Aquaculture pond tail water treatment and cyclic utilization system and method

Abstract

The invention discloses an aquaculture pond tail water treatment and cyclic utilization system and method. The system comprises a drainage sand well, a sedimentation tank, a biological treatment tankand a chemical treatment tank. The drainage sand well comprises a culture tail water discharge control device, a substandard tail water discharge control device, a standard tail water discharge control device and a precipitate collection control device; the sedimentation tank comprises a sedimentation tank tail water inlet, a sedimentation tank tail water outlet, a sediment discharge control device, a sedimentation tank water separation wall and a particle sediment sedimentation area; the biological treatment tank comprises a biological treatment tank tail water inlet device, a biological treatment tank tail water discharge device, a precipitate discharge control device, a biological treatment tank water separation wall and a particle precipitate deposition area; and the chemical treatmenttank comprises a chemical treatment tank tail water inlet, a recyclable tail water discharge control device, a tail water discharge control device and a fountain type aerator. Three treatment means of physics, chemistry and biology are fused, the organic waste is turned into wealth, resource recycling is achieved, and high ecological benefits are achieved.

Description

technical field [0001] The invention relates to a treatment and recycling system and method for aquaculture tail water. Background technique [0002] In recent years, the demand for aquatic products in my country has increased year by year, and the scale of aquaculture has also gradually expanded. However, the traditional aquaculture model of large-scale discharge and large-scale release still dominates, and the discharge of aquaculture tail water is increasing year by year. The concentration of inorganic phosphorus increased significantly, inorganic nitrogen generally exceeded the standard, and the ecological environment of water areas continued to deteriorate. Therefore, the treatment and reuse of aquaculture tail water has become a key link in the study of sustainable development of aquaculture. At present, a large number of technical research and applications have been carried out in the field of aquaculture tail water treatment at home and abroad, which can be mainly di...

AI Technical Summary

Problems solved by technology

The treatment effect of pond purification is affected by the filter packing, which needs to be cleaned and replaced regularly, which consumes a lot of manpower and material resources; the facility purification technology has higher content, and has the characteristics of obvious treatment effect and small footprint. The disadvantage is that the cost is high. There are few applications in actual production; in contrast, artificial wetlands have good treatment effects, low cost, low energy consumption, and good ecological benefits. The purification effect is related to wetland type, filler thickness, filler type, plant type, and plant quantity. , the decontamination capacity is limited, and there will be overload operation when dealing with a large amount of aquaculture tail water, the treatment effect is difficult to guarantee, and it is greatly affected by the climate, so it needs to be adapted to local conditions

[0004] Although the current aquaculture tail water treatment technology research has made great progress, in the current aquaculture production practice, many farmers and production companies often only focus on economic benefits, weak awareness of environmental protection, and lack a complete set of tail water treatment facility

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