Rapid membrane forming technology for low surface energy material filter materials

Abstract

The invention relates to a rapid membrane forming technology for low surface energy material filter materials of factory-like circulating aquaculture organisms, and belongs to the field of aquaculture. According to the method, the formation of a biological filter material surface biological membrane can be effectively promoted through the steps of the preparation of a mixed nutrient solution, thesurface spraying and curing treatment of a biological filter material, the incubation membrane formation of the biological filter material and the like. According to the method, the low surface energymaterial filter materials such as plastic rings, plastic balls and polyethylene fiber filament hairbrushes are used, the formation of the biological filter material surface biological membrane can beeffectively promoted, rapid membrane formation under production conditions can be realized, the maturing time of the biological membrane is shortened from 40 to 50 days in natural membrane formationto 15 to 20 days, and the starting of a biological filter chamber is quickened.

Description

technical field [0001] The invention relates to a method for fast film-hanging of biological filter material for industrial circulating aquaculture, in particular to a method for fast film-hanging of biological low-surface-energy material filter material for industrial circulating aquaculture, belonging to the field of aquaculture. Background technique [0002] Aquaculture industrialized recirculating aquaculture has the advantages of saving land resources, water resources and human resources, high production efficiency and ecological environmental protection, and plays a huge role in the scientific and technological progress and industrial upgrading of my country's aquaculture industry. The aquatic products of factory farming are more and more favored by consumers due to their ecological, environmental protection and health characteristics, showing their broad market prospects and good economic and ecological values. Factory aquaculture is an inevitable trend in the future ...

AI Technical Summary

Problems solved by technology

[0005] Moreover, there are currently few studies on the rapid film-coating of biological filter materials in industrial circulating aquaculture. The existing technologies all adopt a relatively simple method for film-coating of filter materials, that is, directly put the filter materials into biofilters for natural film-coating.

[0006] In industrial circulating aquaculture production, the biofilm on the surface of the filter material of the biofilter mostly adopts the natural film-hanging method, that is, the filter material is directly put into the biological treatment tank, and the bacteria, algae and other micro-organisms naturally present in the seawater of the biofilter tank are passed through. The degradation and utilization of the residual bait and feces of farmed animals makes a variety of micro-organisms form biofilms on the surface of the filter material, but the maturation speed of biofilms in this way is slow, the start-up time of the biological purification system is long, and the water quality in the initial stage of breeding is very easy to deteriorate. The ammonia nitrogen level in the biofilter will reach more than 5 mg / L at the initial stage of breeding, causing the animals to stop growing or even die. Solve the technology of rapid biofilm formation

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