Graded backwashing mixed filler autotrophic denitrification biological filter
The utility model discloses a graded backwashing mixed filler autotrophic denitrification biological filter which comprises a filter body, and a floating water layer, a mixed filler layer, a biological filler layer, a supporting layer, a filter brick layer and a clear water layer are sequentially ar...
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Main Authors | , , |
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Format | Patent |
Language | Chinese English |
Published |
25.04.2023
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Subjects | |
Online Access | Get full text |
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Summary: | The utility model discloses a graded backwashing mixed filler autotrophic denitrification biological filter which comprises a filter body, and a floating water layer, a mixed filler layer, a biological filler layer, a supporting layer, a filter brick layer and a clear water layer are sequentially arranged in the filter body from top to bottom; the floating layer at the top of the tank body is connected with a water inlet system; the clear water layer at the bottom of the tank body is connected with a clear water discharge pipe; the tank body is connected with a graded backwashing system, and the graded backwashing system comprises a first-stage water inlet pipeline, a second-stage water inlet pipeline, a first-stage blow-off pipeline, a second-stage blow-off pipeline and a gas washing pipeline which are sequentially arranged on the tank body from bottom to top; the filter tank is an improved autotrophic biological filter tank capable of removing nitrate nitrogen in sewage, mainly adopts elemental sulfur, lime |
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Bibliography: | Application Number: CN202223187206U |