CONSTRUCTED WETLANDS TO TREAT TEXTILE INDUSTRY WASTEWATER USING PHRAGMITES KARKAKURNIADIE, D., WIJAYA, D., WIDAYAT, D. AND UMIYATI, UAbstract Textile factory wastewater belongs to one of the main contributor to the water pollution in Indonesia. The sources of wastewater in textile factory mostly coming from the dyeing process. Wastewater normally discharged directly into the surface water without treatment processes causing pollution and are harmful to the surface water. A constructed wetland to treat wastewater from textile factory has been built in textile factory in Sumedang Regency, Indonesia, in June 2018. Water samples from both influent and effluent were taken every 7 days and analysed for COD, DO, pH and colour. The objective of this study was to find out whether combination of pre-treatment and constructed wetland planted with Phragmites karka can meet the discharge requirements corresponding to 150 mg/L chemical oxygen demand (COD), pH 6-9 and colour 200 Pt-Co according to the Indonesian standard for textile industry. The results of this experiment showed that the average of treatment efficiencies during the period from December 2018 to March 2019 for COD and colour were 88.04% and 94.56% respectively, whereas the average concentration of COD in effluent of constructed wetland was 91.25 mg/L and colour was 200 Pt=Co. The overall results showed that COD concentration and colour in effluent were already lower than the Indonesian standard for textile factory wastewater, therefore it can be safely discharge into the public water. |