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Pt a aro a sbir gst4nticw is -Oat Fain <br /> Data Input: <br /> Effluent Quantity in GPD(Q): 632 Gal/Day <br /> Effluent Stream in mg/L-N (N.): 71.4 tri <br /> Site Area in Acres(A): 31 Acres <br /> Concentratiion in Rain in mg/L-N (NJ : 1 mg/L-N <br /> Denitrification in percent(d): 25 % <br /> Deep Perc.Of Rain in inches/yr(R): 7.85 In/yr <br /> Calculations: <br /> Wi=Q x Cu-FdGal x(Days/Yr)x(Sq-FdAcre x Inches/Ft)x(1/A) <br /> Wi=632 x(1/7.48) x 365 x(1/43560)x 12 x(1/31)=0.274 <br /> N,=Wi`N_(1-d)+RN. <br /> Wi+R <br /> N,=0.274'71.4(1-0.251+(7.851) =2.77 <br /> 0.274+7.85 <br /> Result: <br /> Uniform waste water loading(Wi) 0.27 Inches/Yr <br /> Mass Balance in mg/L-N (NJ: 2.77 mg/L-N <br /> Total Nitrate Mass 103 an <br /> MCL Drinking Water N as N: 10 mg/L.-N <br /> Pereent of MCL Nitrate as N <br /> Variables: <br /> N,=Average nitrate-N concentration(mg/L)of combined effluent and ranfall percolate <br /> Wi =Uniform waste water loading for study area(in/year) <br /> Nw=Total nitrate-N concentration of waste water percolate(mg/L-N) <br /> d=Fraction of nitrate-N loss due to denitrification in the soil(%) <br /> R =Uniform deep percolation of rainfall(inches/yr) <br /> Nb=Background nitrate-N concentration of rainfall (mglL-N) <br /> Assumptions: <br /> Res. Effluent Stream in mg/L-N(N_): 44 mg/L-N <br /> Concentratiion in Rain in mg/L-N (NJ : 1 mg/L-N <br /> Denitrification in percent(d): 25 % <br />