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Quantifying the electron-donating and-accepting capacities of wastewater for evaluating and optimizing biological wastewater treatment processes

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Journal of Environmental Sciences 2021年第4期33卷 235-243页

作者： Xian-Bin Ying Chen-Yi Tang Wei Guo Dong-Shen Sheng Mei-Zhen Wang Hua-Jun Feng Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling School of Environmental Science and EngineeringZhejiang Gongshang UniversityHangzhou 310012China

Biological processes have been widely used for the treatment of both domestic and industrial *** such biological processes,pollutants are converted into pollution-free substances by microorganisms through oxidation-reduction ***,how to quantify the internal oxidation-reduction properties wastewaters and seek out targeted countermeasures is essential to understand,operate,and optimize biological wastewater treatment *** far,no such approach is available *** this work,a novel concept of electron neutralization-based evaluation is proposed to describe the internal oxidation-reduction properties of *** in wastewater are defined as electron donor substances(EDSs)or electron acceptor substances(EASs),which could give or accept electrons,*** such an electron neutralization concept,several parameters,i.e.,electron residual concentration(R),economy-related index(E and E r),and economical evaluation index(Y and Y r),are ***,these parameters are used to evaluate the performance and economic aspects of currently applied wastewater treatment processes and even optimize *** case studies demonstrate that the proposed concept could be effectively used to reduce wastewater treatment costs,assess energy recovery,and evaluate process ***,a new,simple,and reliable methodology is established to describe the oxidation-reduction properties of wastewater and assess the biological wastewater treatment processes.

关键词： Electron donor substances Electron acceptor substances Electron neutralization Electron residual concentration economy-related index Economical evaluation index

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