[1]刘杰,齐建华,韩士群,等.生物沥浸污泥 EPS 的变化规律及对 Zeta 电位、污泥粒径的影响[J].江苏农业学报,2017,(01):107-112.[doi:10.3969/j.issn.1000-4440.2017.01.017 ]
　LIU Jie,QI Jian-hua,HAN Shi-qun,et al.Changes of EPS in bioleaching sludge and the effect on Zeta potential and floc size[J].,2017,(01):107-112.[doi:10.3969/j.issn.1000-4440.2017.01.017 ]
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生物沥浸污泥 EPS 的变化规律及对 Zeta 电位、污泥粒径的影响()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2017年01期
页码:
107-112
栏目:
耕作栽培·资源环境
出版日期:
2017-02-28

文章信息/Info

Title:
Changes of EPS in bioleaching sludge and the effect on Zeta potential and floc size
作者:
刘杰1; 齐建华2; 韩士群1; 周庆1
（1. 江苏省农业科学院农业资源与环境研究所，江苏南京210014；2. 中国核电工程有限公司河北分公司，河北石家庄050000）
Author(s):
LIU Jie1; QI Jian-hua2; HAN Shi-qun1; ZHOU Qing1
(1. Institute of Agricultural Resource and Environmental Sciences， Jiangsu Academy of Agricultural Sciences，Nanjing 210014,China;2. China Nuclear power Engineering Co., Ltd. Shijiazhuang 050000, China)
关键词:
生物沥浸; 胞外聚合物; Zeta电位; 污泥粒径
Keywords:
bioleaching; extracellular polymeric substances(EPS); Zeta potential; floc size
分类号:
X705
DOI:
10.3969/j.issn.1000-4440.2017.01.017
文献标志码:
A
摘要:
本研究以氧化硫硫杆菌生物沥浸提高污泥脱水性能为目的，考察生物沥浸过程中污泥pH值、EPS总量和组成、Zeta电位、粒径等的变化，研究pH值、EPS总量和组成变化对Zeta电位、粒径的影响。结果显示，生物沥浸初期污泥EPSp、EPSh减少速度较快，随后减速变缓，EPSpy在整个过程中减少速度较慢；pH值、总EPS含量（EPST）、多糖含量（EPSpy）、蛋白质含量（EPSp）、腐殖质含量（EPSh）均对Zeta电位影响显著，EPST、EPSp、EPSh与Zeta电位相互关系为非线性关系，污泥Zeta电位降低是H+的静电中和作用和EPS电荷减少共同作用的结果；Zeta电位、EPST、EPSh、EPSp、EPSpy均对生物沥浸污泥粒径影响显著，EPST、EPSh、EPSp、EPSpy与污泥粒径的相互关系为非线性关系。大量H+的中和作用、 EPS电荷的减少、污泥絮体间空间位阻的降低共同促进了污泥絮体颗粒的增大。 〖KH+*9D〗〖ＧＫ2!2〗〖ＨＴ5”Ｈ〗摘要：本研究以氧化硫硫杆菌生物沥浸提高污泥脱水性能为目的，考察生物沥浸过程中污泥pH值、EPS总量和组成、Zeta电位、粒径等的变化，研究pH值、EPS总量和组成变化对Zeta电位、粒径的影响。结果显示，生物沥浸初期污泥EPSp、EPSh减少速度较快，随后减速变缓，EPSpy在整个过程中减少速度较慢；pH值、总EPS含量（EPST）、多糖含量（EPSpy）、蛋白质含量（EPSp）、腐殖质含量（EPSh）均对Zeta电位影响显著，EPST、EPSp、EPSh与Zeta电位相互关系为非线性关系，污泥Zeta电位降低是H+的静电中和作用和EPS电荷减少共同作用的结果；Zeta电位、EPST、EPSh、EPSp、EPSpy均对生物沥浸污泥粒径影响显著，EPST、EPSh、EPSp、EPSpy与污泥粒径的相互关系为非线性关系。大量H+的中和作用、 EPS电荷的减少、污泥絮体间空间位阻的降低共同促进了污泥絮体颗粒的增大。 〖KH+*9D〗〖ＧＫ2!2〗〖ＨＴ5”Ｈ〗摘要：本研究以氧化硫硫杆菌生物沥浸提高污泥脱水性能为目的，考察生物沥浸过程中污泥pH值、EPS总量和组成、Zeta电位、粒径等的变化，研究pH值、EPS总量和组成变化对Zeta电位、粒径的影响。结果显示，生物沥浸初期污泥EPSp、EPSh减少速度较快，随后减速变缓，EPSpy在整个过程中减少速度较慢；pH值、总EPS含量（EPST）、多糖含量（EPSpy）、蛋白质含量（EPSp）、腐殖质含量（EPSh）均对Zeta电位影响显著，EPST、EPSp、EPSh与Zeta电位相互关系为非线性关系，污泥Zeta电位降低是H+的静电中和作用和EPS电荷减少共同作用的结果；Zeta电位、EPST、EPSh、EPSp、EPSpy均对生物沥浸污泥粒径影响显著，EPST、EPSh、EPSp、EPSpy与污泥粒径的相互关系为非线性关系。大量H+的中和作用、 EPS电荷的减少、污泥絮体间空间位阻的降低共同促进了污泥絮体颗粒的增大。
Abstract:
To improve the sludge dewatering performance by thiobacillus thiooxidans, the changes of pH, total EPS content and EPS components, Zeta potential, floc size of sludge was investigated during bioleaching, and the correlation between pH, total EPS content, EPS components content and Zeta potential, floc size was analyzed. The result indicated that EPSp、EPSh sharply decreased at earlier bioleaching, then the decreasing trend became slow. The decreasion of EPSpy was slower in the process of bioleaching.pH, EPST, EPSpy, EPSp and EPSh had significant impact on Zeta potential. The relationships between EPST、EPSp、EPSh and Zeta potential were non-linear. Static neutralization of H+ and reduction of EPS charges resulted the decrease of Zeta potential. Zeta potential, EPST, EPSp, EPSh, EPSpy had significant impact on floc size. The relationships between EPST, EPSh, EPSp, EPSpy and floc size were non-linear. The increasing of floc size was caused by neutralization of H+,reducing of EPS charges and decreasing of steric hindrance between sludge flocs.

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备注/Memo

备注/Memo:
收稿日期：2016-04-20 基金项目：国家科技支撑计划项目(2015BAD13B04) 作者简介：刘杰（1984-），女，四川宜宾人，博士，助理研究员,研究方向为水污染控制。(E-mail)liujie1469@163.com 通讯作者：韩士群，(E-mail)shqunh@yahoo.com.cn
更新日期/Last Update: 2017-04-12