共查询到17条相似文献,搜索用时 406 毫秒
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湿式空气氧化法及其应用 总被引:2,自引:0,他引:2
本文综述了湿式空气氧化法的基本工艺系统、氧化过程、主要技术指标和参数、装置的类型与划分;介绍了国外应用和研究的实例;并进行了技术经济分析。 相似文献
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湿式空气氧化法处理高浓度含硫废水的研究 总被引:4,自引:0,他引:4
本文探讨了湿式空气氧化法处理高浓度含硫废水的过程,通过预实验和正交实验确定了最佳工艺条件,并讨论了其反应过程动力学。其结果表明,该湿式氧化过程为一复杂的连串反应,但就 Na_2S 和 COD 浓度而言,反应速度均为一级反应。 相似文献
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湿式空气氧化法处理有害工业废水 总被引:8,自引:2,他引:6
本文着重叙述了湿式空气氧化法对有害工业废水的解毒作用;并将该法的处理成本与焚烧法进行了比较;较详细地综述了湿式空气氧化法的应用情况。 相似文献
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超临界水氧化法处理有机污染物 总被引:13,自引:1,他引:13
介绍了超临界水氧化法处理有机污染物的基本原理,工艺流程和应用实例及使用范围,对比分析了超临界水氧化法与焚烧法处理有机污染物的技术特点,经济实用性,指明了超临界水氧化法作为一种有效的有机污染物处理方法,在化工环保等领域将具有广阔的应用前景。 相似文献
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Supercritical water oxidation of landfill leachate 总被引:1,自引:0,他引:1
Wang S Guo Y Chen C Zhang J Gong Y Wang Y 《Waste management (New York, N.Y.)》2011,31(9-10):2027-2035
In this paper, ammonia as an important ingredient in landfill leachate was mainly studied. Based on Peng-Robinson formulations and Gibbs free energy minimization method, the estimation of equilibrium composition and thermodynamic analysis for supercritical water oxidation of ammonia (SCWO) was made. As equilibrium is reached, ammonia could be totally oxidized in SCW. N(2) is the main product, and the formation of NO(2) and NO could be neglected. The investigation on SCWO of landfill leachate was conducted in a batch reactor at temperature of 380-500 °C, reaction time of 50-300s and pressure of 25 MPa. The effect of reaction parameters such as oxidant equivalent ratio, reaction time and temperature were investigated. The results showed that COD and NH(3) conversion improved as temperature, reaction time and oxygen excess increased. Compared to organics, NH(3) is a refractory compound in supercritical water. The conversion of COD and NH(3) were higher in the presence of MnO(2) than that without catalyst. The interaction between reaction temperature and time was analyzed by using response surface method (RSM) and the results showed that its influence on the NH(3) conversion was relatively insignificant in the case without catalyst. A global power-law rate expression was regressed from experimental data to estimate the reaction rate of NH(3). The activation energy with and without catalyst for NH(3) oxidation were 107.07 ± 8.57 kJ/mol and 83.22 ± 15.62 kJ/mol, respectively. 相似文献
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采用催化超临界水氧化技术处理焦化废水.实验结果表明:升高反应温度、增加反应压力、延长反应时间可提高废水中氨氮去除率;在反应时间为60 s、反应压力为30 MPa、反应温度为460℃的最佳实验条件下,未加入催化剂时的氨氮去除率为53.7%,加入催化剂后,氨氮去除率大幅提高,以MnO2为催化剂时氨氮去除率为86.9%,以CuSO4为催化剂时氨氮去除率为92.4%. 相似文献