中文摘要：

采用序批式活性污泥法反应器培养的好氧颗粒污泥作为吸附剂对Pb2＋、Cu2＋、Cd2＋进行吸附，研究单一吸附及竞争吸附行为，探讨了pH、初始含量、平衡时间以及共存离子等对吸附过程的影响。结果表明，在一定范围内，吸附量随pH和金属离子初始含量升高而升高，20min能到到吸附平衡；共存体系中的吸附量低于单种离子吸附，3种离子共存时，Pb2＋、Cu2＋、Cd2＋的吸附量分别为单种离子吸附的43．80％、43．01％和18．95％。

英文摘要：

Single absorption and competition adsorption are studied by using aerobic granular sludge cultivated by SBR as the adsorbent to adsorb Pb2＋, Cu2＋, Cd2＋. The effect ofpH, initial concentration of heavy metal ion, equilibrium time and multiple ion system on adsorption was also studied. The results show that adsorption capacity increase with increasing the pH and initial concentration of ion within a certain range, and adsorption equilibrium achieved after 20 min. The adsorption capacity of multiple ion system is less than single system. When coexistence of three ions, the adsorption capacity ofPb2＋, Cu2＋, Cd2＋ is about 43.80%, 43.0 1% and 18.95% of that in single ion system, respectively.