晶化温度对铁铝复合吸附剂除磷效能影响  

Effect of Crystallization Temperature on Phosphorus Removal of Iron-aluminum Composited Adsorbent

作　　者：杨艳玲[1] 范茜[1] 李星[1] 李圭白[2] 

机构地区：[1]北京工业大学北京市水质科学与水恢复工程重点实验室,北京100022 [2]哈尔滨工业大学市政环境工程学院,哈尔滨150090

出　　处：《北京工业大学学报》2008年第5期534-538,共5页Journal of Beijing University of Technology

基　　金：国家自然科学基金(50378004);中国博士后科学基金(2005038040);北京市属市管高校人才强教计划资助项目(05004014200701);北京市自然基金(8082009)．

摘　　要：考察了不同晶化温度下制备的铁铝复合吸附剂去除PO_4^(3-)-P的性能以及pH值和共存干扰离子CO_3^(2-)对其吸附去除PO_4^(3-)-P性能的影响.结果表明,晶化温度对铁铝复合吸附剂去除PO_4^(3-)-P的性能有显著影响,较低晶化温度下制备的铁铝复合吸附剂去除PO_4^(3-)-P效果明显优于高温制备的吸附剂;晶化温度的升高使晶体本身结构发生变化,导致比表面积降低,是其吸附性能下降的主要原因;较低晶化温度下制备的铁铝复合吸附剂去除PO_4^(3-)P的性能受pH值影响较小,对水质适应性强;共存离子CO_3^(2-)-对铁铝复合吸附剂去除PO_4^(3-)P的性能具有强抑制作用,应用中应该尽量避免这种负面干扰作用的存在.Performance of phosphate removal by iron-aluminum composited adsorbent is studied under different crystallization temperature, Influences of pH value and coexisting ions of CO3^2- to performance of adsorption phosphate removal are investigated. Results show that phosphorus removal performance of the adsorbent is influenced remarkably by crystallization temperature. Phosphorus removal performance of the adsorbent prepared at lower temperature has better performance than that at higher temperature. The main reason of decreasing adsorption performance is that the specific surface area is reduced by crystal structure change caused by increasing crystallization temperature. Phosphorus removal performance of the adsorbent prepared at lower temperature is less influence by pH value. The adsorbent shows good adaptability to water quality. Phosphorus removal performance of the adsorbent is played strongly inhibitory action by coexistent ion CO3^2-. The opposite negative interference action should be avoided in practical applications.

关 键 词：铁铝复合吸附剂 晶化温度 除磷 PH值 CO3^2- 

分 类 号：TU991.2[建筑科学—市政工程]