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

The Application of Anaerobic Filter for Municipal Wastewater Treatment

I. Bodík, B. Herdová, and K. Kratochvíl

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

E-mail: bodik@chtf.stuba.sk

Abstract: This paper presents results of the lab-scale anaerobic filter and pilot-scale units of anaerobic baffled filter used for municipal wastewater treatment by low temperature. The lab-scale reactor had a volume of 1.7 dm³, being operated at hydraulic retention time (HRT) of 12 h and 24 h. The wastewater temperature was adjusted at 23°C, 15° C, and 9°C, respectively. After almost one year of continuous monitoring, the lab-scale upflow anaerobic filter system produced very good results in terms of COD and BOD₅ removal, and also very low solids concentration in the final effluent. The average results of COD and BOD₅ removal varied from 41 to 95 % in dependence on temperature and values of hydraulic retention time.The pilot-scale experiments were realized in anaerobic baffled filter with total volume of 2 m3 This reactor was installed on wastewater treatment plant ((WWTP) Bratislava-Petrzalka and was fed with raw wastewater under HRT of 24 h. The start-up and operation of anaerobic filter was executed under winter climate condition (September 1998-March 1999). The observed COD and BOD₅ removal efficiency was in average 66 % and 68 %, respectively. Very high efficiency was achieved for suspended solids removal - 95 %.

Full paper in Portable Document Format: 543a159.pdf

Chemical Papers 54 (3) 159–164 (2000)