氯化铝改性复合生物絮凝剂去除饮用水中的氟  

Removal of Fluoride from Drinking Water with Aluminum Chloride Modified Composite Bioflocculant

作　　者：宋淑敏 刘伟 徐晓军[1] 曹广祝[2] SONG Shu-min;LIU wei;XU Xiao-jun;CAO Guang-zhu(Faculty of Environmental Science and Engineering,Kunming University of Science and Technology,Kunming 650500,China;Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming 650500,China;Yunnan Biaojie Huanbao Technology Co.Ltd.,Kunming 650212,China)

机构地区：[1]昆明理工大学环境科学与工程学院,昆明650500 [2]昆明理工大学国土资源工程学院,昆明650500 [3]昆明标洁环保科技有限责任公司,昆明650212

出　　处：《有色金属（冶炼部分）》2019年第10期80-85,共6页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家自然科学基金资助项目(41562012)

摘　　要：采用实验室筛选出的耐铝无毒复合菌,以AlCl 3·6H 2O为改性剂,得到改性复合生物絮凝剂,用于去除饮用水中氟。研究了改性复合生物絮凝剂投加量、pH和反应时间对F-去除效果的影响,使用扫描电镜(SEM)观察了复合生物絮凝剂和改性复合生物絮凝剂的表面形态,并分析了改性复合生物絮凝剂的除氟机理。结果表明:经过氯化铝改性后,复合生物絮凝剂表面的羟基和Al^ 3+得到了增加,且在絮凝剂表面可能形成羟基氧化铝,通过铝氟络合、氢键和静电吸附作用去除氟。Aluminum-resistant non-toxic complex bacterium screened by laboratory was modified by AlCl 3·6H 2O to remove fluorine from drinking water.Effects of dosage of modified bioflocculant,pH value and reaction time on F-removal effect were studied.Surface morphology of complex bioflocculant and modified bioflocculant was observed by scanning electron microscopy(SEM),and fluorine removal mechanism of modified composite bioflocculant was analyzed.The results show that after modification with aluminum chloride,hydroxyl groups and Al ^3+on surface of composite bioflocculant rise,and aluminum hydroxide is formed on surface of flocculant.Fluorine removal mechanism is by means of aluminum fluoride complexing,hydrogen bond and electrostatic adsorption.

关 键 词：改性复合生物絮凝剂 F-去除 饮用水 

分 类 号：X52[环境科学与工程—环境工程]