INVESTIGATION OF EFFLUENT QUALITY DISCHARGED FROM THE TEXTILE INDUSTRY OF PURBANI GROUP, GAZIPUR, BANGLADESH AND IT'S MANAGEMENT (original) (raw)

The study was conducted to investigate the effluent management techniques and physicochemical properties of effluents in different station of Effluent Treatment Plant (ETP) in Purbani Group during the period from December 2011 to June 2012. Nine water samples were collected from nine different points of the ETP in the Purbani Group. The results of the study revealed that the lowest temperature was found 33.4°c at the outlet. The highest pH was found 9.4 at the inlet and the lowest value was 6.8 at the neutralization tank. The highest DO was found 5.90 ppm at the oxidation tank and sedimentation feeding tank, while 4.1 ppm was found at the outlet. The highest EC was found 4171 µS/cm at the inlet of the ETP, where the lowest was found 1902 µS/cm at the sludge thickener. The study also showed that the lowest TDS (1132 ppm), BOD (23 ppm) and COD (95 ppm) was found at the outlet which was comparatively better than others. Although the effluent from the outlet contained pollutants, these effluent quality was comparatively good than the untreated waste water discharged from the industry.