超重力环境下O3/Fenton法处理含硝基苯废水

doi:10.12034/j.issn.1009-606X.217344

过程工程学报 ›› 2018, Vol. 18 ›› Issue (4): 728-734.DOI: 10.12034/j.issn.1009-606X.217344

超重力环境下O₃/Fenton法处理含硝基苯废水

杨鹏飞，刘瑛，焦纬洲*，刘有智

中北大学超重力化工过程山西省重点实验室，山西省超重力化工工程技术研究中心，山西太原 030051

收稿日期:2017-09-21 修回日期:2017-12-07 出版日期:2018-08-22 发布日期:2018-08-15
通讯作者: 焦纬洲 jwz0306@126.com
基金资助:
国家自然科学基金青年项目;山西省优秀人才科技创新项目

Treatment of nitrobenzene-containing wastewater by O₃/Fenton in high gravity

Pengfei YANG, Ying LIU, Weizhou JIAO*, Youzhi LIU

Research Center of Shanxi Province for High Gravity Chemical Engineering and Technology, Shanxi Province Key Laboratory of
Higee-oriented Chemical Engineering, North University of China, Taiyuan, Shanxi 030051, China

Received:2017-09-21 Revised:2017-12-07 Online:2018-08-22 Published:2018-08-15
Contact: JIAO Wei-zhou jwz0306@126.com

摘要/Abstract

摘要： 在旋转填充床(RPB)中超重力环境下采用O3/Fenton法处理含硝基苯废水，考察了Fenton试剂投加次数、超重力因子β、液体流量、初始pH值、Fe2+投加量、H2O2与Fe2+摩尔比对硝基苯去除率的影响. 结果表明，在硝基苯浓度175 mg/L、反应温度25℃、气体流量75 L/h、臭氧浓度40 mg/L、分3次投加Fenton试剂、溶液初始pH值4.5、超重力因子β=80、液体流量140 L/h和Fe2+总投加量1 mmol/L、摩尔比H2O2:Fe2+=5、循环处理40 min的条件下，硝基苯去除率和化学需氧量(COD)去除率分别为99.6%和87.6%. 相近条件下，与RPB-Fenton法相比，硝基苯去除率和COD去除率分别提高了36.3%和4.5%，与RPB-O3法相比分别提高了7.2%和47.1%，与BR(鼓泡反应器)-O3/Fenton法相比分别提高了11.3%和47.8%.

关键词: 旋转填料床, O3/Fenton, 硝基苯废水, COD去除率

Abstract: A study on treatment of nitrobenzene-containing wastewater with O3/Fenton in high gravity was carried out in a rotating packed bed (RPB). The effects of Fenton reagent dosing times, high gravity factor β, liquid flow rate, initial pH, Fe2+ dosage, molar ratio of H2O2 to Fe2+ on the removal rate of nitrobenzene were studied. The results showed that the removal rate of nitrobenzene and chemical oxygen demand (COD) reached 99.6% and 87.6%, respectively under the following reaction conditions: nitrobenzene concentration of 175 mg/L, reaction temperature of 25℃, ozonemass concentration of 40 mg/L, gas flow rate of 75 L/h, Fenton reagent dosing of 3 times, initial pH of 4.5, high gravity factor of 80, liquid flow rate of 140 L/h, Fe2+ dosage of 1 mmol/L, molar ratio of H2O2 to Fe2+ of 5, and reaction time of 40 min. Under the similar experimental conditions, the removal rate of nitrobenzene and COD increased by 36.3% and 6.5% compared with RPB-Fenton, increased by 7.2% and 47.1% compared with RPB-O3, increased by 11.3% and 47.8% compared with BR (bubbling reactor)-O3/Fenton, respectively.

Key words: rotating packed bed, O3/Fenton, nitrobenzene wastewater, COD

杨鹏飞刘瑛焦纬洲刘有智. 超重力环境下O₃/Fenton法处理含硝基苯废水[J]. 过程工程学报, 2018, 18(4): 728-734.

Pengfei YANG Ying LIU Weizhou JIAO Youzhi LIU. Treatment of nitrobenzene-containing wastewater by O₃/Fenton in high gravity[J]. Chin. J. Process Eng., 2018, 18(4): 728-734.

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超重力环境下O₃/Fenton法处理含硝基苯废水

Treatment of nitrobenzene-containing wastewater by O₃/Fenton in high gravity

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