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废钻井液的主要成分是烃类、盐类、各种聚合物、某些金属离子和重晶石中的杂质,对环境造成极大危害。为了减轻环境污染而应寻找经济和环境上都能够接受的处理方式,实现最优化废物处理体系。本文主要介绍粉煤灰复合材料在废钻井液中的固化处理方法。粉煤灰复合材料是选用粉煤灰和水泥作为主要固化剂,辅以化学添加剂的固化体系。此体系固化物强度高,硬化速度快,固化物的浸出液毒性在控制指标内;该方法能显著降低废钻井液中金属离子和有机质对土壤的侵蚀和土壤沥滤程度,从而减少对环境的影响和危害,回填还耕也比较容易,并且成本低,具有较好的社会效益和经济效益。
Waste drilling fluid is the main component of hydrocarbons, salts, various polymers, some metal ions and barite impurities, the environment caused great harm. In order to reduce environmental pollution, it is necessary to find economically and environmentally acceptable treatments to optimize the waste treatment system. This article describes the fly ash composite materials in the waste drilling fluid curing method. Fly ash composite material is the choice of fly ash and cement as the main curing agent, supplemented by chemical additives curing system. The system has the advantages of high curing strength and fast curing speed, and the toxicity of the solidified leachate within the control indexes. The method can remarkably reduce the environmental impact caused by soil erosion and leaching of metal ions and organic matter in the waste drilling fluid And hazards, backfilling and reprovisioning is relatively easy, and low cost, with good social and economic benefits.