Sludge Dryers

Environmental Benefits:

Toward Zero Waste — Our dryers help achieve Zero Liquid Discharge (ZLD) and Zero Waste to Landfill goals by converting wet sludge into a dry, manageable, and often reusable form such as fuel.


Output Uses:

Dry sludge for fuel, compost, or raw material reuse; reduction in waste volume for landfill diversion


Technical Features:

High-temperature lift capability, modular skid-mounted design, integration with existing BMS and SCADA systems


Waste Heat Recovery Heat Pump (WHRHP) units are advanced systems designed to capture low-grade waste heat from industrial or commercial processes and convert it into useful heating or hot water. Ideal for energy-intensive operations, these systems dramatically reduce energy consumption, improve process efficiency, and lower carbon emissions.

Energy-Efficient, Low-Temperature Drying for Waste Sludge Management:

Our Heat Pump Sludge Dryers offer a sustainable and cost-effective solution for reducing the volume and weight of various industrial and municipal sludges. Using low-temperature dehumidification technology, these systems dry sludge to a stable, dry form—while drastically cutting down on energy consumption and operational costs.

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Why Heat Pump Drying?

Traditional thermal drying methods consume large amounts of steam or fuel and often degrade sludge quality. In contrast, our closed-loop heat pump dryers operate at temperatures below 80°C, delivering exceptional benefits such as high energy efficiency (COP 3–4.5), odor-free and emission-free operation, safety for heat-sensitive and organic sludge, suitability for both indoor and outdoor installations, and compatibility with zero liquid discharge (ZLD) and circular waste management systems.

Industrial Process Diagram

Applications:

  • Municipal Sewage Sludge
  • Effluent Treatment Plant (ETP) Sludge
  • Biological & Chemical Sludge
  • Paper Mill & Textile Sludge
  • Food, Pharma & Chemical Industry Sludge
  • Manure, Agro-Waste, and Digestate


How It Works:

  • Sludge Loading: Dewatered sludge (20–30% solids) is fed into the drying chamber.
  • Heat Pump Drying: Warm dehumidified air circulates through the chamber, evaporating moisture from the sludge.
  • Condensation: Moisture-laden air is passed through the evaporator coil, where water vapor is condensed and collected.
  • Air Reheating: Dry, warm air is reheated by the heat pump and recirculated—no energy is wasted.
  • Dry Sludge Discharge: Final sludge (typically 70–90% dry solids) is discharged as a powder, granule, or cake.

Key Features of our customized heat pumps

Energy Efficiency Up to 70% less energy than conventional dryers
Emission-Free No flue gas, odors, or combustion by-products
Space Saving Compact footprint and modular expandability
Recyclable Water Condensate can be reused or treated
Lower Disposal Costs Up to 80% volume reduction