Filth adhering to metal pipes can be cleaned by shock wave generated by electrical discharge under water. The mechanism of shock wave effect of electrical discharge under water on filth cleaning is analyzed by buildin...Filth adhering to metal pipes can be cleaned by shock wave generated by electrical discharge under water. The mechanism of shock wave effect of electrical discharge under water on filth cleaning is analyzed by building a mechanical model. A metal pipe coated with cement to simulate real filth is cleaned by using electrical discharge under water. The experimental results confirm the mechanical analysis and also show the technology of electrical discharge under water is an very effective method for filth cleaning.展开更多
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Fe2+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...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Fe2+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2.00 g界面污物的最佳实验条件为:pH=1,10 mL 30%H2O2溶液,10 mL 0.1 mol/L Fe2+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.展开更多
文摘Filth adhering to metal pipes can be cleaned by shock wave generated by electrical discharge under water. The mechanism of shock wave effect of electrical discharge under water on filth cleaning is analyzed by building a mechanical model. A metal pipe coated with cement to simulate real filth is cleaned by using electrical discharge under water. The experimental results confirm the mechanical analysis and also show the technology of electrical discharge under water is an very effective method for filth cleaning.
文摘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Fe2+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2.00 g界面污物的最佳实验条件为:pH=1,10 mL 30%H2O2溶液,10 mL 0.1 mol/L Fe2+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.