| 利用淀粉基共混物作为反硝化固体碳源的研究 |
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| 引用本文： | 沈志强,吴为中,杨春平,陈佳利,王建龙.利用淀粉基共混物作为反硝化固体碳源的研究[J].环境科学,2012,33(5):1609-1613. |
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| 作者姓名： | 沈志强 吴为中 杨春平 陈佳利 王建龙 |
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| 作者单位： | 清华大学核能与新能源技术研究院,北京 100084;北京大学环境科学与工程学院,北京 100871;湖南大学环境科学与工程学院,长沙 410082;湖南大学环境生物与控制教育部重点实验室,长沙 410082;湖南大学环境科学与工程学院,长沙 410082;湖南大学环境生物与控制教育部重点实验室,长沙 410082;清华大学核能与新能源技术研究院,北京 100084 |
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| 基金项目： | 国家水体污染控制与治理科技重大专项(2008ZX07102-003) |
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| 摘 要： | 合成了淀粉/聚己内酯(PCL)热塑性共混物(SPCL6),并对其性能进行了表征.研究了SPCL6作为反硝化碳源和生物膜载体用于固相反硝化工艺的可行性.结果表明,SPCL6可作为固体碳源用于去除低C/N水中的硝酸盐,在接种1 d后SPCL6就有明显的脱氮效果.进水硝氮质量浓度对反硝化速率没有明显影响,以SPCL6为固体碳源的反硝化过程符合零级反应.剪切力对反硝化速率具有显著影响,转速从70 r.min-1提高至140 r.min-1时,反硝化速率(以N计)从0.016 5 mg.(g.h)-1提升至0.0328 mg.(g.h)-1.红外光谱结果表明,微生物利用后的SPCL6中淀粉和PCL均发生了降解.
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| 关 键 词： | 可生物降解聚合物 硝酸盐 反硝化 固体碳源 淀粉 |
| 收稿时间： | 2011/7/28 0:00:00 |
| 修稿时间： | 2011/11/11 0:00:00 |
Denitrification Using Starch/PCL Blends as Solid Carbon Source |
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| SHEN Zhi-qiang,WU Wei-zhong,YANG Chun-ping,CHEN Jia-li and WANG Jian-long.Denitrification Using Starch/PCL Blends as Solid Carbon Source[J].Chinese Journal of Environmental Science,2012,33(5):1609-1613. |
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| Authors: | SHEN Zhi-qiang WU Wei-zhong YANG Chun-ping CHEN Jia-li and WANG Jian-long |
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| Institution: | Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China;College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China;College of Environmental Science and Engineering, Hunan University, Changsha 410082, China;Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha 410082, China;College of Environmental Science and Engineering, Hunan University, Changsha 410082, China;Key Laboratory of Environmental Biology and Pollution Control, Ministry of Education, Hunan University, Changsha 410082, China;Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China |
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| Abstract: | Starch/PCL blends (SPCL6) was synthesized and characterized, and used as carbon source and biofilm supporter simultaneously, the feasibility and efficiency in the solid-phase denitrification process was investigated. The results showed that starch/PCL blends could serve as solid carbon source for denitrification of low C/N ratio wastewater. A high denitrification performance was observed after 1 d acclimatization. Solid-phase denitrification is a zero-order reaction, influent nitrate concentration had no obvious effect on denitrification rate. Hydrodynamic shear force played an important role in denitrification process, the denitrification rate increased from 0.0165 mg·(g·h)-1 to 0.0328 mg·(g·h)-1 when the rotating speed increasing from 70 r·min-1 to 140 r·min-1. The IR analysis confirmed the biodegradation of starch and PCL in SPCL6 blends. |
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| Keywords: | biodegradable polymers nitrate denitrification solid carbon source starch |
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