摘要
采用生物膜培养反应器(RAB)模拟给水管网系统,比较了氯胺和亚氯酸盐对氨氧化菌(AOB)和异养菌的灭活效果.结果表明,亚氯酸盐对水中和生物膜中AOB的灭活效率均高于氯胺,1.5mg/L氯胺对水中和生物膜中AOB的灭活速率分别为5.7×10-2log/h和4.8×10-2 log/h;而0.6mg/L的亚氯酸盐对水中和生物膜中AOB的灭活速率分别为7.2×10-2 log/h和6.4×10-2 log/h,远高于氯胺的灭活效果;亚氯酸盐与氯胺联用对AOB的灭活效果与单独亚氯酸盐作用效果相当;亚氯酸盐对悬浮态和附着态的异养菌均没有灭活作用,氯胺对水中和生物膜中异养菌的灭活速率分别为8.3×10-2 log/h和5.5×10-2 log/h;采用亚氯酸盐和氯胺联合作用可有效控制硝化作用.
The inactivation effect of chloramine, chlorite for ammonia-oxidizing bacteria and hetero- trophic bacteria was compared by using rotating annular bioreactors （RAB）, which were applied to simu- late the drinking water distribution system. The experiment results showed that 1.5 mg/L chloramine had a higher inactivate rate to AOB in bulk water （5.7 × 10-2 log/h） than in the biofilm （4.8× 10-2log/h） dur- ing 24 h. Compared with chloramine, 0.6 mg/L chlorite had a much higher inactivation rate to AOB in the biofilm （6.4×10-2 log/h） and bulk water （7.2× 10-2 log/h）. Chlorite and hybrid of chlorite and chlora- mine disinfection had almost the same inactivation efficiency, and chlorite had no inactivation effect on het- erotrophic in the biofilm and bulk water. The inactivation rate of chloramine on heterotrophic bacteria was 8.3× 10-2 log/h and 5.5 ×10-2 log/h respectively. Based on chlorite inactivation effect on AOB and chlo- ramine on heterotrophic bacteria, the hybrid disinfection of chloramine and chlorite on the controlling of nitrification was put forward.
出处
《湖南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2012年第6期69-73,共5页
Journal of Hunan University:Natural Sciences
基金
国家自然科学基金资助项目(51178323
51108329)
中国博士后科学基金资助项目(20100480626)
江苏省自然科学基金资助项目(BK2011323)
关键词
氯胺
亚氯酸盐
异养菌
氨氧化菌
模拟给水管网
chloramines
chlorite
heterotrophic bacteria
ammonia-oxidizing bacteria
simulated
