Preparation method and application of immobilized agent bag of efficient denitrifier

Abstract

The invention relates to a preparation method and application of an immobilized agent bag of an efficient denitrifier. The preparation method of the agent bag comprises the steps of screening out efficient heterotrophic nitrification and aerobic denitrification bacteria at first, and then carrying out salt-tolerant domestication on the efficient heterotrophic nitrification and aerobic denitrification bacteria to obtain salt-tolerant heterotrophic nitrification and aerobic denitrification bacteria; adsorbing the immobilized salt-tolerant heterotrophic nitrification and aerobic denitrification bacteria by using modified zeolite to obtain immobilized salt-tolerant heterotrophic nitrification and aerobic denitrification bacteria zeolite; and then flatly laying the obtain immobilized salt-tolerant heterotrophic nitrification and aerobic denitrification bacteria zeolite in a cloth bag to obtain the final product. The bacterial density of zeolite particles in the cloth bag is 1* 109-5* 109 CFU / mL. The prepared immobilized agent bag is widely used in shallow sea aquatic farms and aquaculture ponds, and efficient removal in a high-salinity environment is realized; and moreover, the agent bag can be reused, the cost is greatly reduced, the shortcoming that free microbial flora which are directly used easily flow along with tides of seawater, cannot accurately position bacteria and cannotbe in full contact with the bacteria is overcome effectively, threatening to the quality of aquaculture products due to introduction of alien microbes is also avoided, ecological safety of water of aseawater aquaculture region is protected, and the immobilized agent bag is expected to be widely used.

Description

technical field [0001] The invention belongs to water pollution control technology, and in particular relates to a preparation method and application of an immobilization of high-efficiency denitrification bacteria and a bacterial agent package. Background technique [0002] The rapid development of my country's mariculture industry has played an important role in meeting people's demand for seafood. However, during the production process, a large amount of pollutants produced by mariculture areas and farms directly enter the marine environment, and long-term accumulation leads to deterioration of water quality and imbalance of the marine ecosystem. Nitrogen source pollution in the process of aquaculture mainly comes from artificial baiting, animal manure, residual bait, and dead animals and plants, and exists in the form of nitrate nitrogen and ammonia nitrogen. Its existence can destroy the gill tissue of fish, induce gill rot, inhibit the oxygen-carrying capacity of the ...

AI Technical Summary

Problems solved by technology

[0009] Yet another object of the present invention is to overcome the many shortcomings of the existing direct use of free microbial bacterial agents that diffuse with water flow during use, large amount of bacterial agents used, high cost, low utilization efficiency, and inability to recycle.