Environmental Impact and Economic Benefits Analysis of Composting Apple Pruning Branches Based on Life Cycle Assessment
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NETL
NSTL
维普
万方数据
利用生命周期评价方法分析了苹果树修剪枝条堆肥处理模式的环境影响,并分析其肥料化潜力与经济效益,对枝条处理各环节进行污染物排放评估,为苹果树修剪枝条肥料化处理工艺的改进提供参考.研究结果表明,苹果树修剪枝条堆肥处理过程中,每处理功能单位苹果树枝条产生污染物总量 76.021 9 kg,其中二氧化碳排放量占总排放量的96.79%,全球变暖对环境的影响高于酸化与富营养化;粉碎包装、熟化灭菌、粉碎和堆肥阶段产生的污染物气体排放量分别占总排放量的 38.26%、27.22%、21.04%和 10.85%;苹果树修剪枝条堆肥处理的生产成本 515元/t,经济效益 285元/t,每处理1 t苹果枝条生产的有机肥,可替代尿素、过磷酸钙、硫酸钾的量分别为61.3、120.0和13.2 kg.
In order to provide reference for improvement of apple pruning branch fertilization treatment process,environmental impact of apple pruning branch fermentation composting treatment mode by using life cycle assessment was analyzed,and fertilization potential,economic benefits and pollutant emissions of each step of branch treatment were assessed.Results showed that,total amount of pollut-ants produced per functional unit of apple pruned branches treatment was 76.0219 kg,CO2 emissions accounted for 96.79%of total emis-sions,which led to a higher impact of global warming on environment than acidification and eutrophication.Pollutant gas emissions from crushing and packing process,autoclaving of materials,branch crushing and composting process stages accounted for 38.26%,27.22%,21.04%and 10.85%of total emissions respectively.Treatment cost of apple pruning branch was 515 yuan/t and economic be-nefit was 285 yuan/t.Organic fertilizer produced by processing 1 t of apple paper strips could replace urea,calcium superphosphate and potassium sulphate by 61.3,120 and 13.2 kg,respectively.
life cycle assessmentapple treecompostingenvironmental impact potentialeconomic benefitfertilization potential
NETL
NSTL
维普
万方数据
