A device for solving sludge bulking

The centrifugal separation technology using a sieving device solves the problem of sludge expansion at low temperatures, achieving rapid sludge separation and improved settling properties. It is applicable to all biochemical processes and avoids the drawbacks of reagent addition and changes in operating conditions.

CN224450512UActive Publication Date: 2026-07-03BEIJING CHUANGCHUANG CHINA-DUTCH TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202520530692.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-25
Publication Date
2026-07-03
Estimated Expiration
2035-03-25

AI Technical Summary

Technical Problem

Existing technologies are difficult to effectively solve the problem of sludge bulking under low-temperature conditions, and there are many defects in the addition of reagents and changes in operating conditions, which affect the normal operation of sewage treatment plants.

Method used

A screening device is used to separate sludge into high-quality and low-quality sludge through the centrifugal force of an impeller, achieving rapid separation without relying on the addition of chemicals or changes in operating conditions.

Benefits of technology

It effectively improves sludge settling properties, reduces filamentous bacteria content, increases sludge particle size, solves sludge bulking problems, is suitable for all biochemical processes, and does not affect the stable operation of the system.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to a device for solving sludge bulking, comprising a cylindrical screening chamber, a conical screening chamber, an impeller, a motor, a bell-shaped inlet, and a bushing. The motor is located on the outer front end of the cylindrical screening chamber. An inlet is located at the top of the cylindrical screening chamber, and the rear end is connected to the conical screening chamber. An impeller is located at the inner end of the cylindrical screening chamber, and the motor shaft is connected to the impeller. The bell-shaped inlet is located at the front end of the impeller, and the narrow end of the bell-shaped inlet is connected to the bushing. The bushing passes through the cylindrical screening chamber, and an overflow port is provided on the bushing on the outer side of the cylindrical screening chamber. Under the centrifugal force of the impeller, high-quality sludge enters the conical screening chamber, while low-quality sludge enters the bell-shaped inlet. This device does not rely on the addition of chemicals, nor does it require changes to the operating conditions of the biological treatment tank. The obtained high-quality sludge has a large particle size, low filamentous bacteria content, and good settling performance, thus avoiding sludge bulking and solving the sludge bulking problem caused by low-quality sludge.
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