ABS Nopon disc diffuser system KKI 215
Membrane disc diffusers for reliable and energy-efficient fine- bubble aeration of tanks in wastewater treatment plants.
Suitable for normal continuous aeration systems as well as where intermit- tent aeration is required, e.g. biological nutrient removal and SBR processes.
Features
• Self-cleaning EPDM membrane with slits
• Membrane is fixed by a threaded screw-on ring
• Elastic non-return valve
• ABS Nopon wedge piece fixing to the pipe means that no glue, solvent or welding is needed in assembly
• Thread based fixing available as an option
• Wedge piece fixing makes it easy to increase, decrease or relocate diffusers when process requirements change
• Applicable to various pipe materials and dimensions
• Option for deep basins
• Possibility for future increase of aeration capacity by installing 300 mm PRF retrofit discs on existing KKI bodies
• Inlet air temperature is up to 80°C
Working principle
The membrane bulges and slits open during aeration by the pressure of compressed air.
The support plate distributes the air evenly over the entire surface of the membrane. Air is spread into small bubbles, when released through the membrane.
When the air flow is turned off, the pressure of the water above presses the membrane disc tightly to the support plate closing the small slits on the membrane. The non-return valve closes and makes sure that no water enters the pipeline.
