生物除磷颗粒污泥对Zn2＋的去除特性研究  

The Characteristics of Zn^(2+) Removal by Biological Phosphorus Removal Granular Sludge

作　　者：李硕[1,2] 王然登[1] 彭永臻[1,3] LI Shuo WANG Rangdeng PENG Yongzhen(State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China CRRC Tangshan Co., Ltd, Tangshan 064000, China Engineering Research Center of Beijing, Key Laboratory of Beijingfor Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China)

机构地区：[1]哈尔滨工业大学,城市水资源与水环境国家重点实验室,黑龙江哈尔滨150090 [2]中车唐山机车车辆有限公司,河北唐山064000 [3]北京工业大学,水质科学与水环境恢复工程北京市重点实验室,北京市脱氮除磷处理与过程控制工程技术研究中心,北京100124

出　　处：《水处理技术》2017年第2期22-28,共7页Technology of Water Treatment

基　　金：国家自然科学基金(51578014);城市水资源与水环境国家重点实验室开放基金(QAK201502)

摘　　要：采用生物除磷颗粒污泥来去除Zn^(2+),考察了Zn^(2+)初始含量、污泥含量、p H、温度、反应时间和共存离子对Zn^(2+)去除效果的影响,并通过傅里叶变换红外光谱分析去除Zn^(2+)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Zn^(2+)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。Zn^(2+)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。Ca^(2+)、K^+、Mg^(2+)通过离子交换参与了Zn^(2+)的去除,去除Zn^(2+)的行为主要是依赖聚磷菌的作用来完成的,Zn^(2+)在细胞内的比例为33.52%;去除Zn^(2+)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。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.

关 键 词：生物除磷颗粒污泥 含锌废水 聚磷菌 傅里叶变换 

分 类 号：X703.1[环境科学与工程—环境工程]