生物陶粒反应器中硝化自养菌与异养菌生长关系的研究

A STUDY ON RELATIONSHIPS BETWEEN HETEROTROPHIC AND AUTOTROPHIC NITRIFYING BACTERIA IN BIOCERAMICS REACTOR

研究了生物陶粒反应器处理微污染源水时，反应器内异养菌对有机物降解与硝化自养菌对氨氮氧化作用之间的相互关系。得出下列结论：①低有机物浓度（ＣＯＤ＜４０ｍｇ／Ｌ）时，进水有机物浓度变化对硝化自养菌去除氨氮的影响不大；高有机物浓度（ＣＯＤ＞４０ｍｇ／Ｌ）时，进水有机物浓度上升对氨氮的去除有抑制作用。②氨氮浓度上升将引起异养菌对有机物去除效率的上升，上升到一定程度后趋于稳定。

The paper describes a study on interactions between neterotrophic bacteria which degrade organic compounds and autotrophic nitrifying bacteria which oxidize ammonia in a bioceramics reactor.Results of the study show that,1)When organic compounds concentration is low(COD<40mg/L),a variation in its concentration in influent has little influence on ammonia removal by autotrophic nitrifier;when its concentration is high(COD>40mg/L),a rise in its concentration in influent will inhibit autotrophic nitrifiers ability to remove ammonia.2)along with the rising of ammonia concentration in influent,removal efficiencies of organic compound by neterotroph will be increased up to a certain degree and then levelled off.