Environmental impact of dyeing and printing industry of Sanganer, Rajasthan (India)

Wastewater and groundwater samples of Sanganer were studied to find out the pollution load of wastewater generated from Dyeing and Printing units and its impact on the quality of domestic wastewater of Amani Shah Nallah and groundwater. The wastewater of these units was found to have high concentration of sodium, chic ride and sulphate. It has remarkable concentration of copper, chromium and iron with low COD and nearly fold BOD. The wastewater of these units, discharged on land without any treatment, comes into Amani Sha Nallah through small watercourses. The quality of domestic wastewater of Nallah deteriorates by the mixing of wastewater of these units. Maximum concentrations of physicochemical parameters were found at Sanganer road bridge sampling point. 11 groundwater samples, collected from various locations of Sanganer, were found polluted due to percolation of wastewater into the ground. Copper and chromium was recorded in some groundwater sources while iron was recorded in almost all sources. Sodium and chloride are the major cation and anion in the groundwater, Which is identical to wastewater of dyeing and printing units. Source G/sub 5/ that is near the small watercourse carrying wastewater of these units have maximum impact and has maximum value of physicochemical parameters. (author)