Optimisation and costing of faecal sludge management options for Lusaka's informal settlements
Optimisation and costing of faecal sludge management options for Lusaka's informal settlements
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DOI：
10.1039/c5ew00179j
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发表时间：
2016-01
影响因子：
4.3
通讯作者：
R. Kennedy-Walker;T. Holderness;D. Alderson;J. Amezaga;C. Paterson
中科院分区：
文献类型：
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作者：
R. Kennedy-Walker;T. Holderness;D. Alderson;J. Amezaga;C. Paterson
粪便污泥管理（FSM）作为现场系统捕获的粪便污泥（FS）安全管理（收集，运输和某些情况下的处理和最终使用/安全处置）的技术解决方案，在发展中国家正在取得牵引力。虽然确实存在一些办法，但总体而言，可用于支持决策者在实地落实密克罗尼西亚联邦服务的工具、数据和实例有限。本研究旨在通过介绍为赞比亚共和国卢萨卡的两个非正规住区制定的长期成本计算方法，解决这些部门的一些局限性。该方法比较了25年设计期内与一些可行的固定基础设施和运输技术方案相关的成本。在分析的空间拓扑工具被用来模拟拟议的FSM网络，并允许最少的时间运输的路径被确定。然后，这被用来计算净现值和平均增量成本，为七个不同的FSM方案，超过25年的设计寿命。研究结果表明，密克罗尼西亚联邦可以为卢萨卡最贫穷社区提供负担得起的卫生服务。所进行的研究旨在支持卢萨卡的规划者，但也提出了一些可能有益于更广泛的卫生部门的方法。
Faecal Sludge Management (FSM) is achieving traction in developing countries as a technical solution for the safe management (collection, transportation and in some cases treatment and end-use/safe disposal) of Faecal Sludge (FS) captured by onsite systems. Whilst some approaches do exist the overall availability of tools, data and practical examples to support decision makers in the implementation of FSM services on the ground is limited. This study aims to address some of these sector limitations by presenting a long-term costing methodology that was developed for two informal settlements in Lusaka, The Republic of Zambia. The approach compares the costs associated with a number of feasible fixed infrastructure and transportation technology scenarios over a 25 year design period. Within the analysis a spatio-topological tool was utilised to model proposed FSM networks and allowed the path of least-time transportation to be identified. This was then used to calculate Net Present Value and Average Incremental Cost, for seven different FSM scenarios, over a 25 year design life. The results of the study show that FSM could provide an affordable solution for the provision of sanitation services to Lusaka's poorest communities. The research conducted aims to support planners in Lusaka but also presents a number of methodologies that could be beneficial to the wider sanitation sector.