Metro Wastewater Reclamation District Sustainability Study Nutrient - - PowerPoint PPT Presentation

Metro Wastewater Reclamation District Sustainability Study

Nutrient Work Group Presentation

July 13, 2010

Overview

• District Sustainability Goals
• District Vision Statement
• Successful Sustainability Programs
• Current District Practices
• Sustainable Decision Making

Sustainability Study Goals

• Document Current

District Currently Practices

• Develop District Wide

Sustainability Goals

• Develop Sustainable

Return on Investment (SROI) Framework

“Development that meets the needs of the present without compromising the ability

• f future generations to meet their own

needs.” ‐ Brundtland Commission

(The World Commission on Environment and Development, 1987)

Defining Sustainability

What is Sustainability to the District?

Water Quality Water Quality Social Social Environmental Leadership Environmental Leadership

Process for Developing the Sustainability Framework

• Workshop 1 ‐ Vision and Goal

Setting

• Workshop 2 ‐ Economics
• Workshop 3 – Environmental

and Social

• Workshop 4 – Sustainability

Analysis Framework

Sustainability Goals ‐‐ Environmental

• Portfolio Approach to

Optimize Power, Natural Gas, Water, Chemical Use

• Incorporate Sustainable

Principles into Facilities

• Enhance Water Quality

and Continue Environmental Stewardship of the River

• Limit Greenhouse Gas

Emissions Whenever Possible & Feasible

• Balance Competing

Environmental Priorities

Sustainability Goals ‐‐ Economic

• Optimize Power,

Natural Gas, Water, Chemical Use

• Maximize Resource

Recovery and Provide Flexibility to Market Changes

• Maintain Flexibility for

Processes to Meet Future Regulations

• Cost‐Effective for

Customers

Sustainability Goals ‐‐ Social

• Be an Asset to the

Community

• Be a Leader in

Sustainability

• Mitigate Odors
• Raise Awareness of

Environmental Benefits (Air Quality / Water Quality / GHG emissions)

• Form Partnerships to

Contribute to Sustainable Community Development

District Vision Statement and Sustainability Approach

• Provide Local, State

and National Leadership by Optimizing Resources to Supply Clean Water for Current and Future Generations

– Renewing Earth’s Resources

Characteristics of Successful Programs

• Sustainability Vision
• Establish Baseline
• Establish Goals, Targets and Indicators
• Localized Strategy for District
• Comprehensive
• Participation and Leadership
• Monitoring, Reporting and Communication

Current District Practices

• Robert W. Hite Facility

(RWHTF)

– Performed Survey of All Departments – Includes Extensive List

• Cogeneration, Water Reuse,

Treatment Optimization, Hybrid Vehicles, Biosolids Program, etc

– Continual Updating

• Northern Treatment Plant

(NTP)

– Eliminates a Number of Pump Stations – Consolidation – Off Loading RWHTF and other facilities – Facility planned to meet capacity and treatment needs today and 50 years from now

Assessment Plot - MWRD Energy Management System

0.0 5.0 10.0 15.0

Energy Audit Bench-marking/ Tracking Energy Use Energy Policy Energy Goals Energy Management Action Plans Training & Awareness SOPs/Operational Controls Measurement Adoption of Plan-Do-Check-Act, Management Systems Renewable Sources of Energy

Making Sustainable Decisions Based

• n the Triple Bottom Line

Sustainable Return on Investment Methodology

A Four Step Process to Reveal the Hidden Value in Projects

SROI Adds to Traditional Financial Analysis the Monetized Value

• f Non‐cash Benefits and Externalities

Sustainable Return on Investment

Project’s Cash Impacts Internal Non- Cash Benefits Project’s Cash Impacts

Capital Operations & Maintenance Water Quality Health & Safety Other (Community, Aesthetics) Green House Gases Criteria Air Contaminant Waste Financial Return Financial + Internal SROI

Sustainable Return on Investment (SROI) Flow Diagram

Cash

• Electricity Costs Impact
• Natural Gas Costs Impact
• Biosolids Utilization
• Operation & Maint. Costs

Impact

• Other Cash Impacts

Example of Benefits

Non-Cash

• Green House Gas Emissions Impacts
• Air Contaminant Emissions Impacts
• Water Quality Impacts
• Odor Impacts
• Safety Impacts
• Health Impacts

Costs

Capital Costs ($) Associated Maintenance Costs ($) Operating Cost Increases ($) Other Costs ($) Total Costs ($) Discounting (%) Total Benefits ($) Output Metrics ($) Reveals a project’s FULL VALUE

Example Structure and Logic Diagram

Example Analytical Results Provide Both Financial (FROI) and Sustainability Return on Investment (SROI)

The Sustainability “S” Curve to Optimize the Total Value of Projects