调质剂对河道淤泥泥水分离性的影响
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河海大学环境学院;;河海大学浅水湖泊综合治理与资源开发教育部重点实验室,河海大学环境学院;;河海大学浅水湖泊综合治理与资源开发教育部重点实验室,河海大学环境学院;;河海大学浅水湖泊综合治理与资源开发教育部重点实验室,河海大学环境学院;;河海大学浅水湖泊综合治理与资源开发教育部重点实验室,江苏省秦淮河水利工程管理处,江苏省固体废物监督管理中心,河海大学环境学院;;河海大学浅水湖泊综合治理与资源开发教育部重点实验室

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TB34

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江苏省水利科技项目,复合防渗新材料开发及其在灌区节水工程中示范应用(516018612);江苏高校优秀学科建设工程资助项目(PAPD);国家重大仪器设备开发专项经费,原子荧光重金属在线监测设备的开发与应用(2014YQ060773);948项目:水中痕量挥发性有机物检测系统(30155045912);江苏省环保局科技项目:工业废盐无害化资源化处理的关键技术研究及示范(20165043212);太湖水污染治理专项资金(第十期)科研课题,乡镇复合污染型河浜水质改善技术集成研究与综合示范(TH2016402)


Influence of conditioning agent on separation of muddy water in river channel
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College of environment,Hohai University1, Jiangsu Nanjing 210098, China; Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, Hohai University2, Nanjing 210098, China,,,,,,

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    摘要:

    河湖疏浚工程中,河道淤泥泥水分离技术的发展要点在于减少运量,降低成本和避免二次污染,因此如何增强淤泥的泥水分离性能至关重要。淤泥泥水分离性由淤泥流动性反映,淤泥流动性又由坍落度直径来表征,本文初步选取常见的几种絮凝剂分别对河道淤泥进行絮凝试验,结果显示阴离子生物试剂、硅酸盐水泥、石灰、硫铝酸盐水泥、PAM试剂能显著降低淤泥的流动性,其中石灰的絮凝效果最优,70%含水率下500g长江南京段淤泥中投加5g石灰对比空白组的坍落度直径下降了68%。在复配试验中,选用石灰分别复配阴离子生物试剂、硅酸盐水泥、硫铝酸盐水泥和PAM试剂进行絮凝试验,发现投加5g石灰和3mL阴离子试剂并静置3h的综合絮凝效果最佳,降低淤泥流动性的效果最优,其坍落度直径相比空白组下降了78%,从而能起到有效提高河道淤泥泥水分离性的作用,为河道淤泥的流动性能研究开展探索工作。

    Abstract:

    The lake river dredging project, the key of the development of river sludge dewatering technology is to reduce the volume, reduce costs and avoid secondary pollution. Therefore, how to enhance the performance of slurry separation is very important. Mud slurry separation from silt liquidity reflects the silt liquidity slump by diameter characterization, this paper selects several kinds of common flocculants were flocculation tests on the river silt, the results showed that anion biological reagent, Portland cement, lime, sulphoaluminate cement, PAM reagent can significantly reduce the liquidity of silt, the flocculation effect of lime and the optimal moisture content, compared with the blank group, the slump diameter of the 500g silt in the Nanjing section of the Yangtze River decreased 68% with the addition of 5 g lime under the water content of 70%. In the mixed experiment, using lime respectively mixed anionic biological reagents, Portland cement, sulphoaluminate cement and PAM reagent flocculation test, found that the comprehensive effect of flocculation adding 5g lime and 3mL anion reagent and static 3h, reduce the silt liquidity optimal effect, the slump diameter decreased by 78% compared with the blank group thus, can effectively improve the river silt slurry separation effect, so that to carry out the exploration work for the research of the flow properties of river silt.

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徐 迪,陈 立,张 茜,等. 调质剂对河道淤泥泥水分离性的影响[J]. 科学技术与工程, 2018, 18(34): .
xu di,,,et al. Influence of conditioning agent on separation of muddy water in river channel[J]. Science Technology and Engineering,2018,18(34).

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  • 收稿日期:2018-05-12
  • 最后修改日期:2018-07-06
  • 录用日期:2018-07-18
  • 在线发布日期: 2018-12-20
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