AWWA WQTC69376

This powerpoint presentation begins by presenting the following study objectives: analyze potential sources of MTBE (methyl tertiary-butyl ether)contamination based on publicly available information;conduct groundwater flow and contaminant transport modeling toevaluate short and long-term trends in MTBE concentrations;develop MTBE raw water and finished water design criteria;conduct comparative analysis of air stripping and granular activatedcarbon (GAC) such as cost estimates andlife cycle cost analysis; and,select a treatment technology for application at Station 6. Project background includes the following:New York City (NYC) Department of EnvironmentalProtection (DEP) is reactivating a seriesof groundwater wells in Brooklyn andQueens; the wells range in depth from 80 to 150feet; and,water quality concerns include iron, manganese,hardness, andMTBE and tetrachloroethylene (PCE). Station 6 Demonstration Plant is a new 10-mgd treatmentplant thattreats water from 6 wells andprovides treatment for thefollowing:iron / manganese;volatile organic compounds(VOC's) removal; and,softening. Presentation conclusions indicate that GAC is recommended for VOC removal at the Station6 Plant for the following reasons:lower initial capital cost and life cycle cost; more amenable to technology changes/upgrades;smaller overall footprint;simpler building design; and,ability to treat range of contaminants(concentrations and types). Includes tables, figures.

Product Details

Edition:

Vol. - No.

Published:

11/01/2008

Number of Pages:

23

File Size:

1 file , 1.3 MB