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目前,水处理机构普遍认为,天然有机物会妨碍活性炭的吸附位点与异味化合物结合,进而导致对甲萘烷醇和2-甲基异茨醇的清除效率下降。腐植酸也被认为具有相同的作用。对于城市水处理系统来说,饮用水中异味化合物如甲萘烷醇和2-甲基异茨醇的清除至关重要。已证实,环糊精聚氨酯可清除水中有机污染物,但不会显著降低天然有机物的含量。我们希望确定在有天然有机物存在的条件下,该聚合物是否能够有选择地去除甲萘烷醇和2-甲基异茨醇。本研究以腐植酸为天然有机物代表,因腐植酸约占天然有机物的70%。研究表明,不同浓度腐植酸的存在不会影响甲萘烷醇和2-甲基异茨醇的清除,使用环糊精聚合物,90%的异味化合物被去除。同时,紫外分析表明只有少量的腐植酸(3%～20%)被去除。
At present, water treatment agencies generally believe that natural organic matter will prevent the adsorption site of activated carbon and odor compounds combined, leading to the removal of dehydroacetonin and 2-methyl-i-butyl alcohol decreased efficiency. Humic acid is also considered to have the same effect. For urban water treatment systems, the removal of odorous compounds such as mesitol and 2-methylisobutyl alcohol in drinking water is of crucial importance. It has been demonstrated that cyclodextrin polyurethanes eliminate organic contaminants in the water but do not significantly reduce the content of natural organic matter. We want to determine whether the polymer can selectively remove both melatonol and 2-methylisobutyl alcohol in the presence of natural organic matter. In this study, humic acid is a natural organic substance, humic acid accounts for about 70% of natural organic matter. Studies have shown that the presence of different concentrations of humic acid does not affect the removal of 2-methylbenzyl alcohol and 2-methyl-i-butyl alcohol, the use of cyclodextrin polymer, 90% of the odor compounds are removed. Meanwhile, UV analysis showed that only a small amount of humic acid (3% ~ 20%) was removed.