河南某地天然沸石脱氮除磷性能的研究

The Study of Nitrogen and Phosphorus Removal from Simulated Municipal Secondary Effluent Using Natural Zeolite

以河南某地沸石为试验材料,进行单因素实验,考查粒径、转速、用量对沸石脱氮除磷效果的影响.同时探讨了该沸石吸附氨氮的规律,进行了等温吸附试验.实验结果表明:粒径小于0.25 mm,转速为100 r/min,用量为42 g/L时的吸附效果最好.该沸石对氨氮的吸附等温线符合Langmuir公式,其氨氮的吸附容量为8.116 9 mg/g.

Natural zeolite which is native to Henan province and Single factor experiment are used in this experiment.grain size,rotate speed,dosage which are the factors in nitrogen and phosphorus removal process are considered.At the same time,The kinetics of NH＋4 adsorption by this zeolite was investigated and the isothermal adsorp-tion experiments were carried out.The results show that the best adsorption effect is that grain size is less than 0.25 mm and the rotate speed is 100 r/min and the dosage is 42 g/L.The process of ammonium adsorption by the natural zeolite is in accordance with Langmuir adsorption isotherm.The maximum of NH＋4 adsorption by the zeolite is 8.116 9 mg/g.