河道水旁路处理中试工艺中PPCPs的去除效果及机制  

Mechanisms and Efficiencies of Removal of PPCPs by Pilot River Water Bypass Treatment Process

作　　者：李力 朱栟 白瑶 赵健 曹之淇 郭泓利 李凌云 左剑恶[1] LI Li1,2, ZHU Bing2 , BAI Yao2 , ZHAO Jian2 , CAO Zhi-qi2 , GUO Hong-li2 , LI Ling-yun2 , ZUO Jlan-e＂ 1.(1. State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China; 2. Beijing Enterprises Water Group （China） Investment Limited, Beijing 100102, China)

机构地区：[1]清华大学环境学院环境模拟与污染控制国家重点实验室,北京100084 [2]北控水务(中国)投资有限公司,北京100102

出　　处：《环境科学》2018年第4期1637-1644,共8页Environmental Science

基　　金：国家水体污染控制与治理科技重大专项(2017ZX0710005;2017ZX0710007);北京市科技计划项目(D161100000216001)

摘　　要：城市河道水中含有微量药物及个人护理品(pharmaceuticals and personal care products,PPCPs),具有一定生态风险.本文系统考察了两种河道水旁路处理工艺(混凝沉淀-曝气生物滤池-超滤-臭氧和混凝沉淀-膜生物反应器-臭氧)对30种高检出PPCPs的去除效果,并通过沿程去除率调查和风险商模型分别评价了目标PPCPs的降解机制及整体生态风险的降低情况.结果表明,两种旁路处理工艺对各目标PPCPs均有较好去除效果;其中四环素类抗生素及咖啡因在生物段去除率超过90%,而磺胺类及氟喹诺酮类抗生素及其他药物仅在进水化学需氧量较高和较高水温条件下具有较好去除效果,但臭氧深度处理可对其进行有效削减;经全流程处理后各PPCPs累积去除率均可达92.5%以上.旁路处理可有效降低目标PPCPs生态风险,经处理后风险商值由原水的12.6降至总出水的0.2(风险阈值RQ_(tot)=1),去除率达98.4%.The pharmaceuticals and personal care products（ PPCPs） released into urban rivers are triggering certain ecological risks.The current study investigated the removal efficiencies of 30 frequently detected PPCPs by two river water bypass treatment processes（ CS-BAF-UF-Ozone and CS-MBR-Ozone）,and investigated the removal mechanism and eco-toxicological risk variation of target compounds via section-removal investigation and risk quotient model,respectively. Results indicated that both processes could efficiently remove the target PPCPs; the removal rates of tetracyclines and caffeine were 90% in the biological sections,while sulfonamides,fluoroquinolones,and other pharmaceuticals could only be efficiently removed when the COD of the influent and the water temperature were comparatively higher; the ozone process had particular effect on removing these compounds. The cumulative removal rate of all PPCPs during the whole process was higher than 92. 5%. The total risk quotient（ RQtot） of target PPCPs could be efficiently reduced by the bypass treatment processes; the RQtot decreased from 12. 6 in the influent river water to 0. 2 in the ozone effluent,with a removal rate of 98. 4%.

关 键 词：药物及个人护理品(PPCPs) 河道水旁路处理 生态风险 生物处理 臭氧 

分 类 号：X522[环境科学与工程—环境工程]