Supporting tubes (6) with aerators (5) are balanced against buoyant force in water with the help of internal load. These are equipped with supports (7), which are placed on the flat bottom without further anchorage.

Air distribution pipeline against the axis of supporting tubes is aligned by couplings with external thread and horizontal axis. Air is transferred to each supporting tube by means of spherical valve (3), disconnecting screw joint (2) and coupling hose (4). The spherical valve and disconnecting screw joint shut off air transfer and disconnect the coupling hose when supporting tube is removed out of the tank.
Removing and reassembling of supporting tubes is done with the help of hoisting ropes (8).

Each supporting tube is equipped with a mechanism to drain condensed water from the air.
A tube is connected to the bottom of the supporting tube from the drainage cap (1) through the connecting tubing (4). After the drainage cap is opened and with the system operating fully, internal air overpressure discharges the condensed water from the supporting tube above the water level.

The standard type system is above all intended for smaller tanks with flat bottoms, accessible from both sides.

The standard type, if required, enables installation of the aerating system into filled activation tanks, otherwise mounting is executed into empty tanks.

Removal and reassembling of individual supporting tubes for the purposes of checking or repair can be performed under full operation without stopping the work or interruption of pumping.
Removal is performed manually ( 2 operators) without any hoisting device.