A wastewater treatment device and its treatment method

By using a dual-grid rotating alternating system, the problem of easy clogging of traditional single-grid systems is solved, enabling efficient and continuous operation of the wastewater treatment device and improving the impurity filtration effect.

CN122127012APending Publication Date: 2026-06-02ZHUHAI LIXIN ENVIRONMENTAL PROTECTION CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHUHAI LIXIN ENVIRONMENTAL PROTECTION CO LTD
Filing Date
2026-04-08
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Traditional single-screen designs are prone to clogging, requiring frequent shutdowns for cleaning. They also cannot adapt to changes in water quality in real time, affecting the continuity and efficiency of treatment.

Method used

The system employs a dual-grid rotating alternating system, which uses a combination of two grids and a rotating rod to drive the rapid switching between the interception point and the replacement point grids. The automatic switching of the power transmission path is achieved by the cooperation of ratchet and toothed ring, avoiding downtime for cleaning.

Benefits of technology

It enables efficient and continuous operation of the sewage treatment device, improves treatment efficiency, avoids the problem of shutdown and cleaning when the traditional single screen is clogged, and improves the impurity filtration effect.

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Abstract

This invention discloses a wastewater treatment device and method, relating to the technical field of wastewater treatment. The device includes a pretreatment unit, a biological treatment unit, and a deep treatment unit connected in sequence. The pretreatment unit comprises a screen, an equalization tank, a coagulation sedimentation tank, and a reaction tower. A screen is installed in a flow channel for leachate collection. One end of the flow channel is connected to the equalization tank. Two screens are installed, one at the interception point and the other at the replacement point within the flow channel. The two screens rotate alternately and are symmetrically arranged via a second ratchet mechanism. The second ratchet mechanism is driven by a rotating rod gear. The two ends of the rotating rod are eccentrically positioned within an outer rotating gear ring. This innovative design of alternating rotation of the two screens achieves efficient and continuous operation. The combined structure of the two screens and the rotating rod drive enable rapid switching between the interception point and the replacement point screens, avoiding the need for shutdown and cleaning when a traditional single screen becomes clogged, thus significantly improving treatment efficiency.
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