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  

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

作　　者：林铸炉[1] 盛兆琪[1] 夏伟根 

机构地区：[1]华东理工大学环境工程系

出　　处：《环境科学》1998年第1期62-65,共4页Environmental Science

摘　　要：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（或溶积负荷）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，普通活性污泥系统对氨氮的去除率仅２５％，而浮动填料活性污泥系统的去除率可达７１％．在低泥龄时，浮动填料活性污泥系统中氨氮降解过程遵循动力学方程Ｕ＝Ｕｍａｘ×Ｓｅ（Ｋｓ＋Ｓｅ）．在本实验条件下，Ｕｍａｘ和Ｋｓ分别为１４．６６ｇ／（ｍ２·ｄ）与１０．７２ｍｇ／Ｌ．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/(m2·d)and 1072mg/L respectively under this experimental condition.

关 键 词：浮动填料 硝化 活性污泥法 废水处理 

分 类 号：X703[环境科学与工程—环境工程]