基于改性固废陶粒的固定床反应装置除磷效能实验研究  

Experimental Study on the Removal Efficiency of Phosphorus Using a Fixed-bed Column Packed with Modified Solid Waste Ceramsite

作　　者：王仕林 李天鹏 陈占 焦朋朋 WANG Shilin;LI Tianpeng;CHEN Zhan;JIAO Pengpeng(College of City and Architecture Engineering,Zaozhuang University,Zaozhuang 277160,China)

机构地区：[1]枣庄学院城市与建筑工程学院,山东枣庄277160

出　　处：《山东化工》2025年第1期52-55,69,共5页Shandong Chemical Industry

基　　金：枣庄学院“青檀学者”优秀青年人才项目(QTXZ2020);枣庄学院第四届自编教材重点项目(202303);教育部供需对接就业育人项目(2023121509764);山东环境科学学会课题(202301)。

摘　　要：用表面沉积法制备FeCl_(3)改性固废陶粒(Fe-SWC)后,采用静态和动态实验,研究其除磷性能。结果表明,Fe-SWC物理性能满足我国行业标准(CJ/T 299—2008)要求,其浸出液中金属离子含量低于我国国家标准(GB 5085.3—2007)阈值。Fe-SWC对水中磷的平衡吸附量约为5.87 mg/g,Langmuir等温式和准一级动力学方程均可较好地描述此吸附行为(R^(2)>0.98)。随初始浓度及进水流速降低或反应温度升高,基于Fe-SWC的固定床反应装置去除水中磷的穿透曲线逐渐变平缓,穿透时间和饱和时间均随之增加,此过程可用Yoon-Nelson固定床反应动力学模型进行描述(R^(2)>0.98)。The FeCl_(3) modified solid waste ceramsite(Fe-SWC)was prepared by surface directional deposition,and then the batch and column experiments were employed to enquire into its phosphorus removal performance.The results showed that the investigated physical properties of Fe-SWC completely met with the China′s industry standard of CJ/T 299—2008,and the concentration of metal ions in the lixivium were lower than the China national standard of GB 5085.3—2007.The equilibrium adsorption amount of Fe-SWC for phosphorus in water was about 5.87 mg/g,and the equilibrium isotherm and adsorption kinetic of phosphorus adsorption on Fe-SWC were described well by the Langmuir isotherm and pseudo-first-order kinetics,with R^(2)>0.98,respectively.With the decreased in the initial concentration and flow rate or the increased in the reaction temperature,the breakthrough curve of phosphorus from aqueous solution by a fixed-bed column packed with Fe-SWC became less steep gradually,both breakthrough and saturation times were increased.Moreover,the Yoon-Nelson fixed-bed reaction kinetic model could accurately describe this removal process,with R^(2)>0.98.

关 键 词：固废陶粒 表面改性 固定床反应装置 除磷 动力学分析 

分 类 号：X705[环境科学与工程—环境工程]