工业水处理 ›› 2021, Vol. 41 ›› Issue (6): 119-126. doi: 10.11894/iwt.2021-0259

• 工业污水处理及回用专题 • 上一篇    下一篇

垃圾渗滤液膜浓缩液脱氮功能菌的筛选及特性研究

陆杰1(),杨庆2,黄开龙1,2,*(),叶林1,罗琦1,2,张徐祥1,任洪强1   

  1. 1. 南京大学环境学院, 污染控制与资源化研究国家重点实验室, 江苏南京 210023
    2. 南京江岛环境科技研究院有限公司, 江苏南京 210019
  • 收稿日期:2021-04-28 出版日期:2021-06-20 发布日期:2021-07-08
  • 通讯作者: 黄开龙 E-mail:619612908@qq.com;huangkl@nju.edu.cn
  • 作者简介:陆杰(1995-), 硕士。E-mail: 619612908@qq.com
  • 基金资助:
    江苏省重点研发计划(社会发展)项目(BE2019635);污染控制与资源化研究国家重点实验室开放基金资助项目(PCRRF19004);污染控制与资源化研究国家重点实验室开放基金资助项目(PCRRF20018);江苏省大气环境监测与污染控制高技术研究重点实验室开放基金项目(KHK1804);江苏高校优势学科建设工程资助项目(PAPD)

Screening and characteristics study of denitrification bacteria for landfill leachate membrane concentrate

Jie Lu1(),Qing Yang2,Kailong Huang1,2,*(),Lin Ye1,Qi Luo1,2,Xuxiang Zhang1,Hongqiang Ren1   

  1. 1. State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China
    2. Nanjing Jiangdao Institute of Environmental Research Co., Ltd., Nanjing 210019, China
  • Received:2021-04-28 Online:2021-06-20 Published:2021-07-08
  • Contact: Kailong Huang E-mail:619612908@qq.com;huangkl@nju.edu.cn

摘要:

通过富集、驯化和筛选,从垃圾渗滤液活性污泥中分离获得一株垃圾渗滤液膜浓缩液高效脱氮菌Pseudomonas balearica EBT-1。利用单因素实验考察得到EBT-1处理垃圾渗滤液膜浓缩液的最佳温度为30℃、最优C/N为4、最适菌液投加体积为待处理液体积的10%。EBT-1属于耐盐菌,对盐度耐受范围为0%~5%;对重金属Cr(Ⅵ)、Cu(Ⅱ)、Ni(Ⅱ)耐受范围分别为0~250 μg/L、0~3 000 μg/L、0~2 500 μg/L。外源投加EBT-1可强化系统对垃圾渗滤液膜浓缩液中总氮的脱除效果,并大大缩短冲击条件下系统的恢复时间。

关键词: 垃圾渗滤液膜浓缩液, 高效反硝化菌, 生物强化

Abstract:

A highly-efficient denitrification bacterium Pseudomonas balearica EBT-1 was isolated from landfill leachate activated sludge by domestication, enrichment and screening. The study investigated the optimum conditions for EBT-1 to treat the landfill leachate membrane concentrate and the results showed that the optimal temperature was 30℃, C/N ratio was 4 and the volume of bacteria solution was 10% of the volume of the solution to be treated. EBT-1 was a kind of salt-tolerant bacterium and could resist the salinity shock of 5%. The tolerance range of EBT-1 to heavy metals Cr(Ⅵ), Cu(Ⅱ), Ni(Ⅱ) were 0-250 μg/L, 0-3 000 μg/L, 0-2 500 μg/L, respectively. The application of functional bacteria EBT-1 could strengthen the removal rate of total nitrogen from the landfill leachate membrane concentrate by bioreactor and greatly shorten the recovery time of the system malfunction.

Key words: landfill leachate membrane concentrate, high-efficiency denitrification bacteria, bioaugmentation

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