Effect of ozone and granular activated coal (GAC) on the bioactivity of drinking water.
In this research, the appearance of easily biodegradable organic material in ozonation and granular activated coal (GAC) filtration was studied. The amount of bioactivity was measured by conventional AOC analyses used in two different modes and also using quite a new growth potential (GP) method. GAC filtration without ozone doubled the amount of AOC of the chemically treated surface water, whereas by ozonation with GAC filtration it was possible to halve the amount of the AOC. The measurement of GP was noticeably simpler than measuring AOC, but for wider use more parallel studies are needed for the comparability of the results of the analysis.
Sallanko
Jarmo
J
Water Resources and Environmental Engineering Laboratory, University of Oulu, Finland. jarmo.sallanko@oulu.fi
Iivari
Pekka
P
Heiska
Eeva
E
D003031:Coal; D010126:Ozone / Q000737:chemistry*; D014871:Water Microbiology; D014881:Water Supply
D003031:Coal; D010126:Ozone