MINERALIZATION MECHANISM OF ORGANIC MATTER IN THE PROCESS OF HEAP FERMENTATION IN A WASTE STORAGE PIT OF AN INCINERATION POWER PLANT

CHEN Zhengrui; ZHANG Shi; XIAO Mengyuan; YIN Linlin; DONG Jiankai; ZHANG Jun; WANG Shutao

doi:10.13205/j.hjgc.202305013

Volume 41 Issue 5

May 2023

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2023 > 41(5): 92-97

LIU Yu-long, ZHANG Zhi-feng, ZHANG Li, ZHANG Zhe, QIN Lu, CHAI Guo-dong, ZHENG Xing, WANG Dong-qi. EFFECT OF INFLUENT CONDITIONS ON PERFORMANCE AND MICROORGANISMS IN THE SIDE-STREAM ACTIVATED SLUDGE HYDROLYSIS PROCESS[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(5): 146-151,158. doi: 10.13205/j.hjgc.202205021

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CHEN Zhengrui, ZHANG Shi, XIAO Mengyuan, YIN Linlin, DONG Jiankai, ZHANG Jun, WANG Shutao. MINERALIZATION MECHANISM OF ORGANIC MATTER IN THE PROCESS OF HEAP FERMENTATION IN A WASTE STORAGE PIT OF AN INCINERATION POWER PLANT[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(5): 92-97. doi: 10.13205/j.hjgc.202305013

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MINERALIZATION MECHANISM OF ORGANIC MATTER IN THE PROCESS OF HEAP FERMENTATION IN A WASTE STORAGE PIT OF AN INCINERATION POWER PLANT

doi: 10.13205/j.hjgc.202305013

1. School of Environment, Harbin Institute of Technology, Harbin 150090, China;
2. School of Architecture, Harbin Institute of Technology, Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology, Ministry of Industry and Information Technology, Harbin 150090, China

Received Date: 2022-07-06

Abstract

Abstract

The fermentation process in the storage pit before waste incineration have an important impact on the moisture content and organic content of waste. The moisture content and organic content of waste are the key factors that determine the efficiency of waste incineration power generation, and they are obviously affected by temperature changes. In order to study the mineralization mechanism, the mineralization degree of organic matter in the heap fermentation process of storage tank garbage at six fermentation temperatures (10, 15, 20, 30, 40, 50 ℃) in 0~10 day was explored, and the dominant microorganisms and microbial communities in the heap fermentation process were studied by microbial sequencing. The results showed that under medium and high temperature conditions, the mineralization degree of solid waste and leachate by microorganisms reached a high level in the third to sixth days, and heap fermentation temperature in the waste storage pool were controlled at 15~20 ℃. The dominant bacteria in the process of garbage heap fermentation were Firmicutes, Proteobacteria and Actinobacteria, with relative abundances of 59.99% to 98.75%, 0.51% to 30.67% and 0.11% to 8.95%, respectively. In terms of genus level classification, Pediococcus, Latiplantibacillus, Levilactobacillus, Latilactobacillus, Limosilactobacillus, Companion Lactobacillus, Acetobacter, etc. had a large abundance, and were the dominant bacteria in the fermentation process. The dominant flora played a key role in the biodegradation, mineralization of organic matter, and hydrolysis and acidification in heap fermentation process. In 15~20 ℃, a certain amount of Firmicutes microbial agents could be added to improve the fermentation effect and power generation efficiency by waste incineration.
- incineration power generation,
- garbage storage pit,
- organic compound,
- mineralization,
- microbial flora

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References

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