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trickling filter |
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trickling filter [′trik·liŋ ‚fil·tər]
(civil engineering) A bed of broken rock or other coarse aggregate onto which sewage or industrial waste is sprayed intermittently and allowed to trickle through, leaving organic matter on the surface of the rocks, where it is oxidized and removed by biological growths. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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No references found | Trickling filters are where the settled sewage liquor is spread onto the surface of a deep bed made of carbonized coal, limestone chips or a specially fabricated plastic media that has high surface areas to support the biofilms that form. Our findings show that for hydrogen sulfide odor control at wastewater-treatment plants, you can convert chemical scrubbers to biological trickling filters and still have the same treatment capacity much cheaper and safer. Conventional processes such as activated sludge, trickling filters, and coagulation tanks (in the treatment of water and wastewater) demand heavy machinery that necessitates the use of skilled personnel for operation and maintenance. |
Trickling filters |
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