Effects of process parameters on the degradation of high salinity industrial wastewater

Author:

Li Zhishen1,Gao Xiaolei1,Miao Dongtian1,Yang Wanlin1,Xie Yuanquan1,Ma Li1,Wei Qiuping1

Affiliation:

1. State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University, Changsha 410083, China

Abstract

Abstract High salinity wastewater is characterized by high salt content, a large number of organic pollutants and difficulty in biochemical degradation, which has become a major problem in industrial wastewater treatment. In this article, the electrochemical oxidation technology was used to treat high salinity wastewater. The effects of temperature, current density, pH and additives on the removal effect of high salinity wastewater were investigated to optimize the process parameters. The results show that the best degradation effect is when the current density is 21.43 mA cm−2, pH = 2, the temperature is 60 °C, and electric field activates additional persulfate. After purification of high salt wastewater, the evaporated salt can be utilized as a resource. The industrial cost of degradation was estimated, and its economic benefits were calculated. This work will provide a theoretical and experimental basis for treating high salt wastewater by boron-doped diamond (BDD) electrochemical degradation technology.

Funder

the National Key Research and Development Program of China

the National Natural Science Foundation of China

Key Research and Development Program of Guangdong Province

the Natural Science Foundation of Hunan Province

Publisher

IWA Publishing

Subject

Water Science and Technology

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