Submersible Aerator Mixer Type ABS OKI

The OKI submersible aerator is a heavy-duty, non-clogging, gentle mixing unit which can operate both as an aerator and as a mixer for wastewater and water treatment in municipal and industrial plants. It is used for sludge stabilization in SBR, MBR, and MBBR processes.


OKI 1000 and 2000 submersible aerator/mixers are ideal for aerobic sludge stabilization, with both pre-thickening and contemporaneous thickening in the same tank. They can handle very high concentrations of suspended solids, up to 80 g/l in deep tank applications.


A full range of OKI 1000 and 2000 aerator/mixers is available, from 3 to 37 kW and with oxygen transfer rates up to 405 kg O2/h.

Main benefits

  • Liftable and selfstanding, making it easy to change of the plant configuration—no need to empty the tank
  • Suitable for all usual tank depths, especially deep tanks which no longer require air cooling
  • Designed for non-clogging operation
  • Suitable for both continuous and intermittent process operation
  • Can run as an aerator and/or mixer according to process requirements 
  • High Standard Oxygen Transfer Rate (SOTR) and Standard Aeration Efficiency (SAE) values

Main applications

  • Activated sludge basins and Sequence Batch Reactors (SBR), Membrane Bio Reactors (MBR), and Moving Bed Bio Reactors (MBBR), providing aeration and mixing in a single unit for degrading the biomass
  • Mixing and equalization basins, providing uniform wastewater loading to downstream processes and eliminating odors
  • Sludge storage and stabilization, providing odor control as well as oxidation of sludge
  • Flotation of oil and grease
  • Additional aeration

Key characteristics

Oxygen transfer:

up to 405 kg O2/h

Motor range:

3–37 kW

Switch to tab Documents