Description
KTM Micro-Bubble Generator
The Nikuni KTM is a compact, high-efficiency micro-bubble generator designed to produce pressurised, air-enriched “whitewater” for dissolved air flotation (DAF) and other mixing/micro-bubble applications. By combining three functions in one machine—air induction, air-water dissolution, and pumping—the KTM simplifies DAF systems, reduces ancillary equipment, and cuts running and maintenance costs.
How it Works
The KTM uses a regenerative turbine stage to shear and dissolve induced air into the recirculating water stream, creating a stable micro-bubble suspension (whitewater). This whitewater promotes rapid attachment to suspended solids, improving flotation and clarifying performance in DAF systems—without a separate compressor in many cases.
Model Options
Mounting: Base-mounted / close-coupled monoblock (varies by size)
Materials: Cast iron/SS (F) or all-stainless (N/S), SS316 optional
Electrical: 50 Hz (NZ standard); 60 Hz versions available
Dimensions & Datasheets
Detailed dimensions, curves, and wiring info available – get in touch and we’ll send the right pack for your duty and material selection.
Talk to a Specialist
We size KTM units to your solids load, recycle ratio, and plant hydraulics.
👉 Get in touch: sales@pumpandvalve.com
📞 Or call us on 0800 786 774
Nikuni by KTM Official Webpage
Three functions in one unit – induces air, dissolves it via a precision turbine impeller, and pumps whitewater to the flotation tank/process.
High dissolution efficiency – turbine technology and unique hydraulic design achieve very effective air-into-water dissolution (excellent whitewater stability).
Simplified DAF operation – often eliminates compressors and ancillary vessels, reducing footprint and complexity.
Compact, easy retrofits – small footprint; ideal for upgrading existing DAF plants.
Lower power & maintenance – efficient process, smaller motors, and a robust, simple construction.
Materials – “F” models with cast-iron wetted parts (SS impeller/shaft); “N/S” models in SS304 (SS316 optional).
- Food, beverage & dairy wastewater (including seafood, poultry, bakeries, laundries)
- Drinking-water treatment & desalination
- Municipal wastewater, power stations
- Automotive, chemical, petroleum/oil & gas
- Paper mills & textiles
If you’re unsure, we’ll size a unit for your process.
Reference duty points below are at 0.4 MPa discharge and ~8% air injection. 60 Hz models available on request.
| Model | Water Flow (L/min) | Water Flow (m³/h) | Air Flow (nL/min)* | Motor Power |
|---|
| KTM20F/N | 17 | 1.0 | 1.3 (0–5) | 0.75 kW / 2-pole |
| KTM25F/N | 25 | 1.5 | 2.0 (0–5) | 1.5 kW / 2-pole |
| KTM32F/N | 50 | 3.0 | 4.0 (0–10) | 2.2 kW / 2-pole |
| KTM40F/N | 80 | 4.8 | 6.4 (0–20) | 3.7 kW / 2-pole |
| KTM50F1(D)/S1(D) | 133 | 8.0 | 11.0 (0–20) | 5.5 kW / 4-pole |
| KTM50F2(D)/S2(D) | 200 | 12.0 | 16.0 (0–20) | 7.5 kW / 4-pole |
| KTM50F3(D)/S3(D) | 250 | 15.0 | 20.0 (0–30) | 11 kW / 4-pole |
| KTM65SF2(D)/S2(D) | 333 | 20.0 | 27.0 (0–40) | 15 kW / 4-pole |
| KTM80SF(D)/S(D) | 700 | 42.0 | 56.0 (0–80) | 22 kW / 4-pole |
* Air-flow bracket indicates recommended flow-meter range. Materials key: F = cast-iron wetted parts with SS impeller/shaft; N/S = SS304 (SS316 optional).
