Department of Civil Engineering, Faculty of Engineering and the Built Environment, Tshwane University of Technology, Pretoria, South Africa.
Waste Manag Res. 2011 Nov;29(11):1222-31. doi: 10.1177/0734242X10385747. Epub 2010 Oct 11.
Excessive MSW production is a growing management problem for cities in developing countries, such as South Africa. This study addresses these challenges with particular focus on the City of Tshwane. A major problem in Tshwane is that all the MSW generated in the city, including garden waste, is currently being landfilled. A waste stream analysis of Tshwane reveals the largest fraction of MSW is organic and biodegradable, and therefore suitable for compost production. The study proposes that Tshwane will have to address composting the biodegradable fraction of the MSW stream. This study attempts to understand the economics of composting practices in Tshwane, whether composting in Tshwane is financially viable. A comparative study, applying the dome aeration technology on a conventional static windrow, was conducted with the objective of investigating and proposing alternative improved composting technologies for green waste. Although the study focused on Tshwane, it can be argued that the findings could be implemented in any other South African municipality, and even implemented in other emerging countries.
城市固体废物（MSW）产量过多是发展中国家城市（如南非）面临的一个日益严峻的管理问题。本研究以南非城市比勒陀利亚（Tshwane）为例，重点探讨了这一挑战。比勒陀利亚存在的一个主要问题是，该市产生的所有城市固体废物（包括庭院垃圾）目前都被填埋处理。对比勒陀利亚的废物流分析表明，最大的废物份额是有机的和可生物降解的，因此适合堆肥生产。研究提出，比勒陀利亚将不得不解决可生物降解废物流的堆肥问题。本研究试图了解比勒陀利亚堆肥实践的经济性，即堆肥在财务上是否可行。进行了一项比较研究，即在传统静态条垛上应用穹顶曝气技术，目的是研究和提出替代的绿色废物改良堆肥技术。尽管本研究重点关注比勒陀利亚，但可以认为，研究结果可以在南非的任何其他城市实施，甚至可以在其他新兴国家实施。
