Method for treating aquaculture wastewater of aquatic product by using immobilized algae cells

Abstract

The invention relates to a method for treating aquaculture wastewater of an aquatic product by using immobilized algae cells. The method comprises the following steps: firstly, culturing algae cells;secondly, preparing a fixing agent; thirdly, mixing the algae cells with the fixing agent and adding active materials; fourthly, immobilizing the algae cells to prepare algae balls; fifthly, preserving the prepared algae balls in a fluid medium; sixthly, introducing the algae balls bred in the fluid medium into the aquaculture wastewater of the aquatic product for carrying out wastewater treatment. According to the method disclosed by the invention, free algae cells are immobilized or embedded to form the algae balls which can be recovered in time, so that secondary pollution is avoided, the contents of total nitrogen and total phosphorus in an aquaculture water body of the aquatic product can be effectively reduced and the water quality is purified; meanwhile, the algae balls can be usedrepeatedly, so that the utilization is improved; in addition, the algae balls can be used as animal bait, or is processed into other downstream products by separating, and economic value is brought.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a method for treating aquatic product breeding wastewater with immobilized algae cells. Background technique [0002] With the improvement of people's living standards, the demand for aquatic products continues to increase, resulting in the rapid development of my country's aquaculture industry. Judging from the current situation of freshwater aquaculture, traditional high-density and intensive aquaculture will lead to excessive accumulation of feces and residual bait in the water body, exceeding the self-purification capacity of the water body, causing a serious imbalance in the water environment, and bringing total nitrogen and total phosphorus generally exceeding the standard , the eutrophication of the water body is serious; the harmful substances such as ammonia nitrogen and nitrite exceed the standard, which have a direct toxic effect on the fish body and increase the nu...

AI Technical Summary

Problems solved by technology

Judging from the current situation of freshwater aquaculture, traditional high-density and intensive aquaculture will lead to excessive accumulation of feces and residual bait in the water body, exceeding the self-purification capacity of the water body, causing a serious imbalance in the water environment, and bringing total nitrogen and total phosphorus generally exceeding the standard , the eutrophication of the water body is serious; the harmful substances such as ammonia nitrogen and nitrite exceed the standard, which have a direct poisonous effect on the fish body and increase the number of fish diseases

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