Title :
Removal of MIB and geosmin in drinking water by biological activated carbon process
Author :
Yu, Liying ; Zhou, Beihai ; Yuan, Rongfang ; Shi, Chunhong ; Gu, Junnong ; Zhang, Chunlei
Author_Institution :
Sch. of Civil & Environ. Eng., Univ. of Sci. & Technol. Beijing, Beijing, China
Abstract :
2-methylisoborneol (MIB) and geosmin cannot readily be removed by conventional water treatments. Biological activated carbon (BAC) process is an attractive option for MIB and geosmin removal. For BAC filter inoculated with a consortium of MIB and geosmin biodegraders, the removal efficiency of MIB (geosmin) in a period of 4d was 100% (100%), and the figure was 75% (90%) for ceramic filter. For BAC filter, removal of MIB and geosmin increased rapidly with the extension of empty bed contact time (EBCT) at first, and resulted in no obvious change when EBCT was longer than 12min. MIB (geosmin) removal efficiency of BAC filter was 99% (99%) at the stage of 12min when filter height was 550mm, among which 32 35% (18-20%) was removed by ceramic filter. The MIB and geosmin concentrations apparently decreased in the up layers of the biofilter (0-100 mm). For MIB and geosmin with an initial concentration of 500ng/L, filter height of 400mm was enough for removing MIB and geosmin to below its odor threshold concentration.
Keywords :
water treatment; 2-methylisoborneol; BAC filter; MIB; biological activated carbon process; drinking water; empty bed contact time; geosmin; water treatments; Algae; Aquaculture; Biodegradation; Carbon; Ceramics; Waste management; MIB; biological activated carbon; drinking water; geosmin;
Conference_Titel :
Electric Technology and Civil Engineering (ICETCE), 2011 International Conference on
Conference_Location :
Lushan
Print_ISBN :
978-1-4577-0289-1
DOI :
10.1109/ICETCE.2011.5776418
