ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Behaviour of Anaerobic Baffled Reactor Treating Partly Acidified or Easy Acidifying Wastewater

M. Hutňan, M. Drtil, R. Kuffa, and L. Mrafková

Department of Environmental Science, Faculty of Chemical Technology, Slovak University of Technology, SK-812 37 Bratislava

Abstract: Partly acidified wastewater has been treated in an anaerobic baffled reactor (ABR) that belongs to high-rate anaerobic reactors. The running processes as well as the granular biomass cultivation were observed in the present work. The wastewater contained sodium acetate, D-glucose, macro- and micronutrients. Sodium bicarbonate was used for adjusting the pH in the reactor. The response to step increasing of the organic loading rate was observed by measuring the filtered as well as unfiltered COD in the reactor effluent, the concentrations of volatile fatty acids, and the pH in each ABR, compartment. An anaerobic granular biomass was cultivated in the reactor and organic loading rate of 15 kg m^-3 d^-1 was reached. It can be inferred from the results of this work that for acidified wastewater the granulation process in ABR is more sensitive than in other types of high-rate anaerobic reactors, for example, in UASB reactor or in a hybrid reactor.

Full paper in Portable Document Format: 525a699.pdf

Chemical Papers 52 (5) 699–707 (1998)