摘要
Abstract
Hydraulic loading, ratio of air and water, COD loading, media thickness and microorganisms were studied based on the experiments of laundry wastewater treatment by biological aeration filter (BAF) with two-stage composite filter media. The results show the optimum operation conditions are as follows: hydraulic loading is 1.4 m3/m2·h; ratio of air and liquid is 2: 1. In working condition I , average removal rate of COD is 91.3 %, average removal rate of LAS is 88.4 %, average removal rates of TN and TP are 29.8 % and 39.7 %, respectively. In working condition Ⅱ, removal rate of COD is 87.1%, average removal rate of LAS is 93.3 %. COD, LAS, TP and TN of effluent are 56 mg/L, 3.1 mg/L, 0.5 mg/L and 15.8 mg/L, respectively.关键词
洗衣废水/曝气生物滤池/滤料/效能Key words
laundry wastewater biological aeration filter (BAF) filter media effectiveness分类
建筑与水利
