NORTHERN NEVADA FEASIBILITY STUDY Researching Advanced Purified - PowerPoint PPT Presentation

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 activity focus – WaterSMART grant • Collaboration opportunities • Next steps • Nevada Water Innovation Campus

NORTHERN NEVADA FEASIBILITY STUDY Researching Advanced Purified Water Treatment Technologies Reclaimed Water Feasibility Study • 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

NORTHERN NEVADA FEASIBILITY STUDY Researching Advanced Purified Water Treatment Technologies Exception Quality A+ Water Potential • Groundwater augmentation, potable, recreational or 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

NORTHERN NEVADA FEASIBILITY STUDY Researching Advanced Purified Water Treatment Technologies

NORTHERN NEVADA FEASIBILITY STUDY Researching Advanced Purified Water Treatment Technologies Orange County Groundwater Replenishment System • 130 million gallons per day • Provides 25% of regional water supply • Reduces dependence on imported water • Pioneer in creating “agency legitimacy” movement

NORTHERN NEVADA FEASIBILITY STUDY Researching Advanced Purified Water Treatment Technologies Regional Feasibility Project Development Phase Activities Community Outreach Nevada Regulations Pilot Testing Technologies Demonstration Project Regional Feasibility Study created from Hydrogeologic recognized best Investigations practices Funding

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

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

NORTHERN NEVADA FEASIBILITY STUDY Researching Advanced Purified Water Treatment Technologies Task 1: Project Rationale and Justification for Potable Reuse Scope of Work 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 •

NORTHERN NEVADA FEASIBILITY STUDY Researching Advanced Purified Water Treatment Technologies Triple Bottom Line Assessment: Value Tree

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

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

NORTHERN NEVADA FEASIBILITY STUDY Researching Advanced Purified Water Treatment Technologies Task 2: Treatment Technologies that can meet Nevada DEP Regulations/ Requirements Scope of Work • 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

NORTHERN NEVADA FEASIBILITY STUDY Researching Advanced Purified Water Treatment Technologies Nevada Reclaimed Water Regulations Indirect Potable Reuse through Infiltration Basins

NORTHERN NEVADA FEASIBILITY STUDY Researching Advanced Purified Water Treatment Technologies Nevada Reclaimed Water Regulations Indirect Potable Reuse through Aquifer Injection

NORTHERN NEVADA FEASIBILITY STUDY Researching Advanced Purified Water Treatment Technologies Task 2 Recommendations: Treatment Trains Recommended for IPR Demonstration Spreading Basin IPR Project Train Injection Well IPR Project Train (Category A Effluent + Vadose Zone (Ozone-BAC AWTF) Treatment) Wastewater Secondary Treatment Wastewater Secondary Treatment Granular Media Filtration with Coagulation-Flocculation-Clarification Pretreatment Granular Media Filtration (CFC GMF) UV Disinfection Ozone-BAC (O3-BAC) Chlorination for Residual Maintenance (if needed) UV Disinfection Spreading Basin Effluent Polishing Vadose Zone/Soil Aquifer Treatment Chlorination for Residual Maintenance (SAT) (if needed) Saturated Zone Travel Time Injection Saturated Zone Travel Time

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

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

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 Scope of Work • Water Rights Development • Water Markets Evaluation • Regional Long-Term Climate Variability Analysis • Low Energy Treatment Technologies

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 (O 3 -BAC-UVAOP)

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

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

NORTHERN NEVADA FEASIBILITY STUDY Researching Advanced Purified Water Treatment Technologies Nevada Water Innovation Campus Kick off Reception August 24th

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