CN101580328A - Method and device for treating micro-polluted surface water - Google Patents
Method and device for treating micro-polluted surface water Download PDFInfo
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- 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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- 238000000034 method Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 89
- 239000012528 membrane Substances 0.000 claims abstract description 60
- 238000005345 coagulation Methods 0.000 claims abstract description 34
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 34
- 230000015271 coagulation Effects 0.000 claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000000926 separation method Methods 0.000 claims abstract description 7
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 10
- 239000003814 drug Substances 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 9
- 230000004907 flux Effects 0.000 claims description 9
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 8
- 239000000701 coagulant Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910021536 Zeolite Inorganic materials 0.000 claims description 5
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 5
- 238000011010 flushing procedure Methods 0.000 claims description 5
- 238000003672 processing method Methods 0.000 claims description 5
- 239000010457 zeolite Substances 0.000 claims description 5
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 4
- 239000008399 tap water Substances 0.000 claims description 4
- 235000020679 tap water Nutrition 0.000 claims description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 3
- 238000005273 aeration Methods 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 238000010926 purge Methods 0.000 claims description 3
- 230000001954 sterilising effect Effects 0.000 claims description 3
- 239000002028 Biomass Substances 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 238000004062 sedimentation Methods 0.000 abstract description 11
- 235000020188 drinking water Nutrition 0.000 abstract description 10
- 239000003651 drinking water Substances 0.000 abstract description 10
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 abstract description 9
- 244000005700 microbiome Species 0.000 abstract description 7
- 238000011001 backwashing Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000746 purification Methods 0.000 abstract description 3
- 241000700605 Viruses Species 0.000 abstract description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract 1
- 238000006065 biodegradation reaction Methods 0.000 abstract 1
- 239000000460 chlorine Substances 0.000 abstract 1
- 229910052801 chlorine Inorganic materials 0.000 abstract 1
- 239000003864 humus Substances 0.000 abstract 1
- 238000006385 ozonation reaction Methods 0.000 abstract 1
- 239000010802 sludge Substances 0.000 abstract 1
- 239000013589 supplement Substances 0.000 abstract 1
- 230000001112 coagulating effect Effects 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 11
- 238000001556 precipitation Methods 0.000 description 7
- 238000004659 sterilization and disinfection Methods 0.000 description 5
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 3
- 239000013618 particulate matter Substances 0.000 description 3
- 239000006228 supernatant Substances 0.000 description 3
- 241000195493 Cryptophyta Species 0.000 description 2
- 241000243686 Eisenia fetida Species 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000001717 pathogenic effect Effects 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000238571 Cladocera Species 0.000 description 1
- 241000223935 Cryptosporidium Species 0.000 description 1
- 241000224467 Giardia intestinalis Species 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 239000005422 algal bloom Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000005446 dissolved organic matter Substances 0.000 description 1
- 239000002384 drinking water standard Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229940085435 giardia lamblia Drugs 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 150000002896 organic halogen compounds Chemical class 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- 231100000027 toxicology Toxicity 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
Images
Classifications
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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
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- Separation Using Semi-Permeable Membranes (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
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
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.
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| CNA2009100872095A CN101580328A (en) | 2009-06-19 | 2009-06-19 | Method and device for treating micro-polluted surface water |
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|---|---|---|---|
| CNA2009100872095A CN101580328A (en) | 2009-06-19 | 2009-06-19 | Method and device for treating micro-polluted surface water |
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|---|---|---|---|---|
| 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 |
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