微电解-Fenton组合工艺预处理油田压裂废水  

Pretreatment of oilfield fracturing wastewater by microelectrolysis method combined with Fenton reagent

作　　者：王顺武[1] 李子旺[1] 赵晓非[1] 杨明全[1] 张晓阳[1] 

机构地区：[1]东北石油大学化学化工学院石油与天然气化工省重点实验室,黑龙江大庆163318

出　　处：《能源化工》2016年第3期43-46,共4页Energy Chemical Industry

基　　金：黑龙江省教育厅科学技术研究项目(12531061)

摘　　要：利用微电解-Fenton组合工艺对油田压裂废水展开预处理研究,以COD去除率为考察指标,单独工艺正交试验结果表明:微电解的最优反应条件为Fe/C摩尔比2∶3、铁碳投加量50 g/L、反应时间60 min、pH值3;Fenton反应的最优条件为p H值3、反应时间90 min、H_2O_2加量12 m L/L、H_2O_2/Fe^(2+)摩尔比30。在最佳条件下,微电解和Fenton反应的COD去除率分别可达56.87%和45.61%,废水COD值由3 715 mg/L降至867.9 mg/L,总去除率达到76.54%。出水水质满足油田现场循环回用的标准。The wastewater from oilfield fracturing process is pretreated by the microelectrolysis combined with Fenton reagent. Orthogonal test experiments are employed to investigate the influence factors of pretreatment on COD removal. The results indicate that when p H value of influent is 3,reaction time is 60 min,iron / charcoal molar ratio is 2 ∶3 and iron / charcoal dosage is 50 g / L in microelectrolysis,the COD removal can reach up to 56. 87%,while in Fenton process,it can reach up to 45. 61% at p H value of 4,reaction time of 90 min,H_2O_2 dosage of 12 m L / L and H_2O_2/ Fe^（2＋） molar ratio of 30. The COD of fracturing wastewater is dropped from initial3 715 mg / L to 867. 9 mg / L under the optimum conditions with a total COD removal rate of 76. 54%,and the quality of effluent water can meet the standards of oilfield circulation recycling.

关 键 词：微电解 FENTON反应 压裂废水 预处理 

分 类 号：X741[环境科学与工程—环境工程]