H_2O_2/O_3协同灭活水中隐孢子虫影响因素研究  

Synergistic Effect of H_2O_2/O_3 on the Inactivation of Cryptosporidium parvum in Water

作　　者：李金玉[1] 冉治霖[2] 

机构地区：[1]广东轻工职业技术学院环境工程系,广州510300 [2]深圳信息职业技术学院交通与环境学院,深圳518172

出　　处：《长江科学院院报》2013年第9期17-21,共5页Journal of Changjiang River Scientific Research Institute

基　　金：广东省自然科学基金(S2012040007855)

摘　　要：开展了H2O2/O3灭活隐孢子虫(Cryptosporidium parvum)的研究。考察了H2O2和O3投加比例、过氧化氢作用效果、无机金属离子等因素的影响。结果表明,H2O2/O3协同技术具有最佳的灭活效果,H2O2的投加不仅降低了药剂(O3)的初始浓度(投量2.0mg/L),而且缩短了灭活时间(7.0 min),达到理想的灭活效果(灭活率99.0%以上)时,H2O2/O3摩尔比为0.8;同时考察了水中常见离子对H2O2/O3灭活效果的影响,低浓度的Ca2+,Mg2+和Cu2+等二价金属离子均对灭活起到一定促进作用,一价离子Na+对灭活无明显的作用,而NO-3,HCO-3和Cl-在一定范围内抑制了H2O2/O3对隐孢子虫的灭活。In order to research the synergistic effect ofH2O2/O3 inactivating Cryptosporidium parvum in water, factors including the proportions of H2O2 and O3 , the effect of hydrogen peroxide, and the inorganic metal ion were in- vestigated by using fluorescence staining method. It could achieve the desired inactivation of Cryptosporidium par- vum（ inactivation rate above 99.0% ）. H2O2 not only reduces the initial concentration of bactericide （03 dosage of 2.0 mg/L） , but also shortens the sterilizing time （7.0 min）. The best H2O2/O3 molar ratio is 0.8. Common ions in water, such as divalent metal ions Ca^2＋ , Mg^2＋ and Cu^2＋ play catalytic roles in the inactivation, while Na ＋ has no obvious effect on the inactivation, and NO3^- , HCO3^- and Cl^ - restrain the inactivation of Cryptosporidium parvum to some extent.

关 键 词：隐孢子虫 H2O2 O3 饮用水 灭活 

分 类 号：TU991.25[建筑科学—市政工程]