UFC 4-150-02
12 May 2003
Table 3-4 Typical Ship Sewage Concentrations
CONCENTRATION
CHARACTERISTIC
(mg/L)
Total suspended solids
600
Total dissolved solids
20,000
Chlorides
11,000
Sulfates
1,500
Sodium
6,200
Other dissolved solids
1,300
Biochemical oxygen demand (BOD)
400
Table 3-5 Chloride Inhibition of Biological Nitrification
MAXIMUM CHLORIDE
CONCENTRATION FOR
CONCENTRATION
CHLORIDES IN EXCESS OF
PROCESS
FOR NO INHIBITION
MAXIMUM LEVEL (1)
Trickling filters and
5,000 mg/L
Referring to appropriate design
rotating biological
loading curve, decrease
contactors
loading an amount
corresponding to one
percentage point of removal
efficiency per 1,000 mg/L of
chlorides in excess
of 5,000 mg/L
Activated sludge
5,000 mg/L
Decrease loading by 2% per
1,000 mg/L chlorides in excess
of 5,000 mg/L
Aerobic and
8,000 mg/L
Increase detention time by 2%
facultative lagoons
per 1,000 mg/L chlorides in
excess of 8,000 mg/L
NOTES TO TABLE 3-5
1.
Highest average chloride concentration expected over 24 hours.
3-33
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