【摘要】 考察了不同晶化温度下制备的铁铝复合吸附剂去除PO₄^3--P的性能以及pH值和共存干扰离子CO₃^2-对其吸附去除PO₄^3--P性能的影响.结果表明,晶化温度对铁铝复合吸附剂去除PO₄^3--P的性能有显著影响,较低晶化温度下制备的铁铝复合吸附剂去除PO₄^3--P效果明显优于高温制备的吸附剂;晶化温度的升高使晶体本身结构发生变化,导致比表面积降低,是其吸附性能下降的主要原因;较低晶化温度下制备的铁铝复合吸附剂去除PO₄^3-P的性能受pH值影响较小,对水质适应性强;共存离子CO₃^2--对铁铝复合吸附剂去除PO₄^3-P的性能具有强抑制作用,应用中应该尽量避免这种负面干扰作用的存在.更多还原

【Abstract】 Performance of phosphate removal by iron-aluminum composited adsorbent is studied under different crystallization temperature.Influences of pH value and coexisting ions of CO₃^2- to performance of adsorption phosphate removal are investigated.Results show that phosphorus removal performance of the adsorbent is influenced remarkably by crystallization temperature.Phosphorus removal performance of the adsorbent prepared at lower temperature has better performance than that at higher temperature.The main reason of decreasing adsorption performance is that the specific surface area is reduced by crystal structure change caused by increasing crystallization temperature.Phosphorus removal performance of the adsorbent prepared at lower temperature is less influence by pH value.The adsorbent shows good adaptability to water quality.Phosphorus removal performance of the adsorbent is played strongly inhibitory action by coexistent ion CO₃^2-.The opposite negative interference action should be avoided in practical applications.更多还原