摘要
分别利用酵母双杂交和umu试验对5个城市9个污水处理厂进出水中生物遗传毒性和视黄酸受体(RAR)结合活性进行了调查,并考察了臭氧氧化对这两种生物效应的去除效果.结果表明,城市污水中存在不同程度的生物遗传毒性和视黄酸受体(RAR)结合活性,通过生物处理可以大幅削减污水中的RAR结合活性和生物遗传毒性,但污水厂出水中仍然普遍具有遗传毒性,部分残留RAR结合活性.5～10mg·mL-1的臭氧可以有效削减二级出水中残留的RAR结合活性和遗传毒性,是一种有效的提高水质安全性的污水深度处理技术.
The agonistic activity of retinoic acid receptor（RAR） and the genotoxicity induced by the influent and effluent from 9 sewage treatment plants （STPs） in different cities were investigated, and the efficiency of ozonation for the removal of the toxicity was evaluated. Raw sewage contains relatively high RAR agonistic activity and genotoxicity. Traditional biological treatment reduces the RAR agonistic activity and genotoxicity, but all of the investigated secondary effluents were still genotoxic, while the effluents from some plants still bad weak RAR agonistic activity. Ozonation at an ozone dose of 5 - 10 mg· L^-1（in consumption base） almost completely removed the RAR agonistic activity and genotoxicity.
出处
《环境科学学报》
CAS
CSCD
北大核心
2009年第4期747-753,共7页
Acta Scientiae Circumstantiae
基金
天津市科技创新专项资金和中科院配套经费资助(No.TJZX1-YW03,06FZZDSH00900)
国家“十一五”水专项(No.2008ZX07314-003)~~
关键词
污水回用
RAR结合活性
生物遗传毒性
臭氧
wastewater reclamation
RAR agonistic activity
genotoxicity
ozonation
