Abstract: The invention relates to a method for wastewater treatment utilizing an anaerobic treatment of primary sludge (PS) in a septic tank (5), and a separate treatment of excess sludge (ÜS). The excess sludge (ÜS) is separated from the primary sludge (PS) before the anaerobic treatment, solubilized in a hydrolysis treatment and liquefied, and subjected to a separate anaerobic treatment independently of the primary sludge (PS).
Type:
Grant
Filed:
March 6, 2009
Date of Patent:
February 4, 2014
Assignee:
P.C.S. Pollution Control Services GmbH
Inventors:
Wolfgang Ewert, Michael Sievers, Hinnerk Bormann