A PILOT-SCALE TEST OF DANO DYNAMIC COMPOSTING OF SOLID RESIDUE FROM FOOD WASTE

QU Yang; ZHU Weibing; CHANG Yanqing; WU Yuan; PENG Mingguo; GU Xiaotao; SUN Rong

doi:10.13205/j.hjgc.202212007

Volume 40 Issue 12

Nov. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2022 > 40(12): 46-52,104

QU Yang, ZHU Weibing, CHANG Yanqing, WU Yuan, PENG Mingguo, GU Xiaotao, SUN Rong. A PILOT-SCALE TEST OF DANO DYNAMIC COMPOSTING OF SOLID RESIDUE FROM FOOD WASTE[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(12): 46-52,104. doi: 10.13205/j.hjgc.202212007

Citation:

QU Yang, ZHU Weibing, CHANG Yanqing, WU Yuan, PENG Mingguo, GU Xiaotao, SUN Rong. A PILOT-SCALE TEST OF DANO DYNAMIC COMPOSTING OF SOLID RESIDUE FROM FOOD WASTE[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(12): 46-52,104. doi: 10.13205/j.hjgc.202212007

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A PILOT-SCALE TEST OF DANO DYNAMIC COMPOSTING OF SOLID RESIDUE FROM FOOD WASTE

doi: 10.13205/j.hjgc.202212007

1. Welle Environmental Group Co., Ltd, Changzhou 213125, China;
2. School of Environmental & Safety Engineering, Changzhou University, Changzhou 213164, China

Received Date: 2021-12-30
Available Online: 2023-03-23

Abstract

Abstract

The pilot-scale DANO and static fermentation were used as the main equipment of the primary and secondary fermentation process, respectively, and the appropriate control parameters were explored for the kitchen solid slag produced in the actual project. According to conditioners, C/N and moisture content, five batches of M1, M2, D1, D2 and D3 were set. Physicochemical indexes, ammonia volatilization, oxygen content, cellulase and protease content and final fertilizer quality indexes were detected to reveal the effect of DANO dynamic composting of kitchen solid residues under different conditions. The results showed that: 1) when the environmental temperature was in the range of 18.5 to 25.8 ℃, the temperature rise of the primary fermentation process of DANO was less affected by the environment. Compared with straw, sawdust had the characteristics of a slow heating rate, high peak temperature and long composting duration; 2) when the moisture content was controlled to be 50% to 60%, the temperature of the straw pile body in the high-temperature period was more than 55 ℃, and the maintenance time was longer than 7 days; 3) it was reasonable to control the initial C/N of the straw pile in the range of 23 to 27. To sum up, the composting cycle could be controlled in the range of 28 to 33 days by controlling the relevant conditions. Relevant important indexes including final product C/N, moisture content, total nutrient and pH all met the requirements of China’s Field Standard Organic Fertilizer (NY/T 525—2021)
- food waste,
- DANO,
- composting,
- fertilizer efficiency,
- nitrogen loss

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References(29)

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