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Electro-Dewatering Waste Activated Sludge: Lessons Learned from Real World Cases

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Abstract:

Dewatering performances of waste activated sludge from biological wastewater treatment processes are limited by physical-chemical laws that limit solids concentrations to the low end. In order to increase the overall solids concentration and reduce volumes for disposal, electro-osmosis has been considered has an alternative mean for wastewater sludge dewatering. It is only recently, though, that a limited number of industrial electro-osmosis applications have successfully been introduced for dewatering sludge. This paper reviews electro-dewatering results of real world cases, elaborates on operational challenges faced and concludes on lessons learned from the introduction of this revolutionary technology in the wastewater treatment industry.

Document Type: Research Article

DOI: https://doi.org/10.2175/193864708788806467

Publication date: 2008-01-01

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