Based on the life cycle data of the food waste composting system, Scenario B1 was modeled in EASEWASTE. 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 mainly attributable to NH3 (700.4 kg) and SO2 (784.2 kg) emissions during food waste decomposition (700 t), and the NOx and NO3− released into the air and water.