Town of North Hempstead, PWWCD, New York Biological Nutrient Removal (BNR) Demonstration Project Improvements

Posted on July 17, 2014

Client: Port Washington Water Pollution Control District
Location: Town of North Hempstead, New York
Project Period: 2003 - 2006
Project Cost: $500,000

Major Components

  • Planning
  • Permitting
  • Clean Water/Clean Air Bond Act Assistance
  • 3,000 Gallon Methanol Storage Tank
  • Leak and Level Detection Systems
  • Methanol Metering Pumps
  • Chemical Truck Transfer Containment Pad
  • Tri-Lobe Positive Displacement Aeration Blower
  • Return Activated Sludge Pump
  • Variable Frequency Drives/Controls
  • BNR Tank Baffle Curtain System
  • Caustic Storage Tank System Modifications
  • Maintenance of Plant Operations (MOPO)
  • Electrical Systems
  • Site Restoration

Project Description

TNH-PWWPCD-BioNutirentRemove-1The project includes improvements to the Biological Nutrient Removal (BNR) Demonstration Project to provide process and operational enhancements to the BNR process and improve flexibility to consistently, reliably and cost-effectively reduce the wastewater treatment plant’s nitrogen loadings to the Long Island Sound. The project received state grant assistance.

TNH-PWWPCD-BioNutirentRemove-2The project includes a methanol storage and delivery system, larger capacity aeration blower with variable frequency drive (VFD), return activated sludge pump with VFD, custom fabricated nylon baffle curtain to separate aeration and anoxic zones, modifications to caustic storage tank system, chemical cost reimbursement and miscellaneous supplies.

D&B Project Responsibilities

D&B’s responsibilities included project planning, NYS Grant Applications and Project Work Plan, permitting, design plans & specifications, bidding services, construction management services, and start-up & training services.

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