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MSW solid waste management
The document discusses challenges with traditional waste treatment and proposes ArrowBio's solution using hydro mechanical separation followed by multi-stage anaerobic digestion to produce a clean organic stream for processing along with renewable energy and recyclable materials. ArrowBio's process aims to minimize landfilling and pollution while maximizing diversion rates, recycling percentages, and renewable energy production from waste in a cost effective manner. The document provides details on ArrowBio's technological process and presents estimated figures for plant capacity, biogas and electricity production, workforce needs, and costs.
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MSW solid waste management
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- 2. Minimize: Landfilling& Hauling Pollution Disposal costs Maximize: Diversion rate Recycling percentage Renewable energy Alternative Technology: Modern Cost effective (ROI) Reference sites 2 Waste challenges
- 3. Main advantages: Excellent for treating the biodegradable organics of the waste. Moisture in the input is a blessing. A natural way, with very low emissions, if at all. Available Mechanical Biological Treatments Dry separation + Aerobic composting (Composting). Dry separation + Anaerobic Digestion (AD). Main problems: The non-biodegradable materials must be fully pre-sorted. If not – The output of the biological treatment is contaminated and unusable. 3 Biological Treatment MAIN UNSOLVED PROBLEM: HOW TO SEPARATE AND TREAT THE BIODEGRADABLE ORGANICS ?
- 4. ArrowBio: Hydro Mechanical Separation + Multistage Anaerobic Digestion -------------------------------------------------- = Clean organic stream + Green Energy + Recyclable Materials 4 THE OPTIMAL SOLUTION ArrowBio Fact : Biodegradable organics behave different than other materials, while in water
- 5. Process Logic Hydro MechanicalSeparation & Preparation Multi Stage Anaerobic Digestion SBR
- 6. Technological Brief SeparationProcess • Unique Hydro mechanical Separation • Clean Organic to AD process • Use of materials for recycling Anaerobic treatment • A two stage fast anaerobic process • Mesophilic process . • 97% of water are recycled. • Production of Biogas and Electricity 10/2015 6
- 7. Sorting Vat Unders Overs Eddy Current Manual cardboard,paper & plastic separation From Solid to Liquid Landfill Manual Bulky items removal Landfill Bailer 1st Trommel & bag opening Unders Magnet 2nd Trommel & bag opening Film plastics air separation Manual cardboard separation Film plastics air separation Heavy materials Trommel screening Light materials Unders Film plastics air separation Shredder 1 Bailer Containers Overs Wet shredder Sand Container Shredder 2 Film plastics air separation Organics Overs Plastics separation Overs Magnet Hydro CrusherScreening ModuleLiquid reservoir and pumps to Biological Unders Medium Liquid reservoir and pumps to Biological + residue settling Fine Filter Glass Container Hydro Cyclone Coarse Screen Unders stream to anaerobic process Sand Container Hydro CrusherScreening ModuleLiquid reservoir and pumps to Biological Unders Medium Liquid reservoir and pumps to Biological + residue settling Fine Filter Glass Container Hydro Cyclone Bailer ContainerContainer Container Fine Screen Unders stream Coarse Screen Unders stream to anaerobic process Fine Screen Unders stream Container Shredder 3 ContainerContainers
- 8. Methanogenic Low Solid Reactor Thickeningsystem De- watering system Balance Tank Solids Removal Contaminants Screening Coarse Screen Unders stream Fine Screen Unders stream Anaerobic Digester Aerobic Reactor (SBR) Biogas Tank Generator Biological Treatment Landfill Biogas Soil Amendment container Acetogenic reactor Oversize Liquid Sludge Liquid Liquid Suspended Solid removal Liquid Sewage Sludge Separation Vats Biogas Electricity + Heat Liquid Stabilized solids Liquid
- 9. Recyclables and byproducts 9 Ferrous metals PET HDPE Biogas & Power production Film Plastic GlassNon-Ferrous PaperCardboard Sand Fertilizer
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- 11. Send only20%-30% of the waste to Landfill (mainly inert residues) Substantially increase recycling percentages (70%+) 90%-95% of materials are separated Minimize pollution of Landfills and Incinerators Competitive waste treatment costs Produce renewable electricity & high quality digestate Become Environmental leaders Create new green jobs 11 Customer’s motivations
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- 14. 14 New AD –Tel Aviv
- 15. Biogas content ~60% - 70% Methane 100 m3 biogas / ton organic MSW @ 60% Methane Heating value ~ 0.24 MWhr / ton of organic MSW Electricity Generation ~ 90 kWhr / ton of organic MSW CNG ~ 5.5 m3 biogas = 1 GGE – Gallon of Gasoline Equivalent 15
- 16. Estimated Figures 16 ArrowBio plant500 1000 1500 Daily Capacity 500 tons/day 1,000 tons/day 1,500 tons/day Annual Capacity 150K tons/year 300K tons/year 450K tons/year Biogas production* 30-40K m3/day 60-80K m3/day 100-120K m3/day Green Electricity* 3-4 MWh 6-8 MWh 10-12 MWh Consumed Electricity 1.5 MWh 3 MWh 4 MWh Workers 40 per shift 60 per shift 90 per shift Footprint 30,000 m2 40,000 m2 60,000 m2 Estimated cost USD 40 M USD 70 M USD 95 M * To be defined during Preliminary Planning Study, analyzing current situation, land, requirements, work split etc.
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