supply and delivery of cesspool tankers to colachel municipality re tender supply and delivery of cesspool tankers to colachel municipality. , cesspool tanker machine is used for collecting the effluent from sewer & drain water lines with the principle of generating high vaccum in the sludge compartment for siphoning liquids slurry, sludge and other materials from depth. the equipment will extract the sludge and slurry under high vaccum through a suction hose connected to the tank by a quick release hose coupling. the contents of the sludge tank will then be transported to any desired destination for disposal and emptied by means of gravity/ pressure discharge (block back arrangement).(including gst)