A kind of artificial wetland-biofilm combined sewage treatment system and treatment process

Through the constructed wetland-biofilm combined sewage treatment system, combined with biological filler and sludge return technology, the problems of operation and maintenance and water output stability of rural domestic sewage treatment facilities have been solved, and efficient, low-cost sewage treatment and natural sludge digestion have been achieved.

CN112679040BActive Publication Date: 2025-01-21WUHAN ZIGUANG CONTROL TECH
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Patent Information

Application Number
CN202011476571.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-12-15
Publication Date
2025-01-21
Estimated Expiration
2040-12-15

AI Technical Summary

Technical Problem

Rural domestic sewage treatment facilities have problems in operation and maintenance and effluent stability, and there are fewer professionals in rural economic development and maintenance management, making it difficult to achieve efficient and low-cost sewage treatment.

Method used

Adopting a constructed wetland-biofilm combined sewage treatment system, through the connection of anaerobic tank, improved wetland, aerobic tank and sedimentation tank, combined with biological filler and sludge return technology, it can achieve both aerobic and aerobic treatment of sewage and improve denitrification Phosphorus removal effect, and the use of sludge return to provide nutrients for wetland plants.

Benefits of technology

It improves the efficiency of sewage treatment, reduces construction costs, realizes natural digestion of sludge, eliminates the need for residual sludge treatment, and ensures long-term stable and reliable operation of the system.

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Abstract

The present invention proposes an artificial wetland-biofilm combined sewage treatment system and treatment process, comprising an anaerobic tank, an improved wetland, an aerobic tank and a sedimentation tank connected in sequence, sewage enters the anaerobic tank through an inlet pipe, the sedimentation tank and the anaerobic tank are connected through a sludge return pipe, and the sedimentation tank is provided with a drain pipe. The present invention can improve the nitrogen removal and phosphorus removal effect by improving the anaerobic environment of the wetland, and can provide nutrients for the improved wetland plants through the sludge return after the aerobic stage, and eliminates the link of excess sludge treatment, thereby improving the sewage treatment efficiency and saving construction costs, which is in line with the characteristics of rural domestic sewage treatment.
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Citation Information

Patent Citations

  • Constructed wetland-biological membrane combined sewage treatment system

    CN215712417U