污水中新污染物的去除技术研究进展

Research Progress on Removal Technology of Emerging Contaminants in Sewage

水环境中新污染物的存在及其生态危害已受到全球广泛关注。污水中新污染物的去除技术,主要有物理法、化学氧化法和生物法。物理技术主要有活性炭吸附法和膜分离法;化学氧化法降解新污染物的关键是氧化剂的选择;生物降解新污染物的效果主要受处理工艺类型、泥龄、温度、水力停留时间、溶解氧等因素的影响。相比其他技术而言生物降解技术有一定的优势,以生物单元为主体的综合处理过程将成为未来去除新污染物最经济实用的方法。

The existence of emerging contaminants in water environment and their ecological harm have been widely concerned worldwide.The removal technologies of emerging contaminants in sewage mainly include physical method,chemical oxidation method and biological method.Physical technology is mainly activated carbon adsorption method and membrane separation method;The key to degradation of emerging contaminants by chemical oxidation is the choice of oxidant;The effect of biodegradation of emerging contaminants is mainly affected by the treatment process type,hydraulic retention time,mud age,temperature,dissolved oxygen and other factors.Compared with other technologies,biological treatment technology has certain advantages.The comprehensive treatment process with biological units as the main body will become the most economical and practical method to remove emerging contaminants in the future.