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<br />!,r, <br />("':I <br />""" <br />('oJ <br />~, Condensate System <br /> <br />c' <br /> <br />The condensate makeup system Includes one mixed bed demlneral Izer per gener- <br />ating unit. The makeup water source for the demlneral Izers Is variable with <br />the study process options. <br /> <br />Condensate pol ishing demlneralizers are provided to control condensate <br />qual ity. <br /> <br />Circulating Water System <br /> <br />The circulating water system for each unit includes a condenser and mechanical <br />Induced-draft cool ing tower. The circulating water system design assumes a <br />wet bulb temperature of 72 degrees F. and condenser inlet and outlet tempera- <br />tures of 84 and 107 degrees F., respectively. The cooling tower circulating <br />water rate is 108,700 gpm, and drift is assumed at 0.002% of the circulating <br />water rate. Cooling tower makeup flow and blowdown flow are variable with the <br />water treatment process options. <br /> <br />Ash System <br /> <br />Fly ash Is collected In bag house filters and transferred pnuematlcal Iy to fly <br />ash unloading silos. Fly ash wll I either be sold and trucked from the plant <br />site or mixed with sludge for pond disposal. No fly ash wetting Is assumed. <br /> <br />The bottom ash system provides wet sluicing of bottom ash to settling and dis- <br />posal ponds, with recycle of settled ash water back to the plant ash sluice <br />system. Makeup water sources for the bottom ash system are variable with the <br />study options. <br /> <br />Flue Gas Desulfurlzatlon System <br /> <br />A flue gas desulfurlzatlon system CFGD), using one wet limestone scrubber per <br />generating unit, is provided for sulfur dioxide control. Makeup water sources <br />for the FGD system are variable with the study options. <br /> <br />Wastewater Treatment and Disposal Systems <br /> <br />The plant wastewater treatment and disposal system design Incorporates cascade <br />reuse of al I wastewaters within the plant, and evaporation ponds for final <br />wastewater disposal. Wastewater concentration, to reduce evaporation pond In- <br />flow, Is variable with the study options. <br /> <br />The evaporation ponds have single clay or membrane liners with subsurface <br />monitoring systems. The evaporation ponds are designed to meet federal and <br />state standards for power plant wastewater disposal. The ponds are sized as- <br />suming a net annual average evaporation rate of 2.0 gpm per acre, Including <br />adjustment for salinity. <br /> <br />..'. <br /> <br />2-2 <br /> <br />" <br /> <br />~': <br /> <br />:;'~ <br />