电凝聚气浮技术处理采油废水的研究  

Oilfield wastewater treatment by electrocoagulation

作　　者：胡慧[1] 李志健[2] 迟金娟[1] 缪爱园[1] 

机构地区：[1]陕西科技大学资源与环境学院,西安710021 [2]陕西科技大学制浆造纸工程学院,西安710021

出　　处：《安徽农业大学学报》2011年第6期974-977,共4页Journal of Anhui Agricultural University

基　　金：陕西科技大学研究生创新基金资助

摘　　要：采用铝电极对陕北某油田采油废水进行电凝聚气浮处理试验。静态试验研究表明,电流密度和电解时间对处理效果有显著的影响。选择电流密度3.97 mA.cm-2、极板间距10 mm作为操作条件,对初始含油量为632 mg.L-1、pH为7.2的采油废水电凝聚气浮40 min后,去油率可达68.08%。动态试验研究表明,水力停留时间为40 min,电凝聚气浮槽电流密度为3.70 mA.cm-2,电解气浮槽电流密度为3.30 mA.cm-2,初始pH7.2,极板间距10 mm时,去油率达到85.7%,出水油含量92.7 mg.L-1。In this paper,the operating conditions of electrocoagulation（EC） for the treatment of oilfield wastewater were investigated.The static experimental results showed that current density and electrolysis time had a significant impact on the treatment.Current density 3.97 mA·cm-2,plate spacing 10 mm and pH 7.2 were selected as operating conditions,and after 40 min EC experiment,the oily wastewater,the initial oil content was 632 mg·L-1,had been well treated,and the oil removal rate could reach to 68.08%.The continuous experimental results showed that the oil removal rate could reach to 85.7%,and the oil concentration of effluent was 92.7 mg·L-1 under the operating conditions as follows： HRT（hydraulic retention time）40 min,current density of EC tank 3.70 mA·cm-2,current density of electro-flotation tank 3.30 mA·cm-2,initial pH 7.2,and plate spacing 10 mm.

关 键 词：电凝聚气浮技术 采油废水 去油率 

分 类 号：X703.1[环境科学与工程—环境工程]