Cite this paper:
CHEN Yizhong, ZHU Jianrong. Observation and simulation of 2-methylisoborneol in the Qingcaosha Reservoir, Changjiang estuary[J]. HaiyangYuHuZhao, 2018, 36(5): 1586-1596

Observation and simulation of 2-methylisoborneol in the Qingcaosha Reservoir, Changjiang estuary

CHEN Yizhong1,2, ZHU Jianrong1
1 State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China;
2 Shanghai Academy of Environmental Sciences, Shanghai 200233, China
Abstract:
2-Methylisoborneol (2-MIB) is a cyanobacterial metabolite that is responsible for many taste and odor (T&O) complaints related to the aesthetics of drinking water and poses a problem for water authorities because it is recalcitrant during conventional water treatment. A numerical model was developed to simulate 2-MIB in the Qingcaosha Reservoir, an estuarine drinking water resource in the Changjiang estuary with known 2-MIB episodes. The objective of this study was to numerically simulate the generation and release processes of 2-MIB in the reservoir and to provide useful information for better management of drinking water resources experiencing T&O problems caused by cyanobacteria. The simulation results from 2009 to 2013 showed that the simulated 2-MIB concentrations corresponded well to the observational data. 2-MIB was released mainly during periods of low dissolved oxygen (DO) levels with an adequate potential sediment source. The temporal and spatial variations in nutrients, chlorophyll-a (Chl-a), Cyanophyta and 2-MIB were presented and analyzed during 2009 to 2013. According to the study results, high-concentration areas and peak levels of 2-MIB can be controlled by inhibiting algal growth and increasing oxygen levels in the water, which can be achieved via adequate water exchange and oxygen exposure in the reservoir, respectively.
Key words:    2-methylisoborneol|taste and odor|drinking water resource|cyanobacteria|ecological model   
Received: 2017-04-19   Revised:
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