氨氮废水中SO4^2-去除的研究

Study on the Removal of SO4^2- in Ammonia Nitrogen Wastewater

对氨氮废水中SO4^2-的去除进行了研究,结果表明,黄铵铁矾沉淀对SO4^2-有较好的去除效果。研究发现,在反应温度为100℃、反应终点pH值为2.0、反应时间为2.0 h、FeCl3用量为1.1倍理论值、溶液SO4^2-初始浓度为38.2 g/L的条件下,SO4^2-的去除率可以达到92.91%。利用X射线衍射(XRD)、扫描电镜(SEM)、能谱仪(EDS)、化学分析等手段对产物进行了表征。

The removal of SO4^2-in ammonia nitrogen wastewater was studied, and the results showed that the precipitation of ammoniojarosite had a good effect on the removal of SO4^2-. Those studies have shown that under the conditions that the reaction temperature is 100 ℃, end pH value of the reaction is 2.0, the reaction time is 2.0 h, FeCl3 dosing is 1.1 times the stoichiometric requirment, and the initial SO42-concentration is 38.2 g/L, the removal rate of SO4^2-could reach 92.91 %. The samples were characterized by X-ray diffraction(XRD), Scanning Electron Microscope(SEM), Energy Dispersive Spectrometer(EDS) and chemical analysis.