Based on the life cycle data of the food waste composting system, Scenario B1 was modeled in EASE WASTE. Fig. 3 shows the normalization results of the whole system. Pretreatment and composting contributes slightly to global warming, photochemical ozone formation, and human toxicity due to the small capacity.However, composting technology has significant impacts on acidification (68.0 PE) and nutrient enrichment (76.9 PE). This is mainlyattributable to NH3(700.4 kg) and SO2(784.2 kg) emissions during food waste decomposition (700 t), and the NOxand NO3−releasedinto the air and water