AWWA JAW62274

Depletion of existing groundwater sources forced Tampa Bay(Fla.) Water to use alternative sources for drinking water supply.To help determine the effect of alternate source water qualityon distribution system water quality, a kinetic model for nitrificationwas developed using Monod kinetics. The model wastested on finished waters that had been produced from groundwater,surface water, and saline sources and then distributed topilot distribution systems.Many US utilities have implemented chloramination for residualand disinfection by-product control. Nitrification has been reportedby some of these water providers using chloramines in their distributionsystems. The steady-state plug-flow model described herepredicted ammonia, nitrite, and nitrate in the presence of chloraminesas well as active ammonia-oxidizing bacterial biomass andnitrite-oxidizing bacterial biomass.This model is one of the first developed specifically for drinkingwater distribution systems and from data from a large-scalefield study. It provides the water community with a tool previouslyunavailable, i.e., a fundamental model for predicting nitrificationin chloraminated distribution systems. By using the model toestimate nitrification, water providers can take a proactiveapproach to controlling nitrification in their systems. Includes 43 references, 4 tables, 10 figures.

Product Details

Edition:

Vol. 97 - No. 10

Published:

10/01/2005

Number of Pages:

11

File Size:

1 file , 440 KB