Method of and apparatus for dredging sludge in high density

Details Method of and apparatus for dredging sludge in high density Method of and apparatus for dredging sludge in high density

1988-05-24

1990-02-27

Taylor, Dennis L.

Excavating

Peat excavators

37 66, 37 56, 37 73, 406 71, 406135, E02F 392

Patent

active

049034197

ABSTRACT:
A method of and apparatus for continuously dredging sludge deposited on an underwater bed, at a high density of the sludge, according to which digging and scooping devices are placed in an airtight hood opened at its bottom, which is applied on the intended underwater bed and into which air is then introduced to obtain a condition in which water is removed out of the hood, and the digging and scooping devices are then put into operation, whereby dredging is effected at a high efficiency in that the content of water in sludge being dredged is suppressed to a minimum, the sludge being transferred under pressure in a state of containing substantially no additional water than it naturally contains.

REFERENCES:
patent: 2346180 (1944-04-01), Neumann
patent: 3842521 (1974-10-01), Faldi
patent: 3896566 (1975-07-01), Van Der Gaag
patent: 4253255 (1981-03-01), Durell

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