The impact of conventional water treatment processes on cells of the cyanobacterium Microcystis aeruginosa
The impact of conventional water treatment processes on cells of the cyanobacterium Microcystis aeruginosa
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DOI：
10.1016/s0043-1354(99)00051-2
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发表时间：
1999-10-01
期刊：
影响因子：
12.8
通讯作者：
Velzeboer, RMA
中科院分区：
文献类型：
--
作者：
Chow, CWK;Drikas, M;Velzeboer, RMA
蓝细菌可产生毒素、味道和气味，严重损害水质。在水处理过程中去除完整的蓝藻细胞及其细胞内化合物可能会降低处理过的水中存在的味道，气味和有毒细胞代谢物的浓度。在这项研究中，传统的水处理工艺，使用硫酸铝（明矾）的毒性铜绿微囊藻细胞的完整性的影响进行了评估，使用两个罐子测试和试点工厂的研究。移除M。使用广口瓶试验装置通过明矾絮凝对铜绿假单胞菌细胞的测定表明，所有细胞都被除去而不损害膜的完整性。因此，化学处理和机械作用对培养的M.铜绿假单胞菌细胞，更重要的是，没有导致细胞代谢物的额外释放高于背景浓度。对于中试工厂实验，其中包括混凝/絮凝-沉淀-过滤，大部分细胞被完整地去除，并且在成品水中没有发现额外的微囊藻毒素。(C)1999 Elsevier Science Ltd.保留所有权利。
Cyanobacteria can produce toxins, tastes and odors which significantly impair water quality. Removal of intact cyanobacterial cells with their intracellular compounds during water treatment would potentially reduce the concentration of taste, odor and toxic cell metabolites present in the treated water. In this study, the effect of conventional water treatment processes using aluminum sulphate (alum) on the integrity of cells of toxic Microcystis aeruginosa was evaluated using both jar tests and pilot plant studies. Removal of M. aeruginosa cells by alum flocculation using a jar test apparatus indicated all cells were removed without damage to membrane integrity. Thus the chemical treatment and mechanical action did not damage the cultured M. aeruginosa cells and, more importantly, did not result in additional release of cell metabolites above background concentrations. For pilot plant experiments, which consisted of coagulation/flocculation-sedimentation-filtration, most of the cells were removed intact and no additional microcystin was found in the finished water. (C) 1999 Elsevier Science Ltd. All rights reserved.