SUSPENSION COLLECTING TECHNIQUE

摘要

PROBLEM TO BE SOLVED: To provide a suspension collecting technique for effectively collecting suspension suspended near a water bottom of a river or a lake or near a sea bottom with almost no suction of water or sea water therearound. SOLUTION: The suspension collecting technique comprises a step of locating a suction unit 7 having a plurality of suction holes 72 formed in the side face and communicating with a suction pipe 6 in a suspension layer 3 right near a water bottom (the bottom of a lake, the bottom of a river, or a sea bottom) 2 and a step of sucking the suspension 3L existing in the suspension layer 3 through the suction holes 72a in the side face of the suction unit 7 and carrying it via an internal of the suction unit 7 into the suction pipe 6.