Application of chlorine dioxide for secondary effluent polishing
Application of chlorine dioxide for secondary effluent polishing * F. Vaezi, K. Naddafi, F. Karimi and M. Alimohammadi Department of Environmental Health Engineering, School of Public Health and Institute of Health Research Center, Tehran University of Medical Sciences, Tehran, Iran Abstract There are still many difficulties for developing the projects of using treated effluents. In this study, the efficiency of chlorine deoxide in the process of preparing the effluent of Sahebgharanieh Plant of Tehran for reuse purposes has been determind. Major results are as follows: Total COD reductions resulted from effluent treatment by ClO2 solutions having concentrations equal to 1/4, 1/2 and 1/1 of COD samples at one hour contact time have been about 42%, 49% and 59% respectively. Total suspended solids were also reduced by treatment with ClO2 solutions having the certain concentrations mentioned, and the reductions were about 37% ,47% and 58% respectively. Besides total and fecal colifo