Energy-saving and environment-friendly treatment method for sewage generated by spinning electrostatic deoiling device

By adjusting the pH value in stages and adding flocculant in batches, the sewage treatment generated by the spinning electrostatic oil removal device is optimized, which solves the high cost and hazardous waste problems and achieves efficient, economical and environmentally friendly sewage treatment effects.

CN120483469AInactive Publication Date: 2025-08-15ZHEJIANG SANWEI MATERIAL TECH CO LTD
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Patent Information

Application Number
CN202510986877.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-17
Publication Date
2025-08-15
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

During the spinning production process, the oil-containing wastewater generated by the spinning electrostatic oil removal device will corrode the pipeline network and cause damage to the water ecosystem without effective treatment. The existing treatment technology is high and the amount of sludge hazardous waste is generated, making it difficult to meet strict emission standards.

Method used

By adjusting the pH value in stages and adding different flocculants in batches and controlling the stirring speed, the sewage treatment process is optimized, including the use of polymer aluminum chloride and polyacrylamide flocculants, combined with the stirring speed adjustment, to form efficient floc precipitation.

Benefits of technology

It significantly improves the pollutant removal rate, reduces the amount of flocculant and treatment costs, reduces the generation of hazardous waste, and achieves efficient, economical and environmentally friendly sewage treatment.

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Abstract

The invention relates to the technical field of sewage treatment, and discloses an energy-saving and environment-friendly treatment method for sewage generated by a spinning electrostatic deoiling device. The method comprises the following steps: performing oil separation pretreatment on the oily agent wastewater, and treating in a pH adjusting tank in two stages: in the first stage, adjusting the pH value to 9-10, and adding polyaluminum chloride while quickly stirring; and in the second stage, the pH is further adjusted to 11-12, polyacrylamide is added with slow stirring, and finally, standing, precipitation and separation are performed. According to the method, the pollutant removal efficiency is remarkably improved and the COD (Chemical Oxygen Demand) removal rate is high by accurately regulating and controlling the pH value, adding the flocculating agent in batches and controlling the stirring speed. Meanwhile, compared with a traditional process, consumption of a large amount of acid and alkali is avoided, generation of hazardous waste such as sludge is reduced, the dosage of a flocculating agent and the treatment cost are reduced, and the efficient, economical and environment-friendly sewage treatment target is achieved.
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