固定化硝化细菌耐低温机理的研究

Mechanism Study of Tolerance of Immobilized Nitrifying Bacteria Towards Low Temperature

固定化硝化细菌耐低温机理的研究郑平徐向阳冯孝善（浙江农业大学环保系杭州３１００２９）氨随污水排入水体，不但能诱发“富营养化”，造成水生生态系统紊乱，而且还有如下危害：（１）消耗溶解氧，导致水体缺氧；（２）影响鱼鳃的氧传递，严重时使鱼类死亡；（３）与氯...

Immobilized Nitrosomonas europaea and Nitrobacter agilis were found to be less sensitive to low temperature than their suspended cells. In order to explore its mechanism, activation energies for the maximum specific respiration activity, for the Monod constant and for the oxygen diffusion in carrageenin were determined and compared. It was shown that both the effect of diffusion limitation and the effect of temperature on the Monod constant were responsible for the better tolerance towards low temperature.