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DryWa

DRYWA is an innovative, high-performance low-temperature belt dryer for industrial and municipal sludge.

Its advanced closed-loop dehumidification technology, powered by natural CO₂, a non-F-gas refrigerant, maximises energy efficiency while significantly reducing sludge weight, transportation and disposal costs.

DRYWA – Smarter Sludge Drying. Lower Costs. Greater Value.

Reduce sludge disposal costs. Recover water. Rethink sludge management. Italian technology you can rely on.

DRYWA is an innovative, high-performance low-temperature belt dryer for industrial and municipal wastewater sludge, designed to reduce sludge weight and volume, cut transportation and disposal costs and recover water from the drying process.
It effectively treats biological, chemical and mixed sludge, adapting to different wastewater treatment requirements.

Its advanced closed-loop dehumidification technology using natural refrigerant CO₂ (R744) uses a future-ready refrigerant not subject to the F-gas phase-out restrictions.
The combination of low operating temperatures and a closed-loop process, with no direct process-air emissions to the atmosphere, means DRYWA does not normally require specific environmental permits for atmospheric emissions, subject to local regulations.

Smart, compact and designed for plug-and-play installation. DRYWA simplifies integration into existing treatment plants and industrial facilities.
Its modular design allows multiple units to operate simultaneously, providing scalable treatment capacity to meet different sludge volumes and operational needs.

Entirely designed, manufactured and supported in Italy. DRYWA combines Italian engineering with dedicated after-sales service and reliable remote technical support from our own team.

Technical data

DryWa Sludge Dryer Schema

Sludge feed capacity: 110–130 kg of wet sludge per hour

Minimum inlet dry solids content: 18% – shovelable sludge

Sludge feeding system: Crusher or extruder

Weight reduction: 75% ± 5%

Water recovery: 70–85 litres per hour

Installation footprint: Approx. 15 m² per module

Dimensions (L × W × H): 2,500 × 5,700 × 1,600 mm

Electrical power installed: 55 kW

Average absorbed electrical power: 45 kW

Outlet dry solids: typically 70–75% DS

Maintenance: Routine maintenance only

Payback: Easily assessed based on savings in sludge transportation and disposal costs.

EFFICIENCY

Versatile sludge treatment: Suitable for biological, chemical and mixed sludge

Closed-loop operation: No direct process-air emissions to the atmosphere, helping prevent the release of odours, VOCs and ammonia through the process air

Simplified environmental permitting: The closed-loop air circuit and low operating temperatures can reduce the need for specific atmospheric-emission permits, subject to local regulations

Plug-and-play installation: Straightforward installation and rapid start-up

Easy operation: Fully automatic drying process

Modular design: Multiple modules can operate simultaneously to increase treatment capacity

INDUSTRY 4.0

Industry 4.0: Real-time process monitoring, operating data and control

Remote assistance and service: Real-time remote technical support from our Italy-based team

Performance values are indicative and may vary depending on sludge composition, inlet dry solids, physical characteristics, ambient conditions and required final dry solids content.

Advantages

INNOVATIVE SLUDGE DRYING TECHNOLOGY
DRYWA combines low-temperature drying with an advanced closed-loop dehumidification system powered by natural CO₂ (R744), designed to deliver effective and reliable sludge drying

REDUCE YOUR SLUDGE MANAGEMENT COSTS
Reduce sludge weight and volume to lower transportation and disposal costs, while recovering valuable water from the drying process

MINIMAL PLANT MODIFICATIONS
Designed for straightforward integration into existing wastewater treatment plants, DRYWA requires no substantial modifications to the existing plant infrastructure. Its compact design fits within a standard 20-foot shipping container, simplifying transportation and installation while minimising space requirements.

COMPACT, MODULAR DESIGN
A space-saving solution with a modular configuration that allows multiple units to operate simultaneously, adapting treatment capacity to your needs

CONTROLLED, LOW-TEMPERATURE DRYING
The low-temperature process enables effective sludge drying while supporting a more controlled and environmentally responsible approach to sludge management

AUTOMATIC OPERATION
An integrated control system manages the drying process automatically, simplifying day-to-day operation

VERSATILE SLUDGE TREATMENT
Designed to handle biological, chemical and mixed sludge from industrial and municipal wastewater treatment processes

ITALIAN ENGINEERING AND DIRECT SUPPORT
Entirely designed and manufactured in Italy, DRYWA is backed by dedicated after-sales assistance and real-time remote technical support from our own team

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