Power Plant
Water Treatment

Power plant water treatment system for flue gas scrubber wash water cleaning.

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Flue Gas Condensate Cleaning System Liqtech (1)

Flue Gas Cleaning Technology for Power Plant Water Treatment

Optimize your power plant water treatment with the innovative industrial water treatment system, filtrating the flue gas scrubber wash water. LiqTech offers an innovative and superior flue gas scrubber wash water treatment solution ideal for the power plant water treatment process.

The system ensures that even the strictest discharge limits are always maintained. Furthermore, the flue gas cleaning technology makes condensate reuse possible for a more cost-efficient operation.

Today, more power plants convert from coal to biomass. With this conversion comes new requirements for cleaning flue gas scrubber wash water, which ultimately calls for superior power plant water treatment solutions. With a LiqTech power plant water treatment system, you are guaranteed filtration levels under the most extreme conditions without using polymers.

Moreover, the system facilities condensate reuse through additional treatment with reverse osmosis (RO) unit. This results in a remarkable reduction in waste-handling costs, providing a typical return on investment in less than three years. On top of this, multiple working hours are emancipated from traditional wastewater handling at power plants and district heating facilities.

  • Clean and reuse your condensate
  • Minimize your water consumption
  • Minimal maintenance
  • Guaranteed consistently high-quality water
  • Compliance with even the strictest discharge limits
  • Market-proven solution
  • Future-proof solution
  • Remote service & support 24/7 – anywhere in the world
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Turnkey Systems for Power Plant Water Treatment Processes

LiqTech’s flue gas cleaning system for power plants is available in various versions capable of handling flows from 0.1 m3/h to as much as 1000 m3/h, with options and accessories covering any needs.

With a LiqTech flue gas scrubber wash water treatment system, you will get a system requiring minimal maintenance and a built-in Cleaning-In-Place (CIP) system. It is possible to integrate backflush, precipitation, pre-treatment, remote monitoring, and control via an internet connection, etc. If your requirements need it, LiqTech Water offers other turnkey water treatment installations such as reverse osmosis (RO), nanofiltration (NF), carbon filter (GAC), and several other relevant technologies depending on your specific requirements.

The Technology Behind Flue Gas Wash Water Treatment

Our revolutionary ceramic silicon carbide membranes will provide you with a reliable and future-proof industrial water treatment solution for flue gas condensate and wet gas scrubber water.

Our flue gas cleaning technology for the power plant industry utilizes our patented silicon carbide (SiC) ceramic membranes, ensuring effective and consistent retention of particles, particulate matter, and heavy metals. SiC ceramic membranes provide stable operation even at a recovery typically as high as ≤95%. The SiC membranes are highly sturdy and thermal and chemical resistant, making them ideal for harsh industrial applications required by wet gas scrubber water and flue gas condensate.

Ultrafiltration (UF) membrane technology is based on pure mechanical retention of unwanted particles. This means that 100% of the wastewater volume is filtered by the membranes, providing consistent water quality of the treated water.

Membrane technology delivers a much more efficient removal of particles than conventional technologies like sand filters and adsorption filters due to the membranes' porosity being approx. 100 times closer than the media composition in, e.g., a sand filter.

As the superior filtration properties deliver high-quality treated water, consecutive water treatment processes such as NF, RO, EDI, UV, etc., have significantly improved operating conditions – typically with reduced operating costs.

Our SiC Technology

Features & Benefits

LiqTech System Benefits

Market-proven power plant water treatment solution for extreme conditions

  • Removal of heavy metals and other particulate matter from wastewater
  • Mechanical separation
    100% treatment of raw water passing the system, thus no risk of a direct pass of untreated water to downstream RO system
  • Higher removal rate than conventional technologies
    The SiC membranes offer higher filtration efficiency compared to media and bag filters, thus reducing operating costs on downstream RO system
  • Future-proof solution
  • Robust and efficient solution
  • Small footprint
  • Modular system design
  • Easy to increase capacity
  • Corrosive-resistant system
  • Compliance with the most stringent environmental requirements
  • Ensure quality water for discharge or reuse
  • Low energy consumption leading to cost savings

Silicon Carbide Membrane Benefits

Ideal for harsh applications

  • Highest flux for any membrane material
    With 2-3x the flux of other ceramics and up to 10x polymeric
  • Chemically inert pH 0-14
  • Thermally resistant up to 800°C
  • Hydrophilic material (water-loving)
  • Extremely hard & durable material 2930 +/- 80 kgf/mm³ (Vickers scale)
  • Low fouling
  • Abrasive Feeds
  • Low power usage and low pressure
  • Long membrane life
  • Low operational cost, low total cost of ownership
  • UF systems with these membranes have a small footprint and reduced energy cost since less pressure is required

Unique Properties - Unique Results

  1. Dirty Flue Gas Condensate Water Liqtech
  2. Clean Flue Gas Condensate Water Liqtech

We Are Filtration Experts

1 years of experience in the filtration industry
280 water treatment systems installed worldwide
Power Plant Scrubber Wastewater Filtration Process Liqtech

Power Plant Water Treatment Process

The flue gas scrubber wash water is transported into the power plants flue gas condenser and then into the LiqTech process tank and optionally to the pre-treatment application. Afterward, the pH-adjusted condensate is led into the LiqTech ultrafiltration power plant water treatment system. If added, a RO application makes it possible to directly discharge the clean water or reuse it for makeup water for the boiler after the treatment. This will minimize your water footprint and reduce waste-handling costs.

Flexible Installation Flue Gas Cleaning System Liqtech

Modular Design for Flexible Installation

With LiqTech’s innovative design, installing the flue gas cleaning system in tiny areas is easy because of its small footprint. The compact solution makes it possible to further increase capacity after installation if needed.

  • Separation of filter skid for ease of installation
  • Easy to increase capacity
  • Low maintenance

Power Plant Water Treatment Reuse Advantages

With a LiqTech power plant water treatment system, you can achieve financial gains and take care of the environment by reusing the retentate and permeate, thereby minimizing the discharge of a scarce resource.

With an efficient power plant water treatment system, removing particles, organic matter, and harmful heavy metals from flue gas condensate can result in high annual savings, as it did for one of our power plant customers. Dive into the case and the results here. Moreover, the ultrafiltration system makes a good foundation for further treatment, such as reverse osmosis and desalination, which opens the possibility of reusing the clean scrubber wash water as makeup water in the boiler. Thus, you reach the goal of maximum recycling and minimum discharge of a scarce resource. Furthermore, the treated water can be used as cooling and moistening slag from the incineration process.

Another example of waste reduction is the potential of spraying the residue from the ultrafiltration into the incinerator’s boiler, increasing the water content in the flue gas, enabling you to extract additional energy from the flue gas condensation.


Dive into the results LiqTech has delivered to our power plant customers.

  1. Power Plant Filtration Case (1)

    Utilty Case

  2. Flue Gas Condensate Case

    Flue Gas Condensate Cleaning Case

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Do you need more information about our power plant water treatment system? Please do not hesitate to contact us.

We are here to assist you!