Abstract

Matters concerned with achieving more efficient use of water resources for coal fired thermal power plants are addressed. Conditions are proposed the fulfilling of which will help preserve the health of the surrounding natural water bodies for many years, and regard thermal power plants as environmentally safe and favorable for the surrounding natural environment. It is determined that the mineralized wastewater from water treatment plants can only be recovered by concentrating them in evaporators of various designs. A unified water usage scheme for an industrial and heating combined heat and power plant based on a thermochemical demineralization method with obtaining final commodity products is proposed. It is pointed out that application of the thermochemical demineralization method at thermal power plants will eliminate the discharge of the following wastewater kinds: circulating cooling system blowdown water, water treatment plant wastewater, boiler blowdown water, and storm water drains. The use of local cleaning and circulating water supply systems minimizes water consumption from the service cooling water source. The developed solutions are based on technological solutions that have been tested under industrial conditions and can be recommended for practical use in upgrading, new construction, or in the development of regulatory documents for more efficient use of water resources in the thermal power plant cycle.

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