Behavior of Musty Odorous Compounds during the Process of Water Treatment
Behavior of Musty Odorous Compounds during the Process of Water Treatment
复制标题
水处理过程中霉味化合物的行为
DOI：
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复制
发表时间：
1988
期刊：
影响因子：
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通讯作者：
K. Fujiwara
中科院分区：
文献类型：
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作者：
K. Ashitani;Y. Hishida;K. Fujiwara
土臭素和2-甲基异麦芽糖醇（MIB）是导致饮用水中霉味问题的两种致病化合物。土臭素和MIB在原水中存在于溶液中，并以悬浮形式主要与宿主蓝藻。悬浮形式的土臭素和MIB通过单独的混凝和沉淀被很好地去除。土臭素存在于溶液中可以去除几乎检测不到的水平，在快速砂滤器的中试工厂，没有预氯化的做法。然而，断点预氯化迫使宿主藻类内存在的土臭素和MIB泄漏到水中。在实施折点预氯化的工厂中，沉淀池中MIB的浓度在白天降低，但在夜间不降低。在存在游离余氯的情况下，土臭素和MIB在阳光下均会分解。
Geosmin and 2-methylisoborneol (MIB) are two of the causative compounds responsible for the musty odor problem in drinking water. Geosmin and MIB in raw water were present both in solution and in a suspended form mostly associated with the host cyanobacteria. Geosmin and MIB in suspended form were well removed by coagulation and sedimentation alone. Geosmin present in solution could be removed almost to an undetectable level in the rapid sand filter of the pilot plant where no pre-chlorination was practiced. Breakpoint pre-chlorination, however, forced geosmin and MIB present inside of the host algae to leak into the water. The concentration of MIB decreased in a sedimentation basin during the daytime, but not at night in the plant practicing breakpoint pre-chlorination. Geosmin and MIB were both decomposed under sunlight in the presence of free residual chlorine.