Simple treatment of textile industry wastewater for reuse and recycling

Abstract EN

The aim of the present work is at describing a simple physico-chemical treatment for the textile wastewater of a local plant to bring its characteristics to that used within the plant.

Lime and polyelectrolyte were employed individually to aid the removal of pollutants.

The effectiveness of the treatment was indicated by measuring parameters like biochemical oxygen demand, BOD, turbidity, electrical conductivity, EC, total suspended solids, TSS, total dissolved solid, TDS, for the produced water after filtration through simple sand filter.

The treatment was supported by an extensive study of the coagulation / flocculation and filtration processes.

Color dyes adsorb efficiently onto the coagulant particles and separates from the original liquor.

Pollutants removal efficiency (Turbidity, TSS, TDS, and color), by (87-90 %, 81-85 %, 30-32 % 40-45 %) respectively could be obtained by using lime solution of concentration 35-40 mg / L without addition of cationic polyelectrolyte.

Increasing lime concentration results in some difficulties like high pH value of water discharged, dewatering problems and sand filter clogging.