芬顿试剂降解苯酚研究.doc

芬顿试剂降解苯酚研究 摘要:论文采用芬顿试剂降解苯酚模拟废水，研究了pH反应时间，反应温度，苯酚模拟废水浓度及芬顿试剂中Fe2+与H2O2摩尔比等因素的影响，得到如下结论。 1 芬顿试剂处理苯酚模拟废水的最佳运行条件为：pH值为3，反应时间为60min，反应温度为25℃，苯酚模拟废水的浓度为100mg/L，芬顿试剂中Fe2+与H2O2摩尔比为1:5，此条件下苯酚降解率92.7%。 2 Fe2+与H2O2摩尔比Fe2+与H2O2摩尔比 关键词：芬顿试剂；降解率；苯酚 The study on Fenton degradation of phenol Abstract: In this paper, Fenton degradation of phenol wastewater studied pH, reaction time, reaction temperature, concentration of phenol wastewater and Fenton reagent Fe2+on the molar ratio of H2O2 and other factors, the following conclusions. 1 Fenton Treatment of phenol wastewater optimum operating conditions: pH value of 3, the reaction time was 60min, the reaction temperature is 25 ℃, the concentration of phenol wastewater was 100mg / L, Fentons reagent molar ratio of Fe2 + /H2O2 is 1:5, under these conditions the degradation rate of 92.7% phenol. 2 phenol degradation rate increases of pH and then decreased when the pH is 3 maximum degradation rate; degradation rate of phenol as time increases gradually become larger, the reaction to 60min later, the degradation rate basically stable and unchanging ; phenol degradation rate increases with the concentration of phenol wastewater decreased first increases slowly when the concentration of phenol wastewater 100mg / L maximum degradation rate; degradation rate of phenol with H2O2 /Fe2 + decreases with increase in the molar ratio of the first reduced, Fe2 + and H2O2 molar ratio of 1:5, the maximum degradation rate. Phenol degradation rate increases as the temperature increases first and then decreases, the maximum degradation rate when the temperature is 25 ℃; Keywords: Fenton reagent; degradation rate; phenol. 1 绪论 1.1 研究背景 水是维系人类生存的基本物质，是工农业生产和社会发展不可缺少的重要资源，人类普遍认为水是取之不尽，用之不竭的自然资源，但是随着人口的增长以及经济的发展对水资源的要求越来越多，同时对水资源的污染也越来越严重，双重压力造成水资源紧缺。，[1]。我国工业迅速发展，工业生产中消耗水 量大，工业废水携带化学物质被大量排入河流湖泊造成严重污染；随着我国城市 建设以及生活质量的提高对城市生活用水需求量增加，导致生活污水量急剧增加。工业废水与生活污水会导致湖泊等水体的水质富营养化，污水处理成为社会发展的必备条件，传统的污水处理采用的是生物法，其为目前使用的成本低且处理效率较高的处