预氧化去除太湖水中有机物和臭味物质的研究

Study on the pre-oxidation of organics and odor in Taihu Lake

研究臭氧、高锰酸钾和次氯酸钠去除太湖水有机物和臭味物质的去除效果。试验结果表明,臭氧易于降解大分子有机物,而高锰酸钾和次氯酸钠易于降解小分子有机物。氧化降解β-环柠檬醛(β-Cyclocitral)的效果最佳,其次为β-紫罗兰酮(β-Ionone),土臭素(geosmin,GSM)和二甲基异冰片(2-methylisoborneol,2-MIB)的降解效果最差。太湖水的臭味降解规律与其相似。研究还表明,太湖水的有机物会促进次氯酸钠降解臭味物质。

The effect of ozone potassium permanganate and sodium hypochlorite on removing organics and taste and odor compounds in Taihu Lake was investigated.The experimental results showed that ozone would tend to remove organics with higher molecular weight.However,potassium permanganate and sodium hypochlorite would tend to remove organics with lower molecular weight.It was found that the effect of oxidation ofβ-Cyclocitral was best,followed byβ-Ionone and GSM and 2-MIB was least.Oxidation of taste and odor compounds in Taihu Lake showed the same trendency.It was also found that organics in Taihu Lake could promote destruction of taste and odor compounds by sodium hypochlorite.