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Sanitation technology options in informal settlement: a system dynamics approach

机译：非正式住区的卫生技术选择：系统动力学方法

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Provision of sanitation services to urban informal settlement is one of the challenges that the urban planners and decision makers are face with in the current era. High population growth and lack of legal status in informal settlements makes it challenging to improve the level of sanitation. The question then is whether there are possible technology options that can be utilized to achieve sanitation crisis in informal settlements. This paper thus delves into the dark and complex world of the sanitation crisis in informal settlements. Using system dynamics approach, it describes the key elements in the sanitation provision in informal settlements, and specifically, in the context of Enkanini, an illegal informal settlement in Stellenbosch. The system dynamics model demonstrates differences between four sanitation technologies, namely: pour flush; ventilated improved pit latrine; compost toilet; and regular toilet. The results show that there is a long-term benefit from waterborne sanitation, as well as rapid improvement in sanitation from cheaper options of a compost toilet and ventilated improved pit latrine. The pour flush toilet and ventilated improved pit latrine occupied the beneficial middle ground of minimal investment for decent output in sanitation improvement as well as improvement of the sanitation experience.
机译：为城市非正式住区提供卫生服务是当前时代城市规划者和决策者面临的挑战之一。人口的高速增长和非正式定居点缺乏法律地位使得提高卫生水平具有挑战性。然后的问题是，是否存在可以用于解决非正式住区卫生危机的可能技术选择。因此，本文探讨了非正式住区中环境卫生危机的黑暗和复杂世界。它使用系统动力学方法，描述了非正式定居点的卫生设施中的关键要素，特别是在斯泰伦博斯的一个非法非正式定居点恩卡尼尼的背景下。系统动力学模型证明了四种卫生技术之间的差异，即：冲洗;通风改进的坑厕;堆肥厕所和普通的厕所。结果表明，水性卫生可长期受益，而堆肥马桶和通风改进的坑厕更便宜则可带来卫生条件的快速改善。倾倒式抽水马桶和通风良好的蹲坑式厕所占据了有利的中间地带，该中间地带以最小的投资来改善卫生条件并改善卫生经验，从而获得可观的产出。

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