NORTHERN NEVADA FEASIBILITY STUDY Researching Advanced Purified - - PowerPoint PPT Presentation

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NORTHERN NEVADA FEASIBILITY STUDY Researching Advanced Purified - - PowerPoint PPT Presentation

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NORTHERN NEVADA FEASIBILITY STUDY Researching Advanced Purified Water Treatment Technologies AUGUST 2, 2017 NORTHERN NEVADA FEASIBILITY STUDY Researching Advanced Purified Water Treatment Technologies Today's Topics Status update UNR

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NORTHERN NEVADA FEASIBILITY STUDY

Researching Advanced Purified Water Treatment Technologies AUGUST 2, 2017

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NORTHERN NEVADA FEASIBILITY STUDY

Researching Advanced Purified Water Treatment Technologies

  • Status update

– UNR activity focus – WaterSMART grant

  • Collaboration opportunities
  • Next steps
  • Nevada Water Innovation Campus

Today's Topics

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NORTHERN NEVADA FEASIBILITY STUDY

Researching Advanced Purified Water Treatment Technologies

  • Determine if Nevada’s newly adopted

Exceptional Quality Reclaimed Water (Category A+), which creates a regulatory pathway for indirect potable reuse, offers water management opportunities for the Truckee Meadows region.

– 5 Year effort (2016-2021) – $6-8 million

Reclaimed Water Feasibility Study

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NORTHERN NEVADA FEASIBILITY STUDY

Researching Advanced Purified Water Treatment Technologies

  • Groundwater augmentation, potable, recreational
  • r environmental uses
  • Storing and securing a drought proof water supply

for the future

  • Diversify the region’s water supply portfolio while

reducing reliance on the Truckee River

  • Governor’s Drought Forum recommended

advanced reclaimed water treatment investigations

Exception Quality A+ Water Potential

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NORTHERN NEVADA FEASIBILITY STUDY

Researching Advanced Purified Water Treatment Technologies

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NORTHERN NEVADA FEASIBILITY STUDY

Researching Advanced Purified Water Treatment Technologies

  • 130 million gallons per day
  • Provides 25% of regional water supply
  • Reduces dependence on imported water
  • Pioneer in creating “agency legitimacy” movement

Orange County Groundwater Replenishment System

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NORTHERN NEVADA FEASIBILITY STUDY

Researching Advanced Purified Water Treatment Technologies

Nevada Regulations Demonstration Project Pilot Testing Technologies Funding Community Outreach Hydrogeologic Investigations

Regional Feasibility Phase Activities

Project Development

Regional Feasibility Study created from recognized best practices

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NORTHERN NEVADA FEASIBILITY STUDY

Researching Advanced Purified Water Treatment Technologies

UNR Scope of Work

  • 3-1/2 year effort
  • $676,000 Contract
  • Krishna Pagilla, PhD

– Internationally Recognized Water Expert – Director – Nevada Water Innovation Campus

  • 3 PhD candidates:

– Laura Haak – Vijay Sundaram – Lydia Peri

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NORTHERN NEVADA FEASIBILITY STUDY

Researching Advanced Purified Water Treatment Technologies

Advanced Water Treatment Technologies Demonstration Project Tasks

  • Task 1: Project Rationale and Justification
  • Task 2: Treatment Technologies Evaluations
  • Task 3: Basis of Design
  • Task 4: Operating and Testing Plan
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NORTHERN NEVADA FEASIBILITY STUDY

Researching Advanced Purified Water Treatment Technologies

  • Identify regional economic, environmental, and social

benefits

  • Assess status-quo management of water and recycled

water resources

  • Develop a statement of opportunity for recycled water
  • Using “North Valleys” as the study area

Task 1: Project Rationale and Justification for Potable Reuse

Scope of Work

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NORTHERN NEVADA FEASIBILITY STUDY

Researching Advanced Purified Water Treatment Technologies

Triple Bottom Line Assessment: Value Tree

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NORTHERN NEVADA FEASIBILITY STUDY

Researching Advanced Purified Water Treatment Technologies

Task 1 Findings

  • Potable Reuse provides greatest benefits through environmental

criteria

– Groundwater quality may improve

  • Aquifer replenishment and decreased pumping from depleted wells

– Water stress (indicator of water security) will decrease in the North Valleys

  • Increased water resource size through aquifer replenishment
  • Potable Reuse also benefits social criteria

– Health risk assessment shows safety expected for removal of pathogens, regulated, and unregulated contaminants – Water conservation goals are expected to improve with PR

  • Larger pool of water resources available
  • Potable Reuse is more expensive than status-quo management

– Capital costs for treatment train upgrades and distribution system – Value is generated through creation of a new water resource

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NORTHERN NEVADA FEASIBILITY STUDY

Researching Advanced Purified Water Treatment Technologies

Task 1 Recommendations

  • Potable Reuse improves future water management

– Developing a new aquifer to increase local water resources – Adaptable management that can balance flood risk, drought supplies, conjunctive use, and well depletion – Removes need to export reclaimed water

  • Further study of Potable Reuse should fill in gaps and complete a

site and technology specific health risk assessment

– Literature shows wide variability in pathogen removal, DBP formation, and unregulated contaminant concentrations to influent

  • Local control may also correlate to additional external and

internal benefits

– Energy savings, air pollution, carbon footprint – Water quality improvements – Local employment

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NORTHERN NEVADA FEASIBILITY STUDY

Researching Advanced Purified Water Treatment Technologies

  • Nevada Proposed IPR Regulations and Requirements
  • Identify potential advanced treatment options
  • Evaluate case studies
  • Select advanced treatment train(s) for demonstration project
  • Provide technological justification for treatment process

selection

Task 2: Treatment Technologies that can meet Nevada DEP Regulations/ Requirements

Scope of Work

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NORTHERN NEVADA FEASIBILITY STUDY

Researching Advanced Purified Water Treatment Technologies

Nevada Reclaimed Water Regulations

Indirect Potable Reuse through Infiltration Basins

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NORTHERN NEVADA FEASIBILITY STUDY

Researching Advanced Purified Water Treatment Technologies

Nevada Reclaimed Water Regulations

Indirect Potable Reuse through Aquifer Injection

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NORTHERN NEVADA FEASIBILITY STUDY

Researching Advanced Purified Water Treatment Technologies

Task 2 Recommendations: Treatment Trains Recommended for IPR Demonstration

Spreading Basin IPR Project Train (Category A Effluent + Vadose Zone Treatment) Wastewater Secondary Treatment Granular Media Filtration with Pretreatment UV Disinfection Chlorination for Residual Maintenance (if needed) Spreading Basin Vadose Zone/Soil Aquifer Treatment (SAT) Saturated Zone Travel Time Injection Well IPR Project Train (Ozone-BAC AWTF) Wastewater Secondary Treatment Coagulation-Flocculation-Clarification Granular Media Filtration (CFC GMF) Ozone-BAC (O3-BAC) UV Disinfection Effluent Polishing Chlorination for Residual Maintenance (if needed) Injection Saturated Zone Travel Time

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NORTHERN NEVADA FEASIBILITY STUDY

Researching Advanced Purified Water Treatment Technologies

Task 3: Basis of Design for the Demonstration Project

Scope of Work

  • Determine Flows and Loads
  • Develop Specific Treatment Requirements
  • Perform Design Calculations
  • Evaluate Treatment Equipment Options
  • Summarize Design Criteria
  • Develop Conceptual Process Flow Diagram
  • Prepare Basis of Design Report for Spreading Basin IPR and

Injection Well IPR Demonstration Project

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NORTHERN NEVADA FEASIBILITY STUDY

Researching Advanced Purified Water Treatment Technologies

Task 4: Development of a System Testing Plan

Scope of Work

  • Contaminant Monitoring Plan
  • Sampling Plan
  • Critical Control Points (CCP)
  • Instrumentation Plan
  • System Testing Plan
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NORTHERN NEVADA FEASIBILITY STUDY

Researching Advanced Purified Water Treatment Technologies

Bureau of Reclamation WaterSMART Grant

  • $300,000 additional regional effort
  • $150,000 federal grant – 50% match by Washoe County
  • Water Rights Development
  • Water Markets Evaluation
  • Regional Long-Term Climate Variability Analysis
  • Low Energy Treatment Technologies

Scope of Work

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NORTHERN NEVADA FEASIBILITY STUDY

Researching Advanced Purified Water Treatment Technologies

LIFT Scholarship Exchange Experience for Innovation & Technology Program

  • Water Environment and Research Foundation scholarship
  • Utility personnel to visit other utilities
  • Lydia Peri selected
  • Hampton Roads Sanitation District (VA)
  • Advanced water treatment pilot (O3-BAC-UVAOP)
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NORTHERN NEVADA FEASIBILITY STUDY

Researching Advanced Purified Water Treatment Technologies

IWA Reuse 2017 – Long Beach, CA

International Conference on Water Reclamation and Reuse

  • Presentation of UNR tasks
  • Representation from UNR (faculty/students), Washoe

County and City of Reno

  • Team acknowledged for innovative

collaboration with NDEP as a model for regional project implementation

  • Regional pilot project recognized
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NORTHERN NEVADA FEASIBILITY STUDY

Researching Advanced Purified Water Treatment Technologies

Next Steps

  • Preparing for demonstration projects

– Procuring treatment equipment – Developing system testing plan – Hydrogeologic investigations

  • Collaboration with our Independent Advisory Team
  • Continue pilot testing treatment technologies
  • Regional team gaining expertise
  • Kick off Bureau of Reclamation grant work
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NORTHERN NEVADA FEASIBILITY STUDY

Researching Advanced Purified Water Treatment Technologies

Nevada Water Innovation Campus Kick off Reception August 24th

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NORTHERN NEVADA FEASIBILITY STUDY

Researching Advanced Purified Water Treatment Technologies

Thank you

Rick Warner, Senior Engineer

  • rwarner@washoecounty.us
  • Dr. Krishna Pagilla, UNR
  • pagilla@unr.edu