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WU Min, HUANG Yinghao, YIN Hongbin, WANG Shuo, CHEN Yong, WANG Wenchong. Influences of typical inorganic flocculants on flocculation effects of dredging materials and quality of effluent water[J]. Chinese Journal of Geotechnical Engineering, 2023, 45(S1): 79-83. DOI: 10.11779/CJGE2023S10021
Citation: WU Min, HUANG Yinghao, YIN Hongbin, WANG Shuo, CHEN Yong, WANG Wenchong. Influences of typical inorganic flocculants on flocculation effects of dredging materials and quality of effluent water[J]. Chinese Journal of Geotechnical Engineering, 2023, 45(S1): 79-83. DOI: 10.11779/CJGE2023S10021

Influences of typical inorganic flocculants on flocculation effects of dredging materials and quality of effluent water

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  • Received Date: July 05, 2023
  • Available Online: November 23, 2023
  • In view of the problems such as slow siltation and solidification of natural bottom sludge in the landfill disposal of sludge yards, the chemical agents are often added in the project to speed up the process of sludge-water separation. The influences of five typical inorganic flocculants on the flocculation sedimentation effects of dredged materials with high water content and the quality of overlying water (turbidity) are studied through the measuring cylinder sedimentation tests. Among the five typical inorganic flocculants, CaCl2 and PAS (polyaluminum sulfate) have relatively good flocculation effects. On this basis, the influences of these two flocculants on the sedimentation laws of dredged sludge under different dosages are investigated. The test results show that with different contents of CaCl2 and PAS, the settlement amount, rate and stabilization time of the sludge after self-weight sedimentation and consolidation are different. The optimum contents of CaCl2 and PAS obtained in this study are 0.8% and 0.2%, respectively. Under the optimal dosage, the turbidity removal rate of the overlying water can reach about 84%. CaCl2 plays a role of flocculation through Ca2+ exchange and electrical neutralization; and PAS mainly plays a role of flocculation through electrical neutralization on the surface of soil particles. The results may provide a referencees for the research and design of rapid flocculation and residual water discharge of large-scale dredged materials.
  • [1]
    XU G Z, GAO Y F, HONG Z S, et al. Sedimentation behavior of four dredged slurries in China[J]. Marine Georesources & Geotechnology, 2012, 30(2): 143-156.
    [2]
    朱伟, 闵凡路, 吕一彦, 等. "泥科学与应用技术"的提出及研究进展[J]. 岩土力学, 2013, 34(11): 3041-3054. https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201311001.htm

    ZHU Wei, MIN Fanlu, LÜ Yiyan, et al. Subject of "mud science and application technology"and its research progress[J]. Rock and Soil Mechanics, 2013, 34(11): 3041-3054. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YTLX201311001.htm
    [3]
    黄英豪, 戴济群, 徐锴. 新拌固化淤泥的流动性和黏滞性试验研究[J]. 岩土工程学报, 2022, 44(2): 235-244. doi: 10.11779/CJGE202202004

    HUANG Yinghao, DAI Jiqun, XU Kai. Flowability and viscosity of freshly solidified dredged materials[J]. Chinese Journal of Geotechnical Engineering, 2022, 44(2): 235-244. (in Chinese) doi: 10.11779/CJGE202202004
    [4]
    苏德纯, 胡育峰, 宋崇渭, 等. 官厅水库坝前疏浚底泥的理化特征和土地利用研究[J]. 环境科学, 2007, 28(6): 1319-1323. https://www.cnki.com.cn/Article/CJFDTOTAL-HJKZ200706027.htm

    SU Dechun, HU Yufeng, SONG Chongwei, et al. Physicochemical properties of Guanting Reservoir sediment and its land application[J]. Environmental Science, 2007, 28(6): 1319-1323. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-HJKZ200706027.htm
    [5]
    金雪林, 薛路阳, 金杰. 生态清淤及淤泥快速处置一体化技术的应用[J]. 人民黄河, 2013, 35(9): 43-45. https://www.cnki.com.cn/Article/CJFDTOTAL-RMHH201309016.htm

    JIN Xuelin, XUE Luyang, JIN Jie. Application of ecological dredging silt and rapid disposal of the integration technology[J]. Yellow River, 2013, 35(9): 43-45. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-RMHH201309016.htm
    [6]
    李晓威, 吕鹏, 彭万里. 湖泊环保疏浚工程中泥浆絮凝效率的优化研究[J]. 人民黄河, 2016, 38(9): 64-67. https://www.cnki.com.cn/Article/CJFDTOTAL-RMHH201609017.htm

    LI Xiaowei, LÜ Peng, PENG Wanli. Optimization study on the mud flocculation efficiency in the lake environmental dredging engineering[J]. Yellow River, 2016, 38(9): 64-67. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-RMHH201609017.htm
    [7]
    章荣军, 蒋达飞, 郑俊杰. 絮凝调理对淤泥(浆)固结特性的影响[J]. 华中科技大学学报(自然科学版), 2021, 49(7): 1-6. https://www.cnki.com.cn/Article/CJFDTOTAL-HZLG202107001.htm

    ZHANG Rongjun, JIANG Dafei, ZHENG Junjie. Effect of flocculation conditioning on consolidation characteristics of mud(slurry)[J]. Journal of Huazhong University of Science and Technology (Natural Science Edition), 2021, 49(7): 1-6. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-HZLG202107001.htm
    [8]
    袁国辉, 胡秀青, 刘飞禹, 等. 絮凝-逐级加压电渗法改良疏浚淤泥试验研究[J]. 岩石力学与工程学报, 2020, 39(增刊1): 2995-3003. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2020S1040.htm

    YUAN Guohui, HU Xiuqing, LIU Feiyu, et al. Experimental study on the improvement of dredged slurry by flocculation-step-by-step loading voltage electro-osmosis method[J]. Chinese Journal of Rock Mechanics and Engineering, 2020, 39(S1): 2995-3003. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2020S1040.htm
    [9]
    刘飞禹, 吴文清, 海钧, 等. 絮凝剂对电渗处理河道疏浚淤泥的影响[J]. 中国公路学报, 2020, 33(2): 56-63, 72. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGGL202002005.htm

    LIU Feiyu, WU Wenqing, HAI Jun, et al. Effect of flocculants on electro-osmotic treatment of river dredged sludge[J]. China Journal of Highway and Transport, 2020, 33(2): 56-63, 72. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZGGL202002005.htm
    [10]
    IMAI G. Experimental studies on sedimentation mechanism and sediment formation of clay materials[J]. Soils and Foundations, 1981, 21(1): 7-20.
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