(BAT) Reference Document for the Production of Chlor-alkali ...

Chapter 3
at both sites. The amount of waste varies between years depending on the type of maintenance
work that is done and other factors.
Mercury in solids disposal plant-by-plant were in the range of 0-84 g/t chlorine capacity in
1998, as reported by Euro Chlor (see Annex C). OSPARCOM reported 31 tonnes of mercury in
solid wastes not recycled for 1997.
Table 3.30: Waste generation and final treatment at the AkzoNobel chlor-alkali plant in Bohus
(Sweden) in 1998/1999 (chlorine capacity 100 kt/yr; production based on vacuum
salt)
Waste type
Waste
amount in
t/yr
[tonnes/year]
Brine sludge 12 – 20
Waste water
treatment sludge
Hg Mercury
content before
treatment in
g/kg
0.050 – 0.150
50 – 150 mg/kg
30 – 40 15 – 30 g/kg
Carbon sludge 2 150 – 300 g/kg
Decomposer
carbon
Rubber lining 0.5
Steel/iron
construction parts
Varies
Concrete and
other construction
waste
Varies
5 t/yr in 1998
Source: [ 75, COM 2001 ]
2 15 – 30 g/kg
Treatment
Landfilled
stabilisation
Distilled
after
Landfilled
stabilisation
Distilled
after
Landfilled
stabilisation
Distilled
after
Landfilled
stabilisation
Acid bath
Incineration
Acid bath
Sold as scrap
after
Landfilled as hazardous
waste or as other waste
depending on content
Annual plant capacity: 100000 tonnes of chlorine. Production based on vacuum salt.
Final
mercury
content in
[mg/kg]
WORKING DRAFT IN PROGRESS
126 December 2011 TB/EIPPCB/CAK_Draft_1
< 10
20 – 200
20 – 200
300
< 5
> 5
< 5