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首页> 外文期刊>Environmental Science & Technology >Capital and Operating Costs of Full-Scale Fecal Sludge Management and Wastewater Treatment Systems in Dakar, Senegal
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Capital and Operating Costs of Full-Scale Fecal Sludge Management and Wastewater Treatment Systems in Dakar, Senegal

机译：塞内加尔达喀尔大规模粪便污泥管理和废水处理系统的资本和运营成本

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摘要

A financial comparison of a parallel sewer based (SB) system with activated sludge, and a fecal sludge management (FSM) system with onsite septic tanks, collection and transport (C&T) trucks, and drying beds was conducted. The annualized capital for the SB ($42.66 capita~(-1) year~(-1)) was ten times higher than the FSM ($4.05 capita~(-1) year~(-1)), the annual operating cost for the SB ($11.98 capita~(-1) year~(-1)) was 1.5 times higher than the FSM ($7.58 capita~(-1) year~(-1)), and the combined capital and operating for the SB ($54.64 capita~(-1) year~(-1)) was five times higher than FSM ($11.63 capita~(-1) year~(-1)). In Dakar, costs for SB are almost entirely borne by the sanitation utility, with only 6% of the annualized cost borne by users of the system. In addition to costing less overall, FSM operates with a different business model, with costs spread among households, private companies, and the utility. Hence, SB was 40 times more expensive to implement for the utility than FSM. However, the majority of FSM costs are borne at the household level and are inequitable. The results of the study illustrate that in low-income countries, vast improvements in sanitation can be affordable when employing FSM, whereas SB systems are prohibitively expensive.
机译：对带有活性污泥的平行下水道（SB）系统与带有现场化粪池，收集和运输（C＆T）卡车以及干燥床的粪便污泥管理（FSM）系统进行了财务比较。 SB的年化资本（人均$ 42.66〜（-1）年〜（-1））比FSM（人均$ 4.05〜（-1）年〜（-1））高十倍。 SB（人均$ 11.98〜（-1）年〜（-1））比FSM（人均$ 7.58〜（-1）年〜（-1））高1.5倍，SB的总资本和运营成本（$ 54.64）人均〜（-1）年〜（-1））是FSM（11.63美元人均〜（-1）年〜（-1））的五倍。在达喀尔，SB的成本几乎完全由环卫公用事业承担，而年度费用中只有6％由系统用户承担。除了降低整体成本外，FSM还以不同的商业模式运营，成本分布在家庭，私人公司和公用事业之间。因此，对于公用事业而言，SB的实现成本是FSM的40倍。但是，大多数FSM成本均由家庭承担，并且是不公平的。研究结果表明，在低收入国家，采用FSM可以负担得起大幅度改善卫生设施的费用，而SB系统的费用却过高。

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  • 来源
    《Environmental Science & Technology》 |2012年第7期|p.3705-3711|共7页
  • 作者

    Pierre-Henri Dodane; Mbaye Mbeguere; Ousmane Sow; Linda Strande;

  • 作者单位

    Toilettes du Monde, 15, avenue Paul Laurens, 26 110 Nyons, France;

    Eawag, Swiss Federal Institute of Aquatic Science and Technology, Sandec, Department of Water and Sanitation in Developing Countries P.O. Box 611, Ueberlandstrasse 133, 8600 Duebendorf, Switzerland,Office National de rAssainissement du Senegal, Cite TP SOM, n° 4, Hann, BP 13428, Dakar, Senegal;

    Office National de rAssainissement du Senegal, Cite TP SOM, n° 4, Hann, BP 13428, Dakar, Senegal;

    Eawag, Swiss Federal Institute of Aquatic Science and Technology, Sandec, Department of Water and Sanitation in Developing Countries P.O. Box 611, Ueberlandstrasse 133, 8600 Duebendorf, Switzerland;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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