Leistungssteigerung auf Groβklaeranlagen durch intermittierende Betriebsweise Optimierung der N- und P-Elimination durch verfahrens- und regelungstechnische Strategien

摘要

At the Wurzburg wastewater treatment plant (360.000 p.e.) total nitrogen run-off was reduced by 31% through operational changes. Sections of the aeration stage with upstream denitrification were changed over to intermittent operation. Oxygen supply and aeration times are controlled by a fuzzy logics controller. Optimised operation of the anaerobic tanks leads to an increase in biological phosphorus removal and also to a reduction in flocculants consumption by approx. 9%.