Business Sector Source Separated Organics Contaminant Mitigation and Management: Source to Processor

Transcription

1 Business Sector Source Separated Organics Contaminant Mitigation and Management: Source to Processor Kentson Yan, Tamara Shulman, Janet Robins, Bob Spencer, Daryl McCartney, Jessie Kwasny, & Shannon Leblanc 17 September th Annual National Compost Conference Compost Council of Canada Gatineau, Quebec 1

2 Background University of Alberta ~ 53,000 students & staff Target: waste diversion 50% by Partnership with City of Edmonton, High Solids Anaerobic Digester 1,500 tonnes SSO per year Capital of Alberta Population: 878,000 Diversion rate = 90% by

3 Background Why Large Educational Institutions? Forefront of sustainability movement Inspire further involvement - Students, - Faculty, & - Staff Large population Large physical size Like a small municipality Experts Centres of learning and research Innovative solutions In-house experts 3

4 Background Campus-Wide Audits 2005 vs % population (weighted-campus users) 9% total waste (reduction) 10% material diverted (recycling/composting) Organics 56% Waste 8% Beverage containers 2% Paper & cardboard 9% Glass & light metals 3% Plastics 22% 28% waste-to-landfill per capita Landfill-bound Waste Composition in 2011 (weight, wb) 4

5 Objectives for today 1. Share some best management practices for source separation in ICI sector. 2. Share some current lessons learned at UAlberta. 3. Need for integration of source separation & central processing thinking... 5

6 Objective 1 Best Management Practices at Waste Stations User Support for SSO Programs 1. Ease of Use/Convenience Location/Visibility Sorting procedures 2. Ease of Understanding Signage Visual cues Messaging 3. Positive Involvement Outreach Incentives Relevance 6

7 Objective 1 Best Management Practices at Waste Stations Signage Clear, consistent terminology. Image-based, relevant. Negative/white space. Vivid, high contrast. Colour-coded. Slogan/tag line. 7

8 Objective 2 Lessons Learned at UAlberta Waste Station - Old Nine sorts. Microwave/sink block access. 8

9 Objective 2 Lessons Learned at UAlberta Changed Zero Waste Station Waste Station -New (SUB example) OLD NEW 9

10 Objective 2 Lessons Learned at UAlberta Updated Organics Signage OLD NEW Approaching icon 10

11 Amount of SSO (tonne, wb) Objective 2 Lessons Learned at UAlberta SSO Data from Student Union Building Sep Oct Nov Dec 11

12 % used bin correctly % Purity 100% Objective 2 Lessons Learned at UAlberta Purity & Correct Use of SSO Bins SUB Purity (mean = 92% 8% contamination) 75% 50% 25% 0% 100% 75% 50% 25% Week (after bins implemented) SUB Correct Use (partial or all material; mean = 19%) 0% Week (after bins implemented) 12

13 % used bin correctly Objective 2 Lessons Learned at UAlberta Correct Use & Participation Rate 100% 75% 50% 25% 0% Week (after bins implemented) Material Stream Percentage of users sorting correctly Variability Range Average Mixed Paper Low 60-75% 68% Recyclables Medium % 75% Organics Medium 7-38% 19% Landfill Low 75-94% 88% Average Low-medium -- 63% 13

14 SSO Material User Survey (97 users surveyed) Item Cardboard or fibre food container % Incorrect 49% Used paper towels 47% Paper plate (with some food on it) Most common incorrect placement (%) Mixed Paper (30%) & Landfill (13%) Mixed Paper (23%) & Landfill (23%) 45% Landfill (26%) Chopsticks 43% Landfill (31%) Used napkins 23% Landfill (16%) 14

15 Objective 3 Integrate Source Separation with Central Processing Pre- & Post-processing of SSO Contaminant removal to: Reduce operational problems. Improve the quality of compost and digestate. Pre: Bag breaking. Hand sorting. Shredding/size reduction. Wet density separation. Both: Size separation. Magnetic &/or eddy current separation. Air classification/ballistic separation. 15

16 Recovery of first unders (R <2" ) up to given time (%, by weight) Objective 3 Role of Central Processing Recovery of <2 at different Qs 40 Min rate (41 tph) Mean rate (60 tph) Max rate (75 tph) Operation time (min) 16

17 Summary & Conclusions 1. Take the time to learn, apply, & improve our best management practices. 2. Zero waste stations can significantly increase SSO recycling rates. 3. SSO recovery limits attributed to non food waste items. Will procurement & time help resolve this issue? 4. Lack of integrated, quantified research into source separation and pre- and post- processing equipment efficacy. 5. First research into central processing in decades next session at 4 PM (Ali Rajabpour et al) 17

18 Topics Covered Upcoming Training WASTE DIVERSION SYSTEMS INSTITUTIONAL, COMMERCIAL, INDUSTRIAL (ICI) SECTOR Learn about emerging best practices and proven methods for implementing a successful waste reduction and diversion Program. Sept 23-25, 2015 in Edmonton TOPICS COVERED: Integrated Waste Management Systems * Waste Characteristics and Composition * Onsite Storage and Collection * Reduced Environmental Impacts * Cost Savings * Stakeholder Engagement * Program Planning and Implementation Presented by Dr. Daryl McCartney Professor of Environmental Engineering at the University of Alberta and the Executive Director at EWMCE Who Should Attend Industrial Commercial and Institutional Facilities Managers Sustainability Professionals Waste Diversion Specialists Environmental Coordinators Educators Strategic planners with sustainability targets Tamara Shulman Environmental Planner with Tetra Tech with experience in waste diversion planning & implementation, in W. Canada IMPACT & EXPERIENCE Understand the basics of ICI waste management principles. Apply four key pillars to create successful waste reduction and diversion strategies: Policy and Legislation Management Systems and Governance Operational Infrastructure and Services Education and Promotion External & internal drivers for zero waste programs. The zero waste process: Conduct needs assessment. Policy & Vision. Management tools. Infrastructure & operations. Promotion & education. Strategy development. Action plan. Measure program performance. Review & improve. 18

19 Questions? Plaza Sur, Galapagos Islands 19 McCartney 2015