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# Backwash Reclaim System Rebuild
MCM BW TANK 20FT DIAM 16FT HIEGHT
314 CUBFT / FOOT = 2,349 GALS / FOOT
46,980 TOTAL GALS
W9 BW TANK 15FT DIAM 12.5FT HEIGHT
176 CUBFT / FOOT = 1,317 GALS / FOOT
19,755 TOTAL GALS
BACKWASH PRODUCTION
1500 GPM FOR 4 MIN = 6000 GALS
CURRENT BACKWASH IS EVERY 8 HOURS PER FILTER = 18,000 GAL PER DAY
AT MCM, MAX BW PRODUCTION PER DAY = 36,000 GALS
AT W9 MAX BW PRODUCTION PER DAY = 18,000 GALS
PURGE PRODUCTION
APROX 800 GPM FOR 3MIN = 2,400 GALS = 7,200 GALS FOR 3 STARTS PER DAY
RECLAIM CALCS
THEORY 1 - RECLAIM 1 PURGE + 1 BACKWASH'S WORTH BEFORE THE NEXT BW CYCLE.
PLAN FOR SETTLE TIME OF 2 HRS (AFTER PURGE)
LEAVES 6 HRS TO RECLAIM (6,000+2,400) 8,400 GALS
PLAN TO RECLAIM IN 3 HRS MIN TO LEAVE BREATHING ROOM
2800 GALS/HOUR = 47 GPM MINIMUM
CURRENT PUMPS ARE RATED APROX 140GPM AT 80PSI
PIPING REBUILD