MIL-HDBK-1138
Table 4
Physical and Chemical Characteristics of Septage(1),(2)
Suggested
Design
Parameter
Average
Range
Value(2)
TSS
12,862
310 - 93,378
15,000
VSS
9,027
95 - 51,500
10,000
BOD5
6,480
440 - 78,600
7,000
COD
31,900
1,500 - 703,000
15,000
TKN
588
66 - 1,060
700
NH3-N
97
3 - 116
100
Total P
210
20 - 760
250
Alkalinity
970
522 - 4,190
1,000
Grease
5,600
208 - 23,368
8,000
pH
--
1.5 - 12.6
6.0
Source: EPA Septage Treatment and Disposal Handbook,
October 1984
(1) Values expressed as mg/L, except for pH.
(2) The data presented in this table were compiled from many
sources. The inconsistency of individual data sets
results in some skewing of the data and discrepancies when
individual parameters are compared. This is taken into
account in offering suggested design values.
BOD5
= 5-day Biochemical oxygen
TKN = Total Kjeldahl
demand
COD
= Chemical oxygen demand
TSS = Total suspended
solids
P
= Phosphorus
VSS = Volatile suspended
solids
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