【摘要】 采用生物滤柱对地下水进行试验研究,用膜过滤法对其出水进行了分子量分析,考察了生物除铁滤柱对不同分子量区间天然有机物的去除效果。结果表明:有机物分子量大小对出水水质有较大的影响,有机物分子量越大,铁去除率越低,DOC和UV254去除率也越低。生物滤柱对原水中分子量<1 kDa的有机物的去除率为82.4%,而对分子量>30 kDa的有机物的去除率只有28.5%。更多还原

【Abstract】 Biofilter was applied on a pilot case of groundwater treatment.Membrane filtration was applied for the analysis of molecular weight of effluent.The efficiencies of biofilter on the removal of natural organic matter(NOM) with different molecular weights were investigated.The results showed that molecular weight of organic matter had certain effect on effluent quality.The greater the molecular weight,the removal rates of iron,DOC and UV254 were lower.The removal rate of NOM was 82.4% for molecular weight less than 1 kDa,and only 28.5% for molecular weight greater than 30 kDa.更多还原