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上流式粗效过滤器

336 bytes added, 04:22, 19 October 2017
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{{Language-box|english_link=Upflow roughing 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=上流式粗效过滤器 | indonesian_link= Coming soon | japanese_link= Coming soon }}
 
[[Image:upflow icon.png|right|80px]]
[[Image:roughing filter 2.jpg|thumb|right|200px|卧式粗效过滤器与慢砂过滤。桑德班斯水过滤装置，西孟加拉邦. 照片: [http://www.wherevertheneed.org.in/projects/indian-projects/sunderbans-water-unit/ Wherevertheneed.org]]]
[[Image:upflow roughing filter.jpg|thumb|right|200px|上流式粗效过滤器. <br>图片：世界卫生组织.]]
[[Image:roughing filter chart.jpg|thumb|right|200px|筛选分类. 图表: [http://www.sandec.ch/index_EN SANDEC.]]]
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粗效过滤器通常用于预处理水，去除悬浮的固体，从而可以快速的阻挡慢砂渗入。粗效过滤器还可大大减少受众病原体的数量，以及铁和锰的数量。许多不同类型的粗效过滤器有不同的流动方向 （下流式、 上流式和水平式过滤器），它们过滤不同类型的介质 （例如砂石、 砾石、 椰子壳纤维）。与下流式和平流式过滤器相比，上流式粗效过滤器，相对比较便宜且易于清洁。
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