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RRT Design & ConstructionMelville, NY- Milwaukee, WI- Baltimore, MD -Orlando, FL

Syracuse, NY- Vestal, NY- Philadelphia, PA- Denver, CO

www.rrtenviro.com

MassRecycle R3 Conference

Pre-Processing MSW

For Organics Digestion Technologies

Ric Wahl, Senior Project Engineer

April 8, 2014

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RRT Design & Construction

Engineering, Construction and Consulting exclusively in the fields of Recycling, Materials Recovery and Waste Processing

Recycling Systems for Source Separated Recyclables– Single and Dual Stream Recyclables– Ferrous and Non-Ferrous Metals– Fiber – Plastics– E-Scrap

Waste Processing and Materials Recovery Systems – MSW – Commercial Waste Streams– Post Energy Ash Ferrous and Non-Ferrous Metals Recovery Systems

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Waste Preparation Systems for Downstream Technologies– WTE– RDF– Aerobic and Anaerobic Digestion– Advanced Conversion Technologies, Energy Recovery, Gas Production

Business Development and Facility Operations Consulting Services

RRT Design & Construction

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Celebrating our 25th Year in 2014

Over 400 Successfully Completed Projects

Over 70 Integrated Greenfield Facilities

RRT Design & Construction

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Project Scoping

1. Overall Project Scopea) Total Tonsb) Tons following Pre-System Concentration Activities, including Load Inspections,

Transfer Station Activities, etc.c) Tons to Tipping Floord) Tons to Pre-Processing Systeme) Tons to Digestion Systemf) Post Digestion Outputsg) Seasonalityh) Site Development, Existing or Greenfieldi) Available Infrastructure including Utilities, Scales, Rolling Stock, Operations & Maintenance

2. Waste Composition Pre-Processing Systema) Seasonality b) Compositional Rangec) Composition of Total Tonsd) Composition of Tons following Available Pre-System Organics Concentration Techniques e) Composition of Tons to Tipping Floor f) Composition of Tons to Pre-Processing Systems

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Project Scoping

3. Specifications of Digestion Systema) Organics Concentration Requirementsb) Moisture Requirements, if anyc) Bulking Agent Requirements, if anyd) Size Requirementse) Inorganic Materials Limitationsf) Feed Mechanismg) Digestion Cycle Requirements (Continuous, Batch, Hours, etc.)

4. Other Processing System Requirementsa) Recyclables Removal Requirementsb) Environmental Constraints

5. Outputs from Digestiona) Gas Processing b) Solids (Digestate) Processingc) Market Specifications

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Project Scoping and Development

Process Flow Diagram

Process Mass Balance

Preliminary Designs

Capital Budgets

Operating Cost Pro Forma

Revenue Projections

Waste Effluent Disposal Cost Projections

Overall Project Integrated Financial Pro Forma

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Organics Concentration TechniquesControlling the Incoming Waste

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Pre-System Concentrating Tip Floor

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Pre-Sort Systems

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Sizing Technologies

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Sizing Technologies

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Ferrous Removal

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Plastics Removal

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NF Removal

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Fiber, Textile & Film Removal

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Organics and Inorganic Separation

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Processing for AD

Note: Wet AD is depicted

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CONCLUSIONS1. Pre-processing systems themselves are but one aspect of an overall project. It must be

integrated with pre-system concentration efforts and post digestion processing and marketing requirements.

2. System modeling must include an overall process flow and mass balance.

3. Project modeling must be integrated to include all capital and operating cost requirements.

4. Incoming waste compositions must be understood and quantified.

5. Digestion system specifications must be quantified.

6. Requirements for removal of recyclables and inorganic materials must be quantified.

7. Post digestion system outputs must be quantified.

8. Post digestion marketing parameters for gas and other outputs (composted digestate) must be quantified.

9. Overall project management including engineering, design, construction and commissioning should be integrated.

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Our Mission To be the leading builder of solid waste processing and recycling

businesses in North America by applying advanced technologies and value-adding services.

WE FILL YOUR VISION

RRT Design & Construction