| 碳源胁迫下脱氮除磷颗粒污泥性能变化及其机制 |
| 摘要点击 1593 全文点击 874 投稿时间：2016-10-08 修订日期：2016-12-25 |
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| 中文关键词 碳源 颗粒污泥 脱氮除磷 磷的组分 EPS |
| 英文关键词 carbon source granular sludge nitrogen and phosphorus removal phosphorus fractionation extracellular polymeric substances (EPS) |
| 作者 | 单位 | E-mail | | 秦诗友 | 武汉科技大学城市建设学院, 武汉 430065
武汉理工大学土木工程与建筑学院, 武汉 430070 | gutenday@126.com | | 陈威 | 武汉科技大学城市建设学院, 武汉 430065 | | | 马兆瑞 | 武汉理工大学土木工程与建筑学院, 武汉 430070
威海市建筑设计院有限公司, 威海 264200 | | | 刘小英 | 武汉理工大学土木工程与建筑学院, 武汉 430070
武汉理工大学资源与环境工程学院, 武汉 430070 | xy2000225@126.com | | 陈晓国 | 武汉理工大学土木工程与建筑学院, 武汉 430070 | | | 余文韬 | 武汉理工大学土木工程与建筑学院, 武汉 430070 | | | 夏媛媛 | 武汉理工大学土木工程与建筑学院, 武汉 430070 | | | 黄健 | 武汉理工大学土木工程与建筑学院, 武汉 430070 | |
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| 中文摘要 |
| 在SBR反应器中，逐步提高颗粒污泥反应器进水葡萄糖比例（醋酸钠/葡萄糖比分别为1：0、3：1、1：1、1：3和0：1，以COD计）研究碳源胁迫下，5个阶段污泥的物理性能、生化反应性能、胞外聚合物（extracellular polymeric substances，EPS）、磷组分以及反应器脱氮除磷等变化.反应器运行705 d结果表明，阶段Ⅳ污泥结构松散，平均粒径仅为0.5 mm，污泥释/吸磷速率、反硝化速率及总磷（total phosphorus，TP）含量最低，系统脱氮除磷效果最差；阶段Ⅰ和Ⅱ，污泥释/吸磷速率和反硝化速率较快，TP在72.36 mg·g-1以上，EPS高达350 mg·g-1左右，系统氮和磷去除率在94%以上；阶段V中，生化速率略慢于阶段Ⅰ和Ⅱ，污泥TP 69.60 mg·g-1，糖原高达224.18 mg·g-1，EPS约为200mg·g-1，系统表现出良好的脱氮除磷性能.各阶段污泥中，与Ca结合态磷（Ca-P）是污泥中磷的主要构成，无机磷（inorganic phosphorus，IP）对颗粒污泥除磷有重要影响. |
| 英文摘要 |
| In SBR reactor, the mature granular sludge fed with sodium acetate was gradually cultivated with different carbon sources (sodium acetate/glucose ratio was 1:0, 3:1, 1:1, 1:3 and 0:1, in terms of COD, respectively). During the five stages, the physical, biochemical properties, extracellular polymeric substances (EPS), phosphorus fractions and nitrogen and phosphorus removal efficiency of granular sludge were studied. 705 days' experimental results were showed as follows. At stage Ⅳ, the granular sludge had the smallest diameter of 0.5 mm; moreover the phosphorus release/uptake rate, denitrification rate and the total phosphorus (TP) content were the lowest. While at stages Ⅰ and Ⅱ, the phosphorus release/uptake and denitrification rates were the highest, meanwhile, the TP content reached up to 72.36 mg·g-1, and the EPS content was about 350 mg·g-1, as a result, the nitrogen and phosphorus removal efficiencies were both over 94%. Nevertheless at stage Ⅴ, the biochemical rates were slightly slower than values of stages Ⅰ and Ⅱ, simultaneously the TP, glycogen and EPS contents in sludge were maintained at 69.60 mg·g-1, 224.18 mg·g-1 and 200 mg·g-1, respectively, while high nitrogen and phosphorus removal efficiency was obtained. During all stages, Ca-P was the main phosphorus fraction, and inorganic phosphorus(IP) was closely related to phosphorus removal of granular sludge. |
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