Mechanism of electrosorption recycled waste water-based drilling fluid

被引：0
|
作者：
Xie S. [1 ,2 ]
Ren W. [1 ,2 ]
Li X. [1 ,2 ]
Tang C. [3 ]
Tong K. [1 ,2 ]
Sun J. [1 ,2 ]
Zhang M. [1 ,2 ]
Liu X. [1 ,2 ]
机构：
[1] State Key Laboratory of Petroleum Pollution Control, Beijing
[2] CNPC Research Institute of Safety and Environmental Technology, Beijing
[3] Chongqing Water Conservancy & Electric Power Vocational and Technical College, Chongqing
来源：
Natural Gas Industry | 2019年 / 39卷 / 12期
关键词：
Electrolysis reaction; Electrosorption; Mechanism; Particle size; Regeneration; Selectivity; Solid particle; Viscosity reduction; Waste water-based drilling fluid;
D O I：
10.3787/j.issn.1000-0976.2019.12.018
中图分类号：
学科分类号：
摘要：
Electrosorption has a selective removal effect on the tiny inferior solid phase in the waste water-based drilling fluid, thus the performance and the reuse rate of drilling fluids after treatment can be effectively improved. The experimental materials were characterized using laser particle size analyzer, environmental scanning electron microscope, specific surface and porosity analyzer and X-ray diffractometer, together with the features of waste drilling fluids, laboratory studies were conducted on the main force of solid particle adsorption, adsorption range and selectivity of solid particles by electrosorption, adsorption effect of surface charge on electrode plate. Solid phase particle adsorption mainly relies on the electric field force while the effect of the surface properties of the plate material itself was limited on the adsorption of solid phase particles in waste drilling fluids. When the plate material was in the waste drilling fluids, the surface naturally carrying with a negative charge did not affect the treatment effect of electrosorption. Electrosorption had a good adsorption effect on such drill cuttings with particle size less than 10 Μm in waste drilling fluids, but not on those solid particles less than 0.1 Μm. No difference was observed in mineral types and components of the solid-phase particles separated either from the pre-treatment or from the electrosorption treatment of the waste drilling fluids, which proved that electrosorption had no selectivity for the type of solid particles.
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页码：139 / 145
页数：6
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