活性污泥吸附重金属离子的研究进展

Development of research on adsorption of heavy metal ions by activated sludge

从处理含重金属离子废水的现状出发,简述了活性污泥吸附重金属离子过程中的表面有机络合、离子交换及其它机理;讨论了温度、时间、pH值、污泥种类、预处理、重金属离子浓度等因素对活性污泥吸附重金属离子的影响,并对解吸方式进行了论述;综述了目前国内外有关活性污泥吸附重金属离子的最新研究成果,指明了进一步加强吸附机理和固定化技术以提高活性污泥应用性的研究是今后的方向。

In view of the current status of the treatment of wastewater containing heavy metal ions, the surface organism complexing, ion-exchange and some other mechanisms in adsorption of heavy metal ions by activated sludge were briefly described; the factors, such as temperature, time, pH value, sludge type, pre-treatment, concentration of heavy metals and so on that affecting the adsorption of heavy metal ions by activated sludge were discussed, furthermore, the fashion of the desorption was also introduced. The resent developments of research on adsorption of heavy metal ions by activated sludge in China and abroad were elaborated, which showed the direction of the future research, that is： improve the applicability of the activated sludge through strengthening its adsorption mechanism and immobilization technology.