United Nations Environment Programme - Stockholm Convention on ...

Slide 7
Emission Factors for Bagasse
burning
• Bagasse fired
• Annual consumption : 1524383 tons
• Heat produced : 13719 TJ
• Emission factors ( mg TEQ/TJ of fuel burnt)
•Air: 500
•Water : 140
•Residue: 5
• Annual release (mg Air: 6858.5)
• Water: 1920.7
• Residue: 68.6 TEQ)
Slide 10
BAT/BEP For Mauritius
Technical meetings with stakeholders and
discussion on the use of Best Available
Technology (BAT) and Best <strong>Environment</strong>al
Practices (BEP) to minimise emission of
dioxins/furans for the following:
• Bagasse burning
• Uncontrolled waste burning
• Medical waste incineration
Slide 8
DIOXIN INVENTORY FOR
MAURITIUS
Slide 11
Bagasse
Annual release of PCDD/Fs per Source Categories for Mauritius for 2003
Source Categories
Annual Releases (g TEQ/a)
Air Water Land Products Residue
Waste Incineration 6.91 NA NA NA 0.3
Ferrous + Non-Ferrous Metal Production 0.20 NA NA NA 0.67
Power Generation and Heating 6.92 2.01 NA NA 0.22
Production of Mineral Products 0.00 NA NA NA 0.01
Transportation 0.05 NA NA NA NA
Uncontrolled Combustion Processes 5.15 NA 0.32 NA 3.29
Product. of Chemicals + Consumer Goods NA NA NA 0.5 NA
Miscellaneous 0.36 NA NA NA 0.00
Disposal/ landfilling NA 3.40 NA NA NA
Identification of Potential Hot -Spots NA NA NA NA NA
Total 19.59 5.41 0.32 0.50 4.58
Grand total (sum of all release vectors): 30.40 g
• Dry bagasse before combustion: difficult to
implement as may not be practicable
• Replace wet scrubbers by appropriate APCS: high
cost implication, may be difficult to implement
• Improved Control of combustion process (e.g.
temperature, oxygen content,etc.):Already done so
as to maximize heat production
• Use of fabric filters for those having ESP: Feasible
Slide 9
Slide 12
Ranking of activities
Activity - Source Category Total % Rank
Power Production - Bagasse 8.85 29.1 1
Uncontrolled Waste burning 6.20 20.4 2
Medical waste incineration 5.51 18.1 3
Landfill leachate 2.82 9.3 4
Accidental fires 1.83 6.0 5
Incinerators owned by CEB* 1.33 4.4 6
UNITS: g TEQ of PCDD/Fs
Uncontrolled waste burning
• For Rodrigues: construct proper landfill
• For Mauritius: enforce law, better solid
waste collecting system, awareness
raising
CEB*: Central Electricity Board
148