کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4996793 | 1368274 | 2017 | 9 صفحه PDF | دانلود رایگان |
- Three small-scale AD wastewater systems were tested in Haiti for CH4 and treatment.
- Total coliforms, E. coli, and COD were reduced by 99.1, 98.5, and 93.6%, respectively.
- Methane production was 0.135Â L/g VS, equating 2.29Â L/user based on 31Â users/d.
- Survey participants (n = 573) were willing to pay $0.10-0.30 per use for AD facilities.
- The investment cost for a shared toilet AD system was $16-$47 (USD) per person.
Three tubular anaerobic digestion (AD) systems were installed in Haiti to treat black water (toilet-based wastewater), including a three cell 36 m3 clinic digester (CD), a two cell 2 m3 hotel digester (HD), and a three-cell 3 m3 farm digester (FD) for worker use. During digestion, total coliforms were reduced by 99.1%, E. coli by 98.5%, and chemical oxygen demand (COD) by 93.6%. Nutrients in the effluent averaged 99.4 mg/L NH4+ and 10.6 mg/L PO42â, producing an effective organic fertilizer. Average biogas production in CD was 108 L/d, with 65.4% CH4. Survey participants (n = 573) were willing to pay $0.10-0.30 per use for sanitation facilities. Seventy-two percent of the rural population surveyed in Cange, Haiti lacked access to improved sanitation due to financial constraints. The economic analysis calculated an investment cost for a shared toilet AD systems of $16-$47 (USD) per person based on daily use at design capacity.
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Journal: Bioresource Technology - Volume 245, Part A, December 2017, Pages 801-809