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LiqTech International
LiqTech International makes silicon carbide ceramic membranes for marine scrubber water treatment and oilfield produced water filtration.
LiqTech International
Founded in 1999 and headquartered in Ballerup, Denmark, LiqTech International operates manufacturing facilities in Hobro, Denmark, where it produces silicon carbide ceramic membranes and filtration systems. The firm was originally known for diesel particulate filters but shifted focus toward water treatment applications as shipowners began adopting scrubber systems to comply with IMO 2020 sulfur emission rules. LiqTech's core technology is a silicon carbide membrane that withstands high temperatures and aggressive cleaning chemicals, making it suitable for treating difficult industrial wastewater streams. The company sells directly to marine scrubber manufacturers and oilfield service operators who need to remove oil and solids from produced water before reinjection or discharge. Commercial partners have included marine scrubber integrators and large shipowners operating in emission control areas, while the oil and gas vertical focuses on enhanced oil recovery applications in the Middle East and North American shale basins. As a public company listed on Nasdaq Copenhagen and quoted on the OTCQX in the United States, LiqTech disclosed total revenue of roughly $12 million to $18 million annually in recent reporting periods, with revenue split between marine and oil-and-gas end markets. The company maintains a manufacturing footprint in Denmark but sells globally, targeting shipyards in China and South Korea alongside energy operators in the Middle East and North America. LiqTech's structural differentiator is its status as one of the few publicly traded pure-play manufacturers of silicon carbide ceramic membranes for industrial water treatment, a niche that sits between process technology and environmental compliance. The company does not operate as an investment vehicle or family office but functions as an operating industrial technology developer, generating revenue from system sales, aftermarket replacement cartridges, and service contracts.
General information
Firm type
Asset Manager
Year founded
1999
AUM
Undisclosed
Location
Region
Europe
Country
Denmark
City
Ballerup
Corporate office
Ballerup, Denmark
Additional offices
Hobro, Denmark
Principals
Fei Chen
President and CEO
Sector focus
Frequently asked questions
What does LiqTech International manufacture?
LiqTech produces silicon carbide ceramic membrane filters used in industrial water treatment. Its primary applications are marine scrubber wash-water treatment and oil-and-gas produced water filtration. The membranes are designed to remove suspended solids and oil droplets from contaminated water streams.
How does LiqTech generate revenue?
LiqTech generates revenue by selling complete filtration systems, replacement membrane cartridges, and related service and maintenance agreements. The company sells primarily to marine scrubber manufacturers, shipowners, and oilfield operators. Revenue is reported under two segments: marine and industrial water treatment.
Who is the CEO of LiqTech International?
Fei Chen serves as President and CEO of LiqTech International. She has led the company through a strategic pivot toward marine and industrial water treatment applications. Chen was appointed CEO in 2022, succeeding interim leadership after the prior chief executive departed.
Where are LiqTech's manufacturing facilities located?
LiqTech manufactures its silicon carbide membranes and filtration systems in Hobro, Denmark. The company's corporate headquarters is in Ballerup, near Copenhagen. It sells products globally, with customers concentrated in Asia-Pacific shipbuilding and North American and Middle Eastern energy markets.
Is LiqTech International a family office or an operating company?
LiqTech International is an operating industrial technology company, not a family office or investment firm. It manufactures physical filtration products and reports financial results as a publicly traded entity on Nasdaq Copenhagen. Revenue derives from product sales, not investment returns.
What is LiqTech's connection to the IMO 2020 sulfur cap?
LiqTech experienced a surge in demand for its marine scrubber filters as shipowners installed exhaust gas cleaning systems to comply with IMO 2020 limits on marine fuel sulfur content. Scrubber systems generate wash-water that requires treatment before discharge, creating demand for LiqTech's ceramic filtration technology.
Does LiqTech International manage third-party capital or operate as an asset manager?
No. LiqTech is a manufacturer and technology company, not an asset manager. The firm does not invest capital on behalf of external clients, nor does it operate pooled investment vehicles. All revenue comes from product sales and associated services.
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