APPARATUS FOR CLARIFYING A SLUDGE-CONTAINING EFFLUENT

摘要

Apparatus for clarifying a sludge-containing effluent, comprising a clarification basin (2), at least one arm (7) able to move over the upper surface of the liquid in the basin; at least one trough (8) supported by the arm so that it can be immersed over part of its height in the liquid of the basin, suction tubes (T1, T2) held relative to the trough, each tube comprising at the top a vertically adjustable sleeve (B1, B2) opening into the trough, and a means of removing sludge from the trough; the sleeve (B1, B2) of at least one suction tube (T1, T2) is free to slide vertically relative to the mobile arm (7) supporting the trough, and to the tube (T1, T2) and a reserve of buoyancy necessary and sufficient for keeping the overspill end (E1, E2) of the sleeve in the trough (8) continuously out of the water is installed on the sleeve (B1, B2) so that the overspill level of the sleeve adjusts automatically in relation to the level (16) of liquid and sludge in the trough.

主权项

1. An apparatus for clarifying a sludge-containing effluent, comprising:
a clarification basin for clarification by settling of sludge that is deposited on the bottom of the basin while clarified water is evacuated at the upper level of the basin; at least one arm able to move above the upper level of the liquid in the basin to sweep all the surface of the liquid; at least one trough supported by the arm, so that it is immersed over part of its height in the liquid in the basin; suction tubes held relative to the trough, extending downwardly toward the bottom of the basin, each suction tube including at the top a vertically adjustable sleeve opening into the trough at a level lower than the level of the liquid in the basin, the downwardly extending tubes enabling delivery into the trough of liquid and sludge coming from the bottom of the basin, and means for evacuation of sludge from the trough, wherein the sleeve of at least one suction tube is free to slide vertically relative to the mobile arm supporting the trough and to the tube and in that the sleeve has a reserve of buoyancy necessary and sufficient for keeping the overspill end of the sleeve in the trough continuously out of the water so that the overspill level of the sleeve adapts automatically relative to the level of the liquid and sludge in the trough.