Integrated process for recycling glyphosate mother liquor

Abstract

The purpose of the invention is to provide an integrated process for processing mother liquor generated in the process of preparing glyphosate to solve the problems of higher cost and resource solution in glyphosate mother liquor processing. The process comprises the steps of: pre-treatment of mother liquor, integrated film separation, oxidation treatment, crystal separation, chemical phosphorus removal, film separation dechlorination and biochemical treatment. According to the sales condition of water aqua, the dosage of the mother liquor going into a film separation system is adjusted; the market demand is adapted; meanwhile, the cost is controlled; the influences of device maintenance and the like are avoided, and normal operation of a glyphosate production device is guaranteed. The glyphosate obtained from integrated film separation can be used for producing 33% of glyphosate ammonium salt agent; organic phosphorus obtained from crystal separation and chemical phosphorus removal can be applied to phosphate fertilizer production; sodium chloride solution obtained from film separation can be applied to chlor-alkali production, and the other parts can go into biochemical treatment and be discharged with standards.

Description

technical field

[0001] The invention relates to a process for treating glyphosate mother liquor, in particular to an integrated process for treating mother liquor produced in the process of preparing glyphosate. Background technique

[0002] Glyphosate is an environmentally friendly broad-spectrum herbicide that can effectively remove 76 of the 78 most harmful weeds in the world. With my country's accession to the WTO and the improvement of people's living environment requirements, glyphosate is in line with the development direction of the world's pesticide industry because of its high efficiency, low toxicity, broad spectrum, and no residue. It is the most brilliant chemical pesticide in the world in the 20th century. With the rapid promotion of global glyphosate-resistant transgenic crops in the 21st century, their market prospects will be even broader.

[0003] Since glyphosate has a certain solubility in water, a certain amount of glyphosate mother liquor will inevita...

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