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14W Nitrate Mass Balance Calculation ` O <br /> With Residence <br /> Data Input: <br /> Effluent Quantity(Q): 2,212 gals/day Concentration Rain ft): 1.00 m¢L-N <br /> Effluent Stream(N..): 45.00 mgiL-N Denitnfication(d): 35.0% <br /> Site Area(A): 26.00 Acres Deep Perc.of Rain(R): 4.00 in/yr <br /> Result <br /> Mass Balance(N,): 7.3 mg/L-N Waste Loading(W): 1.14 in/yr <br /> )inking Water Nitrate as N: 10.0 mg/L-N <br /> 'ercent of MCL Nitrate as N 73% <br /> Equations: <br /> Find <br /> (W) in = (Q) gal x 1 ft' x 365 day x 1 acre x 12 in x 1 <br /> yr day 7.48 gal 1 year 43,560 ft' 1 ft (A)acre <br /> b. /0GPV .o�2z3 c34�t6i� <br /> 1.14 iruyr(site)=2,212 gal/day x(1 cu-ft/7.48 gals)x(365 days/1 year)x(1 acre/43,560 sq-ft)x(12 in/1 R)x(1 site/26 acres) <br /> Nc= WN..(1- Hanhsche-Fennemore Equation(Nc) <br /> ✓ doh _.. _ <br /> 7.28 mg2-N=((1.14 in/yr x 45 mgrL-N x(1-0.35))+(4 in/yr x 1mg/L-N))/(1.14 in/yr+4 iW) <br /> Variables: 5(-3 Y •66 -r `( / .S /'le <br /> Nc=Average nitrate-N concentration(mgA)of combined effluent and rainfall percolate(7.28 mg/L-N). <br /> W=Uniform waste water loading for study area(in/yr)(1.14 inches/year). <br /> Nw=Total nitrate-N concentration of waste water percolate(45 mg/L-N). <br /> d=Fraction of nitrate-N loss due to denitrification in the soil(35%). <br /> R=Uniform deep percolation of rainfall(4 in/yr). <br /> 0 <br /> NEIL O. ANDERSON <br /> A N D A S S O C I A T E S <br /> Plate 11 <br />