CN113213591A - Anodic electrooxidation wastewater treatment process - Google Patents
Anodic electrooxidation wastewater treatment process Download PDFInfo
- Publication number
- CN113213591A CN113213591A CN202110587449.2A CN202110587449A CN113213591A CN 113213591 A CN113213591 A CN 113213591A CN 202110587449 A CN202110587449 A CN 202110587449A CN 113213591 A CN113213591 A CN 113213591A
- Authority
- CN
- China
- Prior art keywords
- sulfuric acid
- aluminum sulfate
- wastewater treatment
- pure water
- anodic
- 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.)
- Pending
Links
Images
Classifications
-
- 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
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/90—Separation; Purification
-
- 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
- C01F7/68—Aluminium compounds containing sulfur
- C01F7/74—Sulfates
-
- 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
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Electrochemistry (AREA)
- Geology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention provides an anodic electrooxidation wastewater treatment process, belongs to the technical field of anodic electrooxidation wastewater treatment, and particularly relates to an anodic electrooxidation wastewater treatment process. The process flow comprises the following steps: electrolytic ion membrane treatment, pure water recovery, pure water reuse, sulfuric acid purification, sulfuric acid reuse and aluminum sulfate residue liquid recovery treatment. Compared with the prior art, the invention has the following advantages and effects: firstly, the process has low treatment cost, high economic benefit and convenient popularization and use; secondly, the water produced by the separation of the electrolytic ion membrane has high purity, the conductivity is below 10us/cm, the reuse water quality is good, and the cyclic utilization of the waste water can be realized; thirdly, the sulfuric acid recovered by the method has high purity, can be used as a raw material for blending, and can realize the recycling of waste residues; finally, the aluminum sulfate recovered by the invention can be used as a coagulant aid and a phosphorus removing agent.
Description
Technical Field
The invention belongs to the technical field of anodic electrooxidation wastewater treatment, and particularly relates to an anodic electrooxidation wastewater treatment process.
Background
In the anodic oxidation process, sulfuric acid is used for carrying out electric oxidation on an aluminum workpiece, the workpiece is subjected to oxidation cleaning and then enters the next process, the process generates waste water containing aluminum sulfate, and a regular electric oxidation tank generates concentrated waste liquid for electric oxidation, the conventional treatment method adopts neutralization and precipitation, and an increased amount of alkali or alkaline compounds containing hydroxide radicals are required, such as: calcium hydroxide and physical and chemical precipitation generate a large amount of sludge, so that the treatment cost is high, and simultaneously, if the calcium hydroxide is used for neutralizing and precipitating, not only is the sludge abundant, but also if the calcium needs to be removed for recycling, the cost is high and great risk is brought to the subsequent membrane process.
The prior art discloses a comprehensive treatment process for electroplating wastewater with the patent number of CN201811441484.8, which comprises the following steps: (1) collecting electroplating wastewater containing phosphorus, aluminum, cobalt and manganese; (2) adding a sodium hydroxide solution into the wastewater, adjusting the pH value of the wastewater, and adding a compound oxidant to perform an oxidation reaction; (3) immersing the waste nickel-cobalt-manganese ternary lithium battery positive pole piece into acid liquor, adding a reducing agent into the acid liquor, heating, stirring and filtering to obtain filtrate; (4) mixing the wastewater in the step (2) and the filtrate in the step (3), adjusting the pH, and regulating the contents of nickel, cobalt and manganese in the mixed solution to obtain a regulated stock solution; (5) introducing CO gas into the regulating stock solution in the step (4) to obtain a solid material; (6) and (5) drying the solid material obtained in the step (5), adding lithium carbonate, uniformly mixing, performing high-temperature calcination, and obtaining the aluminum oxide coated nickel cobalt lithium manganate material after calcination. The invention combines the waste lithium battery and the electroplating wastewater, improves the electrochemical performance of the lithium battery, and finally discharges the electroplating wastewater up to the standard. Although the process reaches the discharge standard of electroplating wastewater, the reasonable recycling of the wastewater is not achieved.
Disclosure of Invention
In order to solve the problems, the invention aims to provide an anodic electrooxidation wastewater treatment process which is low in cost, high in economic benefit and convenient to popularize and use.
The invention also aims to provide an anodic electrooxidation wastewater treatment process which can realize the recycling of wastewater.
The invention also aims to provide an anodic electrooxidation wastewater treatment process which can realize the recycling of sulfuric acid waste liquid.
The last purpose of the invention is to provide an anodic electrooxidation wastewater treatment process, which can realize the recycling of aluminum sulfate waste residues.
In order to achieve the above object, the present invention has the following technical means.
The invention provides an anodic electrooxidation wastewater treatment process, which comprises the following steps:
the method comprises the following steps: electrolytic ion membrane treatment: leading the anodic electrooxidation wastewater containing aluminum sulfate and sulfuric acid into an electrolytic ion membrane device by a water pump for concentration and separation;
step two: and (3) pure water recovery: introducing water obtained by separation of electrolytic ion membrane equipment into a pure water recovery tank;
step three: and (3) recycling pure water: introducing the pure water in the pure water recovery tank into a workshop production line by using a water pump for reuse;
step four: sulfuric acid purification: introducing the concentrated sulfuric acid and the concentrated aluminum sulfate solution obtained by concentration and separation in the step one into sulfuric acid purification equipment to obtain a sulfuric acid solution with the purity of 70% and concentrated aluminum sulfate residue liquid;
step five: and (3) recycling sulfuric acid: diluting the sulfuric acid solution obtained in the fourth step to the purity of 30%, and then reusing the sulfuric acid solution in an anodic electrooxidation workshop;
step six: aluminum sulfate slag liquid recovery treatment: and 4, purifying the concentrated aluminum sulfate residue liquid obtained in the fourth step to obtain aluminum sulfate solid.
Further, the ionic membrane electrolysis device in the first step is provided with a direct current electric field.
Furthermore, the ionic membrane electrolysis equipment in the first step is provided with an ionic membrane, and ions in the wastewater can selectively pass through the ionic membrane under the action of a direct current electric field, so that the aim of purifying the sulfuric acid and aluminum sulfate solution is fulfilled.
Further, the conductivity of the pure water in the second step is lower than 10 us/cm.
Furthermore, the sulfuric acid purification equipment in the fourth step is provided with a sulfuric acid purification membrane, and the sulfuric acid purification membrane can separate sulfate ions and aluminum ions, so that the purpose of purifying sulfuric acid is achieved.
Further, the aluminum sulfate hexammoniate solid can be used as a coagulant aid after being treated.
Further, the aluminum hexasulfate solid in the step can be used as a phosphorus removing agent after being treated.
Compared with the prior art, the invention has the advantages and effects that: firstly, the process has low treatment cost, high economic benefit and convenient popularization and use; secondly, the water produced by the separation of the electrolytic ion membrane has high purity, the conductivity is below 10us/cm, the reuse water quality is good, and the cyclic utilization of the waste water can be realized; thirdly, the sulfuric acid recovered by the method has high purity, can be used as a raw material for blending, and can realize the recycling of waste residues; finally, the aluminum sulfate recovered by the invention can be used as a coagulant aid and a phosphorus removing agent.
Drawings
FIG. 1 is a schematic process flow diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to achieve the above object, the technical solution of the present invention is as follows.
Referring to fig. 1, the invention provides an anodic electrooxidation wastewater treatment process, which comprises the following steps:
the method comprises the following steps: electrolytic ion membrane treatment: leading the anodic electrooxidation wastewater containing aluminum sulfate and sulfuric acid into an electrolytic ion membrane device by a water pump for concentration and separation;
step two: and (3) pure water recovery: introducing water obtained by separation of electrolytic ion membrane equipment into a pure water recovery tank;
step three: and (3) recycling pure water: introducing the pure water in the pure water recovery tank into a workshop production line by using a water pump for reuse;
step four: sulfuric acid purification: introducing the concentrated sulfuric acid and the concentrated aluminum sulfate solution obtained by concentration and separation in the step one into sulfuric acid purification equipment to obtain a sulfuric acid solution with the purity of 70% and concentrated aluminum sulfate residue liquid;
step five: and (3) recycling sulfuric acid: diluting the sulfuric acid solution obtained in the fourth step to the purity of 30%, and then reusing the sulfuric acid solution in an anodic electrooxidation workshop;
step six: aluminum sulfate slag liquid recovery treatment: and 4, purifying the concentrated aluminum sulfate residue liquid obtained in the fourth step to obtain aluminum sulfate solid.
In this example, the electrolytic ion membrane device in the first step is provided with a direct current electric field.
In this embodiment, the ionic membrane electrolysis device in the first step is provided with an ionic membrane, and ions in the wastewater can selectively pass through the ionic membrane under the action of the direct current electric field, so as to achieve the purpose of purifying the sulfuric acid and aluminum sulfate solution.
In the present example, the conductivity of the pure water in the second step is less than 10 us/cm.
In this example, the sulfuric acid purification apparatus in the fourth step is provided with a sulfuric acid purification membrane, and the sulfuric acid purification membrane can separate sulfate ions and aluminum ions for the purpose of purifying sulfuric acid.
In this example, the step hexaaluminum sulfate solids are treated to act as a coagulant aid.
In this example, the step hexaaluminum sulfate solids are treated to be useful as a phosphorus removal agent.
The above embodiments are only for illustrating the present invention, and the scope of the present invention is not limited to the above embodiments. The objectives of the present invention can be achieved by the ordinary skilled person in the art according to the disclosure of the present invention and the ranges of the parameters.
Claims (7)
1. The anodic electrooxidation wastewater treatment process is characterized by comprising the following steps:
the method comprises the following steps: electrolytic ion membrane treatment: leading the anodic electrooxidation wastewater containing aluminum sulfate and sulfuric acid into an electrolytic ion membrane device by a water pump for concentration and separation;
step two: and (3) pure water recovery: introducing water obtained by separation of electrolytic ion membrane equipment into a pure water recovery tank;
step three: and (3) recycling pure water: introducing the pure water in the pure water recovery tank into a workshop production line by using a water pump for reuse;
step four: sulfuric acid purification: introducing the concentrated sulfuric acid and the concentrated aluminum sulfate solution obtained by concentration and separation in the step one into sulfuric acid purification equipment to obtain a sulfuric acid solution with the purity of 70% and concentrated aluminum sulfate residue liquid;
step five: and (3) recycling sulfuric acid: diluting the sulfuric acid solution obtained in the fourth step to the purity of 30%, and then reusing the sulfuric acid solution in an anodic electrooxidation workshop;
step six: aluminum sulfate slag liquid recovery treatment: and 4, purifying the concentrated aluminum sulfate residue liquid obtained in the fourth step to obtain aluminum sulfate solid.
2. The anodic electrooxidation wastewater treatment process of claim 1 wherein the electrolytic ion membrane device in step one is provided with a DC electric field.
3. The anodic electrooxidation wastewater treatment process of claim 1 wherein the ionic membrane electrolysis device in the first step is provided with an ionic membrane.
4. The process of claim 1, wherein the conductivity of the pure water in the second step is less than 10 us/cm.
5. The anodic electrooxidation wastewater treatment process of claim 1 wherein the sulfuric acid purification equipment in step four is provided with a sulfuric acid purification membrane.
6. The anodic electrooxidation wastewater treatment process of claim 1 wherein the step hexa aluminum sulfate solids are treated to act as a coagulant aid.
7. The process of claim 1, wherein the aluminum sulfate hexammoniate solids are treated to serve as a phosphorus removal agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110587449.2A CN113213591A (en) | 2021-05-27 | 2021-05-27 | Anodic electrooxidation wastewater treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110587449.2A CN113213591A (en) | 2021-05-27 | 2021-05-27 | Anodic electrooxidation wastewater treatment process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113213591A true CN113213591A (en) | 2021-08-06 |
Family
ID=77098887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110587449.2A Pending CN113213591A (en) | 2021-05-27 | 2021-05-27 | Anodic electrooxidation wastewater treatment process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113213591A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5399247A (en) * | 1993-12-22 | 1995-03-21 | Eastman Kodak Company | Method of electrolysis employing a doped diamond anode to oxidize solutes in wastewater |
| CN101808947A (en) * | 2007-07-18 | 2010-08-18 | 莫纳制药贸易有限公司 | Diaphragm analysis method and use of products obtained using the method |
| JP2013094740A (en) * | 2011-11-02 | 2013-05-20 | Omega:Kk | Wastewater treatment system |
| CN105540957A (en) * | 2016-01-26 | 2016-05-04 | 重庆巨科环保有限公司 | Electroplating wastewater treatment method |
| CN112047546A (en) * | 2020-08-10 | 2020-12-08 | 何学文 | Treatment process for wastewater containing nitrate nitrogen through anodic oxidation |
-
2021
- 2021-05-27 CN CN202110587449.2A patent/CN113213591A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5399247A (en) * | 1993-12-22 | 1995-03-21 | Eastman Kodak Company | Method of electrolysis employing a doped diamond anode to oxidize solutes in wastewater |
| CN101808947A (en) * | 2007-07-18 | 2010-08-18 | 莫纳制药贸易有限公司 | Diaphragm analysis method and use of products obtained using the method |
| JP2013094740A (en) * | 2011-11-02 | 2013-05-20 | Omega:Kk | Wastewater treatment system |
| CN105540957A (en) * | 2016-01-26 | 2016-05-04 | 重庆巨科环保有限公司 | Electroplating wastewater treatment method |
| CN112047546A (en) * | 2020-08-10 | 2020-12-08 | 何学文 | Treatment process for wastewater containing nitrate nitrogen through anodic oxidation |
Non-Patent Citations (2)
| Title |
|---|
| 国家环境保护局: "《工业污染治理技术丛书 废水卷 有色金属工业废水治理》", 30 November 1991, 北京：中国环境科学出版社 * |
| 王松等: "《国家职业资格培训教程 金属材涂层工》", 31 May 2011, 北京：中国建材工业出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105523668B (en) | A kind of PCB nitrogen-containing wastewaters Zero discharge treatment method and device | |
| WO2016206418A1 (en) | Recycling and reusing process for spent tin stripper solution | |
| CN111560615B (en) | Method for on-line recovery of copper and chlorine from acidic etching waste liquid and regeneration of etching liquid | |
| CN106966414B (en) | A kind of waste phosphoric acid processing method producing electrode foil | |
| CN111697282B (en) | Method for extracting lithium from dilute solution recovered from waste battery positive electrode material | |
| CN110217931A (en) | A kind of recycling treatment process of spent acid | |
| CN212247228U (en) | Contain salt waste water recycling apparatus based on electrolysis hydrogen manufacturing technique | |
| CN108134046B (en) | Clean production method of coprecipitation method anode material carbonate precursor | |
| CN205442898U (en) | A device for PCB contains ammonia nitrogen wastewater zero release to be handled | |
| CN106315930A (en) | Method for regenerating and recycling ethylene waste alkali liquor | |
| CN217264980U (en) | Deacidification device of pickling spent acid | |
| CN112047546A (en) | Treatment process for wastewater containing nitrate nitrogen through anodic oxidation | |
| CN221051702U (en) | Wastewater treatment device | |
| CN113636672A (en) | Method for recovering nickel-containing wastewater | |
| CN106315936B (en) | Method for treating bromamine acid wastewater | |
| CN111636073A (en) | Device and process for recycling salt-containing wastewater | |
| CN112624486A (en) | Oxidation treatment process for arsenic-containing waste acid wastewater | |
| CN112897771B (en) | Treatment device and treatment method for rare earth smelting wastewater | |
| CN113213591A (en) | Anodic electrooxidation wastewater treatment process | |
| CN113003658B (en) | Treatment process of nickel insoluble anode electrolyte | |
| CN108588723A (en) | A kind of regeneration cycle system and method for alkaline etching waste liquid for producing | |
| CN107253781B (en) | Method for recycling acidic copper-containing waste liquid | |
| CN114195233A (en) | Deacidification device of pickling spent acid | |
| CN111977752A (en) | Treatment process for copper-containing etching cleaning wastewater of printed circuit board | |
| CN113697905B (en) | Method for synchronously treating comprehensive wastewater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210806 |
|
| RJ01 | Rejection of invention patent application after publication |