CN101580328A - Method and device for treating micro-polluted surface water - Google Patents

Method and device for treating micro-polluted surface water Download PDF

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Publication number
CN101580328A
CN101580328A CNA2009100872095A CN200910087209A CN101580328A CN 101580328 A CN101580328 A CN 101580328A CN A2009100872095 A CNA2009100872095 A CN A2009100872095A CN 200910087209 A CN200910087209 A CN 200910087209A CN 101580328 A CN101580328 A CN 101580328A
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China
Prior art keywords
water
biological filter
basin
coagulation
polluted surface
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CNA2009100872095A
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Chinese (zh)
Inventor
文湘华
文剑平
黄霞
崔志广
杨宁宁
俞开昌
关晶
梁辉
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Tsinghua University
Beijing Originwater Technology Co Ltd
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Tsinghua University
Beijing Originwater Technology Co Ltd
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Application filed by Tsinghua University, Beijing Originwater Technology Co Ltd filed Critical Tsinghua University
Priority to CNA2009100872095A priority Critical patent/CN101580328A/en
Publication of CN101580328A publication Critical patent/CN101580328A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Abstract

The invention provides a method and a device for treating micro-polluted surface water. The method comprises the following steps: a biological filter, coagulation sedimentation and ultrafiltration are combined; raw water enters the biological filter; microorganisms degrade the ammonia nitrogen and partial low molecular weight organic matters in the inlet water; organic matters which are hard to be degraded by the microorganisms, such as humus, are removed from the outlet water through coagulation sedimentation; finally organic matters, most turbidity, microorganisms and partial viruses are further removed through an external ultrafiltration membrane module; the ultrafiltered outlet water is high quality drinking water after being disinfected and can be transported to users after chlorine supplement and ozonization; ultrafiltered concentrated solution reflows to a coagulation sedimentation pond and solid-liquid separation is realized by discharge of sludge from the sedimentation pond; the ultrafiltration membrane module is backwashed by a membrane backwashing system periodically during ultrafiltration operation. The invention organically combines biodegradation, coagulation and physical interception of ultrafiltration, has good effect on removing ammonia nitrogen, organic matters and the like in the micro-polluted surface water and is a novel drinking water deep purification process.

Description

A kind of method and device of handling micro-polluted surface water
Technical field
The present invention relates to a kind of water technology and equipment, particularly a kind of processing method and device with biological filter-coagulating sedimentation-ultra-filtration membrane combination process processing micro-polluted surface water belong to the drinking water deep purification processing technology field.
Background technology
In the face of the variation of source quality, conventional drinking water treatment technology has seemed unable to do what one wishes.Experimental study both domestic and external and actual production result show, contaminated water source water can only be removed in the water 20%~30% organism through coagulation, precipitation and the filtration process of routine, and, be unfavorable for destroying colloidal stability and make common process raw water turbidity removal effect obviously descend (only being 50%~60%) because dissolved organic matter exists.Improve treatment effect with the mode that increases coagulant charging quantity, cost of water treatment is risen, and may make underwater gold belong to ionic concn to increase, be unfavorable for that also the resident's is healthy.The ubiquitous ammonia nitrogen problem conventional processing that exceeds standard can not effectively solve in the surface pond.At present domestic most of water factories adopt the method for breakpoint chlorination to control ammonia nitrogen concentration in the output water, and obtaining necessary active chlorine residue, but consequent a large amount of Organohalogen compounds cause the water quality toxicological safety to descend again.
New pathogenic protozoon-Lan Shi giardia lamblia and Cryptosporidium (" two worms ") are found simultaneously 20 end of the centurys in the water, algal bloom and algae toxin occur, smelt great microbial safety problems such as the biologically stable of flavor, water, harmful hydrobiont-Cyclop and red worm, existing conventional coagulating sedimentation filter-sterilized technology can't solve effectively, remains to be developed safer more effective urban drinking water purification process under this background.
Being core with the membrane technique has caused people's extensive concern as a new technology of Micro-polluted Water, is described as 21 century one of the most promising water technology.Particulate matter in the effective trap water of ultra-filtration membrane energy is reduced to below the 0.1NTU delivery turbidity, and can removes larger molecular organics, and microorganisms such as most algae, water flea, red worm, two worms, bacterium even virus.
Relate to the uf processing micro-polluted water as the patent of tap water as " ultra-filtration membrane coagulation/adsorption/bioreactor integrating advanced water degree treatment process and device thereof " 200810063897.7, adopted incorporate device situation, saved floor space, exist simultaneously the lower problem of operating flux with; Patent " ultrafiltration-jet supplementing ozone-ultraviolet secondary excitation produces the technology and the technology of free radical purifying slightly polluted water source water " 02128903.4, dissolved oxygen in uv sterilisation in the secondary excitation water and ozone, generation has the free radical of strong oxidizing property, can kill various pathogenic agent and remove suspended substance etc., but can not remove the ammonia nitrogen in the micro-polluted surface water; " at the built-up type ultrafiltrationmembrane process treatment unit of drinking water treatment " 200420109820.6 utility models are disinfection way and ultrafiltration Combination Optimized, do not relate to Biological Pretreatment, can not remove ammonia nitrogen in the micro-polluted surface water etc.
The trend that drinking water standard improves gradually in the face of the water source runs down, how ultrafiltration membrane technique is applied in the drinking water treatment engineering, guarantee the stability of high-quality, security, stability and the engineering operation of treat effluent, and be problem demanding prompt solution on the present ultra-filtration membrane drinking water treatment technology.
Summary of the invention
The objective of the invention is at the micro-polluted surface water water source, research and develop a kind of drinking water deep treatment process that can significantly improve effluent quality, promptly adopt the combination process of biological filter-coagulating sedimentation-ultrafiltration membrane treatment micro-polluted water.
Technical scheme of the present invention is achieved in that
A kind of processing method of handling micro-polluted surface water is characterized in that this method comprises the steps:
1) micro-polluted surface water enters the biological filter after filtering, and the hydraulic detention time in the biological filter is 10~60min, and gas-water ratio was 0.5: 1~2: 1 scopes; Described biological filter is a BAF, and regularly back flushing is carried out in the biological filter, to keep the biomass in the biological filter;
2) the biological filter water outlet relies on gravity to flow into coagulation basin by pipeline and valve, adds coagulating agent by medicine system in coagulation basin, arrives settling tank behind coagulation, carries out solid-liquid separation in settling tank;
3) the settling tank water outlet enters hyperfiltration membrane assembly by ultrafiltrate pump and filters, and ultrafiltration membrane pressure is in 0.01MPa~0.15Mpa scope, and membrane flux is at 20L/m 2.h~100L/m 2.h scope;
4) water outlet after the filtration enters clean water basin, is transported to the user as tap water after sterilizing.
The material that adds of biological filter of the present invention adopts zeolite or haydite.Described coagulating agent is one or more the mixing in polymerize aluminum chloride, iron(ic) chloride, Tai-Ace S 150 and the PAFS.
A kind of device of handling micro-polluted surface water provided by the invention is characterized in that: described device comprises former pond 1, raw water filtration device 2, biological filter 3, coagulation basin 4, settling tank 5, intermediate pool 15, hyperfiltration membrane assembly 6 and clean water basin 16; Between described former pond and biological filter, be provided with raw water pump 7; Between biological filter and coagulation basin, be connected with valve by pipeline; Coagulation basin, settling tank and intermediate pool are connected by pipeline and valve respectively; Be provided with ultrafiltration intake pump 11 between intermediate pool and the supermembrane assembly; Hyperfiltration membrane assembly is connected with clean water basin 16 with valve by pipeline; Be provided with blast aeration system and biological filter back-purge system in the bottom of biological filter; Be provided with medicine system 8 in described coagulation basin outside, in coagulation basin, be provided with whipping appts 14; Described hyperfiltration membrane assembly outside is provided with the hyperfiltration reverse-rinsing system.
Settling tank described in the said apparatus adopts tube settler or inclined-plate clarifying basin.Described hyperfiltration membrane assembly adopts external placed type, and mould material is polyvinylidene difluoride (PVDF) or polyvinyl chloride, and the fenestra aperture is at 0.01~0.1 micron.
The present invention has the following advantages: generally be subjected to the pollution of organism and ammonia nitrogen at drinking water source, coagulating sedimentation and the ultrafiltration of biological treatment with routine organically combined, remove ammonia nitrogen and part small organic molecule by biological treatment, coagulating sedimentation is removed in the part, larger molecular organics, at last by the efficient crown_interception of ultra-filtration membrane, remove particulate matter and microorganism, make its water outlet reach the drink water standard.The present invention adopts the external placed type hyperfiltration membrane assembly, effectively raises membrane flux, has reduced the usable floor area of ultra-filtration membrane, and assembly is convenient to change, and has reduced construction costs and working cost.Adopt the external membrane assembly further to reduce the leakage of microorganism and particulate matter simultaneously.Concentrated solution is back to coagulative precipitation tank in the hyperfiltration membrane assembly of the present invention, carries out solid-liquid separation in coagulative precipitation tank, has further improved the utilization ratio of water.
Description of drawings
Fig. 1 is for being a kind of structure and process flow sheet of handling the micro-polluted surface water device provided by the invention.
Among the figure: the former pond of 1-; 2-raw water filtration device; The 3-biological filter; The 4-coagulation basin; The 5-settling tank; The 6-hyperfiltration membrane assembly; The 7-raw water pump; The 8-medicine system; The 9-blower fan; 10-biological filter backwashing pump; 11-ultrafiltration intake pump; 12-backwash air compressor; 13-hyperfiltration reverse-rinsing pump; The 14-whipping appts; The 15-intermediate pool; The 16-clean water basin.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is a kind of structure and process flow sheet of handling the micro-polluted surface water device provided by the invention, and this device comprises former pond 1, raw water filtration device 2, biological filter 3, coagulation basin 4, settling tank 5, intermediate pool 15, hyperfiltration membrane assembly 6 and clean water basin 16; Between described former pond and biological filter, be provided with raw water pump 7; Between biological filter and coagulation basin, be connected with valve by pipeline; Coagulation basin, settling tank and intermediate pool are connected by pipeline and valve respectively; Be provided with ultrafiltration intake pump 11 between intermediate pool and the supermembrane assembly; Hyperfiltration membrane assembly is connected with clean water basin 16 with valve by pipeline; Be provided with blast aeration system and biological filter back-purge system in the bottom of biological filter; Be provided with medicine system 8 in described coagulation basin outside, in coagulation basin, be provided with whipping appts 14; Described hyperfiltration membrane assembly outside is provided with super hyperfiltration reverse-rinsing system.
Its concrete technology body flow process is: pending former water comprises that the lower lake of turbidity, reservoir water and the rivers water after predefecation is handled etc. in former pond 1, arrive biological filter 3 by raw water pump 7 through filter 2; The hydraulic detention time of biological filter is in 10~60min scope, and ammonia nitrogen and organism be 3 degradeds in the biological filter.The biological filter is a BAF, and the material that adds of biological filter adopts zeolite or haydite; By blower fan 9 is biological filter 3 air feed, and gas-water ratio is 0.5: 1~2: 1 scopes, to satisfy the microorganism oxygen requirement.And regularly back flushing is carried out in the biological filter, and drawing water from clean water basin 16 by biological filter backwashing pump 10 and squeeze into the biological filter 3 from the bottom, the pressurized air that backwash air compressor 12 provides enters from the bottom, biological filter, and back flushing is carried out in the biological filter; The backwash water outlet is discharged system by solenoid control, and magnetic valve and backwashing pump 10 are synchronous; Be provided with mud discharging device in the bottom, biological filter simultaneously, regularly to the biological filter spoil disposal.The water outlet of biological filter 3 arrives coagulation basin 4, adds coagulating agent by medicine system 8 in coagulation basin, and coagulating agent can be used for one or more of coagulating agent that tap water produces for polymerize aluminum chloride, iron(ic) chloride, Tai-Ace S 150, PAFS or other.In coagulation basin 4, flow automatically in swash plate (or inclined tube) settling tank 5 after stirring by 14 pairs of mixed solutions of whipping appts, behind coagulating sedimentation, can remove medium molecule and macromolecular organism, in settling tank, carry out solid-liquid separation, mud is controlled regular discharge system through pipeline by valve in the settling tank, and supernatant liquor flows automatically in the intermediate pool 15; Through ultrafiltration intake pump 11 from middle pond 15, aspirate the pressurization after in hyperfiltration membrane assembly 6, the ultra-filtration membrane material can be polyvinylidene difluoride (PVDF) or polyvinyl chloride or other ultra-filtration membranes, the aperture should be in 0.01 micron~0.1 micrometer range, the form of ultra-filtration membrane can be tubular fibre formula or roller shutter type, described hyperfiltration membrane assembly adopts external placed type, control ultrafiltration membrane pressures in 0.01MPa~0.15MPa scope by hyperfiltration membrane assembly 11, membrane flux is in 20L/m2.h~100L/m2.h scope, thereby ultrafiltration and concentration liquid is back to coagulation basin and makes formation cross-flow in the hyperfiltration membrane assembly, through settling tank carry out solid-liquid separation or during by the ultra-filtration membrane backwash water outlet behind coagulating sedimentation, carry out solid-liquid separation, for guaranteeing that membrane flux regularly carries out back flushing to hyperfiltration membrane assembly, regularly from clean water basin, draw water and squeeze in the hyperfiltration membrane assembly 6 by hyperfiltration reverse-rinsing pump 13, simultaneously provide backwash gas for hyperfiltration membrane assembly, in hyperfiltration membrane assembly 6, form air-water backwashing by backwash air compressor 12.Close ultrafiltration water inlet and ultrafiltration water outlet and return valve during backwash, open backwash water inlet, backwash water outlet and backwash air intake valve.The backwash cycle is determined according to ultrafiltration membrane pressure and membrane flux.The ultra-filtration membrane water outlet can be transported to the user to clean water basin 16 after sterilization.
Lift a specific embodiment below
Embodiment 1: pending former water is lake water.Draw water from former pond by raw water pump and to enter the biological filter through the video disc strainer, 2~3 millimeters zeolite is adopted in the biological filter, hydraulic detention time in the biological filter is 30min, gas-water ratio is 2: 1, its water outlet enters coagulative precipitation tank, in coagulative precipitation tank, press 6mg/L by medicine system and add polymerize aluminum chloride, coagulation entered inclined-plate clarifying basin after 5 minutes, sedimentation 30min in inclined-plate clarifying basin, supernatant liquor enters intermediate pool, squeezed in the hyperfiltration membrane assembly by ultrafiltrate pump suction pressurization, the ultra-filtration membrane aperture is 0.03 micron, and material is the hyperfiltration membrane assembly of polyvinylidene difluoride (PVDF) external placed type.Flux is 20L/m 2.h, pressure changes between 0.05~0.07Mpa.Filter 23 0min, backwash 1min30s, the hyperfiltration membrane assembly water outlet enters in the clean water basin, can be transported to the user after carrying out disinfection in clean water basin.Inlet and outlet water water quality is as shown in table 1.
Table 1
Embodiment 2:
Pending former water is river.Draw water from former pond by raw water pump and to enter the biological filter through the video disc strainer, 2~3 millimeters zeolite is adopted in the biological filter, hydraulic detention time in the biological filter is 10min, gas-water ratio is 0.5: 1, its water outlet enters coagulative precipitation tank, in coagulative precipitation tank, press 4mg/L by medicine system and add Tai-Ace S 150, coagulation entered inclined-plate clarifying basin after 5 minutes, sedimentation 30min in inclined-plate clarifying basin, supernatant liquor enters intermediate pool, squeezed in the hyperfiltration membrane assembly by ultrafiltrate pump suction pressurization, the ultra-filtration membrane aperture is 0.1 micron, and material is the hyperfiltration membrane assembly of polyvinylidene difluoride (PVDF) external placed type.Flux is 100L/m 2.h, pressure changes between 0.12~0.15Mpa.Filter 23 0min, backwash 1min30s, the hyperfiltration membrane assembly water outlet enters in the clean water basin, can be transported to the user after carrying out disinfection in clean water basin.Inlet and outlet water water quality is as shown in table 2.
Table 2

Claims (6)

1. a processing method of handling micro-polluted surface water is characterized in that this method comprises the steps:
1) micro-polluted surface water enters the biological filter after filtering, and the hydraulic detention time in the biological filter is 10~60min, and gas-water ratio was 0.5: 1~2: 1 scopes; Described biological filter is a BAF, and regularly back flushing is carried out in the biological filter, to keep the biomass in the biological filter;
2) the biological filter water outlet relies on gravity to flow into coagulation basin by pipeline and valve, adds coagulating agent by medicine system in coagulation basin, arrives settling tank behind coagulation, carries out solid-liquid separation in settling tank;
3) the settling tank water outlet enters hyperfiltration membrane assembly by ultrafiltrate pump and filters, and ultrafiltration membrane pressure is in 0.01MPa~0.15MPa scope, and membrane flux is at 20L/m 2.h~100L/m 2.h scope;
4) water outlet after the filtration enters clean water basin, is transported to the user as tap water after sterilizing.
2. according to the described a kind of processing method of handling micro-polluted surface water of claim 1, it is characterized in that: the material that adds of biological filter adopts zeolite or haydite.
3. according to the described a kind of processing method of handling micro-polluted surface water of claim 1, it is characterized in that: step 2) described in coagulating agent be one or more mixing in polymerize aluminum chloride, iron(ic) chloride, Tai-Ace S 150 and the PAFS.
4. implement a kind of device of handling micro-polluted surface water of method according to claim 1, it is characterized in that: described device comprises former pond (1), raw water filtration device (2), biological filter (3), coagulation basin (4), settling tank (5), intermediate pool (15), hyperfiltration membrane assembly (6) and clean water basin (16); Between described former pond and biological filter, be provided with raw water pump (7); Between biological filter and coagulation basin, be connected with valve by pipeline; Coagulation basin, settling tank and intermediate pool are connected by pipeline and valve respectively; Be provided with ultrafiltration intake pump (11) between intermediate pool and the supermembrane assembly; Hyperfiltration membrane assembly is connected with clean water basin (16) with valve by pipeline; Be provided with blast aeration system and biological filter back-purge system in the bottom of biological filter; Be provided with medicine system (8) in described coagulation basin outside, in coagulation basin, be provided with whipping appts (14); Described hyperfiltration membrane assembly outside is provided with super hyperfiltration reverse-rinsing system.
5. a kind of device of handling micro-polluted surface water according to claim 3 is characterized in that: described settling tank adopts tube settler or inclined-plate clarifying basin.
6. according to right 3 described a kind of devices of handling micro-polluted surface water, it is characterized in that: described hyperfiltration membrane assembly adopts external placed type, and mould material is polyvinylidene difluoride (PVDF) or polyvinyl chloride, and the fenestra aperture is at 0.01~0.1 micron.
CNA2009100872095A 2009-06-19 2009-06-19 Method and device for treating micro-polluted surface water Pending CN101580328A (en)

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101798157A (en) * 2010-03-09 2010-08-11 上海交通大学 Combined purification method of drinking water
CN101891337A (en) * 2010-06-25 2010-11-24 北京伊普国际水务有限公司 Treating system and method for treating surface water worse than Grade V into drinking water
CN101948218A (en) * 2010-09-08 2011-01-19 清华大学 Combined method and device of pretreatment and immersed ultrafiltration membrane process for drinking water in mountainous areas
CN101993163A (en) * 2010-10-14 2011-03-30 深圳市深港产学研环保工程技术股份有限公司 Device and method for treating water of micro-polluted water source
CN102092899A (en) * 2010-12-17 2011-06-15 清华大学 System and method for removing natural organic substances and odor-induced substances in micro polluted water
CN102249491A (en) * 2011-06-16 2011-11-23 北京城市排水集团有限责任公司 Deep treatment device and process for secondary treatment effluent of urban sewage plant
CN102329022A (en) * 2011-09-02 2012-01-25 国电龙源南京膜技术有限公司 Drinking water treatment device based on ultrafiltration device
CN102633409A (en) * 2012-04-26 2012-08-15 复旦大学 Technological method for controlling disinfection by-product and pathogenic microorganism risk of drinking water
CN102745863A (en) * 2012-07-04 2012-10-24 哈尔滨工业大学 High efficiency fluidization upward flow multilayer composite filter material biological filter tank coupled with ozonation and water treatment method thereof
CN104230103A (en) * 2014-09-10 2014-12-24 上海应用技术学院 System used for removing natural organic matters and trace pesticides in slightly polluted water
CN105565405A (en) * 2016-02-26 2016-05-11 徐州工程学院 Vertical type rapid water purifying device and water purifying method thereof
CN106007060A (en) * 2016-06-22 2016-10-12 江苏新纪元环保有限公司 Original ecological water treatment process and treatment system adopting same
CN109179880A (en) * 2018-09-28 2019-01-11 山东揵大环保技术有限公司 A kind of purification method for treating micro-polluted drinking water
CN110078262A (en) * 2019-05-20 2019-08-02 南京师范大学 A kind of integrated reactor and its minimizing technology removing traces of antibiotic in combined pollution surface water
CN112093996A (en) * 2020-09-28 2020-12-18 中国科学院生态环境研究中心 Constructed wetland-coagulation combined pretreatment ultrafiltration water supply treatment system and water treatment method

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101798157A (en) * 2010-03-09 2010-08-11 上海交通大学 Combined purification method of drinking water
CN101891337B (en) * 2010-06-25 2012-09-05 北京伊普国际水务有限公司 Treating system and method for treating surface water worse than Grade V into drinking water
CN101891337A (en) * 2010-06-25 2010-11-24 北京伊普国际水务有限公司 Treating system and method for treating surface water worse than Grade V into drinking water
CN101948218A (en) * 2010-09-08 2011-01-19 清华大学 Combined method and device of pretreatment and immersed ultrafiltration membrane process for drinking water in mountainous areas
CN101993163A (en) * 2010-10-14 2011-03-30 深圳市深港产学研环保工程技术股份有限公司 Device and method for treating water of micro-polluted water source
CN102092899A (en) * 2010-12-17 2011-06-15 清华大学 System and method for removing natural organic substances and odor-induced substances in micro polluted water
CN102092899B (en) * 2010-12-17 2012-09-05 清华大学 System and method for removing natural organic substances and odor-induced substances in micro polluted water
CN102249491A (en) * 2011-06-16 2011-11-23 北京城市排水集团有限责任公司 Deep treatment device and process for secondary treatment effluent of urban sewage plant
CN102329022A (en) * 2011-09-02 2012-01-25 国电龙源南京膜技术有限公司 Drinking water treatment device based on ultrafiltration device
CN102633409A (en) * 2012-04-26 2012-08-15 复旦大学 Technological method for controlling disinfection by-product and pathogenic microorganism risk of drinking water
CN102745863A (en) * 2012-07-04 2012-10-24 哈尔滨工业大学 High efficiency fluidization upward flow multilayer composite filter material biological filter tank coupled with ozonation and water treatment method thereof
CN104230103A (en) * 2014-09-10 2014-12-24 上海应用技术学院 System used for removing natural organic matters and trace pesticides in slightly polluted water
CN105565405A (en) * 2016-02-26 2016-05-11 徐州工程学院 Vertical type rapid water purifying device and water purifying method thereof
CN105565405B (en) * 2016-02-26 2018-01-19 徐州工程学院 A kind of vertical Quick purifying device and its process for purifying water
CN106007060A (en) * 2016-06-22 2016-10-12 江苏新纪元环保有限公司 Original ecological water treatment process and treatment system adopting same
CN109179880A (en) * 2018-09-28 2019-01-11 山东揵大环保技术有限公司 A kind of purification method for treating micro-polluted drinking water
CN110078262A (en) * 2019-05-20 2019-08-02 南京师范大学 A kind of integrated reactor and its minimizing technology removing traces of antibiotic in combined pollution surface water
CN110078262B (en) * 2019-05-20 2022-07-12 南京师范大学 Integrated reactor for removing trace antibiotics in composite polluted surface water and removing method thereof
CN112093996A (en) * 2020-09-28 2020-12-18 中国科学院生态环境研究中心 Constructed wetland-coagulation combined pretreatment ultrafiltration water supply treatment system and water treatment method

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Open date: 20091118