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Riverbank Filtration: A South Australian Study of Processes Influencing the Removal of Cyanobacterial Hepatotoxins From Drinking Water 河岸过滤:南澳大利亚对饮用水中蓝藻肝毒素去除过程的研究
发布日期: 2002-06-16
蓝藻肝毒素、微囊藻毒素LR和结瘤素可能会产生负面影响 最近,巴西一家医院有50名患者因饮用受微囊藻毒素污染的水而死亡,这突显了人类健康问题 作为肾透析治疗的一部分。有必要 在发展中国家和偏远社区,采用低成本、易于维护的毒素清除策略。银行过滤 水通过含水层物质的自然和/或人工运动是去除蓝藻毒素的一种可能的候选技术 来自饮用水供应。一旦存在于环境中,毒素就可以通过土壤运输,最终进入土壤 含水层,被微生物降解或与土壤物质的有机和/或矿物部分结合。有几项研究已经完成 调查了蓝藻毒素在环境中的持久性。 然而,由于土壤性质不同,这些方法无法就影响吸附的过程得出任何结论 未进行量化,土壤颗粒中的毒素回收方法也未得到验证。详细了解 需要对特定污染物的命运产生影响,才能评估排滤作为去除污染物的效率 蓝藻毒素的策略。 更具体地说,本研究的目的是:检查吸附过程的类型 在广泛的土壤中与微囊藻毒素LR和根瘤素一起出现;确定影响水质的水质参数 吸附;评估土壤微生物区系降解毒素的可能性。包括16个参考文献、表格和图表。
The potential for the cyanobacterial hepatotoxins, microcystin-LR and nodularin, to adversely effect human health was recently highlighted by the death of 50 patients in a Brazilian hospital who received microcystin contaminated water as a part of their renal dialysis treatment. There is a need in developing countries and in remote communities for a low cost, easily maintained toxin removal strategy. Bank filtration, the natural and/or artificial movement of water through aquifer material, is a possible candidate technique to remove cyanobacterial toxins from drinking water supplies. Once present in the environment the toxins can be transported through the soil water ultimately entering an aquifer, degraded by micro-organisms or bound to organic and/or mineral fractions of the soil material. Several studies have investigated the persistence of cyanobacterial toxins in the environment. However, the methods did not enable any conclusions to be made regarding processes influencing adsorption, as the soil properties were not quantified and toxin recovery methods from soil particles were not validated. A detailed understanding of the factors that influence the fate of a particular contaminant is required to enable the assessment of the efficiency of bank filtration as a removal strategy for cyanobacterial toxins. More specifically, the purpose of this study was to: examine the type of adsorption processes occurring with microcystin-LR and nodularin in a wide range of soils; to determine water quality parameters influencing adsorption; and, to assess the potential for soil microflora to degrade the toxins. Includes 16 references, tables, figures.
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发布单位或类别: 美国-美国给水工程协会
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