Environmental impacts and optimization simulation of aerobic anaerobic combination treatment technology for food waste with life cycle assessment

Yan, Ying1; Gu, Ruinian1; Zhu, Manman1; Tang, Mingqi1; He, Qun1; Tang, Yuanyuan2; Liu, Lili1,3

2023-06-01

10.1016/j.wasman.2023.03.036

WASTE MANAGEMENT   影响因子和分区

0956-053X

1879-2456

After the implementation of waste sorting policy in Shanghai, the amount of food waste (FW) separation and treatment demand has increased significantly. It is necessary to establish the life cycle assessment (LCA) to assess the environmental impacts of various treatment technologies comprehensively, thus provide support for sorting, recycling, treatment and disposal strategies of FW. In this study, a local FW treatment plant in Shanghai, using typically aerobic anaerobic combination treatment technology was selected to analyze the environmental im-pacts with LCA. The process mainly included pretreatment, power, aerobic composting, anaerobic digestion, and further process systems. LCA results showed that the environmental impacts mainly came from the power and aerobic composting systems on the fine particulate matter formation and eutrophication, and freshwater eco-toxicity and terrestrial acidification, respectively. Considering the carbon footprint, the aerobic composting system contributed 3.61E + 02 kg CO2 eq and represented the largest source of carbon emission. The soil conditioner yielded both environmental benefits on eutrophication and terrestrial ecotoxicity, and ecological benefits of 75.33 million CNY per year being the major revenue for the treatment plant. It also suggested that the biogas generation capacity of anaerobic digestion could be increased to achieve electricity self-sufficiency, thus save about 7.12 million CNY per year in electricity costs, and avoid corresponding environmental impacts caused by coal-fired. In summary, the aerobic anaerobic combination treatment could be further optimized and applied in FW treatment to reduce the environmental impacts, and enhance resource recovery and secondary pollution control.

Life cycle assessment Food waste Aerobic anaerobic combination treatment Solid-liquid separation Soil conditioner

SCI ; EI

英语

其他

National Key Research and Develop- ment Program of China[2018YFC1901000]

Engineering ; Environmental Sciences & Ecology

Engineering, Environmental ; Environmental Sciences

WOS:000986686800001

PERGAMON-ELSEVIER SCIENCE LTD

20231713947121

Anaerobic digestion ; Carbon footprint ; Costs ; Environmental technology ; Eutrophication ; Pollution control

Environmental Engineering:454 ; Cost and Value Engineering; Industrial Economics:911

ENGINEERING

Web of Science

1.East China Univ Sci & Technol, Sch Resource & Environm Engn, State Environm Protect Key Lab Environm Risk Asses, Shanghai 200237, Peoples R China
2.Southern Univ Sci & Technol, Coll Engn, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China
3.130 Meilong Rd, Shanghai 200237, Peoples R China

Yan, Ying,Gu, Ruinian,Zhu, Manman,et al. Environmental impacts and optimization simulation of aerobic anaerobic combination treatment technology for food waste with life cycle assessment[J]. WASTE MANAGEMENT,2023,164:228-237.

Yan, Ying.,Gu, Ruinian.,Zhu, Manman.,Tang, Mingqi.,He, Qun.,...&Liu, Lili.(2023).Environmental impacts and optimization simulation of aerobic anaerobic combination treatment technology for food waste with life cycle assessment.WASTE MANAGEMENT,164,228-237.

Yan, Ying,et al."Environmental impacts and optimization simulation of aerobic anaerobic combination treatment technology for food waste with life cycle assessment".WASTE MANAGEMENT 164(2023):228-237.