生物技术通报 ›› 2017, Vol. 33 ›› Issue (3): 116-121.doi: 10.13560/j.cnki.biotech.bull.1985.2017.03.017

• 研究报告 • 上一篇    下一篇

两株好氧反硝化聚磷菌的筛选、鉴定及水质净化研究

聂毅磊1, 贾纬1, 曾艳兵2, 罗立津1, 陈星伟1, 庄鸿1, 陈宏1   

  1. 1. 福建省微生物研究所 福建省新药(微生物)筛选重点实验室,福州 350007;
    2. 江西省农科院质标所,南昌330200
  • 收稿日期:2016-06-16 出版日期:2017-03-26 发布日期:2017-03-07
  • 作者简介:聂毅磊,男,硕士,副研究员,研究方向:生物工程;E-mail:nie2050@sina.com
  • 基金资助:
    福建省公益类科研院所专项(2014R1009-9),福建省科技重大专项(2013YZ0001-1),江西省自然科学基金(20142BBF60019)

Screening and Identification of Two Aerobic Denitrifying Phosphorus-accumulating Strains,and Denitrifying Biological Phosphorus Removal

NIE Yi-lei1, JIA Wei1, ZENG Yan-bing2, LUO Li-jing1, CHEN Xing-wei1, ZHUANG Hong1, CHEN Hong1   

  1. 1. Fujian Institute of Microbiology,Fujian Provincial Key Laboratory of Screening for Novel Microbial Products,Fuzhou 350007;
    2. Agricultural Product Quality Safety and Standards Institute, Jiangxi Academy of Agricultural Sciences,Nanchang 330200
  • Received:2016-06-16 Published:2017-03-26 Online:2017-03-07

摘要: 旨在从环境样品中筛选对富营养化水体具有良好脱氮除磷效果的好氧反硝化菌。采集福州某养猪场污水处理池中的水样。通过反硝化细菌培养基培养、BTB培养基平板分离、硝酸盐还原试验和蓝白斑筛选法、异染颗粒以及聚-β-羟基丁酸(PHB)颗粒染色试验,筛选获得两株具有脱氮除磷特性的菌株,命名为N1和N2。经16S rRNA 基因序列分析,N1和N2分别属于无色杆菌属(Achromobacter.sp)和短波单胞菌属(Brevundimonas.sp)。将菌株N1和N2复配,获得脱氮除磷复合菌FIM-1。考察了菌株对人工合成污水和富营养化水体脱氮除磷的效果。结果表明,两株菌在含磷量较低的水体中,对磷的去除率较高,相对于单菌,复合菌表现出更佳的脱氮除磷效果。

关键词: 好氧反硝化, 聚磷菌, 脱氮除磷, 富营养化

Abstract: It is aimed to screen highly-efficient aerobic denitrification bacterium simultaneously removing nitrogen and phosphorus(P)from the piggery wastewater sample in a pig farm of Fuzhou. Two effective strains,named as N1 and N2,were acquired by culturing with medium for denitrification strain,then isolating with the BTB streak plate,further screening with the blue- and white-colored spot,and finally dyeing with metachromatic granules and PHB(poly-β-hydroxybutyrate)granule. By 16S rRNA gene sequence analyses,two strains were identified as Achromobacter sp. and Brevundimonas sp.,respectively. Combined strain FIM-1 was formulated with N1 and N2. The effectiveness of their removing the nitrogen and phosphorus in artificial wastewater and eutrophic water was investigated. The results showed that the removal rate of nitrogen by N1,N2,and FIM-1 at 40 h was 9.20%,17.16%,and 32.84% respectively,and the removal rate of total P at 18 h was 14.04%,8.77%,and 28.95%,respectively,indicating that FIM-1 performed better than the single ones.

Key words: aerobic denitrification, phosphorus-accumulating organisms(PAOs), nitrogen and phosphorus removal, eutrophication