中文摘要：

采用生物除磷颗粒污泥来去除Zn2＋,考察了Zn2＋初始含量、污泥含量、p H、温度、反应时间和共存离子对Zn2＋去除效果的影响,并通过傅里叶变换红外光谱分析去除Zn2＋的主要官能团。结果表明,生物除磷颗粒污泥对质量浓度100 mg/L的Zn2＋的最大吸附量为29.55 mg/g,平衡吸附量为17.54 mg/g,优化p H为5、温度为25~35℃、污泥的质量浓度为1.0 g/L。Zn2＋的去除过程分为快速吸附、慢速吸附和吸附平衡3个过程,符合准2级动力学方程。Ca2＋、K＋、Mg2＋通过离子交换参与了Zn2＋的去除,去除Zn2＋的行为主要是依赖聚磷菌的作用来完成的,Zn2＋在细胞内的比例为33.52%;去除Zn2＋的主要官能团为脂碳链、羧基、伯醇、多聚糖、磷酸基和硫酸基团。

英文摘要：

The research studied on the effect of the initial content of Zn2＋, sludge content, pH, temperature, reaction time and coexisting ions on the removal of Zn2＋ by biological phosphorus removal granular sludge, and analyzed the main functional group which used to remove the Zn2＋by FT-IR. The result showed that the maximum adsorption capacity of mass concentration of Zn2＋ in 100 mg/L Zn （NO3）2 solution by biological phosphorus removal granular sludge was 29.55 mg/g, the average adsorption capacity was 17.54 mg/g and the optimal conditions were pH=5, 25-35 ℃ （temperature）, 1.0 g/L （the mass concentration of sludge）. The removal process of Zn2＋ is divided into fast adsorption, slow adsorption, and adsorption equilibrium three processes, in accordance with pseudo two order kinetics equations. That the Ca2＋, K＋, Mg2＋ occurred ion exchange with Zn2＋ involved in the removal of Zn2＋. The mechanism of Zn2＋ removal by biological phosphorus removal granular sludge was related to the interaction of Zn2＋ and polyphosphates inside the cell of phosphorus accumulating organisms （PAOs）, the proportion of Zn2＋ in the cell was 33.52%. The main functional groups participating in the removal ofZn2＋ were found, including Carbon chain, carboxyl, primary alcohols, polysaccharides, phosphoric acid and sulfuric acid groups.