U.S. Patent #5,259,996

How it works

This invention is a free flowing, efficient, packaged, channel type aeration device that can be installed in new or existing treatment facilities at a reasonable cost.

The low profile cascade aerator relates to an open channel type aerator for use in a liquid containing basin, pipeline or channel. Specifically, the purpose of this unit is for raising the dissolved oxygen (DO) concentration level of the treated basin effluent.

The aerator is fabricated with a sloping bottom divided into a plurality of channels. Each channel is provided with a plurality of low head aeration baffles; staged to create velocity and pressure changes throughout the length of the channel. Air infusion plates are attached to the crest of the baffles for injecting air into the liquid.

Flow into each channel is controlled at the inlet by a weir or gate. The first stage channel is designed for the minimum flow rate of the treatment facility being served.

The refined small air bubbles and mixing created by the utilization of natural gravitational forces through controlled application of velocity, pressure differentials, baffles, air induction plates, baffle spacing, height, and controlled head over the baffles make the low profile cascade aerator efficiently effective.

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