无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2024, Vol. 56 ›› Issue (4): 34-41.doi: 10.19964/j.issn.1006-4990.2023-0277

• 研究与开发 • 上一篇    下一篇

不同絮凝剂对钻井泥浆的处理效果及絮凝机理

杨宾1(), 李银月2, 董明坤2, 韩希萌2, 桂新2, 张发文2()   

  1. 1.河南省郑州生态环境监测中心,河南 郑州 450007
    2.河南农业大学林学院,河南 郑州 450002
  • 收稿日期:2023-05-19 出版日期:2024-04-10 发布日期:2024-04-18
  • 通讯作者: 张发文(1981— ),男,博士,副教授,硕士生导师,主要从事固体废物处理与资源化处理工作;E-mail:zhangfawen@henau.edu.cn
  • 作者简介:杨宾(1984— ),男,本科,工程师,主要从事环境监测与系统分析工作;E-mail:12639479@qq.com
  • 基金资助:
    国家自然科学基金项目(51008118);河南省高等学校重点科研项目(18B610001);河南省高校国家级大学生创新创业训练计划项目(202010466004);河南农业大学科技创新基金项目(KJCX2017A04)

Treatment effect and flocculation mechanism of abandoned drilling mud by different flocculants

YANG Bin1(), LI Yinyue2, DONG Mingkun2, HAN Ximeng2, GUI Xin2, ZHANG Fawen2()   

  1. 1.Zhengzhou Ecological Environment Monitoring Center, Zhengzhou 450007, China
    2.College of Forestry, Henan Agricultural University, Zhengzhou 450002, China
  • Received:2023-05-19 Published:2024-04-10 Online:2024-04-18

摘要:

为研究不同絮凝剂对钻井泥浆的絮凝效果,采用破胶絮凝的方法对含水率高、成分复杂的山西某煤层气废弃钻井泥浆进行处理,研究不同破胶絮凝剂和助凝剂种类及投加量等因素对废弃钻井泥浆处理效果的影响,并利用扫描电子显微镜(SEM)探究了破胶助凝的机理。结果表明:2 000 mg/L的硫酸铝破胶絮凝效果最优,10 mg/L的非离子聚丙烯酰胺(NPAM)与其协同处理效果最佳,处理后的液相色度、CODCr、悬浮物含量和泥饼含水率分别为20倍、61.98、32.50 mg/L、78.64%;硫酸铝的电中和作用可以和NPAM桥联网捕作用产生良好的协同效果,能够显著加快泥浆中颗粒物的絮凝沉降,增大絮体体积和疏松程度,从而降低液相污染物含量和泥饼含水率。研究结果可为废钻井泥浆的絮凝处理提供一定的参考和理论依据。

关键词: 废弃泥浆, 絮凝, 协同处理, 有机助凝剂

Abstract:

In order to reveal the flocculation effect of different flocculants on abandoned drilling mud,the method of breaking flocculation was used to treat the abandoned coalbed methane drilling mud with high water content and complex composition,which was taken from Shanxi Province.The effect of flocculant type,flocculant amount,and other factors on the flocculation performance of the abandoned drilling mud was analyzed.The flocculation mechanism was explored by scanning electron microscopy(SEM).The results showed that the dosage of aluminum sulfate with 2 000 mg/L had the best flocculation effect,and the dosage of non-ionic polyacrylamide(NPAM) with 10 mg/L had the best co-treatment effect.The liquid phase chromaticity,CODCr,suspended matter content and water content of mud cake after treatment were 20 times,61.98,32.50 mg/L and 78.64% respectively.The electric neutralization of aluminum sulfate could produce good synergistic effect with the bridge trapping of NPAM,which could significantly accelerate the flocculation settlement of particles in the mud,increasing the volume of volume of flocculation and the degree of porosity,so as to reduce the content of pollutants in liquid phase and the moisture content of mud cake.The results of this study could provide useful guidance and theoretical basis for the flocculation treatment of waste drilling mud.

Key words: waste mud, flocculation, collaborative processing, organic coagulant aid

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