污水处理厂内PPCPs赋存情况及去除因素分析

Occurrence and removing factors of pharmaceuticals and personal care products in sewage treatment plants

药品及个人护理用品(PPCPs)在环境中普遍被检出,并被报道能够对环境产生不良效应,已引起全球的广泛关注。污水处理厂(STPs)是PPCPs的重要污染源之一,同样也是集中去除该类污染物的关键途径。STPs内PPCPs的进水质量浓度可达μg/L量级,出水质量浓度多为ng/L量级。PPCPs自身的理化生性质和STPs的运行参数(温度、pH、HRT、SRT、系统中微生物)会对PPCPs的去除产生一定的影响。

Pharmaceuticals and personal care products （PPCPs） have widely been detected in surface water, groundwater, and drinking water, as well as in agricultural soils and bio-solid. Public interest is quickly increasing because of their potential impact on the environments. Sewage treatment plants （STPs） are regarded as one of the most important sources of PPCPs, also identified as the major approach for the removal of such contaminants. The influent mass concentration of PPCPs in STPs is up to μg/L,while effluent mass concentration is mostly μg/L. The removing efficiencies of PPCPs in STPs could be affected by the physico-chemical and biological properties of PPCPs and the operating parameters of STPs （such as temperature,pH, hydraulic retention time, sludge retention time and microorganisms in bio-treatment system）.