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Processing of sewage sludge with energy recovery in a wastewater treatment plant

Sadecka Z., Weiss E., Myszograj S.

Environment Protection Engineering

2012

Vol. 38, nr 3

97--105

Sewage sludge management in wastewater treatment plants is an important and very current issue. The paper presents an example of a well-resolved technological process of re-use and management of sewage sludge according to operating data from the Gubin-Guben wastewater treatment plant. The sewage sludge is subjected to methane fermentation process with biogas recovery. Electricity obtained from the biogas at 55%, and the produced heat in 100% covers the treatment plant energy demand. Physicochemical and bacteriological parameters of stabilized sludges indicate the possibility of their use in natural and agricultural area.