ENGINEERING APPLICATION OF A DRY-WET PRESS SEPARATION-HYDROTHERMAL CARBONIZATION TECHNOLOGY FOR FOOD WASTE

YANG Guodong; LAN Tian; SONG Mengzhu; DU Yufeng; LIU Mengdan; SONG Yingchun; JIANG Jianguo

doi:10.13205/j.hjgc.202212008

Volume 40 Issue 12

Nov. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2022 > 40(12): 53-60

YANG Guodong, LAN Tian, SONG Mengzhu, DU Yufeng, LIU Mengdan, SONG Yingchun, JIANG Jianguo. ENGINEERING APPLICATION OF A DRY-WET PRESS SEPARATION-HYDROTHERMAL CARBONIZATION TECHNOLOGY FOR FOOD WASTE[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(12): 53-60. doi: 10.13205/j.hjgc.202212008

Citation:

YANG Guodong, LAN Tian, SONG Mengzhu, DU Yufeng, LIU Mengdan, SONG Yingchun, JIANG Jianguo. ENGINEERING APPLICATION OF A DRY-WET PRESS SEPARATION-HYDROTHERMAL CARBONIZATION TECHNOLOGY FOR FOOD WASTE[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(12): 53-60. doi: 10.13205/j.hjgc.202212008

Citation:

YANG Guodong, LAN Tian, SONG Mengzhu, DU Yufeng, LIU Mengdan, SONG Yingchun, JIANG Jianguo. ENGINEERING APPLICATION OF A DRY-WET PRESS SEPARATION-HYDROTHERMAL CARBONIZATION TECHNOLOGY FOR FOOD WASTE[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(12): 53-60. doi: 10.13205/j.hjgc.202212008

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ENGINEERING APPLICATION OF A DRY-WET PRESS SEPARATION-HYDROTHERMAL CARBONIZATION TECHNOLOGY FOR FOOD WASTE

doi: 10.13205/j.hjgc.202212008

1. School of Environment, Harbin Institute of Technology, Harbin 150001, China;
2. School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China;
3. School of Environment, Tsinghua University, Beijing 100084, China;
4. Baoan District Waste Disposal Station of Shenzhen, Shenzhen 518101, China

Received Date: 2022-08-09
Available Online: 2023-03-23

Abstract

Abstract

In this study, a case project of dry-wet press separation of food waste-hydrothermal carbonization technology was taken as the research object. The operational efficiency of the food waste treatment project was evaluated, and the energy consumption and cost for per unit of food waste treatment were analyzed. The study results were as follows: the project treated an average of 115.32 t of food waste per day, with a waste mass reduction rate of 60.31%. The products obtained by dry-wet press separation-hydrothermal carbonization of food waste were dry waste and hydrothermal carbon, the moisture contents of them were 68.41% and 35.92%, and the low-level calorific values were 5029.61 J/g and 14424.80 J/g, respectively. The combustion performance of the products was substantially higher than raw food waste. The unit energy consumption of food waste treatment was 46.26 kW·h/t, of which hydrothermal carbonization treatment and wet and dry separation and pressing treatment accounted for 72.14% and 10.54%, respectively. The cost of food waste disposal was RMB 386.56/t. The project effectively achieves the reduction and reuse of food waste. The treatment products have promising applications in making waste-derived fuels, adsorbent materials, biochar-based fertilizers and soil amendments. This research provides reliable design reference and technical support for the development of urban food waste treatment projects.
- food waste,
- dry-wet presses,
- hydrothermal carbonization,
- reduction,
- reuse

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References(28)

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