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Trash Removal Methods For Improved Mechanical Emptying Of Pit Latrines Using A Screw Auger, Tracey Sisco, Tate Rogers, Walt Beckwith, Willy Chipeta, Rochelle Holm, Christopher A. Buckley, Francis L. De Los Reyes
Trash Removal Methods For Improved Mechanical Emptying Of Pit Latrines Using A Screw Auger, Tracey Sisco, Tate Rogers, Walt Beckwith, Willy Chipeta, Rochelle Holm, Christopher A. Buckley, Francis L. De Los Reyes
Faculty Scholarship
Trash in pit latrines is one of the largest challenges facing pit emptying technologies, including the powered auger (the Excrevator), developed for improved emptying in lower- and lower-middle income countries. This study focused on two trash removal methods in conjunction with pit emptying by the Excrevator: (1) simultaneous removal of trash with sludge and (2) manual trash removal prior to sludge removal. Simultaneous removal was tested by adding to the inlet of the Excrevator system two cutting heads designed to reduce the size of trash particles before entering the pipe and auger. Laboratory testing indicated that the auger will not …