membrane can grow and attach microorganisms, and the ability of gas to be discharged from the interior of the flat ceramic membrane under a certain pressure, the flat ceramic membrane is used as a growth substrate, air, pure oxygen, mixed gas of the pure oxygen and the air, hydrogen sulfide or other gases are conveyed to the surface 12 of the ceramic membrane from the interior of the ceramic membrane, since the gas requires a certain pressure to escape from the ceramic membrane surface 12 when the ceramic membrane is in water, therefore, as long as the corresponding pressure is maintained, the gas can stay on the ceramic membrane surface 12 and can not be lost, the microorganisms can fully contact with the gas on the ceramic membrane surface 12 and grow and attach on the surface, and when the microorganisms degrade organic pollutants in water, the ceramic membrane also provides sufficient gas raw materials for the microorganisms, so that the degradation efficiency of the ceramic membrane is kept efficient and stable.
In the microbial cultivation process, as the microorganisms can grow rapidly only under proper pressure and proper temperature, the device also comprises an environmental condition early warning device, and the environmental condition early warning device comprises a temperature sensor, a pressure sensor, a controller and an alarm.
The temperature sensor acquires the temperature in the reaction tank in real time, transmits the detected current temperature to the controller, the controller compares the current temperature with a temperature threshold value, and when the temperature is lower than the temperature threshold value, a heating instruction is sent out, so that the heater is driven to be started to realize heating; when the temperature is higher than the temperature threshold value, a cooling instruction is sent out, so that the radiator is driven to be opened to realize cooling; when the temperature is higher than the temperature threshold value by 150%, an alarm signal is sent to the alarm, and the alarm is driven to send out an audible and visual alarm signal.
The pressure sensor acquires the gas pressure of an air supply pipeline in the reaction tank in real time, the detected current pressure is transmitted to the controller, the controller compares the current pressure with a pressure threshold value, and when the pressure is lower than the pressure threshold value, a pressurization instruction is sent out, so that the opening of the pressure regulating valve is driven to be increased, and pressurization is realized; when the pressure is higher than the pressure threshold, sending a pressure reduction instruction, so that the opening of the pressure regulating valve is driven to be reduced, and the pressure reduction is realized; when the pressure is higher than the pressure threshold value by 130%, an alarm signal is sent to the alarm, so that the alarm is driven to send an audible and visual alarm signal, and meanwhile, an opening signal is sent to the bypass pressure release valve, so that the bypass is rapidly released.
Optionally, the alarm may be an audible and visual alarm or an alarm program embedded in the intelligent terminal, and after the alarm is triggered, an alarm voice or a short message may be sent to the designated intelligent terminal, so as to realize rapid alarm.
In the above embodiment, the sewage treatment apparatus according to the present invention can reduce surface contamination of a ceramic membrane for filtering sewage by replacing activated sludge flocs dispersed in water with a microbial community 11 attached to a surface 12 of a flat ceramic membrane; moreover, the activity of the microbial community 11 on the surface 12 of the flat ceramic membrane is higher than that of the activated sludge floc which is aerated in water to supply gas nutrients; meanwhile, because the gas stays on the surface 12 of the ceramic membrane and does not escape, the utilization rate of the gas is higher than that of an aeration mode, and the energy consumption can be greatly reduced. Therefore, the problems of low pollutant degradation efficiency, low water production rate caused by activated sludge pollution and frequent membrane component replacement in the conventional MBR technology are solved, and the process operation cost is reduced.
In addition to the above-mentioned devices, the present invention also provides a ceramic membrane sewage treatment method based on domesticated active microorganisms, as shown in fig. 3, comprising the following steps:
s1: domesticating and culturing a preset number of microorganisms on the surface of the first membrane component by using sewage to be treated, activated sludge and microorganism culture gas; wherein the microorganism culture gas is one of air, pure oxygen, mixed gas of pure oxygen and air, hydrogen and hydrogen sulfide, and the introduction pressure of the microorganism culture gas is 0.1-2 MPa.
S2: discharging activated sludge;
s3: introducing sewage to be treated into the reaction tank, so that pollutants in the sewage to be treated are degraded under the action of microorganisms on the surface of the first membrane component; wherein the membrane flux of the sewage to be treated is 0.03-0.0.06m3Square meter hour.
S4: and the sewage to be treated after the microbial degradation enters the second membrane component, is filtered by the second membrane component and is discharged.
Wherein, step S1 specifically includes:
s11: putting activated sludge into the sewage to be treated in the reaction tank, and stirring to disperse the activated sludge in the water and contact the activated sludge with the ceramic membrane;
s12: and (3) filling microorganism culture gas into the ceramic membrane to enable microorganisms to grow on the surface of the ceramic membrane and form a biofilm layer.
S13: and (3) periodically adding carbon source, nitrogen, phosphorus and the like as nutrients into the first membrane component, wherein the acclimation culture time of the microorganisms is 20-30 days.
The ceramic membrane sewage treatment equipment and the method provided by the invention utilize two groups of ceramic membrane components, wherein one group of ceramic membrane component (namely, a first membrane component) is used for domesticating and culturing microorganisms, and the other group of ceramic membrane component (namely, a second membrane component) is used for filtering degraded sewage. In the working process, part of activated sludge is firstly put into the sewage to be treated in the reaction tank, the sludge is dispersed in the water and is contacted with the ceramic membrane of the first membrane component through stirring, meanwhile, the ceramic membrane in the first membrane component is filled with gas required for culturing microorganisms, so that the microorganisms rapidly grow on the surface of the ceramic membrane, the activated sludge is discharged after the acclimation is finished, then the sewage to be treated is introduced, so that pollutants in the sewage to be treated are degraded under the action of the microorganisms on the surface of the first membrane component, the sewage to be treated after the microbial degradation enters the second membrane component, and the sewage to be treated is discharged after the filtration of the second membrane component.
The treatment method provided by the present invention is further described below with reference to examples.
Example 1
The volume of the box body of the ceramic membrane sewage treatment system is 5 cubic meters, and the flow velocity of water inlet and outlet is 0.5m3The hydraulic retention time is 10 h. The membrane components for domesticating and culturing the microorganisms are uniformly distributed in the box body, which occupies about 2/3 of the volume of the box body, and the total area of the membrane components is 15m2The diameter of the pore canal of the film layer is 10 um. The residual 1/3 space of the box body is used for placing a membrane module for filtering sewage, and the total area of the membrane module is 10m2The diameter of the pore canal of the film layer is 0.6 um. Inputting pure oxygen in the gas storage tank into a ceramic membrane for domesticating and culturing microorganisms through an air compressor, adjusting the conveying pressure to 15kpa, taking the fact that bubbles appear on the surface of the ceramic membrane but do not depart from the surface as the standard, adding 100kg of activated sludge, stirring to disperse the activated sludge in water, contacting the surface of the ceramic membrane with sucrose, nitrogen and phosphate fertilizers as nutrients, finishing the growth and attachment of the microorganisms on the surface of the ceramic membrane after 30 days, pumping out the activated sludge, starting a membrane component for filtering sewage, and pumping into the sewage to be treated, wherein the quality of the sewage is as follows: COD 1620mg/L, BOD 780mg/L, NH4N30mg/L, TN 46 mg/L. After the system works stably, the actual hydraulic retention time is 10h, the converted MLSS concentration is 12000gm/L, and the effluent quality is tested: COD 32mg/L, BOD 14mg/L, NH4-N 2mg/L，TN 5mg/L。
Example 2
The volume of the box body of the ceramic membrane sewage treatment system is 5 cubic meters, and the flow velocity of water inlet and outlet is 0.5m3The hydraulic retention time is 10 h. 2/3 of the volume of the box body is an aerobic biochemical tank without a ceramic membrane, and the bottom of the tank is provided with an aeration disc. The residual 1/3 space of the box body is used for placing a membrane module for filtering sewage, and the total area of the membrane module is 10m2The diameter of the pore canal of the film layer is 0.6 um. Adding 100kg of activated sludge, and contacting with the surface of the ceramic membranePeriodically adding cane sugar, nitrogenous fertilizer and phosphate fertilizer as nutrients, starting aeration, completing microbial domestication after 30 days, starting a membrane component for filtering sewage, and pumping sewage to be treated, namely the sewage quality: COD 1620mg/L, BOD 780mg/L, NH4N30mg/L, TN 46 mg/L. After the system works stably, the actual hydraulic retention time is 10h, the MLSS concentration is 8500gm/L, and the effluent quality is tested: COD 51mg/L, BOD 26mg/L, NH4-N 7mg/L，TN 13mg/L。
Therefore, the sewage treatment method can reduce the surface pollution of the ceramic membrane for filtering sewage by replacing the activated sludge flocs dispersed in water by utilizing the microbial community attached to the surface of the flat ceramic membrane; moreover, the activity of the microbial community on the surface of the flat ceramic membrane is higher than that of the activated sludge floc which is aerated in water to supply gas nutrients; meanwhile, because the gas stays on the surface of the ceramic membrane and does not escape, the utilization rate of the gas is higher than that of an aeration mode, and the energy consumption can be greatly reduced. Thereby solving the technical problems of the prior art that the gas supply capacity and the degradation efficiency are reduced and the replacement cost of the membrane component is higher due to the membrane component being polluted and blocked by the sludge.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A ceramic membrane sewage treatment device based on domesticated active microorganisms is characterized by comprising:
the reaction tank comprises a water inlet (1) and a water outlet (3);
the device comprises a first membrane component (2), wherein a ceramic membrane of the first membrane component (2) is communicated with a gas storage tank (6) through a gas pipeline, microbial culture gas in the gas storage tank (6) is filled into the ceramic membrane, a biofilm layer is formed in an activated sludge environment, and the biofilm layer covers the surface (12) of the ceramic membrane of the first membrane component (2);
the second membrane component (4), the second membrane component (4) is located at the downstream of the first membrane component (2), and the second membrane component (4) is communicated with the water outlet (3) through a water outlet pipeline.
2. Ceramic membrane sewage treatment plant according to claim 1, wherein an air compressor (5) is arranged on the gas pipeline.
3. A ceramic membrane sewage treatment plant according to claim 2, wherein a pressure regulating valve (7) is further arranged on the gas pipeline, and the pressure regulating valve (7) is positioned on the pipeline between the air compressor (5) and the first membrane module (2).
4. A ceramic membrane sewage treatment plant according to claim 3, wherein said pressure regulating valve (7) is arranged outside said reaction tank.
5. A ceramic membrane sewage treatment method based on domesticated active microorganisms is characterized by comprising the following steps:
domesticating and culturing a preset number of microorganisms on the surface of the first membrane component (2) by using sewage to be treated, activated sludge and microorganism culture gas;
discharging activated sludge;
introducing sewage to be treated into the reaction tank, so that pollutants in the sewage to be treated are degraded under the action of microorganisms on the surface of the first membrane component (2);
and the sewage to be treated after the microbial degradation enters the second membrane component (4), and is discharged after being filtered by the second membrane component (4).
6. A ceramic membrane sewage treatment method according to claim 5, wherein a preset number of microorganisms are acclimatized and cultured on the surface of the first membrane module (2) by using sewage to be treated, activated sludge and microorganism culture gas, and the method specifically comprises:
putting the activated sludge into water in a reaction tank, and stirring to disperse the activated sludge in the water and contact the activated sludge with a ceramic membrane;
and (3) filling microorganism culture gas into the ceramic membrane to enable microorganisms to grow on the surface (12) of the ceramic membrane and form a biofilm layer.
7. A ceramic membrane sewage treatment method according to claim 6, wherein a predetermined number of microorganisms are acclimatized and cultured on the surface of the first membrane module (2) using activated sludge and a microorganism culture gas, and further comprising:
and (2) periodically adding carbon source, nitrogen, phosphorus and the like as nutrients into the first membrane module (2), wherein the acclimation and culture time of the microorganisms is 20-30 days.
8. A ceramic membrane sewage treatment method as claimed in claim 5, wherein the membrane flux of the sewage to be treated is 0.03 to 0.0.06m3Square meter hour.
9. A ceramic membrane sewage treatment method according to claim 5, wherein said microbial culture gas is one of air, pure oxygen, a mixed gas of pure oxygen and air, hydrogen, and hydrogen sulfide.
10. A ceramic membrane sewage treatment method according to claim 5, wherein the microbial culture gas is introduced at a pressure of 0.1-2 MPa.
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| CN202011169788.0A CN112174306B (en) | 2020-10-28 | 2020-10-28 | Ceramic membrane sewage treatment equipment and method based on domesticated active microorganisms |
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| CN202011169788.0A CN112174306B (en) | 2020-10-28 | 2020-10-28 | Ceramic membrane sewage treatment equipment and method based on domesticated active microorganisms |
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| CN112174306A true CN112174306A (en) | 2021-01-05 |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201842696U (en) * | 2010-10-21 | 2011-05-25 | 河北工业大学 | Low-energy-consumption aeration-free membrane bioreactor |
| CN104944572A (en) * | 2015-06-18 | 2015-09-30 | 河海大学 | Ceramic membrane bioreactor and application thereof |
| CN105713827A (en) * | 2014-12-05 | 2016-06-29 | 中国石油化工股份有限公司 | Nitrifying bacterium enrichment culture device and culture method |
| CN105923751A (en) * | 2016-05-13 | 2016-09-07 | 长安大学 | Ceramic membrane and membrane aeration biologic reactor provided with same |
| CN107285467A (en) * | 2017-07-28 | 2017-10-24 | 大连宇都环境技术材料有限公司 | MBBR and MBR integrated technique and equipment for water treatment plant |
| CN206814594U (en) * | 2017-06-16 | 2017-12-29 | 西安佰德石油科技有限公司 | A kind of submerged MBRs ceramic membrane sewage disposal device |
| CN208500509U (en) * | 2018-04-26 | 2019-02-15 | 浙江大学 | A kind of device for strengthening livestock and poultry tail water aerobic ponds treatment effect |
| CN209428360U (en) * | 2018-12-28 | 2019-09-24 | 南京金湖环保科技有限公司 | A kind of MBR automated sewage control system |
| CN110550822A (en) * | 2019-09-09 | 2019-12-10 | 广西碧清源环保投资有限公司 | oily sewage treatment system based on ceramic membrane biological reaction |
| CN210915533U (en) * | 2019-11-13 | 2020-07-03 | 嘉诚环保工程有限公司 | Nitrifying bacteria in-situ enrichment device |
| CN211445222U (en) * | 2019-11-20 | 2020-09-08 | 中科院建筑设计研究院有限公司 | Device for reducing pollution of plate-type ceramic membrane of anaerobic membrane bioreactor |
| CN111825213A (en) * | 2019-04-19 | 2020-10-27 | 香港理工大学 | One-tank type mainstream anaerobic ammonia oxidation fluidized bed membrane bioreactor and sewage treatment method thereof |
-
2020
- 2020-10-28 CN CN202011169788.0A patent/CN112174306B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201842696U (en) * | 2010-10-21 | 2011-05-25 | 河北工业大学 | Low-energy-consumption aeration-free membrane bioreactor |
| CN105713827A (en) * | 2014-12-05 | 2016-06-29 | 中国石油化工股份有限公司 | Nitrifying bacterium enrichment culture device and culture method |
| CN104944572A (en) * | 2015-06-18 | 2015-09-30 | 河海大学 | Ceramic membrane bioreactor and application thereof |
| CN105923751A (en) * | 2016-05-13 | 2016-09-07 | 长安大学 | Ceramic membrane and membrane aeration biologic reactor provided with same |
| CN206814594U (en) * | 2017-06-16 | 2017-12-29 | 西安佰德石油科技有限公司 | A kind of submerged MBRs ceramic membrane sewage disposal device |
| CN107285467A (en) * | 2017-07-28 | 2017-10-24 | 大连宇都环境技术材料有限公司 | MBBR and MBR integrated technique and equipment for water treatment plant |
| CN208500509U (en) * | 2018-04-26 | 2019-02-15 | 浙江大学 | A kind of device for strengthening livestock and poultry tail water aerobic ponds treatment effect |
| CN209428360U (en) * | 2018-12-28 | 2019-09-24 | 南京金湖环保科技有限公司 | A kind of MBR automated sewage control system |
| CN111825213A (en) * | 2019-04-19 | 2020-10-27 | 香港理工大学 | One-tank type mainstream anaerobic ammonia oxidation fluidized bed membrane bioreactor and sewage treatment method thereof |
| CN110550822A (en) * | 2019-09-09 | 2019-12-10 | 广西碧清源环保投资有限公司 | oily sewage treatment system based on ceramic membrane biological reaction |
| CN210915533U (en) * | 2019-11-13 | 2020-07-03 | 嘉诚环保工程有限公司 | Nitrifying bacteria in-situ enrichment device |
| CN211445222U (en) * | 2019-11-20 | 2020-09-08 | 中科院建筑设计研究院有限公司 | Device for reducing pollution of plate-type ceramic membrane of anaerobic membrane bioreactor |
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