吸附/催化氧化协同技术脱除水体中氨氮的研究  

Research on the removal of ammonium-nitrogen from water body by adsorption/catalysis oxidation synergistic technology

作　　者：张仁江[1] 高建峰[2] 彭涛[2] 

机构地区：[1]南开大学滨海学院,天津300272 [2]中北大学理学院化学系,山西太原030051

出　　处：《工业水处理》2012年第11期75-77,共3页Industrial Water Treatment

基　　金：太原人才扶持明星项目(11014925)

摘　　要：首先通过试验考察了活性炭、合成沸石、Al2O3、自制沸石分子筛4种吸附剂对排放废水中NH4+-N的吸附效果。结果表明,自制沸石分子筛对NH4+-N的吸附效果最好。以自制沸石分子筛为载体,负载质量分数为10%的Bi2O3制备Bi2O3-沸石分子筛。在常温、反应时间为1.5 h、pH=7、H2O2存在的条件下,Bi2O3-沸石分子筛对废水中的NH4+-N去除率达到87.4%,并且在重复使用6次后,Bi2O3-沸石分子筛对NH4+-N的去除率仍可达70%以上。The effects of the four adsorbents ： activated carbon, artificial zeolite, Al2O3 and home-made zeolite molec- ular sieve on the adsorption of NH4＋-N from wastewater are investigated. The results show that home-made zeiolite molecular sieve has the best adsorption rate. Using the home-made zeolite molecular sieve as carrier, the zeolite molecular sieve-Bi2O3 has been prepared with the Bi=O3 whose loading mass fraction is 10%. Under the following conditions：at room temperature,pH=7, reaction time 1.5 h and in the presence of H2O2, the NH4＋-N removing rate from wastewater by using the zeolite molecular sieve-Bi203 reaches 87.4%. The zeolite molecular sieve-Bi2O3 can be used repeatedly. Furthermore,after the catalyst has been used 6 times,its NH4＋-N removing rate still can reach above 70%.

关 键 词：分子筛 吸附 催化氧化 

分 类 号：X703.1[环境科学与工程—环境工程]