摘要
研究了城市污水处理厂产生的活性污泥对Cr^(6+),Hg^(2+)和Cd^(2+)3种重金属离子的吸附特征及其主要影响因素。实验表明,活性污泥对上述3种重金属离子有较强的吸附作用,体系的pH值和吸附时间等对吸附的影响较为重要。
The sorption characteristics and the main factors affecting the sludge sorption of Hg^2＋,Cr^6＋and Cd^2＋ using activated sludge of municipal sewage plant were studied in this paper.It was found that the activated sludge has a strong sorption to these three heavy metal ions,the impaction of the pH value,the sorption time and so on are more important.
关键词
活性污泥
生物吸附
重金属离子
activated sludge
bio-sorption
heavy metal ions
