工业水处理 ›› 2020, Vol. 40 ›› Issue (3): 27-30. doi: 10.11894/iwt.2019-0274

• 试验研究 • 上一篇    下一篇

β-环糊精/膨润土处理高含量重金属废弃钻井液

董汶鑫1(),蒲晓林1,*(),翟玉芬1,尹启新2   

  1. 1. 西南石油大学石油与天然气工程学院, 四川成都 610500
    2. 西南石油大学化学化工学院, 四川成都 610500
  • 收稿日期:2019-12-18 出版日期:2020-03-20 发布日期:2020-03-20
  • 通讯作者: 蒲晓林 E-mail:511126a22pc.cdb@sina.cn;puxiaolin@vip.sina.com
  • 作者简介:董汶鑫(1994-),博士。电话:18010604207, E-mail:511126a22pc.cdb@sina.cn
  • 基金资助:
    “十三五”国家重大专项(2011ZX05020-004);国家重点基础研究发展计划(2013CB228003);国家自然科学基金青年科学基金项目(51804263);西南石油大学研究生科研创新基金(2019cxyb024)

The treatment of high-heavy metal ion-containing waste drilling fluid by β-cyclodextrin/bentonite

Wenxin Dong1(),Xiaolin Pu1,*(),Yufeng Zhai1,Qixin Yin2   

  1. 1. Petroleum Engineering School, Southwest Petroleum University, Chengdu 610500, China
    2. School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu 610500, China
  • Received:2019-12-18 Online:2020-03-20 Published:2020-03-20
  • Contact: Xiaolin Pu E-mail:511126a22pc.cdb@sina.cn;puxiaolin@vip.sina.com
  • Supported by:
    “十三五”国家重大专项(2011ZX05020-004);国家重点基础研究发展计划(2013CB228003);国家自然科学基金青年科学基金项目(51804263);西南石油大学研究生科研创新基金(2019cxyb024)

摘要:

针对重金属含量严重超标的废弃钻井液,提出以β-环糊精与膨润土联合制备高效重金属吸附剂。β-环糊精/膨润土对Cd(Ⅱ)与Cr(Ⅲ)的吸附行为高度符合D-R方程,符合准二级动力学模型,吸附过程受化学及离子交换吸附控制。室温(25℃)下β-环糊精/膨润土投加质量浓度为9 g/L,处理结果可达《地表水环境质量标准》(GB 3838— 2002)Ⅱ类水体标准,吸附平衡时间为9 min。

关键词: 废弃钻井液, β-环糊精, 膨润土, 吸附, 重金属

Abstract:

The highly effective heavy metal adsorbent was prepared with β-cyclodextrin and bentonite to treat the heavy metal-containing waste drilling fluid. The adsorption behavior of β-cyclodextrin/bentonite for Cd(Ⅱ) and Cr(Ⅲ) is highly fitted to D-R equation, and the adsorption kinetics is in accordance with the quasi-second-order kinetic model. The adsorption process is controlled by chemical and ion exchange adsorption. When the dosage of β-cyclodextrin/bentonite is 9 g/L at room temperature(25℃), the heavy metal content of waste drilling fluid can meet the limit of Environmental Quality Standard for Surface Water(GB 3838-2002) and the adsorption equilibrium time is 9 min.

Key words: waste drilling fluid, β-cyclodextrin, bentonite, adsorption, heavy metal

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