水环境中细菌浓集回收方法建立  

A method for enrichment of bacteria in water

作　　者：邱志刚[1] 王景峰[1] 王新为[1] 金敏[1] 谌志强[1] 陈照立[1] 刘莎[1] 李君文[1] 

机构地区：[1]军事医学科学院卫生学环境医学研究所环境卫生与卫生工程研究室,天津300050

出　　处：《中国公共卫生》2010年第5期536-537,共2页Chinese Journal of Public Health

基　　金：国家"863"计划(2006AA06Z408);国家"十一五"科技支撑计划项目(2006BAD01B06)

摘　　要：目的合成新型载正电荷材料氢氧化镁铝,并组建浓集过滤系统和方法,回收水环境中的细菌。方法利用化学合成方法合成正电荷材料—氢氧化镁铝,通过研磨制成滤料,利用扫描电镜和能谱技术分析滤料的粒径、表面状态及成分,设计制作用于吸附浓集水中细菌的过滤装置,并建立水中细菌浓集、回收系统和方法。结果所制备的滤料为Mg∶Al=2.41∶1的二元混合金属氢氧化物,结构为片层状与理论一致;滤料颗粒直径250μm左右,比较均匀。建立的细菌浓集、回收系统和方法能够滤除>95%的水中细菌,细菌回收率>90%,处理水样可以达到15 L以上。结论合成的氢氧化镁铝及建立的浓集回收方法能够很好的回收水环境中细菌。Objective To synthesize a new kind of anodic charge materials-alaminum-magnesium hydroxide and to design an enrichment method to concentrate bacteria from water environment.Methods Anodic charge materials-aluminium-magnesium hydroxide was synthesized by chemosynthesis and grinded to particle for a filter.The particle size,surface condition of the filter and composition of the filter were investigated with scanning electron microscope and energy spectrum technique.A filtration device to absorb and concentrate the bacteria in water was made with the anodic charge material.The method of enriching bacteria from water was established.Results The filtering material is mixed metal dual hydroxides and the proportion of magenesium and aluminiam is 2.41∶1.The size of the filter particle is about 250 μm in diameter and uniform.The established method with the filter materidal could filter out 95% of bacteria from tap water.The enrichmetn system established could treat 15 liters of water.Conclusion With the anodic charge material,the enrichment method could perfectly concentrate bacteria in water samples.

关 键 词：正电荷材料 细菌浓集 致病菌 氢氧化镁铝 水环境 

分 类 号：R123.1[医药卫生—环境卫生学]