Environmental Sanitation Engineering ›› 2023, Vol. 31 ›› Issue (2): 95-100.doi: 10.19841/j.cnki.hjwsgc.2023.02.015

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Case Study and Operational Advantage Analysis of Food Waste Co-processing in Eco-Industrial Park

YANG Dekun， LONG Jisheng， LIU Shujia   

  1. Shanghai SUS Environment Co. Ltd.
  • Online:2023-04-25 Published:2023-04-25

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Abstract: Aiming at the problems of high investment and operation cost， large area occupied， and difficulty in making profits in the food waste treatment project， a co-processing mode of food waste in the eco-industrial park was proposed in this study. The food waste treatment project relied on the construction of municipal solid waste incineration plant and adopts the “pretreatment + co-processing” process to realize the collaborative treatment with the municipal solid waste incineration plant. A food waste co-processing project in an eco-industrial park in Shandong was taken as an example， the food waste pre-treatment process with “material receiving + sorting + pulping + sand removal and impurity removal + three-phase oil extraction” as the main body was introduced. The operating data was analyzed， the operating economics and carbon emission reductions of the two processes of co-processing and independent anaerobic were compared. The results showed that the pre-treatment process of the project was stable. During the operation， the equipment production capacity could reach about 11 t/h， the average yields of grease， residue and slurry were 2.87%， 36.56%， and 74.40% respectively. The waste consumption per ton of water， electricity， and steam basically met the design requirements， and the average consumption were 0.09 t， 18.93 kWh， and 0.06 t respectively. The 100 t/d food waste co-processing had obvious advantages over independent anaerobic treatment， the operating cost could be saved by 36.30%. Compared with the independent anaerobic treatment， co-processing saved about 237.17 MWh/a of electricity， and the equivalent carbon emission reduction could reach about 168.84 tCO2e/a. The co-processing mode of food waste in the eco-industrial park could be used as the recommended optimal solution for subsequent food waste treatment projects.

Key words: food waste, eco-industrial park, co-processing, independent anaerobic, operational advantages

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