摘要
日化厂废水成分复杂,其中表面活性剂、含P化合物、油脂、色素等严重污染生态环镜,较难处理。本文采用小规模的间歇式活性污泥法(SBR)生物反应器降解处理日化厂废水,分析了废水降解过程中污泥体积指数、污泥负荷、容积负荷等微生物学的特性变化,并讨论了曝气时间、污泥负荷、容积负荷对污染物去除率的影响。结果表明,通过对普通活性污泥的培养与驯化,利用SBR工艺降解处理日化厂废水是可行的。当曝气时间为4.5h,污泥负荷为1.2kg/(kg·d)(以MLSS计的COD),容积负荷为2.1～2.3g/(L·d)时,COD、油脂、总磷、表面活性剂(SAA)、SO42-等的去除率分别可达92.3%,99.1%,99.3%,99.3%,99.0%和98.9%。
The present article aims to introduce the authors＇ experimental research with the leftover ingredients from the daily chemical wastewater. As is in the chemical industry practice, the surface active agents, phosphorus compound, pigments et al are difficult to be treated and separated form the sewage and therefore bring about pollution to the environment. However, the problem can be solved by using a method known as the pilot-scale sequencing batch process, which is a process being simple, efficient, economic, flexible as well as compact. The experiment of ours is conducted by using a pilotscale sequencing batch reactor （SBR） each time treating a small amount of the daily chemical sewage. In our experiment, we analyze the main microbiological characters of the SBR process and discuss the effect of the aeration time, the sludge load, the volume load on the removing efficiency of the pollution, and so on. The experimental results make us to find that the biodegradation of the daily chemical sewage is of great use and can easily be made to use the cultured and domesticated active sludge and SBR process. Our experimental results prove that when the aeration time is 4.5 h, the sludge loading is 1.2 kg/（kg＇d） and the volume loading is 2.1 - 2.3 g/（L·d）, with the removing ratio of COD, grease, phosphorus, with the surface active agents （SAA）,SO^2- being 92.3%, 99.1%, 99.3%, 99.0%, 98.9% respectively.
出处
《安全与环境学报》
CAS
CSCD
2006年第3期107-109,共3页
Journal of Safety and Environment
关键词
环境工程
日化废水
间歇式活性污泥法
表面活性剂
污泥负荷
容积负荷
environmental engineering
daily chemical waste water
sequencing batch reactors
surface active agent
volume load
sludge load
