BIOLOGICAL PHOSPHORUS REMOVAL WITH DIFFERENT ORGANIC SUBSTRATES IN ANANAEROBIC AEROBIC SEQUENCING BATCH REACTOR/

Experimental work was carried out with a lab-scale SBR whose operation was divided into three runs: I run (glucose+acetate feed, 3' fill), I I run (only glucose feed, 3' fill), m run (only glucose feed, 60' fill ). The results show that the bacteria growing in alternating anaerobic /aerobic systems can remove organic substrates under anaerobic conditi ons even without using the hydrolysis of polyphosphates or the transfo rmation of glycogen into poly-hydroxyalkanoates as the energy sources for the uptake and storage of substrate. However, in the case of aceta te plus glucose feed EBPR can be steadily established with typical PP- bacteria like metabolism even if most of the COD removal takes place u nder not truly anaerobic conditions. Copyright (C) 1996 IAWQ.