非均相催化湿式氧化技术处理4-氯酚

研究了以负载于活性炭上的三氯化铁为催化剂，以氧气为氧化剂的非均相催化湿式氧化体系处理4-氯酚废水工艺.通过正交实验方法，从反应温度、时间、压力、催化剂用量等方面初步考察了4-氯酚在该体系中的氧化效果.在150 ℃，0.5MPa氧气，催化剂用量为30%(摩尔分数)，反应4 h，对降解过程所得的中间产物和终产物进行了分析.结果表明，该体系对4-氯酚的去除率能够达到67%，COD_Cr降低了39%.并且初步探索了将亚硝酸钠加入到三氯化铁/活性炭催化氧化体系后形成的共催化氧化体系中4-氯酚的降解效果，发现亚硝酸钠的加入对4-氯酚的去除有很大的促进作用. 

Studies of Catalytic Wet Air Oxidation for 4-Cholrophenol Wastewater Catalyzed by Ferric Ion Supported on Activated Carbon

The FeCl₃ supported on activated carbon was used as catalyst and oxygen as oxidant to form a heterogeneous catalytic wet oxidative system for the treatment of4-cholrophenol wastewater. By orthogonal experiments, the oxidation effect of 4-cholrophenol in the system was preliminarily investigated from the aspects oftemperature, oxygen pressure, reactive time and amount of FeCl₃/C. With 30%FeCl₃/C, under 0.5 MPa of O₂ and at 150 ℃, the intermediate products and final products in the degradation process were analyzed. The results showed that 67% 4-chlorophenol was destroyed with 39% COD_Cr reduction after 4 h. It was found that the introduction of NaNO₂ as the cocatalyst in the oxidative degradation systems brought about effective improvement on overall catalytic activity for the removal of 4-chlorophenol.