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map-29-99 04:43P P .03 <br /> 0 <br /> AR <br /> AM Ess— <br /> AF In <br /> Jm%=520 IE <br /> CONDENSED SIZING INFORMATION <br /> (FOR MORE DETAILED APPLICATION INFORMATION <br /> SEE A-520 TECHNICAL DATA BULLETIN) <br /> SERVICE: One(1)to four(4)g-p-m-per cubic foot. <br /> BACKWASH: BACKWASH FLOW RATES(10 TO 15 minutes) <br /> TANK DIA.,INCHES 8 9 10 12 <br /> Flow at 50°F,gpm 53 .66 .83 1.19 <br /> Flow at 70°F,gpm .74 .92 1.16 1.67 <br /> REGENERATION: Eight(8)pounds of salt per cubic foot at about an eight(8%)percent concentration for 30 minutes <br /> or more. <br /> SLOW RINSE: Use eight(8)to ton(10)gallons per cubic foot. <br /> FAST RINSE: Generally about 20 to 30 gallons per cubic foot or when outlet chlorides <br /> are no more than 10%over the chlorides coming in. <br /> TREATED VOLUMES PER CUBIC FOOT: <br /> The following is based on the nitrates asshown and usesan average"nitrate to nitrate plussulfate ratio"applicable to most <br /> waters.At this ratio the A-520E has a capacity to remove 7,500 grains of the nitrate Ion(measured as calcium carbonate) <br /> when regenerated with eight(8)pounds of salt per cubic foot. <br /> NITRATE LEVEL, ppm EXPRESSED AS ION LISTED <br /> NITROGEN NITRATE CALCIUM GRAINS PER GALLONS OF <br /> (N) (NO3) CARBONATE GALLON AS TREATED WATER <br /> (C00O3) CaCO3 (per cu.%) <br /> 2 9 7 0.42 17,857 <br /> 4 18 14 0.84 8,928 <br /> 6 27 21 1.25 6,000 <br /> 8 35 29 1.67 4,491 <br /> 10 44 36 2.00 3,589 <br /> 12 53 43 2.51 2,988 <br /> 14 62 50 2.92 2,568 <br /> 16 71 57 3.34 2,246 <br /> 18 80 64 3.76 1,995 <br /> 20 89 71 4.18 1,794 <br /> 22 97 79 4.59 1,634 <br /> 24 106 86 5.01 1497 <br /> 26 115 93 5.43 1:381 <br /> 28 124 100 5.85 1,282 <br /> 30 133 107 6.27 1,196 <br /> 40 180 140 8.4 893 <br /> 60 225 175 10.5 746 <br /> 60 266 214 12.5 600 <br /> NOTE:E.P.A.limits nitrates to 10 ppm as nitrogen(N), <br /> The above capacity volumes fora cubic foot of A-520E are conservative estimates. For more exacting capacity figures <br /> and leakage data refer to the technical bulletin for A-520E.The bulletin also incorporates a higher salt dosage should <br /> more capacity per cubic foot be required. <br />