Description; Sewage Treatment Plant (Stp); Process Summary - ProMinent DULCOMETER PH-501 Assembly And Operating Instructions Manual

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DESCRIPTION

2.1

SEWAGE TREATMENT PLANT (STP)

The plant is designed based on the occupation maximum of the camp for 400 persons (240L per day
and per person). The design flows are presented in Table 1.
Table 1: Design flow rate
Parameters
Per capita design flow
Number of persons
Average daily flow (ADF)
Maximum Daily Flow (MDF)
Peak Hourly Flow (PHF)
Overall time for speak to occur
Maximum number of peak events per day
Table 2 presents the typical sewage composition used for the design (based on Meadowbank sewage
quality).
Table 2: Sewage typical chemical composition
Parameters
Biochemical Oxygen Demand (BOD
Total Suspended Solids (TSS)
Total Kjeldahl Nitrogen (TKN)
Ammonia nitrogen (NH -N)
3
Oil and Grease
pH
Water Temperature
Alkalinity
2.1.1

Process summary

The sewage treatment plant receives two streams of sewage as presented in Figure 4 (basic flowsheet
of the STP). The first source is domestic sewage, which is fed directly to the fine screening process to
remove any fibers or debris that might damage the membranes. The second source is kitchen sewage
which is pre-treated in the oil and grease tanks to remove oil and grease prior to being fed into the fine
)
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Operation & Maintenance Manual
Design Value
240
400
96
192
24
2
2
Unit
mg/L
mg/L
mg/L
mg/L
mg/L
-
C
O
mg/L as CaCO
3
Sewage treatment plant
February 2019
Unit
L/p/d
People
m /d
3
m /d
3
m /h
3
hours
Qty
Design Value
952
300
130
130
30
6 to 9.5
10 to 25
471.1
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