Simple Treatment Of Textile Industry Wastewater For Reuse And Recycling

Abstract

The aim of the present work is at describing a simple physico-chemicaltreatment for the textile wastewater of a local plant to bring its characteristics tothat used within the plant. Lime and polyelectrolyte were employed individually toaid the removal of pollutants. The effectiveness of the treatment was indicated bymeasuring parameters like biochemical oxygen demand, BOD, turbidity, electricalconductivity, EC, total suspended solids, TSS, total dissolved solid, TDS, for theproduced water after filtration through simple sand filter. The treatment wassupported by an extensive study of the coagulation/flocculation and filtrationprocesses. Color dyes adsorb efficiently onto the coagulant particles and separatesfrom the original liquor. Pollutants removal efficiency (Turbidity, TSS, TDS, andcolor), by (87-90%, 81-85%, 30-32% 40-45%) respectively could be obtained byusing lime solution of concentration 35-40 mg/L without addition of cationicpolyelectrolyte. Increasing lime concentration results in some difficulties like highpH value of water discharged, dewatering problems and sand filter clogging.