过氧化氢湿法氧化模拟有机污物的研究

用过氧化氢湿法氧化处理有机污物，研究了过氧化氢的投加量和投加方式，催化剂以及pH值等对反应的影响。结果表明，为提高H2O2的利用率，H2O2应以间歇式投加，选取Fe^2 作催化剂，体系pH值为1～2。为保证反应快速启动和平稳进行，反应时将催化剂总投加量的1／3提前与要分解氧化的物质混合一段时间，剩余2／3在反应进行中连续定量滴加，并于反应结束前半小时投加完毕。正交试验表明，分解2．00g界面污物的最佳实验条件为：pII-1．10mL30％H2O2溶液，10mL 0．1mol／L Fe^2 溶液。反应结束时，反应釜底部的白色残余物经红外分析和元素分析表明主要是磷酸盐。H2O2湿法氧化能够有效分解TBP／OK，HDBP／OK溶液和界面物。

Wet Oxidation of Spent TBP/OK and Interphase Crud by H2O2

Wet oxidation of simulated organic filth by hydrogen peroxide catalysed by Fe~(2+) is investigated. The factors influencing reactions such as H_2O_2 dosage, catalyst, pH-value and so on are studied. With regard to reagent addition manner, intermittent addition is advised for the utilization of H_2O_2, pH value of the system is 1~2. To assure fast startup and going along placidly of the reaction, a third of the catalyst is mixed with the filth before the oxidation, the other two thirds are added in the reacting solution continuously during the reaction process and finished the addition half an hour before the end of the reaction. TBP/OK, HDBP/OK and interphase crud can be decomposed effectively by (H_2O_2). Finally, trivariant normal experiments are employed for determination of the optimal conditions. When the dosage of cruds is 2.00 g, the optimal conditions are pH=1, (10 mL )H_2O_2, (10 mL) (0.1mol/L) Fe~(2+). The element analysis and infrared spectroscopic analysis shows that the main component of the (residual) from the reaction is phosphate.