A system for treating fecal sewage and a process for treating fecal sewage

By optimizing the pretreatment process of the manure treatment system and utilizing the sewage suction device and the filter components of the solid-liquid separator to improve the mechanism, the problem of slag removal in old pig farms has been solved, reducing treatment costs and operating load. It is suitable for both new and old pig farms.

CN116139575BActive Publication Date: 2026-06-23CHONGQING ACAD OF ANIMAL SCI +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHONGQING ACAD OF ANIMAL SCI
Filing Date
2022-11-17
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

In existing manure treatment technologies, the importance of the pretreatment process is overlooked, resulting in high operating loads in the posttreatment process and difficulty in cleaning the debris at the grid interception points. This is especially true in older pig farms where the cost of technical upgrades is high and cleaning is difficult.

Method used

The system employs a wastewater suction device and a solid-liquid separator. The filter assembly moves up and down along the outer wall of the filter frame via a lifting mechanism and guide rails. The diameter of the filter holes is no more than 3mm. Combined with the post-treatment system, which includes sedimentation, anaerobic, facultative, and aerobic tanks, the pre-treatment process is optimized.

Benefits of technology

It reduces the cost of manure treatment to 6-7 yuan/ton, alleviates the operational load of post-processing procedures, simplifies the slag cleaning process, and takes only 10-20 minutes. It is suitable for both old and newly built pig farms and is easy to replace and maintain.

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    Figure CN116139575B_ABST
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Abstract

The present application provides a kind of excrement sewage treatment system and excrement treatment process, including pretreatment system and post-processing system, pretreatment system includes sewage suction device and solid-liquid separator, sewage suction device includes suction pump, suction pump is arranged in filter frame, at least in the outer lateral wall of filter frame is provided with filter assembly, filter assembly is connected to lifting mechanism, lifting mechanism can lift filter assembly to specified height;In stationary state, filter assembly is attached to the lateral wall of filter frame;During the lifting of filter assembly, filter assembly is attached to the outer lateral wall of filter frame and moves;Excrement treatment process includes precipitation, stationary, anaerobic, facultative, aerobic, stationary treatment process.Using the scheme of the present application, not only can the operating load in the post-processing process be reduced, but also the problem of difficult cleaning of the intercepted residue can be solved, and the cleaning efficiency of the intercepted residue can be greatly improved, and the cost of excrement treatment can be greatly reduced.
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