SOLEX - THERMAL SCIENCE

COOLING DRIED BIOSOLIDS

The Solex SIGMA series cooler has been successfully used for cooling dried biosolids since 1992. In fact, units have been supplied worldwide. Essentially, dried biosolid pellets are formed by drying sewage sludge to make an organic fertilizer. The pellets must be cooled before they are conveyed to storage bins to prevent smoldering and combustion.

The Solex cooling technology is ideal for cooling dried biosolids because it cools dried biosolids without the use of direct air—this offers significant benefits to the producer. First, the indirect cooling technology uses up to 90% less energy than technology that requires direct air use. Second, emissions like dust, fines and odors are eliminated because air is not used to directly cool the dried biosolids. As a result, additional dust removal or odor control isn’t necessary. Also, the slow and controlled movement of the dried biosolid pellets through the heat exchanger (gravity is used) prevents product breakage as well as the generation of fines in the final product when it goes to storage. This also diminishes the potential for smoldering.

Finally, the plates are configured to enable easy access for inspection and cleaning. Large access doors provide quick entry and make it possible for single plates to be accessed, repaired or replaced.

To learn more about how Solex technology can be used for cooling dried biosolids, contact a Solex Customer Service Representative now, or click on the link below to learn more about the Solex cooling technology.

Learn more about how Solex technology works for Cooling Dried Biosolids