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Slow sand filter

305 bytes added, 04:18, 19 October 2017

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__NOTOC__ <small{{Language-title />box|english_link= Slow sand filter | french_link= Coming soon | spanish_link= Coming soon | hindi_link= Coming soon | malayalam_link= Coming soon | tamil_link= Coming soon | swahili_link=coming soon | korean_link= Coming soon | chinese_link=缓沙过滤器 | indonesian_link= Coming soon | japanese_link= Coming soon }}

[[Image:Icon_biosand.png|right|80px]]

[[Image:slow sand filter.jpg|thumb|right|200px|EELRCA water project: slow sand filter, Yakbe, CAR. Photo: [http://www.travelblog.org/Photos/2411254 Travelblog.org]]]

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