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湖泊科学  2009 

有机改性粘土对铜绿微囊藻的絮凝去除

DOI: 10.18307/2009.0308

Keywords: 十六烷基三甲基溴化铵,铜绿微囊藻,絮凝沉降,电镜扫描,网捕

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Abstract:

如何有效的去除富营养化水体中频繁出现的藻华,已成为湖泊环境治理中的一个迫切问题.通过用表面活性剂十六烷基三甲基溴化铵改性的原位沉积物为介质,利用搅拌器和沉积物再悬浮发生装置来研究烷基铵盐改性物质絮凝去除铜绿微囊藻细胞的作用和效果.结果表明,烷基铵盐和粘土的添加量分别为0.3g/L和0.2g/L,搅拌停止30min后,其去除效率达83.9%;在絮凝沉降500min后,水体中藻细胞去除率可达98.9%,较能有效的絮凝沉降藻细胞;同时水体的浊度也有相应的提高.电镜扫描表明这种活性剂形成的网捕包膜作用对藻细胞的沉降起到了重要作用.但烷基铵盐的杀菌作用可能会造成藻细胞内含物向水体释放的风险.

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