Treatment method for p-beta hydroxyethyl sulfone acetanilide mother liquor waste water

A technology of hydroxyethyl sulfone acetanilide mother and treatment method is applied in the field of treatment of p-β hydroxyethyl sulfone acetanilide mother liquor wastewater, and achieves the effects of good dyeing performance, high reactivity and good lifting power
CN103756359AActive Publication Date: 2014-04-30ZHEJIANG JINGGUANG IND
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZHEJIANG JINGGUANG IND
Publication Date
2014-04-30

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Abstract

The invention discloses a treatment method for p-beta hydroxyethyl sulfone acetanilide mother liquor waste water. The treatment method comprises the following steps of performing pretreatment on p-beta hydroxyethyl sulfone acetanilide mother liquor water to recover p-beta hydroxyethyl sulfone acetanilide in mother liquor waste water, and then sequentially performing diazo reaction, coupling, primary condensation and secondary condensation to prepare a yellow reactive dye. According to the treatment method disclosed by the invention, p-beta hydroxyethyl sulfone acetanilide in the p-beta hydroxyethyl sulfone acetanilide mother liquor waste water produced in the production process of para-ester is reasonably utilized, and p-beta hydroxyethyl sulfone acetanilide in the waste water is used for synthesizing an intermediate of the reactive dye after hydrolysis, so that the waste is turned into treasure, the high-concentration waste water produced in the production process of the para-ester can achieve up-to-standard emission after treatment at the relatively low cost, and the para-ester and the related industry of the para-ester can realize sustained development.
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Description

technical field

[0001] The invention relates to the technical field of industrial wastewater treatment, in particular to a method for treating p-β-hydroxyethylsulfone acetanilide mother liquor wastewater. Background technique

[0002] In recent years, with the rapid development of industry, my country's dye industry has achieved great development, but it has also brought serious environmental pollution problems. Among them, the wastewater produced by the dye industry and dye intermediate industry is one of the most polluted industrial wastewater. Para-ester is an important intermediate of reactive dyes. It is used to synthesize EF type, KN type, M / KM type, ME type and other vinyl sulfone-containing reactive dyes, and is widely used in printing and dyeing, textile, chemical and other industries. The existing para-ester production process produces a large amount of wastewater while obtaining the target product para-ester. Among the wastewater, the wastewater containing p-β-hy...

Claims

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