PROBLEM TO BE SOLVED: To provide a sludge sucking port unit of suction equipment, by which precipitates under the water and waste sludge on the land can be recovered and removed efficiently by sucking work without dirtying the surrounding water and which is easy to handle. SOLUTION: A water duct of which bottom side is opened and which has a concave cross-section is connected to the end of a sludge sucking hose of the suction equipment. The sludge sucking port whose position and size are selected is formed on the lower rim of the side wall of the water duct. An outside water sucking port extended upward is formed on the upper rim of the water duct. The shape of this sludge sucking port unit can be changed according to applied conditions. COPYRIGHT: (C)2004,JPO
