Sewage Sludge

Development of a process to influence nutrient content in the further treatment of stabilised sewage sludge

Using an aerobic-anoxic secondary treatment process, it has been possible to reduce the proportion of nitrogen in sewage sludge and in process water from waste water treatment by 60% and 85% respectively. At the same time, it has been possible to reduce the dry weight of sewage sludge by up to 50%. 

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Source: German National Library of Science and Technology Hannover (TIB)