The utility model discloses a novel sediment storehouse water separating module, water separating module body including lower extreme open -ended box formula, the upper end detachable of water separating module body is fixed with the drainage board, there is a both ends confined water storage pipe bottom of water separating module body along vertical fixing, water storage pipe's upper end equipartition has a plurality of nozzle, the bottom surface middle part of water separating module body is equipped with the inlet opening, the bottom surface one end of water separating module body is equipped with the wash port, water separating module body detachable installs on the water separating groove of sediment storehouse lateral wall, realizes the water separating to the lime -ash. The utilitymodel discloses install water storage pipe and spray pipe additional in the water separating module, can carry out online cleaning to the mesh of drainage board, avoided the mesh jam, just the water separating module adopts the detachable mode to fix the water separating module on sediment storehouse water separating groove, changes the in -process, in the maintainer need not enter into the sediment storehouse, can accomplish the change to the water separating module outside the sediment storehouse.