环境工程学报2011，Vol.5Issue(7)：1522-1526,5.
上向流曝气生物滤池反冲洗实验研究
Backwashing of upflow biological aerated filter
摘要
Abstract
In order to get deeper understanding of the relationship between headloss development and back-washing in biological aerated filters (BAFs) , backwashing procedure which employed air washing, water washing and water rinse process was optimized in three BAFs with zeolite, ceramic particle and carbonate media respectively, and the recovery of headloss and treatment efficiency in biofilter after backwashing were also investigated based on the theoretical analysis. The results showed that the initial COD and SS concentration in effluent increased after backwashing but recovered in 2 hours. The ammonia nitrogen concentration in effluent almost did not change and recover quickly. All three BAFs have a promising treatment performance and operational stability after backwashing. The backwashing procedure of upflow BAF is suggested as follows; firstly, air washing 2 ~ 3 min with flow rate of 10 L/( m2 · S) , then air and water washing 3 ~ 5 min with both air and water flow rate of 10 L/(m2 · S) , finally, water rinse for 9 ~ 11 min with water flow rate of 10 L/( m2 · S).关键词
曝气生物滤池/水头损失/反冲洗条件优化/反冲洗效果Key words
biological aerated filter(BAF) / head loss/ backwashing optimization/ backwashing efficiency分类
资源环境引用本文复制引用
邱立平,王广伟,张守彬,陈京英,刘永正..上向流曝气生物滤池反冲洗实验研究[J].环境工程学报,2011,5(7):1522-1526,5.基金项目
国家“水体污染控制与治理”科技重大专项(2009ZX07424-006)；国家自然科学基金资助项目(50978121) （2009ZX07424-006）
