CN108947006A - A kind of sewage water treatment method - Google Patents
A kind of sewage water treatment method Download PDFInfo
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- CN108947006A CN108947006A CN201810805677.0A CN201810805677A CN108947006A CN 108947006 A CN108947006 A CN 108947006A CN 201810805677 A CN201810805677 A CN 201810805677A CN 108947006 A CN108947006 A CN 108947006A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000010865 sewage Substances 0.000 title claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 21
- 238000003756 stirring Methods 0.000 claims abstract description 21
- 239000000701 coagulant Substances 0.000 claims abstract description 20
- 230000001112 coagulating effect Effects 0.000 claims abstract description 20
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 18
- 230000003647 oxidation Effects 0.000 claims abstract description 17
- 238000000926 separation method Methods 0.000 claims abstract description 17
- 150000001875 compounds Chemical class 0.000 claims abstract description 14
- 239000003513 alkali Substances 0.000 claims abstract description 12
- 239000007800 oxidant agent Substances 0.000 claims abstract description 10
- 230000001590 oxidative effect Effects 0.000 claims abstract description 10
- 239000002131 composite material Substances 0.000 claims abstract description 9
- 239000006228 supernatant Substances 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims description 28
- 238000005345 coagulation Methods 0.000 claims description 20
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- 230000015271 coagulation Effects 0.000 claims description 10
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 7
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 7
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims description 7
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 7
- 238000004062 sedimentation Methods 0.000 claims description 7
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- 239000000920 calcium hydroxide Substances 0.000 claims description 5
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 5
- 238000006555 catalytic reaction Methods 0.000 claims description 5
- UMPKMCDVBZFQOK-UHFFFAOYSA-N potassium;iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[K+].[Fe+3] UMPKMCDVBZFQOK-UHFFFAOYSA-N 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 4
- 125000002091 cationic group Chemical group 0.000 claims description 4
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims description 4
- -1 Na2Fe04 Chemical compound 0.000 claims description 3
- 125000000129 anionic group Chemical group 0.000 claims description 3
- MSFGZHUJTJBYFA-UHFFFAOYSA-M sodium dichloroisocyanurate Chemical compound [Na+].ClN1C(=O)[N-]C(=O)N(Cl)C1=O MSFGZHUJTJBYFA-UHFFFAOYSA-M 0.000 claims description 3
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 claims description 2
- 239000004155 Chlorine dioxide Substances 0.000 claims description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 2
- 230000003197 catalytic effect Effects 0.000 claims description 2
- 235000019398 chlorine dioxide Nutrition 0.000 claims description 2
- 238000005189 flocculation Methods 0.000 claims description 2
- 230000016615 flocculation Effects 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 2
- XSXSKSKONCDOMZ-UHFFFAOYSA-N sodium;1,3,5-trichloro-1,3,5-triazinane-2,4,6-trione Chemical compound [Na+].ClN1C(=O)N(Cl)C(=O)N(Cl)C1=O XSXSKSKONCDOMZ-UHFFFAOYSA-N 0.000 claims description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims 3
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims 1
- 230000005622 photoelectricity Effects 0.000 claims 1
- CHKVPAROMQMJNQ-UHFFFAOYSA-M potassium bisulfate Chemical compound [K+].OS([O-])(=O)=O CHKVPAROMQMJNQ-UHFFFAOYSA-M 0.000 claims 1
- 229910000343 potassium bisulfate Inorganic materials 0.000 claims 1
- 239000012286 potassium permanganate Substances 0.000 claims 1
- 201000010099 disease Diseases 0.000 abstract description 7
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 7
- 239000005446 dissolved organic matter Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000012425 OXONE® Substances 0.000 description 5
- 239000006247 magnetic powder Substances 0.000 description 4
- HJKYXKSLRZKNSI-UHFFFAOYSA-I pentapotassium;hydrogen sulfate;oxido sulfate;sulfuric acid Chemical compound [K+].[K+].[K+].[K+].[K+].OS([O-])(=O)=O.[O-]S([O-])(=O)=O.OS(=O)(=O)O[O-].OS(=O)(=O)O[O-] HJKYXKSLRZKNSI-UHFFFAOYSA-I 0.000 description 4
- 230000003750 conditioning effect Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 238000003889 chemical engineering Methods 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 2
- 230000002572 peristaltic effect Effects 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 2
- 229910001948 sodium oxide Inorganic materials 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 125000002252 acyl group Chemical group 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- OKBMCNHOEMXPTM-UHFFFAOYSA-M potassium peroxymonosulfate Chemical compound [K+].OOS([O-])(=O)=O OKBMCNHOEMXPTM-UHFFFAOYSA-M 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000009938 salting Methods 0.000 description 1
- 238000003375 selectivity assay Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000000126 substance Substances 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
- C02F1/302—Treatment of water, waste water, or sewage by irradiation with microwaves
-
- 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
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
- C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
-
- 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
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/488—Treatment of water, waste water, or sewage with magnetic or electric fields for separation of magnetic materials, e.g. magnetic flocculation
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention is a kind of sewage water treatment method, and its step are as follows: into raw water or sewage, dosing coagulant carries out coagulating, controls pH value between 4.0-7.5, adds polyacrylamide, is sirred and separated, takes supernatant；It is added directly composite oxidant into supernatant, sufficiently pre-oxidizes, obtains pre-oxidation liquid；Compound alkali is added into pre-oxidation liquid, pH value is adjusted between 6-9.5, obtains liquid to be processed；Into liquid to be processed, dosing coagulant carries out coagulating again, controls pH value between 4.0-7.5, and polyacrylamide quickly is added after stirring, after being slowly stirred, is separated by solid-liquid separation, takes clarified solution；Compound alkali is added to adjust pH value again into clarified solution, pH value maintains between 6.5-9.The method of the present invention is simple, have removal dissolved organic matter effect it is good, it is general to variety classes stain disease it is strong, operating cost is lower, is suitble to the reconstruction or newly-built technique of large and small sewage treatment plant.
Description
Technical field
The present invention relates to the technical fields of purifying water process, are mainly used for stain disease processing, can be used for drinking water
The sewage water treatment method technical field of dissolved organic matter pollution in water removal is gone in emergency processing, enhancing.
Background technique
Country carries out level-one emission standard A to sewage treatment plant at present, and it is 50mg/L that COD, which discharges highest limit value, and municipal administration is dirty
Water treatment plant is handled by normal biochemical, and COD value generally can light qualified discharge.But the sewage treatment for industrial park
The sewage treatment plant of factory, especially chemical industrial park, because the dissolubility for containing extremely complex bio-refractory in stain disease is organic
Object, after only being handled by biochemical system, COD value be difficult it is up to standard, the COD value after biochemistry generally in 90mg/L between 200mg/L,
It needs to increase ozone joint BAF (biological aerated filter) technique in rear end, there is capital construction, equipment disposably to put into huge, daily
The high disadvantage of operating cost, the sewage treatment plant of some back yard industry gardens combine BAF (biological aerated filter) technique to ozone
The investment of great number is hung back, and the stain disease characteristic that relevant speciality department is directed to oneself can only be sought, and develops proprietary formula, although
Capital cost is little, but that there is proprietary formula specificitys is strong, output is small, the market price is opaque, operating cost generally compared with
High disadvantage.
Summary of the invention
The technical problem to be solved by the present invention is in view of the deficiencies of the prior art, provide a kind of removal dissolved organic matter
Effect is good, strong, the lower sewage water treatment method of operating cost general to variety classes stain disease.
The technical problem to be solved by the present invention is to what is realized by technical solution below, the present invention is a kind of sewage
Processing method, its main feature is that, its step are as follows:
(1) into raw water or sewage, dosing coagulant carries out coagulating, and quickly stirs, and controls mixing speed in 300-350
Rev/min, pH value is controlled by the dosage of coagulant, for pH value between 4.0-7.5, stopping adds coagulation after coagulating
Agent adds 1mg/L-5mg/L polyacrylamide, first by 200-250 revs/min of quick stirring 30-60 second, then by 30-80 turn/
Minute is slowly stirred 2-2.5 minutes, is separated by solid-liquid separation, takes supernatant；
(2) composite oxidant is added directly into supernatant, quickly stir, control mixing speed at 300-350 revs/min,
Sufficiently pre-oxidation, reaction time are not less than 10 minutes, obtain pre-oxidation liquid；
(3) compound alkali is added into pre-oxidation liquid, adjusts back pH value, controlled pH value between 6-9.5, obtain liquid to be processed；
(4) into liquid to be processed, dosing coagulant carries out coagulating again, and quickly stirs, and controls mixing speed in 300-
350 revs/min, pH value is controlled by the dosage of coagulant, pH value stops adding between 4.0-7.5 after coagulating
Coagulant adds 1mg/L-5mg/L polyacrylamide, after being slowly stirred by 30-100 revs/min, is separated by solid-liquid separation, is taken
Clarified solution；
(5) compound alkali is added to adjust pH value again into clarified solution, pH value maintains between 6.5-9, can direct emission.
In sewage water treatment method of the present invention, coagulant described in step (1) and step (4) be aluminium polychloride,
At least one of poly-ferric chloride, polyaluminum ferric chloride, polyferric silicate sulfate, polyaluminium sulfate, bodied ferric sulfate.
In sewage water treatment method of the present invention, composite oxidant described in step (2) is potassium ferrate, permanganic acid
Potassium, calcium hypochlorite, sodium hypochlorite, Na2Fe04, sodium dichloro cyanurate, sodium trichloro-isocyanurate, Potassium Monopersulfate are compound
At least one of salt, hydrogen peroxide, chlorine dioxide.
In sewage water treatment method of the present invention, compound alkali described in step (3) and step (5) is calcium hydroxide, hydrogen
At least one of sodium oxide molybdena, sodium carbonate.
In sewage water treatment method of the present invention, polyacrylamide described in step (1) and step (4) is cation
Any one of polyacrylamide or anionic polyacrylamide.
In sewage water treatment method of the present invention, the solid-liquid separation method in step (1) and step (4) is advection sedimentation
Pond, inclined-plate clarifying basin, air floatation machine separation of solid and liquid or magnetic flocculation and magnetic add.
In sewage water treatment method of the present invention, use photoelectrocatalysis to pre-oxidizing simultaneously in oxidation in step (2)
Cheng Jinhang catalysis reaction, wherein photoelectrocatalysis is ultraviolet catalytic, Catalyzed by Ultrasonic Wave or microwave catalysis.
Front and back of the invention uses Mixing enhancement+ to be combined with intermediate with composite oxidant oxidation twice respectively, Neng Gougen
Once according to pending water water quality characteristics adjustment composite oxidant composition and dosage, adjustment, the pH being discharged after secondary hardening coagulation
Value reaches drop to realize to the adaptability of dissolved organic matter, raising dissolved organic matter removal rate in variety classes stain disease
Low operating cost and the purpose for improving processing water water quality, its COD value of treated water can reach 20mg/L, can directly arrange
It puts, does not need to be handled again.Compared with prior art, the method for the present invention is simple, good with removal dissolved organic matter effect,
It is general to variety classes stain disease it is strong, operating cost is lower, is suitble to the reconstruction or newly-built technique of large and small sewage treatment plant.
Specific embodiment
The specific technical solution of the present invention described further below, in order to which those skilled in the art is further understood that
The present invention, without constituting the limitation to its right.
The sewage treatment plant of embodiment 1, certain industrial park mainly handles alcohol waste water, daily handle water at 7000 tons,
For the COD of secondary clarifier effluent in 130-140mg/L or so, current in line standard is that COD is less than or equal to 50mg/L, application after biochemistry
This technique processing method, its step are as follows:
(1) secondary clarifier effluent is pumped into first coagulation reaction tank, used tricks in first reaction lattice of first coagulation reaction tank
Amount pump adds aluminium polychloride and carries out coagulating, quickly stirs when adding, and mixing speed is controlled at 300 revs/min, when mixed
After solidifying pH value in reaction reaches 6.5, stopping adds aluminium polychloride, and hydraulic detention time is no less than 5 minutes, and treatment fluid enters second
React lattice.Polyacrylamide is added by 1-2mg/L with metering pump in second reaction lattice, first presses 200 revs/min, quickly stirs
30 seconds, then 50-80 revs/min is pressed, it mixing slowly 2 minutes, hydraulic detention time is no less than 5 minutes, and treatment fluid enters sedimentation basin,
Standing is separated by solid-liquid separation, and the COD value of clarified solution is in 70-90mg/L at this time.
(2) clarified solution flows into oxidation reaction pond, adds the Potassium Monopersulfate of 20mg/L respectively, simultaneously with two metering pumps
The liquor potassic permanganate of composite compaction technique and 20mg/L controls mixing speed at 300 revs/min, while carrying out Catalyzed by Ultrasonic Wave,
Increase oxidant to the action intensity of organic matter open loop, chain rupture, action time is 15 minutes, obtains pre-oxidation liquid.
(3) pre-oxidation liquid stream enters pH conditioning tank, adds sodium carbonate liquor with metering pump, adjusts back pH value, make pH value 8.5,
Obtain treatment fluid；
(4) treatment fluid flows into second coagulation reaction tank, adds polymerised sulphur in first reaction lattice of second coagulation reaction tank
Sour iron carries out coagulating, quickly stirs when adding, and mixing speed is controlled at 300 revs/min, passes through the dosage of coagulant
PH value is controlled, pH value is 5.5 after coagulating, and stopping adds bodied ferric sulfate, and hydraulic detention time is no less than 5 minutes, place
It manages liquid and enters the second reaction lattice, cationic polyacrylamide is added by 1-2mg/L with metering pump in second reaction lattice, first presses
It 200 revs/min, quickly stirs 30 seconds, then presses 50-80 revs/min, mix slowly 2 minutes, hydraulic detention time is no less than 5 points
Clock, treatment fluid enter sedimentation basin, and standing is separated by solid-liquid separation, and the COD value of clarified solution is in 30-37mg/L at this time.
(5) clear water reserviors are flowed into after calcium hydroxide solution being added in clarified solution, pH value is maintained and can directly be arranged between 6.5-9
Water.
Embodiment 2, case two: certain enterprise of certain chemical engineering industry garden produces printing dye, and day, quantity of wastewater effluent was 2000
Ton or so, the COD of secondary clarifier effluent is in 700-850mg/L or so, at present the adapter tube standard of garden sewage treatment plant after biochemistry
COD is less than or equal to 500mg/L, and using this method for treating water, its step are as follows:
(1) secondary clarifier effluent is pumped into first air floatation machine, reacts lattice in air floatation machine first and adds polyaluminium sulfate progress coagulation
Reaction, is quickly stirred when adding, and mixing speed is controlled at 300 revs/min, and hydraulic detention time is no less than 3 minutes, works as coagulation
After pH value in reaction reaches 6.0, stopping adds polyaluminium sulfate, and treatment fluid flows into the second reaction lattice.Lattice are reacted in air floatation machine second
Polyacrylamide is added by 3-4mg/L with metering pump afterwards, first presses 200 revs/min, quickly stirring 30 seconds, then press 50-80 revs/min
Clock mixes slowly 2.5 minutes, and treatment fluid enters air bearing separation of solid and liquid, and the COD value of clarified solution is in 580-650mg/L at this time.
(2) clarified solution flows into oxidation reaction pond, adds the Potassium Monopersulfate of 50mg/L respectively, simultaneously with three metering pumps
Composite compaction technique, 20mg/L liquor potassic permanganate, 20mg/L potassium ferrate solution control mixing speed at 300 revs/min, together
Shi Jinhang Catalyzed by Ultrasonic Wave increases oxidant to the action intensity of organic matter open loop, chain rupture, and action time is 25 minutes, is obtained
Pre-oxidize liquid.
(3) pre-oxidation liquid stream enters pH conditioning tank, adds compound alkali (calcium hydroxide 50%, sodium carbonate 50%) with peristaltic pump, returns
PH value is adjusted, makes pH value 9.5, obtains treatment fluid；
(4) treatment fluid flows into second air floatation machine, adds bodied ferric sulfate in first reaction lattice of second air floatation machine and carries out
Coagulating is quickly stirred when adding, and mixing speed is controlled at 300 revs/min, and hydraulic detention time is no less than 3 minutes, is led to
The dosage control pH value of coagulant is crossed, pH value is 5.0 after coagulating, and stopping adds bodied ferric sulfate, and treatment fluid flows into
Second reaction lattice.Cationic polyacrylamide is added by 2-3mg/L with metering pump after air floatation machine second reacts lattice, is slowly stirred
Afterwards, treatment fluid enters air bearing separation of solid and liquid, and the COD value of clarified solution is in 350-420mg/L at this time.
(5) clear water reserviors are flowed into after calcium hydroxide solution being added in clarified solution, pH value is maintained and can directly be arranged between 6.5-9
Water.
Embodiment 3, case three: certain enterprise of certain chemical engineering industry garden produces medicine intermediate, day quantity of wastewater effluent 1500
Ton, after multi-step process pre-treatment, the COD of biochemical secondary clarifier effluent is still up to 1000-1200mg/L or so, at present garden
The adapter tube standard of sewage treatment plant is that COD is less than or equal to 500mg/L, and using this method for treating water, its step are as follows:
(1) secondary clarifier effluent is pumped into first magnetic-coagulation reactor, reacts lattice in magnetic-coagulation reactor first and is thrown with metering pump
Add polyaluminum ferric chloride to carry out coagulating, quickly stirred when adding, mixing speed is controlled at 300 revs/min, when coagulation is anti-
After answering pH value to reach 6.0, stopping adds polyaluminum ferric chloride, and hydraulic detention time is no less than 5 minutes, and treatment fluid enters magnetic-coagulation
Second reaction lattice of reactor.Above second reaction lattice, magnetic powder is added by magnetic loading equipemtn, magnetic powder dosage is in 3 public affairs
- 10 kgs/tonne of jin, is quickly stirred when adding, and mixing speed is controlled at 300 revs/min, and hydraulic detention time is no less than 5 points
Clock, treatment fluid enter magnetic-coagulation reactor third reaction lattice.Third react lattice, with metering pump by 2-3mg/L be added sun from
Sub- polyacrylamide first presses 200 revs/min, quickly stirring 30 seconds, then presses 50-80 revs/min, mixes slowly 2 minutes, handles
Liquid enters sedimentation basin, and standing is separated by solid-liquid separation, and the COD value of clarified solution is in 850-1050mg/L at this time.
(2) clarified solution flows into oxidation reaction pond, and the sodium dichloro cyanurate for successively adding 100mg/L with four metering pumps is molten
Liquid controls mixing speed at 300 revs/min, while carrying out Catalyzed by Ultrasonic Wave, and action time is 10 minutes.Add 150mg/L's
Potassium peroxymonosulfate solution controls mixing speed at 300 revs/min, while carrying out Catalyzed by Ultrasonic Wave, and action time is
10 minutes.It adds 50mg/L liquor potassic permanganate, 50mg/L potassium ferrate solution again, controls mixing speed at 300 revs/min,
Catalyzed by Ultrasonic Wave is carried out simultaneously, and action time is 10 minutes.It is stepped up using different oxidants to organic matter open loop, chain rupture
Action intensity, action time amount to 30 minutes, obtain pre-oxidation liquid.
(3) pre-oxidation liquid stream enters pH conditioning tank, adds compound alkali (calcium hydroxide 40%, sodium carbonate 40%, hydrogen with peristaltic pump
Sodium oxide molybdena 20%) readjustment pH value, make pH value 9.5, obtains treatment fluid；
(4) treatment fluid flows into second magnetic-coagulation reactor, reacts lattice in second magnetic-coagulation reactor first and adds polymerised sulphur
Sour iron carries out coagulating, while quickly stirring, controls 300 revs/min of mixing speed, controls pH by the dosage of coagulant
Value, pH value is 5.0 after coagulating, and stopping adds bodied ferric sulfate, and hydraulic detention time is no less than 5 minutes, handles liquid stream
Enter the second reaction lattice.Second reaction lattice by magnetic loading equipemtn be added magnetic powder, 3 kilograms -10 kgs/tonne of magnetic powder dosage, fastly
Speed stirring, controls 300 revs/min of mixing speed, and hydraulic detention time is no less than 5 minutes, and treatment fluid flows into third and reacts lattice.?
Third reacts lattice and cationic polyacrylamide is added by 2-3mg/L by metering pump, first presses 200 revs/min, quickly stirs 30
Second, then 50-80 revs/min is pressed, it mixes slowly 2 minutes, into sedimentation basin, is separated by solid-liquid separation, the COD value of clarified solution exists at this time
365-420mg/L。
(5) calcium hydroxide is added to adjust pH value in clarified solution, pH value is maintained and can be directly discharged between 6.5-9 towards garden
In the pipe network of sewage treatment plant.
Embodiment 4, case four: certain municipal sewage plant mainly handles sanitary sewage, containing a small amount of industrial wastewater, daily
Water is handled at 20000 tons, the COD of secondary clarifier effluent mentions mark to national four class water row in 65-80mg/L or so at present after biochemistry
Put standard: COD is less than or equal to 30mg/L, and using this method for treating water, its step are as follows:
(1) secondary clarifier effluent flow into high dense settling pond, the first reaction tank of high dense settling pond add aluminium polychloride into
Row coagulating, is quickly stirred when adding, mixing speed control at 300 revs/min, when coagulating pH value reach 7.0 to
After 7.5, stopping adds aluminium polychloride, and hydraulic detention time is not less than 5 minutes, and treatment fluid flows into the second reaction lattice.Highly dense
Anionic polyacrylamide is added by 1-2mg/L with metering pump in the second reaction lattice for spending clarifying basin, first presses 200 revs/min, quickly
Stirring 30 seconds, then 50-80 revs/min is pressed, it mixing slowly 2 minutes, treatment fluid enters clarifying basin standing, it is separated by solid-liquid separation, this
When clarified solution COD value in 45-60mg/L.
(2) clarified solution flows into oxidation reaction pond, and the Potassium Monopersulfate for successively adding 20mg/L with two metering pumps is compound
Salting liquid, the potassium ferrate solution of 20mg/L control mixing speed at 300 revs/min, while with Catalyzed by Ultrasonic Wave, and the time is
15 minutes, obtain pre-oxidation liquid.
(3) pre-oxidation liquid flows into magnetic-coagulation reactor by pipeline.Compound alkali (hydroxide is added with metering pump on pipeline
Sodium 10%, sodium carbonate 90%), it is mixed with pipe-line mixer, adjusts back pH value to 8.5, obtain treatment fluid；
(4) treatment fluid flows into magnetic-coagulation reactor, adds polyaluminum sulfate with metering pump in first reaction lattice of magnetic-coagulation reactor
Iron carries out coagulating, while quickly stirring, controls 300 revs/min of mixing speed, controls pH by the dosage of coagulant
Value, pH value is 5.5 after coagulating, and stopping adds bodied ferric sulfate, and hydraulic detention time is no less than 5 minutes, handles liquid stream
Enter second reaction lattice.Cation polypropylene acyl is added by 1-2mg/L with metering pump in second reaction lattice of magnetic-coagulation reactor
Amine first presses 200 revs/min, quickly stirring 30 seconds, then presses 50-80 revs/min, mixes slowly 2 minutes, into sedimentation basin, carries out
It is separated by solid-liquid separation, the COD value of clarified solution is in 15-25mg/L at this time.
(5) clear water reserviors are flowed into after compound alkali is added in clarified solution, pH value maintains between 6.5-9, can directly drain.
Claims (7)
1. a kind of sewage water treatment method, which is characterized in that its step are as follows:
(1) into raw water or sewage, dosing coagulant carries out coagulating, and quickly stirs, and controls mixing speed in 300-350
Rev/min, pH value is controlled by the dosage of coagulant, for pH value between 4.0-7.5, stopping adds coagulation after coagulating
Agent adds 1mg/L-5mg/L polyacrylamide, first by 200-250 revs/min of quick stirring 30-60 second, then by 30-80 turn/
Minute is slowly stirred 2-2.5 minutes, is separated by solid-liquid separation, takes supernatant；
(2) composite oxidant is added directly into supernatant, quickly stir, control mixing speed at 300-350 revs/min,
Sufficiently pre-oxidation, reaction time are not less than 10 minutes, obtain pre-oxidation liquid；
(3) compound alkali is added into pre-oxidation liquid, adjusts back pH value, controlled pH value between 6-9.5, obtain liquid to be processed；
(4) into liquid to be processed, dosing coagulant carries out coagulating again, and quickly stirs, and controls mixing speed in 300-
350 revs/min, pH value is controlled by the dosage of coagulant, pH value stops adding between 4.0-7.5 after coagulating
Coagulant adds 1mg/L-5mg/L polyacrylamide, after being slowly stirred by 30-100 revs/min, is separated by solid-liquid separation, is taken
Clarified solution；
(5) compound alkali is added to adjust pH value again into clarified solution, pH value maintains between 6.5-9, can direct emission.
2. sewage water treatment method according to claim 1, it is characterised in that: coagulant described in step (1) and step (4)
For in aluminium polychloride, poly-ferric chloride, polyaluminum ferric chloride, polyferric silicate sulfate, polyaluminium sulfate, bodied ferric sulfate at least
It is a kind of.
3. sewage water treatment method according to claim 1, it is characterised in that: composite oxidant described in step (2) is height
Potassium ferrite, potassium permanganate, calcium hypochlorite, sodium hypochlorite, Na2Fe04, sodium dichloro cyanurate, sodium trichloro-isocyanurate, single mistake
At least one of potassium acid sulfate complex salt, hydrogen peroxide, chlorine dioxide.
4. sewage water treatment method according to claim 1, it is characterised in that: compound alkali described in step (3) and step (5)
For at least one of calcium hydroxide, sodium hydroxide, sodium carbonate.
5. sewage water treatment method according to claim 1, it is characterised in that: poly- third described in step (1) and step (4)
Acrylamide is any one of cationic polyacrylamide or anionic polyacrylamide.
6. sewage water treatment method according to claim 1, it is characterised in that: the separation of solid and liquid in step (1) and step (4)
Mode is that horizontal sedimentation tank, inclined-plate clarifying basin, air floatation machine separation of solid and liquid or magnetic flocculation and magnetic add.
7. sewage water treatment method according to claim 1, it is characterised in that: aoxidizing in step (2) while using photoelectricity
Catalysis carries out catalysis reaction to preoxidation process, and wherein photoelectrocatalysis is ultraviolet catalytic, Catalyzed by Ultrasonic Wave or microwave catalysis.
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| CN109796091A (en) * | 2018-12-20 | 2019-05-24 | 上海市建工设计研究总院有限公司 | A kind of sewage water treatment method |
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| CN113264604A (en) * | 2020-10-28 | 2021-08-17 | 水口山有色金属有限责任公司 | Method for regenerating mine filling wastewater |
| CN114477512A (en) * | 2021-11-26 | 2022-05-13 | 云南大地丰源环保有限公司 | Wastewater treatment method |
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