CN101234817A - Film carrier foamless oxygen supply biological film reactor and organic waste water treatment method - Google Patents
Film carrier foamless oxygen supply biological film reactor and organic waste water treatment method Download PDFInfo
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- CN101234817A CN101234817A CNA2008100523314A CN200810052331A CN101234817A CN 101234817 A CN101234817 A CN 101234817A CN A2008100523314 A CNA2008100523314 A CN A2008100523314A CN 200810052331 A CN200810052331 A CN 200810052331A CN 101234817 A CN101234817 A CN 101234817A
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- 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 relates to a biomembrane reactor with non-foaming oxygen supply of a membrane carrier and a method for treating organic wastewater, which belongs to a technique for treating wastewater. The biomembrane reactor with non-foaming oxygen supply of the membrane carrier comprises a hollow membrane component of a curtain type. The process of treating wastewater by applying the biomembrane reactor with non-foaming oxygen supply of the membrane carrier comprises the following steps: the hollow membrane component of a curtain type is arranged in a wastewater pond; air is lead in through an inlet pipe; oxygen in the air permeates a hollow fiber membrane of oxygen permeation and enters the biomembrane attached on the hollowing fiber membrane of oxygen permeation; organic wastewater after settled flows through the surface of the biomembrane attached on the hollowing fiber membrane with a certain flow rate; microorganisms on the hollow fiber membrane decompose organic matters, so the content of organic matters in the water is gradually decreased; when the index of the organic matters reaches the requirement of wastewater discharge, the wastewater is discharged through a water outlet. The biomembrane reactor with non-foaming oxygen supply of the membrane carrier has the advantages of high utilization of oxygen, small amount of required aeration, energy conservation, and easy control of transferring efficiency.
Description
Technical field:
The present invention relates to a kind of film carrier foamless oxygen supply biological film reactor and handle the organic waste water method, belong to wastewater processing technology.
Background technology:
The combination of membrane technique and biological water technology has produced three class membrane bioreactors, promptly holds back microorganism and suspended solids membrane bioreactor (MBR), no bubble chamber film aeration and biological reactor (MABR) and spe membrane bio-reactor (EMBR).Aspect treatment of Organic Wastewater, MBR has realized commercialization, but because what adopt is that bubble aeration form is arranged, and oxygen utilization rate is low, and MBR energy consumption height makes its running cost height, range of application is restricted.The MABR sewage disposal technology is a kind of novel process of researching and developing at the deficiency of current MBR, have on this technology theory the transfer efficiency height of oxygen, required aeration rate few, can realize simultaneously that nitrification and denitrification, floor space are little, can handle volatile organic matter, can handle characteristics such as hardly degraded organic substance and operational management be convenient.
At present, MABR also is in the experimental study stage, aspect the selection and use of film, mainly based on symmetrical fine and close tubular fibre and hydrophobic microporous hollow-fibre membranes such as silicon rubber.Though silicon rubber has good oxygen flow ability, but with the made symmetrical fine and close tubular fibre wall thickness of silicone rubber kinds material, air resistance is big, specific surface area is little, bad mechanical strength, and silicon rubber costs an arm and a leg, and the through performance of the oxygen of the symmetrical fine and close tubular fibre made from PMP (poly(4-methyl-1-pentene)) does not improve equally; Though dewatering microporous film has low price and the big advantage of specific surface area, its physics duct makes it not possess O
2/ N
2Selectivity, the microbial film that its appearance is adhered to is very easily destroyed by air penetration, and the hydrophobicity of microporous membrane can become microporous hydrophilic membrane because of cell debris and proteinic deposition on the other hand, so dewatering microporous film and be not suitable for secular use.Therefore, effectively avoid the main drawback of symmetrical dense film and dewatering microporous film, the oxygen that improves hollow-fibre membrane is the developing direction of following MABR film through ability.In addition, MABR does not also form sophisticated technology pattern in application facet.The present invention is exactly a kind of new membrane biofilm reactor researched and developed at the deficiency of current MABR and the method for handling organic waste water.
Summary of the invention:
The method that the purpose of this invention is to provide a kind of film carrier foamless oxygen supply biological film reactor and processing organic waste water thereof.Described film carrier foamless oxygen supply biological film reactor has the coefficient of oxygen utilization height, and energy-conservation characteristics are suitable for large-scale promotion and application.
The present invention is realized by following technical proposals, a kind of film carrier foamless oxygen supply biological film reactor, this reactor comprises: curtain formula hollow fiber film assembly, described curtain formula hollow fiber film assembly connects the parallel rectangular frame that gas inlet pipe and escape pipe constituted respectively by two union levers, it is characterized in that: be communicated with the oxygen flow hollow-fibre membrane that the curtain formula is arranged between two parallel gas service pipess, oxygen flow hollow-fibre membrane film surface attachment the microbial film of handling waste water.
Described oxygen flow hollow-fibre membrane is meant the ultra-thin dense layer surface hollow-fibre membrane that porous material supports; The external diameter of hollow-fibre membrane is between 20～5000 microns, and wall thickness is between 1～1000 micron.
From 5 to 1000 microns of described biomembranous thickness attached to oxygen flow hollow-fibre membrane film surface.
The width of described curtain formula hollow fiber film assembly is 0.05～10 meter, highly is 0.1～5 meter, and the fiber in the curtain formula hollow fiber film assembly can be that monolayer alignment or multilayer curtain formula are arranged.
Utilize film carrier foamless oxygen supply biological film reactor of the present invention to handle the method for organic waste water, it is characterized in that comprising following process:
Film carrier foamless oxygen supply biological film reactor is placed wastewater disposal basin, by the continuous bubbling air of air inlet pipe end, the inner chamber of air admission oxygen flow hollow-fibre membrane is under certain pressure, airborne oxygen sees through the membranous wall of oxygen flow hollow-fibre membrane, and remaining air is discharged by the pipe end of giving vent to anger.The oxygen that sees through enters the microbial film of oxygen flow hollow-fibre membrane film outer wall, biostrome near oxygen flow hollow-fibre membrane film outer wall obtains competent oxygen owing to arriving, can form aerobic zone, this aerobic zone can be removed the reaction of carbonaceous organic material and ammonia nitrogen, biostrome away from oxygen flow hollow-fibre membrane film outer wall, can form the oxygen-starved area, the reaction of nitrate and nitrite nitrogen can be removed in this oxygen-starved area.Meanwhile, the biofilm surface of flowing through and adhering on the oxygen flow hollow-fibre membrane with certain flow rate through the organic waste water of post precipitation, microorganism is to organic decomposition on the process oxygen flow hollow-fibre membrane, organic content reduces gradually in the water, after organic indicator reached the discharge of wastewater requirement, waste water was discharged by water outlet.
The present invention compares with existing industrial membrane bio-reactor, has following advantage:
Because what this film carrier foamless oxygen supply biological film reactor used is bubble-free aeration, the Institute of Micro-biology that oxygen directly is attached on oxygen flow hollow-fibre membrane film surface consumes, the coefficient of oxygen utilization height, required aeration rate is few, energy-conservation, in addition can be according to regulating the transmission speed that air inlet pressure is regulated oxygen, transfer efficiency is easy to control, and operational management is convenient; Because film carrier foamless oxygen supply biological film reactor can be realized the removal of while carbonaceous organic material and nitrogenous compound in single processing unit, so its required floor space is little; Because what film carrier foamless oxygen supply biological film reactor adopted is bubble-free aeration, and its oxygen delivery capacity is more a lot of by force than traditional aeration mode, so it can handle the waste water that contains volatile organic matter, hardly degraded organic substance and high-enriched organics.
Description of drawings
Fig. 1 is a curtain formula hollow fiber film assembly structural representation; Among the figure: 1 is hook, and 2 is inlet pipe, and 3 is the oxygen flow hollow-fibre membrane, and 4 is union lever, and 5 is escape pipe.
Fig. 2 is a curtain formula hollow fiber film assembly structural representation in parallel
Fig. 3 is placed in-line curtain formula hollow fiber film assembly structural representation
Embodiment
Embodiment 1
Processing to nylon compound probability waste water
This waste water composition: COD
CrBe 2200mg/L, pH 7.8, and suspended solids is 160mg/L, 30 ℃ of water temperatures.
The process of handling this waste water with film carrier foamless oxygen supply biological film reactor of the present invention is as follows: will place wastewater disposal basin with the curtain formula hollow fiber film assembly that the compound polyethersulfone porous hollow fiber membrane of polymeric amide dense skin is made, on 3 meters of curtain formula hollow fiber film assembly width, 1.5 meters of height, the every assembly two-layer oxygen flow hollow-fibre membrane is arranged, as Fig. 2, there are 5 curtain formula hollow fiber film assemblies to be arranged in parallel.Waste water is introduced wastewater disposal basin, the active sludge that can handle nylon then is inoculated in the wastewater disposal basin, carry out biomembranous cultivation, culture condition is: the air of air compressor compression is introduced inlet pipe, regulating air inlet pressure is 0.2MPa, waste water flows in wastewater disposal basin with the speed of 0.2m/h, and through 10 days cultivation, it was the microbial film of 80 micron thickness that the outside surface of oxygen flow hollow-fibre membrane has adhered to a layer thickness.Waste water is introduced in the wastewater disposal basin, air inlet pressure 0.1MPa, retention time of sewage 5 days, waste water after treatment, effluent index is: COD
CrBe 45mg/L, suspended solids is 12mg/L.
Processing to sanitary wastewater
The composition of sanitary wastewater: COD
CrBe 400-500mg/L, total nitrogen is about 80mg/L, and pH is about 7.2, and suspended solids is 120mg/L, 20 ℃ of water temperatures;
Place wastewater disposal basin with the curtain formula hollow fiber film assembly of making by the asymmetric porous hollow fiber membrane of poly(4-methyl-1-pentene) dense layer surface shown in Figure 3,1 meter of this 2 meters of curtain formula hollow fiber film assembly width, height, the oxygen flow hollow-fibre membrane haves three layers on every assembly, above-mentioned waste water is handled, and process is as follows:
Biomembranous culturing process: this sanitary wastewater is introduced in the wastewater disposal basin, the active sludge direct inoculation that can handle this sanitary wastewater is in wastewater disposal basin, air inlet pressure is adjusted into 0.2MPa, waste water is with flow velocity sluggish flow in wastewater disposal basin of 0.1m/h, cultivation through 25 days, the outside surface of oxygen flow hollow-fibre membrane has adhered to the microbial film of one deck 300 micron thickness, this microbial film has had tangible subregion, near oxygen flow hollow-fibre membrane that part of owing to can access competent oxygen, formed the aerobic zone that can carry out carbonaceous organic material and ammonia nitrogen oxidation, and corresponding biomembranous skin and organic waste water body have then formed and can carry out denitrifying oxygen-starved area owing to relative anoxic.
Wastewater treatment process: waste water is introduced in the reaction tank, retention time of sewage is 2 days, and the change in concentration of the sanitary wastewater of Chu Liing is as required regulated the pressure of air admission oxygen flow hollow-fibre membrane, intake pressure is between 0.08-0.12MPa, and effluent index is: COD
CrBe 30mg/L, suspended solids is 8mg/L, and total nitrogen is 6mg/L.
To containing the processing of toluene waste water
This waste water composition: COD
CrBe 4000mg/L, pH is 8.1, and suspended solids is 230mg/L, 18 ℃ of water temperatures
Place the waste water reaction pond with the curtain formula hollow fiber film assembly made from the compound polyethersulfone porous hollow fiber membrane of polymeric amide dense skin shown in Figure 2,3 meters of curtain formula hollow fiber film assembly width, 1.5 meters of length, the oxygen flow hollow-fibre membrane is of five storeys on every assembly, above-mentioned waste water is handled, and process is as follows:
Biomembranous culturing process: waste water is introduced wastewater disposal basin, can handle this extraordinary microbial inoculant that contains toluene waste water in the waste water reaction pond, regulating air inlet pressure is 0.2MPa, waste water flows in wastewater disposal basin with the speed of 0.2m/h, through 13 days cultivation, the outside surface of oxygen flow hollow-fibre membrane adhered to the microbial film of one deck 100 micron thickness.
Wastewater treatment process: waste water is introduced in the wastewater disposal basin, and air inlet pressure is adjusted to 0.15MPa, retention time of sewage 4 days, and effluent index after treatment is: COD
CrBe 40mg/L, suspended solids is 15mg/L.
Claims (5)
1. film carrier foamless oxygen supply biological film reactor, this reactor comprises: curtain formula hollow fiber film assembly, described curtain formula hollow fiber film assembly connects the parallel rectangular frame that gas inlet pipe and escape pipe constituted respectively by two union levers, it is characterized in that: be communicated with the oxygen flow hollow-fibre membrane that the curtain formula is arranged between two parallel gas service pipess, oxygen flow hollow-fibre membrane film surface attachment the microbial film of handling waste water.
2. by the described film carrier foamless oxygen supply biological film reactor of claim 1, it is characterized in that: the oxygen flow hollow-fibre membrane is meant the ultra-thin dense layer surface hollow-fibre membrane that porous material supports, the external diameter of hollow-fibre membrane is at 20～5000 microns, and wall thickness is at 1～1000 micron.
3. by the described film carrier foamless oxygen supply biological film reactor of claim 1, it is characterized in that: attached to from 5 to 1000 microns of the biomembranous thickness on oxygen flow hollow-fibre membrane film surface.
4. by the described film carrier foamless oxygen supply biological film reactor of claim 1, it is characterized in that: the width of curtain formula hollow fiber film assembly is 0.05～10 meter, highly is 0.1～5 meter, and the fiber in the membrane module can be that monolayer alignment or multilayer curtain formula are arranged.
5. method that adopts the described film carrier foamless oxygen supply biological film reactor of claim 1 to handle organic waste water is characterized in that comprising following process:
Film carrier foamless oxygen supply biological film reactor is placed wastewater disposal basin, by the continuous bubbling air of air inlet pipe end, the inner chamber of air admission oxygen flow hollow-fibre membrane, under certain pressure, airborne oxygen sees through the membranous wall of oxygen flow hollow-fibre membrane, remaining air is discharged by the pipe end of giving vent to anger, the oxygen that sees through enters the microbial film of oxygen flow hollow-fibre membrane film outer wall, biostrome near oxygen flow hollow-fibre membrane film outer wall obtains competent oxygen owing to arriving, so can form aerobic zone, this aerobic zone can be removed the reaction of carbonaceous organic material and ammonia nitrogen, biostrome away from oxygen flow hollow-fibre membrane film outer wall, can form the oxygen-starved area, the reaction of nitrate and nitrite nitrogen can be removed in this oxygen-starved area; Meanwhile, the biofilm surface of flowing through and adhering on the hollow-fibre membrane with certain flow rate through the organic waste water of post precipitation, microorganism is to organic decomposition on the process hollow-fibre membrane, organic content reduces gradually in the water, after organic indicator reached the discharge of wastewater requirement, waste water was discharged by water outlet.
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| CNA2008100523314A CN101234817A (en) | 2008-02-27 | 2008-02-27 | Film carrier foamless oxygen supply biological film reactor and organic waste water treatment method |
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| CNA2008100523314A CN101234817A (en) | 2008-02-27 | 2008-02-27 | Film carrier foamless oxygen supply biological film reactor and organic waste water treatment method |
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Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101831382A (en) * | 2010-04-09 | 2010-09-15 | 中国科学院广州能源研究所 | Bubble-free air supply and solid-liquid separation integrated membrane biomembrane reactor taking indissoluble gases as fermentation raw materials |
| CN102826652A (en) * | 2012-01-13 | 2012-12-19 | 北京海思清膜科技有限公司 | Inner-aeration hollow fiber film carrier module and its application method |
| CN103864212A (en) * | 2014-03-18 | 2014-06-18 | 强成诚 | Micro-aeration filler biological membrane type wastewater treatment device |
| CN104748990A (en) * | 2014-12-17 | 2015-07-01 | 中国航天员科研训练中心 | Bubble-free oxygen supply and water-discharging membrane component performance test research apparatus |
| CN104761046A (en) * | 2014-01-06 | 2015-07-08 | 天津海之凰科技有限公司 | Floating EHBR river lake water purification device system and method thereof |
| CN104843856A (en) * | 2015-04-23 | 2015-08-19 | 四川和鼎环保工程有限责任公司 | Biological method-based sewage treatment system |
| CN104876342A (en) * | 2015-04-23 | 2015-09-02 | 四川和鼎环保工程有限责任公司 | Device beneficial to control of aeration parameters |
| CN104876328A (en) * | 2015-04-23 | 2015-09-02 | 四川和鼎环保工程有限责任公司 | Sewage system beneficial to improvement of treatment efficiency |
| WO2016184996A1 (en) * | 2015-05-19 | 2016-11-24 | Oxymem Limited | Membrane connector to promote mass transfer in a membrane aerated biofilm reactor (mabr) |
| CN106957110A (en) * | 2017-05-26 | 2017-07-18 | 安徽华骐环保科技股份有限公司 | A kind of new membrane bubble is oxygenated biomembrane reaction component |
| CN107018659A (en) * | 2014-03-20 | 2017-08-04 | 通用电气公司 | Wastewater treatment with primary treatment and MBR or MABR IFAS reactors |
| CN107162177A (en) * | 2017-06-09 | 2017-09-15 | 天津碧水源膜材料有限公司 | Ventilated membrane, diaphragm, reactor and sewage water filtration technique |
| CN107585865A (en) * | 2017-11-02 | 2018-01-16 | 安徽华骐环保科技股份有限公司 | A kind of new microbubble is oxygenated biological film wire and method for treating water |
| CN107857356A (en) * | 2017-12-12 | 2018-03-30 | 安徽华骐环保科技股份有限公司 | It is a kind of to be oxygenated sewage-treating reactor and processing method without bubble film |
| CN107930409A (en) * | 2017-12-25 | 2018-04-20 | 天津膜天膜科技股份有限公司 | A kind of multiporous biological membrane carrier and its biological membrane assembly |
| CN109485146A (en) * | 2019-01-21 | 2019-03-19 | 天津海之凰环境科技有限公司 | A kind of integral type EHBR membrane module |
| CN110054298A (en) * | 2019-05-24 | 2019-07-26 | 嘉兴里仁环保科技股份有限公司 | A kind of flat MABR oxygen flow membrane module |
| WO2019163426A1 (en) * | 2018-02-20 | 2019-08-29 | 栗田工業株式会社 | Aerobic biological treatment device |
| CN110713253A (en) * | 2019-10-11 | 2020-01-21 | 湖南叶之能科技有限公司 | Bioreactor membrane and preparation process |
| CN112499833A (en) * | 2020-11-26 | 2021-03-16 | 北京环丁环保大数据研究院 | Freely combined module assembled distributed sewage treatment device |
| CN113041846A (en) * | 2021-01-28 | 2021-06-29 | 哈尔滨工业大学（深圳） | Composite membrane yarn and preparation method thereof |
| CN113474304A (en) * | 2019-01-24 | 2021-10-01 | 福伦斯水产品和创新有限公司 | Method for treating waste activated sludge by using membrane aeration biomembrane reactor |
| CN113735253A (en) * | 2020-11-06 | 2021-12-03 | 深圳市宇思环保科技有限公司 | Filler, water treatment device and water treatment method |
| WO2022094977A1 (en) * | 2020-11-06 | 2022-05-12 | 深圳市宇思环保科技有限公司 | Filler, and water treatment device and method |
| CN116282492A (en) * | 2023-03-21 | 2023-06-23 | 广东工业大学 | Skid-mounted aquaculture tail water treatment system based on MABR and MBR coupling |
| US11724947B2 (en) | 2013-02-22 | 2023-08-15 | Bl Technologies, Inc. | Membrane assembly for supporting a biofilm |
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2008
- 2008-02-27 CN CNA2008100523314A patent/CN101234817A/en active Pending
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| CN101831382A (en) * | 2010-04-09 | 2010-09-15 | 中国科学院广州能源研究所 | Bubble-free air supply and solid-liquid separation integrated membrane biomembrane reactor taking indissoluble gases as fermentation raw materials |
| CN102826652A (en) * | 2012-01-13 | 2012-12-19 | 北京海思清膜科技有限公司 | Inner-aeration hollow fiber film carrier module and its application method |
| US11724947B2 (en) | 2013-02-22 | 2023-08-15 | Bl Technologies, Inc. | Membrane assembly for supporting a biofilm |
| CN104761046A (en) * | 2014-01-06 | 2015-07-08 | 天津海之凰科技有限公司 | Floating EHBR river lake water purification device system and method thereof |
| CN103864212A (en) * | 2014-03-18 | 2014-06-18 | 强成诚 | Micro-aeration filler biological membrane type wastewater treatment device |
| US11850554B2 (en) | 2014-03-20 | 2023-12-26 | Bl Technologies, Inc. | Wastewater treatment with primary treatment and MBR or MABR-IFAS reactor |
| CN107018659A (en) * | 2014-03-20 | 2017-08-04 | 通用电气公司 | Wastewater treatment with primary treatment and MBR or MABR IFAS reactors |
| CN104748990A (en) * | 2014-12-17 | 2015-07-01 | 中国航天员科研训练中心 | Bubble-free oxygen supply and water-discharging membrane component performance test research apparatus |
| CN104843856A (en) * | 2015-04-23 | 2015-08-19 | 四川和鼎环保工程有限责任公司 | Biological method-based sewage treatment system |
| CN104876342A (en) * | 2015-04-23 | 2015-09-02 | 四川和鼎环保工程有限责任公司 | Device beneficial to control of aeration parameters |
| CN104876328A (en) * | 2015-04-23 | 2015-09-02 | 四川和鼎环保工程有限责任公司 | Sewage system beneficial to improvement of treatment efficiency |
| WO2016184996A1 (en) * | 2015-05-19 | 2016-11-24 | Oxymem Limited | Membrane connector to promote mass transfer in a membrane aerated biofilm reactor (mabr) |
| CN106957110A (en) * | 2017-05-26 | 2017-07-18 | 安徽华骐环保科技股份有限公司 | A kind of new membrane bubble is oxygenated biomembrane reaction component |
| CN107162177A (en) * | 2017-06-09 | 2017-09-15 | 天津碧水源膜材料有限公司 | Ventilated membrane, diaphragm, reactor and sewage water filtration technique |
| CN107585865A (en) * | 2017-11-02 | 2018-01-16 | 安徽华骐环保科技股份有限公司 | A kind of new microbubble is oxygenated biological film wire and method for treating water |
| CN107857356A (en) * | 2017-12-12 | 2018-03-30 | 安徽华骐环保科技股份有限公司 | It is a kind of to be oxygenated sewage-treating reactor and processing method without bubble film |
| CN107857356B (en) * | 2017-12-12 | 2023-11-24 | 安徽华骐环保科技股份有限公司 | Bubble-free membrane oxygenated sewage treatment reactor and treatment method |
| CN107930409A (en) * | 2017-12-25 | 2018-04-20 | 天津膜天膜科技股份有限公司 | A kind of multiporous biological membrane carrier and its biological membrane assembly |
| WO2019163426A1 (en) * | 2018-02-20 | 2019-08-29 | 栗田工業株式会社 | Aerobic biological treatment device |
| CN109485146A (en) * | 2019-01-21 | 2019-03-19 | 天津海之凰环境科技有限公司 | A kind of integral type EHBR membrane module |
| CN113474304A (en) * | 2019-01-24 | 2021-10-01 | 福伦斯水产品和创新有限公司 | Method for treating waste activated sludge by using membrane aeration biomembrane reactor |
| CN110054298A (en) * | 2019-05-24 | 2019-07-26 | 嘉兴里仁环保科技股份有限公司 | A kind of flat MABR oxygen flow membrane module |
| CN110713253A (en) * | 2019-10-11 | 2020-01-21 | 湖南叶之能科技有限公司 | Bioreactor membrane and preparation process |
| CN113735253A (en) * | 2020-11-06 | 2021-12-03 | 深圳市宇思环保科技有限公司 | Filler, water treatment device and water treatment method |
| WO2022094977A1 (en) * | 2020-11-06 | 2022-05-12 | 深圳市宇思环保科技有限公司 | Filler, and water treatment device and method |
| CN112499833A (en) * | 2020-11-26 | 2021-03-16 | 北京环丁环保大数据研究院 | Freely combined module assembled distributed sewage treatment device |
| CN113041846A (en) * | 2021-01-28 | 2021-06-29 | 哈尔滨工业大学（深圳） | Composite membrane yarn and preparation method thereof |
| CN116282492A (en) * | 2023-03-21 | 2023-06-23 | 广东工业大学 | Skid-mounted aquaculture tail water treatment system based on MABR and MBR coupling |
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