Low-Temperature Sludge Drying Waste Heat Recovery Applications: Heat Pump Recuperation Solutions for Municipal, Chemical, and Electroplating Sludge

The Energy Pain Point of Sludge Drying

Municipal, chemical, and electroplating sludge often has a moisture content as high as 80%, making direct disposal costly. Low-temperature drying (40–80°C) combined with a heat pump + air-to-air plate recuperator in a closed-loop dehumidification cycle recovers dehumidification waste heat for reheating, greatly reducing the energy per unit of moisture removed, making it one of the most economical technological routes for sludge reduction.

I. Municipal and Chemical Sludge

• Low-temperature sludge drying waste heat recovery units, heat pump drying air-to-air heat recovery units;
• Chemical and electroplating sludge drying exhaust waste heat recovery, sludge drying air-to-air heat recovery units;
• Sludge drying equipment recuperators, internal-circulation sealed dehumidification systems for chemical and municipal sludge drying treatment.

II. Electroplating and Corrosive Sludge

• Heat recovery units for electroplating sludge low-temperature drying machines;
• Epoxy resin corrosion-resistant plate air-to-air heat exchange cores for sludge drying, improving drying efficiency through waste heat recovery;
• Industrial sludge drying epoxy aluminum foil heat exchangers, high-temp and corrosion-resistant energy recovery for environmental purification.

III. Organic Fertilizer and Compost Fermentation

• Heat exchange cores for waste heat recovery in sludge/wastewater compost maturation and fermentation of organic fertilizer;
• Energy-saving schemes for drying machinery, plate heat exchangers for hot-air circulation in manure drying and fertilizer production.

Selection and Material

Need calculations for your sludge drying energy-saving scheme? Use our online selection calculator, or contact us for a free scheme design.