CN114835097A - Method for treating pentavalent vanadium in wastewater by using ferrophosphorus slag - Google Patents
Method for treating pentavalent vanadium in wastewater by using ferrophosphorus slag Download PDFInfo
- Publication number
- CN114835097A CN114835097A CN202210497651.0A CN202210497651A CN114835097A CN 114835097 A CN114835097 A CN 114835097A CN 202210497651 A CN202210497651 A CN 202210497651A CN 114835097 A CN114835097 A CN 114835097A
- Authority
- CN
- China
- Prior art keywords
- vanadium
- pentavalent vanadium
- feed liquid
- ferrophosphorus
- slag
- 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
- 229910052720 vanadium Inorganic materials 0.000 title claims abstract description 67
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000002893 slag Substances 0.000 title claims abstract description 33
- 239000002351 wastewater Substances 0.000 title claims abstract description 17
- 239000011574 phosphorus Substances 0.000 claims abstract description 10
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 10
- 239000006227 byproduct Substances 0.000 claims abstract description 6
- 239000003513 alkali Substances 0.000 claims abstract description 5
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 32
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 15
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 11
- 239000002699 waste material Substances 0.000 claims description 11
- DPTATFGPDCLUTF-UHFFFAOYSA-N phosphanylidyneiron Chemical compound [Fe]#P DPTATFGPDCLUTF-UHFFFAOYSA-N 0.000 claims description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 6
- 230000032683 aging Effects 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- 239000000047 product Substances 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims 2
- 238000003723 Smelting Methods 0.000 claims 1
- 150000007513 acids Chemical class 0.000 claims 1
- 230000020477 pH reduction Effects 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 10
- 238000004065 wastewater treatment Methods 0.000 abstract description 4
- 239000010842 industrial wastewater Substances 0.000 abstract description 2
- OBSZRRSYVTXPNB-UHFFFAOYSA-N tetraphosphorus Chemical compound P12P3P1P32 OBSZRRSYVTXPNB-UHFFFAOYSA-N 0.000 abstract description 2
- 238000005485 electric heating Methods 0.000 abstract 1
- 230000001376 precipitating effect Effects 0.000 abstract 1
- 238000006722 reduction reaction Methods 0.000 description 6
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- -1 vanadic magnetite Chemical compound 0.000 description 4
- 238000003756 stirring Methods 0.000 description 3
- 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 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000003456 ion exchange resin Substances 0.000 description 2
- 229920003303 ion-exchange polymer Polymers 0.000 description 2
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 235000010269 sulphur dioxide Nutrition 0.000 description 2
- 229910001456 vanadium ion Inorganic materials 0.000 description 2
- 239000005955 Ferric phosphate Substances 0.000 description 1
- 229910001096 P alloy Inorganic materials 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- QKDGGEBMABOMMW-UHFFFAOYSA-I [OH-].[OH-].[OH-].[OH-].[OH-].[V+5] Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[V+5] QKDGGEBMABOMMW-UHFFFAOYSA-I 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229960004887 ferric hydroxide Drugs 0.000 description 1
- 229940032958 ferric phosphate Drugs 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 229910000398 iron phosphate Inorganic materials 0.000 description 1
- IEECXTSVVFWGSE-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Fe+3] IEECXTSVVFWGSE-UHFFFAOYSA-M 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000004291 sulphur dioxide Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 150000003682 vanadium compounds Chemical class 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- 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
- C01B25/37—Phosphates of heavy metals
- C01B25/375—Phosphates of heavy metals of iron
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G31/00—Compounds of vanadium
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—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
- C02F1/70—Treatment of water, waste water, or sewage by reduction
-
- 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
- C02F1/66—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
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Removal Of Specific Substances (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention belongs to the field of industrial wastewater treatment, and particularly relates to a method for treating pentavalent vanadium in wastewater. Adding the byproduct ferrophosphorus slag of the yellow phosphorus industrial electric heating reduction step into acidified pentavalent vanadium wastewater, reducing the pentavalent vanadium through chemical reaction, and then precipitating the vanadium by adding alkali to achieve the purpose of removing the pentavalent vanadium in the wastewater. The invention provides a thought of adopting industrial byproducts as reducing agents aiming at the problems of high cost and low comprehensive benefit of the traditional reduction method. Meanwhile, the ferro-phosphorus slag can realize conversion and resource utilization. The method has the characteristics of low cost, simple operation, low equipment requirement, high comprehensive benefit and the like.
Description
Technical Field
A method for treating pentavalent vanadium in wastewater by using ferrophosphorus slag relates to a method for treating pentavalent vanadium in wastewater, and belongs to the technical field of industrial wastewater treatment.
Background
Vanadium is mainly derived from minerals associated with vanadium, such as vanadic magnetite, vanadium-containing slag, stone coal and vanadium-containing catalysts. Whatever the method used to extract the vanadium, it is leached, and a large amount of vanadium waste water is produced during washing and slag discharge. Most of vanadium compounds in the vanadium-containing wastewater are highly toxic high-vanadium ions. In addition, the mass fraction of vanadium extracted from the vanadium extraction, residues and other substances may reach 13-15%. The solid waste is not properly treated and can be re-permeated into the natural environment, so that vanadium pollution is caused. The industrial vanadium pollutant emission standard (gb26452-2011) also specifies the specific standard of industrial vanadium wastewater emission: namely, the vanadium emission limit of the existing enterprises can not exceed 2mg/L, the vanadium emission maximum limit of the new enterprises is 1mg/L, and the vanadium emission limit of the enterprises applying the specific water pollution emission limit is 0.3 mg/L.
The traditional vanadium-containing wastewater treatment method mainly comprises a reduction method, a sulfur dioxide precipitation method and an ion exchange method. Wherein the reduction method uses a chemical reducing agent to carry out reduction precipitation on high-valence vanadium element for removal, and the ion exchange resin method involves a large amount of ion exchange resin and equipment, so that the material cost and the equipment cost of the method are high. The sulphur dioxide precipitation process involves the use of polluting gases with a large potential risk.
The phosphorus-iron slag is a by-product of phosphorus chemical industry or silicate chemical industry, and is an alloy of phosphorus element and iron element. The ferrophosphorus has little metallic luster, large specific gravity, good conductivity and stable chemical property at normal temperature. The comprehensive utilization of the phosphorus-iron slag is an industrial problem due to the stable property of the phosphorus-iron slag. In practical industrial processes, it is often disposed of as waste residue, which also results in a lower price. The method has wide ferro-phosphorus sources in China, and 100-200 kg ferro-phosphorus can be produced when 1 ton of yellow phosphorus is produced only in the process of preparing phosphorus by an electric furnace method, wherein w (P) = 18% -26%, and w (Fe) is approximately equal to 70%.
Because the chemical valence of iron and phosphorus in the ferrophosphorus is lower, the ferrophosphorus has good reducibility, so the ferrophosphorus is used as a reducing agent of pentavalent vanadium in the process. Because the phosphorus-iron slag is an industrial byproduct, the method is a pentavalent vanadium sewage treatment method for treating waste by waste.
Disclosure of Invention
Aiming at the defects of high cost, environmental friendliness and the like of the traditional vanadium wastewater treatment method, the invention provides a method for treating pentavalent vanadium wastewater by using phosphorus-iron slag as a reducing agent. Soluble pentavalent vanadium is converted into low-valent vanadium which is easy to precipitate through the reaction of the phosphorus iron slag and the pentavalent vanadium, and the conversion of the phosphorus iron slag is realized at the same time. The method has good comprehensive economic benefit.
In order to achieve the purpose, the invention proves that the ferrophosphorus slag can have oxidation-reduction reaction with pentavalent vanadium under the acidic condition, so that the pentavalent vanadium is reduced into a low-valent state easy to precipitate, and meanwhile, the ferrophosphorus slag is converted into phosphate and iron ions which are easy to separate and utilize. Phosphate ions, iron ions and low-valence vanadium ions can be precipitated step by step through the post-treatment step so as to be utilized later. The method is more critical in the process of regulating and controlling the acidity of the feed liquid, and the acidity has a larger influence on the existence form and the oxidability of pentavalent vanadium. Because of the low solubility product of the relevant components, precipitation of the components can be achieved by adjusting the pH. In addition, the iron phosphate, the vanadium hydroxide and the ferric hydroxide can be separated by regulating and controlling the pH value and the aging time in the alkalization process.
Through related studies, it is believed that the reactions in which the pentavalent vanadium reduction process occurs are as follows. Wherein Fe 1.5 P represents the chemical composition of the ferrophosphorus slag, which reduces pentavalent vanadium to tetravalent vanadium, while the ferrophosphorus is oxidized to ferric phosphate and iron ions. The reaction is an exothermic and spontaneous process at normal temperature, as found by thermodynamic studies.
2Fe 1.5 P + 19VO 3 - + 60H + = 2FePO 4 + 19VO 2+ + 30 H 2 O + Fe 3+
The method for reducing pentavalent vanadium in wastewater by using ferrophosphorus slag comprises the following process steps:
(1) the pentavalent vanadium content in the wastewater was analyzed as the mass concentration of vanadium element (mol/L). Adding sulfuric acid into the feed liquid to adjust the pH value of the feed liquid, wherein the use amount of the sulfuric acid is 1-20 times of the content of the vanadium element;
(2) adding the ground ferrophosphorus slag into the feed liquid in the step (1), wherein the dosage of the ferrophosphorus slag is 0.5-5 times of the content of vanadium, and the reaction of ferrophosphorus and pentavalent vanadium is promoted by stirring, wherein the reaction temperature is in the range from normal temperature to 60 ℃;
(3) after reacting for 0.5-5 hours, adding alkali (sodium hydroxide or potassium hydroxide) to adjust the pH value of the feed liquid to 8-12;
(4) and (4) aging the feed liquid obtained in the step (3) for 1-24 hours, and filtering to obtain the treated feed liquid and filter residue.
The ferrophosphorus raw material used in the invention is a compound composed of phosphorus and iron, in particular to an industrial byproduct of phosphorus chemical industry and the like, and ferrophosphorus slag can be pretreated by adopting a grinding mode to facilitate the reaction of the ferrophosphorus slag and pentavalent vanadium.
The separation method of the aged feed liquid used in the present invention includes, but is not limited to, a gravity filter, a vacuum filter and a pressure filter.
Compared with the prior art, the method combines the reduction of the pentavalent vanadium and the utilization of the ferrophosphorus slag, reduces the treatment cost of the pentavalent vanadium by using waste to treat waste, and provides a new idea for the conversion and utilization of the ferrophosphorus slag. Therefore, the process has the characteristics of low cost, less investment and high comprehensive benefit.
Detailed Description
The present invention is further illustrated by the following examples, which are only basic illustrations of the concept of the present invention, but the present invention is not limited to the following examples, and any equivalent modifications made according to the technical solution of the present invention are within the scope of the present invention.
Example 1
And analyzing the pentavalent vanadium content in the pentavalent vanadium-containing waste water to be 2 g/L when a certain pentavalent vanadium electroplating waste liquid exists. Sulfuric acid (mass fraction is 98%) is added into the feed liquid, and the dosage is 2 times of vanadium content. Adding the ground ferrophosphorus slag into the feed liquid, wherein the dosage of the ferrophosphorus slag is 0.5 time of the vanadium content. After stirring and reacting for 1 hour at the temperature of 50 ℃, adding sodium hydroxide to adjust the pH value of the feed liquid to 8. And aging the obtained feed liquid for 24 hours, and filtering to obtain the treated feed liquid and filter residue. Analysis shows that the pentavalent vanadium reduction rate in the waste liquid is more than 99 percent.
Example 2
And analyzing the pentavalent vanadium content in the pentavalent vanadium-containing waste water to be 1 g/L when certain pentavalent vanadium waste liquid exists. Sulfuric acid (mass fraction is 98%) is added into the feed liquid, and the dosage is 8 times of vanadium content. Adding the ground ferrophosphorus slag into the feed liquid, wherein the dosage of the ferrophosphorus slag is 1 time of that of the vanadium. After stirring and reacting for 2 hours at normal temperature, adding sodium hydroxide to adjust the pH value of the feed liquid to 12. And aging the obtained feed liquid for 24 hours, and filtering to obtain the treated feed liquid and filter residue. Analysis shows that the pentavalent vanadium reduction rate in the waste liquid is more than 99 percent.
Claims (5)
1. The method for treating pentavalent vanadium in wastewater by using ferrophosphorus slag is characterized in that ferrophosphorus slag is used as a reducing agent, added into acidified pentavalent vanadium waste liquid and reacted, and the obtained feed liquid is subjected to alkali addition to adjust the pH value, aging and filtering to obtain vanadium-containing waste slag and treated clear liquid, and the method is characterized by comprising the following steps of:
(1) adding acid into the pentavalent vanadium-containing wastewater to acidify the feed liquid;
(2) adding ferrophosphorus slag into the feed liquid in the step (1) to react ferrophosphorus with pentavalent vanadium;
(3) adding alkali into the feed liquid obtained in the step (2) to alkalize the feed liquid;
(4) and (4) ageing the feed liquid obtained in the step (3), and filtering to obtain the treated feed liquid and filter residue.
2. The description of claim 1, wherein: the ferrophosphorus is a chemical industrial byproduct containing iron and phosphorus elements, including but not limited to minerals, mineral smelting products, phosphorus chemical industry or silicate chemical industry, and the like, and the chemical composition of the ferrophosphorus is FeP and Fe 2 P、Fe 3 P and mixtures thereof.
3. The description of claim 1, wherein: the acidification process can be carried out by using sulfuric acid or other acids, wherein the amount of the sulfuric acid (the mass fraction is 98%) is 1-20 times of the mole number of the pentavalent vanadium.
4. The description of claim 1, wherein: the dosage of the phosphorus-iron slag is 0.5 to 5 times of the mole number of the pentavalent vanadium.
5. The description of claim 1, wherein: adding alkali (sodium hydroxide or potassium hydroxide) during alkalization, and adjusting pH value of the feed liquid to 8-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210497651.0A CN114835097A (en) | 2022-05-09 | 2022-05-09 | Method for treating pentavalent vanadium in wastewater by using ferrophosphorus slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210497651.0A CN114835097A (en) | 2022-05-09 | 2022-05-09 | Method for treating pentavalent vanadium in wastewater by using ferrophosphorus slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114835097A true CN114835097A (en) | 2022-08-02 |
Family
ID=82569956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210497651.0A Pending CN114835097A (en) | 2022-05-09 | 2022-05-09 | Method for treating pentavalent vanadium in wastewater by using ferrophosphorus slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114835097A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1538239A (en) * | 1974-12-24 | 1979-01-17 | Clough Ltd A | Method of treating an aqueous salt solution |
| CN101058853A (en) * | 2007-05-18 | 2007-10-24 | 葫芦岛辉宏有色金属有限公司 | Method of reclaiming chemical industry products by using industrial slag containing vanadium, chromium, iron and phosphorous |
| CN105923836A (en) * | 2016-06-20 | 2016-09-07 | 东北大学 | Method for treating vanadium industrial wastewater through magnesium-process desulfurization waste |
| CN109750169A (en) * | 2019-03-28 | 2019-05-14 | 攀钢集团攀枝花钢铁研究院有限公司 | The method of vanadium chromium is separated from vanadium chromium solution |
| CN110643775A (en) * | 2019-09-30 | 2020-01-03 | 四川星明能源环保科技有限公司 | Resource utilization method of vanadium-containing steel slag |
| CN113493244A (en) * | 2020-03-20 | 2021-10-12 | 四川大学 | Method for reducing hexavalent chromium in wastewater by using ferrophosphorus slag |
-
2022
- 2022-05-09 CN CN202210497651.0A patent/CN114835097A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1538239A (en) * | 1974-12-24 | 1979-01-17 | Clough Ltd A | Method of treating an aqueous salt solution |
| CN101058853A (en) * | 2007-05-18 | 2007-10-24 | 葫芦岛辉宏有色金属有限公司 | Method of reclaiming chemical industry products by using industrial slag containing vanadium, chromium, iron and phosphorous |
| CN105923836A (en) * | 2016-06-20 | 2016-09-07 | 东北大学 | Method for treating vanadium industrial wastewater through magnesium-process desulfurization waste |
| CN109750169A (en) * | 2019-03-28 | 2019-05-14 | 攀钢集团攀枝花钢铁研究院有限公司 | The method of vanadium chromium is separated from vanadium chromium solution |
| CN110643775A (en) * | 2019-09-30 | 2020-01-03 | 四川星明能源环保科技有限公司 | Resource utilization method of vanadium-containing steel slag |
| CN113493244A (en) * | 2020-03-20 | 2021-10-12 | 四川大学 | Method for reducing hexavalent chromium in wastewater by using ferrophosphorus slag |
Non-Patent Citations (1)
| Title |
|---|
| 张凡: ""鲕状赤铁矿配加添加剂高温碳热还原研究"" * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101550485B (en) | Oxidative pressure acid leaching method for processing purified waste residue in zinc hydrometallurgy process | |
| CN109621276A (en) | A kind of method that richness iron copper ashes handles arsenic in nonferrous smelting waste acid | |
| KR100811872B1 (en) | Method of manufacturing raw material for stainless melting using feni containing sludge | |
| EP2684968A2 (en) | Method of manufacturing cobalt containing material using recycling residue of spent catalyst | |
| CN109055757B (en) | Method for recovering manganese dioxide and lead in anode slag of electrolytic manganese or electrolytic zinc | |
| CN112111661B (en) | Method for extracting vanadium by calcium-manganese composite roasting of vanadium slag | |
| CN101323914A (en) | Process for extracting vanadic anhydride by high calcium calcination | |
| CN102828025A (en) | Method for extracting V2O5 from stone coal navajoite | |
| CN111647754A (en) | Comprehensive utilization method of zinc-containing dust and sludge in steel plant | |
| CN112410561A (en) | Treatment method for neutralizing gypsum slag in vanadium precipitation wastewater | |
| CN113184821B (en) | Method for preparing ferric phosphate from iron-containing slag | |
| CN113862464B (en) | Method for recovering copper and scattered metal in black copper sludge | |
| CN109439889B (en) | Method for resource utilization of sodium vanadate | |
| CN101705377B (en) | Method for extracting vanadium from stone coal by wet-process enrichment and pyrogenic-process conversion | |
| CN113493244B (en) | Method for reducing hexavalent chromium in wastewater by using ferrophosphorus slag | |
| CN110747343B (en) | Method for preparing cobalt oxide from zinc smelting cobalt slag | |
| CN104775040B (en) | Comprehensive recycling process for acid leaching residues | |
| CN114835097A (en) | Method for treating pentavalent vanadium in wastewater by using ferrophosphorus slag | |
| CN108163880B (en) | Method for preparing gypsum powder by using zinc smelting waste acid | |
| JP2013237920A (en) | Treatment method of copper smelting flue cinder | |
| CN113136488B (en) | Wet treatment process for iron vitriol slag in zinc hydrometallurgy | |
| CN104060109A (en) | Method for extracting vanadium by virtue of leaching | |
| CN103831442B (en) | A kind of method being prepared Iron concentrate by copper nickel slag | |
| CN111304442A (en) | Method for removing F, Cl in secondary zinc oxide soot and preparing pure electrolyte | |
| US5624650A (en) | Nitric acid process for ferric sulfate production |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220802 |