摘要
臭氧生物活性炭工艺已经成为主要的饮用水深度处理技术之一,在国内外得到了应用,但是在运行中也陆续发现了一些新的水质问题,成为威胁饮用水水质安全的潜在因素.针对以上问题,对生产规模的臭氧生物活性炭组合工艺(60万m3/d)进行了系统调查研究,包括微生物安全性、水生动物过度滋生和化学稳定性等,期间并结合中试(10 m3/h)进行了研究.结果表明,臭氧生物活性炭技术在微生物安全方面是可靠的,应加强运行管理;臭氧生物活性炭工艺在运行过程中,会孳生大量的水生动物,这在我国高温高湿热地区更为显著,而且水生动物生长具有一定规律性,影响水质安全;在原水碱度低的情况下,臭氧生物活性炭工艺出水pH值会出现大幅下降现象,严重影响了水质化学稳定性.
Ozonation and biologically activated carbon process, one of advanced treatment technologies, has been applied in many places at home and abroad. However, some emerging water quality problems appeared in operation. Drinking water treatment plant （6× 10^5m^3/d） with ozonation and biologically activated carbon process （03-BAC process） was investigated systematically, including microbial safety, the excessive growth of aquatic microorganism and chemical stability of water quality. And some experiments were done in the pilot plant （10 m3/h） at the same time. O3-BAC process is reliable in microbial safety, but operation management should be enhanced. A good number of aquatic microorganisms grow immoderately during operation of O3-BAC process, which is more serious especially in place with high temperature and humidity. With prolong of runtime, the growth of aquatic microorganisms varies regularly. That is hazardous to water quality safety. When raw water is low with alkalinity, decrease of pH in O3-BAC process is obvious. That wilt seriously affect on chemical stability.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2009年第11期3311-3315,共5页
Environmental Science
基金
"十五"国家重大科技专项(2002AA601120)
关键词
饮用水
水质安全
微生物安全性
水生动物
化学稳定性
drinking water
water quality safety
microbial safety
aquatic microorganism
chemical stability
