超临界水氧化法及其在有机废水处理中的应用

Supercritical water oxidation method and its application in organic wastewater treatment

对超临界水的性质,超临界水氧化法的原理、工艺流程和发展现状进行了介绍和综述。超临界水氧化法处理含芳香族有机废水,随反应温度和压力的升高及停留时间的延长,苯酚去除率提高,在很短的停留时间内,苯酚的去除率可达96%以上。超临界水氧化法对废水中的乙酸,去除率最高可达99%。最后,指出了目前超临界水氧化法存在的问题及今后的发展方向。

A review was given on the feature of supercritical water and the principle, technological process, and progress of supercritical water oxidation method. In the treatment of wastewater containing aromatic compounds using the supercritical water oxidation method, the removal rate increases with the increase of temperature, pressure, and retention time. The removal rate of phenol can reach 96 % or more during a short retention time, and the highest removal rate of acetic acid in wastewater is 99 %. The existing problems and development tendency of the method are pointed out.