高岭土对氢氧化镁混凝去除活性橙染料效果的影响

doi:10.16085/j.issn.1000-6613.2017-0574

化工进展 ›› 2017, Vol. 36 ›› Issue (11): 4286-4292.DOI: 10.16085/j.issn.1000-6613.2017-0574

高岭土对氢氧化镁混凝去除活性橙染料效果的影响

李文朴, 卢静芳, 柳美乐, 赵建海

天津城建大学环境与市政工程学院, 天津市水质科学与技术重点实验室, 天津 300384

收稿日期:2017-04-05 修回日期:2017-05-15 出版日期:2017-11-05 发布日期:2017-11-05
通讯作者: 赵建海,教授,研究方向为水污染控制和资源化。
作者简介:李文朴(1978-),女,硕士,讲师,研究方向为水处理技术。E-mail:hitlwp@126.com。
基金资助:
天津市水质科学与技术重点实验室开放研究基金项目（TJKLAST-PT-2016-03）。

Effect of Kaolin on the removal of reactive orange by magnesium hydroxide coagulation process

LI Wenpu, LU Jingfang, LIU Meile, ZHAO Jianhai

Tianjin Key Laboratory of Aquatic Science and Technology, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China

Received:2017-04-05 Revised:2017-05-15 Online:2017-11-05 Published:2017-11-05

摘要/Abstract

摘要： 实际染料废水存在一定浊度，本文将高岭土和活性橙染料模拟配水混合，讨论不同镁盐混凝剂投加量的混凝效果和絮体特性；同时，讨论高岭土浓度对混凝的影响。研究结果表明：在镁盐投加量（以Mg²⁺计）为150mg/L时，混合高岭土的混合配水活性橙染料和浊度的去除效果好于未混合高岭土的配水，说明混凝过程中高岭土的存在能够对颗粒分离和活性染料去除起到显著提升作用；根据絮凝指数FI值和沉降后水样zeta电位的变化情况，可以得出镁盐混凝机理主要是网捕卷扫和电性中和共同作用；混凝絮体显微照片中絮体特征进一步证实了镁盐混凝剂对不同浊度高岭土-活性橙染料混合配水的混凝效果。实验得出高岭土-活性橙染料混合配水最佳镁投加量150mg/L，最佳高岭土浓度10mg/L。

关键词: 氢氧化镁, 活性染料废水, 高岭土, 混凝, 吸附

Abstract: According to certain turbidity in the real dye wastewater,Kaolin was added to reactive orange simulated water sample. Magnesium hydroxide coagulation performance and the floc properties were investigated under different magnesium dosages and Kaolin concentrations.The results showed that reactive orange removal efficiency was better in the presence of Kaolin when magnesium ions dosage was 150mg/L. Kaolin with the whole coagulation process plays a significant role in particles separation in water sample and enhances reactive dyes removal efficiency. Charge neutralization and precipitate enmeshment were proposed to be the main coagulation mechanisms according to the zeta potential and FI. Image analysis was used to predict the floc properties and demonstrated the coagulation performance of magnesium hydroxide on different turbidity Kaolin-reactive orange simulated water sample. In this experiment condition,the optimum dosages for magnesium ion and Kaolin were 150mg/L and 10mg/L,respectively.

Key words: magnesium hydroxide, reactive dyes wasterwater, Kaolin, coagulation, adsorption

中图分类号:

X506

李文朴, 卢静芳, 柳美乐, 赵建海. 高岭土对氢氧化镁混凝去除活性橙染料效果的影响[J]. 化工进展, 2017, 36(11): 4286-4292.

LI Wenpu, LU Jingfang, LIU Meile, ZHAO Jianhai. Effect of Kaolin on the removal of reactive orange by magnesium hydroxide coagulation process[J]. Chemical Industry and Engineering Progress, 2017, 36(11): 4286-4292.

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高岭土对氢氧化镁混凝去除活性橙染料效果的影响

Effect of Kaolin on the removal of reactive orange by magnesium hydroxide coagulation process

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