Overview
Listing ApplicationAgriculture, biosolids, food waste, and other organics all make maintaining consistent sludge heating temperatures challenging. If you are looking for a more efficient, cost-effective solution for heating viscous slurries without the plugging, burn-on or fouling that can occur with a heat exchanger, look to Hydro-Thermal’s multiple anaerobic digestion heater solutions.

Our patented Direct Steam Injection (DSI) heating systems work by mixing steam and process liquids completely while delivering consistent temperature and instantaneous heating. This requires keeping the sludge within an optimal range, typically 35–40°C (95–104°F) for mesophilic digestion or 50–60°C (122–140°F) for thermophilic digestion to aid in the anaerobic digestion process by keeping microorganisms at the required temperature to optimize effectiveness and increase methane gas production to power the boilers, leading to impressive benefits:
- Thousands of dollars in energy savings and lower production costs
- Heating flexibility from startup to shutdown to maintenance mode
- Precise temperatures without fear of scalding
- Reduced maintenance thanks to straight flow-through designs
- Space savings from compact, inline designs