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Industrial waste liquid regenerant and preparation method thereof

A regenerant and aqueous solution technology, which is applied in the field of water-soluble polymer regenerant and its preparation, can solve the problems of high iron recovery rate, secondary pollution, and large power consumption, so as to improve quality, reduce enterprise costs, and improve environmental benefits Effect

Inactive Publication Date: 2020-05-12
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The recovery treatment method has simple process, high iron recovery rate, can obtain high-purity iron, does not produce secondary pollution, does not reduce the acidity of waste water after recovery and treatment, can regenerate and reuse pickling waste water, and is suitable for pickling steel with pH less than 2 Wastewater is treated, but investment in diaphragm electrolyzer equipment is required, and the power consumption is relatively large
CN107417007 proposes a resin recovery process for electroplating waste acid and dilute acid waste water. In the first step, the discharged waste acid water is filtered to remove solid particle impurities; in the second step, the waste water is removed by cation exchange resin and chelating resin Metal ions such as aluminum, iron, lead, etc., in this process can be recycled, with high recovery efficiency, energy saving, environmental protection, and high safety, but the mixed resin needs to be regenerated, which is prone to secondary pollution

Method used

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  • Industrial waste liquid regenerant and preparation method thereof
  • Industrial waste liquid regenerant and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0031] The parts by mass are calculated in grams. 15 grams of acrylic acid is used as an unsaturated acid material, 7.5 grams of acrylamide is used as an unsaturated amide material, and 0.5 grams of thioglycolic acid is used as a molecular weight modifier material, and they are mixed in proportion to prepare a raw material mixture for later use. Add 100 grams of distilled water to the reactor equipped with stirrer, thermometer, dropping funnel and nitrogen conduit, start stirring, replace with argon for 15 minutes, when the water bath is heated to 80 ° C, add 3 grams of 10% super Aqueous solution of ammonium sulfate. After 10 minutes, the above-mentioned raw material mixture was continuously added dropwise with a dropping funnel, and the dropping speed was controlled, and the dropping was completed within 2.5 hours. The temperature of the system was raised to 85°C and kept for 1.5 hours. Under the action of stirring, the system is lowered to room temperature, and the material...

Embodiment 2

[0034] The parts by mass are expressed in grams, and an aqueous solution is prepared with 12 grams of acrylic acid as the unsaturated acid material and 20 grams of water, and cooled to room temperature. 5 grams of acrylamide and 2.5 grams of N,N-dimethylacrylamide are used as the unsaturated amide material, and 1.3 grams of mercaptopropionic acid is used as the molecular weight regulator material, which is mixed with the unsaturated acid material to form a raw material mixture, which is set aside. Add 80 grams of distilled water to the reactor equipped with stirrer, thermometer, dropping funnel and nitrogen conduit, start stirring, replace with nitrogen for 20 minutes, when the water bath is heated to 80°C, add 6 grams of persulfuric acid with a mass concentration of 3%. Potassium aqueous solution. After 10 minutes, the above-mentioned raw material mixture was continuously added dropwise with a dropping funnel, and the dropping speed was controlled, and the dropping was comple...

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Abstract

The invention relates to an industrial waste liquid regenerant and a preparation method thereof. The regenerant is prepared by adjusting copolymerization of the following raw materials through an aqueous solution, and the regenerant is prepared from, by weight, 10-20 parts of unsaturated acid, 10-20 parts of unsaturated amide, 0.5-5 parts of a molecular weight regulator, 0.1-2.0 parts of an initiator, and 100 parts of water. A dust suppressant is prepared by adopting unsaturated acid and unsaturated amide through an aqueous solution regulation copolymerization technology, various metal ions are promoted to flocculate and settle through coordination and crosslinking of the metal ions, separated floccules can be used as an industrial raw material, and recycled acid liquor is locally returnedand reused. The preparation method is simple in preparation process, good in comprehensive performance, safe and environment-friendly.

Description

technical field [0001] The invention relates to a regeneration agent in the field of metal processing liquid waste recycling, in particular to a water-soluble polymer regeneration agent and a preparation method thereof. Background technique [0002] An essential link before electroplating of steel and metal products is pickling, usually using hydrochloric acid to remove oxides and oil stains on the metal surface. Hydrochloric acid improves the efficiency of metal electroplating and the quality of the product surface, but also produces a large amount of hydrochloric acid waste: the concentration of hydrochloric acid is lower than 6%, and the concentration of ferrous chloride is higher than 10%, which has caused huge potential harm to the surrounding environment . [0003] The recovery and treatment of liquid waste acid generally adopts concentration and hydrolysis technology. For the treatment of hydrochloric acid waste liquid, part of it is used to absorb hydrogen chloride...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/06C08F220/56C08F220/54C08F2/38C23G1/36
CPCC08F2/38C08F220/06C23G1/36C08F220/56C08F220/54
Inventor 张福强刘晓莉张建奇殷福星
Owner HEBEI UNIV OF TECH
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