CN113428961A - Method for recovering chromium-containing wastewater - Google Patents
Method for recovering chromium-containing wastewater Download PDFInfo
- Publication number
- CN113428961A CN113428961A CN202110556355.9A CN202110556355A CN113428961A CN 113428961 A CN113428961 A CN 113428961A CN 202110556355 A CN202110556355 A CN 202110556355A CN 113428961 A CN113428961 A CN 113428961A
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- China
- Prior art keywords
- chromium
- containing wastewater
- recovering
- acid
- wastewater
- 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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- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims abstract description 99
- 229910052804 chromium Inorganic materials 0.000 title claims abstract description 99
- 239000011651 chromium Substances 0.000 title claims abstract description 99
- 239000002351 wastewater Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 35
- 230000008878 coupling Effects 0.000 claims abstract description 25
- 238000010168 coupling process Methods 0.000 claims abstract description 25
- 238000005859 coupling reaction Methods 0.000 claims abstract description 25
- 229910001430 chromium ion Inorganic materials 0.000 claims abstract description 14
- 230000000536 complexating effect Effects 0.000 claims description 14
- 230000002378 acidificating effect Effects 0.000 claims description 13
- 239000000434 metal complex dye Substances 0.000 claims description 6
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 5
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 5
- 235000011152 sodium sulphate Nutrition 0.000 claims description 5
- 235000012745 brilliant blue FCF Nutrition 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
- 239000012452 mother liquor Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000008139 complexing agent Substances 0.000 claims description 2
- 239000007822 coupling agent Substances 0.000 claims description 2
- 238000003786 synthesis reaction Methods 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 abstract description 7
- 238000004064 recycling Methods 0.000 abstract description 6
- 238000004134 energy conservation Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000002253 acid Substances 0.000 description 29
- 230000000052 comparative effect Effects 0.000 description 23
- 239000000975 dye Substances 0.000 description 14
- RXCMFQDTWCCLBL-UHFFFAOYSA-N 4-amino-3-hydroxynaphthalene-1-sulfonic acid Chemical compound C1=CC=C2C(N)=C(O)C=C(S(O)(=O)=O)C2=C1 RXCMFQDTWCCLBL-UHFFFAOYSA-N 0.000 description 8
- 239000001045 blue dye Substances 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- ZRRGOUHITGRLBA-UHFFFAOYSA-N stattic Chemical compound [O-][N+](=O)C1=CC=C2C=CS(=O)(=O)C2=C1 ZRRGOUHITGRLBA-UHFFFAOYSA-N 0.000 description 6
- QELUYTUMUWHWMC-UHFFFAOYSA-N edaravone Chemical compound O=C1CC(C)=NN1C1=CC=CC=C1 QELUYTUMUWHWMC-UHFFFAOYSA-N 0.000 description 4
- 239000001047 purple dye Substances 0.000 description 3
- DOPJTDJKZNWLRB-UHFFFAOYSA-N 2-Amino-5-nitrophenol Chemical compound NC1=CC=C([N+]([O-])=O)C=C1O DOPJTDJKZNWLRB-UHFFFAOYSA-N 0.000 description 2
- RWZYAGGXGHYGMB-UHFFFAOYSA-N anthranilic acid Chemical compound NC1=CC=CC=C1C(O)=O RWZYAGGXGHYGMB-UHFFFAOYSA-N 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- YLKCHWCYYNKADS-UHFFFAOYSA-N 5-hydroxynaphthalene-1-sulfonic acid Chemical compound C1=CC=C2C(O)=CC=CC2=C1S(O)(=O)=O YLKCHWCYYNKADS-UHFFFAOYSA-N 0.000 description 1
- DQIVFTJHYKDOMZ-UHFFFAOYSA-N 96-67-3 Chemical compound NC1=CC([N+]([O-])=O)=CC(S(O)(=O)=O)=C1O DQIVFTJHYKDOMZ-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- -1 chromium ions Chemical class 0.000 description 1
- 238000006193 diazotization reaction Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- IAAKNVCARVEIFS-UHFFFAOYSA-M sodium;4-hydroxynaphthalene-1-sulfonate Chemical compound [Na+].C1=CC=C2C(O)=CC=C(S([O-])(=O)=O)C2=C1 IAAKNVCARVEIFS-UHFFFAOYSA-M 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/62—Heavy metal 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
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention belongs to the field of environmental protection, and particularly relates to a method for recovering chromium-containing wastewater. The invention solves the problems of difficult treatment and high cost of the prior chromium-containing wastewater, realizes the recycling of the wastewater by recycling the chromium ions and the coupling compound in the chromium-containing wastewater, and meets the requirements of energy conservation and emission reduction.
Description
Technical Field
The invention belongs to the field of environmental protection, and particularly relates to a method for recovering chromium-containing wastewater.
Background
In the production of acid metal complex dyes, particularly asymmetric 1:2 metal complex dyes, 1:1 chromium complex needs to be synthesized firstly, and when the 1:1 chromium complex is synthesized, the using mass of chromium ions needs to be excessive by 5-30% generally so as to ensure the stability and the sufficiency of chromium complex reaction, therefore, the generated mother liquor water not only contains coupling compounds, 1:1 chromium complex compounds and 1:2 chromium complex compounds, but also contains a large amount of inorganic salts such as chromium ions, sodium sulfate and the like, the wastewater treatment difficulty is very high, and the environmental pollution problem is very serious.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a method for recovering chromium-containing wastewater, which solves the problems of difficult treatment and high cost of the existing chromium-containing wastewater, realizes the recovery and utilization of the wastewater by utilizing the recovery of chromium ions and coupling compounds in the chromium-containing wastewater, and meets the requirements of energy conservation and emission reduction.
In order to achieve the technical purpose, the technical scheme of the invention is as follows:
a method for recovering chromium-containing wastewater uses the chromium-containing wastewater in acidic metal complex dye, and uses the chromium-containing wastewater as complexing agent.
And recovering sodium sulfate in the chromium-containing wastewater as a product filler.
The chromium-containing wastewater is added when the coupling is finished and the volume is enlarged.
The chromium-containing wastewater contains a coupling agent and a large amount of chromium ions.
Further, the chromium-containing wastewater also contains a 1:1 chromium complex and a 1:2 chromium complex.
Further, the chromium-containing wastewater is mother liquor water generated in the synthesis of a 1:1 chromium complex in the process of complexing the acidic metal complex dye.
Further, the chromium-containing wastewater is from one of 315 red 1:1 chromium complexing process, 59 yellow 1:1 chromium complexing process, 405 red 1:1 chromium complexing process, 317 blue 1:1 chromium complexing process, 284 blue 1:1 chromium complexing process and 405 red 1:1 chromium complexing process.
From the above description, it can be seen that the present invention has the following advantages:
1. the invention solves the problems of difficult treatment and high cost of the prior chromium-containing wastewater, realizes the recycling of the wastewater by recycling the chromium ions and the coupling compound in the chromium-containing wastewater, and meets the requirements of energy conservation and emission reduction.
2. The invention takes the sodium sulfate as the product filler, effectively reduces the discharge amount of waste water and improves the yield of the product.
Detailed Description
The present invention is described in detail with reference to examples, but the present invention is not limited to the claims.
Example 1
Acid 172 black dye
Example 1
And adding 3 tons of 315 red 1:1 wastewater after 9Kmol of 6-nitro-1, 2, 4-acid oxygen is added into the chromium complex solution for coupling, and obtaining a 172 black product after subsequent treatment (the subsequent treatment is a conventional process for acid metal dyes). Wherein, the 315 red 1:1 wastewater is prepared by coupling 2-amino-4-nitrophenol-6-sulfonic acid diazotization and 1-phenyl-3-methyl-5-pyrazolone, and then reacting with chromium ions to form a 1:1 chromium complex.
Comparative example 1
Adding 9kmol of 6-nitro-1, 2, 4-acid oxygen into the chromium complex solution, forming a 1:1 chromium complex after coupling, and obtaining a 172 black product after subsequent treatment.
Compared with the comparative example 1, the quality indexes of the color light, the fastness and the solubility of the 172 black dye in the example 1 and the comparative example 1 are basically the same, compared with the comparative example 1, the use amount of the chromium complex solution in the example 1 is reduced by 5%, the yield is improved by 0.2%, the product strength is reduced by 10%, but the use of the chromium complex solution is not influenced.
Example 2
Acid 172 black dye
Example 2
And after 9Kmol of 6-nitro-1, 2, 4-acid oxysome is added into the chromium complex solution for coupling, 6 tons of acid 59 yellow wastewater is supplemented, and a 172 black product is obtained after subsequent treatment (the subsequent treatment is a conventional process of acid metal dyes). Wherein, the acidic 59 yellow wastewater is prepared by diazotizing anthranilic acid, coupling with 1-phenyl-3-methyl-5-pyrazolone, and then reacting with chromium ions to form a 1:1 chromium complex.
Comparative example 2
Adding 9kmol of 6-nitro-1, 2, 4-acid oxygen into the chromium complex solution, forming a 1:1 chromium complex after coupling, and obtaining a 172 black product after subsequent treatment.
Compared with the comparative example 2, the quality indexes of color light, fastness and solubility of the 172 black dye of the example 2 and the comparative example 2 are basically the same, compared with the comparative example 2, the use amount of the chromium complex solution in the example 2 is reduced by 6%, the yield is improved by 0.2%, the product strength is reduced by 15%, but the use of the chromium complex solution is not influenced.
Example 3
Acid 172 black dye
Example 3
And after 9Kmol of 6-nitro-1, 2, 4-acid oxygen is added into the chromium complex solution for coupling, 3 tons of acid 405 red wastewater is added, and a 172 black product is obtained after subsequent treatment (the subsequent treatment is a conventional process for acid metal dyes). Wherein, the acid 405 red wastewater is prepared by coupling 1,2,4 acid oxysome with 1-phenyl-3-methyl-5-pyrazolone, and then reacting with chromium ions to form a 1:1 chromium complex.
Comparative example 3
Adding 9Kmol of 6-nitro-1, 2, 4-oxysome into the chromium complex solution, coupling to form a 1:1 chromium complex, and performing subsequent treatment to obtain a 172 black product.
Compared with the comparative example 3, the quality indexes of the color light, the fastness and the solubility of the 172 black dye in the example 3 and the comparative example 3 are basically the same, compared with the comparative example 3, the use amount of the chromium complex solution in the example 3 is reduced by 4%, the yield is improved by 0.4%, the product strength is reduced by 12%, but the use of the chromium complex solution is not influenced.
Example 4
Acid 193 blue dye
Example 4
And adding 3 tons of acidic 317 blue wastewater after 9Kmol of 1,2, 4-acid oxysome is added into the chromium complex solution for coupling, and obtaining the acidic 193 blue dye after subsequent treatment (the subsequent treatment is a conventional process for acidic metal dyes). Wherein the acidic 317 blue wastewater is prepared by diazotizing 2-amino-5-nitrophenol, coupling with 1-naphthol-4-sulfonic acid, and then reacting with chromium ions to form a 1:1 chromium complex.
Comparative example 4
And adding 9Kmol of 1,2, 4-acid oxysome into the chromium complex solution, coupling to form a 1:1 chromium complex, and performing subsequent treatment to obtain the acid 193 blue dye.
Compared with the comparative example 4, the quality indexes of the color light, the fastness and the solubility of the acid 193 blue dye in the example 4 and the comparative example 4 are basically the same, compared with the comparative example 4, the use amount of the chromium complex solution in the example 4 is reduced by 5 percent, the yield is improved by 2 percent, the product strength is reduced by 16 percent, but the use of the chromium complex solution is not influenced.
Example 5
Acid 193 blue dye
Example 5
And after 9Kmol of 1,2, 4-acid oxysome is added into the chromium complex solution for coupling, 5 tons of acidic 284-blue wastewater is supplemented, and the acidic 193-blue dye is obtained after subsequent treatment (the subsequent treatment is a conventional process for acidic metal dyes). Wherein, the acidic 284-blue wastewater is prepared by diazotizing 2-amino-5-nitrophenol, coupling with 1-naphthol-5-sulfonic acid, and then reacting with chromium ions to form a 1:1 chromium complex.
Comparative example 5
And adding 9Kmol of 1,2, 4-acid oxysome into the chromium complex solution, coupling to form a 1:1 chromium complex, and performing subsequent treatment to obtain the acid 193 blue dye.
Compared with the comparative example 5, the quality indexes of the color light, the fastness and the solubility of the acid 193 blue dye in the example 5 and the comparative example 5 are basically the same, compared with the comparative example 5, the use amount of the chromium complex solution in the example 5 is reduced by 5 percent, the yield is improved by 2 percent, the product strength is reduced by 16 percent, but the use of the chromium complex solution is not influenced.
Example 6
Acid 90 violet dye
Example 6
And adding 4 tons of acid 405 red wastewater after 9Kmol of 1,2, 4-acid oxysome into the chromium complex solution for coupling, and performing subsequent treatment (the subsequent treatment is a conventional process for acid metal dyes) to obtain the acid 90 purple dye. Wherein, the acid 405 red wastewater is prepared by coupling 1,2,4 acid oxygen and 1-phenyl-3-methyl-5-pyrazolone and then reacting with chromium ions to form a 1:1 chromium complex.
Comparative example 6
And adding 9Kmol of 1,2, 4-acid oxygen into the chromium complex solution, coupling to form a 1:1 chromium complex, and performing subsequent treatment to obtain the acid 90 violet dye.
Compared with the quality indexes of color light, fastness and solubility of the acid 90 purple dye in the example 6 and the acid 90 purple dye in the comparative example 6, the use amount of the chromium complex solution in the example 6 is reduced by 11%, the yield is improved by 4%, the product strength is reduced by 15%, but the use of the chromium complex solution is not influenced, wherein the quality indexes of the chromium complex solution are basically the same as those of the chromium complex solution in the comparative example 6.
In summary, the invention has the following advantages:
1. the invention solves the problems of difficult treatment and high cost of the prior chromium-containing wastewater, realizes the recycling of the wastewater by recycling the chromium ions and the coupling compound in the chromium-containing wastewater, and meets the requirements of energy conservation and emission reduction.
2. The invention takes the sodium sulfate as the product filler, effectively reduces the discharge amount of waste water and improves the yield of the product.
It should be understood that the detailed description of the invention is merely illustrative of the invention and is not intended to limit the invention to the specific embodiments described. It will be appreciated by those skilled in the art that the present invention may be modified or substituted equally as well to achieve the same technical result; as long as the use requirements are met, the method is within the protection scope of the invention.
Claims (8)
1. A method for recovering chromium-containing wastewater is characterized by comprising the following steps: the chromium-containing wastewater is used in the acidic metal complex dye.
2. The method for recovering chromium-containing wastewater according to claim 1, wherein: the chromium-containing wastewater is used as a complexing agent.
3. The method for recovering chromium-containing wastewater according to claim 1, wherein: and recovering sodium sulfate in the chromium-containing wastewater as a product filler.
4. The method for recovering chromium-containing wastewater according to claim 1, wherein: the chromium-containing wastewater is added when the coupling is finished and the volume is enlarged.
5. The method for recovering chromium-containing wastewater according to claim 1, wherein: the chromium-containing wastewater contains a coupling agent and a large amount of chromium ions.
6. The method for recovering chromium-containing wastewater according to claim 5, wherein: the chromium-containing wastewater also contains a 1:1 chromium complex and a 1:2 chromium complex.
7. The method for recovering chromium-containing wastewater according to claim 5, wherein: the chromium-containing wastewater is mother liquor water generated in the synthesis of a 1:1 chromium complex in the process of complexing acidic metal complex dye.
8. The method for recovering chromium-containing wastewater according to claim 7, wherein: the chromium-containing wastewater is from one of 315 red 1:1 chromium complexing process, 59 yellow 1:1 chromium complexing process, 405 red 1:1 chromium complexing process, 317 blue 1:1 chromium complexing process, 284 blue 1:1 chromium complexing process and 405 red 1:1 chromium complexing process.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110556355.9A CN113428961A (en) | 2021-05-21 | 2021-05-21 | Method for recovering chromium-containing wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110556355.9A CN113428961A (en) | 2021-05-21 | 2021-05-21 | Method for recovering chromium-containing wastewater |
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| CN113428961A true CN113428961A (en) | 2021-09-24 |
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| CN202110556355.9A Pending CN113428961A (en) | 2021-05-21 | 2021-05-21 | Method for recovering chromium-containing wastewater |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1373094A (en) * | 2002-04-03 | 2002-10-09 | 武汉化工学院 | Process for recovering chrome yellow from chrome containing sewage |
| CN102898857A (en) * | 2012-09-27 | 2013-01-30 | 汤宝祥 | Circulation applying process for mother liquor waste water of coupling reaction |
| CN103964600A (en) * | 2013-02-05 | 2014-08-06 | 浙江龙盛集团股份有限公司 | Recycling method for azo disperse dye waste water |
| CN105130064A (en) * | 2015-09-25 | 2015-12-09 | 深圳前海中盛环保科技有限公司 | Novel method for treating chrome-containing wastewater and recycling chrome of chrome pigments |
| CN106277456A (en) * | 2016-08-30 | 2017-01-04 | 浙江奇彩环境科技股份有限公司 | A kind of waste electroplating liquor containing chromium resource prepares the method that ferrochrome is black |
-
2021
- 2021-05-21 CN CN202110556355.9A patent/CN113428961A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1373094A (en) * | 2002-04-03 | 2002-10-09 | 武汉化工学院 | Process for recovering chrome yellow from chrome containing sewage |
| CN102898857A (en) * | 2012-09-27 | 2013-01-30 | 汤宝祥 | Circulation applying process for mother liquor waste water of coupling reaction |
| CN103964600A (en) * | 2013-02-05 | 2014-08-06 | 浙江龙盛集团股份有限公司 | Recycling method for azo disperse dye waste water |
| CN105130064A (en) * | 2015-09-25 | 2015-12-09 | 深圳前海中盛环保科技有限公司 | Novel method for treating chrome-containing wastewater and recycling chrome of chrome pigments |
| CN106277456A (en) * | 2016-08-30 | 2017-01-04 | 浙江奇彩环境科技股份有限公司 | A kind of waste electroplating liquor containing chromium resource prepares the method that ferrochrome is black |
Non-Patent Citations (1)
| Title |
|---|
| 《化工百科全书》编辑委员会: "《化工百科全书 （第15卷）》", 31 December 1997, 化学工业出版社 * |
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