Prospective performance assessment of enhanced electrochemical oxidation technology: Insights into fundamentals and influencing factors for reducing energy requirements in industrial wastewater treatment

IF 6.7 2区环境科学与生态学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Environmental Technology & Innovation Pub Date : 2023-08-17 DOI:10.1016/j.eti.2023.103336

Roya Mehrkhah, So Yeon Park, Jun Hee Lee, Sun Young Kim, Byoung Ho Lee

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Abstract

Electrochemical oxidation (ECO) is a promising process that exhibits excellent performance in various wastewater treatment applications. Herein, the influence of operating parameters on the reduction of energy requirements for the electrochemical oxidation of various wastewater resources was investigated. The results revealed that pH significantly reduces the energy required for the removal of total nitrogen, unlike the chemical oxygen demand (COD) and NH₃ removal. Electrochemically-based hybrid technologies and low current densities also resulted in a decrease in the required energy. Additionally, pollutants with high concentrations had a positive effect on the electrical energy required. Besides, the comparative performance of three advanced electrochemical oxidation processes was reported as technological alternatives for the treatment of reverse osmosis (RO) concentrate applied to membrane bioreactor (MBR) effluent in livestock wastewater. The results revealed that advanced electrochemical oxidation-peroxide is the most effective process for treating RO concentrate among all advanced ECO technologies. The removal rates for total organic carbon (TOC) and COD were 82% and 96%, respectively, after only 60 min of treatment.

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强化电化学氧化技术的前瞻性性能评估:对工业废水处理中降低能源需求的基本原理和影响因素的见解

电化学氧化（ECO）是一种很有前途的工艺，在各种废水处理应用中表现出优异的性能。在此，研究了操作参数对降低各种废水资源的电化学氧化所需能量的影响。结果表明，与化学需氧量（COD）和NH3去除不同，pH显著降低了去除总氮所需的能量。基于电化学的混合技术和低电流密度也导致所需能量的减少。此外，高浓度的污染物对所需的电能有积极影响。此外，还报道了三种先进的电化学氧化工艺的比较性能，作为反渗透（RO）浓缩物处理膜生物反应器（MBR）废水的技术替代方案。结果表明，在所有先进的ECO技术中，先进的电化学氧化过氧化物是处理RO浓缩物最有效的工艺。处理60min后，总有机碳（TOC）和COD的去除率分别为82%和96%。

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来源期刊

Environmental Technology & Innovation Environmental Science-General Environmental Science

CiteScore

14.00

自引率

4.20%

发文量

435

审稿时长

74 days

期刊介绍： Environmental Technology & Innovation adopts a challenge-oriented approach to solutions by integrating natural sciences to promote a sustainable future. The journal aims to foster the creation and development of innovative products, technologies, and ideas that enhance the environment, with impacts across soil, air, water, and food in rural and urban areas. As a platform for disseminating scientific evidence for environmental protection and sustainable development, the journal emphasizes fundamental science, methodologies, tools, techniques, and policy considerations. It emphasizes the importance of science and technology in environmental benefits, including smarter, cleaner technologies for environmental protection, more efficient resource processing methods, and the evidence supporting their effectiveness.