Enzymatic Profiles of Activated Sludge from a Wastewater Treatment Plant with Foaming Incident

  • Mulugeta Kibret Bahir Dar University, Department of Biology, P.O Box 79, Fax: (08) 202025, Tel: 200143 Ext. 217
  • Walter Somitsch Institute for Environmental Biotechnology, Technical University of Graz, Petersgasse 12/I 8010 Graz, Austria
  • Karl-Heinz Robra Institute for Environmental Biotechnology, Technical University of Graz, Petersgasse 12/I 8010 Graz, Austria

Abstract

Activated sludge samples collected from a treatment plant, with foaming experience in the month of July, was characterized enzymatically. Hexokinase, Glyceraldehyde-3-phosphate dehydrogenase and Adenylate kinase activity assays were conducted before, during and after the foaming episode. The spectrum of enzyme activities demonstrated change in the biochemical activity of the activated sludge, with peaks in the foaming month. Significant difference in enzyme activities was found between the foaming and nonfoaming months. The potential use of these enzymes in foam prevention and control is implied. Foaming incident was associated with increase in phosphate and lipid contents in the influent.

Journal of Civil Engineering, JKUAT (2001) Vol 6, 1-12
Published
2004-03-09
Section
Articles

Journal Identifiers


eISSN: 1562-6121