Laserfiche WebLink
�, itrate Mass Balance Calculation <br />� Data Input: <br /> Effluent Quantity(Q): 1,190 galslday Concentration Rain (Nb): 1.00 m91L-N <br /> Effluent Stream(N,,): 45.00mglL-N Denitrification(d): 10.0% <br /> —! Site Area(A): 1.20 Acres Deep Perc. of Rain(R): 6.15 inlyr <br /> Waste Loading (VII): 13.33 inlyr <br /> Result: <br /> Mass Balance(N j: 28.0 mg/L-N <br /> t MCL Drinking Water Nitrate as N: 10.0mglL-N <br /> Percent of MCL Nitrate as N 280% <br /> M Equations: <br /> (W) in = (Q) gal x 1 ft3 x 365 day x 1 acre x 12 in x 1 Find <br /> i yr day 7.48 gal 1 year 43,560 ft s 1 ft (A)acre f.7- <br /> 13.33 inlyr(site) =1,190 gallday x(1 cu-ft 17.48 gals)x(365 daysl 1 year)x(1 acre 143,560 sq-ft)x(12 in l 1 ft)x(1 site l 1.2 acres) <br /> 1 <br /> N,= WN,.,(1-d)+RN,, Hantzsche-Fennemore Equation(Nc) <br /> W+R <br /> 28.03 mglL-N=((13.33 inlyr x 45 mglL-N x(1-0.1))+(6.15 inlyr x 1mg1L-N))1(13.33 inlyr+6.15 inlyr) <br /> i Variables: <br /> i <br /> Nc=Average nitrate-N concentration(mg/1)of combined effluent and rainfall percolate(28.03 mg/L-N). <br /> W= Uniform waste water loading for study area(in/yr)(13:33 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 (10%). <br /> F, R=Uniform deep percolation of rainfall (6.15 in/yr). <br /> i Nb= Background nitrate-N concentration of rainfall (1 mg/L-N). <br /> ,—, Assumptions: <br /> 1. Total nitrogen concentration of waste stream based on estimate of 45 mg/L-N. <br /> 2. Fraction of nitrate-N loss due to denitrification in the soil is assumed to be 10%. <br /> 3. Estimated deep percolation of rainfall is 6.15 in/yr, see deep percolation of rain worksheet. <br /> 4. Assume background nitrate-N concentration of rainfall is 1 mg/L-N. <br /> F <br />! F1 <br /> E <br /> E <br /> .l <br /> NEIL O. ANDERSON <br /> PAN D ASSOCIATES <br /> Plate 10 <br />