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F11 <br /> Nitrate Mass Balance Calculation <br />► F <br /> kF <br /> k — Data Input: <br /> i Waste Loading(W): 0.10 in/yr <br /> Site Area(A): 20.72 Acre <br /> Effluent Quantity(Q): 155 Gals Concentration Rain(Nb): 1.00 mg/L-N <br /> Effluent Stream(Nw): 35.00 mg/L-N Denitrification(d): 15% <br /> Deep Pere.of Rain(R): 5.31 inches <br /> Result: <br /> Mass Balance(Nc): 1.5 mg/L-N <br /> --� inking Water urate as N--3fi}8 -N <br /> Perc Cl-Nitrate as N 15% <br /> �1 Eq ons: <br /> From Table 5 in Report. 155 Gals Find Effluent Quantity(Q) <br /> w 5111 m (Q) gal x 1 W x 36 a x 1 acre x 12 in x 1 Find <br /> y"�--daV--"'7'4 a–al 1 Year 43,560 ft' 1 ft (A)acre <br /> 0.1 in/yr(site)=155 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 ft)x(i site/20.72 acres) <br /> FIill <br /> N,= WN,,,(1-d)+RNa Hantzsche-Fennemore Equation(Nc) <br /> W+R <br /> 1.53 mg/L-N=((0.1 in/yr x 35 mg/L-N x(1-0.15))+(5.31 in/yr x 1mg1L-N))/(0.1 in/yr+5.31 in/yr) <br /> Variables: <br /> Nc=Average nitrate-N concentration(mg/1)of combined effluent and rainfall percolate(1.53 mg/L-N). <br /> W=Uniform waste water loading for study area(in/yr)(0.1 inches/year). <br /> Nw=Total nitrate-N concentration of waste water percolate(35 mg/L-N). <br /> d=Fraction of nitrate-N loss due to denitrification in the soil(15%). <br /> R=Uniform deep percolation of rainfall(5.31 in(yr)- <br /> Nb=Background nitrate-N concentration of rainfall(1 mg/L-N). <br /> Assumptions: <br /> 1. Nitrate-N concentration of waste stream based on estimate of 35 mg/L-N. <br /> Assumption based on work from Crites,R.,Tchobanoglous,G.,1998. <br /> 2. Fraction of nitrate-N loss due to denitrification in the soil is assumed to be 15%. <br /> Assumption based on work from Hantzsche and Finnemore, 1992. <br /> � r <br /> 3. Estimated deep percolation of rainfall is 5.31 inlyr,see deep percolation of rain worksheet. <br /> 4. Assume background nitrate-N concentration of rainfall is 1 mg/L-N based on range by <br /> Hantzsche and Fennemore, 1992. <br /> �t <br /> 4 <br /> t ' 1 <br /> P 4 <br /> NEIL O.ANDERSON&ASSOC.,INC. - <br /> k �61Ep1XGAl�HNfE!-EN31NffAN0 LABORATOPoES Y +� <br /> R�slmin.Latl1,GA l4tl O ti <br /> i R®]l6TPlt 1F <br /> lTp p G <br /> ` " Plate 9 <br />