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聚合铁钛混凝剂对印染废水的处理

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石健, 万杨, 黄鑫, 石宝友, 耿建刚, 华平. 聚合铁钛混凝剂对印染废水的处理[J]. 环境工程学报, 2019, 13(5): 1021-1029. doi: 10.12030/j.cjee.201901137
引用本文: 石健, 万杨, 黄鑫, 石宝友, 耿建刚, 华平. 聚合铁钛混凝剂对印染废水的处理[J]. 环境工程学报, 2019, 13(5): 1021-1029. doi: 10.12030/j.cjee.201901137
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SHI Jian, WAN Yang, HUANG Xin, SHI Baoyou, GENG Jiangang, HUA Ping. Treating dyeing wastewater with a kind of polyferric titanium sulfate[J]. Chinese Journal of Environmental Engineering, 2019, 13(5): 1021-1029. doi: 10.12030/j.cjee.201901137
Citation: SHI Jian, WAN Yang, HUANG Xin, SHI Baoyou, GENG Jiangang, HUA Ping. Treating dyeing wastewater with a kind of polyferric titanium sulfate[J]. Chinese Journal of Environmental Engineering, 2019, 13(5): 1021-1029. doi: 10.12030/j.cjee.201901137
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聚合铁钛混凝剂对印染废水的处理

  • 1.

    南通大学分析测试中心，南通 226019

  • 2.

    南通大学纺织服装学院，南通 226019

  • 3.

    中国科学院生态环境研究中心，中国科学院饮用水科学与技术重点实验室，北京 100085

  • 4.

    中国科学院大学，北京 100049

  • 5.

    山东中科天泽净水材料有限公司，淄博 256406

  • 基金项目:

    国家自然科学基金资助项目21177067国家自然科学基金资助项目(21177067)

Treating dyeing wastewater with a kind of polyferric titanium sulfate

  • 1.

    Analysis & Testing Center, Nantong University, Nantong 226019, China

  • 2.

    School of Textile, Nantong University, Nantong 226019, China

  • 3.

    Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China

  • 4.

    University of Chinese Academy of Sciences, Beijing 100049, China

  • 5.

    Shandong Zhongke Tianze Water Purification Material Co.Ltd., Zibo 256406, China

  • Fund Project:

  • 摘要: 采用钛铁矿为主要原料，以硫酸溶出部分铁和钛，并调节Ti/Fe比、碱化度制备高效的新型含钛聚合硫酸铁混凝剂(T-PSF)，将其用于分散兰和活性黄2种模拟印染废水的脱色处理并研究其混凝去除机理。实验结果表明，在Ti/Fe为1∶6和碱化度为2.0时，制备出的T-PSF混凝效果最好。T-PSF对分散兰的去除率为94.3%，比FeCl3的去除率提高53.8%；对活性黄的去除率为34.0%，比FeCl3提高12.7%。T-PSF处理分散兰和活性黄的最佳投加量均为0.3 mmol·L-1，最佳水样初始pH分别为6和8。絮体粒径及结构分析结果表明，T-PSF处理分散兰过程中形成的絮体粒径较FeCl3大，处理活性黄过程中所形成的絮体粒径较FeCl3小，但絮体结构均比FeCl3更密实。结合T-PSF的表征、Zeta电位及絮体特性分析表明，在分散染料去除过程中，T-PSF产生的多羟基钛铁聚合物的电中和及吸附架桥起主要作用；对于活性染料的去除，主要机制为T-PSF水解产生的带正电的多羟基钛铁聚合物的吸附络合作用。
    Abstract: In this study, a new polyferric-titanium sulfate coagulant (T-PSF) was prepared through dissolving a part of iron and titanium from ilmenite with sulfuric acid and adjusting Ti/Fe ratio and basicity. The T-PSF was used to treat two kinds of simulated dye wastewater (disperse blue and reactive yellow), and its coagulation mechanisms were also discussed. The results showed that T-PSF had a good coagulation performance with the Ti/Fe ratio of 1∶6 and basicity of 2.0. The removal efficiencies of disperse blue and reactive yellow by T-PSF coagulation were 94.3% and 34.0%, which were 53.8% and 12.7% higher than those by FeCl3 coagulation, respectively. For disperse blue and reactive yellow removal, the optimal T-PSF dosages were 0.3 mmol·L-1 and the optimum pHs were 6 and 8, respectively. In compared with flocs during FeCl3 coagulating dyes, larger and more compact ones occurred during T-PSF coagulating disperse blue, while smaller and more compact one occurred during T-PSF coagulating reactive yellow. In combination with T-PSF characterization, Zeta potential and other properties of flocs, charge neutralization and bridging of polyhydroxy-ferrotitanium polymers through T-PSF hydrolysis were identified as playing a key role in disperse dyes removal, while the adsorption and complexation of positively charged polyhydroxy-ferrotitanium polymers through T-PSF hydrolysis were identified as playing a key role in reactive dyes removal.
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  • [1] KATHERESAN V, KANSEDO J, LAU S Y. Efficiency of various recent wastewater dye removal methods: A review[J]. Journal of Environmental Chemical Engineering, 2018, 6: 4676-4697.
    [2] 任南琪, 周显娇, 郭婉茜, 等. 染料废水处理技术研究进展[J]. 化工学报, 2013, 64(1): 84-94.
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    [9] 薛文文. 聚硫酸铁钛混凝剂(PFTS)的制备及其在饮用水处理中的应用[D]. 重庆: 重庆大学, 2015.
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  • 刊出日期:  2019-06-03

聚合铁钛混凝剂对印染废水的处理

  • 1. 南通大学分析测试中心，南通 226019
  • 2. 南通大学纺织服装学院，南通 226019
  • 3. 中国科学院生态环境研究中心，中国科学院饮用水科学与技术重点实验室，北京 100085
  • 4. 中国科学院大学，北京 100049
  • 5. 山东中科天泽净水材料有限公司，淄博 256406
基金项目:

国家自然科学基金资助项目21177067国家自然科学基金资助项目(21177067)

摘要: 采用钛铁矿为主要原料，以硫酸溶出部分铁和钛，并调节Ti/Fe比、碱化度制备高效的新型含钛聚合硫酸铁混凝剂(T-PSF)，将其用于分散兰和活性黄2种模拟印染废水的脱色处理并研究其混凝去除机理。实验结果表明，在Ti/Fe为1∶6和碱化度为2.0时，制备出的T-PSF混凝效果最好。T-PSF对分散兰的去除率为94.3%，比FeCl3的去除率提高53.8%；对活性黄的去除率为34.0%，比FeCl3提高12.7%。T-PSF处理分散兰和活性黄的最佳投加量均为0.3 mmol·L-1，最佳水样初始pH分别为6和8。絮体粒径及结构分析结果表明，T-PSF处理分散兰过程中形成的絮体粒径较FeCl3大，处理活性黄过程中所形成的絮体粒径较FeCl3小，但絮体结构均比FeCl3更密实。结合T-PSF的表征、Zeta电位及絮体特性分析表明，在分散染料去除过程中，T-PSF产生的多羟基钛铁聚合物的电中和及吸附架桥起主要作用；对于活性染料的去除，主要机制为T-PSF水解产生的带正电的多羟基钛铁聚合物的吸附络合作用。

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