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4249662 
Journal Article 
Occurrence and Emergency Response of 2-Methylisoborneol and Geosmin in a Large Shallow Drinking Water Reservoir 
Liu, H; Pan, D; Zhu, M; Zhang, D 
2016 
Yes 
CLEAN - Soil, Air, Water
ISSN: 1863-0650
EISSN: 1863-0669 
44 
1 
63-71 
WOS:000369959100008 
Taste and odor causing compounds (TOCCs) especially 2-methylisoborneol (MIB) and geosmin (GSM) should be eliminated because of increasing complaints of undesirable musty and earthy odor in drinking water. Spatial and temporal distributions of MIB and GSM in a large shallow drinking water reservoir were investigated since its first filling. The results showed that the GSM concentration was <15 ng/L and its potential to cause a taste and odor event was small. The concentrations of MIB in the transition zone were higher than in the riverine and the lacustrine zones of the reservoir and could reach 330 ng/L during warmer seasons, which was an alarm for taste and odor events. Emergency response practices showed that (i) powdered activated carbon was effective in removing MIB while the raw water was flowing through the pipes to the drinking water treatment plants (DWTPs); (ii) the ozone-biological activated carbon process was effective in removing MIB in DWTPs; and (iii) the combination of these two technologies could ensure that the MIB content in treated water stayed below the olfactory threshold concentration even when its concentration in the reservoir was >300 ng/L. Continuous monitoring of TOCCs not only provides water quality information to the reservoir operators but also shows the development of TOCCs, which would help researchers and engineers to find effective ways preventing the occurrence of TOCCs in drinking water. 
Algae; Taste and odor causing compounds; Water quality; Water supply reservoir