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Founded in 1972, KWS Manufacturing Company, Ltd. is the leader in the design and manufacture of conveying equipment for the bulk material handling industry. We are dedicated to providing the highest quality equipment and service to our customers. KWS products are marketed globally to many diverse industries and to a large customer base. The KWS Environmental division is a major U.S. based manufacturer of wastewater process equipment. We are unique in the scope of our capabilities to meet the needs of customers in this demanding industry. Using our unsurpassed experience and expertise, we work closely with the operators and engineers to optimize the functionality and reliability of our equipment. We have hundreds of successful installations across the U.S. and Canada. KWS Environmental, as a full service supplier, provides engineered solutions, quality manufacturing, commissioning assistance and full maintenance/parts support after the sale… on time and with sensitivity to budget.

Our corporate office and manufacturing facilities are located in Burleson, Texas (convenient to the Dallas/Fort Worth Metroplex). Our manufacturing facility continues to expand and is currently 125,000 square feet. KWS is an ISO 9001-2008 certified manufacturer. We are committed to customer satisfaction and continuous improvement of our products and services.

Products 

  • Shafted Screw Conveyors

    Shafted screw conveyors are one of the most versatile bulk material handling technologies available. Used in thousands of industrial and municipal applications, the shafted screw conveyor is the most widely used type of conveyor for bulk material handling. Shafted screw conveyors are used in the environmental industry for conveying bulk materials such as dewatered biosolids, screenings and grit. With a variety of configurations and options available, a shafted screw conveyor can easily be engineered to meet your specific bulk material handling application.


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    Shafted Screw Conveyors
  • 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.


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    Shaftless Screw Conveyors
  • Belt Conveyors

    Belt conveyors are one of the most widely used bulk material handling conveyors in the world. Their economic design makes them ideal for conveying short and long distances. In today’s modern water and wastewater treatment plant a belt conveyor can be used in a variety of applications including conveying grit, screenings and dewatered or dried biosolids. Both troughing idler and flex wall belt conveyors are used in these applications. Utilizing standard CEMA components a belt conveyor can be custom configured to meet the demanding needs of today’s complex treatment plants.


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    Belt Conveyors
  • Diverter Gates

    KWS Diverter Gates are custom designed to provide a compact and effective means to separate low-solids biosolids during operation of a centrifuge. Typically, low-solids biosolids are characterized by the centrifuge manufacturer as those that result in a main drive torque of less than a defined value. This torque threshold output is used to open and close the diverter gate and allow low-solids biosolids to bypass the downstream process and return to the centrate tank, or as required by the process design. KWS Diverter Gates can be provided with electric or pneumatic actuators to accommodate required opening and closing times, depending upon process requirements.


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    Diverter Gates
  • Thermal Screw Processors

    During the processing of many bulk materials, there is a requirement to cool, heat, or maintain a specific product temperature while conveying the product. The desired temperature fluctuations must be calculated and engineered into the system to accomplish the preferred objectives. KWS Heat Transfer Screw Processors are the perfect solution for these applications. Our Heat Transfer Screw Processors indirectly transfer heat to or from the product by introducing a heat transfer medium such as cool water, hot oil or steam through a special trough jacket and/or the pipe and hollow flights of the screw processor. Achieving the specified exit temperature of the product is accomplished by calculating the surface area of the screw processor and designing the system flow to match the heat load requirements of the application.


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    Thermal Screw Processors
  • Load Out Systems

    As biosolids use and disposal alternatives evolve and grow in economic benefit, Storage and Loading Systems are increasingly a key process in the Sludge Treatment phase of a plant. Highly automated, enclosed Storage and Loading Systems are very efficient in terms of operations staffing and haulage equipment utilization. Direct contact between operations personnel and potentially unsafe bulk materials is reduced or eliminated. Totally enclosed Storage and Loading Systems improve plant air quality and reduce odor emissions. Process flexibility to Sludge Treatment and disposal is created with innovative control systems which positively impact capacity requirements for costly processing equipment. KWS Environmental has developed a line of Storage and Loading solutions for any plant size and budget and can work with customers to develop an economical solution for specific operating circumstances (e.g. haulage costs, hauler equipment type and load capacity, desired load times, goals for e...
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    Load Out Systems
  • Grit Classifiers

    Untreated wastewater contains inorganic solids such as sand, ash and gravel which is collectively known as grit. The amount of grit in wastewater depends on if the source is from sanitary or other origins. Grit is extremely abrasive, forms plugs and damages pumps and sedimentation tanks if not removed.
    KWS Grit Classifiers consist of a large reservoir hopper with an inclined screw feeder. Wastewater enters the reservoir hopper through a pipe connection. Grit falls out of suspension by gravity and settles to the bottom of the reservoir hopper. The screw feeder rotates very slowly, removes the grit and delivers it to a container or conveyor for disposal. The water discharges over a weir and reenters the wastewater treatment process. In today’s modern water and wastewater treatment plant, grit classifiers are primarily used in the preliminary stages of the wastewater treatment process so downstream equipment is not damaged.
     


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    Grit Classifiers
  • Control Panels

    Controls and instrumentation are critical to the efficient and safe use of material handling equipment. Automation allows efficient integration of equipment into complex water and wastewater treatment processes and facilities. Critical process variables are monitored in real time and used to control conveyors and loading facilities. Instruments is used to protect personnel and equipment. Control stations allow for manual operation of equipment for maintenance process overrides. Plant wide control systems allow remote control of equipment in coordination with related processes and while maintaining protection of equipment and personnel.


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    Control Panels
  • Slide Gates

    KWS Slide gates are used in a variety of applications in today’s modern water and waste water treatment facilities for controlling the discharge of dewatered biosolids, grit and screenings. KWS Slide Gates consist of a rigid frame with a slide plate located inside the frame that either opens or closes against the flow of material. The slide plate glides along stainless steel rollers with frictionless bronze bearings. A one-piece neoprene seal prevents unwanted leakage from the gate. The slide plate can be moved by manual, pneumatic, electric or hydraulic means. KWS Slide Gates are a great complement to our material handling and processing equipment.


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    Slide Gates
  • Diverter Valves

    KWS Diverter Valves consist of a rigid valve body with one inlet flange and two outlet flanges. An actuating blade diverts bulk materials to one discharge or the other. The actuating blade is moved either manually or with an electric, hydraulic, or pneumatic actuator. The shaft is supported by two bearings with seals to prevent leakage. KWS Diverter Valves are an efficient method for changing bulk material flow to increase the number of discharge points and increase the flexibility of a process. KWS Diverter Valves allow for greater flexibility in process design and plant layout. With only two moving parts, KWS Diverter Valves are very cost effective and can easily replace conveyors in a process. For example, a single screw conveyor with a diverter valve can discharge bulk materials to one of two downstream processes, eliminating the need for additional downstream conveyors.


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    Diverter Valves