AWWA WQTC55209 Selective DBP Precursor Removal With an Innovative Ion Exchange Process

Conference Proceeding by American Water Works Association, 01/01/2001

Delphos, Paul J.;Harr, Karen;Bianco, Tandy L.

Full Description

The City of Chesapeake, Virginia has provided a reliable and safe drinking water to its customers for many years. The City has been providing this drinking water despite a water supply that is extremely high in organics with seasonal outbreaks of chlorides. As a result, the 10-mgd Northwest River Water Treatment Plant receives water that is frequently difficult to treat. This water requires very high coagulant dosages during all times of the year and seasonal reverse osmosis treatment to meet the EPA Stage 1 Disinfection Byproduct (DBP) standard for trihalomethanes (THM) of significant reductions in the treated water THM and HAA formation potentials can be achieved with MIEX(R) pretreatment; MIEX(R) pretreatment allowed a greater than 75% reduction in the alum dose to meet the plant TOC removal performance, also reducing sludge production by over 75%; and, the resulting downstream savings in treatment costs after MIEX pretreatment will be $0.10/kgal. This savings includes debt service on the capital improvements for the new MIEX treatment system. Includes reference, tables, figures.

Product Details

Edition: Vol. - No. Published: 01/01/2001 Number of Pages: 9 File Size: 1 file , 340 KB