电絮凝-O_3联合工艺处理页岩气压裂采出水
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摘要
通过研究比较不同处理工艺对页岩气压裂采出水的效果,设计出电絮凝-O_3联合处理采出水的工艺。以化学需氧量(COD)、总悬浮物(TSS)为指标,讨论电絮凝-O_3联合工艺处理页岩气压裂采出水过程中pH、电流密度、电极间距、电解时间以及O_3通气量的影响。结果表明,当pH=8. 0、电流密度为1250A/m~2、极板间距为2cm、电解时间6min、O_3通气量为40L/h时,COD去除率为98. 3%,TSS的去除率为95. 9%,经过电絮凝-O_3联合处理后的采出水的色度、浊度、oil及NH_4-N等污染指标都达到了国家排放标准。
By studying and comparing the effects of different treatment processes on shale gas-fracturing produced water,the process of electrocoagulation-O_3 combined treatment of produced water was designed. Taking COD and TSS as indictor,the effects of p H,current density,electrode spacing,electrolysis time and O_3 aeration on the removal efficiency of COD and TSS are discussed. The experimental results showed that the most suitable conditions are as follows: pH is 8. 0,the current density is 1250 A/m~2,the distance between plates is 2 cm,the electrolysis time is 6 min and the O_3 ventilation is 40 L/h. Under these conditions,the COD and TSS removal rate of produced-water is 98. 3% and 95. 9% respectively. The color,turbidity,oil,and NH_4-N pollution of the produced water reach the national emission standards after combined treatment with Electrocoagulation-O_3.
By studying and comparing the effects of different treatment processes on shale gas-fracturing produced water,the process of electrocoagulation-O_3 combined treatment of produced water was designed. Taking COD and TSS as indictor,the effects of p H,current density,electrode spacing,electrolysis time and O_3 aeration on the removal efficiency of COD and TSS are discussed. The experimental results showed that the most suitable conditions are as follows: pH is 8. 0,the current density is 1250 A/m~2,the distance between plates is 2 cm,the electrolysis time is 6 min and the O_3 ventilation is 40 L/h. Under these conditions,the COD and TSS removal rate of produced-water is 98. 3% and 95. 9% respectively. The color,turbidity,oil,and NH_4-N pollution of the produced water reach the national emission standards after combined treatment with Electrocoagulation-O_3.
引文
[1]王兴睿,张虹,杨杰等.页岩气压裂返排液电絮凝处理试验研究//油气田地面工程技术交流大会.2015.
[2]王骏迪,屈撑囤,李珊等.广东化工,2014,41(15):116~117.
[3]王丹.环境工程,2016,(s1):424~428.
[4]D M Akob,I M Cozzarelli,D S Dunlap et al.Appl.Geochem.,2015,60(9):116~125.
[5]毕鹏禹,董慧茹,卢永康等.北京化工大学学报(自然科学版),2006,33(4):70~74.
[6]王永龙.南开大学博士学位论文,2009.
[7]V A K erma,R R Dash,P Bhunia.J.Environ.Manag.,2012,93(1):154~168.
[8]刘玉玲,陆君,马晓云等.环境工程学报,2014,8(9):3640~3644.
[9]B Merzouk,K Madani,A Sekki.Desalination,2010,250(2):573~577.
[10]陈斌,曾桂华.化工管理,2016(31):151~152.
[11]胡海,邱于兵,李强等.环境科学与技术,2012,35(2):179~183.
[12]刘阳,莫彩萍,程渊等.金属制品,2016,42(5):23~26.
[13]T Umran,A Kandemir,N Erginel et al.J.Environ.Manag.,2014,14(5):245~250.
[14]吉晓鹏.重庆三峡学院硕士学位论文,2017.
[15]董淑福.工业水处理,2013,33(4):58~60.
[2]王骏迪,屈撑囤,李珊等.广东化工,2014,41(15):116~117.
[3]王丹.环境工程,2016,(s1):424~428.
[4]D M Akob,I M Cozzarelli,D S Dunlap et al.Appl.Geochem.,2015,60(9):116~125.
[5]毕鹏禹,董慧茹,卢永康等.北京化工大学学报(自然科学版),2006,33(4):70~74.
[6]王永龙.南开大学博士学位论文,2009.
[7]V A K erma,R R Dash,P Bhunia.J.Environ.Manag.,2012,93(1):154~168.
[8]刘玉玲,陆君,马晓云等.环境工程学报,2014,8(9):3640~3644.
[9]B Merzouk,K Madani,A Sekki.Desalination,2010,250(2):573~577.
[10]陈斌,曾桂华.化工管理,2016(31):151~152.
[11]胡海,邱于兵,李强等.环境科学与技术,2012,35(2):179~183.
[12]刘阳,莫彩萍,程渊等.金属制品,2016,42(5):23~26.
[13]T Umran,A Kandemir,N Erginel et al.J.Environ.Manag.,2014,14(5):245~250.
[14]吉晓鹏.重庆三峡学院硕士学位论文,2017.
[15]董淑福.工业水处理,2013,33(4):58~60.