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June 28, 2017 | 11:00 am - 12:00 pm

Combustion Turbine Plants – Innovative Wastewater Treatment Operations for Zero-Liquid-Discharge

This webinar will help you make informed decisions about CCGT and Simple Cycle plant wastewater treatment operations for Zero-Liquid-Discharge

With low natural gas prices and stricter environmental regulations on coal-fired power plants, highly-efficient combined cycle gas-turbine (CCGT) power plants are expected to grow to account for more than 50% of power produced in the United States in the next decade.  Like coal-fired power generation, CCGT plants have significant water utilization and treatment demands requiring National Pollutant Discharge Elimination System (NPDES) permits to ensure that receiving waters will achieve their water quality standards.

Water requirements within CCGT plants include high purity make-up water to the heat recovery steam generator (HRSG), water for injection into combustion turbines for power augmentation or NOx control, and make-up water for combustion turbine evaporative coolers, fogging systems, and cooling towers.  Of these water service requirements, cooling towers present the major impact on make-up water usage and wastewater discharge.  Some states are now promoting source water alternatives to utilizing fresh water, particularly for cooling tower make-up, such as “low purity” groundwater and reclaimed water from municipal wastewater treatment plants.  These alternative water sources can introduce high levels of suspended solids, colloidal materials such as silica, and bicarbonate alkalinity which contributes to calcium carbonate scaling on the cooling tower surfaces.

Key to minimizing the amount of wastewater discharged from the cooling tower recirculation loop is to reduce the amount of blowdown.  As the concentration of dissolved ions increases in the recirculating loop due to evaporation of water in the cooling tower, their level multiplies to several times beyond the make-up water conditions.  Some of the recirculating water must be discharged on a regular basis as blowdown when the level of impurities reaches the saturation level where deposits can form on condenser and heat exchanger tubes.

Through the innovative use of make-up water treatment using chemicals combined with membrane microfiltration, reverse osmosis, and Zero Liquid Discharge ZLD brine crystallization, high cycles of concentration can be achieved in the cooling tower.  KLeeNwater™ ZLD is a solution which minimizes the quantity of blowdown required to maintain the recirculating water dissolved impurities within a controllable range.

In this informative webinar, Mark Pastore, and David Martin, Director of Business Development & Technology, respectively for KLeeNwater LLC (a joint venture between Environmental Energy Services and ProChem Inc) will review key wastewater treatment challenges for today’s CCGT plants.  Topics presented will include:

  • Increasing “cycles-of-concentration” and to minimize cooling tower blowdown
  • Unique challenges of using reclaimed water from municipal wastewater treatments plants
  • Low quality groundwater issues for cooling tower make-up water
  • How KLeeNwater ZLD can address existing undersized and underperforming wastewater treatment equipment such as brine crystallizers
  • Providing KLeeNwater solutions for waste minimization for systems with air-cooled evaporative coolers
  • Compiling and analyzing real-time data using a KLeeNwater pilot system to optimize physical/chemical wastewater treatment operating conditions

Additionally, pilot data from similar applications will be presented. Attendees are encouraged to ask questions which will be answered during the Q&A session of the webinar. 

Who should attend:

  • CCGT Plant Managers
  • Plant Engineers
  • A&E and EPC Firms
  • CCGT Equipment OEMs



Mark Pastore | Director Business Development | KLeeNwater LLC


Mark Pastore is VP Clean Coal Solutions for EES, Inc. Mr. Pastore has been an expert in the field of fossil fuel treatment for acid gas emissions, slagging and fouling for 20 years. He has been instrumental in the deployment of EES Coal Treat Programs at several large coal fired power plants. Mark holds a BS in Chemistry from SUNY College at Purchase.


David Martin | Director Technology | KLeeNwater LLC

David Martin is VP Technology for ProChem, Inc.  Mr. Martin is an expert in the field of wastewater treatment for industries including chemical formulations, system design, and water reuse for 25 years.  He has been instrumental in the development and deployment of the I-PROTM technology for wastewater reuse in several large heavy industrial manufacturing facilities.  David holds a BS in Biology from James Madison University.