Saline wastewater treatment by electrochemical method

Treatment of saline wastewaters by electrochemical method is investigated in this paper. Experiments were conducted to examine the effects of the operating conditions, such as the pH, initial phenol concentration, salinity, current density, temperature and addition of small amounts of H2O2 on the COD removal efficiency. Possible optimum ranges for these operating variables are experimentally determined. The electrochemical method is found to be guile effective for dealing with the saline wastewaters with salinity of up to 3.5 w/w%. Two kinetic models were also employed to represent the electrochemical treatment process. The experimental data allow determination of the kinetic parameters by the least squares curve fitting principle. The correlation of these two kinetic models to the experimental data is compared. (C) 1998 Elsevier Science Ltd. All rights reserved.