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<br />'"r," <br /> <br />'':oj'" <br />, <br /> <br />o <br /> <br />'>:'~ <br />:~" ~ <br /> <br />C""-; <br /> <br /><;j'i <br />e'l <br />t.-' <br />c," <br /> <br />->:~~~ <br /> <br />.:.,' <br />"o:'ifr, <br />""-, <br />~"i: ': <br />~~:,:.ij <br />"!':~ <br />':')':'1. <br />~~ <br />l'l.,'J <br />,~~ <br />~';~i <br /> <br />A <br />"..', <br /> <br />, :-: <br />, <br /> <br />:-;, <br />y <br /> <br />:.:v <br />! '.,\~ <br /> <br />f.:, <br /> <br />.,-~, <br /> <br />~.:. <br /> <br />:',,:: <br /> <br />;,. <br />1.' <br /> <br />I, <br /> <br />_:~ <br />" <br /> <br />"'~ <br /> <br />-,";< <br /> <br />;: <br /> <br />~; <br /> <br />~. ' <br /> <br />.;i; <br />'j <br /> <br />~':: <br /> <br />" <br /> <br />, ' <br />'.') <br /> <br />.. <br />,',~ <br />:,,1 <br />, <br />" <br />t'i,~ <br />i~} <br />,~~ <br /> <br /> <br />;,,',';' <br />...~:.;,: <br /> <br />" ~~ <br /><<,:') <br />j-~~ <br /> <br />CONTENTS <br /> <br />Section <br /> <br />I NTRODUCT I ON <br /> <br />. <br /> <br />1-1 <br /> <br />. . . . . . <br /> <br />2 <br /> <br />POWER PLANT DESCRIPTION <br /> <br />2-1 <br /> <br />3 WATER SUPPLY DESCRIPTION <br /> <br />Secondary Sewage Effluent <br />Lower Virgin River Unit <br /> <br />. <br /> <br />3-1 <br />3-2 <br /> <br />4 SELECTION AND DESIGN OF WATER TREATMENT PROCESS OPTIONS <br /> <br />Saline Water Use Technology Review. . . . . . <br />Water Treatment Operating and Design Criteria <br />Screening of Water Treatment Process Options. <br />Water Treatment Process Design. . . . . . . . <br /> <br />. <br /> <br />4-1 <br />4-8 <br />4-10 <br />4-13 <br /> <br />. <br /> <br />5 ECONOMIC COMPARISON OF WATER TREATMENT PROCESS OPTIONS <br /> <br />Equipment Cost Estimates. . . . . . . <br />ChemIcal Costs. . . . . . . . . . . . <br />Power Usage ... . . . . . . . . . . <br />Operating Labor and Maintenance Costs <br />Levellzed Cost Comparison of Process Options <br />Economic Sensitivity Analysis ... <br />Cost-effectiveness for Salt Removal <br /> <br />. 5-1 <br />. 5-4 <br />. 5-4 <br /> 5-4 <br /> 5-7 <br /> 5-7 <br />. 5-8 <br /> 6-1 <br /> 7-1 <br /> 8-1 <br /> 9-1 <br /> <br />. <br /> <br />6 CONCLUSIONS AND RECOMMENDATIONS <br />7 APPENDIX <br />8 GLOSSARY <br /> <br />9 REFERENCES. <br /> <br />Vii <br />