中文摘要：

隐孢子虫灭活困难,给饮用水安全带来了挑战。实验以枯草芽孢杆菌孢子（ATCC6633）作为隐孢子虫的指示菌,研究了臭氧浓度、浊度、有机物、温度等因素对臭氧灭活枯草芽孢杆菌孢子的影响。研究表明,臭氧对枯草芽孢杆菌孢子的灭活与CT值相关,臭氧浓度对消毒效果影响较小;降低浊度、有机物含量,能提高臭氧对枯草芽孢杆菌孢子的灭活效率;温度降低,为保证一定的消毒效率,所需的CT值越大。研究结果为水厂合理控制运行参数提供了借鉴。

英文摘要：

Cryptosporidium parvum oocysts bring challenges to drinking water safety due to their high resistance to the disinfectants,resulting in great potential harm to public health.This research relates to B.subtilis spores（ATCC 6633）used as a surrogate microorganism to study the impact of turbidity and other water parameters as well as ozone concentration on the inactivation effect.The result showed that ozone inactivation of B.subtilis spores was mainly associated with CT value rather than the concentration of ozone per se,and reduction of turbidity and organic matter in water increased inactivation efficiency.In addition,when water temperature became low it was necessary to increase CT value to ensure the disinfection.