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| Hyperthermophilic composting of livestock manure: A case study |
| Received:September 25, 2021 |
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| KeyWord:livestock manure;hyperthermophilic composting;hyperthermophilic microbes |
| Author Name | Affiliation | E-mail | | XING Ruizhi | College of Resources and Environment/Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, Fujian Agriculture and Forestry University, Fuzhou 350002, China | | | AI Chaofan | College of Resources and Environment/Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, Fujian Agriculture and Forestry University, Fuzhou 350002, China | | | WANG Mengyi | College of Resources and Environment/Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, Fujian Agriculture and Forestry University, Fuzhou 350002, China | | | TANG Rong | College of Resources and Environment/Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, Fujian Agriculture and Forestry University, Fuzhou 350002, China | | | YANG Zumu | Fujian Zhiqing Ecological Environment Protection Co., Ltd., Fuqing 350307, China | | | QIN Shuping | College of Resources and Environment/Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, Fujian Agriculture and Forestry University, Fuzhou 350002, China | | | CHEN Zhi | College of Resources and Environment/Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, Fujian Agriculture and Forestry University, Fuzhou 350002, China | chenzhi0529@163.com | | ZHOU Shungui | College of Resources and Environment/Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, Fujian Agriculture and Forestry University, Fuzhou 350002, China | |
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| Abstract: |
| Hyperthermophilic composting is an efficient and green resource recycling technology of organic solid waste. To address the lack of engineering research on large-scale hyperthermophilic composting, a case of large-scale livestock manure hyperthermophilic composting was investigated(300 t·d-1), including the principles, process selection, operating parameters, and economic benefits in the application of the hyperthermophilic composting process. The results showed that the maximum temperature for large-scale hyperthermophilic composting of livestock manure was above 80℃, and fermentation was completed in 20 to 30 days with trough and windrow composting. After composting, the moisture content and organic matter were maintained at approximately 44% and 35%, respectively, the EC value was 2.9 mS·cm-1, and the levels of water-soluble organic carbon and water-soluble total nitrogen were maintained at 3.0 mg·kg-1 and 0.9 mg·kg-1, respectively. Moreover, the decomposed material could be prepared into functional organic fertilizer after secondary processing. Hyperthermophilic composting has low investment cost, high product value, and increased economic benefits. Currently, a new model of reproducible recycling and utilization of livestock manure has been developed, which can provide a reference for the large-scale hyperthermophilic composting disposal of organic solid waste, such as agricultural and forestry residues, domestic waste, and kitchen residue. |
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