BVT-Merkblatt zu Abwasser- und Abgasbehandlung

Annexes
a daily mean average
Example XVI Example XVII
Example XVIII Example XIX
Production textile dyes, intermediates, plastics, resins organic dyes and intermediates, optical
brighteners, antimicrobica, municipal
waste water (50 %)
Process steps neutralisation
2-stage neutralisation
sedimentation
preliminary clarification
tower biology with integrated final clarifica- 2-step biology with denitrification / nitrificationtion
final clarification
Pretreatment facilities recycling of nitric acid from tributary central high pressure wet oxidation for
streams
tributary streams with recalcitrant TOC
filtration-extraction-stripping
load
stripping of ammonia
precipitation of Cu of effluent of wet oxidation
precipitation of heavy metals from several
tributary streams
adsorption of special tributary streams
extraction of special tributary streams,
concentrate to wet oxidation
NF of tributary streams from dye production
(concentrate to wet oxidation, raffinate
to WWTP)
Facilities for emergency
situations
retention tanks V = 10000 m 3 and
V = 7500 m 3
retention tanks V = 6000 m 3
Exhaust air treatment closed facilities closed facilities, except biology and final
clarification
off-gas with plasmacat (ozone, ionisation)
Waste water amount
[m 3 /d]
16000 11000
Performance data a
input output performance input output performance
[mg/l] [mg/l] [%] [mg/l] [mg/l] [%]
COD 620 107 83 1000 250 75 b
BOD5 280 7 97.5 370 6 98.4
NH4-N 152 13 91.5
total inorganic N
total N
42 24 43 153 18 88
total P 1.6 7 1.1 84
AOX 1.2 8.5 1.7 80
TF 2 2
TD 2 1-4
TA 1 1-32
TL 19 4-32
TM
a daily mean average
1.5
b
89 % when considering wet oxidation
Example XX
Production
vitamins, intermediates
Process steps neutralisation
primary clarification, essentially activated
carbon
trickling filters
activated sludge plant, nitrification, denitrification
final clarification
Pretreatment facilities low pressure wet oxidation for tributary
stream containing recalcitrant TOC
evaporation of highly loaded organic waste
water streams and subsequent incineration
of residue
distillation of solvent, recycling
extraction of recalcitrant TOC from tributary
streams
hydrolysis of tributary streams containing
recalcitrant TOC
Facilities for emergency retention tank V = 10000 m
situations
3
possibility to isolate and circumvent one
basin
340 Waste Water and Waste Gas Treatment