1 / 23

Fort Worth Village Creek Water Reclamation Facility Energy Independence Project

This project aims to achieve energy independence for the Village Creek Water Reclamation Facility through the implementation of various energy-saving measures, such as waste-heat recovery, anaerobic digestion, and turbine-powered blowers.

dthornhill
Download Presentation

Fort Worth Village Creek Water Reclamation Facility Energy Independence Project

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 166 MGD permitted capacity • Regional facility serving more than 1 million people in 23 entities • Service area 450 square miles • One of the nation’s fastest growing cities City of Fort WorthVillage Creek Water Reclamation Facility

  2. Drivers to Energy Independence • VCWRF 2008 annual energy purchase $3.6M/yr. • Competition for Capital Improvement $$$$ • Guaranteed ESPC • Funding via municipal lease, cash reserves and ARRA Grant made the project affordable

  3. Water DepartmentScope: Energy Savings Project • ESPC Phase V/1&2: Water Reclamation Facility – Process Buildings Aeration Diffusers, Turbine Waste-Heat Recovery, Anaerobic Co-Digestion, Digester Mixing, SCADA System, Aeration Anoxic Zones, Aeration Control, Pumps & Motors • ESPC Phase VI-a: Water Reclamation Facility - Admin. Buildings. & Site Lighting, HVAC, Power Factor Correction Projects in Bold Red were Identified on 5 year Capital Improvement Plan

  4. Journey to Net Zero, Phase III

  5. Costs & Benefits

  6. Aeration Infrastructure renewed New 9-in membrane diffusers PTFE coating Include a 10-year manufacturer material warranty

  7. Anoxic Zones & Nitrate Rich Recycle

  8. SCADA System Replacement Project included the replacement of the existing Johnson Yokogawa SCADA system with a new Emerson Ovation SCADA Distributed Control System

  9. Waste Heat Recovery Heat Recovery Steam Generator (HRSG) on Turbine Exhaust generates steam Waste Heat Recovery Duct Burner Boost the temperature of the turbine exhaust to produce steam to power two steam turbines 9

  10. Steam Turbine Powered Blowers 2 unused 1200 HP 31,000 cfm blowers Rehab’d and equipped with steam turbine drivers 10

  11. Turn off electric motor blowers Pre Project: 2-3 @ 1000 HP + 1 @ 2200 HP

  12. Costs & Benefits

  13. Reciprocating Engines Generated Electricity Purchased Electricity

  14. kWh Savings Adding Up

  15. MOTOR DRIVEN BLOWERS Fitting the pieces together UNUSED BLOWERS HEAT RECOVERY UNIT 2250 1000 1000 1000 GAS TURBINE DRIVEN GENERATORS AERATION SYSTEM OVER 20 YEARS OLD ANAEROBIC DIGESTERS HEX WASTE HEAT FROM TURBINE EXHAUST HEATS DIGESTERS SOLIDS TO DEWATERING SCADA SYSTEM OVER 20 YEARS OLD

  16. MOTOR DRIVEN BLOWERS UNUSED BLOWERS HEAT RECOVERY UNIT 2250 1000 1000 1000 GAS TURBINE DRIVEN GENERATORS AERATION BASINS DIFFUSERS REPLACED ANOXIC ZONES ADDED ANAEROBIC DIGESTERS HEX WASTE HEAT FROM TURBINE EXHAUST HEATS DIGESTERS SOLIDS TO DEWATERING NEW SCADA SYSTEM

  17. 1 - STEAM TURBINE DRIVEN BLOWER MOTOR DRIVEN BLOWERS HEAT RECOVERY STEAM GENERATOR 2250 1000 CONDENSATE RETURN 1000 1000 ADDITIONAL DG TO OPERATE EXISTING GAS TURBINE DRIVEN GENERATORS AERATION BASINS DIFFUSERS REPLACED ANOXIC ZONES ADDED ANAEROBIC DIGESTERS CLEANED & ENHANCED MIXING HEX WASTE HEAT FROM CONDENSER HEATS DIGESTERS REDUCTION IN SOLIDS TO DEWATERING NEW SCADA SYSTEM

  18. 2 - STEAM TURBINE DRIVEN BLOWERS MOTOR DRIVEN BLOWERS HEAT RECOVERY STEAM GENERATOR 2250 1000 ADDITIONAL DG TO OPERATE DUCT BURNER CONDENSATE RETURN 1000 HIGH STRENGTH WASTE RECEIVING 1000 ADDITIONAL DG TO OPERATE EXISTING GAS TURBINE DRIVEN GENERATORS AERATION BASINS DIFFUSERS REPLACED ANOXIC ZONES ADDED ANAEROBIC DIGESTERS CLEANED & ENHANCED MIXING HEX WASTE HEAT FROM CONDENSERS HEATS DIGESTERS REDUCTION IN SOLIDS TO DEWATERING NEW SCADA SYSTEM

  19. Performance to Date Electric Consumption (1995-2013)

  20. Village Creek Electric Utility • In FY 2008 the City purchased $3.4M for electricity at Village Creek • Total Demand averaged 7 to 8 MW • Aeration Blowers • Primary Effluent Pumps • Other pumps & Odor Control Aeration Blowers the main consumer • Three to four blowers operated at a time • 1 - 2250 HP • 2 to 3 - 1,000 HP

  21. Recover Gas Turbine Waste Heat

  22. The Project • The project was delivered using the Energy Performance Contracting (PC) model • Energy savings funded all improvements identified in this project • Johnson Controls was the Energy Services Company (ESCO) for the project • Engineering provided by AECOM, Freese & Nichols, Vic Weir Consulting, and CDM Smith

More Related