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AWWA QTC97077
- Evaluating PAC Adsorption of MIB, Geosmin, and IPMP in Detroit River Source Water
- Conference Proceeding by American Water Works Association, 01/01/1997
- Publisher: AWWA
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The Detroit Water and Sewerage Department (DWSD) of Detroit, Michigan, experiences periodic taste and odor events in raw water supplies from the Detroit River. During these episodes, the DWSD receives complaints from customers throughout the system. The objective of this study was to evaluate the use of powdered activated carbon (PAC) to mitigate and control taste and odor in the DWSD system. Detroit River water samples were spiked with MIB (2-methylisoborneol; musty odor), geosmin (earthy odor) and IPMP (2-isopropyl-3-methoxy-pyrazine; decaying vegetation/musty odor. Three brands of PAC were tested including a wood-based PAC, a lignite-based PAC and a bituminous-based PAC. PAC was dosed in a slurry form, sodium hypochlorite was used for chlorination and analytical grade aluminum sulfate was used as coagulant.
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