ANALYSIS OF CARBON OFFSET AND ENERGY RECOVERY POTENTIAL OF DIFFERENT FOOD WASTE RESOURCE DISPOSAL METHODS

CHEN Wenhao; YUAN Huizhou; KE Shuizhou; LIU Xiaoming

doi:10.13205/j.hjgc.202307006

Volume 41 Issue 7

Jul. 2023

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2023 > 41(7): 37-44

SUN Xing, HU Kai, LEI Chen-yu, CHEN Wei. EFFECT OF FREEZING/THAWING PRETREATMENT ON EXCESS SLUDGE DISINTEGRATION AND TREATMENT EFFICIENCY OF MICROBIAL ELECTROLYSIS CELL[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(4): 147-155. doi: 10.13205/j.hjgc.202104023

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CHEN Wenhao, YUAN Huizhou, KE Shuizhou, LIU Xiaoming. ANALYSIS OF CARBON OFFSET AND ENERGY RECOVERY POTENTIAL OF DIFFERENT FOOD WASTE RESOURCE DISPOSAL METHODS[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(7): 37-44. doi: 10.13205/j.hjgc.202307006

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ANALYSIS OF CARBON OFFSET AND ENERGY RECOVERY POTENTIAL OF DIFFERENT FOOD WASTE RESOURCE DISPOSAL METHODS

doi: 10.13205/j.hjgc.202307006

1. College of Civil Engineering, Hunan University, Changsha 410000, China;
2. School of Materials and Environmental Engineering, Shenzhen Polytechnic, Shenzhen 518000, China

Received Date: 2022-03-06

Abstract

Abstract

With China's food waste production increasing yearly, recycling energy from food waste becomes a key issue in solid waste treatment. In order to explore the carbon emissions and energy usage of several main food waste recycling methods, this paper used the accounting methods recommended by IPCC and related literature to evaluate the carbon offset and energy recovery of four treatment methods, sewage co-treatment, anaerobic digestion, incineration and composting. The results showed that the carbon offset potential of the four treatment methods was -56.9, -88.6, 44.2, and 222.0 kg CO₂/t FW, respectively. The energy recovery potential was -116.0, -215.0, 58.9, and 61.0 kW·h/t FW, respectively. According to the sensitivity analysis, the co-treatment and anaerobic digestion mode have strong stability in addition to the technical influence, indicating that co-treatment and anaerobic digestion are ideal resource treatment methods. The incineration method involves a large amount of carbon emissions due to the dehydration process, and the overall stability is poor. Composting can't achieve carbon emission reduction and energy recovery, so its application should be minimized. To sum up, the priority sequence of food waste recycling disposal was anaerobic digestion, sewage co-treatment, incineration and composting.
- food waste,
- sewage treatment,
- energy recovery,
- carbon neutral

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References(26)

References

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