CN106746043A - A kind of deep-purifying method of compound micro-polluted source water - Google Patents
A kind of deep-purifying method of compound micro-polluted source water Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 91
- 238000000034 method Methods 0.000 title claims abstract description 39
- 150000001875 compounds Chemical class 0.000 title claims abstract description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 57
- 238000001914 filtration Methods 0.000 claims abstract description 39
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 29
- 229910052742 iron Inorganic materials 0.000 claims abstract description 29
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 25
- 239000011572 manganese Substances 0.000 claims abstract description 25
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000001556 precipitation Methods 0.000 claims abstract description 21
- 239000004576 sand Substances 0.000 claims abstract description 20
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 239000003651 drinking water Substances 0.000 claims abstract description 12
- 235000020188 drinking water Nutrition 0.000 claims abstract description 12
- 239000000945 filler Substances 0.000 claims abstract description 11
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 6
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims abstract description 5
- 239000000725 suspension Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims abstract description 4
- 230000000721 bacterilogical effect Effects 0.000 claims abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 24
- 238000004659 sterilization and disinfection Methods 0.000 claims description 15
- 239000000706 filtrate Substances 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 9
- 238000004062 sedimentation Methods 0.000 claims description 9
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims description 6
- 230000036647 reaction Effects 0.000 claims description 6
- 239000006004 Quartz sand Substances 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 238000011001 backwashing Methods 0.000 claims description 5
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 claims description 3
- 239000004155 Chlorine dioxide Substances 0.000 claims description 3
- 239000007844 bleaching agent Substances 0.000 claims description 3
- 235000019398 chlorine dioxide Nutrition 0.000 claims description 3
- 238000006385 ozonation reaction Methods 0.000 claims description 2
- 229910021645 metal ion Inorganic materials 0.000 claims 1
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 7
- 239000000654 additive Substances 0.000 abstract description 3
- 230000000996 additive effect Effects 0.000 abstract description 3
- 150000002500 ions Chemical class 0.000 abstract description 3
- 229910002651 NO3 Inorganic materials 0.000 abstract description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 abstract description 2
- 239000005416 organic matter Substances 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 18
- 229910052757 nitrogen Inorganic materials 0.000 description 9
- 239000003344 environmental pollutant Substances 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- 230000001954 sterilising effect Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 4
- 239000003610 charcoal Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004073 vulcanization Methods 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 3
- 241001509286 Thiobacillus denitrificans Species 0.000 description 3
- 238000005189 flocculation Methods 0.000 description 3
- 239000001963 growth medium Substances 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 239000002352 surface water Substances 0.000 description 3
- 229910052793 cadmium Inorganic materials 0.000 description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000007146 photocatalysis Methods 0.000 description 2
- 230000001699 photocatalysis Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 238000006701 autoxidation reaction Methods 0.000 description 1
- 239000000090 biomarker Substances 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000005446 dissolved organic matter Substances 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 235000014413 iron hydroxide Nutrition 0.000 description 1
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
A kind of deep-purifying method of compound micro-polluted source water, comprises the following steps：（1）Inner electrolysis reaction treatment：Compound micro-polluted source water is set to enter Inner electrolysis reactor, filling sponge iron and the mixed fillers of activated carbon, are acted on by the direct Inner electrolysis for occurring of iron and carbon and the nitrate nitrogen in compound micro-polluted source water, ammonia nitrogen, dissolubility small organic molecule, micro heavy are processed in Inner electrolysis reactor；（2）Precipitation process, the molysite produced to reaction, the hydroxide of iron and remaining heavy metal ion carry out precipitation process；（3）Filtration with manganese sand, removes remaining iron and manganese；（4）Security personnel's filtering, further removes to suspension in water；（5）Disinfect, Bacteriological Indexes reach sanitary standard for drinking water in making water.The polluters such as nitrate, low molecule organic matter, heavy metal, iron, manganese in the compound micro polluted source of the method collaboration removal, without outer source additive, remain the Hubeiwan in water.
Description
Technical field
The present invention relates to a kind of method for carrying out advanced treating to the water for being combined the drinking water source of micro- pollution, more particularly to nitre
The purification of hydrochlorate nitrogen, the source water of heavy metal pollution, belongs to the further treatment technique field of drinking water.
Background technology
Micropollutant water generally refers to that contained pollutant kind is more, property is more complicated, but concentration is humbleer
Water body.With the fast development of China's industrial or agricultural, dirt of the pollutant that people discharge in life, production process to source water quality
Dye is increasingly severe, and drinking water water supply security problem has obtained extensive attention.At present, the water factory of most countries uses in the world
Be the handling process such as conventional flocculation, precipitation, filtering, sterilization, and conventional treatment process is mainly removed pair as if water in it is outstanding
Float, colloidal substance and bacterium are low to the removal efficiency such as dissolved organic matter, ammonia nitrogen, nitrate nitrogen in water.Therefore, micro polluted source
The treatment technology of water has turned into an important and urgent research topic.
The further treatment technique of micro-polluted water mainly has ozone oxidation, charcoal absorption, biological activated carbon, ozone-activity
The technologies such as charcoal absorption is used in conjunction, membrane filtration, photocatalysis reinforcing, enhanced coagulation.Wherein ozone technology, photocatalysis reinforcing, can not be fine
Go water removal in nitrate nitrogen, heavy metal；Mixing enhancement+ can not well remove nitrate nitrogen；Biotechnology can be compared with
Good organics removal and ammonia nitrogen, nitric acid nitrogen salt etc., but treatment nitrate nitrogen needs addition carbon source, while heavy metal does not almost have
There is treatment effect；Membrane technology has preferably removal for the polluter of dissolubility and small molecule, but UF membrane is especially
While reverse osmosis are removed for pollutant in water, nearly all healthy trace elements with household is also removed, this in itself with it is strong
Kang Yinshui just runs in the opposite direction.
Technical scheme disclosed in existing patent document, is primarily present problems with：
1. the speed of service is slow
As disclosed in CN103232117A《A kind of method of low ratio of carbon to ammonium micro-polluted water denitrogenation》, in upward flow reactor point
Stratification sulphur/lime stone/forest tree castoff Composite denitrification filler, anaerobic sludge is inoculated into filler, set startup HRT as
8h, raw water pump enters, and be continuously passed through thiobacillus denitrificans culture medium carries out dynamic cultivation domestication to sludge, until stable operation, operation
10 days, by the Na in thiobacillus denitrificans culture medium2S2O3·5H2O is reduced to half, continues to tame until biomembrane is regrowed
Maturation, then by the Na in thiobacillus denitrificans culture medium2S2O3·5H2O is down to 0, microorganism is made using the sulphur in filler
For sulphur source carries out growth and breeding, system operation 10d ultimately forms the biomembrane of stabilization, and the de- of normal micro-polluted water is carried out afterwards
Nitrogen treatment.Disclosed in CN102267785A《Reused water processing apparatus and method with micropollutant water as water source》.
2 processes are complicated
As disclosed in CN103601339A《Fe, Mn and ammonia nitrogen collaboration removal system in a kind of compound micro-polluted source water》,
By hybrid reaction settling system, chemical assisted oxidation system, air oxidation system, filtration system and decontamination system, using biography
The multiple means such as matter oxygenation, autoxidation, chemical oxidation, retention filtering, physical and chemical adsorption, contact catalysis/biological oxidation.
3. chemical agent is added, secondary pollution is easily caused
As disclosed in CN101254986《The processing system and processing method of micro-polluted source water》, CN101306891 discloses
's《A kind of method that combined oxidation processes micro-polluted source water》.
4. treatment effect is not good
As disclosed in CN101306888《A kind of method for processing micro-polluted source water》Although operation process is simple,
Have impact on treatment effect.
Therefore, both can guarantee that can remove polluter micro in water removal, and the mineral in water can be to greatest extent retained again
Matter, is the drinking water deep purification problem for being badly in need of solving at present.
The content of the invention
Present invention aim to overcome that the deficiency of existing micropollutant water purification techniques, there is provided a kind of compound micro polluted source
The deep-purifying method of water, the method remains the Hubeiwan in water again without the outer source additive of addition, can be to being combined micro- dirt
Dye drinking water resource carries out advanced treating.
The deep-purifying method of compound micro-polluted source water of the invention, comprises the following steps：
(1) Inner electrolysis reaction treatment：
Compound micro-polluted source water is entered Inner electrolysis reactor, sponge iron is loaded in Inner electrolysis reactor with activated carbon
Mixed fillers, the Inner electrolysis directly occurred by iron and carbon act on the nitrate nitrogen, ammonia nitrogen, molten to being combined in micro-polluted source water
Solution property small organic molecule, micro heavy are processed；Hydraulic detention time is -24 hours 1 hour.
Inner electrolysis reactor is the main body for processing pollutant in micro-polluted water, and Inner electrolysis reactor can be fluidized-bed reaction
Device, fixed bed reactors, it is -24 hours 4 hours to use fixed bed reactors hydraulic detention time, using vulcanization bed reactor by
Fully reacted in water and filtrate and polarization problem can be overcome, the residence time of reaction is more shorter than the fixed bed reactors residence time
A bit, the residence time was at -10 hours 1 hour.
(2) precipitation process：
Water outlet after Inner electrolysis reaction treatment enters sedimentation basin, molysite, the hydroxide of iron and the residue produced to reaction
Heavy metal ion carry out precipitation process；Hydraulic detention time is 30-60 minutes.
External source coagulation-flocculation agent need not be added, 2 days spoil disposals of sedimentation basin are once.
(3) filtration with manganese sand：
Water outlet after precipitation process is filtered by the mixing filtrate of manganese sand and quartz sand, remove remaining iron and
Manganese.
The content of total iron is between 0.02mg/L-1mg/L in water outlet after precipitation, in order to ensure that water outlet iron content is less than
Standards for drinking water quality, water outlet carries out deferrization and demanganization by filtration with manganese sand.The filter tank working time is 24 hours, and every 12 is small
Shi Jinhang is once backwashed.
(4) security personnel's filtering：
Water outlet after filtration with manganese sand carries out security personnel's filtering, and suspension in water is further removed.
Security personnel's filtering filtrate is activated carbon.
(5) disinfect, the one kind in being sterilized by ozonization, disinfection by ultraviolet light, disinfection by chlorine dioxide or bleaching powder
Or the disinfection of effluent after several filterings to security personnel, Bacteriological Indexes reach sanitary standard for drinking water in making water.
The sponge iron of the step (1) is 4 with the mass ratio of activated carbon:1-6:1.
The mass ratio of manganese sand and quartz sand is 1 in the mixing filtrate of the step (3):2-1:3.
The filtering velocity of filtering is 4 ms/h -5 ms/h in the step (3).
In the step (3), to the mixing filtrate after filtering per once being backwashed within 12-16 hour, backwashing water and
Water outlet after Inner electrolysis reaction treatment is together precipitated, is filtered, adsorbed and disinfected.
It is every to security personnel's filtering filtrate (activated carbon) after absorption once to be recoiled within 12-16 hours in the step (4)
Wash, backwashing water is together precipitated, filtered, adsorbed and disinfected with the water outlet after Inner electrolysis reaction treatment.
The present invention by compound micro-polluted source water carried out successively Inner electrolysis reaction treatment, precipitation process, filtration treatment,
Charcoal absorption is processed and disinfected, and can cooperate with nitrate, low molecule organic matter, weight in the compound micro polluted source of removal
The polluters such as metal, iron, manganese, without adding outer source additive, remain the Hubeiwan in water again, so as to reach economy,
Effectively, the purpose of healthy drinking water advanced treatment.
Specific embodiment
The deep-purifying method of compound micro-polluted source water of the invention, is in being carried out successively to compound micro-polluted source water
Cell reaction treatment, precipitation process, filtration with manganese sand treatment, security personnel and disinfect at filtration treatment.Specifically include following steps：
1. Inner electrolysis reaction treatment
Inner electrolysis reaction treatment is carried out to the source water for being combined micro- pollution by Inner electrolysis reactor first.Inner electrolysis react
Device is the main body for processing pollutant in micro-polluted water, and Inner electrolysis reactor can be fluidized-bed reactor or fixed bed reactors.
The mixed fillers of sponge iron and activated carbon are filled with Inner electrolysis reactor, by directly occurring with iron and carbon in
Electrolysis is processed pollutants such as the nitrate nitrogen in water, ammonia nitrogen, dissolubility small organic molecule, micro heavies.
During using fixed bed reactors, hydraulic detention time is -24 hours 4 hours.During using vulcanization bed reactor, due to
Water and filtrate fully react and can overcome polarization problem, and the residence time of reaction is more shorter than the fixed bed reactors residence time,
Residence time is between 1-10 hours.
2. precipitation process
Water outlet after Inner electrolysis reaction treatment enters sedimentation basin, produces the hydroxide of molysite, iron to reaction in sedimentation basin
Thing and remaining heavy metal ion carry out precipitation process；
The water outlet of Inner electrolysis reactor contains molysite and iron hydroxide, is precipitated into sedimentation basin, outer without addition
Source coagulation-flocculation agent, sedimentation basin hydraulic detention time is 30-60 minutes, and 2 days spoil disposals are once.
3. filtration with manganese sand
The content of total iron is 0.02-1mg/L in water outlet after precipitation, in order to ensure that water outlet iron content is drunk less than life
Water hygiene standard, makes the water outlet after precipitation by manganese sand filter, carries out except iron and demanganization.Filtrate is using manganese sand and quartz sand quality
Than 1:2-1:3 mixing filtrate.Filtering velocity is 4-5 ms/h.The filter tank working time is 24 hours, is carried out within every -16 hours 12 hours
Once backwash.
4. security personnel's filtering
In order to ensure the suspension in sedimentation basin water outlet no more than sanitary standard for drinking water, the water outlet of manganese sand filter is passed through with work
Property charcoal for filtrate cartridge filter, suspension in water is further removed, it is ensured that water outlet physical and chemical index reaches requirement.
The cartridge filter working time is 24 hours, is once backwashed within every -16 hours 12 hours.
The backwashing water of filtration with manganese sand pond and cartridge filter returns to sedimentation basin together, with water inlet together by precipitation, suction
It is attached, disinfect.
5. disinfect
Can be carried out disinfection using methods such as ozone, ultraviolet disinfection, disinfection by chlorine dioxide, bleaching powder sterilizations, make water outlet micro-
Biological indicators reach sanitary standard for drinking water.
Embodiment 1
Surface water containing nitrate nitrogen 10-40mg/L, between 6-7.5, cell reaction uses fixed bed reactors to pH, adopts
Compare sponge iron with quality：Activated carbon 5：1 filler, 1 hour residence time, nitrate nitrogen clearance is reached between 50%-70%,
Nitrogen removal rate is reached between 30%-50%, and 4 hours residence times, the clearance of total nitrogen reaches 60%-75%, when stopping
Between reach 24 hours, the clearance of total nitrogen is reached between 85%-92%.Then precipitation, filtration with manganese sand, security personnel's filtering and sterilization.
Embodiment 2
The surface water of 20mg/L containing nitrate nitrogen, ammonia nitrogen 5mg/L, between 6-7.5, cell reaction uses sponge iron to pH：
Activated carbon 4：1 filler, 4 hours residence times, nitrate nitrogen clearance is reached between 40%-60%, and nitrogen removal rate reaches
Between 30%-40%, reached 16 hours when the residence time, the clearance of total nitrogen is reached between 75%-85%.Then precipitation, manganese
Sand filtering, security personnel's filtering and sterilization.
Embodiment 3
The surface water of 20mg/L containing nitrate nitrogen, ammonia nitrogen 20mg/L, between 6-7.5, cell reaction uses vulcanization bed to pH
Reactor, using sponge iron：Activated carbon 5：1 filler, the residence time, the clearance of total nitrogen reached 75%-88% at 10 hours
Between.Then precipitation, filtration with manganese sand, security personnel's filtering and sterilization.
Embodiment 4
20mg/L containing nitrate nitrogen, cadmium content is 0.5mg/L, and between 6-7.5, cell reaction is used for lead 0.5mg/L, pH
Vulcanization bed reactor, sponge iron is compared using quality：Activated carbon 6：1 filler, 1 hour residence time, the content of water outlet cadmium is less than
0.005mg/L, the content of lead is less than 0.005mg/L, nitrate nitrogen, total nitrogen clearance it is unaffected.Then precipitation, manganese sand mistake
Filter, security personnel's filtering and sterilization.
Claims (6)
1. a kind of deep-purifying method of compound micro-polluted source water, it is characterized in that, comprise the following steps：
（1）Inner electrolysis reaction treatment：
Compound micro-polluted source water is entered Inner electrolysis reactor, the mixing of sponge iron and activated carbon is loaded in Inner electrolysis reactor
Filler, the Inner electrolysis directly occurred by iron and carbon act on nitrate nitrogen, ammonia nitrogen, the dissolubility to being combined in micro-polluted source water
Small organic molecule and micro heavy are processed；Hydraulic detention time is -24 hours 1 hour；
（2）Precipitation process：
Water outlet after Inner electrolysis reaction treatment enters sedimentation basin, molysite, the hydroxide of iron and remaining heavy produced to reaction
Metal ion carries out precipitation process；Hydraulic detention time is 30-60 minutes；
（3）Filtration with manganese sand：
Water outlet after precipitation process is filtered by the mixing filtrate of manganese sand and quartz sand, remaining iron and manganese is removed；
（4）Security personnel's filtering：
Water outlet after filtration with manganese sand carries out security personnel's filtering, and suspension in water is further removed；
（5）Disinfect, the one kind or several in being sterilized by ozonization, disinfection by ultraviolet light, disinfection by chlorine dioxide or bleaching powder
Plant to the disinfection of effluent after security personnel's filtering, Bacteriological Indexes reach sanitary standard for drinking water in making water.
2. the deep-purifying method of compound micro-polluted source water according to claim 1, it is characterized in that, the step（1）
Middle sponge iron is 4 with the mass ratio of activated carbon:1-6:1.
3. the deep-purifying method of compound micro-polluted source water according to claim 1, it is characterized in that, the step（3）
In, the mass ratio of manganese sand and quartz sand is 1 in mixing filtrate:2-1:3.
4. the deep-purifying method of compound micro-polluted source water according to claim 1, it is characterized in that, the step（3）
The filtering velocity of middle filtering is 4 ms/h -5 ms/h.
5. the deep-purifying method of compound micro-polluted source water according to claim 1, it is characterized in that, the step（3）
In, to the mixing filtrate after filtering per once being backwashed within 12-16 hours, going out after backwashing water and Inner electrolysis reaction treatment
Water is together precipitated, is filtered, adsorbed and disinfected.
6. the deep-purifying method of compound micro-polluted source water according to claim 1, it is characterized in that, the step（4）
In, the step（4）In, to the security personnel's filtering filtrate after absorption per once being backwashed within 12-16 hours, backwashing water with it is interior
Water outlet after cell reaction treatment is together precipitated, is filtered, adsorbed and disinfected.
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