Experts in Dissolved Air Flotation

KWI Group is the global leader in delivering Dissolved Air Flotation (DAF) for water and wastewater treatment systems for industrial and municipal applications.

With more than 4,700 installations in 77 countries, KWI excels in Industrial Waste Water Treatment, Biological Treatment, Process and Potable Water applications.

KWI Dissolved Air Floatation (DAF) solutions are based on proven process designs with exclusive, patented equipment and technology to meet our customers’ needs. The KWI brand name is synonymous with quality & efficiency and we strive for continuous improvement. Dissolved air flotation is very widely used in treating the industrial wastewater effluents from oil refineries, petrochemical and chemical plants, natural gas processing plants, paper mills, food processing (including those where a high proportion of oils, fats and greases arepresent), biological sludge thickening, potable or process water production, general water treatment and similar industrial facilities. Key market applications and case studies can be found at our expertise page

KWI works with long time experts in design and production departments. We focus on stainless steel production at a high quality level. In our Manufacturing facilities and product engineering group in Klagenfurt, Austria, all fabrication and  production systems are performed strictly in accordance with ISO 9001 and ISO 14001 quality standards. Intimate cooperation between R & D, product engineering and fabrication ensures continuous improvements in product function and cost.

Latest News

April 2, 2020

Finalization of another two stainless steel DAF units

Finalization of a circular and a rectangular DAF unit – a MNC 10 and a MCH 25 is currently being completed in our workshop in Austria. The Minicell is the simplest and smallest DAF clarifier in our KWI product range, especially designed for small flows from 16-450 m³/h. KWI Minicell has a number of advantages, including the high retention tank, the simple erection, the strong and reliable construction, low investment costs as well as a low energy consumption.   The Megacell …

March 19, 2020

Zvonko Kren is new CEO of KWI International

Zvonko Kren, water treatment expert with decades of experience, takes on the role of CEO of KWI International. Zvonko graduated in Dissolved Air Flotation at the Lenox Institute of Water Technology in Massachusetts. He collaborated with Dr. Krofta at the Krofta Italy branch. Beyond that, he founded his own company “Ekolon”. In the decades of cooperation between Ekolon and KWI, he brought a wealth of expertise into the company. Zvonko joined our …

March 16, 2020

Another completion of KWI's unique DAFF unit

A Klaricell is currently being completed in our workshop in Austria. This Klaricell 24 will be installed in a paper mill in Spain. Our client has developed an innovative product to produce biodegradable wipe. In his new process chain, the client needs a high quality water. As historical player in this industry, the client’s factory has very limited available space for the new production chain line. KWI Klaricell is perfectly adapted for such reliable high quality water in a compact footp…

March 13, 2020

ItN ceramic membranes training

Last week our sales team joined an additional training session about the ceramic membranes of our sister company ItN. In addition to the sales managers, many engineers of our technical department were interested in the highly efficient technology behind the ItN products. Many thanks to Chris Burleigh, Manager of ItN Nanovation AG for sharing his knowledge!   Please visit for more information on the ItN Ceramic Membranes.

Our Mission

The mission of KWI Inter­national is to fullfil the expectations of its business associates (customers, staff, suppliers, company owners, society and environment) to the best of its ability and is indicative of KWI’s success to date. The amongst the key management objectives are to strive for optimum ful­fillment of the require­ments and expectations of our customers as well as stringent safety and health protection of KWI personnel.

Our worldwide network

Customer service is our priority, so closeness to the customer is particularly important to us. In addition to our branches in France and UK as well as our sister company in Florida, we can proudly rely on an internationally established network of partners.The KWI group is at your service to select the best solution, both in terms of performances and cost effectiveness, for your water treatment scenario. Get in contact with our headquarter in Austria or our local branches to receive our consultancy.

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