Treatment method of aquaculture water body

Abstract

The invention discloses a treatment method of aquaculture water body. A chemical method and a biological method are combined to treat the water body according to the inorganic nitrogen content of thewater body, when the inorganic nitrogen concentration is less than 25 mmol / L, non-oxygen-producing photosynthetic bacteria are directly put into the water body for treatment in several times, so thatthe concentration of the non-oxygen-producing photosynthetic bacteria is larger than 2.5 CFU / m<3>; and if the concentration of the inorganic nitrogen in the aquaculture water body is larger than 25 mmol / L, firstly part of the inorganic nitrogen is precipitated by a chemical precipitation method, then the non-oxygen-producing photosynthetic bacteria are put into the water body, the aquaculture water body can be effectively purified, and the survival rate of aquatic products is increased.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a treatment method for aquaculture water bodies. Background technique [0002] In the process of aquaculture, a large number of feeds, fertilizers, etc. are fed, resulting in a sharp increase in the content of nitrogen and phosphorus in the water, especially the increase in the content of ammonia nitrogen and nitrous nitrogen, which leads to the deterioration of water quality and the aggravation of eutrophication of the water body, which eventually leads to aggravation of diseases year by year. Micro-ecological imbalance. Aquaculture water pollution is mainly divided into two aspects, namely self-pollution and external environment pollution, among which self-pollution is the main source of aquaculture water pollution. [0003] Microbial remediation is to use the metabolism of microorganisms to remove nitrogen-containing pollutants in aquaculture water, and to inhibit a...

AI Technical Summary

Problems solved by technology

Aquaculture water bodies have different substrates and initial concentrations of inorganic nitrogen in the water, and the bacterial strains have different removal effects on inorganic nitrogen. It is reported that when the concentration of inorganic nitrogen in the water is 2 mg / L to 14 mg / L, The effect of microbial nitrogen removal is high, up to more than 90%. The concentration of inorganic nitrogen further increases, and the removal rate drops significantly. For example, when the concentration of ammonia nitrogen reaches 21 mg / L, the removal rate is less than 30%, and the utilization rate of microorganisms is greatly reduced.