同步脱氮除磷吸附剂的制备工艺及性能表征  

Preparation of Adsorbent of Simultaneous Removal of Ammonium and Phosphate and Its Characterization

作　　者：骆其金[1] 谌建宇[1] 庞志华[1] 王振兴[1] 罗隽[1] 林方敏[1] 

机构地区：[1]环境保护部华南环境科学研究所,广东广州510655

出　　处：《环境科学与技术》2013年第7期112-116,共5页Environmental Science & Technology

基　　金：国际合作项目(2009DFA91780);环保公益性行业科研专项(201009012);环境保护部华南环境科学研究所所公益项目(201012-004);工业区排水对水源型河流风险控制技术集成与综合示范(2012ZX07206002)

摘　　要：采用改性溶液浸泡改性的方法,对粉煤灰沸石进行改性,制备同步脱氮除磷吸附剂。实验结果表明,粉煤灰沸石在改性浓度0.5%,改性pH为10,改性时间24 h,改性固液比1:5的条件下,制得的吸附剂对氨氮、磷的去除率均在90%以上,氨氮吸附平衡时间可缩短至30 min,改性后BET比表面积略有减小(由45.804 m2/g降至43.761 m2/g),改性没有改变粉煤灰沸石的晶型结构,属于表面改性。Zeolite synthesized from fly ash（ZFA） was modified using solution of lanthanum ions to prepare adsorbent of simultaneous removal of ammonium and phosphate.Results showed that under the optimal concentrations of lanthanum ions 0.5%,pH of the solution of lanthanum ions 10,modified time 24 h,solid-to-liquid ratio 1： 5,the obtained adsorbents removal rate of ammonium and phosphate were over 90%,and specific surface area decreased from 45.804 m2/g to 43.761 m2/g.For the LaMZ,the adsorption equilibrium can be done in 30 min,crystalline structure of zeolite synthesized from fly ash didn’t change by the modification.

关 键 词：粉煤灰沸石 稀土 改性 脱氮除磷 

分 类 号：X703.5[环境科学与工程—环境工程]