硝化细菌净化养殖水体中氨氮实验

摘要

The main factors of water pollution in aquaculture are NH3/NH4+and nitrite ion. In this paper, the nitrify⁃ing bacteria which had been well enriched and cultured were used to degrade NH3/NH4+and ammonia nitrogen in simulated fishery water. Results showed that there was a significant effect of nitrobacteria on decreasing the con⁃centration of NH3/NH4+ and ammonia nitrogen. It could keep the community structure of heterotrophic bacteria steady and adjust the balance of the micro-ecology in water, and then maintained NH3/NH4+and ammonia nitrogen under 0.5 mg·L-1, which was safe for fish and shrimp aquaculture.%污染养殖水体的主要因素是氨/铵（NH3/NH4+）和亚硝酸根离子（NO2-），用固定化粉末硝化细菌、浓缩液态硝化细菌对养殖用水污染源进行处理，比较各种处理对养殖用水中NH3/NH4+和NO2-的降解教果。实验证明硝化细菌能有效调节水环境pH，降低NH3/NH4+和NO2-的浓度，分解有机质，调节水环境的微生态平衡，水体中的NH3/NH4+和NO2-全程都控制在0.5 mg·L-1以下，符合鱼虾类养殖规范的要求。