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通过对饮用水中常见的两种不同细菌——琼氏不动杆菌(Acinetobacter junii,革兰氏阴性)和松鼠葡萄球菌(Staphylococcus sciuri,革兰氏阳性)在UFC条件下进行加氯消毒试验,分别测定两种细菌的生长曲线、细菌特性的标准曲线、总有机碳(TOC)、不同消毒时间的耗氯量,分析两种细菌耗氯量之间的差别以及吸光度之间的差别,以此推断DBPs产生量的区别,研究不同的细菌种类是否对消毒副产物的产生具有影响。研究结果表明,两种细菌的耗氯量Dt和吸光度差值ΔUV254都随着TOC浓度的增加和反应时间的延长而增大;细菌的单位耗氯量SDt和单位THM生成势都随着反应时间的延长而增加。
Chlorofluoric acid (CFC) disinfection was performed under UFC conditions on two different bacteria common in drinking water, Acinetobacter junii (Gram-negative) and Staphylococcus sciuri (Gram-positive) The growth curves of the two bacteria, the standard curve of the bacterial properties, the total organic carbon (TOC), the amount of chlorine consumed at different disinfection times, the difference between the two bacteria’s chlorine consumption and the difference in absorbance were measured respectively Inferred the difference between the amount of DBPs produced, to study whether different bacterial species have an impact on the production of disinfection by-products. The results showed that both the Dt and ΔUV254 of the two bacteria increased with the increase of TOC concentration and reaction time. The unit of SDT and unit THM production of bacteria were all increased with the reaction time The increase of the extension.