Krofta Air Dissolving Tube
Best-in-class Flotation


Faster Air dissolution, lower retention time
The Krofta Air Dissolving Tube (ADT) is the technological heart of every Krofta DAF system. Pioneered by Dr. Milos Krofta, the ADT revolutionized DAF technology by replacing traditional, bulky pressure vessels.
This compact yet powerful innovation offers faster air dissolution, reduced maintenance, and a smaller system footprint. Since its inception in the 1970s, the ADT has been a critical component in thousands of installations worldwide, earning its reputation as a trusted cornerstone of efficient water treatment.
Why the ADT Stands Out
- Exceptional Efficiency: The ADT dissolves air into water in just 8-12 seconds, a fraction of the time required by traditional pressure vessels.
- Space-Saving Design: Smaller and lighter than conventional systems, the ADT optimizes plant floor space.
- Low Maintenance: With no moving parts and a robust stainless steel construction, the ADT minimizes downtime and ensures longevity.
- Customizable and Adaptable: Easily retrofitted to existing DAF systems, the ADT meets diverse wastewater treatment requirements with precision.

How the Krofta ADT works
The ADT employs a combination of centrifugal force and advanced air dispersion technology to create microbubbles that facilitate superior flotation. Air is released across a proprietary air panel within the tube, generating uniform bubbles between 10-70 microns. These bubbles adhere to suspended solids, lifting them to the surface for removal. The vortex flow within the tube eliminates undissolved air, ensuring reliable and efficient performance.
- Microbubble Technology: The ADT produces microbubbles ideally suited for separating solids from wastewater. This ensures maximum flotation efficiency and superior water clarity.
- Advanced Flow Design: The vortex flow pattern eliminates excess undissolved air, preventing issues like water hammer or turbulence, which can reduce treatment effectiveness.
- Adaptable Nozzles: A specially designed inlet nozzle enables the ADT to accommodate varying waste streams, making it a versatile choice for industrial and municipal applications.

Highest efficiency. Lowest opex.
- Compact Efficiency: The ADT is six to nine times smaller than traditional pressure vessels, significantly reducing footprint requirements.
- Cost Savings: Reduced air and water consumption translates to lower operational expenses.
- Sustainability: By optimizing chemical and energy use, the ADT supports environmentally responsible operations.
A Future-Proof Solution
The ADT not only addresses today’s wastewater challenges but is designed to evolve with future demands. Its robust and modular design ensures seamless integration into existing systems, while its adaptability allows it to meet changing regulations and treatment requirements.
Krofta DAF. ADT inside.
The Krofta Advanced Dissolved Air Flotation (ADT) system powers the three flagship Krofta DAF technologies, each designed to address specific water treatment needs with unparalleled efficiency and sustainability:
- Krofta Multifloat: A versatile DAF system ideal for applications requiring high solids separation and sludge thickening, delivering superior performance in compact footprints.
- Krofta Supracell: The high-flow DAF solution designed for rapid clarification and recovery, offering unmatched efficiency and reduced chemical consumption for industrial applications.
- Krofta Sandfloat: Combines DAF technology with sand filtration for enhanced removal of fine particles and polishing of treated water, ensuring top-quality effluent.
These systems, driven by ADT technology, provide industry-leading solutions tailored to meet diverse water treatment challenges.
The ADT tube makes separation faster, cleaner, and more reliable.
Start Krofting. Contact us today.
Need a Krofta DAF? We are looking forward to sharing insights on the most efficient solution for your liquid-solid separation challenge.