Combined treatment system for cultivation sewage and method thereof

Abstract

The invention discloses a combined treatment system for cultivation sewage and a method thereof. The combined treatment system comprises an animal house, a pretreatment unit, a solid-liquid separation unit, a solid treatment unit and a liquid treatment unit and is characterized in that the animal house is connected with the pretreatment unit through a pipeline, the pretreatment unit is connected with the solid-liquid separation unit, and the solid-liquid separation unit is respectively connected with the solid treatment unit and the liquid treatment unit. The combined treatment system can guarantee continuous and stable work; as equipment of the combined treatment system has reasonable structural design, the equipment self has very strong self-cleaning capability in work, a blocking phenomenon is avoided, ordinary maintenance load is very small, and the combined treatment system is suitable for pretreating cultivation sewage; water-tolerant plants with developed root systems are planted on an aerobic constructed wetland, the developed root systems of the plants can extend into wetland substrates to form a system having good water permeability with the substrates, proceeding of a nitration effect in the substrates is promoted, and nitrous oxide generated by the nitration effect is small.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a combined treatment system and method for aquaculture sewage. Background technique [0002] In recent years, the livestock and poultry breeding industry has developed rapidly, and the intensive and large-scale breeding mode has made the pollution of livestock and poultry breeding a problem that cannot be ignored. Although my country's intensive aquaculture industry started late, it has developed rapidly and has reached a considerable scale in a relatively short period of time, and has a high-speed development trend. The large amount of excrement and aquaculture wastewater discharged has become a new source of pollution in many cities and rural areas. It is imperative to develop and utilize economical and efficient aquaculture wastewater treatment technology to prevent and control water pollution; the amount of aquaculture wastewater discharged by large-scale farms every day is la...

AI Technical Summary

Problems solved by technology

Physical and chemical methods have the advantages of good effect and simple treatment of aquaculture wastewater, but if an additional coagulant is added, it will increase the cost and cause secondary pollution.

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