Processing technology for recovering and utilizing mother solution of glyphosate as resource

Abstract

The invention relates to a processing technology for recovering and utilizing the mother solution of glyphosate as a resource, which comprises the following concrete steps: firstly, preprocessing themother solution of glyphosate, and then, separating, concentrating and recovering the glyphosate by a membrane combination technique; returning the concentrated solution to a crystallization working section in the production process of the glyphosate after membrane filtration, thereby effectively recovering and utilizing the glyphosate resource; adsorbing the diluted solution with high efficiency,and further recovering and utilizing the glyphosate; and processing the adsorbed solution by catalytic oxidation with high efficiency to recover the sodium chloride resource with higher purity. The invention achieves the purposes of recovering and utilizing the glyphosate in the mother solution as a resource to the maximum extent and efficiency separating, recovering and utilizing the sodium chloride as a resource, has the advantages of economical technology, high efficiency, good system stability, high safety, easy operation, convenient industrial amplification, and the like, solves the problems of the soil salinization caused by applying water agents with high content of sodium chloride, the processing and disposal of solid wastes of the sodium chloride and the environment pollution, and effectively recovers and utilizes the resources of the glyphosate and the sodium chloride in the mother solution of the glyphosate.

Description

Technical field:

[0001] The invention relates to a treatment process for resource recovery and utilization of glyphosate mother liquor. Background technique:

[0002] Glyphosate (N-(phosphonomethyl) glycine) is a high-efficiency, low-toxicity, broad-spectrum, and safe herbicide. It has good systemic and conductive properties, and it can control perennial deep-rooted weeds It is very effective and widely used in agriculture, forestry, animal husbandry, horticulture, etc. It is currently the largest pesticide variety in the world. In recent years, due to glyphosate-resistant transgenic crops and energy shortages, the large-scale promotion of biofuel crops has provided new opportunities for the production and application of glyphosate.

[0003] There are two main production and synthesis processes of glyphosate: glycine route and IDA route. Most domestic enterprises use glycine-dimethyl phosphite method to synthesize glyphosate. The main raw materials of this method are glycin...