[1]杨松,赵丽娜,王达道,等.基于双重梯度的絮凝剂制备及在太湖清淤中的应用[J].中国给水排水,2026,42(15):111-116.
　YangSong,ZhaoLina,WangDadao,et al.Preparation of Flocculant Based on Dual Gradient and Its Application in Taihu Lake Dredging[J].China Water & Wastewater,2026,42(15):111-116.
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基于双重梯度的絮凝剂制备及在太湖清淤中的应用

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第42卷 期数: 2026年第15期 页码: 111-116 栏目: 出版日期: 2026-08-01
Title:
Preparation of Flocculant Based on Dual Gradient and Its Application in Taihu Lake Dredging
作者:
杨松1， 赵丽娜1， 王达道2,3， 方章顺1， 秦智峰3， 范子武2
（1.中交<苏州>城市开发建设有限公司，江苏 苏州 215000；2.南京水利科学研究院，江苏 南京 210029；3.南京瑞迪高新技术有限公司，江苏 南京 210024）
Author(s):
Yang　Song1， Zhao　Lina1， Wang　Dadao2，3， Fang　Zhangshun1， Qin　Zhifeng3， Fan　Ziwu2
（1. CCCC Urban Development and Construction Co. Ltd.， Suzhou 215000， China； 2. Nanjing Hydraulic Research Institute， Nanjing 210029， China； 3. Nanjing R&D Hi?Tech Co. Ltd.， Nanjing 210024， China）
关键词:
太湖底泥;  阳离子絮凝剂;  电荷密度;  分子质量梯度;  板框压滤;  含水率
Keywords:
Taihu Lake sediment;  cationic flocculant;  charge density;  molecular weight gradient;  plate and frame filter press;  moisture content
摘要:
基于分子质量与电荷密度双重梯度协同絮凝原理，使用高电荷密度、中等分子质量的聚二甲基二烯丙基氯化铵（PDA）与低电荷密度、高分子质量的阳离子聚丙烯酰胺（CPAM）成功制备了一系列复合阳离子絮凝剂PDAC。在模拟试验中，确定PDAC-1为PDAC系列产品中的最佳絮凝剂，并将其应用于太湖清淤工程板框压滤试验，结果表明，当PDAC-1投加量为绝干泥的1.2%时，进料及压榨时间由常规聚合氯化铝（PAC）+CPAM方案的4 000 s+400 s缩短至1 500 s+100 s，泥饼含水率最低降至25.7%，施工效率达5.25 m3/min，为对比方案的3.28倍，且尾水中总氮、COD及絮凝剂残留方面效果更优。
Abstract:
Based on the dual gradient synergistic flocculation principle with respect to molecular weight and charge density, a series of composite cationic flocculants, denoted as PDAC, were successfully prepared by combining poly dimethyldiallylammonium chloride (PDA), which possesses a high charge density and moderate molecular weight, with cationic polyacrylamide (CPAM), which features a low charge density and high molecular weight. Through simulation tests, PDAC-1 was identified as the optimal flocculant among the PDAC products and was subsequently applied in plate and frame filter press trials for the Taihu Lake dredging project. The results showed that at a PDAC-1 dosage of 1.2% (based on dry sludge mass), the feeding and pressing time was reduced from 4 000 s + 400 s with the conventional polyaluminum chloride (PAC) + CPAM scheme to 1 500 s + 100 s. The moisture content of the filter cake was lowered to a minimum of 25.7%, the operational efficiency reached 5.25 m3/min, which was 3.28 times that of the control scheme, and the PDAC-1 scheme exhibited superior performance in terms of total nitrogen, COD, and residual flocculant in the tail water.
更新日期/Last Update: 2026-08-01