Biological membrane quick-constructing method used in seawater factory breeding cycle water purification system

Abstract

The invention relates to a biological membrane quick-constructing method used in a seawater factory breeding cycle water purification system. The biological membrane is composed of SZ colloidal composites and combination purification bacteria, wherein the SZ colloidal composites are prepared by mixing yellow clay with zeolite powder; the combination purification bacteria is composed of four strains of low temperature resistant water purification bacteria, including bacillus subtilis, bacillus amyloliquefaciens and the like; and the biological membrane with a stable structure can be constructed by splashing the SZ colloidal composites and the combination purification bacteria together into a biological tank containing biological carriers and then ventilating for 4-5d to form the membrane. After testing, the biological membrane has good water purification effect on breeding waste water. The removal rate on ammonia nitrogen, nitrate, nitrite and COD (Chemical Oxygen Demand) in water body after passing the biological purification tank can respectively reach 23%, 72.6%, 73% and 78.3%. The biological membrane quick-constructing method has the advantages of simple method, short constructing period and good water quality purification effect, and is suitable for constructing biological filtering tanks in large-scale seawater factory breeding cycle water systems.

Description

Technical field: [0001] The invention belongs to the technology of quickly constructing biofilm in the circulating water purification system of seawater industrialized aquaculture, and is a method for quickly constructing biofilm in the purification system of seawater industrialized aquaculture for circulating water purification. Background technique: [0002] In recent years, with the improvement of aquaculture technology, my country's marine aquaculture industry has developed rapidly, and a multi-species, multi-form, and multi-industrial belt development situation has emerged, resulting in huge economic and social benefits. At present, there are mainly three types of marine aquaculture, static water aquaculture, flowing water aquaculture and recirculating aquaculture. Hydrostatic aquaculture is suitable for pond aquaculture, which has a large area and a relatively small daily water change; flowing water aquaculture is suitable for small water bodies, such as small intensiv...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a technical method capable of quickly constructing biofilms in seawater industrialized r