澳大利亚、新西兰、新加坡废弃物资源化利用对中国的启示

    Inspiration of waste resource utilization in Australia, New Zealand, and Singapore for China

    • 摘要: 针对中国废弃物资源化利用污染物排放高、机械化水平低等问题,该文在实地调研的基础上,梳理了澳大利亚、新西兰、新加坡等3个国家的废弃物处理技术体系,总结了3个国家在技术创新、平台建设、人才培养、推广应用等方面的典型经验和做法,目的是为中国农业废弃物清洁高效利用提供借鉴。澳大利亚、新西兰是世界重要的农业大国,均建立了较为完善的农业废弃物循环利用体系,澳大利亚构建了“资源化+”技术体系,新西兰构建了“源头减量+过程控制”协同处理技术体系,新加坡探索构建了城市生活垃圾厌氧发酵资源化新技术,该研究从科研团队协作、科研投入、成果推广应用等方面提出对策建议,助力推进我国废弃物资源化利用和循环农业发展。

       

      Abstract: A large amount of agricultural waste has been produced in the process of production and living. Agricultural waste has enormous biological potential, referred to as a "misplaced resource". It is in high demand for an important measure to promote the utilization of agricultural waste resources for the prevention and control of non-point source pollution under the living environment in rural revitalization. A series of regulations and standards have been introduced to fully utilize straw, livestock, and poultry manure in recent years. Planting and raising are combined into a cycle from "treatment" to "reuse". However, China's agricultural waste reuse has just started, compared with the developed countries. Crop straws and domestic manure are either returned to the field or used as low-value-added feed and fertilizer in China, whereas the high-value-added use has not taken shape yet. Existing policies and regulations cannot fully meet the demand at present, due to mismatched planting and animal raising, under-developed technology, and equipment for manure reuse. It is urgent to require innovative technology, in order to reduce the severe nutrient loss of organic fertilizer and insufficient use of remaining nutrients in the field. It is still lacking research on the treatment of agricultural waste resources. The unreasonable disposal of agricultural waste has caused serious environmental pollution and a large amount of resource waste. The treatment of agricultural waste has been confined to better accelerate modern agriculture in rural areas. As important agricultural countries in the world, Australia and New Zealand have established relatively mature recycling systems for agricultural waste. This study aims to sort out the related technology systems in Australia, New Zealand, and Singapore using field research. A summary was formed from their typical experiences and practices in innovation, platform building, talent training, and application. A strong reference was then provided for the highly efficient reuse of waste in China. As such, the pollutant emission was reduced to improve the mechanization concerning waste reuse. Australia formed a technology system of "Resource +"; New Zealand was a synergistic treatment system of "Waste Source Reduction + Process Control"; and Singapore shared a new anaerobic fermentation for turning municipal domestic waste into resources. The key technologies were reviewed for the waste reused as a resource, equipment for manure returning to the field, and local treatment of manure for small and medium-sized animal-raising farms. The innovation platform was improved to establish a host of world-class laboratories for green agriculture. The manure returning to the field was enhanced to combine the planting and animal raising, in order to promote the integrated application in green agriculture.

       

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