浙江农业学报 ›› 2017, Vol. 29 ›› Issue (4): 651-659.DOI: 10.3969/j.issn.1004-1524.2017.04.20

• 环境科学 • 上一篇    下一篇

缓释碳源与净水菌胶囊组合脱氮净水性能研究

闫秋月1, 柳永2, 王新2, 孙宏2, 姚晓红2, 吴逸飞2, 汤江武2, *, 葛向阳1, *   

  1. 1.华中农业大学 农业微生物学国家重点实验室,湖北 武汉 430070;
    2.浙江省农业科学院 植物保护与微生物研究所,浙江 杭州 310021
  • 收稿日期:2016-09-17 出版日期:2017-04-20 发布日期:2017-04-27
  • 通讯作者: 汤江武,E-mail:tangjiangwu@sina.com;葛向阳,E-mail:gxy@mail.hzau.edu.cn
  • 作者简介:闫秋月(1990—),女,山东聊城人,硕士研究生,研究方向为环境微生物学。E-mail:1558246742@qq.com
  • 基金资助:
    浙江省公益技术应用研究项目(2015C33046); 浙江省重大科技专项(2015C03004); 浙江省农科院创新提升工程项目; 温州市水体污染控制与治理科技创新项目(S20140021)

Research on co-denitrification performance of slow-release organic carbon source and water purification bacteria-embedded solid capsules

YAN Qiuyue1, LIU Yong2, WANG Xin2, SUN Hong2, YAO Xiaohong2, WU Yifei2, TANG Jiangwu2, *, GE Xiangyang1, *   

  1. 1. State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, China;
    2. Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
  • Received:2016-09-17 Online:2017-04-20 Published:2017-04-27

摘要: 在低碳氮比污水治理中,人工投加碳源和菌剂是必要手段,为此,特开展缓释碳源与净水菌胶囊的组合净水性能研究。试验用缓释碳源为乙酸钠包埋物,采用扫描电子显微镜观察释放前后形貌,并用高效液相色谱法进行检测。净水菌胶囊为包含施氏假单胞菌ADH1、肠杆菌AOZ1与枯草芽孢杆菌BSK9包埋物的W-capsule和B-capsule。试验水源为河道污水,在水桶中间歇曝气条件下开展试验。以无投加污水为对照,比较直投速溶碳源、直投未包埋菌剂、单独投加缓释碳源、单独投加净水菌胶囊以及组合投加缓释碳源和净水菌胶囊各试验组水体氨氮、总氮、COD等指标变化。结果表明,缓释碳源释放乙酸钠后内部结构变疏松,形成大量刨花样卷曲片层结构。净水试验中:投加缓释碳源组总氮的去除率达到60.2%,且试验过程中COD始终低于20 mg·L-1;投加固定化菌剂W-capsule组总氮去除率达39.1%;组合投加缓释碳源和净水菌胶囊组总氮去除率可达85.2%。可见,缓释碳源与净水菌胶囊组合在河道污水脱氮上表现出较高性能,应用潜力巨大。

关键词: 乙酸钠, 生物脱氮, 反硝化菌, 氨氧化菌

Abstract: For the treatment of wastewater with low carbon and high nitrogen, the indispensable and effective manner is to launch carbon and microbial inoculum. In this study, investigations were performed into the water purifying capacity of a novel and comprehensive management strategy, which integrated sustained-release carbon source and water purification bacteria-embedded solid capsules. Sodium acetate was used as the carbon source and embedded with carrier materials. Scanning electron microscopy (SEM) was carried out to analyze micro-morphological changes to the entrapments before and after release of the carbon source. The released carbon source (sodium acetate) was detected using high performance liquid chromatography (HPLC). The bacteria-embedded solid capsules were divided into W-capsule and B-capsule, which included Pseudomonas stutzeri ADH1, Enterobacter sp. AOZ1 and Bacillus subtilis BSK9. Experiments were performed on river sewage in buckets with intermittent aeration to investigate the change to some routine indexes covering ammonia nitrogen, total nitrogen (TN) and chemical oxygen demand (COD), etc. Sewage treated using instant/sustained-release carbon source and bacteria with/without embedding were tested as comparable controls. Untreated sewage was also tested as a negative control (NC). It was shown that extensive wood shaving-like structures formed inside the entrapments after the release of sodium acetate. TN remove rate of the sewage treated with sustained-release carbon source was 60.2%, and the COD kept less than 20 mg·L-1. For the sewage treated with W-capsule and the combination of sustained-release carbon source and bacteria-embedded capsules, the TN remove rate was 39.1% and 85.2%, respectively, which indicated high performance of the novel combinatorial strategy in nitrogen removal of river sewage.

Key words: sodium acetate, biological denitrification, denitrifying bacteria, nitrifying bacteria

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