TABLE 3.DAIRY LIQUID MANURE SLURRY CHARACTERISTICS *
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Parameter Unitsa Total Parameter Concentration Parameter Mass
No of ------------------------------------------------------------------------------- -----------lb/day/-----------
Observ minimum maximum median mean std dev head 1000 lb
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Slurryb gal/1400 lb/day estc - - - 23 - 187 134
Density lb/gal 6 8.0 8.4 8.4 8.3 0.15 - -
TS %wb 95 1.1 17 6.5 7.0 2.9 13 9.4
TSS %db 5 67 85 77 76 6.6 10 7.1
VS %db 56 63 87 75 77 6.0 10 7.2
VSS %db 3 55 77 55 62 10 8.2 5.8
ALKA mg/L 12 1700 5462 2556 2973 1141 0.56 0.40
BOD5 mg/L 3 9090 17996 15107 14064 3710 2.6 1.9
COD mg/L 64 11321 119386 52913 54107 25735 10 7.2
HARD mg/L 1 3347 3347 3347 3347 - 0.63 0.45
TOC mg/L 16 1504 30000 4226 8183 9380 1.5 1.1
VA mg/L 9 1100 3512 1699 1951 772 0.37 0.26
pH 54 6.2 8.5 7.1 7.1 0.46 - -
TKN lb/1000 gal 423 5.0 50 20 22 8.9 0.50 0.35
NH3N %tkn 69 26 61 42 42 7.9 0.94 0.67
NO3N lb/1000 gal 8 0.036 0.24 0.093 0.12 0.067 0.0027 0.0019
P2O5 lb/1000 gal 403 1.9 37 13 14 6.6 0.31 0.22
PO4 %p2o5 14 61 91 74 75 7.4 1.7 1.2
K2O lb/1000 gal 410 2.0 50 19 20 8.7 0.45 0.32
Al lb/1000 gal 1 0.97 0.97 0.97 0.97 - 0.022 0.016
B lb/1000 gal 144 0.0017 0.040 0.013 0.014 0.0078 0.00032 0.00023
Ca lb/1000 gal 351 0.76 34 9.2 10 5.9 0.24 0.17
Cl lb/1000 gal 29 1.6 13 4.4 5.3 2.6 0.12 0.085
Cu lb/1000 gal 339 0.0075 0.17 0.036 0.046 0.034 0.0010 0.00075
Fe lb/1000 gal 337 0.10 7.6 1.5 1.9 1.6 0.043 0.031
Mg lb/1000 gal 347 0.79 17 4.2 5.0 2.8 0.11 0.080
Mn lb/1000 gal 339 0.041 0.43 0.17 0.18 0.080 0.0040 0.0029
Na lb/1000 gal 171 0.78 8.4 2.5 3.1 1.7 0.070 0.050
S lb/1000 gal 154 0.83 7.0 2.5 3.0 1.4 0.067 0.048
Zn lb/1000 gal 338 0.038 0.78 0.16 0.19 0.12 0.0043 0.0031
Cond umho/cm 28 3283 12250 7088 7191 2520 - -
FC col/100 mL 2 1.00E+04 4.20E+06 2.13E+06 2.13E+06 2.12E+06 1.81E+09 1.30E+09
FS col/100 mL 1 1.20E+05 1.20E+05 1.20E+05 1.20E+05 - 1.02E+08 7.31E+07
TC col/100 mL 2 6.50E+05 5.50E+07 2.78E+07 2.78E+07 2.72E+07 2.37E+10 1.70E+10
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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 6-12 months accumulation of manure, milking center wastewater, average storage surface rainfall surplus;
does not include fresh water for flushing or lot runoff.
c Mean value extrapolated from other data; measured values not available.