摘要
针对养猪场水冲粪工艺悬浮物含量高、水量不稳定的特性,采用二级沉淀的前处理工艺,选择厌氧池-缺氧池-好氧生物滤池作为主体单元,通过好氧出水回流方式强化系统的脱氮性能。根据实验数据分析比较不同进水负荷、回流比条件下污染物的去除情况,并且对不同实验参数的能耗进行了量化。启动后,COD与NH4+-N容积负荷分别可达12 kg/(m3·d)与0.64 kg/(m3·d)。在300%回流体积比的运行条件下,系统整体效能最高,COD、NH4+-N、TN去除率分别为97.6%、82.8%、85.0%,能耗为0.95 k Wh/m3。
Based on the characteristics of high suspended solid,flux in piggery wastewater flow,two connected settling tank and a series of anaerobic tankpredenitrification tank-aerobic biological filter were selected as the pretreatment process and main part in this experiment,respectively. This configuration and aerobic output refluxing were expected to strengthen its denitrification efficiency. Pollutant removal efficiency were compared with each other according to the data under different hydraulic loading and reflux ratio,and a quantitative analysis of power consumption was carried out at the same time. After the start-up,COD and ammonia volumetric loading reached as much as 12.0 kg/（m^3·d）,0.64 kg/（m^3·d）. When the reflux volume ratio was 300%,entire efficiency reached its peak,and power consumption was 0.95 kWh/m^3. Removal efficiency of COD,NH4^＋-N,TN was 97.6%,82.8%,85.0%,respectively.
出处
《水处理技术》
CAS
CSCD
北大核心
2014年第12期100-103,114,共5页
Technology of Water Treatment
基金
中国科学院知识创新工程重要方向性项目(KZCX2-YW-JC105)
关键词
生物滤池
养猪废水
回流比
脱氮
biological filter
piggery wastewater
reflux ratio
predenitrification
