本文選題：紫外線 + 過硫酸鈉　； 參考：《基因組學(xué)與應(yīng)用生物學(xué)》2017年11期

【摘要】：為了研究紫外線聯(lián)合消毒的協(xié)同作用,獲得更高效的飲用水不易滅活微生物消毒手段,本研究采用紫外線消毒及過硫酸鈉消毒的方式,研究其對大腸桿菌以及枯草芽孢桿菌的滅活效果,通過平板計(jì)數(shù)法對其滅活效果進(jìn)行定量評估。結(jié)果表明:過硫酸鈉協(xié)同紫外線消毒,對大腸桿菌滅活有明顯效果(紫外光強(qiáng)113.0μW/cm2,過硫酸鈉濃度為0.5 mmol/L情況下照射10 min,滅活率超過6 lg);單獨(dú)過硫酸鈉對枯草芽孢桿菌基本無滅活效果,過硫酸鈉濃度為0.5 mmol/L情況下10 min的滅活率僅為0.98個(gè)對數(shù)級;單獨(dú)紫外線消毒對枯草芽孢桿菌的滅活效果較好,光強(qiáng)為113.0μW/cm2、照射時(shí)間10 min可達(dá)3.48個(gè)對數(shù)級;采用聯(lián)合消毒時(shí),過硫酸鈉與紫外線聯(lián)合消毒在一定程度上對滅活枯草芽孢桿菌有積極影響,最佳情況下可較單獨(dú)UV消毒和單獨(dú)過硫酸鈉消毒分別增加0.90和3.40個(gè)對數(shù)級。紫外過硫酸鈉聯(lián)合消毒有望成為一種高效的飲用水微生物消毒方式,并在給水領(lǐng)域得到廣泛應(yīng)用。
[Abstract]:In order to study the synergistic effect of ultraviolet combined disinfection and to obtain more efficient disinfection methods for drinking water, ultraviolet disinfection and sodium persulfate disinfection were used in this study. The inactivation effect of Escherichia coli and Bacillus subtilis was studied. The results showed that sodium persulfate combined with ultraviolet disinfection, The inactivation rate of Escherichia coli was more than 6 lgg after irradiation with UV intensity of 113.0 渭 W / cm ~ (2) and sodium persulfate concentration of 0.5 mmol/L, while sodium persulfate alone had no inactivation effect on Bacillus subtilis. When the concentration of sodium persulfate was 0.5 mmol/L, the inactivation rate of 10 min was only 0.98 logarithmic grade, the effect of UV disinfection alone on Bacillus subtilis was better, the light intensity was 113.0 渭 W / cm ~ 2, and the irradiation time of 10 min could reach 3.48 logarithmic grade. The combined disinfection of sodium persulfate and ultraviolet radiation had positive effects on the inactivation of Bacillus subtilis to some extent. Under the optimum conditions, the logarithmic levels of 0.90 and 3.40 logarithmic grades were increased respectively compared with those of single UV disinfection and sodium persulfate disinfection alone. Ultraviolet sodium persulfate combined disinfection is expected to be a highly effective disinfection method for drinking water microorganisms, and widely used in the field of water supply.
【作者單位】： 重慶市科學(xué)技術(shù)研究院;重慶交通大學(xué);
【分類號(hào)】：R123.6

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本文編號(hào)：1935730