SELF PROPELLED SEWAGE SLUDGE EXCAVATOR

摘要

Apparatus for removing dried sludge from the upper surface of a drying bed in a sewage treatment plant including an excavator which has a plurality of double tined conveyor scoops which travel in an endless path to remove caked sludge from the drying bed and deposit it onto a conveyor. The excavator is positioned for reciprocation above the bed in parallel rows with the double tined scoops enabling excavation in both directions of movement of the excavator along the parallel rows. The trailing edge of the scoops is prevented from cutting into the sand as the scoops commence their upward movement after being charged with the sludge.