复合凹凸棒滤料去除氨氮和有机物试验研究  

An Experimental Study on Removal of Ammonia Nitrogen and Organic Material by Composite Attapulgite Filter

作　　者：缪伟[1] 黄新[1] 王郑[1] 荆肇乾[1] 

机构地区：[1]南京林业大学,南京210037

出　　处：《森林工程》2009年第3期66-70,共5页Forest Engineering

基　　金：江苏高校自然科学研究计划项目(08KJ610003);2007年南京林业大学科技创新基金项目(163050023)

摘　　要：通过静态吸附实验和动态过滤实验研究复合凹凸棒滤料对氨氮和有机物的去除效果。静态实验结果表明：在氨氮初始浓度为5mg／L，溶液pH值在3—9时，吸附量较高；复合凹凸棒滤料对氨氮的吸附行为符合Freundlich方程，相关系数在0．99以上。动态试验结果表明：复合凹凸棒滤料易于微生物附着挂膜，能够实现对普通滤池进行生物强化。在滤速6m／h时，复合凹凸棒生物过滤对CODMn去除率为32．6％～42．1％，对NH4^＋-N去除率为75．7％～87.8％。复合凹凸棒滤料生物滤池处理工艺不需增加新构筑物，适用于老水厂升级改造和新水厂建设。The removal effect of ammonia nitrogen and organic material with composite attapulgite filter by static adsorption experiment and dynamic filtration experiment was studied. The results of static adsorption experiment showed that a higher ammonia nitrogen adsorption capacity when the initial concentration of ammonia nitrogen was 5 mg·L^-1 and pH value ranged from 3.0 to 9.0. The adsorption behaviour on ammonia nitrogen with composite attapulgite fihe was well fitted by Freundlich isotherm, with the correlation coefficients over 0. 99. Additionally, the results of dynamic filtration experiment showed that it can strengthen ordinary fher biologically based on the filter＇s well biofilm attaching and culturing capability. When the filter-speed was 6 m/h, the removal rate of CODMn by attlgite biological filter was 32.6% - 42.1%, and the removal rate of NH4^＋ -Nwas 75.7% - 87.8%. Composite attapulgite material biological filter need not new equipment, which was suitable for old water plant upgrading and new water plant building.

关 键 词：复合凹凸棒滤料 吸附 生物过滤 氨氮 有机物 

分 类 号：TQ424.25[化学工程]