微纳米气泡臭氧氧化对剑水蚤和圆水蚤的灭活效能及机理分析  

Efficacy and Mechanism Analysis of Micro-Nano Bubble Ozonation for Cyclops and Daphnia Inactivation

作　　者：唐煜坤 马健伟[1] 于忠臣[1] 于清江 TANG Yukun;MA Jianwei;YU Zhongchen;YU Qingjiang(School of Civil Engineering and Architecture,Northeast Petroleum University,Daqing 163319,China;Daqing City Water Group Co.,Ltd.,Daqing 163319,China)

机构地区：[1]东北石油大学土木建筑工程学院,黑龙江大庆163319 [2]大庆市水务集团有限公司,黑龙江大庆163319

出　　处：《净水技术》2023年第11期67-75,119,共10页Water Purification Technology

基　　金：国家自然科学基金(51606036);黑龙江省自然科学基金联合引导项目(LH2022E022)。

摘　　要：大庆市某水厂水库原水存在季节性污染、夏季富营养化严重,以及原水中剑水蚤、圆水蚤等浮游动物大量孳生的问题,以水厂现有的臭氧氧化工艺对剑水蚤和圆水蚤去除效果极不理想。文章研究了微纳米气泡臭氧及活性炭催化微纳米气泡臭氧体系对两种水蚤的灭活效果,并对灭活机理进行了分析。结果显示:在相同的臭氧投加量下,微纳米气泡臭氧比普通气泡臭氧灭活速度和灭活效果都有明显的提升,受水中有机物含量的影响较小,另外对持续灭活水蚤的能力也有明显的提高。微纳米气泡臭氧灭活水蚤的最佳液相质量浓度为1.5 mg/L,处理25 min对两种水蚤都可以达到100%的灭活率;处理5 min后停止曝气,30 min后对剑水蚤和圆水蚤的持续灭活率分别提升了28.5%和25.3%,而普通气泡仅提升了6.6%和8.8%。另外,试验还发现,活性炭催化微纳米气泡臭氧体系可提高对水蚤的灭活速度,对水蚤灭活率也有一定的提升。There are seasonal pollution,serious eutrophication in summer,and large number of zooplankton such as water flea in raw water of a reservoir in Daqing City.The existing ozone oxidation process in a water treatment plant(WTP)in Daqing City has very poor effect on the removal of Cyclops and Daphnia.The article investigated the inactivation effect of micro-nano bubble ozone and activated carbon catalyzed micro-nano bubble ozone system on two species of water flea and analyzed the inactivation mechanism.The results showed that the inactivation rate and effect of micro-nano bubble ozone were significantly higher than those of ordinary bubble ozone at the same ozone dosage,and were less affected by the organic matter content in water,and the ability of continuous inactivation of water flea was also significantly improved.The optimal liquid phase concentration of micro-nano bubble ozone inactivation of water flea was 1.5 mg/L,and the inactivation rate of both water flea species could be 100%after 25 min of treatment;after 5 min of treatment and stopping aeration,the sustained inactivation rates of Cyclops and Daphnia after 30 min were increased by 28.5%and 25.3%,respectively,while those of ordinary bubbles were only increased by 6.6%and 8.8%.It was also found that the activated carbon catalyzed micro-nano bubble ozone system could improve the inactivation rate of water flea and the inactivation rate of water flea.

关 键 词：微纳米气泡 臭氧氧化 剑水蚤 圆水蚤 灭活 

分 类 号：TU991[建筑科学—市政工程]