Pilot Test Study on Treatment of Fracturing Fluid by Three-Dimensional Electrocatalytic Oxidation Process
Author of the article:Xu Yadi1 , Jin Yan2 , Chen Liang3 , Liu Haiyan3 , Zhang Mingke4
Author's Workplace：China Petroleum Engineering & Construction Corp. Southwest Company , ChengDu , Sichuan , 610000 , China; 2. East China University of Science and Technology National Engineering Research Center for Integrated Utilization of Salt Lake Resources , Shanghai , 200000 , China; 3. Shunan Gas Field, Southwest Oil & Gas Field , Chengdu , Sichuan , 610000 , China; 4. College of Foreign Languages, Chengdu University of Information Technology , Chengdu, Sichuan , 610000 , China.
Key Words：Fracturing fluid; Three-dimensional electrode; Electrocatalytic oxidation
Abstract：
Fracturing
fluid is characterized by high COD, high TDS and strong toxicity. It is a kind
of industrial wastewater that is difficult to biodegrade. For the
characteristics of this type of wastewater, the three-dimensional
electrocatalytic oxidation device is used to study the effect of hydraulic
retention time, initial pH, oxidant concentration and aeration on the removal
of COD and ammonia nitrogen. It can be seen from the experimental data that
when the hydraulic retention time of the device is among 1 and 3 h, the
influent water quality is weakly acidic, the oxidant concentration in the
filler does not exceed 300 mg/L, and the aeration amount is in the range of 0.5
to 3 L/min, the concentrations of COD and ammonia nitrogen,total hardnesswere reduced to 211 mg/L, 153.33 mg/L and 230 mg/L. The
results show that the three-dimensional electrocatalytic oxidation device can
treat the fracturing fluid effectively.