Topic
Sludge treatment − conductive sludge dryers
Conductive drying indirectly heats sludge by bringing the sludge particles into contact with an externally-heated surface
Sludge drying
Sludge drying properties
Sludges of different origins and characteristics exhibit different behaviours when drying. These are most readily observed by correlating the mass water flux – the mass of water evaporated per unit surface area of solids per unit time (kg m-2 s-1) – against the moisture content of the sludge. This correlation normally reveals the three different drying phases:
- the adaptation/preliminary phase
- the constant drying rate phase, and
- the falling drying rate phase.
More on sludge drying
Topic
Introduction to sludge drying
Processes where moisture is removed from sludge as water vapour are known as 'sludge drying'
Sponsored
Get listed in our free directories
Register now to get listed in our free directories
Topic
Sludge treatment − sludge drying operation
Sludge drying processes operate at solids temperatures of 60-93 °C to encourage water to evaporate and leave a solid residue
Sponsored
Advertise on SP.com
Sludgeprocessing.com offers a range of advertising options − contact us for a tailored quote
Topic
Sludge treatment − sludge dryer configurations
Sludge drying processes are generally configured as convective, conductive, or as solar dryers
Topic
Sludge treatment − solar dryers
Solar dryers make use of renewable solar energy to dry sludge and need a larger footprint to allow for increased drying times
Latest features and blogs
Blog
How much is sludge worth?
The UK regulator OFWAT has introduced legislation based on the notion of sludge as a resource. Its value is often expressed in terms of calorific content, and the phosphate is also potentially recoverable. But how exactly should sludge value be quantified?
Read article
How does a flash dryer work?
Animation of the Drymeister (DMR-H) flash drying system − a flash drying system from Hosokawa Micron
From our sponsors…
Explore more sludge processing content
Topic Home
Sludge basics
An overview of sludge basics − an introduction to sludge and sludge theory
Topic Home
Sludge conditioning
An overview of sludge conditioning − chemical and thermal
Topic Home
Sludge thickening
An overview of sludge thickening − an introduction to theory and related technologies
Topic Home
Sludge dewatering
An overview of sludge dewatering − an introduction to sludge dewatering theory and technologies