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warman pumps

DSE-4000 Electric-Driven 4-Inch Dredge Sled | High Solids Pumping

    Dredge Sled – Patented Lagoon Dredging Equipment, Electric-Driven 4-Inch

    The DSE-4000 Electric-Driven 4-Inch Dredge Sled is a compact, high-solids dredging system engineered for shallow-water and confined-dredging applications. Powered by an electric submersible EDDY Pump, it delivers flow rates from 250 to 1200 GPM with head capabilities up to 160 feet. The system handles solids up to 3 inches and slurry concentrations up to 70% by volume. Integrated with a floating dredge, VFD control, and remote winch operation, it delivers precise material removal with efficient electrical power.

    Technical Advantages

    High solids pumping capability designed to handle slurry concentrations up to 40–70 percent by volume, allowing efficient material removal with fewer passes and reduced water usage. Non-clog pump design with the ability to pass solids up to 3 inches in diameter, minimizing downtime caused by blockages and reducing maintenance requirements in abrasive environments. Electric-driven submersible pump configuration delivering flow rates from 250 to 1200 GPM with head performance up to 160 feet, suitable for long discharge distances and elevation changes. Integrated floating dredge sled system engineered for stable operation in shallow water, lagoons, ponds, and confined dredging areas where conventional dredges are not practical. VFD-controlled electric motor enabling precise control over pump speed, flow rate, and power consumption to match varying material conditions and optimize efficiency. Remote-operated lifting and traversing winches that allow accurate dredge positioning and depth control while keeping operators safely onshore. Modular system design that supports optional enhancements, including Doppler flow meters, discharge pressure gauges, and high-pressure jetting rings, to improve monitoring and production control.

    Technical Specifications

    Model: DSE-4000

    Flow Range: 250 – 1200 GPM Head Range: Up to 160 ft Discharge Size: 4 inch Suction Size: 6 inch Solids Handling: Up to 3 inches Percent Solids: 40 – 70% Production Rate: 75 – 150 yd³/hr Max Speed: 1800 RPM

    Dredge Platform Dimensions

    Standard Operating Depths: 1.6 – 16 ft (0.5 – 5m) Max Depth Mast Lift: 17.4 ft (5.3m) Width: 12.5 ft (3.8m) Height: 5.6 ft (1.7m) Length: 9.8 ft (3m) Weight (without pump): 3,307 lbs (1500 kg)

    Included Equipment

    4-inch High Chrome EDDY Pump + 75 HP Submersible Electric Motor Floating dredge sled 300 ft traversing cable Winches (remote lifting winch 12V & 110V land winch) Solar panel charging system Gas generator (110V output for land winch)

    Required Equipment to Operate

    4” material handling discharge hose and floats 100 KW electric generator or main line shore power NEMA 3R VFD or Soft Starter

    Optional Equipment

    Wireless Doppler flow meter Discharge line pressure gauge (0–150 psi) High-pressure jetting ring

    PUMP CURVE

    The pump curve for the DSE-4000 Electric-Driven 4-Inch Dredge Sled illustrates how flow rate and head interact to define operating performance across varying conditions. It helps operators select the correct speed and setup to achieve efficient slurry transport, stable solids handling, and optimal power usage for the specific dredging material and discharge distance.

    Comparison Table

    ParameterDSE-4000 Electric-Driven 4-InchDSH 6000 Electric-Driven 6-Inch
    ModelDSE-4000DSH 6000
    Discharge size4 inch6 inch
    Suction size6 inch8 inch
    Minimum flow250 GPM450 GPM
    Maximum flow1200 GPM2500 GPM
    Maximum headUp to 160 ftUp to 200 ft
    Solids handlingSolids up to 3 inchesSolids up to 6 inches
    Solids concentrationUp to 40–70 percent by volumeUp to 40–70 percent by volume
    Production rate75–150 yd³ per hourUp to 150 yd³ per hour
    Maximum speed1800 RPM1800 RPM
    Maximum horsepower125 HP125 HP
    Motor typeSubmersible electric motor with VFD or soft starterSubmersible electric motor with VFD or soft starter
    Typical applicationsLagoons, ponds, shallow dredging, confined areasHigher volume dredging, larger ponds, industrial and mining applications

    Industries Served

    Lagoon dredging

    The 4-inch electrically driven dredge sled is well-suited for lagoon maintenance, where the controlled removal of settled sludge, organic solids, and fine sediments is required. Its compact footprint and high solids-handling capacity enable efficient dredging without disturbing surrounding liners or embankments.

    Mining and mineral recovery

    This system supports small-scale mining and mineral recovery operations by handling abrasive slurries and fine tailings with high solids concentration. Electric drive and precise flow control make it effective for recovery ponds and process water management areas.

    Sand and aggregate

    For sand and aggregate applications, the dredge sled enables consistent removal of settled material from wash ponds and sumps. Its ability to pump dense slurry helps maintain pond capacity and supports uninterrupted material processing.

    Shallow industrial ponds

    The 4-inch dredge sled performs reliably in shallow industrial ponds with limited access. It allows operators to remove accumulated solids while maintaining stable operation in low-depth environments common in industrial facilities.

    Fly ash and coal ash handling

    In power generation and ash management facilities, the dredge sled is used to pump fly ash and coal ash slurry from containment ponds. Its non-clog design supports abrasive material transfer while reducing mechanical wear and downtime.

    Dams and reservoirs

    For dam and reservoir maintenance, the system assists with sediment removal in confined zones where larger dredges are impractical. Controlled electric operation supports precise dredging near structures and intake areas.

    Case Study

    The Problem

    An industrial wastewater treatment facility was experiencing significant sludge accumulation in its primary lagoon, reducing effective holding capacity and degrading treatment efficiency. The lagoon operated at shallow depths and was lined, which limited the use of mechanical dredges or heavy equipment. Manual cleanout methods were slow, disruptive, and required frequent shutdowns, increasing operational costs and regulatory risk.

    The Solution

    The facility deployed a DSE-4000 Electric-Driven 4-Inch Dredge Sled to safely remove settled sludge while operating within the lagoon’s depth and liner constraints. The electric-driven submersible pump provided precise flow control and high-solids pumping, enabling dense sludge to be removed with minimal dilution water. The floating sled and remote winch system enabled accurate positioning and depth control without placing equipment or personnel inside the lagoon.

    The Result

    The lagoon’s working capacity was fully restored, improving overall treatment performance and reducing odor issues. Sludge removal was completed efficiently without liner damage or extended downtime. The facility established a repeatable maintenance dredging process, lowering long-term operating costs and improving compliance with environmental discharge requirements.

    Frequently Asked Questions

    What type of material can the DSE-4000 Electric-Driven 4-Inch Dredge Sled handle?

    The DSE-4000 is designed to pump abrasive slurries, including sludge, slurry, sand mixtures, fly ash, coal ash, biosludge, mine tailings, and mineral-rich sediments. It can handle solids up to 3 inches in diameter and slurry concentrations of 40-70% by volume, making it suitable for demanding dredging and pumping applications.

    What flow rates and head performance can be expected from this dredge sled?

    The system operates within a flow range of approximately 250 to 1200 GPM, with head capability up to 160 feet. Actual performance depends on material density, solids concentration, discharge distance, and system configuration, which can be optimized using the pump curve.

    What power supply is required to operate the DSE-4000?

    The dredge sled uses a submersible electric motor and requires either a generator rated around 100 kW or a suitable shore power connection. A NEMA 3R VFD or soft starter is used to control motor speed and manage power delivery efficiently.

    Is the DSE-4000 suitable for shallow water dredging?

    Yes. The dredge sled is specifically designed for shallow-water and confined environments, such as lagoons, ponds, reservoirs, and industrial basins. Its floating platform and controlled-depth operation enable effective dredging in areas where conventional dredges cannot operate.

    How does the non-clog pump design benefit operations?

    The non-clog design allows large solids and debris to pass through the pump without blockage. This reduces downtime, minimizes maintenance, and improves reliability when handling abrasive or high-viscosity materials commonly encountered in dredging applications.

    What level of solids concentration can the pump handle efficiently?

    The DSE-4000 is engineered to pump slurries with solids concentrations ranging from 40 to 70 percent by volume. This high solids capability reduces the need for excess water, lowers disposal volumes, and improves overall dredging efficiency.

    How is the dredge sled positioned and controlled during operation?

    The system uses remotely operated winches for lifting and traversing that allow operators to control dredge depth and horizontal movement from shore. This improves safety, enables precise dredging control, and eliminates the need for personnel to enter the water.

    Can the system be customized with additional monitoring or performance equipment?

    Yes. Optional equipment includes Doppler flow meters, discharge-line pressure gauges, and high-pressure jetting rings. These additions help operators monitor performance, optimize production, and adapt the system to specific material conditions.

    What industries commonly use the DSE-4000 dredge sled?

    The dredge sled is commonly used in lagoon dredging, wastewater treatment, mining and mineral recovery, sand and aggregate processing, fly ash and coal ash management, shallow industrial ponds, and dam or reservoir maintenance projects.

    How does electric drive compare to hydraulic or diesel-driven dredge systems?

    Electric drive offers precise speed control, consistent performance, and lower on-site emissions. It is well-suited for facilities with available electrical power and offers quieter operation, lower maintenance requirements, and improved energy efficiency compared to diesel-driven systems.

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