MDWASD Wastewater Energy Efficiency Master Plan

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MDWASD Wastewater Energy Efficiency Master Plan

Miami-Dade County, Florida

CES provided engineering design services to Miami-Dade County in an effort to develop remedial actions plans (RAPs) to bring over 350 pump stations up to energy efficiency standards and operating compliance. The recommended upgrades ensured compliance with the 10-hour run time per day limit. The development of this energy efficiency plan also incorporated the projected flows of these water pumps through the 2030 planning horizon.

The purpose of this task was to evaluate all aspects of the pump station, identify deficiencies, and provide energy efficiency recommendations in order to increase the critical station capacity and reduce pump run times below the 10-hour per day limit. The recommended improvements for individual pump stations would then be evaluated on a system-wide basis.

CES was specifically responsible for the following aspects of the WASD Energy Efficiency Master Plan:

  • Lift Station Design Improvements
  • Data Collection (run time, pump station maintenance histories, motor and pumping systems, and gravity collection and force main systems)
  • Modeling process and analysis for the force main systems
  • Pump capacity/system curves
  • Energy Efficiency Plan development (including impeller change-out, pump speed-increase, pump unit replacement, force main improvements, and pump station replacement)
  • Capital needs for improvement

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    The modified pump capacity/system curves served as the basis for developing recommendations regarding the pumping units and discharge system to meet the planned flow conditions. A cost analysis for the deficient pump stations was also provided in the report. The recommended improvements for individuals pump stations were subsequently evaluated on a system-wide basis.