TREATMENT OF DOMESTIC WASTE BY ULTRA-HIGH TEMPERATURE SPONTANEOUS HEATING AEROBIC COMPOSTING PROCESS

WANG Xiao-cheng; GUO Ying; YAN Kai-hong

doi:10.13205/j.hjgc.202010029

Volume 38 Issue 10

Nov. 2020

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WANG Xiao-cheng, GUO Ying, YAN Kai-hong. TREATMENT OF DOMESTIC WASTE BY ULTRA-HIGH TEMPERATURE SPONTANEOUS HEATING AEROBIC COMPOSTING PROCESS[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(10): 183-189. doi: 10.13205/j.hjgc.202010029

Citation:

WANG Xiao-cheng, GUO Ying, YAN Kai-hong. TREATMENT OF DOMESTIC WASTE BY ULTRA-HIGH TEMPERATURE SPONTANEOUS HEATING AEROBIC COMPOSTING PROCESS[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(10): 183-189. doi: 10.13205/j.hjgc.202010029

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TREATMENT OF DOMESTIC WASTE BY ULTRA-HIGH TEMPERATURE SPONTANEOUS HEATING AEROBIC COMPOSTING PROCESS

doi: 10.13205/j.hjgc.202010029

1. School of Civil Engineering, Southeast University, Nanjing 210096, China;
2. School of Agricultural Economics and Management, Shanghai Ocean University, Shanghai 201306, China;
3. College of Biological and Environmental Engineering, Jiangsu University of Science and Technology, Zhenjiang 212000, China

Received Date: 2019-07-16

Abstract

Abstract

Ultra-high temperature spontaneous heating has been applied to aerobic composting of excess sludge. However, the effect of this technology on aerobic composting of domestic waste was not clear. In addition, the effect of nitrogen fixing agent calcium superphosphate (CS) on ultra-high temperature spontaneous heating aerobic composting for domestic waste treatment was not clear, either. In this study, the blank group (R1) and the composting system with CS (R2) were established. The changes of temperature, oxygen content, moisture content, greenhouse gas release, soluble COD and maturity index, in the process of super-high temperature spontaneous heating of domestic waste under the influence of CS were investigated. The effects of CS on the microbial community characteristics of domestic waste composting were analyzed. The results showed that the highest temperature of R2 was 80.3℃, higher than that of blank group, and the lowest oxygen content and water content were lower than that of R1. The maximum releasing rates of methane and N₂O in R2 were 0.09 g/(kg·d) and 1.3 g/(kg·d), respectively, significantly lower than those in R1. The presence of CS was beneficial to nitrogen conservation in MSW composting. In addition, the maximum soluble COD content in R2 was 42.3 mg/g, slightly higher than that in R1. CS was beneficial to the release of organic matter in the reactor. The relative abundance of Saccharomonospor and Planifilum in R2 was 25.6% and 10.3% respectively, and the maturity of the stack was also higher.
- domestic waste,
- ultra-high temperature spontaneous heating,
- nitrogen fixing agent,
- greenhouse gases

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References(18)

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