Combining proven long-distance circulation technology with clog-free, air-powered pumping, the new GridBee® AP Air-Powered Mixers from Medora Corp. are ideal for mixing activated sludge basins, both aerated and anoxic, having high total suspended solids (TSS). In aerated basins during off-peak flows, the aeration intensity can be reduced considerably to match the lower oxygen demand without losing the TSS, leading to substantial energy savings. In raw water ponds, lakes and estuaries, the AP mixers can provide blue-green algae (BGA) control and other water-quality improvements. Located just beneath the water surface, the air pump efficiently pumps up to 1,700 gpm while using only 2.3 psi of air pressure. Air can be supplied by the plant's existing air system or by Medora’s optional on-shore blower. Medora’s on-shore blower assembly is housed in a sound-attenuated enclosure and includes a drive system, blower motor, ventilation fan motor air filter and operating gauges.