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WASTEWATER TREATMENT PLANT NITROGEN REMOVAL IMPROVEMENTS , MAMARONECK, NY

Owner: Westchester County DPW
Engineer: Savin Engineers, PC
Contract Amount: $26,688,586
Start Date: December 2009

Retrofit six existing aeration tanks to incorporate new integrated Fixed Film Activated Sludge Process Modifications (IFAS)

Construction of new methanol metering pump facility including two 5000 gal. methanol day tanks, metering pumps, piping system and associated electrical and instrumentation.

Construction of two cast-in-place concrete channels for wastewater screening equipment.

Construction of new scum collection system in the Secondary Clarifiers consisting of automation of existing scum troughs and istallation of a new scum drive system.

New chemical facilities including:

  • Two underground 25,000 gal. methanol storage tanks, fill station feed transfer pumps and associated piping and valves
  • One 9,500 gal. sodium hydroxide storage tank
  • One 9,500 gal. ferric chloride storage tank
  • Contaminate structure with canopy cover, polymer feed system equipment, piping and valves

Electrical, instrumentation & controls, yard piping and site work.

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