Y. Lebihan et P. Lessard, INFLUENCE OF OPERATIONAL VARIABLES ON ENZYMATIC TESTS APPLIED TO MONITOR THE MICROBIAL BIOMASS ACTIVITY OF A BIOFILTER, Water science and technology, 37(4-5), 1998, pp. 199-202
Citations number
8
Categorie Soggetti
Water Resources","Environmental Sciences","Engineering, Civil
Enzymatic assays were used to monitor the biomass of a biofilter worki
ng under different operational conditions. In backwash waters used as
biomass source, many hydrolytic enzymes as well as dehydrogenase expre
ssed in volumetric units seem to correlate with volatile suspended sol
ids (VSS) and with the volumetric feeding mass. However, only the spec
ific concentration of beta-Glucuronidase correlates negatively with th
is volumetric feeding mass. The influent temperature affects simultane
ously the specific concentration of beta-Glucosidase, the headless beh
aviour and the total sugars/VSS ratio. For the properties of the bioma
ss, the sludge volume index (SVI) of the backwash waters correlates wi
th Leu-aminopeptidase, suggesting that this enzyme could have been pro
duced by filamentous organisms. (C) 1998 IAWQ. Published by Elsevier S
cience Ltd.