TABLE 55.  LAYER ANAEROBIC LAGOON SLUDGE CHARACTERISTICS *
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Parameter Unitsa Total Parameter Concentration Parameter Mass
No of ------------------------------------------------------------------------------- ----------------lb/day/---------
Observ minimum maximum median mean std dev bird 1000 lb
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Sludgeb gal/4 lb/day 4 0.010 0.015 0.013 0.013 0.0020 0.11 27
Density lb/gal estc - - - 8.3 - - -
TS %wb 5 7.4 29 16 17 7.3 0.018 4.5
VS %db 3 37 51 45 44 5.7 0.0079 2.0
COD mg/L 1 13327 13327 13327 13327 - 0.0014 0.36
TKN lb/1000 gal 12 7.6 43 18 21 12 0.00027 0.067
NH3N %tkn 4 20 60 23 31 16 0.000085 0.021
P2O5 lb/1000 gal 11 21 160 78 77 40 0.0010 0.25
PO4 %p2o5 1 98 98 98 98 - 0.00098 0.25
K2O lb/1000 gal 13 1.0 28 7.2 9.8 7.7 0.00013 0.032
B lb/1000 gal 7 0.0091 0.082 0.017 0.035 0.028 0.00000045 0.00011
Ca lb/1000 gal 9 1.7 206 20 47 63 0.00061 0.15
Cd lb/1000 gal 1 0.0058 0.0058 0.0058 0.0058 - 0.000000076 0.000019
Cu lb/1000 gal 9 0.0092 0.31 0.11 0.14 0.12 0.0000018 0.00046
Fe lb/1000 gal 7 1.2 9.6 4.5 4.8 2.3 0.000063 0.016
Mg lb/1000 gal 8 0.83 24 10 12 9.5 0.00015 0.037
Mn lb/1000 gal 6 0.21 4.6 1.0 1.6 1.5 0.000021 0.0052
Na lb/1000 gal 9 0.83 6.8 3.3 3.3 1.8 0.000043 0.011
Ni lb/1000 gal 1 0.024 0.024 0.024 0.024 - 0.00000032 0.000079
Pb lb/1000 gal 1 0.020 0.020 0.020 0.020 - 0.00000026 0.000064
S lb/1000 gal 8 2.5 13 4.9 7.1 4.4 0.000092 0.023
Zn lb/1000 gal 7 0.20 2.8 0.39 1.1 1.0 0.000015 0.0037
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* References:Biological & Agricultural Engineering Dept, North Carolina State University, Jan 1994.
Agronomic Division, North Carolina Department of Agriculture & Consumer Services.
a All concentrations as is or wet basis (wb) except as noted dry matter basis (db); all mass values wb.
b No manure solids removal prior to lagoon input.
c Mean value extrapolated from other data; measured values not available.