Apparatus for muffling and deodorizing a gas stream

An apparatus for use with a sewage pumper truck to muffle and deodorize an air stream, the air stream being generated by filling of a tank of the truck by connecting an inlet of a vacuum pump to the exhaust of the tank to evacuate the tank and suck waste material into the tank, the air stream exiting an outlet of the vacuum pump, said apparatus comprising a reservoir for containing a deodorizing liquid having a liquid surface, said reservoir having a reservoir inlet positioned above the liquid surface and connectible to the outlet of the vacuum pump, and a reservoir outlet;

• and an exhaust stack connected to said outlet of said reservoir;
• whereby outside air heated by ordinary action of the vacuum pump pulling through the tank, is passed through the reservoir over the liquid surface of the deodorizing liquid, evaporates a sufficient amount of the liquid to achieve the desired effect, and then leaves the reservoir and is blown out the exhaust pipe containing the evaporated liquid.