Mn-Al_2O_3催化臭氧氧化处理工业废水试验研究
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摘要
采用浸渍法制备了Mn-Al_2O_3催化剂,考察了催化剂的锰负载量、稳定性等影响因素,以及Mn-Al_2O_3催化臭氧氧化深度处理实际化工、制药和印染废水的效果。试验结果表明:5%-Mn-Al_2O_3催化剂对工业废水COD_(Cr)的去除效果以及重复性均较好。5%-Mn-Al_2O_3催化氧化化工、制药和印染废水的最佳臭氧反应时间分别为10、 20、 30 min,此时COD_(Cr)去除率分别为37.12%、 30.53%和64%,比单独的臭氧氧化分别提高了31.0%、15.4%和31.7%。
Using dipping method to prepare Mn-Al_2O_3 catalyst, the manganese capacity, stability and some other factors that influencing the catalyst's performance were investigated, besides, the advanced treatment effect of actual wastewater from chemical, pharmaceutical, printing and dyeing industry by Mn-Al_2O_3 catalytic oxidation was also studied. The results showed that: 5%-Mn-Al_2O_3 catalyst has the best removal effect on COD_(Cr) in industrial wastewater, and the repeatability of it was also better. The optimal ozone reaction time of wastewater from chemical, pharmaceutical, printing and dyeing industry by 5%-Mn-Al_2O_3 catalytic oxidation were 10, 20 and 30 min respectively, the removal rates were 37.12%, 30.53% and 64% respectively, which were higher than that using pure ozone by 31.0%, 15.4% and 31.7% respectively.
Using dipping method to prepare Mn-Al_2O_3 catalyst, the manganese capacity, stability and some other factors that influencing the catalyst's performance were investigated, besides, the advanced treatment effect of actual wastewater from chemical, pharmaceutical, printing and dyeing industry by Mn-Al_2O_3 catalytic oxidation was also studied. The results showed that: 5%-Mn-Al_2O_3 catalyst has the best removal effect on COD_(Cr) in industrial wastewater, and the repeatability of it was also better. The optimal ozone reaction time of wastewater from chemical, pharmaceutical, printing and dyeing industry by 5%-Mn-Al_2O_3 catalytic oxidation were 10, 20 and 30 min respectively, the removal rates were 37.12%, 30.53% and 64% respectively, which were higher than that using pure ozone by 31.0%, 15.4% and 31.7% respectively.
引文
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[12]岳山,杨永哲,杨宏勃,等. CeO2-MgO/AC催化剂开发及臭氧催化氧化深度处理制药废水[J].水处理技术, 2017, 43(9):109-114.
[13]陆洪宇,马文成,张梁,等.臭氧催化氧化工艺深度处理印染废水[J].环境工程学报, 2013, 7(8):2873-2876.
[2]董俊明.臭氧催化氧化处理活性蓝染料废水及催化剂的研究[J].环境工程学报, 2008, 2(11):1524-1528.
[3]范举红,俞大海,万梅,等.臭氧组合工艺深度处理混合印染废水技术经济比较[J].工业用水与废水, 2016, 47(6):31-35.
[4]刘艳芳,张智理,姜国平,等.非均相催化臭氧氧化水中难降解有机物效率与机理研究进展[J].煤炭与化工, 2016, 39(9):29-34.
[5]李凤娟,宿辉,李小龙,等.高级氧化技术在难降解工业废水处理中的研究进展[J].环保科技, 2017, 2(23):55-57.
[6]李花,沈耀良.废水高级氧化技术现状与研究进展[J].水处理技术, 2011, 37(6):6-9.
[7]耿媛媛,侯永江,杜金梅,等.多相催化臭氧化技术中催化剂的研究进展[J].工业水处理,2011, 31(1):8-12.
[8]程晓东,禚青倩,余正齐,等.非均相催化臭氧化污水处理技术研究进展[J].工业用水与废水, 2017, 48(1):6-9.
[9]吴俊,罗丹,全学军.臭氧催化剂的制备及其应用研究进展[J].化工进展, 2017, 36(3):944-950.
[10]李长波,赵国峥,王飞.负载型臭氧氧化催化剂的研究进展[J].当代化工, 2014, 43(3):453-456.
[11]何帅明,莫立焕,徐俊,等.活性炭负载铈催化臭氧处理桉木纸浆废水[J].中国造纸, 2016, 35(3):1-6.
[12]岳山,杨永哲,杨宏勃,等. CeO2-MgO/AC催化剂开发及臭氧催化氧化深度处理制药废水[J].水处理技术, 2017, 43(9):109-114.
[13]陆洪宇,马文成,张梁,等.臭氧催化氧化工艺深度处理印染废水[J].环境工程学报, 2013, 7(8):2873-2876.