[1]周建,魏利闯,詹芳蕾,等.生物表面活性剂与柠檬酸联合用于污泥电渗脱水[J].东南大学学报(自然科学版),2019,49(5):996-1004.[doi:10.3969/j.issn.1001-0505.2019.05.025]
 Zhou Jian,Wei Lichuang,Zhan Fanglei,et al.Electroosmotic dewatering of sludge by biosurfactant and its combination with citric acid[J].Journal of Southeast University (Natural Science Edition),2019,49(5):996-1004.[doi:10.3969/j.issn.1001-0505.2019.05.025]
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生物表面活性剂与柠檬酸联合用于污泥电渗脱水()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
49
期数:
2019年第5期
页码:
996-1004
栏目:
土木工程
出版日期:
2019-09-20

文章信息/Info

Title:
Electroosmotic dewatering of sludge by biosurfactant and its combination with citric acid
作者:
周建12魏利闯12詹芳蕾12陶燕丽123
1浙江大学滨海和城市岩土工程研究中心, 杭州 310058; 2浙江大学浙江省城市地下空间开发工程技术研究中心, 杭州 310058; 3浙江科技学院土木与建筑工程学院, 杭州 310023
Author(s):
Zhou Jian12 Wei Lichuang12 Zhan Fanglei12 Tao Yanli123
1Coastal and Urban Geotechnical Engineering Research Center, Zhejiang University, Hangzhou 310058, China
2Zhejiang Urban Underground Space Development Engineering Research Center, Zhejiang University, Hangzhou 310058, China
关键词:
生物表面活性剂 柠檬酸 城市污泥 电渗脱水
Keywords:
biosurfactant citric acid municipal sludge electroosmotic dewatering
分类号:
TU472.5
DOI:
10.3969/j.issn.1001-0505.2019.05.025
摘要:
为探究一种更高效、经济的污泥电渗脱水方法,通过在污泥中添加不同的生物表面活性剂(槐糖脂、鼠李糖脂、皂角苷)及生物表面活性剂与柠檬酸复配溶液,从累计排水量、电流密度、单位能耗系数、含水量分布和容许承载力等5方面对表面活性剂及复配溶液的优化电渗脱水效果的可行性进行分析,并从微观层面给予解释.试验结果表明:槐糖脂对污泥电渗脱水的提升效果最好;试验后各区域含水量表现为中部最低,阳极区次之,阴极区较高;容许承载力与含水量分布一致;生物表面活性剂与柠檬酸的复配溶液能优化电渗脱水效果,其中槐糖脂与柠檬酸复配溶液对脱水效果最好,试验后含水量最低可降至72%,承载力提高至206 kPa.因此,复配溶液联合电渗法相比其他非电渗污泥脱水技术具有高效、合理、低价的特点,可应用于实际工程.
Abstract:
To explore an efficient and economical electroosmotic dewatering method for sludge, three types of biosurfactant(sophorolipid, rhamnolipid and saponin)and their mixture with citric acid were studied. The optimization of electroosmotic dehydration was evaluated by cumulative drainage, current density, unit energy consumption coefficient, water content distribution, and bearing capacity was explained from microstructural level. Experimental results showed that the sophorolipid has the best improvement. After the test, the water content is the lowest in the middle, followed by the anode and the cathode area. The bearing capacity shows a good consistence with the water content distribution. The mixture of biosurfactant and citric acid can optimize the effect on the electroosmotic dehydration. The sophorolipid mixed with citric acid has the best performance, that is, the water content is reduced to 72% and the bearing capacity enhanced to 206 kPa. The mixture is more efficient, reasonable and economical than other non-electroosmotic sludge dewatering technology. Thus it is recommended to apply in real project.

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备注/Memo

备注/Memo:
收稿日期: 2018-10-10.
作者简介: 周建(1970—),女,博士,教授,博士生导师,zjelim@zju.edu.cn.
基金项目: 国家自然科学基金面上资助项目(51478425,51708507)、浙江省自然科学基金资助项目(LQ17E090001).
引用本文: 周建,魏利闯,詹芳蕾,等.生物表面活性剂与柠檬酸联合用于污泥电渗脱水[J].东南大学学报(自然科学版),2019,49(5):996-1004. DOI:10.3969/j.issn.1001-0505.2019.05.025.
更新日期/Last Update: 2019-09-20