Water pollution management in an opencast coalmine area: Water pollution management through phytoremediation and chemical treatment

Coal mining activities generates huge amount of effluent containing various pollutants. These pollutants are discharged into surrounding water body, thereby polluting it. Major pollutants from coal mining effluents are total suspended solids (TSS), total dissolved solids (TDS), hardness, heavy metals (Fe, Cr, Cd, Cu, Ni, Mn), sulphates, nitrates, phosphates, oil and grease, chloride. When discharged into the aquatic ecosystem, it affects the system. The effects can be also observed by measuring biological properties of aquatic ecosystem. Bina open cast coal mine discharges its effluent to the GBP Sagar. Which was found contaminated with different pollutant. For the waste water management two technologies were used, in first methodology biological treatment of heavy metals using aquatic macrophytes was performed. Different species were tested for their pollution removal capacities and it was shown that they can be used for water pollution management in coal mine area. Second methodology was chemical treatment of suspended solids by the use of coagulants like lime, alum and ?true floc?.