Green NAU
  • Climate Action Plan
    • Maximizing Resource Conservation and Efficiency
    • Purchasing Clean and Renewable Electricity
    • Decarbonizing District Heating and Cooling Systems
    • Electrifying NAU's Fleet
    • Creating a Culture of Sustainability
    • Greenhouse Gas Emissions Reporting
    • Cultivating a National Model of a Living Laboratory
  • Organizations
    • NAU Office of Sustainability
      • Office of Sustainability Staff
      • Legacy of Sustainability
    • Campus-Wide Sustainability Forum
      • Sustainability Forum Action Teams
      • Sustainability Leadership Awards
    • Green Fund
      • Green Fund Proposal
      • Green Fund Committee
  • Involvement
    • Portal to Action
    • Green Jacks
    • Energy Mentors
    • Academics
  • Sustainability
    • Careers with Impact
    • AASHE STARS Report
    • EV Charging
    • Recycling
      • Recycling on Campus
      • Composting
      • Glass Recycling
  • Campus
    • Dining
    • Grounds
      • Campus Gardens
      • LEED Buildings
      • Renewable Energy
    • Sustainable Transportation
      • Public Transportation
      • Yellow Bike Program
  • IN
  • Green NAU
  • BLUELINE Grizzly Compost Screen

BLUELINE Grizzly Compost Screen

Project Summary:

The Landscape and Outdoor Services Department optimized its large-scale campus composting facility through the strategic acquisition of a BLUELINE GRIZZLY screening system. Processing more than 4,000 cubic yards of organic waste annually—derived from campus dining halls, grounds maintenance trimmings, and organic material collected from the City of Flagstaff—the facility successfully diverts substantial tonnage from local landfills. This infrastructure upgrade modernizes operations by replacing an obsolete, high-maintenance unit that required recurring welding repairs with a durable mechanical separator featuring dual-size filtering decks. By efficiently sifting out oversized debris before the composting cycle, the specialized equipment accelerates organic decomposition timelines and elevates the overall quality and purity of the final soil amendment. Environmentally, the sustained operation of this infrastructure plays a pivotal role in carbon mitigation; processing approximately 175 short tons of organic matter allows the facility to sequester an estimated 23.8 metric tons of carbon dioxide equivalent annually. Ultimately, this capital improvement reduces university landfill fees and landscaping overhead while serving as a resilient model for municipal-university waste partnerships.

Project Lead:

James Owen Murphy

Project Advisor:

Matthew Muchna

Date:

2020-05-01

Funding Amount:

$24,330.75

Department:

Landscape and Outdoor Services

Supporting Documents

Welcome to Green NAU
Location
Room 464 Building 60
Student Academic Services
1100 S. Beaver St.
Flagstaff, AZ 86011
Mailing Address
1100 S. Beaver St. #15099
Flagstaff, AZ 86011
Contact Form
Email
Green@nau.edu
Phone
928-523-0517
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