Department of Environmental Engineering, Bursa Technical University, Bursa, Turkiye.
Department of Agricultural & Biological Engineering, Purdue University, West Lafayette, IN, 47906, USA.
Environ Pollut. 2023 Aug 1;330:121680. doi: 10.1016/j.envpol.2023.121680. Epub 2023 May 4.
The presence of toxic pollutants in wastewater discharge can affect the environment negatively due to presence of the organic and inorganic contaminants. The application of the electrochemical process in wastewater treatment is promising, specifically in treating these harmful pollutants from the aquatic environment. This review focused on recent applications of the electrochemical process for the remediation of such harmful pollutants from aquatic environments. Furthermore, the process conditions that affect the electrochemical process performance are evaluated, and the appropriate treatment processes are suggested according to the presence of organic and inorganic contaminants. Electrocoagulation, electrooxidation, and electro-Fenton applications in wastewater have shown effective performance with high removal rates. The disadvantages of these processes are the formation of toxic intermediate metabolites, high energy consumption, and sludge generation. To overcome such disadvantages combined ecotechnologies can be applied in large-scale wastewater pollutants removal. The combination of electrochemical and biological treatment has gained importance, increased removal performance remarkably, and decreased operational costs. The critical discussion with depth information in this review could be beneficial for wastewater treatment plant operators throughout the world.
废水中有毒污染物的存在由于有机和无机污染物的存在会对环境产生负面影响。电化学工艺在废水处理中的应用具有广阔的前景，特别是在处理这些来自水生环境的有害污染物方面。本综述重点介绍了电化学工艺在修复水生环境中此类有害污染物方面的最新应用。此外，还评估了影响电化学工艺性能的工艺条件，并根据有机和无机污染物的存在提出了适当的处理工艺。电絮凝、电氧化和电芬顿在废水处理中的应用表现出了很高的去除率和有效性。这些过程的缺点是会形成有毒的中间代谢物、能耗高和产生污泥。为了克服这些缺点，可以应用组合式生态技术来去除大规模的废水中的污染物。电化学和生物处理的结合已经得到了重视，显著提高了去除性能，并降低了运营成本。本文深入讨论了相关信息，这对全球范围内的废水处理厂操作人员来说可能是有益的。
