CN108383299A - The preprocess method and pretreatment system of coal chemical industrial waste water - Google Patents
The preprocess method and pretreatment system of coal chemical industrial waste water Download PDFInfo
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- CN108383299A CN108383299A CN201810425816.7A CN201810425816A CN108383299A CN 108383299 A CN108383299 A CN 108383299A CN 201810425816 A CN201810425816 A CN 201810425816A CN 108383299 A CN108383299 A CN 108383299A
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- waste water
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- chemical industrial
- flocculation
- industrial waste
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- 239000003245 coal Substances 0.000 title claims abstract description 62
- 239000000126 substance Substances 0.000 title claims abstract description 62
- 239000010842 industrial wastewater Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 43
- 239000002351 wastewater Substances 0.000 claims abstract description 77
- 238000005189 flocculation Methods 0.000 claims abstract description 69
- 230000016615 flocculation Effects 0.000 claims abstract description 69
- 238000012545 processing Methods 0.000 claims abstract description 53
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 46
- 230000003647 oxidation Effects 0.000 claims abstract description 28
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 28
- 239000013049 sediment Substances 0.000 claims abstract description 26
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 24
- 230000003197 catalytic effect Effects 0.000 claims abstract description 23
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims abstract description 22
- 230000001590 oxidative effect Effects 0.000 claims description 50
- 238000006555 catalytic reaction Methods 0.000 claims description 47
- 238000004062 sedimentation Methods 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000005276 aerator Methods 0.000 claims description 17
- 239000003054 catalyst Substances 0.000 claims description 13
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 12
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 12
- -1 phosphate ester salt Chemical group 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 10
- 238000005273 aeration Methods 0.000 claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 239000004575 stone Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 229960000892 attapulgite Drugs 0.000 claims description 6
- 235000013312 flour Nutrition 0.000 claims description 6
- 229910052625 palygorskite Inorganic materials 0.000 claims description 6
- 239000010865 sewage Substances 0.000 claims description 6
- CCEKAJIANROZEO-UHFFFAOYSA-N sulfluramid Chemical group CCNS(=O)(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F CCEKAJIANROZEO-UHFFFAOYSA-N 0.000 claims description 6
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 6
- 239000004115 Sodium Silicate Substances 0.000 claims description 5
- 239000000440 bentonite Substances 0.000 claims description 5
- 229910000278 bentonite Inorganic materials 0.000 claims description 5
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 5
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 5
- 239000004408 titanium dioxide Substances 0.000 claims description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 4
- 229910019142 PO4 Inorganic materials 0.000 claims description 4
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 4
- 229910021536 Zeolite Inorganic materials 0.000 claims description 4
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 4
- 239000000292 calcium oxide Substances 0.000 claims description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 4
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000004571 lime Chemical group 0.000 claims description 4
- 239000002808 molecular sieve Substances 0.000 claims description 4
- 239000010452 phosphate Substances 0.000 claims description 4
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 4
- 239000010457 zeolite Substances 0.000 claims description 4
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 239000007800 oxidant agent Substances 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims 1
- 239000005909 Kieselgur Substances 0.000 claims 1
- 239000011575 calcium Substances 0.000 claims 1
- 229910052791 calcium Inorganic materials 0.000 claims 1
- 239000000460 chlorine Substances 0.000 claims 1
- 229910052801 chlorine Inorganic materials 0.000 claims 1
- 125000001309 chloro group Chemical group Cl* 0.000 claims 1
- 239000011148 porous material Substances 0.000 claims 1
- 238000003672 processing method Methods 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 11
- 230000008569 process Effects 0.000 description 10
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 9
- 239000006228 supernatant Substances 0.000 description 8
- 239000005416 organic matter Substances 0.000 description 6
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 5
- 238000006731 degradation reaction Methods 0.000 description 5
- 229910001385 heavy metal Inorganic materials 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 231100000614 poison Toxicity 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 230000020477 pH reduction Effects 0.000 description 4
- 230000007096 poisonous effect Effects 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 231100001261 hazardous Toxicity 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 235000002639 sodium chloride Nutrition 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical group C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000002956 ash Substances 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 150000002391 heterocyclic compounds Chemical class 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N monobenzene Natural products C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 2
- 230000001473 noxious effect Effects 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000012028 Fenton's reagent Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- ZMZDMBWJUHKJPS-UHFFFAOYSA-M Thiocyanate anion Chemical compound [S-]C#N ZMZDMBWJUHKJPS-UHFFFAOYSA-M 0.000 description 1
- 230000009102 absorption Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000009303 advanced oxidation process reaction Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 1
- 150000004056 anthraquinones Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000002306 biochemical method Methods 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- ZMZDMBWJUHKJPS-UHFFFAOYSA-N hydrogen thiocyanate Natural products SC#N ZMZDMBWJUHKJPS-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 230000036647 reaction Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- ORVGYTXFUWTWDM-UHFFFAOYSA-N silicic acid;sodium Chemical compound [Na].O[Si](O)(O)O ORVGYTXFUWTWDM-UHFFFAOYSA-N 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000003403 water pollutant 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
- C02F1/46—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
- C02F1/52—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
-
- 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
-
- 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
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
-
- 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
Abstract
The invention discloses a kind of preprocess method of coal chemical industrial waste water, this method includes flocculation sediment processing, hydrogen peroxide catalytic oxidation processing, Inner electrolysis processing, effluent quality COD≤500mg/L after processing, ammonia nitrogen≤200mg/L, suspended matter≤70mg/L.After the processing of the processing method of the present invention, the waste water that can carry out biochemical treatment can be obtained, which can direct emission or recycling after directly carrying out biochemical treatment.The processing system of the present invention, it is stable, it can effectively make coal chemical industrial waste water achieve the purpose that biochemical.The processing method and processing system of the coal chemical industrial waste water of the present invention have positive dissemination and significant application value.
Description
Technical field
The present invention relates to the preprocess methods and pretreatment of technical field of waste water processing more particularly to a kind of coal chemical industrial waste water
System.
Background technology
China's energy overall state is " rich coal, oil-poor, few gas ", and coal accounting in China's primary energy consumption structure reaches
To 70% or so, far above the average level in the whole world 30% or so.Therefore, abundant coal resources are China's Chemical Industry
Development provides strong condition.Coal chemical industry refers to so that coal is converted into gas, liquid, solid by chemical process using coal as raw material
The technical process of chemical industry and energy products.And as the technologies such as coal liquifaction, coal gas, coal-to-olefin make a breakthrough, China's coalification
New Coal Chemical transformation based on work forward direction oil replacement product.
But coal chemical industry enterprises have larger a water consumption and wastewater discharge, and coal chemical industry enterprises are in coal gasification, destructive distillation, net
Waste water is will produce in change and chemical products synthesis, mainly based on high concentration Coal-gas Washing Water Using.Pollutant in coal chemical industrial waste water
Concentration is high, organic components are complicated, except the inorganic pollutions beyond the region of objective existences such as ammonia, cyanogen, thiocyanate are contained, also contains phenols, Ppolynuclear aromatic
Poisonous and harmful substances, the CODcr such as compound and nitrogenous, oxygen, the heterocyclic compound of sulphur and fat compound generally exist
50000mg/L or so, ammonia nitrogen are a kind of typically poor containing organic compound difficult to degrade, biochemical property in 4000mg/L
Industrial wastewater.Therefore, if waste water is emitted into river, bank protection or permeates the ground without dealing carefully with, it will to ecology
Environment causes serious pollution, and serious harm is brought to the mankind.And with the fast development of energy industry in recent years, coal chemical industry
Waste water has become important one of pollution sources.Meanwhile coal chemical industrial waste water processing is not only related to the strong of China's Chemical Industry
Kang Fazhan and coal resources in China realize the bottleneck to raw material and fuel disease transition and upgrade.
Since biochemical method is at low cost, processing water is big, and waste water all uses the wastewater treatment based on biochemistry substantially at present
Technique.But complicated component in coal chemical industrial waste water, organism kinds are more so that intractability is big, and processing cost is high, and contained
Organic pollution is difficult to be degraded by microorganisms, and biodegradability is poor, is directly entered in biochemical treatment and not only increases biochemical treatment and meet,
And water quality is difficult to qualified discharge after biochemical treatment.Therefore, the biodegradability for improving coal chemical industrial waste water is to effectively improve coal chemical industry to give up
The key of water.
Currently, the method for improving organic wastewater with difficult degradation thereby biodegradability is more limited to, there is research to be used for carrying at present
The method of high wastewater biochemical has anaerobic acidification process, electrolysis, three kinds of Fenton reagent advanced oxidation processes.
Anaerobic acidification process be using anaerobe in coal chemical industrial waste water heterocyclic compound and polycyclic aromatic hydrocarbons (PAH) split
Solution, to open the rings such as benzene, naphthalene, the anthraquinone of aromatic hydrocarbon organic matter institute band in waste water, to improve the biodegradability of waste water.
Anaerobic acidification process needs acid condition, it is intended to hydrolyze the organic matter of the insoluble complexity of macromolecular under the action of cell ectoenzyme
At small molecule dissolubility higher fatty acids.But such anaerobic digestion, biochemical reaction is also belonged to, function and effect are by waste water
Influence of the middle noxious material to anaerobe, the especially ingredient in coal chemical industrial waste water are extremely complex, and noxious material type is more, poison
Property it is big, cause such anaerobic acidification preprocess method to fail, while its acidic environment, waste water can be influenced and enter next biochemical ring
The treatment effect in border.
Electrolysis refers to the process of that electric current causes chemical change by substance.In the treatment of waste water, some in waste water are difficult
Degradation, containing double bond, hale electron group, azo bond, phenyl ring substance be easy to be restored by electrolysis, to complete waste water life
The modification for the property changed, but the coal chemical industrial waste water that such method is big to water, it is difficult to take effect, electrode power and electrolysis range cannot
Meet water conservancy load.
Fenton method belongs to advanced chemical oxidation, will be difficult to degrade in waste water using the strong oxidizing property of the hydroxyl of hydrogen peroxide
The macromolecular of organic matter, phenyl ring class molecule destroy, and form the avirulent small organic molecule that can be utilized by microorganism.At present
Fenton method is widely studied and demonstrates in high concentrated organic wastewater process field, but the technique reagent cost is higher, system
About its industrialization promotion, and will produce a large amount of iron sludge in oxidation process, it be easy to cause secondary pollution.
Therefore, for the water quality characteristics of coal chemical industrial waste water, exploring the preprocess method for developing new coal chemical industrial waste water has
Important Engineering Guidance meaning.
Invention content
To solve the shortcomings of the prior art, the present invention provides a kind of preprocess methods of coal chemical industrial waste water, this is pre-
Processing method is easy to operate, and it is at low cost, efficient, effect is good, after method processing, coal chemical industrial waste water water quality is up to receiving pipe grade
Standard can directly carry out reuse or discharge after advanced treating, and sludge generates less in processing procedure.
To achieve the above object, the preprocess method of coal chemical industrial waste water of the invention, to improve the biodegradability of waste water
In order to subsequent biochemical processing, this method includes flocculation sediment processing, catalytic oxidation treatment, Inner electrolysis processing；
In the flocculation sediment processing, flocculant includes following parts by weight of component：Sulfonate, phosphate ester salt, lime, silicic acid
Sodium, calcium hypochlorite, sanlose, bentonite, attapulgite, volcano stone flour；
In the catalytic oxidation treatment, catalyst is made of carrier and the active component being carried on carrier, the carrier
For at least one of diatomite, zeolite, haydite, molecular sieve, the active component include silica, calcium oxide, aluminium oxide,
At least one of iron oxide, ferrous oxide, titanium dioxide；Oxidant is hydrogen peroxide.
The preprocess method of the present invention for containing the inorganic pollutions such as heavy metal and cyanogen in coal chemical industrial waste water, and is rich in
The characteristic of ammonia nitrogen in high density, SS and difficult for biological degradation and poisonous and hazardous organic matter, to waste water carry out flocculation sediment processing with
SS and part ammonia nitrogen, COD, heavy metal in waste water are removed, catalysis oxidation is carried out to waste water and Inner electrolysis is handled, utilizes the two
Synergistic effect, can effectively improve the removal rate of ammonia nitrogen in waste water, COD and cyanogen class inorganic matter and heavy metal, to realize waste water
The purpose of biodegradability makes to easily reach discharge or reuse standard by waste water of the above-mentioned processing again after biochemical treatment, effectively
Reduce the pollution to environment；In flocculation sediment processing, it is heavy that the flocculation to SS in waste water can be effectively improved using composite flocculation agent
Shallow lake ability；In catalytic oxidation treatment, active component in catalyst under aeration effect can catalyzing hydrogen peroxide generate hydroxyl from
By base, hydroxyl radical free radical has extremely strong oxidisability, can effectively decompose nearly all organic pollution difficult to degrade, or even can incite somebody to action
Organic pollution is converted into harmless inorganic matter, and reaction speed is exceedingly fast, and reaction process mud scum generates to be produced without sludge less or substantially
It is raw, non-secondary pollution, while the separation of catalyst and waste water is easier；And in Inner electrolysis processing, the organic pollution in waste water
It can be automatically electrochemically reacted in the presence of conducting medium, and oxidized reduction, absorption, flocculation sediment realization are to dirty in waste water
The decomposition for contaminating object, to improve the biodegradability of waste water.The processing method of the present invention, it is easy to operate, operating cost is low, and to useless
Water pollutant has preferable treatment effect, so that waste water is achieved the purpose that biochemical；Simultaneously hydrogen peroxide catalytic oxidation processing with
Inner electrolysis processing operation order can be exchanged arbitrarily, and the two sequence exchanges the treatment effect not interfered with to waste water, therefore the pre- place
Reason method has positive meaning and significant application value.
As the restriction to above-mentioned technical proposal, the flocculation sediment processing includes two step flocculation sediments, one step flocculation
For precipitation for pending coal chemical industrial waste water advance flocculation sediment, another step flocculation sediment is used for that treated to be useless to Inner electrolysis
Water carries out flocculation sediment；The flocculant dosage is the 0.05~0.1% of wastewater flow rate.
It is before the catalytic oxidation treatment is placed in the Inner electrolysis processing or described as the restriction to above-mentioned technical proposal
Catalytic oxidation treatment is placed in after the flocculation sediment processing for connecting the Inner electrolysis processing；The catalytic oxidation treatment includes series connection
Multigroup catalytic oxidation stage, and every group of catalytic oxidation stage reacts 0.5-2h under catalyst, hydrogen peroxide and aeration condition.
According to the difference of coal chemical industrial waste water water quality, the sequencing of can arrange hydrogen peroxide catalytic treatment and Inner electrolysis processing,
To realize better treatment effect.
As the restriction to above-mentioned technical proposal, in the Inner electrolysis processing, carried out at aeration in the presence of iron carbon filler
Reason.
As the restriction to above-mentioned technical proposal, through the preprocess method treated effluent quality COD≤500mg/L,
Ammonia nitrogen≤200mg/L, suspended matter≤70mg/L.
By the processing of the present invention, the efficient process to coal chemical industrial waste water is realized, there is significant progress.
Meanwhile the present invention also provides a kind of pretreatment systems of coal chemical industrial waste water as described above：
The pretreatment system includes the first flocculation sedimentation tank being sequentially connected, several catalysis oxidizing towers being connected in series with, interior
Cell reaction tower and the second flocculation sedimentation tank；It is equipped with and adds at the top of first flocculation sedimentation tank and the second flocculation sedimentation tank
Medicine mouth, bottom are equipped with sewage draining exit, and the dosing mouth is connect by pipeline with dosing tank；Bottom is equipped in the catalysis oxidizing tower
Micro-hole aerator, the micro-hole aerator are connected by pipeline with the air blower being set to outside catalysis oxidizing tower；
The first flocculation basin side wall is equipped with the waste water inlet being connected with pending waste water, the second flocculation basin side wall
It is equipped with liquid outlet.
The present invention also provides the pretreatment systems of another coal chemical industrial waste water as described above：
If the pretreatment system include the first flocculation basin being sequentially connected, Inner electrolysis reaction tower, the second flocculation sedimentation tank and
The dry catalysis oxidizing tower being connected in series with；It is equipped with dosing mouth at the top of first flocculation sedimentation tank and the second flocculation sedimentation tank,
Bottom is equipped with sewage draining exit, and the dosing mouth practices grade by pipeline and dosing tank；Bottom is equipped with micropore in the catalysis oxidizing tower
Aerator, the micro-hole aerator are connected by pipeline with the air blower being set to outside catalysis oxidizing tower；
The first flocculation sedimentation tank side wall is equipped with the waste water inlet that is connected with pending waste water, several to be connected in series with
It is placed in the catalysis oxidizing tower and is equipped with liquid outlet.
To coordinate the application of above-mentioned pretreatment method for wastewater, while the clean-up effect of effective guarantee waste water, the present invention also carry
Two sets of processing systems that are simple and easily manipulating are supplied, in favor of the improvement of coal chemical industrial waste water and the stable operation of processing system.
As the restriction to above-mentioned technical proposal, bottom is equipped with aerator, the aerator in the Inner electrolysis reaction tower
It is connected with the wind turbine being set to outside Inner electrolysis reaction tower by pipeline.
As the restriction to above-mentioned technical proposal, the number of the catalysis oxidizing tower is three or four.
The number of catalysis oxidizing tower can be increased or decreased according to the difference of water quality, to realize the best price/performance ratio.
COD is respectively connected with as the restriction to above-mentioned technical proposal, in the catalysis oxidizing tower and Inner electrolysis reaction tower to exist
Line monitor and ammonia nitrogen on-line computing model.
COD on-line computing models and ammonia nitrogen on-line computing model can monitor catalysis oxidizing tower and waste water in Inner electrolysis reaction tower in real time
COD and ammonia nitrogen index, in order to understand the reaction process in catalysis oxidizing tower and Inner electrolysis reaction tower in real time；In addition, with
It the waste water COD that differential responses time supervision obtains in catalysis oxidizing tower and ammonia nitrogen index can be to catalyst in catalysis oxidizing tower
Replacement provide indicative function.
In conclusion technical solution using the present invention, the wastewater treatment method of acquisition solve coal chemical industrial waste water because containing
There are the inorganic pollutions such as heavy metal and cyanogen, and is rich in ammonia nitrogen in high density, SS and difficult for biological degradation and poisonous and hazardous organic matter
And intractable problem；After preprocess method processing, the waste water that can carry out biochemical treatment can be obtained, which directly carries out
It can direct emission or recycling after biochemical treatment.The pretreatment system of the present invention, it is stable, it can effectively make coal chemical industry useless
Water achievees the purpose that biochemical.Therefore, the preprocess method and pretreatment system of coal chemical industrial waste water of the invention has actively
Dissemination and significant application value.
Description of the drawings
Fig. 1 is the connection diagram of coal chemical industrial waste water pretreatment system in the embodiment of the present invention；
Fig. 2 is the connection diagram of coal chemical industrial waste water pretreatment system in another embodiment of the present invention.
In figure：The first flocculation sedimentation tanks of 1-；2- catalysis oxidizing towers；3- Inner electrolysis reaction towers；The second flocculation sedimentation tanks of 4-.
Specific implementation mode
Below in conjunction with embodiment, technical scheme of the present invention is clearly and completely described, it is clear that described
Embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field
The every other embodiment that those of ordinary skill is obtained without making creative work, belongs to protection of the present invention
Range.
Embodiment one
The present embodiment is related to a kind of processing of coal chemical industrial waste water.
By coal chemical industrial waste water to handling in pretreatment system as described below：
It is flowed to along waste water, which includes the first flocculation sedimentation tank being sequentially connected, several catalysis being connected in series with
Oxidizing tower, Inner electrolysis reaction tower and the second flocculation sedimentation tank, in the top of first flocculation sedimentation tank and the second flocculation sedimentation tank
Portion is equipped with dosing mouth, and the dosing mouth is connect by pipeline with dosing tank, for flocculating to the first flocculation sedimentation tank and second
Flocculant is added in sedimentation basin；It is equipped with sewage draining exit in the bottom of the first flocculation sedimentation tank and the second flocculation sedimentation tank, for arranging
Go out the sediment of bottom of pond.In the catalysis oxidizing tower bottom be equipped with micro-hole aerator, the micro-hole aerator by pipeline with set
The air blower being placed in outside catalysis oxidizing tower is connected.
The first flocculation basin side wall is equipped with the waste water inlet being connected with pending waste water, the second flocculation basin side wall
It is equipped with liquid outlet.
In order to improve the treatment effect in Inner electrolysis reaction tower to pollutant, aeration is equipped in bottom in Inner electrolysis reaction tower
Device, the aerator are connected by pipeline with the wind turbine being set to outside Inner electrolysis reaction tower.The number of the catalysis oxidizing tower is
Three or four, and catalysis oxidizing tower specifically uses number to be determined with the water quality of required processing in real reaction.In addition, in urging
Change and be respectively connected with COD on-line computing models and ammonia nitrogen on-line computing model on oxidizing tower and Inner electrolysis reaction tower, is urged for monitoring in real time
The COD and ammonia nitrogen index for changing oxidizing tower and waste water in Inner electrolysis reaction tower, in order to understand catalysis oxidizing tower and Inner electrolysis in real time
Reaction process in reaction tower；And it can also root in the COD on-line computing models and ammonia nitrogen on-line computing model being arranged in catalysis oxidizing tower
The replacement of catalyst in catalysis oxidizing tower is indicated with the variation tendency in reaction time according to the index of monitoring.
In above-mentioned pretreatment system, shown in the process flow chart such as Fig. 1, to the processing of waste water as follows into
Row：
A, flocculation sediment：Flocculant is added into pending waste water, the flocculant includes sulfonate, phosphate ester salt, stone
Ash, sodium metasilicate, calcium hypochlorite, sanlose, bentonite, attapulgite, volcano stone flour, flocculant dosage are useless
The 0.1~0.05% of water, it is quiet heavy after mixing, obtain supernatant liquor.
B, hydrogen peroxide catalytic oxidation：Supernatant carries out concatenated multigroup catalytic oxidation stage, and every group of catalytic oxidation stage
In catalyst is added into supernatant, the catalyst is made of carrier and the active component being carried on carrier, and carrier is
At least one of diatomite, zeolite, haydite, molecular sieve, active component include silica, calcium oxide, aluminium oxide, oxidation
At least one of iron, ferrous oxide, titanium dioxide；Hydrogen peroxide is then added, after mixing, under aeration condition, reaction
0.5-2h。
C, Inner electrolysis：PH is carried out to the waste water obtained after step b processing and temperature is adjusted, then to iron is added in waste water
Carbon filler, and carry out aeration operation in waste water bottom.
D, flocculation sediment：Flocculant is added in through step c treated waste water, the flocculant includes sulfonate, phosphorus
Acid esters salt, lime, sodium metasilicate, calcium hypochlorite, sanlose, bentonite, attapulgite, volcano stone flour, flocculant
Dosage is the 0.1~0.05% of wastewater flow rate, quiet heavy after mixing, obtains the waste water solution of biodegradability.
Effluent quality COD≤500mg/L after processing, ammonia nitrogen≤200mg/L, suspended matter≤70mg/L make water outlet can reach
《Integrated wastewater discharge standard》Three-level discharge standard receives pipe standards, in order to carry out after subsequently carrying out biochemical treatment to the waste water
Discharge or reuse.
Embodiment two
The present embodiment is related to a kind of processing of coal chemical industrial waste water.
By coal chemical industrial waste water to handling in pretreatment system as described below：
It is flowed to along waste water, which includes the first flocculation sedimentation tank being sequentially connected, Inner electrolysis reaction tower, the second wadding
Solidifying sedimentation basin and several catalysis oxidizing towers being connected in series with, in the top of first flocculation sedimentation tank and the second flocculation sedimentation tank
It is equipped with dosing mouth, the dosing mouth is connect by pipeline with dosing tank, for heavy to the first flocculation sedimentation tank and the second flocculation
Flocculant is added in pond in shallow lake；It is equipped with sewage draining exit in the bottom of the first flocculation sedimentation tank and the second flocculation sedimentation tank, for being discharged
The sediment of bottom of pond.Bottom is equipped with micro-hole aerator in the catalysis oxidizing tower, and the micro-hole aerator passes through pipeline and setting
It is connected in the air blower outside catalysis oxidizing tower.
The first flocculation basin side wall is equipped with the waste water inlet that is connected with pending waste water, it is several be connected in series with it is described
The catalysis oxidizing tower that downstream is placed in catalysis oxidizing tower is equipped with liquid outlet.
In order to improve the pretreating effect in Inner electrolysis reaction tower to pollutant, it is equipped with and exposes in bottom in Inner electrolysis reaction tower
Gas device, the aerator are connected by pipeline with the wind turbine being set to outside Inner electrolysis reaction tower.The number of the catalysis oxidizing tower
It is three or four, and catalysis oxidizing tower specifically uses number to be determined with the water quality of required processing in real reaction.In addition, in
It is respectively connected with COD on-line computing models and ammonia nitrogen on-line computing model on catalysis oxidizing tower and Inner electrolysis reaction tower, for monitoring in real time
The COD and ammonia nitrogen index of catalysis oxidizing tower and waste water in Inner electrolysis reaction tower, in order to understand catalysis oxidizing tower and interior electricity in real time
Solve the reaction process in reaction tower；And may be used also in the COD on-line computing models and ammonia nitrogen on-line computing model being arranged in catalysis oxidizing tower
The replacement of catalyst in catalysis oxidizing tower is indicated with the variation tendency in reaction time according to the index of monitoring.
In above-mentioned processing system, shown in the process flow chart such as Fig. 2, the processing of waste water is carried out as follows：
A, flocculation sediment：Flocculant is added into pending waste water, the flocculant includes sulfonate, phosphate ester salt, stone
Ash, sodium metasilicate, calcium hypochlorite, sanlose, swelling part, attapulgite, volcano stone flour, flocculant dosage are useless
The 0.1~0.05% of water, it is quiet heavy after mixing, obtain supernatant liquor.
B, Inner electrolysis：PH is carried out to supernatant and temperature is adjusted, then to addition iron carbon filler in waste water, and in waste water bottom
Portion carries out aeration operation.
C, flocculation sediment：Flocculant is added in through step b treated waste water, the flocculant includes sulfonate, phosphorus
Acid esters salt, lime, sodium metasilicate, calcium hypochlorite, sanlose, bentonite, attapulgite, volcano stone flour, flocculant
Dosage is the 0.1~0.05% of wastewater flow rate, quiet heavy after mixing, obtains supernatant.；
D, hydrogen peroxide catalytic oxidation：Concatenated multigroup catalysis oxidation step is carried out to the supernatant obtained after step c processing
Suddenly, catalyst and in every group of catalytic oxidation stage is added into supernatant, the catalyst is by carrier and is carried on carrier
Active component constitute, carrier is diatomite, zeolite, haydite, at least one of molecular sieve, and active component includes titanium dioxide
At least one of silicon, calcium oxide, aluminium oxide, iron oxide, ferrous oxide, titanium dioxide；Hydrogen peroxide is then added, is uniformly mixed
Afterwards, under aeration condition, 0.5-2h is reacted.
Effluent quality COD≤500mg/L after processing, ammonia nitrogen≤200mg/L, suspended matter≤70mg/L make water outlet can reach
《Integrated wastewater discharge standard》Three-level discharge standard receives pipe standards, in order to carry out after subsequently carrying out biochemical treatment to the waste water
Discharge or reuse.
In conclusion the pretreatment method for wastewater of the present invention, solves coal chemical industrial waste water because containing nothings such as heavy metal and cyanogen
Machine pollutant, and the intractable problem rich in ammonia nitrogen in high density, SS and difficult for biological degradation and poisonous and hazardous organic matter；Through
After preprocess method processing, the waste water that can carry out biochemical treatment can be obtained, which can be direct after directly carrying out biochemical treatment
Discharge or recycling.The pretreatment system of the present invention, it is stable, pair it can effectively make coal chemical industrial waste water reach biochemical
Purpose.Therefore, the processing method and processing system of coal chemical industrial waste water of the invention has positive dissemination and significantly answers
With value.
Claims (10)
1. a kind of preprocess method of coal chemical industrial waste water, to improve the biodegradability of waste water in order to subsequent biochemical processing,
It is characterized in that, this method includes flocculation sediment processing, catalytic oxidation treatment, Inner electrolysis processing；
In the flocculation sediment processing, flocculant includes following components：Sulfonate, phosphate ester salt, lime part, sodium metasilicate, secondary chlorine
Sour calcium, sanlose, bentonite, attapulgite, volcano stone flour；
In the catalytic oxidation treatment, catalyst is made of carrier and the active component being carried on carrier, and the carrier is silicon
At least one of diatomaceous earth, zeolite, haydite, molecular sieve, the active component include silica, calcium oxide, aluminium oxide, oxidation
At least one of iron, ferrous oxide, titanium dioxide；Oxidant is hydrogen peroxide.
2. the preprocess method of coal chemical industrial waste water according to claim 1, it is characterised in that：The flocculation sediment processing packet
Two step flocculation sediments are included, one step flocculation sediment is used to first carry out flocculation sediment, another step flocculation to pending coal chemical industrial waste water
Precipitation to Inner electrolysis treated waste water for carrying out flocculation sediment；
The flocculant dosage is the 0.05~0.1% of wastewater flow rate.
3. the preprocess method of coal chemical industrial waste water according to claim 1, it is characterised in that：The catalytic oxidation treatment is set
Before Inner electrolysis processing or the catalytic oxidation treatment is placed in the Inner electrolysis and handles the flocculation sediment in downstream and handles it
Afterwards；
The catalytic oxidation treatment includes concatenated multigroup catalytic oxidation stage, and every group of catalytic oxidation stage is in catalyst, double
0.5-2h is reacted under the presence of oxygen water and aeration condition.
4. the preprocess method of coal chemical industrial waste water according to claim 1, it is characterised in that：In the Inner electrolysis processing,
Air Exposure is carried out in the presence of iron carbon filler.
5. the preprocess method of coal chemical industrial waste water according to claim 1, it is characterised in that：It is handled through the preprocess method
Effluent quality COD≤500mg/L afterwards, ammonia nitrogen≤200mg/L, suspended matter≤70mg/L.
6. a kind of pretreatment system of coal chemical industrial waste water as described in claim 1, it is characterised in that：
The pretreatment system includes the first flocculation sedimentation tank being sequentially connected, several catalysis oxidizing towers being connected in series with, Inner electrolysis
Reaction tower and the second flocculation sedimentation tank；It is equipped with dosing mouth at the top of first flocculation sedimentation tank and the second flocculation sedimentation tank,
Bottom is equipped with sewage draining exit, and the dosing mouth is connect by pipeline with dosing tank；Bottom is equipped with micropore in the catalysis oxidizing tower
Aerator, the micro-hole aerator are connected by pipeline with the air blower being set to outside catalysis oxidizing tower；
The first flocculation basin side wall is equipped with the waste water inlet being connected with pending waste water, is set on the second flocculation basin side wall
There is liquid outlet.
7. a kind of pretreatment system of coal chemical industrial waste water as described in claim 1, it is characterised in that：
The pretreatment system includes the first flocculation basin being sequentially connected, Inner electrolysis reaction tower, the second flocculation sedimentation tank and several strings
Join the catalysis oxidizing tower of connection；It is equipped with dosing mouth, bottom at the top of first flocculation sedimentation tank and the second flocculation sedimentation tank
It is equipped with sewage draining exit, the dosing mouth practices grade by pipeline and dosing tank；Bottom is equipped with micro-pore aeration in the catalysis oxidizing tower
Device, the micro-hole aerator are connected by pipeline with the air blower being set to outside catalysis oxidizing tower；
The first flocculation sedimentation tank side wall is equipped with the waste water inlet that is connected with pending waste water, it is several be connected in series with it is described
The catalysis oxidizing tower that downstream is placed in catalysis oxidizing tower is equipped with liquid outlet.
8. the pretreatment system of the coal chemical industrial waste water described according to claim 6 or 7, it is characterised in that：The Inner electrolysis reaction
Bottom is equipped with aerator in tower, and the aerator is connected by pipeline with the wind turbine being set to outside Inner electrolysis reaction tower.
9. the pretreatment system of the coal chemical industrial waste water described according to claim 6 or 7, it is characterised in that：The catalysis oxidizing tower
Number be three or four.
10. the pretreatment system of the coal chemical industrial waste water described according to claim 6 or 7, it is characterised in that：The catalysis oxidizing tower
With COD on-line computing models and ammonia nitrogen on-line computing model are respectively connected on Inner electrolysis reaction tower.
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