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Industrial Case Studies

Combined-Cycle Water Treatment System– USA

Key Benefits 

Combined-Cycle Water Treatment System
6,000-GPM raw water treatment system for cooling tower make-up - 1,200-GPM wastewater treatment system for cooling tower blowdown - Technology us...

  • Ability of ballasted clarification to handle changing river water quality and cold water temperature
  • Low total installed and operating cost of both packaged Clarifier and Discfilters

Project Background

Northeastern USA – A Northeastern USA utility converting a 400 MW coal-fired power station to a new 1,100 MW natural gas- fired, combined cycle power plant.


The Client’s Needs

The client was in need of both a raw water and wastewater treatment system for its new 1,100-megawatt (MW) natural gas- fired combined cycle power station that was being built to replace an existing 400-MW coal-fired plant that had been decommissioned previously.


Project & Technology Solutions

The client contracted Veolia Water Technologies to engineer, procure and supply a 6,000 gallons per minute (GPM) raw water treatment system and a 1,200-GPM wastewater treatment system.   
The raw water system utilizes two Actiflo® clarification units treating up to 6,000 GPM of water from the local river. The treated water will be used for both cooling tower make-up and service water for the plant.  
The wastewater system will treat 1,200 GPM of cooling tower blowdown prior to discharge back to the river.  It is processed in a two-step treatment consisting of two chemical reaction tanks for coagulation, precipitation and flocculation followed Veolia’s patented Hydrotech™ Discfilters.
By utilizing Veolia’s packaged technologies, such as Actiflo and Discfilter, the client not only was able to meet performance expectations but also reduced its total project installation cost.
Combined-Cycle Water Treatment System– USA Actiflo