Removal of municipal wastewater effluent toxicity and formation of transformation products of trace organic contaminants after electrochemical oxidation treatment

废水中大量有机污染物的存在需要越来越有效的技术**来避免对地表和沿海水域的污染。在过去的20年里，废水中存在微量有机污染物(TOCs)，如药品和个人护理产品，这促使人们**研究能够降低**城市污水中这些污染物浓度的新的废水处理工艺。由E2Metrix开发的ECOTHOR-W技术是一项很有前途的技术，可以**去除工业废水中的各种污染物，如脂肪、油脂、痕量金属、总悬浮固体，甚至大肠菌群。E2Metrix希望探索将其旗舰技术应用于**城市废水处理，并希望测量城市废水中经常报告的**TOCs转化产物的形成情况。此外，它还对处理后的流出物对水生生物的毒性感兴趣。在这里，我们提出了一个与E2Metrix密切合作的为期6个月的项目，**通过测量转化产物的形成**和测量处理后废水的整个出水毒性来确定城市废水电化学处理的最佳参数。通过这种方式，ECOTHOR-W技术将不会产生不需要的转化产物，并且废水的毒性**将以最少的能源使用得到极大的降低。我们将采取双重策略，使我们**能够在适当的时候实现这一目标：1)使用基于高效液相色谱和**高分辨率质谱仪的方法，测量**经常报告的痕量有机污染物的主要转化产物的形成；2)使用我的团队最近开发的以水蚤(D.Magna)为**测试生物体的灵敏分析方法，比较经过电化学处理和未经处理的**市政污水的毒性。该项目将优化ECOTHOR-W技术，这将改善**城市污水的质量，减少其对环境的负面影响。此外，我们的工作将使**E2Metrix有机会扩展到城市污水处理厂市场，并在加拿大创造新的就业机会。

The presence of a multitude of organic contaminants in wastewaters requires increasingly efficient technologies**to avoid contamination of surface and coastal waters. In the last 20 years, the presence of trace organic**contaminants (TOCs) such as pharmaceuticals and personal care products in wastewaters has stimulated**research for new wastewater treatment processes able to reduce the concentration of those contaminants in**municipal sewage. The ECOTHOR-W technology, developed by E2Metrix, is a promising technology for the**removal of diverse contaminants from industrial wastewaters such as of fats, oils and grease, trace metals, total**suspended solids, and even coliforms. E2Metrix wishes to explore the application of its flagship technology to**the treatment of municipal wastewaters and desires to measure the formation of transformation products of**TOCs frequently reported in urban wastewaters. Also, it is interested in the toxicity of the treated effluents**towards aquatic organisms. Here we propose a 6-month project in close collaboration with E2Metrix to**determine optimal parameters for the electrochemical treatment of municipal wastewaters by measuring the**formation of transformation products and measuring the whole effluent toxicity of the treated wastewater. In**that way, the ECOTHOR-W technology will not produce of unwanted transformation products and the toxicity**of the effluent will be greatly reduced with minimal use of energy. We will adopt a two-fold strategy that will**allow us to attain that objective in due time: 1) Measure the formation of major transformation products of**frequently reported trace organic contaminants using a method based on liquid chromatography and**high-resolution mass spectrometry 2) Compare the toxicity of electrochemically treated and untreated**municipal effluents using a sensitive assay recently developed by my group that uses water fleas (D. magna) as**test organism. This project will optimize ECOTHOR-W technology, which will could ameliorate the quality of**municipal effluents and reduce their negative impact the environment. Additionally, our work will give**E2Metrix the opportunity to expand to the municipal wastewater plant market and create new jobs in Canada.