[1]刘 金,王 毅,董良飞.河道淤泥固化剂研发与机理探究............刘 金,王 毅,董良飞(59)[J].常州大学学报(自然科学版),2018,30(06):59-65.[doi:10.3969/j.issn.2095-0411.2018.06.009]
　LIU Jin,WANG Yi,DONG Liangfei.Research and Development of River Sludge Curing Agent and Its Mechanism[J].Journal of Changzhou University(Natural Science Edition),2018,30(06):59-65.[doi:10.3969/j.issn.2095-0411.2018.06.009]
点击复制

河道淤泥固化剂研发与机理探究............刘 金,王 毅,董良飞(59)()
分享到：

常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
第30卷
期数:
2018年06期
页码:
59-65
栏目:
出版日期:
2018-11-28

文章信息/Info

Title:
Research and Development of River Sludge Curing Agent and Its Mechanism
作者:
刘 金1; 王 毅2; 董良飞1
(1. 常州大学 环境与安全工程学院,江苏 常州 213164; 2. 中卫市玉龙水电建筑安装有限公司,宁夏 中卫 755000)
Author(s):
LIU Jin1; WANG Yi2;  DONG Liangfei1
(1.School of Environmental & Safety Engineering, Changzhou University, Changzhou 213164, China; 2. Zhongwei Yulong Water & Electricity Construction and Installation Co., Ltd., Zhongwei 755000, China)
关键词:
淤泥处理;  固化材料;  淤泥强度;  重金属
Keywords:
suldge treatment;  curing materials;  sludge strength;  heavy metal
分类号:
X 53
DOI:
10.3969/j.issn.2095-0411.2018.06.009
文献标志码:
A
摘要:
针对河道淤泥高含水率、低强度的问题,通过单掺实验及正交实验,向淤泥中添加硅酸盐水泥、粉煤灰、KPAM(聚丙烯酸钾)、磺化油等4种固化材料,以固化稳定后淤泥的含水率、无侧限抗压强度为评价指标,探讨淤泥固化剂的最优药剂配比。研究表明,单独使用硅酸盐水泥、粉煤灰、KPAM和磺化油对淤泥进行固化处理均有不同效果,但使用单一固化材料存在前期固化效果差、固化体增容大及固化成本高等问题。通过正交实验,得到前期固化减水效果最佳固化剂配比为5%硅酸盐水泥、6%粉煤灰、0.2%KPAM及0.15%磺化油; 在养护时间达到55 d时,使用该配比固化处理后的淤泥无侧限抗压强度为3.04 MPa,可满足填筑要求。固化处理后的淤泥重金属浸出实验显示,该复合固化剂对淤泥中的重金属有一定的稳定作用。利用SEM、XRD等观测分析淤泥内部结构,发现KPAM与磺化油的长链条作用使淤泥内部结构密实,水泥及粉煤灰与淤泥中水分产生的水化反应提升了固化淤泥的强度。
Abstract:
To solve the problem of high water content and low strength of river sludge, river polluted sludge was taken as the research object. Single mixing experiment and orthogonal experiment were carried out by adding four curing materials(Portland cement, fly ash, KPAM and sulfonated oil)in order to make sludge solidified. The moisture content and unconfined compressive strength of sludge after solidification and stabilization were taken as evaluating indicator to get the optimum composition of the sludge curing agent. The study shows that the use of Portland cement, fly ash, KPAM and sulfonated oil on the sludge has different degrees of solidification effect, but the use of a single curing material faced with some problems, such as poor early curing effect, solidified body capacity increase, and high curing cost. Through the orthogonal experiment analysis, it is concluded that the best curing material ratio is 5% for Portland cement, 6% for fly ash, 0.2% for KPAM and 0.15% for sulfonated oil. When the curing time reaches 55 d, the unconfined compressive strength of the treated sludge is 3.04 MPa, and the filling requirement can be satisfied. The leaching experiment of heavy metals on the solidified sludge showed that the compound curing agent had a certain stabilizing effect on heavy metals in sludge. By means of SEM and XRD, the internal structure of sludge is observed, and it is determined that the long chain effect of KPAM and sulfonated oil is the main cause of the internal structure of the sludge, and the hydration reaction of cement and fly ash and sludge is the main reason to enhance the strength of solidified sludge.

参考文献/References:


[1] ZENTAR R, DUBOIS V,ABRIAK N E.Mechanical behaviour and environmental impacts of a test road built with marine dredged sediments [J]. Resources,Conservation and Recycling,2008,52(6):947-954.
[2]DUBOIS V,ABRIAK N E,ZENTAR R. The use of marine sediments as a pavement base material [J].Waste Management,2009,29:774-782.
[3]BAI F Y.The research of the river sludge as road subgrade filling materials in big city[C]//Trans Tech Publications,Engineering and Industry Technology Institute(EITI).[S.l.]:[s.n.],2014:9.
[4]LI C,LIN D F.Stabilization treatment of soft subgrade soil by sewage sludge ash and cement [J]. Journal of Hazardous Journal of Hazardous,2009,162:321-327.
[5]程福周,雷学文,孟庆山.水泥及其外加剂固化淤泥的试验研究[J].建筑学,2014,30(9):51-55.
[6]中华人民共和国水利部.土工试验方法标准:GB/T50123—1999 [S].北京:中国计划出版社,1999.
[7]中华人民共和国环境保护部.固体废物浸出毒性浸出方法水平振荡法:HJ557—2010[S]. 北京:中国环境科学出版社,2010.
[8]王清涛,李森,于华芹.利用赤泥制备轻质高强保温装饰一体化建筑材料[J].硅酸盐通报,2018(4):1393-1398.
[9]张庆.固化疏浚淤泥-磷石膏混合土工程性质及膨胀特性研究[D].昆明:昆明理工大学,2013.
[10]王清涛,李森,于华芹.利用赤泥制备轻质高强保温装饰一体化建筑材料[J].硅酸盐通报,2018(4):1393-1398.
[11]卢雪松.离子土壤固化剂加固武汉红色粘土的试验效果及其机理研究[D].北京:中国地质大学,2010.
[12]中国环境科学研究所固体废物污染控制技术研究所,环境标准研究所.危险废物鉴别标准:浸出毒性鉴别GB5085.3—2007[S].北京:中国标准出版社,2007:25.
[13]滕维民,李明宇.浅谈ISS固化剂的原理及特点[J].黑龙江交通科技,2010,33(1):50.
[14]张云升,孙伟,郑克仁.水泥-粉煤灰浆体的水化反应进程[J].东南大学学报(自然科学版),2006(1):118-123.
[15]彭丽思,付广义,陈繁忠.城市河道底泥的固化处理及机理探讨[J].环境工程,2016,34(S1):747-752.

相似文献/References:

[1]董良飞,张晓雅,龚佳豪,等.基于废弃物资源化的新型污泥固化剂研发[J].常州大学学报(自然科学版),2020,32(05):50.[doi:10.3969/j.issn.2095-0411.2020.05.007]
　DONG Liangfei,ZHANG Xiaoya,GONG Jiahao,et al.Research and Development of New Sludge Solidifying Agent Based on Waste Recycling[J].Journal of Changzhou University(Natural Science Edition),2020,32(06):50.[doi:10.3969/j.issn.2095-0411.2020.05.007]

备注/Memo

备注/Memo:

作者简介:刘金(1994—),男,江苏南通人,硕士生。通信联系人:董良飞(1972—),E-mail: dlf@cczu.edu.cn
更新日期/Last Update: 2018-10-28