摘要
采用正交设计法对温度、盐度和 pH值对生物膜转氨氮能力的影响进行考察。考虑到生物过滤器的一般工作环境 ,3个因子各取三水平 ,为了充分考虑交互作用 ,选用正交表L27(313)。结果表明 ,取值范围内盐度和 pH值对硝化细菌代谢的影响不明显 ,温度对硝化细菌的代谢有明显的影响 ,而且25℃组的氨氮去除率最高。
Nitrosomonas were attached onto spherical shaped bio filters and incubated with 5 mg/L,NH 3 N at various temperatures, levels of salinity and pH. As expected, measured rates of nitrite formation were significantly influenced by temperature. Unexpectedly however, the optimal temperature for growth was found to be 15 ℃. Saltiness and pH (salinity ranging between 10‰ and 30‰, and pH between 7.5 and 8.5) failed to display any major influence on ammonia oxidation.
出处
《海洋科学》
CAS
CSCD
北大核心
2001年第6期42-43,共2页
Marine Sciences
基金
中国科学院重大项目典型湖泊
海湾渔业资源调控及优质高效模式研究项目资助
