含聚压裂返排废水的电絮凝处理实验研究  

Study on treating polymer-containing fracturing flow-back wastewater by electric-flocculation method

作　　者：郭书雅 刘倩 尹先清[1] GUO Shu-ya;LIU Qian;YIN Xian-qing(State Key Laboratory of Petroleum Pollution Control(Yangtze University),College of Chemical and Environmental Engineering,Yangtze University,Jingzhou 434023,China;College of Biological and Chemical Engineering,Jingzhou Institute of Technology,Jingzhou 434023,China)

机构地区：[1]石油石化污染物控制与处理国家重点实验室(长江大学),长江大学化学与环境工程学院,湖北荆州434023 [2]荆州职业技术学院生物化工学院,湖北荆州434023

出　　处：《应用化工》2020年第10期2483-2486,2492,共5页Applied Chemical Industry

基　　金：“十三·五”国家科技重大专项项目(2016ZX05025-003)。

摘　　要：采用电絮凝方法处理返排废水,在絮凝作用、氧化还原作用及微气浮作用下,实现废水快速脱稳澄清。采用Al极板,电流≥5.62 A,极板间距40~60 mm,动态处理废水40 min后,水样变清澈透明,含油量≤0.16 mg/L,Zeta(ζ)电位降为-1.9231 mV,浊度≤17.4 NTU,色度18,悬浮物含量82.34 mg/L,可实现压裂废水回用的目标;输出电流提高到20 A时,处理时间8 min,水质浊度即可降到≤12.0 NTU;处理后废水中大分子有机物被降解,絮体残渣以Fe2O3和Al2O3为主。Electric-flocculation method is adopted to treat flow-back wastewater,under the coordination of three functions of flocculation,redox and air flotation,the wastewater was quickly destabilized and clarified.Using Al plate,the output current of 4~6 A,the plate spacing of 40~60 mm,dynamic treatment of the wastewater 40 min,the wastewater became clear and transparent:oil≤0.16 mg/L,Zeta potential drop to-1.9231 mV,turbidity≤17.4 NTU,color degree 18,suspended solids≤82.34 mg/L,meets the standard of reusing the fracturing wastewater;output current increased to 20 A,the processing time is about 8 min,water turbidity≤12.0 NTU;The macromolecular organic matter in the wastewater was degraded after treatment,and the floc residue was mainly Fe2O3 and Al2O3.

关 键 词：压裂返排废水 ZETA电位 电絮凝 浊度 

分 类 号：TQ151[化学工程—电化学工业] TE991[石油与天然气工程—石油机械设备]