摘要
通过中试试验,分析了活性污泥对污染物吸附的影响因素,并考察了活性污泥对城市污水中污染物的吸附效果。试验研究表明,污泥浓度(MLSS)、水力停留时间(HRT)和污泥龄(SRT)对活性污泥吸附污染物的效果有一定的影响,但污泥龄影响较小。在污泥质量浓度为3～5g/L,HRT为36min和SRT为2d的运行参数下,活性污泥对COD,SS,TN和TP吸附效果分别为70.7%,87.7%,30.2%和72.2%。
The adsorption efficiencies of the pollutants in municipal wastewater by activated sludge were investigated in a pilot test, and its main influences were analyzed. Results showed that MISS, HRT and SRT had a certain influence on the adsorption efficiency of pollutants, but the influence of SRT was slight. Moreover, when MISS was 3 ~ 5 g/L, HRT was 36 min and SRT was 2 d, removal rates of COD, SS, TN and TP by activated sludge adsorption were 70.7%, 87.7%, 30.2% and 72.2%, respectively.
出处
《环境科技》
2010年第5期1-3,共3页
Environmental Science and Technology
基金
"十一五"国家水体污染控制与治理科技重大专项(2009ZX07313)"环太湖河网地区城市水环境整治技术集成与综合示范"
关键词
活性污泥
吸附
有机污染物
城市污水
Activated sludge
Adsorption
Organic pollutant
Municipal wastewater
