• Technology
      • Back
      • Principles of Operation
      • Advantages
      • Animations
  • Applications
      • Back
      • Activated Sludge Treatment
      • Aeration
      • Aerobic Digesters
      • Anaerobic Digesters
      • Anoxic and Surge Tank Mixing
      • Blending
      • Equalization Tank
      • Intense Mixing for pH Control
      • Oxygen Transfer
      • pH Neutralization
      • Sludge Mixing
      • Sludge Treatment
      • Solid Suspension
  • Installations
  • Clients
  • Videos
  • Photos
  • PDF Resources
  • Happenings
  • Contact Us

Low Maintenance

A jet aeration system by Mixing Systems, Inc. consists of quality components that have an established reputation for reliability.

  • Materials of construction are durable and resistant to abrasion, corrosion, and ultraviolet light.
  • The jet nozzles used by Mixing Systems, Inc. have no moving parts that can wear out and no small passages to clog.
  • Pumps and blowers are normally placed outside the tanks where they can be easily serviced.

In addition, the system is designed and manufactured to minimize field installation labor. Jet assemblies and piping are typically fiberglass which is lightweight, adaptable and easily installed.

High Alpha Factor

Alpha factor is the ratio of the oxygen transfer rate in wastewater to the oxygen transfer rate in clean water. Alpha factor is dependent on the aeration device used and also on the presence of chemicals such as surfactants in the wastewater.

Jet aerators produce a high alpha factor in pulp and paper mill wastes. The high alpha factor is due to the presence of surfactants in pulp and paper wastewater.

Oxygen transfer is enhanced due to the high shear at the gas/liquid interface. Typical alpha factors achieved with various aeration devices are shown below.

Alpha Factor for Various Devices
Jet Aerators 0.9
Coarse Bubble Diffusers 0.8
Fine Bubble Diffusers
(Membrane of ceramic)
0.4
Surface Aerators 0.85

High shear aeration devices such as jet aerators yield a higher alpha factor due to surface renewal at the gas/liquid interface. Low shear aeration devices such as fine bubble diffusers (membrane or ceramic) yield a lower alpha factor because of insufficient renewal (oxygen saturation) at the gas/liquid interface.

All aeration systems are standardized for performance at standard conditions. Therefore, the process oxygen (AOR) is converted to standard oxygen (SOR) and is inversely proportional to the alpha factor. For this reason aeration systems with low alpha factors must be designed for a higher SOR.

 

Relative Oxygen Required (SOR)
Jet Aerators 100%
Coarse Bubble Diffusers 112%
Fine Bubble Diffusers
(Membrane of ceramic)
225%
Surface Aerators 106%

Energy Efficient

Jet aeration systems use less energy than other diffused aeration systems. In actual wastewater treatment plants, side-by-side comparisons have shown energy reductions of up to forty percent. Figures are similar when compared with pure oxygen or mechanical aeration systems.

Jet aerators have replaced low and high speed aerators at several installations. Lower operating power and lower maintenance costs have been the reason for all replacements.

Subcategories

Advantages

Page 6 of 6

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • Technology
    • Principles of Operation
    • Advantages
    • Animations
  • Applications
    • Activated Sludge Treatment
    • Aeration
    • Aerobic Digesters
    • Anaerobic Digesters
    • Anoxic and Surge Tank Mixing
    • Blending
    • Equalization Tank
    • Intense Mixing for pH Control
    • Oxygen Transfer
    • pH Neutralization
    • Sludge Mixing
    • Sludge Treatment
    • Solid Suspension
  • Installations
  • Clients
  • Videos
  • Photos
  • PDF Resources
  • Happenings
  • Contact Us

MIXING SYSTEMS, INC. · 7058 Corporate Way, Dayton, OH 45459, USA
Contact Prakash R. Bathija at: 937-435-7227
Email: mixing@mixing.com
Copyright © 2022. Mixing Systems, Inc.

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