Dewatered Biosolids Load Out System for South Granville Water & Sewer Authority Facility in Butner, NC

General Description

South Granville Water and Sewer Authority (SGWASA) is a public community water and sewer system that provides water for 19,216 residents living the in the area of Butner, North Carolina. Established in 2004, the South Granville Water and Sewer Authority’s water system obtains its supply from R.D. Holt Reservoir, which is part of the upper Neuse River basin.

On October 29, 2019, SGWASA opened bidding for the WTP Reduction Improvements and Dewatering Facility project. Improvements consisted of construction of new chemical feed facility, upgrades to instrumentation, and construction of a complete system to convey dewatered biosolids from a belt filter press to a load out area. KWS provided all conveying equipment for the plant upgrade.

Design Parameters

1. Product Type: Dewatered Biosolids
2. Material Density: 50 Lbs. per Cubic Foot
3. Capacity: 184 Cubic Feet per Hour
4. Duty: Intermittent

KWS Advantages

KWS worked closely with State Utility Contractors to ensure the interface between the belt filter press, conveyors, and support structure was designed properly. KWS utilized the latest 3D CAD modeling techniques to model the complete system and determine all support locations. As a result, the installation phase went very smoothly. A certified KWS engineer performed equipment startup and operator training before the system was put into successful service.

KWS Special Features

KWS selected a shaftless screw conveyor system to convey and elevate sticky and wet biosolids. KWS shaftless spirals are the strongest and toughest in the industry and guaranteed for many years of uninterrupted operation. The conveyors are completely enclosed to prevent biosolids and odor leakage. KWS also provided various chutes both rigid and flexible, to keep biosolids contained during the conveying and load out process.

KWS shaftless conveyors are equipped with heavy UHMW liners to handle wear and abrasion. All exterior components of the conveyors and structural supports were manufactured from 304 stainless steel to prevent corrosion.

Every KWS shaftless screw conveyor comes standard with our exclusive one-piece flanged drive shaft. The drive shaft is machined from solid bar stock and is guaranteed for life. To protect the equipment and operators, each shaftless screw conveyor was fitted with an emergency pull cord safety stop system, speed sensor, cover interlock safety switch and fixed covers secured with safety bolts requiring a special tool to remove.