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Domestic Wastewater Treatment Mobilization Construction - AskTOP

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E14 1110-3-17211 May 84Overall efficiency = 0 .828=El+E2 (1-El)0 .75 + E2 (1 - 0 .75):2 = 0 :31Recirculation factor F =1 + R(1 + O .1R)21 + 2 = 2 .08Organic loading tofirst stage filter,W = 3 .0 mgd x 8 .34 x 250(1-0 .30) = 4,379 pounds/day ;use 4,380 pounds/dayNow using the NRC formula10 .75 =4,3801 + 0 :0085-2,p8VV = 1 .37 acre feetFilter area= 1 .37 x 43,560 = 9,946 square feet ;6Use two filters,5,000 square feet eachFilter diameter = 79 .8 feet,use 80 feet (each filter)Design second stage filter :Organic loading,=W(1-0 .75)4,390 (1 - 0 .75)1,095 hounds/day

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