稀土La改性污泥制备介孔陶粒及其除磷性能研究  

Study on Adsorption Mechanism of Phosphorus in Water by Mesoporous Ceramsite Prepared from Rare Earth La Modified Sludge

作　　者：李春立 李权 郝禅光 梁欢[2] 邢丽静 徐峥 Li Chunli;Li Quan;Hao Changuang;Liang Huan;Xing Lijing;Xu Zheng(Yangtze Ecology and Environment Co.,Ltd.,Hubei,430077;School of Resources and Safety Engineering,Wuhan Institute of Technology,Hubei,430074)

机构地区：[1]长江生态环保集团有限公司,湖北430077 [2]武汉工程大学资源与安全工程学院,湖北430074

出　　处：《当代化工研究》2023年第22期183-185,共3页Modern Chemical Research

基　　金：长江生态环保集团有限公司科技创新团队资助项目“湖北区域公司多业态运营管理科技创新团队外委合作研究”(项目编号:HBHB2023005);武汉工程大学第十四届研究生教育创新基金资助项目“污泥制备多孔陶粒及其深度除磷机理研究”(项目编号:CX2022595)。

摘　　要：随着我国城镇化的高速发展,污水处理产生的污泥量迅速增加,随之而来污泥的处理和处置也越来越突出。本研究以污水处理厂污泥为主要原料,通过稀土金属La改性污泥后,添加粉煤灰、蒙脱石为辅料制备得到一种介孔污泥陶粒(MSC),并探讨了其对模拟含磷废水的吸附性能。研究结果表明,当改性污泥:粉煤灰:蒙脱石质量配比为4:3:1制备得到的MSC具有丰富的孔隙结构,其比表面积为4.292m^(2)/g,单孔孔容为0.627cm^(3)/g;当pH为5.0的条件下,投加量为10g/L时,MSC对模拟废水(总磷浓度10mg/L)中磷酸盐吸附率达到98.5%。With the continuous development of urban industrialization,the disposal problem of sludge solid waste is increasingly significant.With La modified sludge as the main raw material,add fly ash,montmorillonite was prepared a kind of mesoporous sludge ceramsite(MSC).The adsorption performance of sludge ceramsite was tested by simulating phosphorus-containing wastewater with KH2PO4 solution.The results showed that,with the mass ratio of modified sludge:fly ash:montmorillonite was 4:3:1,the prepared MSC had rich pore structure.The specific surface area of MSC was 4.292 m^(2)/g,and the single pore volume of MSC was 0.627 cm^(3)/g.The phosphorus adsorption rate of 10 mg/L simulated phosphorus solution at pH 5 and dosage 10 g/L was 98.5%.

关 键 词：污泥 稀土改性 除磷 吸附 

分 类 号：X705[环境科学与工程—环境工程]