Controlling Water Usage and Wastewater Discharge

摘要

Water conservation is becoming an in-creasingly important issue at power plants and other industrial facilities around the country. Several factors are driving conservation and waste-water recovery including the U.S. Environmental Protection Agency's anticipated 316a (thermal discharge) and 316b (protection of aquatic life at the cooling water intake) revised guidelines, the decrease in freshwater supplies in many parts of the country and local regulations regarding freshwater use. These issues are propelling many plant owners and engineers toward programs to reduce makeup water usage and to recover significant amounts of wastewater. In some cases, zero liquid discharge (ZLD) may be the requirement. This article examines current methods for reducing power plant water consumption and wastewater discharge.