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《Environmental Protection and Technology》 2017-04
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Application of grapefruit peels as flocculant in treating the drilling fluid

Zhang Jie;Chang Xiaofeng;Chen Gang;Zhang Li;Si Jun;Zhang Jianjia;College of Chemistry and Chemical Engineering,Xi'an Petroleum University;Beijing Queentec Environmental Protection Science-tech Co.,Ltd.;  
Grapefruit peel contains phenolic compounds including hydroxyl,carboxyl,carbonyl and other active functional groups,shows certain dispersion,adhesion,chelating and other actions and can be used as a flocculant in the treatment of waste drilling fluid. In order to reduce the pollution load of the waste drilling fluid to the environment,the treated powder particles of grapefruit peel were applied to the flocculation process of the drilling fluid. The indoor simulation test was conducted to investigate the effects of the dosage of the grapefruit peel powder,temperature and p H range,stirring rate and stirring time on the flocculation treatment of drilling fluid,and the suitable conditions for treating the waste drilling fluid were screened. The results also showed that the flocculation effect of the combination of grapefruit peel powder and the inorganic flocculant in the drilling fluid was enhanced. When the stirring rate is 400 r/min,the stirring time is 5 min,the temperature is 40℃,and the dosage of the grapefruit peel is 3%,the flocculation effect is the best.
【Fund】: 国家自然科学基金项目(50874092):环保型聚糖-木质素钻井液体系的应用基础研究
【CateGory Index】: X741
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