Freshwater aquaculture wastewater advanced treatment recycling system and method thereof

Abstract

The invention relates to a freshwater aquaculture wastewater advanced treatment recycling system and a method thereof and belongs to the technical field of environmental protection. The freshwater aquaculture wastewater advanced treatment recycling system comprises an aquaculture pond, a sand-sinking and water-collecting tank, a biological enhancement fluidized tank, biological stuffing and a secondary purifying pond, wherein the water outlet of the aquaculture pond is used for discharging freshwater aquaculture wastewater; the water inlet of the sand-sinking and water-collecting tank is connected with the water outlet of the aquaculture pond by virtue of a pipeline, and the water outlet of the sand-sinking and water-collecting tank is connected with the water inlet of the biological enhancement fluidized tank; the water outlet of the biological enhancement fluidized tank is connected with the water inlet of the secondary purifying pond by virtue of a pipeline; the biological stuffing is arranged in the biological enhancement fluidized tank; aquatic plants or landscape plants with strong pollution absorption capability or economical aquatic vegetables are planted in the secondary purifying pond; and the water outlet of the secondary purifying pond is connected with the water inlet of the aquaculture pond by virtue of a pipeline. The method provided by the invention is applicable to wastewater advanced treatment of various large-scale freshwater aquaculture models, a treatment process is simple and efficient, impact resistance is strong, purifying effect is good, equipment investment is small, automatic operation is realized, and operation cost is low.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to an advanced treatment and reuse system for freshwater aquaculture wastewater and a method thereof. Background technique [0002] Since the reform and opening up, the layout of the freshwater aquaculture industry has undergone major changes, and it has gradually become one of the main growth points of my country's current rural economy. In recent years, the industrial aquaculture industry has developed rapidly. Compared with traditional farming methods, high-density intensive farming requires relatively less land and has a short cycle, which has great economic advantages. However, the problem of wastewater discharge brought about by the vigorous development of aquaculture industry has become an increasingly serious environmental pollution, which not only endangers ecological safety, but also restricts economic development, which has become a social pro...

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Problems solved by technology

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