活性污泥吸附重金属铜的实验研究

Experimental Study on Adsorption of Cu with Activated Sludge

摘要: 重金属污染已为当前环境污染处理的重要问题之一。本文研究了两种活性污泥对重金属铜的吸附特性，测定活性污泥对铜离子的吸附率；探讨了污泥添加量、初始pH值对铜吸附率的影响。结果表明：活性污泥对重金属铜具有一定的吸附性能，絮状活性污泥的吸附性能优于颗粒状活性污泥；随着活性污泥添加量的增加，铜的去除率逐渐增大并趋于稳定；活性污泥吸附率受pH影响较大，且存在一最佳值。

Abstract: At present, the heavy metal pollution is one of the important problems in environment pollution treatment. In this paper, the adsorption characteristic of the copper is studied by using two kinds of activated sludge. The influence of adding quantity of sludge and the pH on the copper adsorption rate is explored. The results show that the activated sludge has certain adsorption property for the heavy metal copper. The adsorption property of flocculent activated sludge is prior to that of the granular sludge. The removal rate of copper iron increases gradually and goes to stability following the adding quantity of activated sludge. The value of pH has important effect on the adsorption rate of activated sludge and there is an optimal value of pH to obtain high adsorption rate.