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徐慧, 肖峰, 王东升. 不同高岭土体系混凝过程中絮体形态的变化[J]. 环境工程学报, 2015, 9(7): 3121-3126. doi: 10.12030/j.cjee.20150708
引用本文: 徐慧, 肖峰, 王东升. 不同高岭土体系混凝过程中絮体形态的变化[J]. 环境工程学报, 2015, 9(7): 3121-3126. doi: 10.12030/j.cjee.20150708
shu
Xu Hui, Xiao Feng, Wang Dongsheng. Changes in morphology of flocs formed in different kaolin systems[J]. Chinese Journal of Environmental Engineering, 2015, 9(7): 3121-3126. doi: 10.12030/j.cjee.20150708
Citation: Xu Hui, Xiao Feng, Wang Dongsheng. Changes in morphology of flocs formed in different kaolin systems[J]. Chinese Journal of Environmental Engineering, 2015, 9(7): 3121-3126. doi: 10.12030/j.cjee.20150708
shu

不同高岭土体系混凝过程中絮体形态的变化

  • 1.

    中国科学院生态环境研究中心环境水质学国家重点实验室, 北京 100085

  • 基金项目:

    国家自然科学基金杰出青年科学基金资助项目(NSFC(51025830))

    国家自然科学基金资助项目(NSFC(41201498))

  • 中图分类号: X703.1

Changes in morphology of flocs formed in different kaolin systems

  • 1.

    State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China

  • Fund Project:

  • 摘要: 针对2种高岭土体系进行了不同混凝条件下的混凝实验研究,结果表明,使用AlCl3做混凝剂时,微米级高岭土体系絮体粒径随着颗粒物浓度的增加呈现先增加后减小的趋势。当破碎强度为400 r/min时,恢复因子随颗粒物浓度呈现先下降后升高的趋势,在20 mg/L的颗粒物浓度时达到最低。在颗粒物浓度为10 mg/L时,纳米体系强度因子和恢复因子均小于微米体系。继续增加颗粒物浓度(20 mg/L或40 mg/L),纳米颗粒本身的团聚作用和吸附混凝剂之后的纳米颗粒所起的架桥作用使得在200 r/min破碎强度下强度因子和恢复因子升高。当投加相同投加量的高聚合态聚合氯化铝(Al30)作为混凝剂时,由于其具有较高的电中和能力,所以絮体平衡后的粒径与恢复因子较使用AlCl3时降低。
    Abstract: The coagulation performances in different kaolin systems were investigated,and the results indicated that when AlCl3 was used as coagulant,the floc size increased with increasing the concentration from 10 mg/L to 20 mg/L in micro kaolin system,and when the concentration was 40 mg/L,the floc size decreased.The recovery factor in larger breakage rate (400 r/min) condition reached the smallest at 20 mg/L in micro-system.The strength factor and recovery factor in nano system were smaller under smaller concentration (10 mg/L),but when the concentration increased to 20 mg/L or 40 mg/L,they increased at smaller breakage rate (200 r/min) due to the bridging effects of nano particles.When Al30 was used at the same dosage,the floc size after regrowth and recovery factor decreased due to larger charge neutralizing ability.
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出版历程
  • 收稿日期:  2014-06-20
  • 刊出日期:  2015-07-02
徐慧, 肖峰, 王东升. 不同高岭土体系混凝过程中絮体形态的变化[J]. 环境工程学报, 2015, 9(7): 3121-3126. doi: 10.12030/j.cjee.20150708
引用本文: 徐慧, 肖峰, 王东升. 不同高岭土体系混凝过程中絮体形态的变化[J]. 环境工程学报, 2015, 9(7): 3121-3126. doi: 10.12030/j.cjee.20150708
shu
Xu Hui, Xiao Feng, Wang Dongsheng. Changes in morphology of flocs formed in different kaolin systems[J]. Chinese Journal of Environmental Engineering, 2015, 9(7): 3121-3126. doi: 10.12030/j.cjee.20150708
Citation: Xu Hui, Xiao Feng, Wang Dongsheng. Changes in morphology of flocs formed in different kaolin systems[J]. Chinese Journal of Environmental Engineering, 2015, 9(7): 3121-3126. doi: 10.12030/j.cjee.20150708
shu

不同高岭土体系混凝过程中絮体形态的变化

  • 1. 中国科学院生态环境研究中心环境水质学国家重点实验室, 北京 100085
  • 收稿日期:  2014-06-20
基金项目:

国家自然科学基金杰出青年科学基金资助项目(NSFC(51025830))

国家自然科学基金资助项目(NSFC(41201498))

摘要: 针对2种高岭土体系进行了不同混凝条件下的混凝实验研究,结果表明,使用AlCl3做混凝剂时,微米级高岭土体系絮体粒径随着颗粒物浓度的增加呈现先增加后减小的趋势。当破碎强度为400 r/min时,恢复因子随颗粒物浓度呈现先下降后升高的趋势,在20 mg/L的颗粒物浓度时达到最低。在颗粒物浓度为10 mg/L时,纳米体系强度因子和恢复因子均小于微米体系。继续增加颗粒物浓度(20 mg/L或40 mg/L),纳米颗粒本身的团聚作用和吸附混凝剂之后的纳米颗粒所起的架桥作用使得在200 r/min破碎强度下强度因子和恢复因子升高。当投加相同投加量的高聚合态聚合氯化铝(Al30)作为混凝剂时,由于其具有较高的电中和能力,所以絮体平衡后的粒径与恢复因子较使用AlCl3时降低。

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