Source Jouranl of CSCD
Source Journal of Chinese Scientific and Technical Papers
Included as T2 Level in the High-Quality Science and Technology Journals in the Field of Environmental Science
Core Journal of RCCSE
Included in the CAS Content Collection
Included in the JST China
Indexed in World Journal Clout Index (WJCI) Report
HU Mengjie, ZHONG Lei, CAI Xiaoxian, QING Jinwu, SUN Yuru, LI Gaoyuan, RUAN Haihua, CHEN Guanyi. METABOLIC MECHANISM OF MICROBIAL DEGRADATION OF PETROLEUM HYDROCARBONS AND ITS RESEARCH PROGRESS[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(2): 234-246. doi: 10.13205/j.hjgc.202302031
Citation: YUAN Yue, WANG Bo, LI Yongbo, KE Hang, ZHAO Shuiqian. ENHANCEMENT OF CO-DIGESTION OF SLUDGE AND FOOD WASTE BY HIGH TEMPERATURE PRETREATMENT[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(2): 91-97. doi: 10.13205/j.hjgc.202302013

ENHANCEMENT OF CO-DIGESTION OF SLUDGE AND FOOD WASTE BY HIGH TEMPERATURE PRETREATMENT

doi: 10.13205/j.hjgc.202302013
  • Received Date: 2022-02-17
    Available Online: 2023-05-25
  • Publish Date: 2023-02-01
  • Co-digestion of sludge and food waste can improve the stabilization of sludge. To enhance the co-digestion of sludge and food waste, the operation strategy of high temperature pretreatment and medium temperature anaerobic digestion was put forward. Moreover, the mechanism of the co-digestion system was discussed from the macro and micro levels, in order to provide technical support for the application of the strategy in practical engineering. Results showed that the operation strategy can not only improve the hydrolysis but also enhance the co-digestion effect. The ratio of SCOD/TCOD increased from 33.9% to 65% after one-day high temperature pretreatment of sludge and food waste. Methane production rate and organic removal rate of this study achieved 0.54 L/g and 78.8% (SRT=20 d), 0.76 L/g and 56.6% (SRT=15 d), higher than the actual project of high temperature (150~170℃) and high pressure (1 MPa) for pretreatment. Illumina MiSeq sequencing revealed that hydrolytic/acidogenic bacteria, such as Porphyromonadaceae, Draconibacteriaceae, Eubacterium and Romboutsia, were enriched in the co-digestion system after high temperature pretreatment. The bacteria promoted hydrolysis/acidification, and made sure methanogens have enough substrate to produce methane. Therefore, the gas production from the co-digestion of sludge and food waste was strengthened.
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      沈阳化工大学材料科学与工程学院 沈阳 110142

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