1M.S.E.B. Thermal Power Station, Khaperkheda, Nagpur
2Laxmi Narayan Institute of Technology, Nagpur
The prime indicator of economic growth or self-reliance of any country can be known by per capita power generation and consumption of electrical power. The depletion of natural resources is of prime concern for the existence of mankind. In India generation of electric power is mainly from coal and water (i.e., thermal process) where electricity is generated by high-pressure steam, which drives the turbines, which in turn drives the generator. This process required large quantity of treated water and coal. Consumption of resources is now the watch word for every process.
In the coal fired thermal power station the high-pressure steam is produced by using demineralized (DM) water. The exhausted system is condensed in condenser where soft water is used as cooling water. The daily requirement of cooling water make-up, at thermal power station Khaperkheda is approximately 40,000 m3 per day. For the production of soft water polystyrene based strong acid cation exchange resin in the sodium form is used. The exhausted resin is regenerated by using 7° Be to 8° Be solution of sodium chloride (Brine solution). During the regeneration the amount of wastewater produced is around 800 to 900 m3/regeneration, which is responsible for the pollution of the Kolar river.
In the present paper the results on the study are given to show that by proper management of waste about 7,20,000 m3 of water can be segregated per year and recycled.
