<p>An air pumping and scrubbing apparatus which is suitable for use in spray paint booths is described. This apparatus uses liquid sprays directed into a conduit to cause an air pumping action to inject air into the conduit and discharge to atmosphere using water pressure to move the air so as to avoid the necessity for any moving parts or electrical connections in and around the air stream. The liquid sprays impinge on mist eliminator strips and are recovered along with foreign material from the air while the air is exhausted downstream of the strips. A novel transfer plate arrangement is provided between the strips and a sump to minimize foreign material buildup on structural surfaces while allowing stratification in the sump; and novel baffle means are provided to cause a controlled air blowback across the sump to facilitate collection of the floating material therein.</p>
