聚乙烯醇凝胶包埋固定化细菌联合植物的除氮研究

Journal of Ecology and Rural Environment ›› 2014, Vol. 30 ›› Issue (6): 744-748.doi:

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Nitrogen Removal of Polyvinyl Alcohol(PVA) Gel Embedded With Nitrifying/Denitrifying Bacteria Coupled With Plant

ZHANG Yong-Dong, WANG Long-Mian, ZHANG Yi-Min, GAO Yue-Xiang, YANG Fei, CHE Yu-Xiao, ZHOU Chuang, LIU Qi-Gen

Key Laboratory of Freshwater Fishery Germplasm Resources,Minsitry of Agriculture,Shanghai Ocean University

Received:2014-03-05 Revised:2014-08-21 Online:2014-11-25 Published:2014-12-05
Contact: ZHANG Yi-Min Nanjing Institute of Environmental Sciences,Ministry of Environmental Protection E-mail:zhangymzym@163.com

Abstract

Abstract: To explore effect of polyvinyl alcohol(PVA) gel embedded with nitrifying/denitrifying bacteria in remedying ecology of eutroficated waterbody, a 21-day N-removal experiment was conducted using the gel coupled with two species of plants (Oenanthe clecumbensand Ipomoea aquatica). Results show that the concentration of TN, NH₄⁺-N, NO₃^--N, NO₂^--N and TP in the group added with bacteria was significantly lower than that in the group without bacteria, respectively（P<0.05）. Correlation analysis shows that nitrogen removal efficiency in the experimental groups was significantly and positively related to the addition of nitrifying bacteria and denitrifying bacteria embedded in PVA Gel(P<0.05). The mean growth rate of Oenanthe clecumbensand Ipomoea aquatica was 38.5 and 19.6 mg·g^-1·d^-1, respectively, in the experimental group added with the gel（R_GR）and 29.9 and 9.5 mg·g^-1·d^-1, respectively. in the group without the gel.

Key words: PVA ge, nitrifying bacteria, denitrifying, eutrophication, nitrogen removal

CLC Number:

X505

ZHANG Yong-Dong, WANG Long-Mian, ZHANG Yi-Min, GAO Yue-Xiang, YANG Fei, CHE Yu-Xiao, ZHOU Chuang, LIU Qi-Gen. Nitrogen Removal of Polyvinyl Alcohol(PVA) Gel Embedded With Nitrifying/Denitrifying Bacteria Coupled With Plant[J]. Journal of Ecology and Rural Environment, 2014, 30(6): 744-748.

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Nitrogen Removal of Polyvinyl Alcohol(PVA) Gel Embedded With Nitrifying/Denitrifying Bacteria Coupled With Plant

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