環境influence평가
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WWTPs should given here. Table 10.1 shows the results of some hundred measurement results from different parts of different WWTPs(Frechen 2000).
Table 10.1. Overview over specific odorant flow rates from wastewater treatment plant sources.
Specific odorant from
ou/()
flow rate to
ou/()
Part of plant
Water surface influent channel
200
1,200
Aerated grit chamber
500
20,000
Grease trap
2,000
40,000
Screening
1,000
5,000
Grease from grease trap
1,000
15,000
Sand from grit chamber
1,000
6,500
Primary sedimentation tank: surface
500
4,000
Primary sedimentation tank: weir area
500
5,000
Aeration tank: anaerobic part
850
3,000
Aeration tank: anoxic part
600
2,000
Aeration tank: aerobic part
300
1,700
Final sedimentation tank
150
500
Filtration
100
200
Primary sludge thickener
12,000
35,000
Stabilised sludge thickener
500
5,000
Stabilised sludge, dewatered
600
16,000
Some additional remarks are necessary. The range given in t…(drop)
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