Domestic mini sewage treatment system and sewage treatment method

By combining a septic tank, a contact oxidation zone, an electrocoagulation zone, and a filtration zone, the household micro-sewage treatment system solves the problems of high efficiency, low cost, and environmental protection in rural sewage treatment, and realizes multiple utilization pathways and automated control of purified water.

CN116947247BActive Publication Date: 2026-01-02CHENGDU FILTRASCALE TECH
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Patent Information

Application Number
CN202310936447.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-07-27
Publication Date
2026-01-02
Estimated Expiration
2043-07-27

AI Technical Summary

Technical Problem

Rural sewage treatment lacks effective means, and existing technologies are insufficient to achieve efficient and low-cost sewage treatment. Furthermore, chemical treatment processes may lead to secondary environmental pollution.

Method used

The system employs a household micro-sewage treatment system, including a septic tank, a contact oxidation zone, an electrocoagulation zone, a filtration zone, and an effluent zone. Combined with suspended media and an aeration system, it treats sewage through microbial degradation and electrocoagulation to produce purified water for crop irrigation or landscape aquaculture.

Benefits of technology

It achieves efficient treatment of rural sewage, reduces land occupation and construction costs, lowers the risk of chemical pollution to the environment, provides multiple ways to utilize purified water, and has a compact system structure that is easy to arrange and has automated control functions.

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Abstract

The present application relates to the field of sewage purification, and discloses a household micro sewage treatment system and a sewage treatment method, which comprises the following steps: building a septic tank; preparing a household micro sewage treatment system, an aeration system and suspended filler for microbial attachment; pumping clarified liquid by a lifting pump, and the clarified liquid enters a contact oxidation zone, and microorganisms degrade COD and BOD in the clarified liquid; the clarified liquid at the contact oxidation zone flows into an electrocoagulation zone, and electrocatalytic flocculation is performed; then, pollutants and phosphorus in the clarified liquid are filtered by a filtering zone, and the clarified liquid forms purified water; the purified water is taken from a water outlet zone, and is used for crop irrigation; or, a landscape zone for breeding aquatic plants or plankton is arranged at the water outlet zone. In the present application, the contact oxidation zone, the electrocoagulation zone, the filtering zone and the water outlet zone are sequentially and continuously arranged from bottom to top, and the arrangement structure of the whole household micro sewage treatment system is compact, and it is more convenient to arrange the system in a separate house environment in rural areas.
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