BVT-Merkblatt zu Abwasser- und Abgasbehandlung

Production
polymers, fibres, optical brighteners, detergents,
pharmaceutical ingredients
Process steps neutralisation
preliminary clarification
biology: trickling filters, activated sludge
tank
final clarification
Pretreatment facilities sedimentation of natural resins in tributary
streams
distillation of tributary streams from pharmaceutical
productions with recycling of
solvent
Facilities for emergency retention tank(s) V = 9500 m
situations
3
Exhaust air treatment combustion of waste gas from trickling
filters and sludge thickeners
Annexes
light stabilisers, antioxidants, corrosion
inhibitors, additives, stabilisers
neutralisation
oil-water separation
flocculation, clarification
denitrification
2-stage biology
final clarification
flotation
precipitation-flocculation-sedimentationfiltration
(tributary stream from organo tin
production)
distillation (tributary stream from amine
production)
2 buffer tanks V = 250 m 3
biofilter
combustion of waste gas from sludge
thickener
Waste water amount
[m 3 /d]
14700 1300
Performance data a
input output performance input output performance
[mg/l] [mg/l] [%] [mg/l] [mg/l] [%]
COD 2300 350 85 4750 220 95.4
BOD5
NH4-N
920 18 98 2430 18 99.3
total inorganic N
total N
65 7 89 88 14.7 83.3
total P 4.4 0.5 88.4 16 1.5 90.6
AOX 0.4 0.16 60 1.5 0.25 83.3
TF 2 3
TD 2 5
TA 8 12
TL 2 8
TM
a daily mean average
Example XVI Example XVII
Production organic and inorganic speciality chemicals pharmaceutical ingredients, vitamins,
organic fine chemicals
Process steps neutralisation
preliminary clarification
denitrification
biological treatment with integrated final
clarification
Pretreatment facilities wet oxidation with H2O2 of tributary streams
from production of fungicides
oxidation of tributary streams containing
Na2S
concentrating tributary streams containing
sulphuric acid
precipitation of tributary stream containing
Ni and recycling Ni
Facilities for emergency retention facilities V = 18000 m
situations
3
Exhaust air treatment
Waste water amount
[m
biofilter for waste gas from buffer tanks,
preliminary clarification and sludge thickener
3 /d]
Performance data a
input output performance
[mg/l] [mg/l] [%]
neutralisation
preliminary clarification
biological treatment with denitrification
final clarification
precipitation of Hg and Ni from tributary
streams
stripping of tributary streams containing
high concentrations of AOX and solvents
retention facilities V = 23000 m 3
facilities for treatment with activated carbon
closed biology and buffer tanks
bioscrubber
4300 5750
input output
[mg/l] [mg/l]
COD 1750 68 96 1740 98 94.4
BOD5
NH4-N
820 9 99 890 5 99.4
total inorganic N
total N
35 3.7 89.5 45 2.7 94
total P 5 0.7 86 7 0.9 87
AOX 0.3
2
0.4
TF
performance
[%]
Waste Water and Waste Gas Treatment 339