基于水厂芽孢杆菌及芽孢具有强耐氯性,饮用水的安全性问题存在隐患,研究了不同氧化剂、氧化剂和紫外线联用及氧化剂和陶瓷膜联用工艺对水厂原水和出水中芽孢杆菌及芽孢的灭活工艺.结果表明:NaClO、臭氧、单过硫酸氢钾复合盐均能完全灭活芽孢杆菌及芽孢,其中5 mg/L的臭氧在1 min的反应接触时间即可使芽孢浓度降为0,可以考虑作为水厂处理芽孢渗漏时的应急措施;此外,H2O2能在较短的时间内有效地灭活芽孢杆菌及芽孢,当紫外线与H2O2联用时,紫外线能提升H2O2对芽孢的灭活效果,使芽孢完全灭活;单独使用陶瓷膜时能完全滤除芽孢,当氧化剂(NaClO,H2O2)与陶瓷膜工艺相结合时,可以灭活并完全滤除出水中芽孢,同时降低陶瓷膜的使用负荷并延长陶瓷膜的使用寿命.%The security of the drinking water faces some problems due to the strong resistance of bacillus spores to chlorine in waterworks.To solve these problems,we explored an inactivation process of bacillus spores by different oxidants,oxidants in conjunction with ultraviolet (UV) and oxidants combined with ceramic membrane for raw water and product water in waterworks.The results show that NaClO,ozone and potassium peroxymonosulfate could completely inactivate Bacillus spores.Among them,5 mg/L of ozone in 1 minute of reaction contact time could reduce spores' concentration to 0.Therefore,it could be considered as an emergency measure of waterworks when handling spore leakage.Moreover,H2O2 could effectively inactivate Bacillus spores in a relatively short period of time.When UV and H2O2 were combined,UV ray could improve H2O2's inactivation effect,leading to complete inactivation of Bacillus spores.Ceramic membrane craft alone could completely filter out spores.Combination of oxidants (NaClO,H2O2) and ceramic membrane technology not only could inactivate and completely filter out Bacillus spores in the water,but also reduced the use load of ceramic membrane and prolong the service life of ceramic membrane.
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