Isotex Engineering Srl
About
Isotex Engineering Srl, based in Trissino (Vicenza), Italy, is part of the Santex Rimar Group and manufactures the DryWa low-temperature belt sludge dryer — the only such dryer on the market equipped with a CO2 heat pump. The DryWa system processes wet sludge at approximately 25% dry matter input, achieving up to 95% weight reduction within a compact 20-foot naval container footprint measuring 5.7 x 2.26 x 1.1 m (15 m2 surface area). The closed air circuit eliminates all atmospheric emissions — no odors, VOCs, or ammonia — and requires no environmental authorizations or filter replacements. At 55 kWh of installed electrical power, the DryWa operates at low temperatures (50-70C), delivering 20% higher energy efficiency than competing belt dryers through combined heat recovery and optimized fluid dynamics. The system features a self-cleaning mechanism with an innovative turning roller that breaks and inverts the drying sludge crust for faster evaporation, enabling continuous unmanned 24/7 operation. DryWa modules can be stacked vertically to scale capacity without increasing floor space. Industry 4.0 connectivity provides real-time monitoring, predictive maintenance, and remote management via PC, tablet, or smartphone. Applications span municipal sewage sludge and industrial ETP sludge from dyeing, paper, textile, pharmaceutical, and chemical sectors. The stand-alone thermal system requires no external heat sources, making it a turnkey plug-and-play solution for sludge volume reduction.
Key Products
A compact, modular belt dryer using a CO₂ heat pump to reduce sludge weight by up to 80-95% with zero air emissions, 20% higher efficiency than competitors, self-cleaning operation, and Industry 4.0 remote monitoring in a 15 m² container footprint.
Vertical stacking configuration for the DryWa dryer modules to scale drying capacity within a compact footprint, enabling higher throughput without increasing floor space.
Real-time monitoring, predictive maintenance, and remote management system for the DryWa dryer, accessible via PC, tablet, or smartphone with continuous performance data transmission to Isotex offices.
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