Biochemical sludge screen

By using cyclone separation and aeration anti-clogging technology in the biochemical sludge screener, the problem of low sludge separation efficiency in existing technologies has been solved, achieving efficient sedimentation and separation of heavy sludge and improving the treatment capacity of the biochemical tank.

CN122273157APending Publication Date: 2026-06-26HUNAN KESHENG WATER CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUNAN KESHENG WATER CO LTD
Filing Date
2026-05-19
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing inclined tube or inclined plate sedimentation tank technologies cannot effectively distinguish between heavy, highly active sludge and light sludge, resulting in a large amount of low-activity sludge mixed in with the return sludge, making it difficult to improve the concentration of microorganisms and treatment efficiency in the biological treatment tank.

Method used

A biochemical sludge screen is designed. By staggering the flow box and the sludge-blocking assembly, the sewage forms a swirling flow. The centrifugal force and collision action are used to separate heavy sludge. Combined with the aeration mechanism and stirring rod to prevent clogging, the settling and separation of heavy sludge are achieved.

Benefits of technology

It effectively separates heavy, highly active sludge from light sludge, increases the concentration of microorganisms in the biological treatment tank, enhances sludge treatment efficiency, prevents chute blockage, and ensures stable system operation.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses a biochemical sludge screener, relating to the field of sludge treatment technology. It includes a flow box with inlets and outlets on both sides for wastewater inflow and outflow. It also includes a sludge-blocking assembly, which consists of multiple sludge-blocking plates and a base plate. A groove is formed between adjacent sludge-blocking plates to guide the separated heavy sludge out. In this invention, the flow box and sludge-blocking assembly are staggered, ensuring that when wastewater flows tangentially into the flow box through the inlet, the heavy sludge remains at a lower position and has greater inertia. The heavy sludge particles first collide with the inner wall of the flow box, causing them to gradually settle. Then, the wastewater collides sequentially with the multiple sludge-blocking plates on the assembly, increasing the contact area with the heavy sludge. At this point, the water flow changes direction due to the collisions, while the heavy sludge, due to inertia, cannot change direction with the wastewater and is blocked and settled by the sludge-blocking plates.
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