Engineering and Operations Committee Item 6b September 10, 2018

Transcription

1 Engineering and Operations Committee Item 6b September 10, 2018

2 CA Recycled Water Regulatory Framework Demonstration Project Activities Regulatory Collaboration Testing Approach Independent Scientific Advisory Panel Construction Status Full-Scale Program Planning E&O Committee Item 6b, Slide 2 September 10, 2018

3 Non-Potable Reuse Irrigation Industrial Uses Indirect Potable Reuse Groundwater Replenishment Indirect Potable Reuse Reservoir Water Augmentation Increasing requirements for public health protection Direct Potable Reuse Raw Water Augmentation /TBD E&O Committee Item 6b, Slide 3 September 10, 2018

4 Main San Gabriel Basin Santa Fe Spreading Grounds Weymouth Plant West Coast Basin Central Basin Rio Hondo Spreading Grounds Diemer Plant JWPCP Orange County Basin OC Spreading Grounds E&O Committee Item 6b, Slide 4 September 10, 2018

5 Weymouth Plant Regional Board 4 Los Angeles Santa Fe Spreading Grounds Rio Hondo Spreading Grounds Diemer Plant JWPCP Regional Board 8 Santa Ana OC Spreading Grounds E&O Committee Item 6b, Slide 5 September 10, 2018

6 State Water Resources Control Board Division of Drinking Water Regional Water Quality Control Boards Los Angeles Region Santa Ana Region

7 2016 Program Introduction AWT Demo Process Design 2017 Prelim. Groundwater Assessments MBR Technology Acceptance 2018 Demonstration Testing and Monitoring Plan Workshop (Aug 9) 2019 Field Tour of Demonstration Plant Baseline Testing Data Review E&O Committee Item 6b, Slide 7 September 10, 2018

8 Chemical Feed Systems Reverse Osmosis UV Light/Advanced Oxidation Process MBR Membrane Modules MBR Aerobic and Anoxic Tanks E&O Committee Item 6b, Slide 8 September 10, 2018

9 Fine Screening Anoxic Basin Denitrification Aeration Basin Nitrification Membrane Modules Filtration E&O Committee Item 6b, Slide 9 September 10, 2018

10 Regulatory Approach Growing knowledge base from national and international research on pathogen removal in MBR systems Australia s MBR validation protocol outlines 3-tiered approach to achieve pathogen reduction credit California regulators concur with Metropolitan s proposed MBR testing approach utilizing this protocol E&O Committee Item 6b, Slide 10 September 10, 2018

11 MBR Technology Acceptance Final test plan to be submitted to regulators in early October for approval by end of 2018 Testing anticipated to begin early 2019 Pre-testing Equipment Testing and Process Acclimation (3 months) Phase 1 Baseline Performance Testing (4 months) Phase 2 Challenge Testing and Evaluation (8 months) Additional testing for process optimization and full-scale design criteria to follow E&O Committee Item 6b, Slide 11 September 10, 2018

12 Laboratory Analysis E&O Committee Item 6b, Slide 12 September 10, 2018

13 Title 22 Regulations require independent panel of experts to review alternative approaches for meeting existing regulations (e.g., application of Membrane Bioreactor) National Water Research Institute commissioned to secure panel for demonstration project Panel will help guide demonstration project Testing and Monitoring Plan Water quality and operational data MBR Technology Acceptance report Stakeholder engagement E&O Committee Item 6b, Slide 13 September 10, 2018

14 Ed Means Thomas Harder Paul Westerhoff Vernon Snoeyink Chuck Haas (Chair) Adam Olivieri Richard Bull Joe Cotruvo Michael Stenstrom* Kevin Hardy Facilitation Hydrogeology Drinking/Advanced Water Treatment Pipeline Corrosion/Water Chemistry Microbiology Regulations/Permitting Toxicology Chemistry Wastewater Treatment NWRI Administration E&O Committee Item 6b, Slide 14 September 10, 2018 *not pictured

15 Focus Areas/Panel Feedback Process Technology Testing Approach Operational Criteria Monitoring and Analysis Monitoring Frequency Analytical Methodology Source Control and Brine Mgmt Source Assessments Discharge Requirements E&O Committee Item 6b, Slide 15 September 10, 2018

16 Workshop Report Final ISAP report available by end of Sept 2018 E&O Committee Item 6b, Slide 16 September 10, 2018

17 Current Status and Schedule Construction approximately 65% complete Complete construction December 2018 Commence start-up and operation January 2019 E&O Committee Item 6b, Slide 17 September 10, 2018

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22 Conceptual planning and phasing evaluation Groundwater modeling Source control assessments and nitrogen management studies Institutional and financial arrangements Public outreach planning efforts E&O Committee Item 6b, Slide 22 September 10, 2018

23 Demonstration Plant Conceptual Planning Studies Report Assessment of IRP, Rates, and Terms Board Workshops on RRWP Construction Operations/Testing Studies Other Board Workshops Completion E&O Committee Item 6b, Slide 23 September 10, 2018

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