CN106830449A - Effectively reduce the method and its processing system of chemical nickle-plating wastewater pollutant - Google Patents
Effectively reduce the method and its processing system of chemical nickle-plating wastewater pollutant Download PDFInfo
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- CN106830449A CN106830449A CN201710020515.1A CN201710020515A CN106830449A CN 106830449 A CN106830449 A CN 106830449A CN 201710020515 A CN201710020515 A CN 201710020515A CN 106830449 A CN106830449 A CN 106830449A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 151
- 238000000034 method Methods 0.000 title claims abstract description 59
- 238000007747 plating Methods 0.000 title claims abstract description 52
- 239000000126 substance Substances 0.000 title claims abstract description 50
- 239000003344 environmental pollutant Substances 0.000 title claims abstract description 35
- 231100000719 pollutant Toxicity 0.000 title claims abstract description 35
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 75
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 44
- 238000005189 flocculation Methods 0.000 claims abstract description 38
- 230000016615 flocculation Effects 0.000 claims abstract description 38
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 34
- 239000011574 phosphorus Substances 0.000 claims abstract description 34
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 33
- 238000004062 sedimentation Methods 0.000 claims abstract description 31
- 229910001453 nickel ion Inorganic materials 0.000 claims abstract description 25
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 24
- 235000011007 phosphoric acid Nutrition 0.000 claims abstract description 21
- 238000001556 precipitation Methods 0.000 claims abstract description 21
- ACVYVLVWPXVTIT-UHFFFAOYSA-N phosphinic acid Chemical compound O[PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-N 0.000 claims abstract description 20
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000002245 particle Substances 0.000 claims abstract description 13
- 230000003647 oxidation Effects 0.000 claims abstract description 10
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 10
- 230000008093 supporting effect Effects 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 58
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 35
- 230000008569 process Effects 0.000 claims description 23
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical group OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 22
- 230000001105 regulatory effect Effects 0.000 claims description 21
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 20
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 239000012535 impurity Substances 0.000 claims description 16
- 230000035484 reaction time Effects 0.000 claims description 15
- 239000013049 sediment Substances 0.000 claims description 15
- -1 wherein Substances 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 229910052760 oxygen Inorganic materials 0.000 claims description 12
- 239000001301 oxygen Substances 0.000 claims description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 11
- 238000000926 separation method Methods 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 229910019142 PO4 Inorganic materials 0.000 claims description 8
- 239000008187 granular material Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- BFDHFSHZJLFAMC-UHFFFAOYSA-L nickel(ii) hydroxide Chemical compound [OH-].[OH-].[Ni+2] BFDHFSHZJLFAMC-UHFFFAOYSA-L 0.000 claims description 8
- 229920002401 polyacrylamide Polymers 0.000 claims description 8
- 239000006228 supernatant Substances 0.000 claims description 8
- 239000000701 coagulant Substances 0.000 claims description 7
- 239000011790 ferrous sulphate Substances 0.000 claims description 7
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 7
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims description 7
- 239000001257 hydrogen Substances 0.000 claims description 7
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 claims description 7
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 7
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 7
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 claims description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 6
- 239000004743 Polypropylene Substances 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
- 235000014413 iron hydroxide Nutrition 0.000 claims description 6
- 229910000399 iron(III) phosphate Inorganic materials 0.000 claims description 6
- 239000007800 oxidant agent Substances 0.000 claims description 6
- 230000001590 oxidative effect Effects 0.000 claims description 6
- 229920001155 polypropylene Polymers 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 150000001768 cations Chemical class 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 5
- 230000007062 hydrolysis Effects 0.000 claims description 5
- 238000006460 hydrolysis reaction Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 5
- 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 5
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 5
- 239000010452 phosphate Substances 0.000 claims description 5
- 238000006116 polymerization reaction Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 claims description 3
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical group [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 229910052738 indium Inorganic materials 0.000 claims 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims 1
- 239000005864 Sulphur Substances 0.000 claims 1
- 239000003292 glue Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 6
- 239000005416 organic matter Substances 0.000 abstract description 6
- 230000001112 coagulating effect Effects 0.000 abstract description 5
- 238000001914 filtration Methods 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 abstract description 2
- 230000000536 complexating effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 11
- 239000012528 membrane Substances 0.000 description 6
- 238000005342 ion exchange Methods 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 230000001925 catabolic effect Effects 0.000 description 2
- 238000009388 chemical precipitation Methods 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 239000008139 complexing agent Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 241000192700 Cyanobacteria Species 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000001506 calcium phosphate Substances 0.000 description 1
- 229910000389 calcium phosphate Inorganic materials 0.000 description 1
- 235000011010 calcium phosphates Nutrition 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 238000000909 electrodialysis Methods 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
- 238000004065 wastewater treatment Methods 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
-
- 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
- C02F1/72—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
- 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
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
- C02F2001/46133—Electrodes characterised by the material
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- 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
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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- 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
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- 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
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
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- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
A kind of low and non-secondary pollution method and its processing system that can effectively reduce chemical nickle-plating wastewater pollutant that consume energy.It passes through three-dimensional electrolysis technology, and by the oxidation operation in chemical degree nickel waste water, the nickel ion of complexing is released, and hypophosphorous acid, phosphorous acid are oxidized to orthophosphoric acid；Reacted by electric flocculation, organic matter, hypophosphorous acid, phosphorous acid are further oxidized, acted on by the flocculation of electric flocculation and air supporting, the nickel ion and orthophosphoric acid root of free form are deposited；Finally by coagulating sedimentation, nickel ion, phosphorus in waste water are removed, and precipitation particle is formed completely, and after filtering, chemical nickle-plating wastewater pollutant reaches discharge standard to the waste water after treatment.Pollutant is all controlled during it can make chemical nickle-plating wastewater, and it is continual and steady reach discharging standards, nickeliferous, phosphorus mud after treatment is post-processed again, can effectively reclaim nickel, phosphorus.Pollutant cannot last up to target problem during it can thoroughly solve chemical nickle-plating wastewater.
Description
Technical field
The present invention relates to a kind of chemical nickle-plating wastewater pollutant catabolic gene method and processing unit, more particularly to one kind can be effective
Reduce the method for the pollutant and the processing system of use.
Background technology
Chemical nickel plating is a kind of process for treating surface for effectively improving workpiece corrosion resistance and wearability, widely should
With, but chemical nickel plating produces the pollutant comprehensive wastewaters such as substantial amounts of nickel containing complex pattern, phosphorus, organic matter.Nickel is a kind of poisonous
Heavy metal, nickel-containing waste water can not only threaten aquatile to survive after entering water body, and be adsorbed and food chain by animals and plants
Enrichment, finally endangers human health.Phosphorus, organic matter are the nutrients of water body, cause body eutrophication, make pasture and water and blue-green algae
Deng aquatile amount reproduction, the oxygen dissolved in consumption water forces the biology such as fish dead because of anoxic.Therefore, chemical nickel plating
Waste water severe contamination ecological environment, simply and effectively pollutant has become the key in chemical plating in control chemical nickle-plating wastewater
Problem.
At present, the treatment main method both at home and abroad to chemical nickle-plating wastewater has following several：Chemical precipitation method, absorption method,
Electroosmose process, ion-exchange, membrane separation process and evaporation concentration method etc..
Chemical precipitation method, mainly by the pH value that alkali adjusts waste water is added in water body, then being caught in addition heavy metal
In the case of catching agent, coagulant and flocculant are added, preliminary separation of solid and liquid is realized by precipitation, using the treatment heel row such as filtering
Put.But the method can only process the nickel ion of free state in water body, precipitation, utilization rate cannot be realized for the nickel of complex pattern
It is low, and can not thoroughly effective organics removal and phosphorus, pollutant catabolic gene not exclusively, so as to qualified discharge can not be met
It is required that.
Absorption method, is that solute is concentrated by the way that selective physics chemical action is preferential in the surface of solids.Frequently with suction
Attached dose is activated carbon etc., the method can only adsorbed water body intermediate ion state nickel, can not be adsorbed for the nickel containing organic complex state so that
Pollutant discharge in compliance with the standard requirement can not be met.
Electroosmose process, is the effect by drawing electric field and pellicle so that the anions and canons in water body are by semi-transparent
Film, migrates, to different electrode directions so as to reach the purpose for purifying water.Electrodialysis process must produce a certain amount of dense
Water, it is impossible to realize waste water items pollutant whole qualified discharge, the concentrated water of generation must be processed further, complex process, into
This height.
Ion-exchange, is using the commutative group in ion-exchanger and various interionic ion exchanges in solution
The difference of ability is come a kind of separate method.But after the nickel ion in chemical nickle-plating wastewater is complexed with complexing agent, ten
Divide stabilization, it is impossible to removed it by ion-exchange, therefore easily cause waste water exceeded in deliquescent complex state nickel, equally
Removal effect to organic matter and phosphorus is not good.
Membrane separation technique, is to be separated solution using a kind of special pellicle, with pressure as driving force, when waste water is flowed through
During face, pollutant therein is trapped, and hydrone passes through film, and waste water is purified.Membrane separation process can not only remove nothing
Organic pollutants matter, and also have good removal effect to the organic pollution materials in waste water.Compared to Conventional waste water treatment technology,
Membrane technology have the advantages that energy-conservation, efficiently, without phase transformation, equipment is simple, it is small, easy to operate to take up an area：Its need not add chemical reagent,
Do not result in secondary pollution and the recovery of heavy metal can be realized, therefore, there is very big application potential, hair in sewage disposal
Exhibition prospect is very wide, but the method there are problems that expensive membrane module and fouling membrane,.
Evaporation concentration method, is, by heating, waste water is reached boiling point, and the volatile components such as moisture in water body are by evaporation
With condensation so as to be separated.It is high to equipment requirement using the method, it is necessary to use thermal source, process high energy consumption.
In sum, due in chemical nickle-plating wastewater nickel exist with complex pattern, intractability is high, hypophosphorous acid, phosphorous acid
Oxidation, also substantial amounts of organic matter complexing agent, high cod values are needed, it is necessary to aoxidize, therefore the treatment of chemical nickle-plating wastewater is stranded very much
Difficulty, can not all reach good treatment effect, it is impossible to reach national grade one discharge standard (Ni using conventional method2+<
0.1ppm,P<0.5ppm,COD<50ppm), therefore, conventional processing method easily produces secondary pollution to environment in the prior art,
The resource of consumption is also higher simultaneously.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of power consumption and low and non-secondary pollution can effectively reduce chemistry
The method of nickel-plating waste water pollutant and the processing system for being used.
To solve the above problems, the technical solution adopted by the present invention is：
Effective method for reducing chemical nickle-plating wastewater pollutant of the invention, performs following steps：
Step 1,1# regulating reservoirs are pumped into by chemical nickle-plating wastewater, adjust its pH value to 4-6 and pump into added with granule electrode and
It is connected with the electrolysis installation of compressed air, the reactive hydroxyl radical (OH) of high content is generated using three-dimensional electrolysis method, uses
To aoxidize nickeliferous, the phosphorus-containing matter that exist with complex state in the waste water so that nickel ion therein be released to free state nickel from
Son, hypophosphorous acid therein, phosphorous acid is oxidized to orthophosphoric acid；
Step 2, the waste water after three-dimensional electrolysis are processed is entered in 2# regulating tanks, and substantial amounts of metal is made using electro-flucculation process
Cation is dissolved in the waste water, and various hydroxo complexes, multinuclear hydroxo complex are formed through series hydrolysis and polymerization, makes the waste water
In free state nickel ion and orthophosphoric acid form precipitation matter based on colloidal state impurity and/or suspended particulate cohesion, association it is outstanding
Float forms the scum layer swum on the water surface under the air supporting effect of hydrogen and oxygen；
Step 3, the waste water after electro-flucculation process is processed enters mixed mud sedimentation basin, adds with ferrous sulfate, polyaluminium
One or more combination in coagulant based on aluminium and ferric sulfate, makes the colloidal state impurity and/or suspended particulate constantly grow up
Into big colloidal solid；
Step 4, the waste water containing big colloidal solid is entered in flocculation basin, is added with polyacrylamide, aluminium polychloride
With ferric sulfate based on flocculant in one or more combination, accelerate the colloidal state impurity and/or suspended particulate formed and included
The speed of iron hydroxide, nickel hydroxide and/or phosphate in interior sediment；
Step 5, the waste water containing the sediment is entered into sedimentation basin carries out mud-water separation, and recovery sediment simultaneously will be up to standard
Waste water normal discharge.
Nickel-plating waste water for phosphorus content higher than 1000mg/L, following steps are increased between the step 2 and step 3,
To eliminate the phosphorus in surplus hypophosphorous acid and phosphorous acid：
1) waste water after electro-flucculation process is processed enters deep reaction dephosphorization pond；
2) to addition dephosphorization agent and oxidant in the deep reaction dephosphorization pond, reaction time 30-60min, the dephosphorization agent
Addition is 10-15 times of remaining phosphorus concentration in the waste water, and the oxidant is hydrogen peroxide, and its addition is remaining phosphorus in the waste water
10 times of concentration；
3) waste water after deep phosphorous removal is entered the treatment for continuing the step 3 in described mixed mud sedimentation basin.
The three-dimensional electrolysis method is：
1) granule electrode is iron carbon ball particle or activated carbon；
2) to being passed through compressed air in electrolysis installation；
3) it is 7-100mA/cm to use current density2, 60-120min of cell reaction time；
4) described reactive hydroxyl radical (OH) is produced, production is as follows：
O2+2H++2e→H2O2 (1)
H2O2+Fe2+→·OH+HO-+Fe3+ (2)
Fe3++e→Fe2+ (3)
5) described free state nickel ion and orthophosphoric acid is generated.
The electro-flucculation process is：
1) carried out in electric flocculation reactor, negative electrode therein and anode use metallic iron；
2) pulse power is used, current density is 1-5mA/cm2, 15-60min of cell reaction time；
3) generation includes various hydroxo complexes, the hydroxide of multinuclear hydroxo complex, and the hydroxide is Fe
(H2O)6 3+、Fe(H2O)5(OH)2+、Fe(H2O)4(OH)2+And Fe2(H2O)8(OH)2 2+, production is as follows：
Anode：Fe-2e-→Fe2+ (4)
Negative electrode：H2O+2e→H2↑+2OH- (5)
The Fe of generation3+PO in solution4 3-, reaction generation FePO4Precipitation,
Fe3++PO4 3-→FePO4↓ (6)
4) it is not less than under conditions of 4 in pH, Fe3+Fe (OH) can be precipitated as3Flco.
In every liter of waste water, in 0.25-1.1g/L, pH value is not less than 11, reaction time 5- to described ferrous sulfate consumption
30min。
In every liter of waste water, in 0.1-0.4g/L, pH value is not less than 11, reaction time 10- to described polyacrylamide consumption
30min
Nickel content is in 50-5000mg/L in the chemical nickle-plating wastewater；Phosphorus content is in 200-30000mg/L；Total COD exists
400-50000mg/L。
Effective processing system for reducing chemical nickle-plating wastewater pollutant of the invention, is adjusted by wastewater collection pond, 1# successively
Pond, three-dimensional electrolysis reactor, 2# regulating reservoirs, electric flocculation reactor, deep reaction dephosphorization pond, mixed mud sedimentation basin, flocculation basin, precipitation
Pond and supernatant water removal pond composition, wherein,
Wastewater collection pond, is used to collect nickel content in 50-5000mg/L；Phosphorus content is in 200-30000mg/L；Total COD exists
The chemical nickle-plating wastewater of 400-50000mg/L；
1# regulating reservoirs, the regulating reservoir using polypropylene (pp) will pump into the chemical nickle-plating wastewater in the pond pH value adjust to
4-6；
Three-dimensional electrolysis reactor, including anode, negative electrode, the granule electrode that is filled between anode and negative electrode and compressed air
Structure for conveying, it will pump into the reactive hydroxyl radical that chemical nickle-plating wastewater therein generates high content using three-dimensional electrolysis method
(OH), it is used to aoxidize nickeliferous, the phosphorus-containing matter existed with complex state in the waste water, so that nickel ion therein is released to certainly
By state nickel ion, hypophosphorous acid therein, phosphorous acid is set to be oxidized to orthophosphoric acid；
2# regulating reservoirs, the regulating reservoir uses polypropylene, will pump into the pond by the chemical nickel plating after three-dimensional electrolysis treatment
Waste water is sufficiently mixed uniformly；
Electric flocculation reactor, in substantial amounts of metal cation is dissolved in the waste water using electro-flucculation process, hydrolyzes through series
Various hydroxo complexes, multinuclear hydroxo complex are formed with polymerization, free state nickel ion and orthophosphoric acid in the waste water is formed
Precipitation matter based on colloidal state impurity and/or suspended particulate cohesion, the suspension of association is under the air supporting effect of hydrogen and oxygen
Formation swims in the scum layer on the water surface；
Deep reaction dephosphorization pond, by the waste water after three-dimensional electrolysis and electric flocculation treatment, using addition dephosphorization agent and peroxidating
The method of hydrogen, aoxidizes minimal amount of hypophosphorous acid, phosphorous acid, by after deep oxidation, remaining hypophosphorous acid, phosphorous acid quilt in waste water
Orthophosphoric acid is oxidized to, is removed by the precipitation method；
Mixed mud sedimentation basin, the waste water after electro-flucculation process is processed enters mixed mud sedimentation basin, adds based on ferrous sulfate
Coagulant, the colloidal state impurity and/or suspended particulate is constantly grown up；
Flocculation basin, the waste water containing big colloidal solid is entered in flocculation basin, adds the flocculation based on polyacrylamide
Agent, accelerates the colloidal state impurity and/or suspended particulate forms heavy comprising iron hydroxide, nickel hydroxide and/or phosphate
The speed of starch；
Sedimentation basin, supernatant water removal pond, the waste water containing the sediment is entered into sedimentation basin carries out mud-water separation, reclaims
Sediment and by waste water normal discharge up to standard.
In the three-dimensional electrolysis reactor, negative electrode is placed in electrolytic cell centre position, and two ends are set to plate, pole plate it
Between particle filled composite electrode, water and compressed air enter by the bottom of electrolytic cell respectively, the water outlet by the way of overflow.
Compared with prior art, the present invention passes through three-dimensional electrolysis technology, by the oxidation operation in chemical degree nickel waste water, network
The nickel ion of conjunction is released, and hypophosphorous acid, phosphorous acid are oxidized to orthophosphoric acid；Reacted by electric flocculation, organic matter, hypophosphorous acid, Asia
Phosphoric acid is further oxidized, and is acted on by the flocculation of electric flocculation and air supporting, the nickel ion and orthophosphoric acid root quilt of free form
Precipitation；Finally by coagulating sedimentation, nickel ion, phosphorus in waste water are removed, and precipitation particle is formed completely, the waste water warp after treatment
After filtering, chemical nickle-plating wastewater pollutant reaches discharge standard.Pollutant is all obtained during the present invention can make chemical nickle-plating wastewater
Control, and it is continual and steady reach discharging standards, nickeliferous, phosphorus mud after treatment is post-processed again, can be effective
Reclaim nickel, phosphorus.Pollutant cannot last up to target problem during the present invention can thoroughly solve chemical nickle-plating wastewater.
It is characteristic of the invention that：
1) reagent that the pollutant in degrading waste water is mainly used is electronics, without medicament non-secondary pollution, green ring
Protect；
2) electrocatalytic oxidation is used, sludge quantity is few；
3) reacted under normal temperature and pressure conditionses；
4) equipment operation is simple, and floor space is few, low cost.
Brief description of the drawings
Fig. 1 is processing system handling process block diagram of the invention.
Specific embodiment
As shown in figure 1, effective processing system for reducing chemical nickle-plating wastewater pollutant of the invention, by following equipment structure
Into respectively wastewater collection pond, 1# regulating reservoirs, three-dimensional electrolysis reactor, 2# regulating reservoirs, electric flocculation reactor, deep reaction are removed
Phosphorus pond, mixed mud sedimentation basin, flocculation basin, sedimentation basin and supernatant water removal pond, wherein each equipment role is as follows：
1st, wastewater collection pond, is used to collect nickel content in 50-5000mg/L；Phosphorus content is in 200-30000mg/L；Total COD
In the chemical nickle-plating wastewater of 400-50000mg/L.
2nd, 1# regulating reservoirs, the pond is pumped into by above-mentioned chemical nickle-plating wastewater, adds polypropylene (pp) that the chemical nickel plating gives up
The pH value of water is adjusted to 4-6.
3rd, three-dimensional electrolysis reactor, it includes electrolytic cell and the minus plate, positive plate and the particle electricity that are placed in the electrolytic cell
Pole.
Minus plate and positive plate are graphite electrode.Minus plate is placed in the centre position of electrolytic cell, in the both sides of minus plate
Respectively set one piece of positive plate, the granule electrode is from iron carbon ball particle or activated carbon and is filled between positive plate and minus plate.
Compressed air and the waste water from 1# regulating reservoirs are entered by the bottom of electrolytic cell respectively, are gone out by the way of overflow
Water.The structure can ensure that residence time of the chemical nickle-plating wastewater in three-dimensional electrolysis reactor, make it have that disposal ability is big, place
The advantages of reason efficiency high.
Coagulation, processing method are carried out to waste water therein using three-dimensional electrolysis technology in the three-dimensional electrolysis reactor
And principle is as follows：
1) it is 7-100mA/cm to use current density2, 60-120min of cell reaction time；Given birth to by three-dimensional electrolysis method
Into the reactive hydroxyl radical (OH) of high content, it is used to aoxidize nickeliferous, the phosphorus-containing matter existed with complex state in the waste water,
So that nickel ion therein is released to free state nickel ion, hypophosphorous acid therein, phosphorous acid is oxidized to orthophosphoric acid.
2) principle：
Granule electrode is a kind of efficient, nontoxic and cheap graininess proprietary material, and they are filled as working electrode
Three-diemsnional electrode is formed between two plate electrodes (anode and minus plate).Compressed air is by the porous plate of reactor bottom to this
Reactor is provided.
In Electrochemical Reactor with Three-dimensional Electrode reactor, hydroxyl radical free radical is produced according to following electrochemical reaction mechanism：
O2+2H++2e→H2O2 (1)
H2O2+Fe2+→·OH+HO-+Fe3+ (2)
Fe3++e→Fe2+ (3)
First, oxygen produces hydrogen peroxide on negative electrode by two electron reductions, and the hydrogen peroxide of generation is molten with waste water rapidly
Fe present in liquid2+Reaction produces OH (hydroxyl radical free radical) and Fe3+.Due to Fe3+Reduction potential compared with O2Initial reduction electricity
Position just, therefore Fe3+Can be on negative electrode in O2Reduction process in reducing/regenerating be Fe2+.Oxygen needed for reacting above is by being passed through this
The compressed air in reactor is provided.Molecular oxygen has played great role in electro-oxidation process, on the one hand by capturing electricity
Son produces hydrogen peroxide, on the other hand, increased the mass transfer effect of OH and other reactants.OH has very strong energy of oxidation
Power (2.8V), is only second to the oxidability (2.87V) of fluorine, and oxidation operation can be directly CO by it2And H2O, hypophosphorous acid, Asia
Phosphoric acid is oxidized to orthophosphoric acid, is released so as to reach nickel ion, reduces the effect of COD and dephosphorization.
4th, 2# regulating reservoirs, will pump into the pond by after coagulation (i.e. by the waste water after three-dimensional electrolysis technical finesse)
Waste water to pump into and add polypropylene in the pond and be sufficiently mixed uniformly, during the waste water of mixing pumped into electric flocculation reactor afterwards.
After mixing through 2# regulating reservoirs, it is ensured that water quality is uniform and stable before waste water enters electric flocculation reactor.
5th, electric flocculation reactor：Anode and cathode material in the reactor is iron, and using the pulse power, waste water is by reaction
Device bottom flows into, top outflow, while sudden and violent vapour, increases useless water oxygen level.
Two stage treatment is carried out to waste water therein using electric flocculation technique in the reactor, processing method and principle are such as
Under：
1) it is 1-5mA/cm to use current density2, 15-60min of cell reaction time and in the reactor use metal
Iron makees the anode of electrolysis installation；In substantial amounts of metal cation is dissolved in the waste water, various hydroxyls are formed through series hydrolysis and polymerization
Base complex, multinuclear hydroxo complex, make free state nickel ion and orthophosphoric acid in the waste water be formed with colloidal state impurity and/or hanged
Precipitation matter based on floating particles cohesion, the suspension of association is formed under the air supporting effect of hydrogen and oxygen and swum on the water surface
Scum layer.
2) principle
Electric flocculation is that, with metals such as iron as anode, in the presence of additional power source, anode is dissoluted, and produces substantial amounts of metal
Cation is dissolved in water, through a series of hydrolysis, polymerization and ferrous oxidation process, forms various hydroxo complexes, multinuclear hydroxyl
Complex compound can form following complex compound down to hydroxide, such as iron ion：Fe(H2O)6 3+、Fe(H2O)5(OH)2+、Fe(H2O)4
(OH)2+And Fe2(H2O)8(OH)2 2+Deng so that the coagulative precipitation such as colloidal state impurity, suspended particulate in waste water and separate.
In electrolytic process, negative electrode and anode endlessly produce the micro-bubble of hydrogen and oxygen, and these bubbles are in floating-upward process
Role takes suspension to the water surface and forming scum layer on the water surface enables pollutant to go similar to air supporting effect
Remove.
During electric flocculation, there is the pollutant that the effect of three aspects can remove in waste water in reactor simultaneously：(1)
Electrolysis oxidation-reduction is acted on；(2) electrolytic flocculation effect；(3) electrofloatation effect.Its electrode reaction is as follows：
Anode：Fe-2e-→Fe2+ (4)
Negative electrode：H2O+2e→H2↑+2OH- (5)
The Fe of generation3+PO in solution4 3-Reaction, generates FePO4Precipitation, reaches drop phosphorus effect well.
Fe3++PO4 3-→FePO4↓ (6)
It is more than under conditions of 4 in pH, Fe3+Fe (OH) can be precipitated as3Flco, has flocculation to sediment in waste water, because
This has good removal effect to pollutant.
6th, deep reaction dephosphorization pond, is directed to plating of the phosphorus content higher than 1000mg/L in the chemical nickle-plating wastewater of initial collection
The deep phosphorous removal treatment that nickel waste water is just carried out, it can further eliminate the phosphorus in surplus hypophosphorous acid and phosphorous acid.
1) using addition dephosphorization agent and the method for hydrogen peroxide, continue to aoxidize remaining hypophosphorous acid and phosphorous acid, through too deep
After degree oxidation, remaining hypophosphorous acid, phosphorous acid are oxidized to orthophosphoric acid in waste water, are removed by the precipitation method.
2) deep phosphorous removal flow；
1) waste water (waste water after being processed through electric flocculation technique) after two stage treatment is entered in deep reaction dephosphorization pond；
2) to addition dephosphorization agent and oxidant in the deep reaction dephosphorization pond, reaction time 30-60min, the dephosphorization agent
Addition is 10-15 times of remaining phosphorus concentration in two stage treatment waste water, and the oxidant is hydrogen peroxide, and its addition is at two grades
Contain 10 times of remaining phosphorus concentration in the waste water of big colloidal solid in reason waste water；
3) waste water after deep phosphorous removal is entered into mixed mud sedimentation basin.
7th, mud sedimentation basin is mixed, the mixed mud sedimentation basin uses pp materials, is designed as cylinder, waste water is flowed into from bottom, top
Outflow.
Waste water after waste water or deep phosphorous removal after two stage treatment is entered in mixed mud sedimentation basin carries out tertiary treatment.
Add one or more combination in the coagulant based on ferrous sulfate, aluminium polychloride and ferric sulfate, every liter
In waste water, in 0.25-1.1g/L, the pH value of the waste water is not less than 11, reaction time 5-30min to preferably sulfuric acid ferrous iron consumption.Make
The colloidal state impurity and/or the continuous big colloidal solid of great achievement long of suspended particulate.
8th, flocculation basin, the waste water (containing the waste water of the big colloidal solid) after tertiary treatment is entered in flocculation basin
The treatment of row level Four.
One or more combination in the flocculant based on polyacrylamide, aluminium polychloride and ferric sulfate is added, often
Rise in waste water, in 0.1-0.4g/L, the pH value of the waste water is not less than 11, reaction time 10- to preferably polyacrylamide consumption
30min, accelerates the colloidal state impurity and/or suspended particulate is formed comprising iron hydroxide, nickel hydroxide and/or phosphate
The speed of sediment.
Above-mentioned mixed mud sedimentation basin is summarized as coagulating sedimentation technology, the mesh of coagulating sedimentation technical finesse with the flow in flocculation basin
, it is the waste water iron ion that (i.e. three-dimensional electrolysis reaction and electric flocculation are reacted) produces after I and II treatment is generated hydroxide
Iron particle, nickel ion forms nickel hydroxide particle, orthophosphoric acid and forms sediment, and iron hydroxide is in itself a kind of coagulant, can
Nickel hydroxide particle and calcium phosphate precipitation are caught, in the presence of coagulant, flocculant is added, precipitation particle is constantly grown up, most
Mud-water separation, standard water discharge afterwards.
9th, sedimentation basin, supernatant water removal pond, will be containing the sediment (i.e. comprising iron hydroxide, nickel hydroxide and/or phosphorus
Hydrochlorate is in interior sediment) waste water (waste water i.e. after level Four treatment) enter sedimentation basin and carry out mud-water separation, the sedimentation time exists
60-120min, filtration system is directly discharged into by supernatant therein, and a small amount of suspension in supernatant is removed using filtration system
Thing, Pollutants in Wastewater is controlled, then by recycling precipitate, so far, wastewater to reach standard normal discharge.
Relevant parameter see the table below in five embodiments of the invention：
Claims (9)
1. a kind of effective method for reducing chemical nickle-plating wastewater pollutant, performs following steps：
Step 1,1# regulating reservoirs are pumped into by chemical nickle-plating wastewater, are adjusted its pH value to 4-6 and are pumped into added with granule electrode and being connected with
In the electrolysis installation of compressed air, the reactive hydroxyl radical (OH) of high content is generated using three-dimensional electrolysis method, to oxygen
Change nickeliferous, the phosphorus-containing matter existed with complex state in the waste water, so that nickel ion therein is released to free state nickel ion, makes
Hypophosphorous acid therein, phosphorous acid are oxidized to orthophosphoric acid；
Step 2, the waste water after three-dimensional electrolysis are processed is entered in 2# regulating tanks, using electro-flucculation process make substantial amounts of metal sun from
Son is dissolved in the waste water, various hydroxo complexes, multinuclear hydroxo complex is formed through series hydrolysis and polymerization, in making the waste water
Free state nickel ion and orthophosphoric acid form the precipitation matter based on colloidal state impurity and/or suspended particulate cohesion, the suspension of association
The scum layer swum on the water surface is formed under the air supporting effect of hydrogen and oxygen；
Step 3, the waste water after electro-flucculation process is processed enters mixed mud sedimentation basin, add with ferrous sulfate, aluminium polychloride and
One or more combination in coagulant based on ferric sulfate, constantly great achievement long is big to make the colloidal state impurity and/or suspended particulate
Colloidal solid；
Step 4, the waste water containing big colloidal solid is entered in flocculation basin, is added with polyacrylamide, aluminium polychloride and sulphur
One or more combination in flocculant based on sour iron, accelerates the colloidal state impurity and/or suspended particulate is formed and includes hydrogen-oxygen
Change the speed of iron, nickel hydroxide and/or phosphate in interior sediment；
Step 5, the waste water containing the sediment is entered into sedimentation basin carries out mud-water separation, reclaims sediment and up to standard is given up
Water normal discharge.
2. it is according to claim 1 it is effective reduce chemical nickle-plating wastewater pollutant method, it is characterised in that：For phosphorous
Nickel-plating waste water of the amount higher than 1000mg/L, increases following steps, to eliminate surplus hypophosphorous acid between the step 2 and step 3
With the phosphorus in phosphorous acid：
1) waste water after electro-flucculation process is processed enters deep reaction dephosphorization pond；
2) to addition dephosphorization agent and oxidant, reaction time 30-60min, the addition of the dephosphorization agent in the deep reaction dephosphorization pond
It is 10-15 times of remaining phosphorus concentration in the waste water to measure, and the oxidant is hydrogen peroxide, and its addition is remaining phosphorus concentration in the waste water
10 times；
3) waste water after deep phosphorous removal is entered the treatment for continuing the step 3 in described mixed mud sedimentation basin.
3. it is according to claim 1 it is effective reduce chemical nickle-plating wastewater pollutant method, it is characterised in that：The three-dimensional
Electrolytic method is：
1) granule electrode is iron carbon ball particle or activated carbon；
2) to being passed through compressed air in electrolysis installation；
3) it is 7-100mA/cm to use current density2, 60-120min of cell reaction time；
4) described reactive hydroxyl radical (OH) is produced, production is as follows：
O2+2H++2e→H2O2 (1)
H2O2+Fe2+→·OH+HO-+Fe3+ (2)
Fe3++e→Fe2+ (3)
5) described free state nickel ion and orthophosphoric acid is generated.
4. it is according to claim 3 it is effective reduce chemical nickle-plating wastewater pollutant method, it is characterised in that：The electricity wadding
Solidifying method is：
1) carried out in electric flocculation reactor, negative electrode therein and anode use metallic iron；
2) pulse power is used, current density is 1-5mA/cm2, 15-60min of cell reaction time；
3) generation includes various hydroxo complexes, the hydroxide of multinuclear hydroxo complex, and the hydroxide is Fe
(H2O)6 3+、Fe(H2O)5(OH)2+、Fe(H2O)4(OH)2+And Fe2(H2O)8(OH)2 2+, production is as follows：
Anode：Fe-2e-→Fe2+ (4)
Negative electrode：H2O+2e→H2↑+2OH- (5)
The Fe of generation3+PO in solution4 3-, reaction generation FePO4Precipitation,
Fe3++PO4 3-→FePO4↓ (6)
4) it is not less than under conditions of 4 in pH, Fe3+Fe (OH) can be precipitated as3Flco.
5. it is according to claim 3 it is effective reduce chemical nickle-plating wastewater pollutant method, it is characterised in that：Every liter of waste water
In, in 0.25-1.1g/L, pH value is not less than 11, reaction time 5-30min to described ferrous sulfate consumption.
6. it is according to claim 3 it is effective reduce chemical nickle-plating wastewater pollutant method, it is characterised in that：Every liter of waste water
In, in 0.1-0.4g/L, pH value is not less than 11, reaction time 10-30min to described polyacrylamide consumption.
7. it is according to claim 3 it is effective reduce chemical nickle-plating wastewater pollutant method, it is characterised in that：The chemistry
Nickel content is in 50-5000mg/L in nickel-plating waste water；Phosphorus content is in 200-30000mg/L；Total COD is in 400-50000mg/L.
8. it is a kind of it is effective reduce chemical nickle-plating wastewater pollutant processing system, it is characterised in that：Successively by wastewater collection pond, 1#
Regulating reservoir, three-dimensional electrolysis reactor, 2# regulating reservoirs, electric flocculation reactor, deep reaction dephosphorization pond, mixed mud sedimentation basin, flocculation basin,
Sedimentation basin and supernatant water removal pond composition, wherein,
Wastewater collection pond, is used to collect nickel content in 50-5000mg/L；Phosphorus content is in 200-30000mg/L；Total COD is in 400-
The chemical nickle-plating wastewater of 50000mg/L；
1# regulating reservoirs, the regulating reservoir is adjusted to 4-6 using the pH value that polypropylene (pp) will pump into the chemical nickle-plating wastewater in the pond；
Three-dimensional electrolysis reactor, including anode, negative electrode, the granule electrode that is filled between anode and negative electrode and compressed air conveying
Structure, its will pump into chemical nickle-plating wastewater therein using three-dimensional electrolysis method generation high content reactive hydroxyl radical (
OH), it is used to aoxidize nickeliferous, the phosphorus-containing matter existed with complex state in the waste water, so that nickel ion therein is released to freedom
State nickel ion, hypophosphorous acid therein, phosphorous acid is set to be oxidized to orthophosphoric acid；
2# regulating reservoirs, the regulating reservoir uses polypropylene, will pump into the pond by the chemical nickle-plating wastewater after three-dimensional electrolysis treatment
It is sufficiently mixed uniform；
Electric flocculation reactor, in making substantial amounts of metal cation dissolve in the waste water using electro-flucculation process, through series hydrolysis and poly-
Conjunction forms various hydroxo complexes, multinuclear hydroxo complex, free state nickel ion and orthophosphoric acid in the waste water is formed with glue
Precipitation matter based on state impurity and/or suspended particulate cohesion, the suspension of association is formed under the air supporting effect of hydrogen and oxygen
Swim in the scum layer on the water surface；
Deep reaction dephosphorization pond, by the waste water after three-dimensional electrolysis and electric flocculation treatment, using addition dephosphorization agent and hydrogen peroxide
Method, aoxidizes minimal amount of hypophosphorous acid, phosphorous acid, by after deep oxidation, remaining hypophosphorous acid, phosphorous acid are oxidized in waste water
It is orthophosphoric acid, is removed by the precipitation method；
Mixed mud sedimentation basin, the waste water after electro-flucculation process is processed enters mixed mud sedimentation basin, adds mixed based on ferrous sulfate
Solidifying agent, makes the colloidal state impurity and/or suspended particulate constantly grow up；
Flocculation basin, the waste water containing big colloidal solid is entered in flocculation basin, adds the flocculant based on polyacrylamide, plus
The fast colloidal state impurity and/or suspended particulate form the sediment comprising iron hydroxide, nickel hydroxide and/or phosphate
Speed；
Sedimentation basin, supernatant water removal pond, the waste water containing the sediment is entered into sedimentation basin carries out mud-water separation, reclaims precipitation
Thing and by waste water normal discharge up to standard.
9. it is according to claim 8 it is effective reduce chemical nickle-plating wastewater pollutant processing system, it is characterised in that：It is described
In three-dimensional electrolysis reactor, negative electrode is placed in electrolytic cell centre position, and two ends are set to plate, particle filled composite electricity between pole plate
Pole, water and compressed air are entered by the bottom of electrolytic cell respectively, the water outlet by the way of overflow.
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| CN113023954A (en) * | 2021-02-07 | 2021-06-25 | 深圳市蓝宝实业有限公司 | Low-emission treatment process for nickel-containing wastewater |
| CN114230053A (en) * | 2021-11-03 | 2022-03-25 | 深圳市世清环保科技有限公司 | Treatment method and treatment system for nickel-containing waste liquid |
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| CN115323363B (en) * | 2022-07-27 | 2023-11-28 | 惠州市安泰普表面处理科技有限公司 | Chemical nickel plating solution for aluminum alloy and preparation method thereof |
| CN115557647A (en) * | 2022-10-25 | 2023-01-03 | 广西华锡矿业有限公司再生资源分公司 | Method for reducing arsenic content in high-arsenic ion beneficiation wastewater |
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