Culture wastewater purification treatment system and process

Abstract

The invention discloses a culture wastewater purification treatment system and process. The treatment system comprises an ecological treatment pond, a protein separator and a microbial nitrogen and phosphorus removal filter which are sequentially connected in the flow direction of wastewater. In the treatment process, after the culture wastewater in a culture pond is sequentially treated by the ecological treatment pond and the protein separator, circulating wastewater is introduced into a treatment container with anaerobic and anoxic microorganisms and aerobic microorganisms, and phosphorus in the circulating wastewater is subjected to denitrification reaction through the anaerobic and anoxic microorganisms; aerobic microorganisms are used for carrying out nitration reaction on ammonia nitrogen and nitrite in the circulating wastewater. According to the culture wastewater purification treatment system and process provided by the invention, ammonia nitrogen, nitrite, phosphorus and other substances in the wastewater are completely treated, and the treated water can be reused as culture water, so that water resources are saved.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a system and process for purifying and treating aquaculture wastewater. Background technique [0002] For more than 40 years, my country's aquaculture industry has entered a period of rapid development. With it comes a large amount of aquaculture waste, such as livestock and poultry and wastewater from aquaculture. Aquaculture wastewater is mainly autologous wastewater, which contains a large amount of ammonia nitrogen, bacteria, dissolved organic matter, undigested feed, etc., and the discharge is huge. In order to improve economic benefits, some farmers lead to the random discharge of aquaculture wastewater, which has a serious impact on the environment and also harms aquatic products. At present, the vast majority of aquaculture wastewater is directly discharged into the environment, and there is a lack of efficient and low-cost purification technology. [0003] Traditio...

AI Technical Summary

Problems solved by technology

However, the denitrification process of wastewater must rely on the two processes of nitrification and denitrification. Aerobic microorganisms can only perform nitrification and cannot achieve the denitrification function. The treatment of ammonia nitrogen, nitrite and other substances in aquaculture wastewater is not complete. After the nitrogen content of the water body does not drop significantly, the water body cannot be recycled

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