BVT-Merkblatt zu Abwasser- und Abgasbehandlung

Annexes
2. Combined solution/emulsion polymerisation:
the propenenitrile-containing gaseous effluents released from the reactors, during intermediary
storage, during precipitation, during dehydration, with the recycling of solvents and at
the mixers, must be ducted to an incinerator; for the propenenitrile emissions released near
the mixer exhaust, an emission limit value of 10 mg/Nm 3 applies as monthly average.
§ 4. The production of nitrile rubber (NBR)
The propenenitrile-containing spent gases released from the butadiene recycling, during the
intermediary storage of the latex and with the washing of the solid rubber, must be ducted to an
incinerator.
The spent gases released during the recycling of the propenenitrile must be ducted to a spent
gas scrubber.
For the emissions of propenenitrile in the gaseous effluent of the drying plant an emission limit
value of 15 mg/Nm 3 applies.
§ 5. The production of dispersions by emulsion polymerisation of propenenitrile
The propenenitrile-containing gaseous effluents released from the monomer receiving vessels,
the reactors, the intermediary storage tanks and from the condensers, must be ducted to a waste
gas purification plant if the propenenitrile-content exceeds 5 mg/Nm 3 .
Section 5.7.14 The production and processing of viscose
Art. 5.7.14.1
§ 1. The provisions of this section are applicable to the establishments producing viscose, referred
to in section 7 of the classification list.
§ 2. The spent gases from the viscose production, from the reprocessing of the spinning bath
and from the post-treatment to produce textile rayon must be ducted to an air emission abatement
installation.
As a derogation from the provisions of chapter 4.4, the emission limit values for the waste
gases are:
1. for hydrogen sulphide: 5 mg/Nm 3 as daily average value
2. for carbon disulphide: 0.10 g/Nm 3 as daily average value.
§ 3. With the production of cellulose wool and cellophane, the gaseous effluents from the spinning
machines and from the post-treatment must be ducted to an air emission abatement installation.
As a derogation from the provisions of chapter 4.4, the emission limit values for the waste
gases are:
1. for hydrogen sulphide: 5 mg/Nm 3 as daily average value
2. for carbon disulphide: 0.15 g/Nm 3 as daily average value.
§ 4. With the manufacture of viscose products for all gaseous effluents – including the air extracted
from the various rooms and near the machines – the following emission limit values apply
until 31 December 2001:
1. for hydrogen sulphide: 100 mg/Nm 3 as daily average value
2. for carbon disulphide: 600 mg/Nm 3
3. for the sum of hydrogen sulphide and carbon disulphide: 650 mg/Nm 3 .
The best available techniques must be applied to maximally reduce and if possible prevent the
emissions of hydrogen sulphide and carbon disulphide.
372 Waste Water and Waste Gas Treatment