Laserfiche WebLink
r <br /> y'- Nitrate Mass Balance Calculation.. <br /> Advantex 75% Removal of.Total Nitrogen (Nw = 19 mg/L-N) <br /> Data Input: <br /> Concentration Rain(N y): 1_00 mg/L-N <br /> Effluent Quantity(Q): 436 gals/day Denitrification(d): 5.0% <br /> Effluent Stream.'(N W):.19 mg/L=N Deep Pert.of Rain(R): 5.01 Wyr <br /> Site Area'(A): 14.0 Acres Waste Loading(W): 0,42 in/yr <br /> Result: <br /> Mass Balance(N j: 2.3 mg/L-N <br /> MCI- Drinking Water Nitrate as N: '10.0 mg/L-N <br /> Percent of MCI-Nitrate as N 23% <br /> Equations: <br /> (W) in (Q) galal x 1 ft3 x .365 day x. 1 acre x 12 in x ` 1 Find <br /> yr day ,7.48 gal 1 year - 43,560 ft z. 1 ft (A) <br /> 0.42 in/yr(site) X36 gal/day x(1 cu-fi/7 46 gals)x(365 days/1 year.),x(1 acre/43,560 sg7ft)x(12 in/1 ft)x(1 site/14 acres) <br /> N,= WN, (1A)+RNI, Hantzsche-Fennemore EcIdation Nc <br /> W+R <br /> 2,31 mg/L-N=((0.42 irr/yr x 19 mg/L-N x(1-0.05))+(5.01 in/yr x 1 mglL=N))/(0.42 in/yr+5.01 in/yr) <br /> Variables: <br /> Nc=Average nitrate-N concentration (mgll)of combined effluent and rainfall percolate(2.31 mg/L-N).. <br /> W=Uniform waste water loading for study area(in/yr)(0.42 inches/year). <br /> Nw=Total nitrate-N concentration of waste water percolate(19 mg/L-N). <br /> d =Fraction of nitrate--N,loss due to.denitrification in the soil(5%): , <br /> R= Uniform deep percolation of rainfall(5:01 in/yr). <br /> 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 19 mg/L-N. <br /> 2. Fraction of nitrate-N loss due to denitrification in the soil is assumed to be 5%, <br /> 3. Estimated deep percolation of rainfall is 5.01 in/yr, see deep percolation of rain worksheet. <br /> 4..Assume background nitrate-N concentration-of rainfall is 1 mg/L-N. <br /> = NEf O.ANDERSON&ASSOC.,INC. <br /> ' OEOWCHNCALSMIICES.EMINEERNOLMORATOMED x !q <br /> 47 HoultonLn.Ledi.CA I5710 O A. <br /> . .rsac <br /> Plate 4 <br />