Car Wash Wastewater Treatment Using an Advanced Oxidation Process: A Rapid Technique for the COD Reduction of Water Pollutant Sources

  • Reza Davarnejad Arak University
  • Kasra Sarvmeili Arak University
  • Meysam Sabzehei Arak University
Keywords: Car wash wastewater, electro-fenton, optimization, water quality

Abstract

In this paper, a car wash wastewater (CW) was treated by an economic and eco-friendly method called electro-Fenton (EF) technique. The experiments were conducted to investigate the effect of five important variables including reaction time, current density, pH, H2O2/Fe2+ molar ratio and H2O2/Car wash wastewater (mL/L) on the quality characteristics of wastewater such as COD, BOD5, TOC, TSS, heavy metals, EC, surfactants and hardness. By applying Box-Behnken design (BBD) and response surface methodology (RSM), the optimum operating conditions were obtained. The optimum conditions for COD [as a main factor in a wastewater (according to the environmental protocols)] removal of 68.72% were experimentally found at reaction time of 75.80 min, current density of 58.81 mA/cm2, pH of 3.02, volume ratio of H2O2/CW of 1.62 mL/L, H2O2/Fe2+ molar ratio of 3.66.

Author Biographies

Reza Davarnejad, Arak University

Head of Chemical Engineering Department,

Kasra Sarvmeili, Arak University

Chemical engineering department

Meysam Sabzehei, Arak University

Department of Chemical Engineering, Faculty of Engineering

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Published
12-09-2019