关键词: 厨余垃圾, 堆肥产物, 植物种子发芽指数, 重金属, 养分

Abstract: The kitchen waste from composting treatment facilities in Beijing was tested and analyzed. The results showed that the water content of kitchen waste was 79.19%～83.36%， the organic matter content was 89.62%～96.22%， the total nitrogen content was 1.16%～1.42%， the total phosphorus content was 2.36%～2.94%， the total potassium content was 1.03%～1.30%， the total nutrient content was 4.97%～5.65%， the pH was 4.20～5.30， and the content of heavy metals was low， so the kitchen waste could be used as aerobic compost material. The quality of the products obtained by compost was tested by sampling， showed the average water content of compost products was 19.35%， the average organic matter content was 73.34%， the average total nitrogen content was 2.66%， the average total phosphorus content was 0.67%， the average total potassium content was 0.85%， the average total nutrient content was 4.17%， and the average pH was 6.44. The single factor content of heavy metal pollutants was Cr>Pb>As>Cd>Hg， and the average germination index of plant seeds was 0.74， all indicators meet the limit requirements of the NY/T 525—2021 Organic Fertilizer. The quality of composting products was qualified， and could be used to improve soil fertility.

Key words: kitchen waste, compost products, plant seed germination index, heavy metal, nutrient