KWS Manufacturing

Environmental Shaftless Screw Conveyors

Dewatered residuals from environmental processes including water and wastewater treatment are ideal applications for KWS Shaftless Screw Conveyors. Wet and sticky bulk materials such as dewatered biosolids, grit and screenings are efficiently conveyed with a shaftless spiral, eliminating the need for internal bearings or a center pipe. Conveying efficiency is improved where elevation changes are required because the shaftless spiral allows for higher trough loading. The perfect solution to efficiently and reliably convey dewatered residuals are KWS Shaftless Screw Conveyors.

Engineering Guide Industry Solutions
Environmental Shaftless Screw Conveyors - KWS Manufacturing

Advantages of Using Shaftless Screw Conveyors

  • Ideal for handling sticky, stringy and sluggish residuals
  • Improved conveying efficiency when lifting residuals compared to shafted conveyors
  • Allows greater flexibility for plant layout due to configurations available
  • Fully enclosed for vapor and odor tight construction
  • Internal and tail bearings are eliminated
  • One piece drive shafts and unique flanged spirals ensure efficient and reliable transmission of power
  • Wide range of materials of construction allows custom design for each application

KWS Shaftless Screw Conveyors are successfully used throughout many environmental applications associated with water and wastewater treatment.

KWS played a key role in developing CEMA standards for shaftless screw conveyors ensuring economical solutions over the whole life of the equipment. As the industry leader, KWS continues to create new and improved design standards and this work is frequently reflected in the CEMA standards.

Choosing a Screw Conveyor Component Guide
Environmental Shaftless Screw Conveyors - KWS Manufacturing

Available Features / Options

  • High Strength Alloy Spirals Manufactured From a Wide Variety Of Steels Including Micro-Alloy Carbon; Abrasion Resistant and Corrosion Resistant Steels. KWS Offers a 340 BHN Spiral For Grit Applications and Duplex Steel Spirals For Highly Corrosive Environments.
  • Wide Variety Of Liner Materials and Special Features Including; UHMW With Special Features Including Oil Impregnation, Wear-Alert Indicator, Xylethon and Ceramic.
  • Liner Fastening System Allows For Easy and Rapid Removal and Replacement.
  • High Strength Power Transmission Design From Direct, Shaft Mounted Drive To One Piece Drive Shaft To Gusseted Coupling Plate Connection To Spiral.
News & Articles

Environmental Shaftless Screw Conveyor Resources

Problem Solvers for Environmental Shaftless Screw Conveyors

Filter Problem Solvers

Shaftless Screw Conveyor for Miners Ranch Water Treatment Plant in Oroville, CA

Shaftless Screw Conveyor for Miners Ranch Water Treatment Plant in Oroville, CA - KWS Manufacturing

KWS Environmental designed a shaftless screw conveyor with the KWS 350 spiral made for handling the…

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Grit Conveyor System for the Nacogdoches WWTP in Nacogdoches, TX

Grit Conveyor System for the Nacogdoches WWTP in Nacogdoches, TX - KWS Manufacturing

KWS Environmental provided shaftless screw conveyors that were designed for the difficult application and…

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Biosolids Load Out System for Moffat Water Treatment Plant in Lakewood, CO

Biosolids Load Out System for Moffat Water Treatment Plant in Lakewood, CO - KWS Manufacturing

KWS Environmental was selected to design and provide a load out system with multiple conveyors to load…

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Shaftless Screw Conveyor Replaces Belt Conveyor for Biosolids Load Out System at Floyd Branch…

Shaftless Screw Conveyor Replaces Belt Conveyor for Biosolids Load Out System at Floyd Branch WWTP in Richardson, TX - KWS Manufacturing

KWS Environmental designed, manufactured and supplied a shaftless screw conveyor for the load out system…

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Biosolids Conveyor for Upper Moreland-Hatboro JSA Treatment Plant in Upper Moreland Township,…

Biosolids Conveyor for Upper Moreland-Hatboro JSA Treatment Plant in Upper Moreland Township, PA - KWS Manufacturing

KWS Environmental designed, manufactured, supplied and commissioned a shaftless screw conveyor along with…

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Vertical Shaftless Conveyor System for Elevating Biosolids at the Town of Simsbury, CT

Vertical Shaftless Conveyor System for Elevating Biosolids at the Town of Simsbury, CT - KWS Manufacturing

KWS provided a very unique solution for the application. KWS Shaftless Conveyors are uniquely designed to…

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Vertical Shaftless Screw Conveyor with Pivoting Load-Out Conveyor for Biosolids for Deltona…

Vertical Shaftless Screw Conveyor with Pivoting Load-Out Conveyor for Biosolids for Deltona WWTP in Florida - KWS Manufacturing

KWS designed and delivered a shaftless vertical screw conveyor, an automatic pivoting shaftless screw…

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Shafted and Shaftless Screw Conveyors for Handling Residuals at Amherstburg WWTP in Ontario,…

Shafted and Shaftless Screw Conveyors for Handling Residuals at Amherstburg WWTP in Ontario, Canada - KWS Manufacturing

KWS Environmental designed and manufactured both shaftless and shafted screw conveyors for all types of…

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Shafted Screw Conveyors for Conveying Dried Sludge at Jones Island WWTP in Milwaukee, WI

Shafted Screw Conveyors for Conveying Dried Sludge at Jones Island WWTP in Milwaukee, WI - KWS Manufacturing

The KWS Environmental screw conveyors were designed with a number of special features to meet the unique…

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Unique Pivoting Shaftless Screw Conveyor for the East Vincent Municipal Authority WWTP (Spring…

Unique Pivoting Shaftless Screw Conveyor for the East Vincent Municipal Authority WWTP (Spring City, PA) Biosolids Loadout - KWS Manufacturing

KWS provided custom designed shaftless conveyors and slide gate that met the customers need for a…

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Shaftless Screw Conveyors for Loading Biosolids to Dumpsters at Pataskala WRF in Pataskala, OH

Shaftless Screw Conveyors for Loading Biosolids to Dumpsters at Pataskala WRF in Pataskala, OH - KWS Manufacturing

KWS Environmental provided a complete biosolids load out system including shaftless screw conveyors,…

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Shaftless Screw Conveyor System for Conveying Biosolids in Florida Keys

Shaftless Screw Conveyor System for Conveying Biosolids in Florida Keys - KWS Manufacturing

The KWS screw conveyor was supplied as dust-tight with fully enclosed cover and shaft seals to contain…

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Shaftless Vertical Screw Conveyor System for Transferring Class B Biosolids of Pembroke Pines,…

Shaftless Vertical Screw Conveyor System for Transferring Class B Biosolids of Pembroke Pines, FL WWTP - KWS Manufacturing

KWS was excited to be selected by BCR as a partner responsible for the design, manufacture and…

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Sludge Handling System for Dewatered Biosolids and Composting Additives in Ft. McMurray, Canada

Sludge Handling System for Dewatered Biosolids and Composting Additives in Ft. McMurray, Canada - KWS Manufacturing

The City of Fort McMurray completed the construction of a new sewage treatment plant designed to be…

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Reversing Shaftless Screw Conveyor for Biosolids Load Out at Abington Regional WWTP in…

Reversing Shaftless Screw Conveyor for Biosolids Load Out at Abington Regional WWTP in Chinchilla, PA - KWS Manufacturing

KWS designed the shaftless screw conveyor to meet the specific space constraints associated with the…

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Horizontal to Incline Shaftless Screw Conveyor System for Pandora Water Treatment Facility

Horizontal to Incline Shaftless Screw Conveyor System for Pandora Water Treatment Facility - KWS Manufacturing

KWS designed the shaftless screw conveyors for maximum capacity within a minimal footprint.

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Inclined Shaftless Conveyor for Conveying and Elevating Industrial Wastewater Sludge

Inclined Shaftless Conveyor for Conveying and Elevating Industrial Wastewater Sludge - KWS Manufacturing

KWS engineers designed a special 9-inch diameter shaftless screw conveyer about 27-feet long on a 15…

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Inclined Shaftless Screw Conveyor for Transferring Biosolids at Devens WWTF in Devens, MA

Inclined Shaftless Screw Conveyor for Transferring Biosolids at Devens WWTF in Devens, MA - KWS Manufacturing

KWS Environmental designed the shaftless screw conveyor to meet the specific space constraints associated…

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Inclined Sludge Load Out System for Louisville Wastewater Treatment Plant in Louisville, CO

Inclined Sludge Load Out System for Louisville Wastewater Treatment Plant in Louisville, CO - KWS Manufacturing

KWS Environmental provided a complete biosolids load out system including a 31-feet long inclined…

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Load Out System for Wastewater Grit and Screenings at Waterloo, ON WWTP

Load Out System for Wastewater Grit and Screenings at Waterloo, ON WWTP - KWS Manufacturing

KWS provided contour type gates which require less headroom and provide better sealing of residuals with…

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Shaftless Screw Conveyor Used to Convey Dewatered Grit for Lower Perkiomen Valley Regional…

Shaftless Screw Conveyor Used to Convey Dewatered Grit for Lower Perkiomen Valley Regional Sewer Authority (Oaks, PA) - KWS Manufacturing

Shaftless screw conveyor used to convey dewatered grit at a municipal wastewater facility.

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Shaftless Screw Conveyor System to Elevate Dewatered Biosolids at Montoursville, PA WWTP…

Shaftless Screw Conveyor System to Elevate Dewatered Biosolids at Montoursville, PA WWTP (Includes Animation!) - KWS Manufacturing

Shaftless screw conveyor system to elevate dewatered biosolids from a Belt Filter Press to two loading…

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Biosolids Dumpster Loading System for Upgrade to Lafayette, CO WWTP

Biosolids Dumpster Loading System for Upgrade to Lafayette, CO WWTP - KWS Manufacturing

KWS designed and manufactured a complete biosolids distribution system from the discharge of the…

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Biosolids Load-Out Facility for Kitchener, Ontario, Canada

Biosolids Load-Out Facility for Kitchener, Ontario, Canada - KWS Manufacturing

KWS provided fully redundant systems from the centrifuges to the truck loading bays with two distribution…

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Biosolids Load Out System for Elmira Wastewater Treatment Plant in Ontario, Canada

Biosolids Load Out System for Elmira Wastewater Treatment Plant in Ontario, Canada - KWS Manufacturing

The KWS diverter gate separates low solids material from the product stream and diverts it back to the…

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Biosolids Load Out System for Dillwyn Water Treatment Plant in Buckingham County, VA

Biosolids Load Out System for Dillwyn Water Treatment Plant in Buckingham County, VA - KWS Manufacturing

KWS Environmental provided a complete biosolids load out system including shaftless screw conveyor,…

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Biosolids Load Out System for Doe Branch WRP in Little Elm, Texas

Biosolids Load Out System for Doe Branch WRP in Little Elm, Texas - KWS Manufacturing

KWS Environmental provided an electrically operated drain valve on the lower end of the inclined…

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Biosolids Load Out System Utilizing Flex-Wall Belt Conveyor and Screw Conveyors for Bloomsburg…

Biosolids Load Out System Utilizing Flex-Wall Belt Conveyor and Screw Conveyors for Bloomsburg WWTP in Bloomsburg, PA - KWS Manufacturing

Engineers at KWS Environmental worked closely Gannett Fleming to design every element of the load out…

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Biosolids Load Out System Utilizes Vertical Screw Conveyor at Kulpmont WWTP in Northumberland…

Biosolids Load Out System Utilizes Vertical Screw Conveyor at Kulpmont WWTP in Northumberland County, PA - KWS Manufacturing

KWS brought design expertise and a proven track record with shaftless vertical screw conveyors to the…

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Biosolids Storage and Load Out for Galt Waste Water Treatment Plant in the Region of Waterloo,…

Biosolids Storage and Load Out for Galt Waste Water Treatment Plant in the Region of Waterloo, Canada - KWS Manufacturing

The KWS Environmental load out system was designed for simplicity and rapid load out of trucks.

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