Process for the preparation of a sludge dewatering agent

CN122102475APending Publication Date: 2026-05-29NANJING KAICHUANG SYNERGY NANOTECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING KAICHUANG SYNERGY NANOTECHNOLOGY CO LTD
Filing Date
2024-11-27
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing sludge dewatering agents may leave harmful residues, require specialized equipment for operation, and are costly to use, thus limiting the further utilization of sludge.

Method used

Using vermiculite as raw material, a sludge dewatering agent is prepared through steps such as mixing with a weak acid solution, calcination, adding quicklime, alum, carbon powder and surface modifier. This avoids the use of ferric chloride, adds carbon powder for physical adsorption, reduces treatment costs, and adds cell wall disruptors and degreasing agents to improve dewatering performance.

Benefits of technology

The preparation process is simple and suitable for large-scale industrial production. It reduces processing costs and improves the calorific value and dehydration efficiency of the mud cake. It is suitable for secondary recycling such as incineration, co-firing for power generation, and composting.

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Abstract

The application provides a preparation method of a sludge dewatering agent, which is low in production cost and free of volatility, and the preparation process is simple, so that the method is suitable for large-scale industrial production; in addition, ferric chloride is not used in the application, so that corrosion of the ferric chloride to equipment is avoided; meanwhile, carbon powder is added, so that the treatment cost is reduced, the calorific value of the finished product mud cake is increased, and the final disposal and utilization of the mud cake are facilitated, such as incineration, mixed combustion for power generation and composting, and the like, and the effect of secondary recovery and recycling is good.
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