Qiao Tiejun, Yu Zhengrong, Zhang Xihui, Au Doris W T
Research Center for Environmental Engineering and Management, Graduate School at Shenzhen, Tsinghua University, Shenzhen, 518055, China.
J Environ Monit. 2011 Nov;13(11):3097-103. doi: 10.1039/c1em10318k. Epub 2011 Oct 10.
Occurrence and fate of pharmaceuticals and personal care products (PPCPs) in drinking water was investigated in southern China. Fifteen and twelve PPCPs were detected with concentrations of 0-36 ng L(-1) in source water and of 0-20 ng L(-1) in treated water, respectively. Four PPCPs were detected with concentrations of approximately 1 ng L(-1) in drinking water of distribution network. Conventional water treatment processes removed the types and average concentrations of PPCPs by 30% and above 50%, respectively. Advanced water treatment processes were more efficient in the removal of most PPCPs, with the types and concentrations reduced by 50% and approximately 90%, respectively. Molecular properties of PPCPs had an important influence on their behaviors during water treatment. pK(a) (acidity coefficient) and K(oc) (organic carbon partition coefficient) of PPCPs appeared to have a combined effect on PPCPs removal during coagulation and oxidation. Adsorption and biodegradation were two possible mechanisms responsible for PPCPs removal during sand filtration.
对中国南方地区饮用水中药物和个人护理用品（PPCPs）的存在情况及归宿进行了调查。分别在原水和处理后水中检测到15种和12种PPCPs，其浓度分别为0 - 36 ng L⁻¹和0 - 20 ng L⁻¹。在配水管网的饮用水中检测到4种PPCPs，浓度约为1 ng L⁻¹。常规水处理工艺分别去除了PPCPs的种类和平均浓度的30%及50%以上。深度水处理工艺在去除大多数PPCPs方面更有效，其种类和浓度分别降低了50%和约90%。PPCPs的分子性质对其在水处理过程中的行为有重要影响。PPCPs的pK(a)（酸度系数）和K(oc)（有机碳分配系数）似乎对混凝和氧化过程中PPCPs的去除有综合影响。吸附和生物降解是砂滤过程中去除PPCPs的两种可能机制。
