Activated Sludge Treatment Systems

A large slow speed surface aerator suspended from a platform in the middle of an aeration tank.

High speed surface aerator suspended from a bridge over the middle of several aeration tanks.

Pasveer Ditch sewage treatment systems, with a brush surface aerator suspended from small bridge.

A Pasveer ditch treatment system showing concrete ditch and surface aerators.

Radial flow final settlement tanks with half bridge scrapers.

Flat-bottomed aeration tank.

Arrangement of dome diffusers in flat-bottomed aeration tank.

Curved-bar screens.

A communinator installation.

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