Indirect closed-loop drying at 50–70°C using heat pump technology — produces Class A biosolids with no exhaust emissions and no steam requirement.
Up to 60% savings vs conventional dryers — heat pump recycles energy continuously.
All-electric heat pump operation eliminates boiler, fuel, and steam infrastructure costs.
Closed-loop air handling prevents odor escape — ideal for urban and sensitive locations.
No risk of sludge burning or fire hazards — safe for pharma and food-processing sludge.
Fraction of original sludge to dispose — transforms the disposal economics.
90% less volume = 90% fewer disposal trips and haulage costs.
Dried pellets can be used as soil amendment or fuel — turning waste into resource.
Consistent output quality regardless of ambient temperature or humidity.
| Parameter | Heat Pump Dryer | Paddle Dryer | Drum Dryer |
|---|---|---|---|
| Energy Source | Electricity (Efficient) | Steam / Thermic Fluid | Steam |
| Operating Cost (OPEX) | Low | High | Very High |
| Drying Temperature | Low — Safe (50–70°C) | High | Very High |
| Odor Emission | Minimal | High | High |
| Fire Risk | None | Possible | High |
| Automation Level | High | Medium | Medium |
| Footprint | Compact | Medium | Large |
| Maintenance | Low | High | High |
| Product Quality | Uniform | Variable | Variable |
| Environmental Impact | Eco-Friendly | High Emissions | High Emissions |
Ideal for organisations focused on:
"A future-ready sludge drying solution delivering maximum efficiency, minimum cost, and zero environmental compromise." — Wizwater Technologies