Treatment method and devices for aquaculture sewage discharge

Abstract

The invention discloses a treatment method for aquaculture sewage discharge. The treatment method comprises the following steps: step A, carrying out primary purification on aquaculture sewage discharged from the bottom of an aquaculture pond through a precipitation filtration device for removing suspended particles, excrement and other dirt which are not dissolved in water; step B, carrying out purification on the aquaculture sewage through a purification device for removing harmful substances such as ammonia nitrogen, nitrites, heavy metals, antibiotics and the like in the water, and carrying out sterilizing; and step C, enabling the aquaculture sewage to pass through a reduction device for removing fine impurities, flocculent precipitates formed by colloidal proteins, excess cations andstrong oxides in the water, and directly discharging the aquaculture sewage subjected to purification and reduction treatment into a natural water body through a water outlet. According to the treatment method provided by the invention, the aquaculture sewage can be rapidly purified and reduced, germs and viruses in the water body can be killed, the content of the ammonia nitrogen and the nitrites is reduced, harmful substances in the water body can be removed, and the treated water can be directly discharged into the natural water body.

Description

technical field [0001] The invention relates to the field of treatment of aquaculture sewage discharge, and is especially suitable for aquaculture sewage of various freshwater, brackish water and seawater organisms, freshwater and seawater aquaculture sewage, freshwater and seawater ornamental biological aquaculture sewage, seafood and freshwater temporary cultivation, seafood and river freshwater transportation sewage discharge treatment. Background technique [0002] At present, the breeding method has developed from the previous extensive and semi-intensive farming models to intensive farming and industrial farming models. However, due to the one-sided pursuit of economic benefits, the breeding area is increasing, the breeding density is increasing, and the breeding species is too single, making aquatic products The balance of the natural ecological system in the aquaculture water body is broken, the self-pollution is serious, and a large amount of aquaculture sewage is p...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the deficiency of the existing treatment technology for aquaculture sewage discharge, the present invention provides a treatment method and equipment for aquaculture sewage discharge, which can not only kill bacteria, viruses and parasites in water, but also reduce ammonia nitrogen and nitrite Concentration, removal of soluble organic matter, antibiotics, heavy metals and other harmful substances in the water, and reduction treatment of the water body, so that the treated water is similar to a pollution-free natural water body; the equipment adopts a modular design with simple structure, fast processing speed, high efficiency, Low energy consumption, easy operation, and precise fine-tuning according to different water quality and treatment standards in various places

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