ABSTRACT
This chapter discusses the steps taken to quickly recover cation bed capacity and to optimize regeneration efficiency. The dilute night waste, which contains 40% deionized water, is further treated by dual media filtration, activated carbon adsorption and two bed ion exchange present in the nighttime waste process flow scheme. High purity water is produced using dual media filtration for gross particulate removal, activated carbon adsorption for removal of organics and chlorine, UV sterilization, two bed ion exchange, mixed bed ion exchange, UV sterilization, 0.6 micron and 0.2 micron membrane filtration. Historically, wastewater generated by the research activities has been treated by an Industrial Wastewater Treatment Facility and its effluent recycled for reuse in laboratory sinks, as boiler makeup and feedwater to the sites deionized water systems. When used in the High Purity Water System plant at economic salt levels, some salt leakage occurred, causing an increase in effluent conductivity and an increased load on the mixed bed exchangers.
