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采用铁盐溶液蒸发法制备沸石负载氧化铁吸附剂,探讨其对磷的吸附性能。结果表明:随着沸石负载氧化铁吸附剂投加量的增加,单位质量吸附剂对磷的吸附量先升高后降低;磷的去除率随负载铁含量的增加而升高;p H=7时,去除率高达92.6%;吸附剂对磷的去除率受共存离子的影响较小;吸附数值可采用Freundlich等温模型拟合,相关性显著;吸附过程很好地遵循准二级动力学模型;采用Na OH为再生剂效果较好,再生率随着Na OH溶液浓度的提高而提高。
The iron oxide solution was used to prepare zeolite loaded iron oxide adsorbent and the adsorption of phosphorus on it was discussed. The results showed that with the increase of zeolite loaded iron oxide sorbent dosage, the adsorption amount of phosphorus per unit mass of sorbent increased firstly and then decreased; the phosphorus removal rate increased with the increase of iron content; p H = 7 , The removal rate was as high as 92.6%. The removal rate of phosphorus by adsorbents was less affected by the coexistence of ions. The adsorption values could be fitted by Freundlich isotherm model with significant correlation. The adsorption process followed the quasi-second- The use of Na OH as regeneration agent is better, and the regeneration rate increases with the concentration of NaOH solution.