%0 Journal Article
%T Evaluation of sequential inactivation of Bacillis subtilis spores in drinking water with ozone and chlorine<br>臭氧-氯联合灭活饮用水中枯草芽孢杆菌芽孢的研究
%A Geng Shujie
%A Hu Xuexiang
%A Hu Chun
%A <br>耿淑洁
%A 胡学香
%A 胡春
%J 环境工程学报
%D 2011
%I 
%X The inactivation effect of Bacillis subtilis (B. subtilis) spores with individual chlorine disinfection, individual zone disinfection and sequential disinfection with ozone followed by free chlorine, was examined in natural water samples. Results show that B. subtilis spores were highly resistant to free chlorine disinfection. Only 0.84 log reduction was achieved by chlorine when initial chlorine concentration was 6 mg/L and contact time was 240 min. Ozone disinfection is more effective than chlorination. At contact time of 5 min, ozone disinfection results in 4.68 log reduction. Up to 7.1 log reduction was achieved with 2 min ozone pretreatment followed by 6 mg/L chlorine, which is much higher than the sum of inactivation rate of zone and chlorine disinfection individual. The effect of the combined applications of ozone and chlorine in inactivating B. subtilis spores is a kind of synergistic effect, which is enhanced with the increase of the level of ozone pretreatment.
%K ozone
%K chlorine
%K B
%K spores
%K sequential inactivation
%K synergistic effect<br>臭氧
%K 氯枯草芽孢杆菌
%K 芽孢联合消毒
%K 协同作用
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=92E6F4267FD4CBCB51B1E49E014D8054&jid=3567BD61129AA59043F5DE01F8815DB5&aid=2C94ED762E62FD10582D88BED5D63AA9&yid=9377ED8094509821&vid=94C357A881DFC066&iid=38B194292C032A66&sid=F176272DD933A0BB&eid=8C267C8DC97FEEEF&journal_id=1673-9108&journal_name=环境工程学报&referenced_num=0&reference_num=0