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A composition and treatment method for treating mink fur oxidative dyeing wastewater

A technology for oxidative dyeing and wastewater, applied in chemical instruments and methods, water pollutants, multi-stage water treatment, etc. Good removal, low cost effect

Active Publication Date: 2018-12-28
北京泛博清洁技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mordant of oxidation dyes is usually ferric sulfate, copper sulfate or potassium dichromate. Some processes will also use strong oxidizing substances such as hydrogen peroxide. If the above raw materials remain in boiling water, they will cause serious pollution to the environment, making the waste liquid unqualified for environmental protection. In today's green environment is not allowed
[0003] At present, there are few publicly reported technologies for treating oxidative dyeing wastewater, and these disclosed treatment technologies also have the following disadvantages: the chroma can only temporarily meet the discharge standard, and yellowing will occur after a period of time, which will still pollute the environment. and cannot be recycled

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1 oxidation wastewater treatment process

[0040] 1. Add 1000mL of oxidation dyeing bath solution (oxidation dye black KC concentration 1g / L), add 1g of ferrous sulfate monohydrate powder under stirring state, fully stir and dissolve, and there are no obvious ferrous sulfate particles by visual inspection.

[0041] 2. Add 5g of hydrogen peroxide at room temperature and continue stirring for 2 hours.

[0042] 3. After the oxidation reaction is completed, add dissolved polyacrylamide (10g+20g water) and stir for 2h.

[0043] 4. Add the dissolved dicyandiamide formaldehyde resin (1mL+10g water) and stir for 30min at room temperature.

[0044] 5. Filter. Add 1% sodium peroxide to the filtrate (that is, add 1 g of reagent to 100 mL of waste water, the same below).

[0045] 6. Experimental results:

[0046] (1) The wastewater treatment liquid is colorless and transparent;

[0047] (2) The COD of wastewater treatment liquid is 15, which can be discharged direct...

Embodiment 2

[0049] Embodiment 2 oxidation wastewater treatment process

[0050] 1. Add 2g of ferrous sulfate monohydrate powder to 1000mL oxidation dyeing solution (dye concentration: 2g / L) under stirring, stir and dissolve thoroughly, and there are no obvious ferrous sulfate particles by visual inspection.

[0051] 2. Add 10g of hydrogen peroxide at room temperature and continue stirring for 2 hours.

[0052] 3. After the oxidation reaction is completed, add dissolved polyacrylamide (17g+20g water) and stir for 2 hours.

[0053] 4. Add the dissolved dicyandiamide formaldehyde resin (1.8mL+20g water) and stir for 30min at room temperature.

[0054] 5. Filter. Add 2% sodium peroxide to the filtrate.

[0055] 6. Experimental results:

[0056] (1) The wastewater treatment liquid is colorless and transparent;

[0057] (2) The COD of wastewater treatment liquid is 31, which can be discharged directly;

[0058] (3) The wastewater treatment liquid can be circulated for oxidative dyeing of ...

Embodiment 3

[0059] Embodiment 3 oxidation wastewater treatment process

[0060] 1. Add 4g of ferrous sulfate monohydrate powder to 1000mL oxidation dyeing bath solution (dye concentration: 3g / L) under stirring, stir well to dissolve, and there are no obvious ferrous sulfate particles by visual inspection.

[0061] 2. Add 20g of hydrogen peroxide at room temperature and continue stirring for 2 hours.

[0062] 3. After the oxidation reaction is finished, add dissolved polyacrylamide (25g+30g water) and stir for 2h.

[0063] 4. Add the dissolved dicyandiamide formaldehyde resin (2.5mL+30g water), and stir for 30min at room temperature.

[0064] 5. Filter. Add 3% sodium peroxide to the filtrate.

[0065] 6. Experimental results:

[0066] (1) The wastewater treatment liquid is colorless and transparent;

[0067] (2) The COD of wastewater treatment liquid is 54, which can be discharged directly;

[0068] (3) The wastewater treatment liquid can be circulated for oxidative dyeing of mink fur....

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Abstract

The invention provides a composition for treating marten oxidation dyeing wastewater and a treatment method. The composition is prepared from, by weight, 1-10 parts of ferrous sulfate, 5-50 parts of hydrogen peroxide, 10-50 parts of flocculant, 1-10 parts of oxidation decoloring agent and 1-5 parts of COD remover. The treatment method comprises the steps that ferrous sulfate and hydrogen peroxide are added to wastewater to be treated according to the formula, and an oxidation reaction is conducted; the flocculant is added to be reacted till sediments are not generated; the oxidation decoloring agent is added to be reacted, the sediments are removed through filtration, and the COD remover is added to be reacted finally. By means of the composition for treating the marten oxidation dyeing wastewater and the treatment method, the effects of reducing the cost, decoloring permanently, shortening a treatment cycle and the like can be achieved.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a composition and a treatment method for treating mink fur oxidative dyeing wastewater. Background technique [0002] With the rapid development of science and technology, the dye industry and printing and dyeing technology have been improved, which greatly improves the stability of the dye structure and increases the difficulty of decolorization. At present, the problem of printing and dyeing and dye wastewater treatment has become a major problem that urgently needs to be solved in domestic and foreign wastewater treatment. Among all dye wastewaters, oxidation dye wastewater is the most difficult to treat, and the color of decolorized wastewater will become darker after a period of time. The mordant of oxidation dyes is usually ferric sulfate, copper sulfate or potassium dichromate. Some processes will also use strong oxidizing substances such as hydrogen peroxide. If the a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04C02F103/30
CPCC02F1/56C02F1/72C02F1/722C02F9/00C02F2101/308C02F2103/30C02F2301/08C02F2305/026
Inventor 王亮郑超斌郑红超郝安生
Owner 北京泛博清洁技术研究院有限公司
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