中国磷资源产业中磷元素循环的投入产出分析

为实现磷资源产业可持续发展,以中国磷资源产业为对象,运用投入产出分析(inpu t-ou tpu t ana lys is,IOA)方法对其整个生命周期的元素代谢和物质循环进行定量描述和分析。总结磷元素高效循环利用的技术手段和措施,提出生产智能控缓释化肥、减少含磷农药使用量、减少含磷洗涤剂使用量、回收人畜粪便生产有机肥料和回收污水中的磷等措施构成6个不同方案改善该系统的物质利用水平,并对元素循环效率等指标进行分析比较。研究结果表明,合理选取、综合采用先进的循环经济技术手段,可以提高中国磷资源产业物质利用水平和元素循环效率。

Input-output analysis of the phosphorus recycle of the Chinese phosphor industry

The material flow of phosphorus was analyzed using the Input-Output Analysis(IOA) method to improve sustainable development of the Chinese phosphor industry.Five effective techniques were identified to improve the industry including producing controlled release fertilizers and phosphor recover from rural latrines and city sewage to improve the utilization and cycle efficiency of the phosphor industry.Quantitative indices such as cycle efficiencies and flow path lengths were calculated for these schemes.The results show that the current cycle efficiency and material utilization can be significantly improved by these recycling techniques.