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低收入住区的粪便污泥管理:肯尼亚纳库鲁案例研究。

Fecal Sludge Management in Low Income Settlements: Case Study of Nakuru, Kenya.

机构信息

Urbanization and Well-Being Unit, African Population and Health Research Center, Nairobi, Kenya.

出版信息

Front Public Health. 2021 Oct 11;9:750309. doi: 10.3389/fpubh.2021.750309. eCollection 2021.

DOI:10.3389/fpubh.2021.750309
PMID:34708018
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8542775/
Abstract

In order to meet the sustainable development goals targets of sanitation, countries aim to increase access to safely managed sanitation services for its citizens. Safely managed sanitation services refers to improved sanitation technologies that are not shared with other households and where excreta is treated and disposed; or stored, transported and treated off-site. In most Sub-Saharan Africa (SSA) countries, on-site sanitation facilities such as latrines and septic tanks are common, with low-income urban settlements mainly using pit latrines. However, little is documented about the management of sludge from these facilities, especially in low income settlements in secondary and emerging cities. This lack of data is a major hindrance to public health, development and planning efforts by governments and planning agencies. This study specifically assesses practices and challenges along the sanitation value chain related to containment, emptying, transportation, treatment and recycling of fecal sludge. The study was carried out in low income settlements in Nakuru, a secondary city in Kenya. Over half the population in Nakuru live in low income areas and majority of these residents use pit latrines. A case study design was selected for this study and data was collected using qualitative methods. Data was collected through In-depth interviews and Focus Group Discussions using in depth interview guide and focus group discussion guides that had questions on sanitation practices along the value chain, challenges, opportunities available, and recommendations for improvement. Analysis was done through content analysis by reading the transcripts multiple times to gain a sense of the flow of the discussion. Thereafter, coding was done by following emergent issues and thereafter categories were identified which formed the basis for providing a picture of FWM practices in the settlements. On site sanitation facilities are dominant in the settlements, but they are few and are shared by several households. These facilities were unclean, and they filled up at a fast rate because of the high number of users. The latrines were emptied by manual emptiers who used mechanized equipment but complemented with manual emptying using buckets. Sludge was transported to a central collection point using large and small scale means of transportation, before transfer to the treatment site for final treatment and disposal. Various stakeholders are involved in capacity building of emptiers as well as in the transportation, treatment and disposal of fecal sludge in the settlements. Challenges along the stages of the value chain included negative community perceptions and attitudes toward fecal sludge management. The results highlight the need to address the challenges along the chain by involvement of state and non-state actors. Low income areas have high populations and thus contribute huge amounts of fecal sludge. Deliberate efforts to consolidate such data from low income areas will result in availability of data, and informed decision making for stakeholders at national and international levels.

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9f49/8542775/d7f2d85e2a65/fpubh-09-750309-g0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9f49/8542775/d7f2d85e2a65/fpubh-09-750309-g0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9f49/8542775/d7f2d85e2a65/fpubh-09-750309-g0001.jpg
摘要

为了实现卫生方面的可持续发展目标,各国旨在增加其公民获得安全管理的环境卫生服务的机会。安全管理的环境卫生服务是指使用不与其他家庭共享的改良环境卫生技术,对粪便进行处理和处置;或在现场以外进行储存、运输和处理。在撒哈拉以南非洲(SSA)的大多数国家,现场环境卫生设施(如厕所和化粪池)很常见,低收入城市住区主要使用坑式厕所。然而,关于这些设施的污泥管理,尤其是在二级和新兴城市的低收入住区,很少有记录。缺乏数据是政府和规划机构在公共卫生、发展和规划方面的主要障碍。本研究专门评估了与粪便污泥的封存、清空、运输、处理和再利用相关的环境卫生价值链上的做法和挑战。该研究在肯尼亚二级城市纳库鲁的低收入住区进行。纳库鲁超过一半的人口居住在低收入地区,其中大多数居民使用坑式厕所。本研究采用案例研究设计,使用定性方法收集数据。通过深入访谈和焦点小组讨论收集数据,使用深入访谈指南和焦点小组讨论指南,这些指南涵盖了价值链上的环境卫生做法、挑战、可用机会以及改进建议等问题。通过多次阅读转录本进行内容分析,以了解讨论的流程。然后,通过遵循新出现的问题进行编码,然后确定类别,这为提供住区粪便管理的全貌提供了基础。现场环境卫生设施在住区中占主导地位,但数量很少,且由几个家庭共用。这些设施不干净,由于使用者数量多,填充速度很快。厕所由使用机械化设备的人工清掏工清空,但也用桶进行补充。使用大型和小型运输工具将污泥运送到一个集中的收集点,然后转移到处理地点进行最终处理和处置。在住区中,各种利益相关者都参与了清掏工的能力建设以及粪便污泥的运输、处理和处置。价值链各个阶段面临的挑战包括社区对粪便污泥管理的负面看法和态度。研究结果强调,需要通过州和非州行为体的参与来应对整个链条上的挑战。低收入地区人口众多,因此产生大量粪便污泥。从低收入地区有意收集此类数据将导致国家和国际各级利益相关者能够获得数据,并做出明智的决策。

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本文引用的文献

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Int J Environ Res Public Health. 2019 Nov 27;16(23):4738. doi: 10.3390/ijerph16234738.
2
Pit latrine fill-up rates: variation determinants and public health implications in informal settlements, Nakuru-Kenya.坑式厕所填满率:内罗毕-肯尼亚非正规住区的变化决定因素及其对公共卫生的影响。
BMC Public Health. 2019 Jan 15;19(1):68. doi: 10.1186/s12889-019-6403-3.
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Towards sustainable sanitation management: Establishing the costs and willingness to pay for emptying and transporting sludge in rural districts with high rates of access to latrines.
迈向可持续卫生管理:确定在高比例使用厕所的农村地区进行污泥清掏和运输的成本及支付意愿。
PLoS One. 2017 Mar 21;12(3):e0171735. doi: 10.1371/journal.pone.0171735. eCollection 2017.
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