无机废水硝化过程中原生动物群落结构特征及其变化规律

研究了处理人工氨氮配水的反应器硝化过程中原生动物种群结构特征及其变化规律.研究发现,来自城市污水厂的接种污泥随着运行时间的延长,原生动物的种群多样性不断降低.在亚硝酸盐积累阶段,表壳虫(Arcella)成为优势种;在硝酸盐成为主要硝化产物时,原生动物的优势种主要为累枝虫(Epistyli)和匣壳虫(Centropyxis);污泥粒径大小是决定匣壳虫成为优势种的主要原因.

Study on protozoan community structures during the inorganic wastewater nitrification process

Protozoan community structure was investigated during the nitrification process. The results showed that abundance of protozoan was low in the lab-scale reactor with feeding synthetic ammonic wastewater system. The dominant species were Arcella,Epistyli and Centropyxis during the whole operation period. The main factors for protozoan community dynamics were nitrite, nitrate concentrations and sludge size. Arcella was dominated during the nitrite accumulation period, while Centropyxis was dominated affecting by sludge size.