China Dairy ›› 2021, Vol. 0 ›› Issue (11): 92-99.doi: 10.12377/1671-4393.21.11.13

• TECHNOLOGICAL RESEARCH • Previous Articles     Next Articles

Study on the Improvement Effect of Perdisulfate on Anaerobic Methane Production of Dairy Wastewater Methane Production

WANG Tingting, TANG Xin, SUN Ying*   

  1. College of Resources and Environment, China Agricultural University, Beijing 100193
  • Online:2021-11-25 Published:2021-12-21

Abstract: Anaerobic digestion is an effective method for energy recover and harmless treatment of dairy wastewater. It is the low methane production that is limiting the popularization and application of anaerobic digestion. Experimental results showed that appropriate dosage of perdisulfate (PDS) could effectively improve the methane production of dairy wastewater. When PDS/TSS was about 0.1, the methane production increased most significantly. Compared with the control group(CK), the methane production increased by 130.00%. The results indicated that PDS can effectively improve the yield of volatile fatty acids (VFAs). The increase of acetic acid yield is conducive to the acetic acid type methanogenesis process. High throughput sequencing confirmed that PDS increased the relative abundance of acetic acid methanogens. Promoting the process of acetic acid methanogenesis may be an effective way to improve methane production.

Key words: dairy wastewater, anaerobic digestion, perdisulfate, methane production, microbial

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