E3S Web Conf.
Volume 78, 20192018 International Seminar on Food Safety and Environmental Engineering (FSEE 2018)
|Number of page(s)||5|
|Section||Environmental Biotechnology and Environmental Equipment|
|Published online||15 January 2019|
Curing Experiments Researching on Waste Oil-base Shale Gas Drilling Mud
Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, PR China
2 College of Resource and Environmental Science, Chongqing University, Chongqing, 400044, PR China
3 College of Chemistry, Chemical and Environmental Engineering, Henan University of Technology, Zhengzhou, 450001, PR China
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Curing research on waste oil-base shale gas drilling mud was performed for optimal additions matching. Destabilizing experiments on waste drilling mud demonstrated that Aluminum potassium sulfate (KAl(SO4)2) played a best role of destabilizing effects when compared with FeCl3 and AlCl3 based on demulsification mechanism about oil-in-water type. Aluminum potassium sulfate emerged an impact influence on curing effects simultaneously when compared to sodium silicate, alumina, lime and complex Portland cement. Orthogonal test on curing waste drilling mud revealed that the optimal operation conditions of handling waste drilling mud was 4% aluminum potassium sulfate, 4% sodium silicate, 4% alumina, 4% lime and 16% complex Portland cement. Under this condition, unconfined compressive strength of the curing product was 1.80MPa, and lead leaching concentration cannot be detected after 7d maintenance. The curing mechanism was mainly the encapsulation of C3S and solid waste contaminated by mineral oil can be efficiency treated after breaking the interface of oil-in-water type.
© The Authors, published by EDP Sciences, 2019
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