膜法曝气氧化亚硫酸铵实验研究

发布时间：2018-03-29 00:35

  本文选题：膜法曝气　切入点：氧化　出处：《膜科学与技术》2017年02期

【摘要】：以空气为曝气气源,采用自制聚丙烯中空纤维膜接触器为核心装置,系统地考察了亚硫酸铵初始浓度、气液比、液相流速、气液相压差、液相温度、高浓度硫酸铵以及膜接触器填充密度等因素对亚硫酸铵氧化率的影响.结果表明:亚硫酸铵氧化率随其初始浓度的升高而降低;对于10L浓度为0.1mol/L的亚硫酸铵溶液,在气液比为3∶1,液相流速为5L/min,气液相压差为0.015 MPa,液相温度为50℃,膜接触器填充密度为45%时,反应1h后,溶液氧化率达到98.94%;在空气流量相同的情况下,膜法曝气的氧化效果优于传统曝气.研究结果初步证实了膜法曝气工艺用于氧化亚硫酸铵溶液的可行性.
[Abstract]:Using air as aeration source and self-made polypropylene hollow fiber membrane contactor as the core device, the initial concentration of ammonium sulfite, the ratio of gas to liquid, the flow rate of liquid phase, the pressure difference of gas and liquid phase, and the temperature of liquid phase were systematically investigated. Effects of high concentration of ammonium sulfate and density of membrane contactor on the oxidation rate of ammonium sulfite. The results show that the oxidation rate of ammonium sulfite decreases with the increase of initial concentration, and for ammonium sulfite solution with 10L concentration of 0.1mol/L, the oxidation rate of ammonium sulfite decreases with the increase of the initial concentration of ammonium sulfite. When the gas-liquid ratio is 3: 1, the liquid flow rate is 5 L / min, the pressure difference between gas and liquid is 0.015 MPA, the liquid temperature is 50 鈩，

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