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2.3.8 Recovery/abatement applied to waste water streams
Chapter 2
Figure 2.7 gives an overview of the applied recovery/abatement techniques applied to waste
water streams. The total effluent is normally treated in a biological WWTP, on-site or together
with other waste water in off-site plants (in most cases municipal).
Particular waste water streams which are not suitable for biological treatment are segregated and
separately pretreated or disposed of as waste (e.g. incineration).
In order to ensure a uniform input level for the biological WWTP as much as possible, a
sufficient buffer volume is provided. Providing equalisation can often efficiently reduce toxicity
to a level where it will not adversely impact the operations of a biological WWTP.
Other
Precipitation
Ion-exchange
Extraction
Adsorption
Stripping
Distillation
Permeation
Low biodegradable
Heavy metals
Toxic/inhibiting
Exceptional high loads
?
Buffer
Incineration
Chemical oxidation
Low pressure
wet oxidation
Wet oxidation
Biological
WWTP
Waste water
emission
Figure 2.7: Typically applied recovery/abatement techniques for waste water streams on OFC sites
OFC_BREF Dezember 2005 31