摘要
采用浸渍法制备CeO_2-Mg O/活性炭催化剂,研究臭氧催化氧化(COP)和尾气利用-臭氧催化氧化(RO-COP)对制药废水中COD和NH_3-N的去除特征。结果表明,当进水COD及NH_3-N的质量浓度平均分别为252.8 mg/L和153.8 mg/L时,在适宜COP工艺条件下(臭氧投加量4.9 g/h、初始p H为11和催化剂投加量1.5 g/L),COD和NH_3-N去除率平均分别为94.31%和99.71%;COD和NH_3-N的反应动力学常数分别为2.11×10-2 min^(-1)和5.01×10^(-2) min^(-1)。在上述工况条件下,经RO-COP处理后,COD及NH_3-N平均去除率分别为96.3%和99.82%,1 m^3尾气中可回收臭氧量为4.21 g,回收率为75.39%。
The catalyst CeO2-MgO/AC was prepared by impregnation method. The COD and NH3-N removal characteristics in pharmaceutical wastewater by catalytic ozonation process （COP） and residual ozone-catalytic ozonation process （RO-COP） were researched. The results showed that, when the average mass concentration of COD and NH3-H of infiuent was 252.8 mg/L and 153.8 mg/L respectively, and under the optimal COP process conditions （ozone dosage, initial pH and catalyst dosage was 4.9 g/h, 11 and 1.5 g/L respectively）, the coD and NH3-N average removal rate was 94.31% and 99.71% respectively, and the reaction kinetic constant of COD and NH3-N were 2.11×10-2 and 5.01×10-2 min-1. Under above mentioned working conditions, the average removal rate of COD and NH3-N was 96.3% and 99.82% after RO-COP treatment. 4.21 g O3 could be reuse in each 1 m3 off-gas and the recovery of residual ozone was 75.39%.
出处
《水处理技术》
CAS
CSCD
北大核心
2017年第9期109-114,共6页
Technology of Water Treatment
基金
国家水体污染控制与治理科技重大专项(2009ZX07212-002-004-003)
高等学校博士学科点专项科研基金(20116120110008)
