摘要
在微波催化和热催化比较中,采用相同的加热功率,处理100mL质量浓度为1g/L的甲基橙,试验条件为1g催化剂,1mL质量分数为30%的H2O2,0.07gFeSO4·7H2O,加热18min,微波催化对甲基橙的COD去除率达到90.1%,而热催化对甲基橙的COD去除率只有73.5%,微波催化明显优于热催化。在微波催化和光催化比较中,在相似的实验条件下,微波催化对低浓度甲基橙加热3min,色度去除率达到近100%,而用光催化要30min才能使去除率达到100%,微波催化明显优于光催化。经过Fe-C预处理,再经过微波催化,染料、炼焦、炼油、餐饮废水处理后主要污染物指标COD达到国家二级排放标准。
In the comparison of microwave catalysis oxidation and thermo catalysis oxidation, the same heating power is used. 100 mL of methyl orange is treated, and its concentration is 1 g/L. The experimental conditions are as follows: catalyst 1 g; H2O2(30%) 1 mL;FeSO4·7H2O 0.07 g;heating time 18 min. The COD removal rate of methyl orange by microwave catalysis reaches 90.1%,while the COD removal rate of methyl orange by thermocatalysis is only 73.5%. Therefore,microwave catalysis is obviously better than thermocatalysis. In the comparison of microwave catalysis oxidation and photocatalysis oxidation, under similar experimental conditions, methyl orange with low concentration is heated for 3 min by microwave catalysis, the chromaticity removal rate is nearly 100%,while by photocatalysis it takes 30 min to make 100% of removal rate. Therefore,microwave catalysis is obviously better than photocatalysis. After being pretreated with Fe-C,and microwave catalysis, the COD of the wastewater from dyestuff, coke and refinery plants and restaurants reaches the second grade of National Discharge Standard.
出处
《工业水处理》
CAS
CSCD
2003年第8期36-38,共3页
Industrial Water Treatment
