Thetys Pumps SRL
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Disc diffuser system type ABS – Thetys Pumps
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Disc diffuser system type ABS

Thetys Pumps / Products  / Compressors and aeration / Disc diffuser system type ABS

Disc diffuser system type ABS

A reliable solution for efficient oxygen transfer

The reliable disk diffuser system is one of the world’s most widely-installed fine-bubble aeration systems, available in four alternative diffuser models. Preassembled diffuser elements enable fast and easy installation. Retrofits are available to increase aeration efficiency.

Main benefits
  • Reliable and long-lasting
  • Low pressure drops and therefore higher efficiency
  • Possibility of future increase in aeration capacity
  • Quick and easy installation
  • Flexible layout design
  • High temperature endurance
  • Suitable for aggressive wastewater
Main applications
  • Aeration of municipal wastewater
  • Aeration of industrial wastewater, with some restrictions
Main design features
All diffusers have a built-in non-return valve which provides additional safety to the treatment process by preventing sludge infiltration into the aeration piping system when the air flow is interrupted. The KKI215, and PRK/PIK300 diffusers are interchangeable for retrofits, offering high flexibility.

Diffusers with EPDM rubber membrane discs:

PIK300 fine-bubble

  • Polypropylene main body and an antifriction ring to protect the membrane
  • Suitable for both continuous and non-continuous aeration processes

PRK300 fine-bubble

  • Strong main body, making it suitable for SBR, MBR, and MBBR processes
  • Antifriction ring protects the membrane
  • PRF300 retrofit for upgrading 215 mm diffusers to more efficient systems

KKI215 fine-bubble

  • Suitable for both continuous and non-continuous aeration processes
  • Special support for use in deep basin applications, in water up to 15 m deep

Sucoflow DS 20 fine-bubble

  • Ideal for high-density and retrievable aeration systems
  • Easy-to-fit thread connection
Key characteristics
Diffuser  diameter PIK300, PRK300: 336 mm

KKI215: 215 mm

Sucoflow DS 20: 500 mm

Membrane surface area KKI: 0.025 m²

PIK, PRK: 0.060 m²

Sucoflow DS 20: 0.183 m²

Operating range (+20°C; 1 013 mbar) KKI215: 0.5–4 m³/h

PIK300, PRK300: 1.5–8 m³/h

Sucoflow DS 20: 1–15 m³/h

Max. operating temperature: PRK300, KKI215: 80°C

PIK300, DS 20: 100°C

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