摘要
以两个钛网涂层的DSA电极(Ti/Sb-SnO2/PbO2)作阳极,一个不锈钢板作阴极,形成一个双阳极的电化学反应体系。以模拟的β-萘磺酸生产废水为研究对象,系统地考察反应时间、电流密度、初始pH值等因素对废水中污染物的去除能力的影响。结果表明,在电流密度为50 mA/cm2,初始pH值为3.0,电解质浓度为10 g/L的Na2SO4,反应240 min后COD去除效率达到88.0%。为了提高处理效率和加快反应速率,我们给DSA电极体系中添加粒子电极(MnO2/γ-Al2O3),在不变的反应条件下,120 min后COD去除效率达到91.2%,意味着一种简单而有效地处理β-萘磺酸生产废水方法变成现实。
The electrochemical reaction system of double-anode and single cathode was formed with Ti/Sb-SnOJPbO2 as anode and steel plate as cathode. An investigation of the electrochemical oxidation of β-naphthalene sulphonic acid in synthetic wastewater was performed, and operating parameters such as electrolysis time, the current density and initial pH were also discussed. According to the experiment results, a chemical oxygen demand （COD） removal efficiency of 88.0 % was obtained in 240 min at initial pH 3.0 and current density was equal to 50 mA/cm2. In order to improve the efficiency of oxidation and accelerated the reaction rate, the particle electrode （MnO2/y-Al2O3） was applied in the electrochemical treatment of β-naphthalene sulphonic acid wastewater, a satisfactory result that a chemical oxygen demand （COD） removal efficiency of 91.2 % was obtained in 120 min at the same conditions. It means that a high-efficient treatment technology of β-naphthalene sulphonic acid wastewater was achieved successfully.
出处
《能源环境保护》
2012年第6期17-20,共4页
Energy Environmental Protection
基金
浙江省大学生科技创新活动计划暨新苗人才计划(2012R406037)
