AWWA WQTC65779

The Stage 2 Disinfectants/Disinfection Byproducts Rule (DBPR) will present acompliance challenge for many drinking water utilities. Consecutive drinking water systems willbe particularly susceptible to these challenges. The American Water Works AssociationResearch Foundation (AwwaRF) and the U.S. Environmental Protection Agency (USEPA) jointlyfunded Project # 3026, "Evaluation of Disinfection Practices for DBP and Precursor Occurrencein Consecutive Systems." The purpose of this nearly three year effort was to identify the factorswhich most significantly impact disinfection byproduct (DBP) formation in consecutive systems(CSs) and determine effective control strategies to reduce DBP formation in CSs. It was foundthat, regardless of the disinfection strategy, trihalomethanes (THMs) were the predominant DBPspecies formed in CS distribution systems. It was also observed that on average about 60 to 65percent of the maximum DBP concentrations observed were formed in the water treatment plantand 75 to 80 percent were formed before the point of delivery to the consecutive system. Thisemphasizes the importance of treatment optimization in controlling DBPs, and in many casesmay reduce the effectiveness of water age management strategies which were identified as bestavailable technology (BAT) for consecutive systems in the Stage 2 DBPR. Includes reference, tables, figures.

Product Details

Edition:

Vol. - No.

Published:

11/01/2007

Number of Pages:

14

File Size:

1 file , 280 KB