摘要：

介绍了地下水中存在的有机物的种类,重点探讨了腐殖酸和多环芳香烃(PAHs)对地下水除铁的影响。当腐殖酸大量存在时,地下水除铁不宜采用自然氧化法和化学氧化法,而采用混凝法是行之有效的,对于接触氧化除铁和生物除铁则需要进一步的探讨和研究。应用曝气生物过滤是同时去除地下水中PAHs和铁的经济有效的方法。

关键词: 腐殖酸, 多环芳香烃, 地下水除铁, 曝气生物过滤

Abstract:

Organisms existing in groundwater are introduced, stress on discussing the effect of humic acids and poly-cyclic aromatic hydrocarbons on removing iron from groundwater. In the presence of humic acids, natural oxidation and chemical oxidation are not effective. Yet contact oxidation and biological removal of iron need further study. Soluble Fe(Ⅱ) complexed by humic acids is amenable to removal by alum coagulation. Aerated biofiltration is an economical and effective method for simultaneous removal of iron and polycyclic aromatic hydrocarbons from groundwater.

Key words: humic acids, olycyclic aromatic hydrocarbons, removing iron from groundwater, aerated biofiltration

中图分类号: 

• X523