Marine Scrubber
Water Treatment

Market-proven filtration solution for exhaust gas cleaning systems


Learn more about the solution
Marine Scrubber Water Treatment Liqtech (1)

LiqTech & The IMO Sulphur Cap

We have long-term experience working with top marine scrubber manufacturers, shipowners, and shipyards, and we have a market-proven solution.

In January 2020, the International Maritime Organization (IMO) implemented a new lower cap on Sulphur emissions for international shipping. Inside the Emission Control Areas (ECA) the regulations are even stricter.

We are here to remove unburned fuel oil, soot particles, and ash and heavy metals from water, and to take an active role in reducing world pollution. We care about the future, and at the same time about growth. We see it as our mission to enable companies to grow stronger while meeting the environmental demands of tomorrow. That means the world to us.

LiqTech has developed a compact and efficient wastewater treatment system for both closed-loop and hybrid scrubbers that outperform discharge limits regulated by the IMO. Working with the market leaders for several years, we have successfully installed both retrofit and new-build systems on hundreds of vessels.

  • Market-proven
  • Ideal for retrofit installation
  • Future-proof solution
  • Selected by market leaders
  • Guaranteed compliance with IMO discharge regulations
  • Remote service & support 24/7 - anywhere in the world
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Process & Modules

LiqTech marine scrubber wastewater system - a customized solution based on your requirements.

LiqTech’s 7th generation scrubber wastewater treatment system (MK7) is a water treatment unit designed to remove soot and other particles captured by the scrubber process, producing a permeating quality with an NTU/FNU value well below 25.

We have different solutions based on your ship's requirements.

See Process & Modules Brochure

Proven Solution

1 years of experience in the filtration industry
230 marine scrubber wastewater systems installed worldwide

Selected by Market Leaders Worldwide

Hundreds of vessels are already compliant with future environmental requirements.

LiqTech's marine scrubber wastewater systems are installed on hundreds of vessels worldwide. Our references from industry leaders include vessels such as cruise ships, Ro-Ro passenger ships, Ro-Ro cargo ships, container ships, bulk carriers, tanker ships, etc.

The water treatment solution from LiqTech secures compliance with environmental requirements and reduces the handling costs of scrubber sludge. We have experience with all types of alkali used (MgOH, MgO, NaOH, Na2CO3).

  1. Marine Scrubber Water Treatment Container Ship - LiqTech
  2. Scrubber Water Treatment - LiqTech
  3. Marine Scrubber Wastewater System Container Ship - LiqTech
  4. LiqTech Marine Scrubber Wastewater Reference - Cruise ship
  5. LiqTech Marine Scrubber Water Treatment Reference - Cruise Ship
  6. Cruise Ship Marine Scrubber Wastewater Reference - LiqTech

Water Treatment with Superior Properties

For more than two decades we have manufactured products of recrystallized Silicon Carbide (SiC). Our Silicon Carbide membrane technology and systems will provide unique advantages for your business.

Benefits of the LiqTech Systems

  • Constant IMO-compliance
  • Minimal sludge production and handling cost in combination with dewatering
  • Most robust membrane technology providing system durability
  • Mechanical separation, providing consistently high water quality
  • Highest recovery rate in the market
  • Capable of heavy metal removal
  • Fully automated solution
  • Flexible system for different sailing profiles
  • Modular system design for flexible installation and capacity upgrades
  • Low-pressure system with low energy consumption

Benefits of SiC Membrane Technology

  • Unmatched flux
    SiC membranes have the highest flux of any membrane
  • Small footprint
    One of the smallest footprints for complete systems in the market
  • Excellent thermal properties
    Our SiC membranes can withstand temperatures of 800°C
  • Unmatched performance
    High performance, low total cost of ownership and low maintenance
  • Chemically inert
    Our systems can withstand the full pH spectrum of 0-14
  • Efficient cleaning
    Any chemical can be used for cleaning, resulting in very low membrane fouling
  • Robustness
    SiC is the second hardest material in the world next to diamonds
  • Long service life - less maintenance
    Fully automated system with less downtime and stable operation
Marine Scrubber Wastewater Filtration Process Liqtech

Filtration Process for Marine Scrubbers

Our solution will treat the water from the scrubber tower, and then it is sent back to the scrubber tower for reuse. This enables the scrubber to run in a “closed-loop” with no wastewater discharged overboard. Instead, the SOx particle is filtered and concentrated in our Silicon Carbide membranes and further dewatered in a filter press, providing bulk discharge of dry waste to a waste handling station while in port.

Liqtech Modular System Design Industrial Wastewater

Modular Design for Flexible Installation

With LiqTech’s innovative modular design, it is easy to install the marine scrubber wastewater solution on retrofits and new builds. The solution makes it possible to further increase capacity after installation if needed.

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

Marine Scrubber Wastewater Brochures

Download brochures

  1. Service and commissioning marine

    MK7 Brochure

  2. LiqTech system testing

    MK7 Process & Modules Brochure

Do you want to know more?

If you need more information about our marine scrubber water treatment, please do not hesitate to contact us.

Thank you for your message.

By the way, did you know that by 2025 we have to prevent and significantly reduce marine pollution of all kinds (UN Sustainable Development Goal 14 - Target 14.1).

We are ready to help you