Sludge heating is a process that can be used to heat sludge, sediment, and other organic materials. The conventional process works by dumping the sludge into a tank and then heating it at 350F for 5 hours with or without steam injection. This process might as well be used to sanitize the material. The heat destroys most pathogenic organisms that are present in the sludge. There are two standard sludge heating options: aerobic and anaerobic processes.
Sludge heat exchangers typically need to overcome the following challenges:
• Pretty much all types of wastewater sludge are scorch sensitive. As they are heated beyond 50F, the sludge’s burnt-up parts begin to deposit in the form of cakes on the heat exchanger surface. Thie cake causes thermal resistance leading to inefficiencies in the system.
• Sludge is a heterogeneous mix of solids and liquids, hence could lead up to plugging and fouling in the heat exchanger. Thereby affecting the economy of maintenance.
• The sludge pumping system may get stressed if the sludge does not flow uniformly through the heat exchanger.
Komax sludge heat exchanger systems are the best options for municipal sludge and FOG (fats, oils, grease) fluids. They have been increasingly utilized in aerobic and anaerobic manure digestion processes as part of recirculation loop digesters.
Komax systems offer hi-pass mixing tech that eliminates boundary layers and drastically improves heat transfer. The problem of fouling is a thing of the past as the unique tech keeps walls clean and cake-free. Moreover, Komax’s enhanced heat transfer efficiency can help reduce the heat exchanger size by up to 50% than conventional ‘tube in tube’ exchangers.
In conclusion, the Klean-Wall Heat Exchanger from Komax is an efficient, cost-effective alternative to conventional sludge heat exchangers. The improved sludge heating technology is a low-environmental impact and high-energy efficiency process that reduces carbon dioxide emissions and provides a clean and renewable energy source. When it comes to managing municipal waste, Komax sludge heat exchangers are the first choice that can help harness energy by capturing biogas.