AWWA ACE62966

This slide presentation outlines a study concerned with the potential impact of wastewater treatment plant (WWTP) effluents on downstream drinking water supplies. In particular, the study focuses on: increased levels of Natural Organic Matter(NOM);different character of NOM, i.e.WWTP NOM becoming Effluent Organic Matter (EfOM); and, theimpact on disinfection byproducts (DBPs), specificallylevels, types, and speciation of DBPs. Topics covered include; analytical techniques for EfOM/NOM characterization; NOM/EfOM Characterization studies including representative results of three wastewater treatment plants on an effluent-impacted river; representative results of DBP formation potential(FP) levels; and,NOM and EfOM propertiesvs DBPFP levels, specificallyWWTPs and drinking water (DW) supplies (withvarying EfOM impacts) inmultiple watersheds. Summary of conclusions included: WWTP EfOM ¿¿¿¿¿¿¿ NOM in DW supplies sinceEfOM is more polar, less humic, higher in N;differences in DBP precursors includedTHMs (humic) vs HAAs (non-humic), andN-DBPs (e.g., HANs, NDMA) and Br-DBPs(elevated Br- levels in EfOM);relevance to algal-impacted DW sources revealedsimilarities between AOM and EfOM; and,EfOM is more biodegradable than NOM which indicates that biological treatment (at the DWTP orin the environment, River Bank Filtration), should be able to remove a portion of theEfOM (and precursors for some DBPs). Includes table, figures.

Product Details

Edition:

Vol. - No.

Published:

06/01/2006

Number of Pages:

30

File Size:

1 file , 2.2 MB