Steam Electric Power Generating Water Management Challenges

Water and energy are critical interdependent resources. This universal relationship poses significant operational, financial and environmental challenges for which Heartland has emerged as a trusted partner with unique proven solutions.

FGD Purge Water, Landfill Leachate, Wastewater from Evaporation Ponds and Volume Reduction to ZLD

In particular, coal-fired steam electric power generation consumes tremendous amounts of water and generates large volumes of wastewater and wastewater byproducts. Three of the more difficult waste streams to manage are FGD purge water, leachate from power plant landfills, and wastewater from generating station evaporation ponds.

Heartland’s LM-HT® Concentrators offer unique proven approaches to treat these challenging waste streams in a single-step evaporative process without the need for pretreatment. Our reliable treatment system is capable of processing the diverse range of water chemistries found in evaporation ponds, FGD purge water and landfill leachate created from bottom ash, fly ash, boiler slag, and other FGD byproducts. Residuals may be further solidified using a proprietary process for landfill disposal, generally passing both the USEPA TCLP and Paint Filter tests.

Regulatory Framework

These waste streams must be managed and treated according to increasingly stringent regulatory requirements. The most prominent domestic regulations being the US EPA National Pollutant Discharge Elimination System (NPDES), the US EPA Effluent Limitation Guidelines and Standards for the Steam Electric Power Generating Point Source Category (ELGs, 40 CFR 423), and the Coal Combustion Residuals (CCRs or coal ash) Generated by Electric Utilities under the solid waste provisions, subtitle D, of the Resource Conservation and Recovery Act . In general, NPDES regulations and ELGs provide for specific limitations on the discharge of pollutants to surface waters throughout the United States while the CCRs establishes a comprehensive set of requirements for the disposal of coal combustion residuals in landfills and surface impoundments.

For the Steam Electric ELGs, the EPA found in 2009 that the current ELGs do not adequately address the pollutants being discharged. New, and likely more stringent ELGs, may address discharges associated with flue gas desulfurization (FGD) waters, coal ash transport waters, landfill leachate, as well as other regulated power plant waste streams. Likely pollutants of concern covered by these new regulations include metals (e.g., mercury, arsenic and selenium), nutrients, and total dissolved solids. It is projected that these revised ELGs may be released and published as early as September 2015.

Heartland LM-HT® ConcentratorThe Heartland Solution

Proven, proprietary LM-HT® Concentrator technology uniquely positions Heartland to offer the power industry simple, effective and reliable solutions to their flue gas desulfurization (FGD) purge water, landfill leachate and pond remediation wastewater management challenges.

Major advantages are offered in a single modular process that eliminates frequent downtime, arduous cleaning cycles and need for expensive combined evaporator / crystallizer process trains that generally require significant high-level technical support. These advantages are significant when compared to conventional evaporative processes such as falling film evaporators feeding crystallizers and further amplified by ability to use flue gas and/or waste heat sources for 100% of the required thermal energy to affect evaporation.

Site-specific layouts are engineered to integrate seamlessly with existing facility operations and reliably offer significant volume reductions of the targeted waste streams, up to and including zero liquid discharge (ZLD) capability.

Our team works with clients to provide customized solutions that offer superior operating performance, reliability, economics, regulatory compliance, and environmental responsibility compared to any competitors in the marketplace. For our clients, this places them at the forefront of corporate social responsibility and environmental stewardship.

Power Industry Services

Heartland offers clients a complete suite of services from project conception to ongoing operations. Services include engineering, design, manufacturing, construction, installation, training, solidification and stabilization services.

The HTP Advantage

Our power industry solution is unrivaled in the marketplace. Advantages to existing industry-standard technology include:

  • Lower initial capital costs
  • Lower ongoing operating costs
  • No pretreatment required for most wastewaters
  • Ability to process a wide range of water chemistries
  • Increased reliability and runtime.
  • Lower project cycle times from initial conception to operations
  • Ability to use flue gas and/or waste heat for 100% of thermal energy requirements
  • Reduced manpower requirements for operation
  • Full PLC controls integrated with plant operations

We invite you to learn more about our process and technology. For more information, please contact John Weigold @ jweigold@heartlandtech.com.