Pressing Onward: A Dewatering Blog

Does Your Dewatering System Need A Sludge Dryer?

By Michael Stock


Are you looking for another way to help make your dewatering process more efficient and cost-effective? If so consider adding a sludge dryer (like our J-Mate® Continuous Dryer, a JWI™ product). Drying the sludge and filter cakes produced by your filter press decreases the volume of waste materials, making it easier to store, transport and dispose of them.


Where does a sludge dryer fit in the dewatering process?

Sludge dryers pick up where the filter press, belt press and centrifuge leave off. They are used in the second stage of the dewatering process, where the goal is to reduce the volume and weight of filter press waste materials. Sludge dryers are designed to be used in high volume, high throughput applications.



How does it work?

An indirect heat source, such as electricity, gas or steam is used to heat a stainless steel surface that is holding the sludge. As the sludge is heated, any excess water that it is holding will evaporate. The moist air inside the dryer is drawn out of the unit and the dried sludge is deposited into dumpsters.

The sludge drying process typically takes 4-6 hours, reduces sludge volume 4:1 and achieves water removal rates of 45 lbs. to 190 lbs (20 KG to 86 KG) per hour in high volume applications.

Once the water has been removed from the sludge, it is turned into a dry, granular material. The dry material (pictured below) can be used for a variety of applications, like fertilizer or fuel depending on what the dried material is made up of.



Not a one size fits all piece of equipment...

Like our filter presses, our sludge dryers are not a one size fits all piece of equipment, they can be customized to meet your specific dewatering needs. Customize your sludge dryer by:

  • Adding dumpsters to hold dried sludge
  • Selecting different stainless steel hopper designs and sizes
  • Utilizing custom support structures
  • Selecting a single or dual diverter discharge chute

Adding a sludge dryer to your dewatering system is just one way to improve its efficiency. Another is to make sure that your maintenance team has spare parts from the Original Equipment Manufacturer (OEM) on hand to avoid machine downtime and maintenance headaches.

Check out our dewatering OEM parts page to purchase some of the parts our experts recommend keeping on hand at all times.


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