Eel culture tail water treatment method and system

Abstract

The invention discloses an eel breeding tail water treatment method and system. The method comprises the steps that firstly, tail water is extracted into a residual feed and excrement collecting pond, particulate matter harmless separation and collection are conducted, and finally resource utilization is conducted; then, the tail water obtained after particulate matter separation is drained into a flocculate collecting pool, a flocculating agent is sprayed, floccules are formed, and the floccules are solidified and collected; and finally, the tail water after collecting the flocculate is discharged into a biological purification tank for biological purification until the tail water reaches the discharge standard. The system comprises a residual feed and excrement collecting pond, a fine particulate matter separating and collecting device, a flocculate collecting pond, a solid-liquid separating tank and a biological purifying pond. Through the method or the system, the treated tail water can be discharged in a standard reaching manner, the green development concept of the breeding industry is met, and the technology is not limited to eel breeding tail water treatment and can be widely applied to other aquatic product breeding tail water treatment and urban river and lake treatment.

Description

technical field [0001] The invention relates to the technical field of eel culture tail water purification, in particular to a treatment method and system for eel culture tail water. Background technique [0002] Eels grow in the natural water environment of natural sea areas. Humans catch eels and concentrate them in indoor greenhouses for high-density breeding. Because eels in aquaculture species have relatively high demand for calcium and phosphorus, farmers add calcium and phosphorus elements to the feed. The test of the breeding water body calculated that the phosphorus content in the eel feed should be greater than 0.8mg / L. After high-density feeding, a large amount of eel excrement quickly pollutes the aquaculture water body. The nitrogen and phosphorus substances in the feces of the residual bait seriously affect the growth of eels and cause the breeding of bacterial diseases. In order to imitate the natural growth environment of seawater eels, farmers can only chan...

AI Technical Summary

Problems solved by technology

After high-density feeding, a large amount of eel excrement quickly pollutes the aquaculture water body, and the nitrogen and phosphorus substances in the aquaculture residual bait feces seriously affect the growth of eels, causing bacterial diseases to breed

In order to imitate the natural growth environment of seawater eels, farmers can only change water regularly and quantitatively to dilute and increase oxygen, and discharge eel residue bait and feces, which will cause damage to the ecological environment

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