Gulper

Hand-pump specially designed for sludge (e.g. for the emptying of pit latrines, septic tanks, aqua privies, anaerobic baffled reactors etc.). Manual sludge pumps are a relatively new inventions and have shown promise as being low-cost, effective solutions for sludge emptying where, because of access, safety or economics, other sludge emptying techniques are not possible. The pump works on the same concept as a water pump: the handle is pumped, the liquid (sludge) rises up through the bottom of the pump and is forced out of a tap (sludge spout).