CN114751551A - Treatment method of nickel-containing wastewater in aluminum alloy profile production - Google Patents
Treatment method of nickel-containing wastewater in aluminum alloy profile production Download PDFInfo
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- 239000002351 wastewater Substances 0.000 title claims abstract description 84
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 83
- 238000011282 treatment Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 46
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 39
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 33
- 239000002699 waste material Substances 0.000 claims abstract description 26
- 239000012528 membrane Substances 0.000 claims abstract description 21
- 238000003756 stirring Methods 0.000 claims abstract description 19
- VEQPNABPJHWNSG-UHFFFAOYSA-N Nickel(2+) Chemical compound [Ni+2] VEQPNABPJHWNSG-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910001453 nickel ion Inorganic materials 0.000 claims abstract description 18
- 239000002244 precipitate Substances 0.000 claims abstract description 18
- 238000001179 sorption measurement Methods 0.000 claims abstract description 16
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 9
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 9
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 9
- 239000008394 flocculating agent Substances 0.000 claims abstract description 9
- 239000006228 supernatant Substances 0.000 claims abstract description 9
- 239000000706 filtrate Substances 0.000 claims abstract description 7
- 238000011045 prefiltration Methods 0.000 claims abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 37
- 229910052799 carbon Inorganic materials 0.000 claims description 13
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 10
- 239000003054 catalyst Substances 0.000 claims description 10
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 9
- 238000001223 reverse osmosis Methods 0.000 claims description 8
- 239000013049 sediment Substances 0.000 claims description 8
- 238000004062 sedimentation Methods 0.000 claims description 8
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 8
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 8
- BFDHFSHZJLFAMC-UHFFFAOYSA-L nickel(ii) hydroxide Chemical compound [OH-].[OH-].[Ni+2] BFDHFSHZJLFAMC-UHFFFAOYSA-L 0.000 claims description 5
- 229920002401 polyacrylamide Polymers 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 210000003462 vein Anatomy 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 description 10
- 230000008569 process Effects 0.000 description 6
- 238000005868 electrolysis reaction Methods 0.000 description 5
- -1 nitrate radicals Chemical class 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 3
- 230000000536 complexating effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000006722 reduction reaction Methods 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000003463 adsorbent Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009388 chemical precipitation Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 2
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- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
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- 230000009467 reduction Effects 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 238000003321 atomic absorption spectrophotometry Methods 0.000 description 1
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- 230000000711 cancerogenic effect Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
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- 230000007613 environmental effect Effects 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
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- 238000005507 spraying Methods 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
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- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
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Abstract
The invention relates to the field of treatment methods of nickel-containing wastewater, provides a treatment method of nickel-containing wastewater in aluminum alloy section production, solves the defects of low efficiency and poor removal effect of complex nickel in the treatment method of the prior art, and comprises the following treatment steps: (1) the wastewater is enriched into a first wastewater collection tank, and the wastewater in the wastewater collection tank is introduced into a porous membrane treatment system for pre-filtration treatment; (2) primarily removing free nickel ions; (3) adding a flocculating agent into the second waste liquid collecting tank to further settle the precipitate; (4) introducing the supernatant obtained in the step (2) into a closed vein breaking adsorption device, and stirring for 40-60 min; (5) and (4) feeding the liquid obtained after the treatment in the step (4) into a third waste liquid collecting tank, adding calcium hydroxide into the third waste liquid collecting tank to adjust the pH value of the waste water to 10-11, continuously stirring for 60-90min to generate precipitate, and separating the precipitate to obtain filtrate meeting the discharge standard.
Description
Technical Field
The invention relates to the field of treatment methods of nickel-containing wastewater, in particular to a treatment method of nickel-containing wastewater in aluminum alloy section production.
Background
Nickel metal is an alloying element, has stable chemical properties and extremely strong plasticity, and is widely applied to the fields of metallurgy, electroplating, light industry and the like. Because the nickel element has the characteristics of easy accumulation, easy loss and the like, the discharged wastewater contains a large amount of nickel element in the process of producing nickel products in factories. The nickel ions have strong carcinogenic effect, and the discharged wastewater can permeate into soil, generate enrichment effect and enter crops, so that the life health of people can be finally endangered. In addition, the price of nickel is high, so that the method has important significance on the aspects of economy, environmental protection and the like for the recovery and regeneration of nickel elements.
The aluminum profile wastewater mainly comes from the working procedures of oxidation, spraying, membrane stewing and the like. The waste water contains a large amount of nickel ions, nitrate radicals, phosphate radicals, sulfate radicals and other substances, the acidic waste water and the alkaline waste water are usually subjected to mixed neutralization treatment, the waste water in the aluminum profile industry is still treated by adopting a neutralization regulation and coagulating sedimentation method, and the treatment process comprises the following steps: acid-base wastewater are mutually neutralized, the pH is adjusted to be neutral, and cation Al3+And (3) forming hydroxide precipitate, pumping the neutralized and precipitated wastewater into a coagulation tank, adding flocculating agents PAC and PAM, flocculating, and then entering the precipitation tank, wherein the solution is discharged or recycled after reaching the standard.
The common treatment mode of nickel-containing wastewater comprises a chemical precipitation method, adsorption, sublimation treatment, coagulation, electrolysis and the like, wherein the chemical precipitation method has the characteristics of simple process and easiness in operation, but the treatment efficiency is not high, the coagulation has higher requirements on equipment, the structure is complex, the operation cost is high, the electrolysis method is not easy to treat low-concentration nickel-containing wastewater, an adsorbent in the adsorption method is easy to adsorb to saturation, and the adsorbent replacement or regeneration cost is high.
The nickel in the complexing state is adsorbed in the complexing groups under the action of other organic and inorganic complexing agents, is not easy to react with other substances, is a stable existing form, and can only be removed in the traditional treatment method, but is difficult to remove. The prior treatment technology of complexing electroplating wastewater is to perform subsequent treatment after complex breaking. Common methods for breaking collaterals are: (1) the Fenton oxidation method breaks the network, and the method has the defects of large sludge amount and high operation cost under the acidic condition. (2) The NaClO oxidation method has the disadvantages of long reaction time, easy influence of air temperature, proportional complex breaking speed to the concentration of sodium hypochlorite and the reaction time, side reaction during cyanogen breaking and adverse influence on the complex breaking process. (3) The electro-Fenton method, the third kind of electro-Fenton method after improvement, still has the defects of difficult sludge separation, large acid consumption of electrolytic reduction, low current efficiency, complex operation process, uneconomic performance and the like. These breaking technologies all belong to advanced oxidation technology, mainly use hydroxyl radical to oxidize and break the collaterals.
Chinese patent application No. 201810899965.7 discloses a method for treating low-concentration wastewater containing strong complex nickel, which comprises the following steps: (1) adjusting the pH of the nickel-containing wastewater to be neutral, pretreating the nickel-containing wastewater by a multi-media filter and an activated carbon filter, then treating the nickel-containing wastewater by a reverse osmosis system, and recycling the produced water treated by the reverse osmosis system; (2) adjusting the pH of the concentrated water treated by the reverse osmosis system to 2-5, and then sequentially carrying out iron-carbon micro-electrolysis and Fenton reaction; (3) adding an oxidant into effluent after the Fenton reaction, and further oxidizing and removing ammonia nitrogen; (4) adding a reducing agent into the oxidized effluent for reduction; (5) adding alkali into effluent after the reduction reaction to make nickel-containing wastewater alkaline, and then precipitating; (6) after the pH value of the supernatant obtained after precipitation is adjusted, selective chelating ion exchange resin is used for adsorption and then is discharged, and the Fenton method is adopted for breaking the complex, so that the problems of difficult sludge separation, low electrolysis efficiency and the like still exist.
Disclosure of Invention
Therefore, aiming at the problems, the invention provides a treatment method of nickel-containing wastewater in the production of aluminum alloy sections, which solves the defects of low efficiency and poor removal effect on nickel in a complex state of the treatment method in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: a treatment method of nickel-containing wastewater in aluminum alloy section production comprises the following treatment steps:
(1) the method comprises the steps that waste water is enriched into a first waste liquid collecting tank, the waste water in the waste liquid collecting tank is introduced into a porous membrane treatment system for pre-filtration treatment, the porous membrane treatment system comprises a stainless steel frame body, more than 10 silicon carbide membranes are arranged in the frame body at intervals, a waste water inlet is formed in the bottom of the frame body, a waste liquid outlet is formed in the top of the frame body, the waste water enters from the waste water inlet, and is discharged from the waste liquid outlet after being filtered by the silicon carbide membranes;
(2) preliminary removal of free nickel ions: feeding the wastewater discharged after the treatment in the step (1) into a second wastewater collection tank, adding a pH regulator into the second wastewater collection tank to make the pH of the wastewater equal to 8-10, and stirring for 30-60min to generate nickel hydroxide-containing precipitate and supernatant;
(3) adding a flocculating agent into the second waste liquid collecting tank to further settle the precipitate;
(4) introducing the supernatant obtained in the step (2) into a closed de-complexing adsorption device, stirring for 40-60min, wherein the de-complexing adsorption device comprises a tower body, an ultraviolet light source is arranged at the top end of the tower body, hydrogen peroxide and a modified activated carbon catalyst are injected into the tower body in advance, the ultraviolet light source is enabled to work for 1-2h by starting an external power supply, and nickel ions in a complex state in the de-complexing adsorption device are changed into nickel ions in a free state after being subjected to de-complexing treatment;
(5) and (4) feeding the liquid obtained after the treatment in the step (4) into a third waste liquid collecting tank, adding calcium hydroxide into the third waste liquid collecting tank to adjust the pH value of the waste water to 10-11, continuously stirring for 60-90min to generate precipitate, and separating the precipitate to obtain filtrate meeting the discharge standard.
The further improvement is that: the stirring speed in the step (4) is controlled at 600-.
The further improvement is that: the modified active carbon catalyst in the step (4) is formed by mixing potassium persulfate and active carbon.
The further improvement is that: the dosage of the potassium persulfate and the active carbon is as follows: 0.4-0.5g/L and 0.38-0.45g/L, which are calculated by the total amount of the supernatant.
The further improvement is that: and (5) adding a flocculating agent for further sedimentation after the sedimentation occurs, and separating the sediment.
The further improvement is that: the flocculant is polyacrylamide.
The further improvement is that: and (4) collecting the sediment obtained after the sedimentation in the steps (3) and (5), and sending the sediment into an electrolytic cell for electrolyzing and recovering the metallic nickel.
The further improvement is that: and (5) carrying out reverse osmosis treatment on the filtrate.
The further improvement is that: the pH regulator in the step (2) is calcium hydroxide.
The further improvement is that: the modified activated carbon catalyst is renewable activated carbon.
By adopting the technical scheme, the invention has the beneficial effects that:
1. according to the invention, nickel-containing wastewater in the production process of the aluminum profile is firstly enriched into the waste liquid collecting tank, and is subjected to pre-filtration treatment through the silicon carbide membrane, so that suspended matters in the waste liquid can be effectively removed; by adopting the porous membrane treatment system, impurities with larger particle sizes such as suspended matters and the like can be intercepted in the membrane, and the impurities in the membrane can be cleaned through backwashing, so that the membrane can be recycled. Because nickel-containing waste water is acidic, the selected silicon carbide membrane has acid resistance and can stably run in a strong acid environment.
2. The suspended solid is filtered in advance and then the pH of the wastewater is adjusted by adopting a pH regulator, free nickel ions are precipitated through continuous stirring, the free nickel ions are further precipitated and removed through a flocculating agent, and the removed nickel hydroxide precipitate is recycled through electrolysis, so that the wastewater is environment-friendly and the resource is recycled.
3. The pH regulator in the step (2) is preferably calcium hydroxide, can be used for producing nickel hydroxide precipitates and removing phosphate ions in wastewater, is beneficial to subsequent complex breaking, and reduces the removing effect of the phosphate ions on hydroxyl radicals during complex breaking treatment.
4. The complex nickel in the wastewater is subjected to complex breaking treatment, the wastewater is sent into a closed complex breaking adsorption device, hydrogen peroxide and a modified activated carbon catalyst consisting of activated carbon and potassium persulfate are injected into a tower body of the device in advance, an external ultraviolet light source is started, the hydrogen peroxide generates oxygen and water under the irradiation of ultraviolet light, the activated carbon activates the oxygen to generate strong hydroxyl radicals, and the persulfate decomposes into SO on the surface of the activated carbon4 ·-Free radical, SO4 ·-The free radicals can degrade various organic pollutants in the wastewater, namely hydroxylThe free radicals can convert the nickel in a complex state into free nickel ions, the free nickel ions are partially adsorbed by the activated carbon, and the free nickel ions are partially removed by subsequent calcium hydroxide precipitation, so that the content of the nickel ions in the final wastewater is reduced to be lower than 0.1 mg/L.
Drawings
FIG. 1 is a process flow diagram of a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a porous membrane processing system according to one embodiment of the present invention;
fig. 3 is a schematic structural diagram of a first embodiment of a vein breaking adsorption apparatus according to the present invention.
Detailed Description
The invention will now be further described with reference to the accompanying drawings and detailed description.
Example one
Referring to fig. 1 to 3, a method for treating nickel-containing wastewater in the production of aluminum alloy profiles comprises the following treatment steps:
(1) the method comprises the steps that waste water is enriched into a first waste liquid collecting tank 1, the waste water in the waste liquid collecting tank is introduced into a porous membrane treatment system 2 for pre-filtration treatment, the porous membrane treatment system 2 comprises a stainless steel frame body 21, 25 silicon carbide membranes 22 are arranged in the frame body 21 at intervals, a waste water inlet 23 is arranged at the bottom of the frame body, a waste liquid outlet 24 is arranged at the top of the frame body, and the waste water enters from the waste water inlet 23 and is discharged from the waste liquid outlet 24 after being filtered by the silicon carbide membranes 22;
(2) preliminary removal of free nickel ions: feeding the wastewater discharged after the treatment in the step (1) into a second wastewater collection tank 3, adding a pH regulator calcium hydroxide into the second wastewater collection tank 3 to make the pH of the wastewater equal to 9, and stirring for 30min to generate nickel hydroxide-containing precipitate and supernatant;
(3) adding a flocculating agent polyacrylamide into the second waste liquid collecting tank 3 to further settle the precipitate;
(4) introducing the supernatant obtained in the step (2) into a closed vein breaking adsorption device 4, stirring for 40min, wherein the vein breaking adsorption device 4 comprises a tower body 41, an ultraviolet light source 42 is arranged at the top end of the tower body 41, hydrogen peroxide and a modified activated carbon catalyst are injected into the tower body 41 in advance, the ultraviolet light source is enabled to work for 1h by starting an external power supply, and nickel ions in a complex state in the vein breaking adsorption device are changed into nickel ions in a free state after vein breaking treatment; the stirring speed is controlled at 600 r/min; the modified active carbon catalyst is formed by mixing potassium persulfate and active carbon; the dosage of the potassium persulfate and the active carbon is as follows: 0.4g/L and 0.38g/L, which are calculated by the total amount of the above clear liquid;
(5) and (3) feeding the liquid obtained after the treatment in the step (4) into a third waste liquid collecting tank 5, adding calcium hydroxide into the third waste liquid collecting tank 5 to adjust the pH value of the waste water to 10, continuously stirring for 60min to generate precipitation, adding a flocculating agent polyacrylamide to further precipitate, and separating the precipitate to obtain a filtrate meeting the discharge standard.
(6) And (4) collecting the sediment after the sedimentation in the steps (3) and (5), and sending the sediment into an electrolytic cell for electrolyzing and recovering metallic nickel.
(7) And (3) performing reverse osmosis treatment on the filtrate treated in the step (5), wherein the reverse osmosis treatment adopts a reverse osmosis system known in the prior art and is not described herein.
Example two
Referring to the first embodiment, the difference between the present embodiment and the first embodiment is: adjusting the pH value of the wastewater in the step (2) to 8, stirring for 45min, wherein the using amounts of the potassium persulfate and the active carbon in the step (4) are as follows: 0.45g/L and 0.4g/L, adjusting the pH value of the wastewater in the step (5) to 10.5, and continuously stirring for 75 min.
The modified active carbon catalyst is renewable active carbon, and the specific regeneration method comprises the following steps: and (3) feeding the modified activated carbon into an elution tank, electrifying for electrolytic treatment, so that substances such as Ni ions and the like adsorbed on the surface of the activated carbon are eluted into the elution tank, and the activated carbon recovers the adsorption capacity and can be used again.
EXAMPLE III
Referring to the first embodiment, the difference between the present embodiment and the first embodiment is: adjusting the pH value of the wastewater in the step (2) to 10, stirring for 60min, wherein the using amounts of the potassium persulfate and the active carbon in the step (4) are as follows: 0.5g/L and 0.45g/L, adjusting the pH value of the wastewater in the step (5) to 11, and continuously stirring for 90 min.
The liquids treated in the examples were used to determine the Ni removal rate, and the results were measured by atomic absorption spectrophotometry and potassium dichromate method (GB/71191421989), and are shown in the following table:
| example one | Example two | EXAMPLE III | |
| Ni removal rate (%) | 95.8 | 96.8 | 97.3 |
| COD removal Rate (%) | 75.2％ | 73.4 | 73.9 |
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A treatment method of nickel-containing wastewater in aluminum alloy profile production is characterized by comprising the following treatment steps:
(1) the method comprises the steps that waste water is enriched into a first waste liquid collecting tank, the waste water in the waste liquid collecting tank is introduced into a porous membrane treatment system for pre-filtration treatment, the porous membrane treatment system comprises a stainless steel frame body, more than 10 silicon carbide membranes are arranged in the frame body at intervals, a waste water inlet is formed in the bottom of the frame body, a waste liquid outlet is formed in the top of the frame body, the waste water enters from the waste water inlet, and is discharged from the waste liquid outlet after being filtered by the silicon carbide membranes;
(2) preliminary removal of free nickel ions: feeding the wastewater discharged after the treatment in the step (1) into a second wastewater collection tank, adding a pH regulator into the second wastewater collection tank to make the pH of the wastewater equal to 8-10, and stirring for 30-60min to generate nickel hydroxide-containing precipitate and supernatant;
(3) adding a flocculating agent into the second waste liquid collecting tank to further settle the precipitate;
(4) introducing the supernatant obtained in the step (2) into a closed de-complexing adsorption device, stirring for 40-60min, wherein the de-complexing adsorption device comprises a tower body, an ultraviolet light source is arranged at the top end of the tower body, hydrogen peroxide and a modified activated carbon catalyst are injected into the tower body in advance, the ultraviolet light source is enabled to work for 1-2h by starting an external power supply, and nickel ions in a complex state in the de-complexing adsorption device are changed into nickel ions in a free state after being subjected to de-complexing treatment;
(5) and (4) feeding the liquid obtained after the treatment in the step (4) into a third waste liquid collecting tank, adding calcium hydroxide into the third waste liquid collecting tank to adjust the pH value of the waste water to 10-11, continuously stirring for 60-90min to generate precipitate, and separating the precipitate to obtain filtrate meeting the discharge standard.
2. The method for treating nickel-containing wastewater in the production of aluminum alloy sections according to claim 1, characterized in that: the stirring speed in the step (4) is controlled at 600-.
3. The method for treating nickel-containing wastewater in the production of aluminum alloy sections according to claim 1, characterized in that: the modified active carbon catalyst in the step (4) is formed by mixing potassium persulfate and active carbon.
4. The method for treating nickel-containing wastewater in the production of aluminum alloy sections according to claim 3, characterized by comprising the following steps: the dosage of the potassium persulfate and the active carbon is as follows: 0.4-0.5g/L and 0.38-0.45g/L, based on the total amount of the above clear liquid.
5. The method for treating nickel-containing wastewater in the production of aluminum alloy sections according to claim 1, characterized in that: and (5) adding a flocculating agent for further sedimentation after the sedimentation occurs, and separating the sediment.
6. The method for treating nickel-containing wastewater in the production of aluminum alloy sections according to claim 1, characterized in that: the flocculant is polyacrylamide.
7. The method for treating nickel-containing wastewater in the production of aluminum alloy sections according to claim 1, characterized in that: and (4) collecting the sediment obtained after the sedimentation in the steps (3) and (5), and sending the sediment into an electrolytic cell for electrolyzing and recovering the metallic nickel.
8. The method for treating nickel-containing wastewater in the production of aluminum alloy sections according to claim 1, characterized in that: and (5) carrying out reverse osmosis treatment on the filtrate.
9. The method for treating nickel-containing wastewater in the production of aluminum alloy sections according to claim 1, characterized in that: the pH regulator in the step (2) is calcium hydroxide.
10. The method for treating nickel-containing wastewater in the production of aluminum alloy sections according to claim 6, characterized by comprising the following steps: the modified activated carbon catalyst is renewable activated carbon.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2104692A1 (en) * | 1991-03-08 | 1992-09-09 | Richard Kent Saugier | Purification of waste streams |
| JP2005279409A (en) * | 2004-03-29 | 2005-10-13 | Kubota Corp | Treatment method of organometallic compound-containing waste water |
| CN102642959A (en) * | 2012-05-07 | 2012-08-22 | 哈尔滨工程大学 | Method for removing arsenic in water through combination of oxidization composite chemical and light |
| CN103833123A (en) * | 2014-02-21 | 2014-06-04 | 陈瀚翔 | Method for treating complexed chemical nickel electroplating wastewater |
| ES2673673A1 (en) * | 2016-12-23 | 2018-06-25 | Universidad Pablo De Olavide | METHOD FOR THE TREATMENT OF WASTEWATER BASED ON PHOTOXIDATION BY ULTRAVIOLET LIGHT (Machine-translation by Google Translate, not legally binding) |
| CN110980919A (en) * | 2019-12-16 | 2020-04-10 | 浙江大学 | Method for degrading printing and dyeing wastewater by catalytic oxidation system based on persistent free radicals |
| CN113666534A (en) * | 2021-08-23 | 2021-11-19 | 湖南艾森尼克环保科技有限公司 | photocatalysis-Fenton-ozone-electrolysis synergetic oxidation treatment method for nickel-cobalt extraction waste water |
-
2022
- 2022-04-18 CN CN202210403363.4A patent/CN114751551A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2104692A1 (en) * | 1991-03-08 | 1992-09-09 | Richard Kent Saugier | Purification of waste streams |
| JP2005279409A (en) * | 2004-03-29 | 2005-10-13 | Kubota Corp | Treatment method of organometallic compound-containing waste water |
| CN102642959A (en) * | 2012-05-07 | 2012-08-22 | 哈尔滨工程大学 | Method for removing arsenic in water through combination of oxidization composite chemical and light |
| CN103833123A (en) * | 2014-02-21 | 2014-06-04 | 陈瀚翔 | Method for treating complexed chemical nickel electroplating wastewater |
| ES2673673A1 (en) * | 2016-12-23 | 2018-06-25 | Universidad Pablo De Olavide | METHOD FOR THE TREATMENT OF WASTEWATER BASED ON PHOTOXIDATION BY ULTRAVIOLET LIGHT (Machine-translation by Google Translate, not legally binding) |
| CN110980919A (en) * | 2019-12-16 | 2020-04-10 | 浙江大学 | Method for degrading printing and dyeing wastewater by catalytic oxidation system based on persistent free radicals |
| CN113666534A (en) * | 2021-08-23 | 2021-11-19 | 湖南艾森尼克环保科技有限公司 | photocatalysis-Fenton-ozone-electrolysis synergetic oxidation treatment method for nickel-cobalt extraction waste water |
Non-Patent Citations (1)
| Title |
|---|
| 杨鑫等: ""活性炭催化过氧化物高级氧化技术降解水中有机污染物"", 《化学进展》, vol. 22, no. 10, 31 October 2020 (2020-10-31), pages 2071 - 2078 * |
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