Location: Faridpur (23°37'20.3"N 89°50'44.1"E) |
Designed Capacity: 42 cum/day |
“Access to Toilet for All” is a great success for Faridpur, Bangladesh, though safe management of human excreta is still under prioritisation for the Faridpur government. Pits account to 68% and septic tanks account to 32%. The plant was built to tackle prevailing FS mis-management issue in Faridpur city. The compost developed after treatment is sold to the farmers. |
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Raw faecal sludge (FS) collected from source is 24 cum/day of which 6 cum/day is discharged into planted drying bed (PDB) and 18 cum/day is discharged into unplanted drying bed (UPDB). Each day, only a single bed of PDB and UPDB is filled with FS. The UPDB is filled with its full carrying capacity. Post solid-liquid separation at UPDB, semi solid sludge from it is treated in a partial aerobic unplanted setup to treat at or more than 54 degrees for 2 weeks. While the leachate is treated in a cesspool by algae and bacteria growth in batches. |
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Each day, one bed of the PDB is filled with sludge and allowed to dry but during the site visit it was found to be PDB is filled once in a week. The semi solid sludge remaining post treatment from PDB and UPDB is used to prepare compost. The treated leachate from the cesspool is disinfected and stored at a maturation pond. Retention time at maturation pond is 12 days and finally reused in the agriculture fields in the vicinity |
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Abdullah-Al-Mamun |
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