磁分离废压裂液处理技术现场试验

Field Test on Treatment of Waste Fracturing Fluid with Magnetic Separation

近年来常规压裂和大规模压裂井数日益增多,废液量逐年增加,大量的废压裂液得不到及时处理。利用磁分离技术,研制出一种高效节能、节约成本的废压裂液回收可移动式橇装处理装置,该装置主要由配药罐、反应罐和磁分离主机三部分组成。利用磁分离技术能够使废压裂液快速絮凝沉淀、分离。处理后的废液含油浓度平均为12.27 mg/L,悬浮固体浓度平均为29.3 mg/L,经污泥浓缩机进一步浓缩后污泥含水率为65.3%~70.6%。

According to the number of conventional hydraulic fracturing and large- scale fracturing wells has been increasing in recent years,waste liquid quantity is increasing year by year, large amounts of waste fracturing fluid to promptly solve the problem, using magnetic separation technology,a high efficiency and energy saving,cost saving, movable waste fracturing fluid recovery skid mounted device is researched and applied. The device is mainly composed of three parts∶the dispensing tank,a reaction tank and a magnetic separation machine etc., the magnetic separation technology to rapid flocculation and sedimentation,rapid separation.The oil content of the treated wastewater average in 12.27 mg/L,suspended solid content average in 29.3 mg/L, the sludge thickener further concentrated sludge moisture rate 65.3%-70.6%,can meet standard requirements of oil production.