Disinfection for Removal of Zooplankton with Chlorine Dioxide

2010 4th International Conference on Bioinformatics and Biomedical Engineering Pub Date : 2010-06-18 DOI:10.1109/ICBBE.2010.5516154

Tao Lin, S. Fan, Wei Chen

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引用次数: 1

Abstract

The disinfection effect of Copepod of zooplankton with chlorine dioxide was compared with that of chlorine. The experimental results showed that chlorine dioxide was more effective to kill Copepod. Copepod was completely killed by 1.0mg/L of chlorine dioxide for contacting 30 min but the required dosage were about 2.0mg/L of liquid chlorine. The body structure variety of Copepod indicated that the direct oxidation on structure surface was the main reason for chlorine dioxide causing the death of Copepod. As for chlorine, disinfection of Copepod mainly depended on hypochlorous acid (HOCl) permeation to destroy inner cellular protein. The exterior factors of organic precursors and temperature had a negative influence on disinfection rate of Copepod. There was high oxidizability and prone selectivity to kill Copepod during chlorine dioxide. Therefore, the disinfection effect of chlorine dioxide may be less influenced by extraneous factors than that of chlorine. The GC-MS examination showed that the sort and amount of organic substances in treated water by chlorine dioxide were less than that by chlorination.

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二氧化氯消毒去除浮游动物

比较了二氧化氯和氯对浮游动物桡足类的消毒效果。实验结果表明，二氧化氯对桡足类动物的杀伤效果较好。1.0mg/L的二氧化氯可使桡足类接触30 min，但所需液氯用量约为2.0mg/L。桡足类动物身体结构的变化表明，结构表面的直接氧化是二氧化氯导致桡足类动物死亡的主要原因。氯方面，桡足类动物的消毒主要依靠次氯酸(HOCl)渗透破坏细胞内蛋白质。有机前体和温度等外部因素对桡足类动物的消毒率有不利影响。在二氧化氯作用下，桡足类动物具有较高的氧化性和选择性。因此，与氯相比，二氧化氯的消毒效果受外来因素的影响较小。气相色谱-质谱分析表明，二氧化氯处理后的水中有机物的种类和数量比氯化处理后的水少。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2010 4th International Conference on Bioinformatics and Biomedical Engineering

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