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Designing Iron‐Amended Biosand Filters for Decentralized Safe Drinking Water Provision
Author(s) -
Noubactep Chicgoua,
Temgoua Emile,
Rahman Mohammad A.
Publication year - 2012
Publication title -
clean – soil, air, water
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 66
eISSN - 1863-0669
pISSN - 1863-0650
DOI - 10.1002/clen.201100620
Subject(s) - sizing , layer (electronics) , environmental science , waste management , environmental engineering , materials science , chemistry , nanotechnology , engineering , organic chemistry
There are ongoing efforts to render conventional biosand filters (BSF) more efficient for safe drinking water provision. One promising option is to amend BSF with a reactive layer containing metallic iron (Fe 0 ). The present communication presents some conceptual options for efficient Fe 0 ‐amended BSF in its fourth generation. It is shown that a second fine‐sand layer should be placed downwards from the Fe 0 ‐reactive layer to capture dissolved iron. This second fine‐sand layer could advantageously contain adsorbing materials (e.g. activated carbons, wooden charcoals). An approach for sizing the Fe 0 ‐reactive layer is suggested based on 3 kg Fe 0 per filter. Working with the same Fe 0 load will ease comparison of results with different materials and the scaling up of household BSF to large scale community slow sand filters (SSF).