生物学杂志

生物学杂志 ›› 2022, Vol. 39 ›› Issue (4): 67-.doi: 10.3969/j.issn.2095-1736.2022.04.067

• 研究报告 • 上一篇    下一篇

巢湖蓝藻与干麦草混合厌氧发酵产沼气研究

  

  1. 1. 合肥学院 生物食品与环境学院， 合肥 230601； 2. 合肥环境工程研究院， 合肥 230601；
    3. 安徽省环境污染防治与生态修复协同创新中心， 合肥 230601
  • 出版日期:2022-08-18 发布日期:2022-08-15
  • 作者简介:王磊，硕士研究生，实验师，研究方向为环境工程，E-mail: 592462275@qq.com
  • 基金资助:
    安徽省教育厅自然科学研究重点项目（KJ2017A545）； 国家重点研发计划项目(2020YFC1908601； 2020YFC1908602)

Study on biogas production by mixed anaerobic fermentation of blue algae and dry wheat straw in Chaohu Lake

  1. 1. School of Biology Food and Environment, Hefei University, Hefei 230601, China; 2. Hefei Institute of
    Environmental Engineering, Hefei 230601, China; 3. Collaborative Innovation Center for Environmental
    Pollution Prevention and Ecological Restoration of Anhui Province, Hefei 230601, China
  • Online:2022-08-18 Published:2022-08-15

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摘要： 为提高巢湖蓝藻的资源化利用率，以巢湖蓝藻为原料与干麦草，装填到厌氧发酵罐中，混合厌氧发酵产沼气。结果表明：干麦草∶蓝藻（超声40 min）∶颗粒污泥为2∶7∶1时，产气效果最好，挥发性固体产气率为333.78 mL/g (VS)，甲烷体积分数也最高，达到57%。对发酵液的pH、COD、NH3-N和产气量指标进行相关性分析，干麦草∶蓝藻∶颗粒污泥为2∶7∶1时，产气量与发酵液COD表现显著正相关；干麦草∶蓝藻（超声40 min）∶颗粒污泥为2∶7∶1时，发酵液COD与发酵液NH3-N呈现显著正相关。研究结果为巢湖蓝藻资源化提供了一条新的解决思路。

关键词: 巢湖蓝藻, 蓝藻暴发, 干麦草, 厌氧发酵

Abstract: In order to improve the resource utilization rate of Chaohu blue algae, blue algae from Chaohu and dry wheat straw were filled into anaerobic fermentation tank to produce biogas by mixed anaerobic fermentation. The results showed that the total biogas production with dry wheat straw∶algae(US 40 min)∶granular sludge ratio of 2∶7∶1 was the highest, the productive rate of 333.78 mL/g(VS), and the volume fraction of methane was the highest, reaching 57%. The correlation analysis of pH, COD, NH3-N and biogas production of fermentation broth showed that when the ratio of dry wheat straw∶blue algae∶granular sludge was 2∶7∶1, the biogas production was significantly positively correlated with the COD of fermentation broth; when dry wheat straw∶blue algae (US 40 min)∶granular sludge was 2∶7∶1, the COD of fermentation broth was significantly positively correlated with the NH3-N of fermentation broth. The results provide a new solution for the resource utilization of blue algae in Chaohu Lake.

Key words: Chaohu blue algae, blue algae outbreak, dry wheat straw, anaerobic fermentation

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