饮用水处理中臭氧化副产物生成与控制研究  

The Study of Ozonation by-Products Formation and Control During the Drinking Water Treatment

作　　者：王永京[1] 杨凯[2] 于建伟[2] 韩珀 沙净 李涛 

机构地区：[1]北京工商大学食品学院环境科学与工程系,北京100048 [2]中国科学院生态环境研究中心环境水质学国家重点实验室,北京100852 [3]郑州自来水投资控股有限公司,河南郑州450013

出　　处：《水处理技术》2016年第6期90-93,97,共5页Technology of Water Treatment

基　　金：北京工商大学青年基金(QNJJ2014-12);青年教师创新团队项目(PXM2013_014213_000106);国家科技支撑计划(2014BAC27B00);学科建设-重点学科-环境工程(PXM2014_014213_000037)

摘　　要：以含溴黄河水为水源,利用中试连续实验,评价臭氧-生物活性炭（O3-BAC）深度处理工艺对COD（Mn）及嗅味的去除效果,重点研究了臭氧氧化过程中溴酸盐、甲醛等副产物的生成与控制效果。研究发现,O3-BAC工艺能有效降低COD（Mn）和嗅阈值（TON）,在不同水质条件下,臭氧量为2.0 mg/L时溴酸盐的生成量存在超标风险（10μg/L）,且导致甲醛大量生成,为29.07μg/L。投加过氧化氢能够有效控制溴酸盐,当氧消耗量为3.0 mg/L以下时,H2O2为2.0-3.0 mg/L能将溴酸盐控制在标准内,投加H2O2对甲醛生成产生一定影响,随着H2O2投加量增加,甲醛生成量先增加后又有所降低。In this study, a pilot-scale experiment was carried out to evaluate the effect of ozonation-biological activated carbon（O3-BAC） on the COD（Mn） and threshold odor numbers（TON） in treating bromide containing Huang River water, especially focusing on the bromate and formaldehyde formation and control. Results indicated that O3-BAC improved the performance in degradation of COD（Mn）and TON, but the bromate concentration would be higher than the standard（10 μg/L） as the ozone dose was above 2.0 mg/L, which also formed much formaldehyde（29.07 μg/L）. H2O2 addition could reduce the bromate formation. As the ozone doses were under 3.0 mg/L, 2.0-3.0 mg/L of H2O2 would be enough for bromate control. The addition of H2O2 could affect the formation of formaldehyde simultaneously, the concentration of which increased firstly and then decreased as the H2O2 doses increased.

关 键 词：臭氧-生物活性炭 溴酸盐 甲醛 过氧化氢 

分 类 号：TU991.25[建筑科学—市政工程]