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 andcomposting contributes slightly to global warming, photochemi-cal ozone formation, and human toxicity due to the small capacity.However, composting technology has significant impacts on acidi-fication (68.0 PE) and nutrient enrichment (76.9 PE). This is mainlyattributable to NH3(700.4 kg) and SO2(784.2 kg) emissions duringfood waste decomposition (700 t), and the NOxand NO3−releasedinto the air and water