Abstract: A wastewater treatment washer compactor system having in-channel motorized screen for installation in an influent channel and removal of screenings from the influent stream; at least one washer and at least one compactor for washing and dewatering the screenings; and system control means for coordinating and controlling the motor speed of the motorized screen, the washing cycle time and processing rate of the washer(s), and the compacting rate of the compactor(s).

Abstract: An improved sanitary conveyor mechanism wherein the improvement is in the conveyor frame, including an elongated conveyor support and a plurality of frame members, each including an aperture formed therethrough for receiving the elongated conveyor support so that a sanitary conveyor of various configurations may be assembled and, and perhaps most importantly, easily cleaned.

Abstract: A gravity flow sludge load-out metering gate comprising a frame having longitudinal and horizontal frame rails and a transverse rail member which defines a gate front portion and a smaller gate rear portion. A sludge inlet funnel is positioned above the front portion for insertion into the interior of a hopper discharge outlet. In the preferred embodiment, the sludge inlet funnel is substantially square and has four triangular, tapering interior sides, which, when viewed from above define an asymmetrical four-pointed star, the interior configuration of which further defines an asymmetrical diamond-shaped sludge discharge orifice. Interior to the metering gate frame is a metering gate blade, slidingly positioned between a plurality of support rollers and a bulb seal, the gate operatively connected to electric, hydraulic, or pneumatic power.

Abstract: A gravity flow sludge load-out system for rapid and accurate loading-out of large volumes of treated biosolids from a wastewater dewatering plant, said system includes a plurality of hoppers 12, 14 supported by a main structure 16 having a plurality of vertical support members 20, each resting on a load cell 28, a sludge inlet at the tip of each hopper, and hydraulically controlled metering gates 40 at the bottom. A PLC 70 controls delivery of sludge from a dewatering facility, including e.g. a dewatering centrifuge 56, into the hoppers and then controls load-out of the sludge to a container truck by providing real-time monitoring of net sludge load-out and tight control of metering gates.