钻井废水回用的评价

THE EVALUATION OF DRILLING WASTEWATER REUNE

本文就四川气田钻井废水的回用进行经济和环境效益评价,认为废水回用有一定的经济效益,但环境效益差,其原因是出水COD值达标率不够高,因而限制了回用率的进一步提高。为提高废水的回用率,必须寻找新的和高效的混凝剂改善COD值的脱除效果,同时进行污泥处理。

This paper evaluates the economical aad envirobmental benefit on drilling waste watre reuse on the gasfield in Sichuan. It is considers that drilling wastewater resr., has some economical benefit, but environmental benefit is very lom. Because the rate of COD index to meet enter prise standard for gasfield wastewater treatment is not enough, raising reuse of wastewater is further limited. To increase reusable effect of the wastewater, it is neces sary that a new and excellent floculant is developed to improve the removal efficiency of COD, and the sludge is disposed.