TY - JOUR
T1 - Evaluate HAA removal in biologically active carbon filters using the ICR database
AU - Tung, Hsin hsin
AU - Xie, Yuefeng F.
N1 - Funding Information:
Acknowledgements This study was supported by “Taiwan NSC” (No. 96-2221-E-002-051) and “USEPA Small Public Water Technology Assistance Center”. The authors thank Dr. Alexa Obolensky of Philadelphia Water Department for the assistance in database analysis.
PY - 2011/12
Y1 - 2011/12
N2 - The effects of biologically active carbon (BAC) filtration on haloacetic acid (HAA) levels in plant effluents and distribution systems were investigated using the United States Environmental Protection Agency's Information Collection Rule (ICR) database. The results showed that average HAA5 concentrations in all locations were 20. 4 μg·L -1 and 29. 6 μg·L -1 in ICR plants with granular activated carbon (GAC) and ICR plants without GAC process, respectively. For plants without GAC, the highest HAA levels were observed in the quarters of April to June and July to September. However, for plants with GAC, the highest HAA levels were observed in the quarters of April to June and January to March. This HAA level profile inversely correlated well with water temperature, or biologic activity. For GAC plants, simulated distribution samples matched well with distribution system equivalent samples for Cl 3AA and THMs. For plants with and without GAC, simulated distribution samples overestimated readily biodegradable HAAs in distribution systems. The study indicated that through HAA biodegradation, GAC process plays an important role in lowering HAA levels in finished drinking water.
AB - The effects of biologically active carbon (BAC) filtration on haloacetic acid (HAA) levels in plant effluents and distribution systems were investigated using the United States Environmental Protection Agency's Information Collection Rule (ICR) database. The results showed that average HAA5 concentrations in all locations were 20. 4 μg·L -1 and 29. 6 μg·L -1 in ICR plants with granular activated carbon (GAC) and ICR plants without GAC process, respectively. For plants without GAC, the highest HAA levels were observed in the quarters of April to June and July to September. However, for plants with GAC, the highest HAA levels were observed in the quarters of April to June and January to March. This HAA level profile inversely correlated well with water temperature, or biologic activity. For GAC plants, simulated distribution samples matched well with distribution system equivalent samples for Cl 3AA and THMs. For plants with and without GAC, simulated distribution samples overestimated readily biodegradable HAAs in distribution systems. The study indicated that through HAA biodegradation, GAC process plays an important role in lowering HAA levels in finished drinking water.
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U2 - 10.1007/s11783-011-0312-8
DO - 10.1007/s11783-011-0312-8
M3 - Article
AN - SCOPUS:82655182057
SN - 1673-7415
VL - 5
SP - 489
EP - 496
JO - Frontiers of Environmental Science and Engineering in China
JF - Frontiers of Environmental Science and Engineering in China
IS - 4
ER -