普通活性污泥系统曝气池中投加浮动填料提高硝化能力的研究

在普通活性污泥系统的曝气池中投加一定量的浮动填料可增加曝气池中的生物体量达６．５ｇ／Ｌ，能提高硝化菌的附着量和阻止硝化菌的流失。实验证明，在浮动填料活性污泥系统中ＨＲＴ对硝化能力的影响远小于普通活性污泥系统；当ＨＲＴ为８ｈ，泥龄为３ｄ时，普通活性污泥对氨氮的去除率仅２５％，而浮动填料活性污泥系统的去除率可达７０％。

A Study on Enhancing Nitrification by Adding Porous Floating Biomass-Supporting Packings in the Conventional Activated Sludge System

The biomass concentration could be augmented to 6.5g/L when some porous floating biomass-supporting packing were added in the tank of conventional activated sludge system.The porous floating packing can increase the adsorption of nitrobacteria and thus retard their loss.It is verified by the experiments that the influence of hydraulic rentention time to the nitrification in the suspended carrier activated sewage(SCAS)is much less than in the conventional activated sludge process(ASP).When the HRT is 8h and the sludge age is 3d,the removal of ammonia is 71% in the SCAS and only 25% in the ASP.It can be modeled with the dynamic equation of U=U_max × S_e(K_s+S_e)that the degradation ammonia in the SCAS at the lower sludge age;the value of U_max and K_s is 14.66g/(m²·d)and 10.72mg/L respectively under this experimental condition.