从天然沸石对氨氮的吸附动力学、吸附平衡、pH对吸附的影响及其作为垂直流人工湿地(Vertical flow constructed wetland,VFCW)的填料处理生活污水的效果进行了研究.结果表明,该沸石对氨氮的吸附行为符合Langmuir和Freundlich吸附等温式,最大吸附量为8.10mg/g;与颗粒内扩散模型相比,假二级反应模型能更好地描述沸石对氨氮的吸附全过程；沸石吸附氨氮的最佳pH为4.0～8.0.VFCW对氮的去除率(R,％)前3个月在90％以上,随后的7个月逐渐降低；当进水氨氮累计量与VFCW内沸石可吸附的最大氨氮量的比例(r)≤150％时,R与r呈线性关系.%Adsorption kinetics,adsorption equilibrium isotherms and the effect of pH on the removal of ammonium using natural zeolite were investigated. The results showed that the adsorption plots fit to Lang-muir and Freundlich models very well, with the maximum ammonium adsorption capacity of 8. 10 mg/g. Compared with the intra-particle diffusion kinetic model, the pseudo-second-order model reflected more reasonable for ammonium ion uptake on zeolite. The optimum adsorption capacity of ammonium was obtained at pH in the range of 4. 0~8. 0. And a vertical flow constructed wetland ( VFCW) was constructed with the zeolite. The results showed that the ammonium removal efficiency of VFCW (R, %) was more than 90% in the first 3 months of operation,and decreased gradually in the subsequent 7 months. When the rate of the cumulative amount of ammonium in the influent to the maximum ammonium adsorption capacity of the zeolite filled in VFCW (r,%) was less than 150%, there was a linear relationship between R and r, which will be benefit for the design and operation of VFCW in the actual application.
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