Patent ID: 8225943

Claim:
A circular clarifier cleaning system in combination with a clarifier for the cleaning and prevention of the development of algae on the surfaces of the clarifier in a wastewater treatment facility, comprising: a circular clarifier having an effluent trough, a baffle wall, a weir wall, an outer trough wall, and inner trough wall, a spillway and scum skimmer arm; an elongate mainframe member attached to and radially extending from the scum skimmer arm; a first positioning member attached at one end to the elongate mainframe member, the first positioning member being pivotally biased towards contact with a first circular wall of the clarifier, a first extension member attached at the other end of the first positioning member and extending downwardly therefrom; a first wheel having its axis of rotation vertically aligned, the first wheel being attached to the first extension member; a first plurality of chains attached to and vertically suspended from the first wheel, wherein upon rotational motion of the scum skimmer arm, the first plurality of chains and the first wheel are caused to rotate, thereby imparting rotational contact of the first plurality of chains against the baffle wall to dislodge debris and algae growth from the baffle wall; a second positioning member pivotally attached to the elongate mainframe member; an L-shaped wheel support bracket rigidly attached to the second positioning member, the L-shaped wheel support bracket having a leg in parallel alignment with the weir wall of the clarifier, the second positioning member being tensioned so that the L-shaped support member leg in parallel alignment with the weir wall is biased towards contact with the weir wall; a second wheel having its axis of rotation vertically aligned, the second wheel being attached to the L-shaped wheel support bracket; a second plurality of chains attached to and vertically suspended from the second wheel, wherein upon rotational motion of the scum skimmer arm, the second plurality of chains and the second wheel are caused to rotate, thereby imparting rotational contact of the second plurality of chains against the weir wall to dislodge debris and algae growth from the weir wall; a first curtain of chains suspended from the mainframe, the first curtain of chains having radially extending columns, the first chain curtain being positioned to drag along a bottom of the effluent trough of the clarifier upon rotational motion of the scum skimmer arm; a second curtain of chains suspended from the mainframe, the second curtain of chains having radially extending columns, the second chain curtain being positioned to drag along a top of the spillway wall upon rotational motion of the scum skimmer arm; and a plurality of inner trough wall chains pivotally suspended from a top horizontal end of the second curtain of chains, the inner trough wall chains being positioned to drag along said inner trough wall upon rotational motion of the scum skimmer arm.