在天然气勘探钻井过程中,产生大量的废水,此废水含有大量泥浆处理剂与搬土颗粒所形成的胶体悬浮体系,并含很高的COD值和很深的色度,如不经处理直接外排,会对环境及井场周围农田造成严重危害。目前,对于石油及天然气勘探钻井废水的处理,四川局所属井队普遍采用硫酸铝 During the exploration and drilling of natural gas, a large amount of wastewater is generated, which contains a large amount of colloidal suspension formed by the mud treatment agent and the earth moving particles and has a high COD value and a very deep color, such as untreated directly Pai will cause serious damage to the environment and farmland around the wellsite. At present, for the drilling of oil and gas exploration drilling wastewater, the Sichuan Bureau belongs to the general use of aluminum sulfate