工业水处理 ›› 2019, Vol. 39 ›› Issue (5): 42-45. doi: 10.11894/iwt.2018-0531

• 试验研究 • 上一篇    下一篇

秸秆发酵液作污水反硝化脱氮外加碳源的潜能研究

黄胡林1,2(),付新梅1,2,*(),周正3   

  1. 1. 西南科技大学环境与资源学院, 四川绵阳 621010
    2. 四川省低成本废水处理技术国际科技合作基地, 四川绵阳 621010
    3. 农业部沼气科学研究所能源微生物重点开放实验室, 四川成都 610041
  • 收稿日期:2019-04-01 出版日期:2019-05-20 发布日期:2019-08-07
  • 通讯作者: 付新梅 E-mail:huanghulin93@foxmail.com;fuxinmei68@163.com
  • 作者简介:黄胡林(1993-),硕士。E-mail:huanghulin93@foxmail.com
  • 基金资助:
    国家自然科学基金项目(21777143);四川省人社厅留学回国人员科技活动项目资助(14zd3128)

Potential study on the nitrogen removal by denitrification in wastewater by adding the anaerobic fermentation liquid of the straw as an external carbon source

Hulin Huang1,2(),Xinmei Fu1,2,*(),Zheng Zhou3   

  1. 1. School of Environment and Resources, Southwest University of Science and Technology, Mianyang 621010, China
    2. Sichuan International Science and Technology Cooperation Base of Low-cost Wastewater Treatment Technology, Mianyang 621010, China
    3. Key Laboratory of Energy Microbiology, Biogas Scientific Research Institute of the Ministry of Agriculture, Chengdu 610041, China
  • Received:2019-04-01 Online:2019-05-20 Published:2019-08-07
  • Contact: Xinmei Fu E-mail:huanghulin93@foxmail.com;fuxinmei68@163.com
  • Supported by:
    国家自然科学基金项目(21777143);四川省人社厅留学回国人员科技活动项目资助(14zd3128)

摘要:

为解决污水处理中碳源不足的问题,采用稻草、玉米秸秆在25、35、55℃下厌氧发酵,以COD/TN分别为4、6、8添加发酵液作外加碳源,探讨其反硝化脱氮效果。结果表明:稻草、玉米秸秆发酵的最佳温度均为35℃;稻草、玉米秸秆发酵液的碳源投加量均在COD/TN为6时脱氮率最佳,分别为80.1%、97.3%。综上所述,秸秆发酵液是一种有潜能的优质碳源。

关键词: 外加碳源, 农业秸秆, 发酵液, 反硝化

Abstract:

In order to solve the problem of insufficient carbon source in sewage treatment, anaerobic fermentation of rice straw and corn stalk were carried out at 25, 35, 55℃ and the denitrification efficiency in water was investigated by adding the fermentation liquid as an external carbon source according to COD/TN ratios of 4, 6, 8 respectively. The results showed that the optimum fermentation temperature of rice straw and corn stalk were both at 35℃. The optimum amounts of the two straws fermentation liquid added were both at COD/TN of 6. The removal rates of nitrate nitrogen for rice straw and corn stalk were 80.1% and 97.3%, respectively. In summary, the fermentation liquid of straws is an excellent external carbon source candidate.

Key words: external carbon source, agricultural straw, fermentation liquid, denitrification

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