O_3/H_2O_2法灭活水中剑水蚤类浮游动物  

O_3/H_2O_2 Oxidation Processes of Cyclops of Zooplankton Inactivation in Water

作　　者：崔福义[1] 吴雅琴[1] 刘冬梅[1] 张敏[1] 

机构地区：[1]哈尔滨工业大学市政环境工程学院,哈尔滨150090

出　　处：《环境科学》2005年第5期89-94,共6页Environmental Science

基　　金：国家'十五'重大科技专项课题(2002AA601140);黑龙江省青年科学基金项目(QC03C17);哈尔滨工业大学校科学基金资助项目(HIT.221.52)

摘　　要：为解决水源水中孳生的水蚤类浮游动物难以被常规的水处理工艺有效地去除,困扰水厂正常生产运行的问题,进行了O3氧化、H2O2氧化和O3/H2O2高级氧化对水体中剑水蚤类浮游动物灭活效果的试验研究.发现3种方法中,O3/H2O2联合时除蚤效果最佳,在蒸馏水中投量为O3 1.0mg/L、K2O2 4mg/L时,接触30min达到100%的灭蚤率;单独O3氧化效果也较好,投加1.0mg/L的灭蚤率为80%;H2O2氧化效果不理想,投加4mg/L几乎无灭蚤效果.进而考察确定了O3/H2O3灭活剑水蚤的最佳工艺条件为:先加O3后加H2O2,投加间隔时间30～60s为宜;并探讨了H2O2投量、水体pH值以及有机物含量对O3/H2O2系统灭活剑水蚤效果的影响.试验中发现H2O2投量在4～10mg/L之间效果无较大变化,有机物含量对灭蚤影响较大,pH值的影响则较小.最后对O3/H2O2预氧化与水处理混凝沉淀工艺的协同除蚤效能进行了考察.结果表明,O3/H2O2预氧化与水处理混凝沉淀工艺的协同作用将会进一步提高除蚤的效果.The inactivation effects of ozone, hydrogen peroxide, O3/H2O2 processes on Cyclops of zooplankton were discussed. It was found that O3/H2O2 possessed more favorable inactivation effect on Cyclops compared with the others, in distilled water with 1.0 mg/L of O3 and 4mg/L of H2O2 the inactivation effect was 100% after 30min contacting; ozone also had favorable inactivation effect, the inactivation effect is 80% by 1.0mg/L of ozone alone; while hydrogen peroxide didn＇t, there was almost no inactivation effect by 4mg/L of H2O2. The best inactivation condition for O3/H2O2 processes, that was, two oxidants were added sequentially with interval in range of 30 to 60 seconds, for them ozone at first. And the influencing factors under various conditions such as the dose of hydrogen peroxide, organic substance content, pH value, etc. were researched and reported. It was found that the effect didn＇t changed largely with H2O2 on the range of 4mg/L to 10 mg/L, and inactivation effects on Cyclops of O3/H2O2 were not sensitive to pH value, while it declined obviously as the organic content increased. Finally, synergic removal effect on Cyclops with O3/H2O2 preoxidation followed by clarification process was investigated. The results show that the removal effect on Cyclops is further strengthened by clarification processes after O3/H2O2 pre-oxidation.

关 键 词：浮游动物 剑水蚤 O3 H2O2 高级氧化 预氧化 

分 类 号：TU991.25[建筑科学—市政工程] X520.5[环境科学与工程—环境工程]