Odour Source Control Measure Applicability All Primary Stack Optimization Effective stack design will improve dispersion to reduce Sources site effects with vertical, unimpeded discharge at optimal stack height and velocity, as well as potentially combining individual exhausts to common tall stacks. All Primary Wet Scrubber Effective particulate matter removal, but limited VOC (including Sources removal. Rotoclones) All Primary Oxidizing Scrubber Wet scrubbers that use an oxidizing agent such as hydrogen peroxide, bleach, or others, as the scrubbing solution. Sources Oxidizing agents may be problematic for wastewater treatment. All Primary Thermal Treatment Thermal oxidation is highly effective at removing odorous VOCs. Odorous exhaust flow may be directed to the Sources boiler combustion chamber for incineration, or to a thermal oxidizer. All Primary Biofilter Process exhausts are directed to a conditioning system and biofilter where microorganisms biologically degrade the Sources organic compounds. All Primary Ozonation Concentrated ozone injected into exhaust gases to oxidize VOCs. Sources All Primary Non-Thermal Activated plasmas gas injected into waste gas stream to Plasma Treatment oxidize VOCs. Sources Raw Sugar Engineering Ensure raw sugar is protected from moisture and weather Storage Controls: exposure during transportation, receiving, and storage to prevent fermentation. Containment and Environmental Controls Clarification Process Use purchased pure CO2 instead of on-site boiler flue gas to Optimization: (Carbonatation) eliminate the requirement of carbonatation exhausts and the associated odour emissions. Change Carbonatation Process Clarification Process Change from carbonation to phosphatation to eliminate the Optimization: (Carbonatation) requirement of carbonation exhaust and its associated odour source. Change Carbonatation Process
Odour Source Control Measure Applicability All Primary Sources Stack Optimization Effective stack design will improve dispersion to reduce effects with vertical, unimpeded discharge at optimal stack height and velocity, as well as potentially combining individual exhausts to common tall stacks. All Primary Sources Wet Scrubber (including Rotoclones) Effective particulate matter removal, but limited VOC removal. All Primary Sources Oxidizing Scrubber Wet scrubbers that use an oxidizing agent such as hydrogen peroxide, bleach, or others, as the scrubbing solution. Oxidizing agents may be problematic for wastewater treatment. All Primary Sources Thermal Treatment Thermal oxidation is highly effective at removing odorous VOCs. Odorous exhaust flow may be directed to the site boiler combustion chamber for incineration, or to a thermal oxidizer. All Primary Sources Biofilter Process exhausts are directed to a conditioning system and biofilter where microorganisms biologically degrade the organic compounds. All Primary Sources Ozonation Concentrated ozone injected into exhaust gases to oxidize VOCs. All Primary Sources Non-Thermal Plasma Treatment Activated plasmas gas injected into waste gas stream to oxidize VOCs. Raw Sugar Storage Engineering Controls: Containment and Environmental Controls Ensure raw sugar is protected from moisture and weather exposure during transportation, receiving, and storage to prevent fermentation. Clarification (Carbonatation) Process Optimization: Change Carbonatation Process Use purchased pure CO2 instead of on-site boiler flue gas to eliminate the requirement of carbonatation exhausts and the associated odour emissions. Clarification (Carbonatation) Process Optimization: Change Carbonatation Process Change from carbonation to phosphatation to eliminate the requirement of carbonation exhaust and its associated odour source.
example_odour_control_report_sugar_refinery_facility.docx