AOA膨胀床组合生物滤池处理生活污水中污染物的去除规律  

Pollutants Removal Performance of AOA Expanded Bed Combined with Biological Filter for Urban Sewage

作　　者：端艳 陆少鸣 江荻 李嘉树 

机构地区：[1]华南理工大学环境与能源学院,广东广州510006

出　　处：《水处理技术》2018年第1期91-95,共5页Technology of Water Treatment

基　　金：国家重点研发计划项目(2016YFC0400705)

摘　　要：以宁东镇某城镇污水处理厂初沉池出水为原水,研究AOA膨胀床组合生物滤池对污染物的去除规律及效果。结果表明,各级滤柱的前端对污染物有较强的去除能力;SS、COD、TN的去除主要发生在第1级降流柱中,且在滤料层的底端NO_3^--N的转化率达到88%以上,基本可实现完全反硝化;NH_4^+-N的去除主要发生在第2级好氧滤柱的滤层前端,该级滤柱对NH_4^+-N的去除率可达77.56%;TP的去除主要发生在第3级降流柱中,依靠化学强化除磷作用,其去除率可达76.23%,且第3级滤柱可达到强化去除SS和TN的目的。经过3级AOA组合生物滤池后,处理出水均能达到GB 18918-2002的一级A标准。Using the primary sedimentation basin effluent from urban sewage treatment plant in Ningdong town as raw wastewater, the pollutants removal performance of AOA expanded bed combined with biological filter was studied. The results showed that, the forepart of different filter column had stronger pollutarlts removal capacity. The removal of SS, COD and TN mainly occurs in the first step downflow suspended filter, the percent conversion of NO3- N was more than 88% in the bottom of the filter layer, basically could achieve complete denitrification. The second step upflow aerated filter, had high efficiency in nitrification, the removal rates of NH4＋-N was 77.56%. In the third step downflow suspended filter, the removal rates of TP was 76.23% by chemically enhanced phosphorus removal, and it could achieve the purpose of strengthening the removal of SS and TN. After the AOA expanded bed combined with biological filter, the effluent quality reached GB 18918--2002 first level of A standard.

关 键 词：生活污水 AOA组合生物滤池 悬浮填料 沿程 

分 类 号：X799.3[环境科学与工程—环境工程]