粉煤灰在废钻井液固化中的应用

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。

The Application of Fly Ash In The Solidifying Waste Drilling Fluid

The main components of waste drilling fluid are hydrocarbons,salts,polymers,some metallic ions and impurity of barite and they are bad for the environment.In order to alleviate the environment's pollution and achieve optimization,we should look for a good method between economic and environment.This paper mainly presents the waste drilling fluid's solidified management that using fly ash compound material.The system use fly ash and cement as main curing agent and chemical additives as assist agent.The measure shows that the strength of solidified waste is improved,curing time is shorted and leaching fluid toxicity of solidified waste is controlled within the index.The soil corrosion and leaching degree of metallic ions and organic matters in the waste drilling fluid are also lightened,the damage to the environment is lighten accordingly.With easy refilling for plowland and low cost of the system,a good economic benefit has been obtained.