Sewage sludge produced in municipal and industrial wastewater treatment plants requires dewatering prior to further treatment or utilisation. Rising costs for sludge disposal make it necessary to concentrate the sludge to a high solids content.
Mechanical sludge dewatering is used to reduce the amount of sludge by separating sludge water. A more or less firm sludge cake is produced.
Prior to its dewatering, fed sludge is first flocculated by addition of polymers (sludge conditioning).
Sludge Conditioning
For the economic operation of a sludge dewatering system, sludge conditioning plays a very important role in addition to selecting the right dewatering unit.
Not only is it important to select the right flocculant and to ensure optimum dosing (concentration, quantity, dosing point), but also to mix the flocculant properly into the sludge to achieve good floc formation, which then leads to an optimum dewatering result.
HUBER offers various machines for sludge dewatering and, based on decades of experience and thousands of installations, can always design the best suitable solution for different throughputs and different sludge qualities.
The overall solution of a modern sludge dewatering system also includes the transport of the dewatered sludge to further sludge treatment or to intermediate storage (container or bunker). Here, too, HUBER has extensive expertise and can provide tailor-made solutions for the transport of sludge.
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