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20191113 jbfs presentation final

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The NYC DEP Feasibility study that takes a look at the current nitrogen removal efforts, where the four waste treatment plants are now in terms of Nitrogen loading reductions and future technologies that have been studied for possible implementation at these plants.

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20191113 jbfs presentation final

  1. 1. Jamaica Bay Feasibility Study November 13, 2019
  2. 2. Overview • Nitrogen Removal At Our Wastewater Resource Recovery Facilities • Shortlisted Technologies for Further Evaluation • Treatment Optimization Opportunities • A Focus on Ecological Health of the Bay 2
  3. 3. Purpose Jamaica Bay Feasibility Study required pursuant to First Amended Nitrogen Consent Judgment with NYSDEC Purpose: • Evaluate the latest nitrogen-removal technologies, and optimization techniques for existing infrastructure to identify potential measures to reduce nitrogen discharges from Jamaica Bay Wastewater Treatment Plants (WWTPs) and improve DO water quality. • The City will be able to use results of Feasibility Study to assist in determining which technologies, if any, may be appropriate for further upgrades or to support other regulatory decisions.
  4. 4. Timeline Relevant Dates June 2011 Effective date for First Amended Nitrogen Consent Judgment. July 31, 2016 Jamaica Bay Phase I post-construction monitoring commenced following completion of BNR upgrades to JA and 26W WRRFs. July 31, 2017 Jamaica Bay Feasibility Study commenced - 12-months after the start of Phase I post-construction monitoring. July 31, 2019 Draft of the Jamaica Bay Feasibility Study made available for public comment – 75 day comment period through October 15, 2019. January 31, 2020 Final study is to be released to the public; six-months after draft available.
  5. 5. Jamaica Bay WRRFs - Total Nitrogen 5
  6. 6. • Level 3 BNR with Chemical Addition achieved on average 77% TN removal compared to 28% TN removal from Pre-BNR Operation 26W Nitrogen Removal Performance 6
  7. 7. • Level 2 BNR with Chemical Addition achieved on average 75% TN removal compared to 40% TN removal from Pre-BNR Operation JA Nitrogen Removal Performance 7
  8. 8. • Currently removes on average of 42% of the influent TN load • Level 1 BNR – Projected Completion Fall 2022 Coney Island WRRF – Recent Performance 8
  9. 9. • Currently remove on average of 40% of the influent TN load • Level 1 BNR – Projected Completion Summer 2020 Rockaway WRRF – Recent Performance 9
  10. 10. Innovative Technology Evaluations Focus on Options for Jamaica WRRF and 26th Ward WRRF 10
  11. 11. Shortlisted Technologies for Further Evaluation Concepts Applicable to 26th Ward WRRF • Simultaneous Nitrification/Denitrification with Dynamic Aeration Control and Add-On Denitrification Process • Level 2/3/4 BNR and Add-On Denitrification Process Concepts Applicable to Jamaica WRRF • Simultaneous Nitrification/Denitrification with Dynamic Aeration Control and Add-On Denitrification Process • Level 2/3/4 BNR with Add-On Denitrification Process Concepts Applicable to Coney Island and Rockaway WRRFs • Simultaneous Nitrification/Denitrification with Dynamic Aeration Control • Level 3 BNR 11
  12. 12. Future Research Projects • Focus on Adaptation of Processes to NYC Conditions and Facilities • Membrane Aerated Bioreactors (MABR) • gas transfer membrane that delivers oxygen to a biofilm that is attached to the surface of the membrane • provides simultaneous nitrification and denitrification and requires less aeration energy • Simultaneous Nitrification/Denitrification (SND) • allows both nitrification and denitrification to occur in the same tank at low DO levels • biochemical mechanisms of nitrogen removal are complex and not completely understood, rendering operational control over an SND system difficult • Ammonia Based Aeration Control (ABAC) • Reduced aeration energy, supplemental carbon consumption 12
  13. 13. Optimization Opportunities – Enhanced Process Control • Intensive Contingency Sampling Program developed • Instrumentation to provide plant staff with added control over the BNR process DO Probes • DO control strategy allows for automated control of process air based on specified DO setpoints and inputs from DO probes Nitrate Probes • NO3 probe based strategy for glycerol dosing 13
  14. 14. Focus on the Ecological Health of the Bay Category Projects Ecological Technology • Algal Turf Scrubber Pilot Ecosystem Restoration • Sea Lettuce Harvesting Pilot • Eel Grass Study • Oyster Bed Pilot • Head of Bay Oyster Project • Ribbed Mussel Pilot Wetland Restoration • Paerdegat Basin Restoration • Marsh Island Wave Attenuator Study CSO Reduction • Historical CSO Abatement Projects • Paerdegat CSO Retention Facility • Bergen Basin Bending Weirs and Parallel Sewer to Jamaica WWTP • Environmental Benefit Projects (EBPs) • Jamaica Bay Tributaries LTCP • Green Infrastructure 14
  15. 15. Water Quality Monitoring Timeline Jamaica Bay PCM Phase II will begin after upgrades are complete at Rockaway WRRF and Coney Island WRRF for an additional three years of enhanced monitoring. 15 Date June 30, 2015 DEP submitted Work Plan for Jamaica Bay Post Construction Monitoring (PCM) (The Jamaica Bay PCM Work Plan was reviewed by a Technical Panel comprised of Dr. Linda Allen, Anand Kumaraswamy, and Dr. John Marra) July 31, 2016 Jamaica Bay PCM Phase I began (based on 26W Construction Completion) July 31, 2017 Jamaica Bay Feasibility Study was initiated July 31, 2019 Jamaica Bay Feasibility Study was released for public review January 31, 2020 Jamaica Bay Feasibility Study public release October 31, 2020 Jamaica Bay PCM Phase I End
  16. 16. Water Quality in Jamaica Bay 16 Total Nitrogen
  17. 17. Water Quality in Jamaica Bay 17 Dissolved Oxygen
  18. 18. Water Quality in Jamaica Bay 18 Temperature
  19. 19. Thank You! 19
  20. 20. Jamaica Bay PCM Sampling Program • Macroalgae and Marsh Grass Sampling • Macroalgae • Biomass • Intertidal • Subtidal • Carbon, Nitrogen, Phosphorus Content • Intertidal • Subtidal • Marsh Grass • Biomass (Shoots and Roots) • Carbon, Nitrogen, Phosphorus Content • Biological Studies (Benthic Invertebrates) • Densities • Diversity 20 • Physical and Hydraulic Characterization • Bathymetry • Tides • Currents • Ambient Water Quality Sampling • Grab Sampling • Continuous Sondes • Primary Productivity • Sediment Flux Measurements • Sediment Fluxes • Pore Water Data • Solid Phase Data • Benthic Studies • Benthic Algae • Sediment Composition
  21. 21. Jamaica Bay PCM Water Quality Stations 21
  22. 22. Jamaica Bay PCM Sediment Survey Stations 22
  23. 23. Jamaica Bay PCM Macroalgae Sampling Stations 23
  24. 24. Jamaica Bay PCM Marsh Grass Sampling Stations 24
  25. 25. Jamaica Bay PCM Benthic Invertebrate Survey Stations 25

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