BVT-Merkblatt zu Abwasser- und Abgasbehandlung

Parameter Unit Discharge into surface
water bodies
Discharge into municipal
collecting systems
Zinc mg/l 0.5 1.0
Total Cyanide
(as CN)
mg/l 0.5 1.0
Free active chlorine
mg/l 0.2 0.3
Sulphide (as S) mg/l 1 2
Sulphite (as SO2) mg/l 1 2
Sulphate (as SO3)
(2)
mg/l 1000 1000
Chloride (2) mg/l 1200 1200
Fluoride mg/l 6 12
Total phosphorus
(as P) (3)
mg/l 10 10
Ammonium (as
NH4) (3)
mg/l 15 30
Nitrite (as N) (3) mg/l 0.6 0.6
Nitrate (as N) (3) mg/l 20 30
Fat and animal/vegetable
oil
mg/l 20 40
Total hydrocarbons
mg/l 5 10
Phenols mg/l 0.5 1
Aldehydes mg/l 1 2
Aromatic organic
solvents
mg/l 0.2 0.4
Nitrogen containing
organic solvents
mg/l 0.1 0.2
Total surfactants mg/l 2 4
Pesticides (containingphosphorus)
mg/l 0.10 0.10
Total pesticides
(exclusive phosphorouscontaining
ones), and
also:
mg/l 0.05 0.05
- Aldrin mg/l 0.01 0.01
- Dieldrin mg/l 0.01 0.01
- Endrin mg/l 0.002 0.002
- Isodrin mg/l 0.002 0.002
Chlorinated organic
solvents
mg/l 1 2
Escherichia coli cfu/1 Footnote
(4)
00
ml
Acute toxicity
Sample considered not Sample considered not
test (5)
to be acceptable if after to be acceptable if after
24 hours the fraction of 24 hours the fraction of
immobilised test organ- immobilised test organisms
50 %
isms 80 %
Annexes
Discharge into Venice
Lagoon and surface
water bodies of
its draining area (extract)
Footnotes to the table:
(1) Dependent on the receiving water bodies, the following prescriptions apply:
� Running waters: The maximum temperature difference before and after the discharge
point is 3°C
� Lakes: The wastewater temperature must be 30 °C and further than 50 meters from the
discharge point the temperature increase in the water body must be 3 °C
Waste Water and Waste Gas Treatment 429