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| Ca(Ⅱ)在活性污泥生物絮凝中的作用研究 | |
| 引用本文： | 朱哲,李涛,王东升,姚重华.Ca(Ⅱ)在活性污泥生物絮凝中的作用研究[J].环境工程学报,2009,3(4). |
| 作者姓名： | 朱哲 李涛 王东升 姚重华 |
| 作者单位： | 1. 华东理工大学资源与环境工程学院,上海,200237;中国科学院生态环境研究中心,环境水质学国家重点实验室,北京,100085 2. 中国科学院生态环境研究中心,环境水质学国家重点实验室,北京,100085 3. 华东理工大学资源与环境工程学院,上海,200237 |
| 摘 要： | 采用4个平行的序批式反应器(SBR),研究了进水Ca2+浓度对活性污泥絮体表而特性和结构稳定性的影响,并由此来确定Ca2+在生物絮凝中的作用.结果表明:随着进水Ca2+浓度的增加,污泥中的Ca含量逐渐增大.进水中Ca2+的加入,增大了污泥絮体的粒径和密度,进南改善了污泥的沉降性能;Ca2+的加入,使可供结合的蛋白质数量最高增至近1倍,污泥表面疏水性也相应增强;污泥絮凝性能的改善,主要和可供Ca2+结合的蛋白质含量增加有关,而非多糖;EDTA通过络合污泥絮体中的Ca2+,破坏了山Ca2+架桥形成的污泥絮体结构,这说明Ca2+可通过和胞外聚合物(extracellular polymeric substances,EPS)中的负电官能团架桥来促进污泥絮体的形成并维持絮体结构的稳定性. |
| 关 键 词： | 生物絮凝 钙离子 表面性质 结构稳定性 |
Role of Ca(Ⅱ)in bioflocculation of activated sludge |
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| Zhu Zhe,Li Tao,Wang Dongsheng,Yao Chonghua.Role of Ca(Ⅱ)in bioflocculation of activated sludge[J].Techniques and Equipment for Environmental Pollution Control,2009,3(4). | |
| Authors: | Zhu Zhe Li Tao Wang Dongsheng Yao Chonghua |
| Institution: | 1.School of Resources and Environmental Engineering;East China University of Science and Technology;Shanghai 200237;2.State Key Lab of Environmental Aquatic Chemistry;Research Center for Eco-Environnental Sciences;Chinese Academy of Sciences;Beijing 100085 |
| Abstract: | The effects of calcium ions on the floc surface properties and structural stability were investigated in four parallel sequencing batch reactors,and then the role of calcium ions in bioflocculation was determined.The results show that the calcium concentration in the sludge increases with increasing calcium ions concentration in the influent.The improvements in settling properties due to increased floc size and floc density are associated with the increase in calcium ions in the feed.The increase in relativ... |
| Keywords: | bioflocculation calcium ions surface properties structural stability |
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