Glsd mass recycle march 29 2017
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The Greater Lawrence Sanitary District conducted a feasibility study which concluded that co-digesting up to 380 wet tons per day of source separated organics at their wastewater treatment plant is feasible. They have received financial assistance and permits and plan to begin witness testing in spring 2017. Challenges have included financing, community acceptance, securing feedstock, and managing air pollution and maintenance costs.
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Glsd mass recycle march 29 2017
- 1. GREATER LAWRENCE SANITARYGREATER LAWRENCE SANITARY DISTRICTDISTRICT Update on…Update on… Organics to Energy ProjectOrganics to Energy Project MassRecycle 2017 R3 ConferenceMassRecycle 2017 R3 Conference March 27, 2017March 27, 2017
- 2. TOPICSTOPICS • Background on the Greater Lawrence Sanitary District (GLSD) • Organics Feasibility Study • Implementation Schedule • Overview of Organics Project • Processed Source Separated Organics • Successes/Challenges • Questions?
- 3. GLSD ORGANIZATIONGLSD ORGANIZATION • District Established by Chapter 750 of the Massachusetts Acts of 1968 • Governed by a Board of Commissioners • Operational Since April 1977 (40 years old) • Second largest WWTP in Massachusetts (52 MGD design flow ) • Serves: o Lawrence, Methuen, Andover, North Andover, Dracut, MA and Salem, NH o Population of over 200,000 o As Septage disposal location for 40 communities
- 4. • Co-digestion at the GLSD facility is feasible with proper revenue stream • Ability to process ~28,000 gpd (117 wet tons) of SSO (source separated organic) material in existing digestion system • May process up to 92,000 gpd (380 wet tons) of SSO material with a 4th digester • Can meet up to 40% of the Commonwealth’s goal for SSO Diversion FEASIBILITY STUDY CONCLUSIONSFEASIBILITY STUDY CONCLUSIONS
- 5. SCHEDULE
- 14. ©2016 Waste Management – Proprietary & Confidential Information WM CORe® Organics to EBSTM Page 14 CORe® SSO Receipt Hopper & Bioseparator EBS™ Product EBS™ Mixing & Storage Tank
- 15. ©2016 Waste Management – Proprietary & Confidential Information WM Engineered BioSlurry • Characterization of WM EBS™ – pH: 3.5 – 9.0 – Volatile Acids (Acetic Acid Equivalents): Less than 15,000 mg/L – Total Solids: 12.0 – 16.0% – Volatile Solids (% of Total Solids): 85 – 95% – Total COD: Greater than 180,000 mg/L – Total BOD: Greater than 80,000 mg/L – Screening 2 stage (15mm to 6mm) • Energy Potential – 1 ton of Source Separated Organics ~2.5 to 3.0 MMBTU/d EBS™ Characteristics: Page 15
- 16. SUCCESSESSUCCESSES • $9.8 M in Financial Assistance • Community and Environmental Impact Study • Amended Host Agreement • Fully Permitted • Interconnection Agreement Executed
- 17. CHALLENGESCHALLENGES • Financing an Atypical Wastewater Project (Costs vs. revenues) • Understanding the Risks • Community Acceptance • Securing Feedstock • Air Pollution Control and Engine Maintenance Costs • Market Analysis
- 18. QUESTIONSQUESTIONS Benjamin R. Mosher, P.E, BCEE Principal, CDM Smith 603-222-8381 mosherBR@cdmsmith.com Richard E. Weare GLSD Capital Projects Manager 978-685-1612 rweare@glsd.org Cheri R. Cousens, P.E. Executive Director 978-685-1612 ccousens@glsd.org