Shallow-layer biological filter disc and filtration system composed of filter discs
A filtration system and biological filtration technology, applied in the field of biological filter discs, can solve the problems of expensive equipment purchase, long construction period, high investment cost, etc., and achieve the effects of flexible and convenient combination, short construction period and high treatment efficiency
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[0021] like Figure 1 ~ Figure 2 As shown, the shallow biofilter disc includes a disc body 1, and the middle cross frame of the disc body 1 has a partition plate 2 that divides the interior of the disc body 1 into a first section 10 and a second section 11. The interval 10 and the second zone are distributed left and right and the bottoms of the two are connected. The first interval 10 is divided into an aerobic layer 4 and a facultative layer 5 from top to bottom, and the second interval 11 is sequentially divided from top to bottom. Divided into filter layer 8, denitrification layer 7 and anaerobic layer 6, the aerobic layer 4, facultative layer 5, anaerobic layer 6 and denitrification layer 7 are arranged with film-hanging fillers with gradually smaller gaps, preferably Water distribution pipes are also arranged in the oxygen layer 4 , filter cotton is filled in the filter layer 8 , and a row of overflow ports 9 is arranged on the side wall of the filter layer 8 . The shal...
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