Wang Wen-Long, Wu Qian-Yuan, Du Ye, Huang Nan, Lu Yun, Wei Dong-Bin, Hu Hong-Ying
Guangdong Provincial Engineering Research Center for Urban Water Recycling and Environmental Safety, Key Laboratory of Microorganism Application and Risk Control of Shenzhen, Institute of Environment and Ecology, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China.
College of Architecture & Environment, Sichuan University, Chengdu 610000, China.
Huan Jing Ke Xue. 2021 Jun 8;42(6):2573-2582. doi: 10.13227/j.hjkx.202009251.
Emerging trace organic contaminants (TOrCs) have been ubiquitously detected in municipal wastewater. TOrCs show low concentrations but are usually harmful to aquatic biota and recalcitrant to treatments. The advanced treatment of TOrCs is challenged by four main aspects. First, it is hard to qualify the chemical structure and concentrations of TOrCs, which are typically very low. Second, risk assessment results vary with the selection of target-species and toxicity-endpoints, which makes it hard to regulate priority lists and concentration limits. Third, TOrCs account for less than 0.01% of the total organics in wastewater. Thus, TOrCs cannot be selectively and efficiently removed by conventional treatments. Fourth, it is hard to optimize and manage the treatment trains of TOrCs. In this manuscript, a new strategy combing non-targeting TOrC screening and TOrC "fingerprinting" are proposed to overcome the difficulties of quantification and treatment optimization. Based on this, the standards and regulations to control the TOrCs in reclaimed water should be developed on the basis of elimination efficiency rather than concentration.
新兴痕量有机污染物（TOrCs）已在城市废水中被广泛检测到。TOrCs浓度很低，但通常对水生生物有害且难以处理。TOrCs的深度处理面临四个主要方面的挑战。首先，很难确定TOrCs的化学结构和浓度，其浓度通常非常低。其次，风险评估结果因目标物种和毒性终点的选择而异，这使得难以制定优先清单和浓度限值。第三，TOrCs在废水中的总有机物中所占比例不到0.01%。因此，传统处理方法无法选择性且高效地去除TOrCs。第四，很难优化和管理TOrCs的处理流程。在本论文中，提出了一种结合非靶向TOrC筛选和TOrC“指纹识别”的新策略，以克服定量和处理优化方面的困难。基于此，再生水中控制TOrCs的标准和法规应基于去除效率而非浓度来制定。
