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Biological Treatment Equipment Design

  • Modifying aeration equipment for seismic activity.

    In seismically active areas, the support system for most grids will require some common modifications.

  • May vary, depending on your diffuser spacing.

    The recommended range is 12 inches to 48 inches with different considerations for low density versus high density diffuser spacing.

  • How does buoyancy impact aeration grid design?

    Accounting for the buoyant force of the pipe, along with the resulting vibrations, is critical for long term system integrity.

 

Designing Fine Bubble Aeration Grids

There are numerous considerations to keep in mind when designing a fine bubble aeration grid. Here are a few essential topics that will help you get started.

How buoyancy impacts aeration grid design
Factors to consider to determine the right grid arrangement
Determining header spacing for a fine bubble aeration grid
Understanding diffuser submergence & how close the diffusers should be positioned to the tank floor
Importance of complete and accurate tank dimensions
The types of materials used in constructing fine bubble aeration grids
Orifice size and its effect on air flow control
Explaining tapered aeration systems and how to design one
The role support systems play in aeration

Special Design Considerations for Fine Bubble Aeration Systems

Though less common, the following situations may be encountered when designing a fine bubble aeration system.

Accounting for high fluid velocity
Modifying your system to account for mixing forces
Modifying aeration equipment to account for seismically active areas
Accounting for high blower air and process water temperatures
Accounting for sloped floors in an aeration tank