CN116693108A - Aluminum anodic oxidation wastewater treatment method - Google Patents
Aluminum anodic oxidation wastewater treatment method Download PDFInfo
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- CN116693108A CN116693108A CN202310748545.XA CN202310748545A CN116693108A CN 116693108 A CN116693108 A CN 116693108A CN 202310748545 A CN202310748545 A CN 202310748545A CN 116693108 A CN116693108 A CN 116693108A
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- Prior art keywords
- aluminum
- mixed solution
- waste liquid
- tank
- residual
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 22
- 230000003647 oxidation Effects 0.000 title claims abstract description 20
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 238000004065 wastewater treatment Methods 0.000 title claims description 8
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 239000002699 waste material Substances 0.000 claims abstract description 24
- 239000002351 wastewater Substances 0.000 claims abstract description 22
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 14
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 claims abstract description 10
- 238000005554 pickling Methods 0.000 claims abstract description 10
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims abstract description 8
- BFDHFSHZJLFAMC-UHFFFAOYSA-L nickel(ii) hydroxide Chemical compound [OH-].[OH-].[Ni+2] BFDHFSHZJLFAMC-UHFFFAOYSA-L 0.000 claims abstract description 8
- 239000011259 mixed solution Substances 0.000 claims description 37
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 26
- 238000005406 washing Methods 0.000 claims description 22
- 235000010344 sodium nitrate Nutrition 0.000 claims description 13
- 239000004317 sodium nitrate Substances 0.000 claims description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 11
- 239000002244 precipitate Substances 0.000 claims description 11
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 9
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 9
- 235000011152 sodium sulphate Nutrition 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 8
- 239000012286 potassium permanganate Substances 0.000 claims description 8
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 239000000047 product Substances 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 4
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 238000004043 dyeing Methods 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000001488 sodium phosphate Substances 0.000 claims description 3
- 229910000162 sodium phosphate Inorganic materials 0.000 claims description 3
- 235000011008 sodium phosphates Nutrition 0.000 claims description 3
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000007743 anodising Methods 0.000 claims 3
- -1 aluminum ions Chemical class 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 2
- 230000001502 supplementing effect Effects 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 description 4
- 229920002401 polyacrylamide Polymers 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 238000005374 membrane filtration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000011085 pressure filtration Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/36—Aluminium phosphates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/34—Preparation of aluminium hydroxide by precipitation from solutions containing aluminium salts
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G53/00—Compounds of nickel
- C01G53/04—Oxides; Hydroxides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- 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
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The method for treating the aluminum anodic oxidation wastewater can recover aluminum ions in the aluminum anodic oxidation wastewater by mixing the waste liquid of the pickling tank with the waste liquid of the alkaline tank and adjusting the pH value and supplementing aluminum sulfate, so that aluminum hydroxide and aluminum phosphate are obtained and refined for recovery, the treatment cost is reduced, the treatment means is simplified, the recovered aluminum hydroxide, nickel hydroxide and aluminum phosphate can provide economic values, and the treated wastewater meets the safety discharge standard.
Description
Technical Field
The invention relates to the technical field of anodic oxidation wastewater treatment, in particular to an aluminum anodic oxidation wastewater treatment method.
Background
The existing aluminum profile anodic oxidation process mostly contains substances such as aluminum ions, nitrogen elements and phosphorus elements, the existing wastewater treatment process mostly adopts the membrane system operation such as membrane filtration or reverse osmosis after lime and polyacrylamide are added for treatment, but the addition of polyaluminium PAC and polyacrylamide PAM can easily cause the fouling of the membrane system, the treatment load of the membrane system is increased, the impact load resistance is insufficient, the reuse effect of effluent is easily influenced, and the treatment cost is greatly increased by the membrane system operation such as membrane filtration or reverse osmosis.
Disclosure of Invention
In order to solve the technical defects in the prior art, the invention provides a method for treating aluminum anodic oxidation wastewater.
The technical scheme adopted by the invention is as follows: the aluminum anodic oxidation wastewater treatment method comprises the following steps:
(1) Mixing the waste liquid of the pickling tank with the waste liquid of the alkaline washing tank, and regulating the pH value of the mixed solution to 8-9 to obtain a mixed solution containing aluminum hydroxide precipitate;
(2) Filtering the mixed solution through plate pressure to obtain aluminum hydroxide and a residual mixed solution A;
(3) Adding aluminum sulfate into the residual mixed solution A, and adjusting the pH value of the bar to 7-7.5 to obtain a mixed solution containing aluminum phosphate precipitate;
(4) Filtering the mixed solution through plate pressure to obtain aluminum phosphate and a residual mixed solution B;
(5) The rest mixed solution B is discharged after denitrification and nitrogen removal are carried out;
(6) Filtering oxidation dyeing wastewater in a color tank through active carbon, adding sodium hydroxide to adjust the pH value to 7.5-8, then performing filter pressing to obtain nickel hydroxide, discharging the solution into a denitrification tank, and recovering the nickel hydroxide.
The specific steps of the step (1) are as follows: discharging the waste liquid in the pickling tank into a mixing tank, then discharging the waste liquid in the alkaline washing tank into the mixing tank, and closing the discharge of the waste liquid in the alkaline washing tank after the pH value of the mixed solution in the mixing tank reaches 8-9 to obtain a mixed solution containing aluminum hydroxide precipitate; adding sulfuric acid into the residual alkaline washing tank waste liquid in the alkaline washing tank to adjust the pH value to 7, and filtering by plate pressure to obtain aluminum hydroxide precipitate and residual waste water.
The waste liquid of the pickling tank contains aluminum sulfate, aluminum nitrate, phosphoric acid and potassium permanganate products.
The waste liquid of the alkaline washing pool contains sodium metaaluminate, sodium nitrate and potassium permanganate products.
The residual mixed solution A obtained in the step (2) contains sodium nitrate, sodium sulfate and sodium phosphate.
The residual mixed solution B obtained in the step (2) contains sodium nitrate and sodium sulfate.
The residual wastewater in the alkaline washing pool contains sodium nitrate and sodium sulfate.
The beneficial effects of the invention are as follows: the invention provides a method for treating aluminum anodic oxidation wastewater, which can recover aluminum ions in the aluminum anodic oxidation wastewater by mixing waste liquid of a pickling tank with waste liquid of an alkaline washing tank and adjusting pH and supplementing aluminum sulfate, so as to obtain and refine aluminum hydroxide and aluminum phosphate for recovery, thereby not only reducing treatment cost and simplifying treatment means, but also providing economic value for the recovered aluminum hydroxide, nickel hydroxide and aluminum phosphate, and ensuring that the treated wastewater meets the safety discharge standard.
Drawings
FIG. 1 is a process flow diagram of the treatment method of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the invention, are within the scope of the invention based on the embodiments of the invention.
The raw materials required during the anodic oxidation and acid washing of aluminum are as follows: sulfuric acid, nitric acid, phosphoric acid, potassium permanganate (trace);
the raw materials required during alkaline washing are as follows: sodium hydroxide, sodium nitrate, potassium permanganate (trace).
Aluminum sulfate, aluminum nitrate, phosphoric acid (weak acid is unreacted) and potassium permanganate and trace impurities can be generated in the pickling process;
sodium metaaluminate, sodium nitrate and potassium permanganate are produced during the alkaline washing process.
The aluminum anodic oxidation wastewater treatment method adopted by the invention comprises the following steps:
(1) Discharging the waste liquid in the pickling tank into a mixing tank, then discharging the waste liquid in the alkaline washing tank into the mixing tank, and closing the discharge of the waste liquid in the alkaline washing tank after the pH value of the mixed solution in the mixing tank reaches 8-9 to obtain a mixed solution containing aluminum hydroxide precipitate; adding sulfuric acid into the residual alkaline washing tank waste liquid in the alkaline washing tank to adjust the pH value to 7, and performing plate pressure filtration to obtain aluminum hydroxide precipitate and residual waste water, wherein the residual waste water contains sodium nitrate and sodium sulfate;
(2) Filtering the mixed solution through plate pressure to obtain aluminum hydroxide and a residual mixed solution A, wherein the residual mixed solution A contains sodium nitrate, sodium sulfate and sodium phosphate;
(3) Adding aluminum sulfate into the residual mixed solution A, and adjusting the pH value of the bar to 7-7.5 to obtain a mixed solution containing aluminum phosphate precipitate;
(4) Filtering the mixed solution through plate pressure to obtain aluminum phosphate and a residual mixed solution B, wherein the residual mixed solution B contains sodium nitrate and sodium sulfate;
(5) The rest mixed solution B is discharged after denitrification and nitrogen removal are carried out;
(6) Filtering oxidation dyeing wastewater in a color tank through active carbon, adding sodium hydroxide to adjust the pH value to 7.5-8, then performing filter pressing to obtain nickel hydroxide, discharging the solution into a denitrification tank, and recovering the nickel hydroxide.
The skilled person will know: while the invention has been described in terms of the foregoing embodiments, the inventive concepts are not limited to the invention, and any modifications that use the inventive concepts are intended to be within the scope of the appended claims.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (7)
1. The aluminum anodic oxidation wastewater treatment method is characterized by comprising the following steps of:
(1) Mixing the waste liquid of the pickling tank with the waste liquid of the alkaline washing tank, and regulating the pH value of the mixed solution to 8-9 to obtain a mixed solution containing aluminum hydroxide precipitate;
(2) Filtering the mixed solution through plate pressure to obtain aluminum hydroxide and a residual mixed solution A;
(3) Adding aluminum sulfate into the residual mixed solution A, and adjusting the pH value of the bar to 7-7.5 to obtain a mixed solution containing aluminum phosphate precipitate;
(4) Filtering the mixed solution through plate pressure to obtain aluminum phosphate and a residual mixed solution B;
(5) The rest mixed solution B is discharged after denitrification and nitrogen removal are carried out;
(6) Filtering oxidation dyeing wastewater in a color tank through active carbon, adding sodium hydroxide to adjust the pH value to 7.5-8, then performing filter pressing to obtain nickel hydroxide, discharging the solution into a denitrification tank, and recovering the nickel hydroxide.
2. The method for treating aluminum anodic oxidation wastewater according to claim 1, wherein the specific steps of the step (1) are as follows: discharging the waste liquid in the pickling tank into a mixing tank, then discharging the waste liquid in the alkaline washing tank into the mixing tank, and closing the discharge of the waste liquid in the alkaline washing tank after the pH value of the mixed solution in the mixing tank reaches 8-9 to obtain a mixed solution containing aluminum hydroxide precipitate; adding sulfuric acid into the residual alkaline washing tank waste liquid in the alkaline washing tank to adjust the pH value to 7, and filtering by plate pressure to obtain aluminum hydroxide precipitate and residual waste water.
3. The method for treating aluminum anodizing wastewater according to claim 1, wherein the waste liquid of the pickling tank contains aluminum sulfate, aluminum nitrate, phosphoric acid and potassium permanganate products.
4. The method for treating aluminum anodic oxidation wastewater according to claim 1, wherein the alkaline washing tank waste liquid contains sodium metaaluminate, sodium nitrate and potassium permanganate products.
5. The method for treating aluminum anodizing wastewater according to claim 1, wherein the residual mixed solution A obtained in the step (2) contains sodium nitrate, sodium sulfate and sodium phosphate.
6. The method for treating aluminum anodizing wastewater according to claim 1, wherein the residual mixed solution B obtained in the step (2) contains sodium nitrate and sodium sulfate.
7. The method for treating aluminum anodic oxidation wastewater according to claim 2, wherein the residual wastewater in the alkaline washing tank contains sodium nitrate and sodium sulfate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310748545.XA CN116693108A (en) | 2023-06-25 | 2023-06-25 | Aluminum anodic oxidation wastewater treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310748545.XA CN116693108A (en) | 2023-06-25 | 2023-06-25 | Aluminum anodic oxidation wastewater treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116693108A true CN116693108A (en) | 2023-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310748545.XA Pending CN116693108A (en) | 2023-06-25 | 2023-06-25 | Aluminum anodic oxidation wastewater treatment method |
Country Status (1)
| Country | Link |
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| CN (1) | CN116693108A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117466502A (en) * | 2023-12-28 | 2024-01-30 | 深圳星河环境股份有限公司 | Recovery method of phosphorus-containing waste liquid |
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2023
- 2023-06-25 CN CN202310748545.XA patent/CN116693108A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117466502A (en) * | 2023-12-28 | 2024-01-30 | 深圳星河环境股份有限公司 | Recovery method of phosphorus-containing waste liquid |
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