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Sludge quality

Sludge is the main waste stream from the treatment of wastewater. Its characteristics depend on both the original feedwater quality and the type of the unit operation from which the sludge is discharged. For conventional municipal wastewater treatment, the two main sludge streams are from the primary sedimentation stage, producing primary sludge, and the secondary biological treatment stage, producing waste activated sludge (WAS) if the biological treatment is based on the activated sludge process

Sludge quality related videos

Sludge processing: the basics Source: Judd Water & Wastewater Consultants / YouTube

Sludge processing: the basics

An introduction to sludge treatment − a brief overview to sludge processing in the context of wastewater treatment.

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Sludge quality features and blogs

Schematic of intensification of AD by thermal hydrolysis, showing thickening, TH, AD and post-AD DW. Coversion of biogas be CHP engine included.
Blog

Pretty intense: the intensification of sewage sludge processes

Sludge intensification processes increase the sewage sludge solids concentration through thickening/dewatering or the biogas generation by digestion. But at what point do you stop extracting more water from the sludge or enhancing biogas production?

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More process and operation topics…