Flocculating agent for pesticide missible oil preparation machine cleaning wastewater and application thereof

Through the synergistic effect of composite flocculants, the problems of poor demulsification effect and low COD removal rate of cleaning wastewater from pesticide emulsifiable concentrate formulations have been solved, achieving efficient and economical wastewater treatment. It is applicable to cleaning wastewater from various pesticide emulsifiable concentrate formulations.

CN121850164APending Publication Date: 2026-04-14SHANDONG WEIFANG RAINBOW CHEMICAL CO LTD
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Patent Information

Application Number
CN202511998441.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-29
Publication Date
2026-04-14

AI Technical Summary

Technical Problem

Existing flocculants have poor demulsification effect, low COD removal rate, large flocculant dosage and large sludge production when treating wastewater from pesticide emulsifiable concentrate cleaning machines, making it difficult to effectively treat high-concentration and highly stable emulsified wastewater.

Method used

A composite flocculant is used, consisting of polyaluminum chloride, polyferric sulfate, cationic polyacrylamide, chitosan quaternary ammonium salt, modified diatomaceous earth, and polydiallyldimethylammonium chloride. Through synergistic action, it disrupts the stability of the oil-water interface and, combined with a pH adjuster, achieves efficient demulsification and COD removal.

Benefits of technology

It achieves high efficiency in demulsification and COD removal, requires less flocculant, has a short treatment time, and exhibits good floc stability. It is suitable for cleaning wastewater from various types of pesticide emulsifiable concentrate formulations and is cost-effective.

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Abstract

The invention discloses a flocculating agent for machine cleaning wastewater of a pesticide missible oil preparation and application of the flocculating agent. The flocculating agent is prepared from the following components in parts by weight: 50-60 parts of an inorganic flocculating agent, 35-45 parts of an organic flocculating agent, 8-12 parts of a demulsification aid and 4-6 parts of a pH regulator. The flocculant disclosed by the invention is good in demulsification effect, high in COD removal rate, high in treatment efficiency, strong in floc stability, economical in cost and wide in wastewater adaptability, and solves the problems of poor demulsification effect, low COD removal rate, large flocculant dosage and the like when an existing flocculant is used for treating pesticide missible oil preparation cleaning wastewater.
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