Abstract: The catalyst MnO_x/ACF has been prepared by in situ reduction method,combining with VUV for the de-gradation of unsym-dimethyl hydrazine(UDMH) wastewater. The influences of the catalyst dosage,initial pH and ini-tial concentration on UDMH and COD degradation rate have been investigated. The results show that when the initial dosage of catalyst is 15 g/L,UDMH initial mass concentration 50 mg/L and initial pH 9.1,the degradation reaction is relatively rapid. The 10 min degradation rate of UDMH is 95%,and the 90 min degradation rate of COD can reach 90%. Through an 8 hour illumination regeneration,the activity of catalysts can basically be recovered,the application effect of the 3 time regenerated catalyst can reach more than 80% of that being used the first time.

Key words: MnO_x/ACF, vacuum ultraviolet (VUV), unsym-dimethyl hydrazine (UDMH), wastewater treatment

摘要： 采用原位还原法制备了催化剂MnO_x/ACF，并联用真空紫外光（VUV）降解偏二甲肼（UDMH）废水。考察了催化剂投加量、初始pH以及初始浓度对UDMH降解率以及COD降解率的影响。结果表明：当催化剂投加量为15 g/L，UDMH初始质量浓度为50 mg/L，初始pH为9.1时，降解反应较快，UDMH的10 min降解率就达95%，COD的90 min降解率可达90%。通过8 h光照再生，催化剂活性基本可以恢复，再生3次的催化剂使用效果可以达到初次使用的80%以上。

关键词: MnO_x/ACF, 真空紫外光, 偏二甲肼, 废水处理

CLC Number: 

• V511

• X703