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Chloroactic acid method for treating wastewater of glycine, and comprehensive utilization method

A chloroacetic acid method glycine and wastewater treatment technology, which can be used in water/sewage treatment, heating water/sewage treatment, extraction water/sewage treatment, etc., and can solve problems such as pollution

Inactive Publication Date: 2007-05-09
ZHONGKEQUAN WUYING ENVIRONMENT PROTECTION BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main feature of the present invention is that it completely solves the problem of waste water pollution and achieves zero discharge of waste water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1, get 100ml dealcoholization waste water (30 ℃) and heat to about 105 ℃, evaporate concentration dehydration, steam 10 grams of water, cool to 30 ℃ to precipitate ammonium chloride, filter and separate to obtain 4 grams of ammonium chloride.

Embodiment 2

[0016] Embodiment two, get 100ml of chloroacetic acid concentration (mass) to be 5% and extract with 30% TOA / 20% n-octanol / 50% kerosene, the extraction rate of chloroacetic acid is more than 95%.

Embodiment 3

[0017] Embodiment three, thoroughly oxidize and decompose chloroacetic acid and formaldehyde with the patented product ammonium percarbonate, and finally the formaldehyde and chloroacetic acid in the sewage can be reused.

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PUM

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Abstract

This invention is aimed to treating toxic wastewater from glycine production by chloroacetic acid method and recovering valuable resources from the wastewater. This invention utilizes evaporation, concentration, cooling and crystallization to remove amine, conversion to remove chloroacetic acid and dichloroacetic acid, alcohol-precipitation to remove glycine and iminodiacetic acid, extraction to remove acetic acid, monochloroacetic acid and dichloroacetic acid, and oxidative decomposition to completely decompose toxic substances in the wastewater. This invention provides a good method for environmental protection engineering and resource recycling.

Description

technical field [0001] The technology relates to a chloroacetic acid method glycine waste water and a comprehensive utilization method, and belongs to the fields of environmental protection and fine chemical industry. technical background [0002] In recent years, with the rapid development of glyphosate herbicides in the world, the production of glyceric acid, which is the main raw material of glyphosate, has also developed rapidly in my country. Some enterprises have grown from several hundred tons to several thousand tons per year. tons, and developed from a few thousand tons to tens of thousands of tons. Glycine, the main raw material of glyphosate, which is the fastest growing, the largest output and the largest exporter in my country, is mostly produced by the chloroacetic acid method. The production of glycine has increased, but problems have also arisen. The production of this green product discharges a large amount of waste water. One ton of product discharges three...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F1/58C02F1/04C02F1/26C02F1/72
Inventor 张天德刘长飞张怡李丽
Owner ZHONGKEQUAN WUYING ENVIRONMENT PROTECTION BEIJING
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