钻井污水絮凝处理实验研究  

STUDY ON THE FLOCCULATION TREATMENT OF DRILLING SEWAGE

作　　者：肖遥[1] 王蓉莎[1] 李凡修[1] 马克纯 

机构地区：[1]江汉石油学院化工系

出　　处：《石油与天然气化工》2000年第6期323-326,共4页Chemical engineering of oil & gas

基　　金：中国石油天然气总公司"九五"攻关课题!(批准号 96 0 70 6 -3);湖北省自然科学基金项目!(批准号 97J118)的一部分

摘　　要：采用两次絮凝处理工艺对钻井污水进行了处理实验。探讨了絮凝剂种类及投加条件对处理效果的影响 ,并借助显微照相、ζ电位、扫描电镜等分析测试手段探索了絮凝机理。研究表明 :钻井污水经过两次絮凝处理可以使COD、悬浮物和色度等达到GB 8978- 1996标准要求 ;第一次处理絮凝机理以“吸附架桥”机理为主 ,第二次处理絮凝机理可用“电中和”In this paper two-step flocculation method for drilling sewage disposal was studied,and the effect of floccutants and its concentration on treatment efficiency was discussed.The experiment result showed that the contents of heavy metal salts,SS and organic matters (COD,oil) of the effluent resulted from two-step flocculation units were fitted to the standard of GB8978-1996.With the aid of some analytical methods such as microphotograph,ζ potential and SEM,the mechanism of the flocculation of wastewater was approached further.As a result,the flocculation mechanisms of the two disposal processes of drilling sewage were difference. Adsorption-bridging mechanism was the main process in the first step and charge neutralization mechanism was the main process in second step.

关 键 词：油气田 钻井污水处理 絮凝剂 絮凝机理 吸附架桥 

分 类 号：X74[环境科学与工程—环境工程]