A method for the discharge of triazone pesticide wastewater up to the standard and coordinated with the treatment of salt resources

Abstract

The invention discloses a triazone pesticide wastewater up-to-standard emission synergistic salt recycling treatment method and belongs to the technical field of pesticide wastewater treatment. The method comprises the following steps: separately collecting and treating wastewater of a triazone pesticide preparation process, performing combined treatment of microelectrolysis-Fenton oxidation-neutralization and sedimentation treatment and UASB (Upflow Anaerobic Sludge Blanket) and aerobiotic activity sludge on wastewater of an intermittent dichloropinacolin production section, performing resinadsorption treatment on wastewater of a triazone production section, recycling sodium chloride, finally combining effluents of the two modes, and accessing to a garden tube network for garden management. By adopting the triazone pesticide wastewater up-to-standard emission synergistic salt recycling treatment method disclosed by the invention, efficient and stable treatment on high-salt, high-COD(Chemical Oxygen Demand) and biorefractory wastewater is achieved, and the purpose of up-to-standard emission of triazone pesticide wastewater is achieved; the method is simple and convenient to operate and has the advantages of high efficiency, low consumption, high stability, convenience of maintenance, and the like, and sodium chloride in the wastewater can be recycled and reused.

Description

technical field [0001] The invention belongs to the field of pesticide wastewater treatment technology, and in particular relates to a method for the discharge of triazinone pesticide wastewater up to the standard and cooperative salt resource treatment. Background technique [0002] Triazone compounds are a class of nitrogen-containing heterocyclic compounds with potential biological activity, wherein triazone (chemical name 6-tert-butyl-4-amino-3-mercapto-1,2,4-triazine-5 (4H)-ketone) is an important intermediate for the synthesis of the herbicide mecinazone. It mainly synthesizes the intermediate of dichloropinatone through the chlorination of pinazone. The intermediate of dichloropinatone undergoes hydrolysis, oxidation, and cyclization. The synthesis of triazone will produce a large amount of high-COD, high-salt, and biologically toxic wastewater during its production process. The wastewater produced by the intermediate dichloropinazone production section is mainly poll...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem that the comprehensive degradation rate of triazinone pesticide wastewater treatment is not high in the prior art, the present invention provides a method for triazinone pesticide wastewater to be discharged up to the standard and coordinated with salt resource treatment, which realizes the treatment of triazone pesticide wastewater up to the standard, At the same time, the refined industrial sodium chloride is recovered, which reduces the treatment cost of triazinone pesticide wastewater

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