Apparatus and method for clarifier sludge collection

摘要: A sludge removal apparatus for a clarifier/thickener tank includes central rotatable or stationary sealed collection box submerged in the and surrounding vertical, influent column support shaft. The is positioned at any elevation between bottom to position just below liquid/air level tank. At least one rake arm, preferably two pairs of spaced arms each having spiral blade, affixed rotates with driving cage, inwardly push pick-up transport box. substantially controlled flow may be provided into by valved adjustable gate control through sidewall opening