Effects of Temperature and Substrate Composition on Aerobic Composting of Urban Landscape Waste and Chicken Manure Using Water Bath Method
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    Abstract:

    [Objective] The effects of temperature and material ratio on urban landscaping waste and chicken manure water bath aerobic composting were studied in order to provide technical guidance and theoretical basis for large-scale aerobic composting.[Methods] A water bath temperature-controlled aerobic composting device was constructed with water bath incubator, air pump, gas rotameter, thermometer, fermentation bottle and a gas bottle. Water bath composting with different ratios of urban gardening waste to chicken manure of 2:3, 2:1, 3:1, and 5:1 (named A, B, C, and D, respectively) was set.[Results] The optimal temperature range of microbial metabolic activity was 50~55℃. The degradation of organic matter by microbes was significantly inhibited at temperature ≥ 55℃. All four treatments experienced the heating phase, high temperature phase, cooling and medium temperature phases. The nitrogen loss rate in treatments A-D was 47.11%±0.55%, 63.82%±1.05%, and 53.43%±0.71%, and 36.38%±0.83%, respectively. Obviously, the highest nitrogen retention was achieved in treatment D. The seed germination rate and germination index were also evaluated. The germination rate of composting products in treatments A-D was 96.7%±2.11%, 96.7%±2.25%, 84.4%±1.98% and 96.7%±2.06%, respectively, and all of which reached the criteria of maturity (≥ 80%).[Conclusion] The optimum temperature of urban landscaping waste and aerobic compost with chicken manure water bath was 50~55℃, and the nitrogen retention was the highest in group D. The compost products of the four groups all reached the evaluation standard of maturity.

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杨海君,许云海,肖为,刘亚宾,金红玉,兰时乐,谭菊.温度和物料配比对城市园林绿化废物与鸡粪水浴法好氧堆肥的影响[J].水土保持通报英文版,2019,39(6):35-43,51

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History
  • Received:June 24,2019
  • Revised:July 28,2019
  • Adopted:
  • Online: January 17,2020
  • Published: