Textile effluent containing two dyes, Cibacron Red (CR) and Cibacron Black (CB) and NaCl was treated using advanced oxidation process and nanofiltration. In Scheme 1, advanced oxidation was followed by NF and in Scheme 2, two-step NF was employed. In Scheme 1, dye concentrations fell below 1 mg/l. In Scheme 2, two-step NF results in permeate concentration less than 1 mg/l of dyes. Salt recovery is almost 96% in Scheme 1, which was 3% more than in Scheme 2. COD values of finally treated effluent were well within permissible limit (250 mg/l) in the range of 61?68 mg/l.
Keywords: textile effluent, AOP, advanced oxidation process, nanofiltration, COD, chemical oxygen demand, permeate flux, turbulent promoters, cibacron red, cibacron black, sodium chloride, textile dyes, wastewater treatment