Rate and extent NOM removal during oxidation and biofiltration.
The presence of natural organic matter (NOM) in drinking water treatment presents many challenges. Integrated treatment processes combining oxidation and biofiltration have been demonstrated to be very effective at reducing NOM, specifically biodegradable organics. Laboratory bench-scale experiments were carried out to investigate the effect of oxidation by ozonation or UV/H2O2 on NOM. Specifically the rate of biodegradation was studied by performing bench-scale biodegradation experiments using acclimatized biological activated carbon (BAC). For the source water investigated, oxidation did not preferentially react with the biodegradable or non-biodegradable NOM. In addition, the type or dose of oxidation applied did not affect the observed rate of biodegradation. The rate kinetics for biodegradation were constant for all oxidation conditions investigated. Oxidation prior to biofiltration increased the overall removal of organic matter, but did not affect the rate of biodegradation of NOM.
Civil and Mechanical Engineering Building 2002 - 6250, Applied Science Lane, Vancouver, BC, Canada V6T 1Z4. Electronic address: kblack@alumnic.ubc.ca.
Kerry E
KE
Black
Civil and Mechanical Engineering Building 2002 - 6250, Applied Science Lane, Vancouver, BC, Canada V6T 1Z4. Electronic address: berube@civil.ubc.ca.
Pierre R
PR
Bérubé
D001673:Biodegradation, Environmental; D002244:Carbon; D004203:Disinfection; D060766:Drinking Water; D005374:Filtration / Q000379:methods*; D007700:Kinetics; D008970:Molecular Weight; D010084:Oxidation-Reduction; D010126:Ozone; D014466:Ultraviolet Rays; D018508:Water Purification / Q000379:methods*; D060753:Water Quality
D060766:Drinking Water; D010126:Ozone; D002244:Carbon
AOP; Biofiltration; Drinking water treatment; NOM; Ozone