Achieving Zero Odour Impact

Transcription

1 Achieving Zero Odour Impact Presentation by: Derek S. Webb, President & CEO

2 BIOREM: AIR EMISSIONS ABATEMENT 20+ years experience > 1000 projects installed 90 projects per year

3 ODOUR CONTROL Offerings: Full design services Covers, collection systems, odour control systems Selection of appropriate technology for each application Biological H2S Removal Biological VOC Removal Energy efficient designs

4 ORGANICS PROCESSING Aerobic and Anaerobic Feed Streams (Food Waste, SSO, Leaf & Yard, Biosolids) Processing (Pre-treatment, Storage, Handling) Proximity to Neighbours Topography

5 ORGANICS PROCESSING Factors Impacting Odour Generation: 1. Age and Type of Raw Materials 2. Technology 3. Compost Aeration Rates 4. Building Ventilation Rates 5. Temperatures 6. ph, moisture 7. Plant Operations

6 ORGANICS PROCESSING These processes generate a variety of odiferous compounds: NH3, Amines and other Nitrogenbearing Compounds H2S & Sulfur-bearing Compounds Aldehydes Acetic Acid Volatile Fatty Acids Terpenes

7 WHERE DO YOU FIND ODOURS? Transportation Reception & Storage Pre-treatment (bag opening, mechanical separation, homogenization) Treatment Process Releases (composting, digestion, drying) Fugitive Emissions Waste Material and By-products Management Waste water ponds Leachate accumulations Screening and blending

8 DESIGN CONSIDERATIONS Containment (negative pressure, collection systems, air curtains, doubledoors, in-vessel systems, operation protocols) Air Volume Minimization (recycling, containment, invessel systems) Abatement (process knowledge, technology selection, design and performance objectives)

9 ABATEMENT EQUIPMENT SELECTION Criteria Activated Carbon Chemical Scrubber NTP Ionization Organic Media Biofilters Biorem (engineered systems) Capital Cost Low Low Low Moderate Moderate Operating Cost High High Moderate Moderate Low Maintenance High High Moderate High Low Safety High Low Moderate High High Performance High Low Low Moderate High

10 BIOLOGICAL SYSTEMS Biofilters and Biotrickling Filters are examples of Fixed-Film Reactors Bacteria and fungi are immobilized on the surface of a matrix Malodorous compounds are utilized as substrate Two-stage process: phase transfer and oxidation No hazardous byproducts are created

11 CONVENTIONAL SYSTEMS 1. Large Footprints 2. Excessive Energy Consumption 3. Moisture Control Difficulties 4. Variations in Batches 5. Declining Performance 6. Contribute to Odor/VOC Load 7. High Maintenance

12 ADVANCED BIOLOGICAL SYSTEMS Adsorption Absorption Media Particle Permanent Low Energy Consumption Specific Surface Properties High Available Surface Area Predictable Performance No Background Odor Biofilm

13 1 OU CAN BE ACHIEVED! Demanding applications require advanced solutions Pretreatment Engineered Media Dispersion Modeling Ventilation/Building Design Proper Plant Operation

14 Pressure Drop ("WC/ft) ENERGY CONSUMPTION Organic-3 years 0.4 Organic-Fresh 0.2 Inorganic-Fresh/3 years Superficial Velocity (ft 3 /ft 2 /min)

15 OUTLET 77 OUTLET - Synthetic 0.01 OUTLET - Organic 0.01 OUTLET - Synthetic 0.03 INLET 1.05 OUTLET - Synthetic 0.03 INLET OUTLET - Organic 1.12 Odor Units [OU] PPM-mole INLET 2.95 OUTLET INLET OUTLET - Organic 4.52 INLET 6.76 PERFORMANCE BIOSORBENS - Synthetic BIOMIX - Organic 0 MM - Methyl mercaptan DMS - Dimethyl Sulphide DMDS - Dimethyl disulfide

16 DISCO ROAD CASE STUDY Application Anaerobic Digestion (ICI,SSO) Plant Capacity 90,000 TPY Technology Mesophilic Wet Digestion, BTA hydro-mechanical pre-treatment system Start-up Fall 2013 Sources Receiving area, building ventilation, storage tanks

17 DISCO ROAD CASE STUDY Technology Biofilter Media Biosorbens Configuration 6 cell system; induced flow Air Flow 75,000 m 3 /hr EBRT 35s Inlet 10 ppm NH 3 5 ppm H2S 50,000 OU/m 3 Permit 1 OU/m 3 at the property boundary

18 CITY OF GUELPH CASE STUDY Application Composting (SSO,Leaf/Yard) Plant Capacity 30,000 TPY Technology High Rate in-vessel Composting Commissioned Fall 2011 Sources Receiving Area, Active, Maturation

19 CITY OF GUELPH CASE STUDY Technology CS + BF Media Biosorbens Configuration 3 cell system; induced flow Air Flow 187,000 m 3 /hr EBRT 35s Inlet 200 ppm NH 3 5 ppm H2S 25,000 OU/m 3 Permit 1 OU/m 3

20 BIOEN CASE STUDY Application Anaerobic Digestion (ICI) Plant Capacity 70,000 TPY 2.85 megawatts produced Technology Wet Mesophillic, 2 stage Commissioned Winter 2014 Sources Receiving Area, Building Ventilation

21 BIOEN CASE STUDY Technology Biofilter Media Biosorbens Configuration 2 cell modular system; induced flow Air Flow 20,000 m 3 /hr EBRT 35s Inlet 10 ppm H2S 5 ppm NH3 15,000 OU/m 3 Permit 1 OU/m 3

22 SUMMARY OF CHALLENGES Key Challenges for Organics Processing Odour Abatement: 1. Particulates 2. Temperature 3. Ammonia 4. Biomass 5. Neighbours 6. Estimating Odour Loads

23 THANK YOU! For more information,