Denitrification filter tank

A denitrification filter and backwashing technology, which is applied in the field of denitrification filter, can solve the problems of low biofilm concentration in the filter layer, low denitrification load, and high investment in active sand filter, so as to simplify management complexity and reduce Operating cost, effect of improving effluent water quality
CN113402022AInactive Publication Date: 2021-09-17贾占付
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
贾占付
Publication Date
2021-09-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a denitrification filter tank which comprises a denitrification filter tank body, a water inlet pipe, a mixing tank, a water distribution channel, a water distribution weir, a water outlet channel, a back-washing air blower, a back-washing water pump and the like. According to the denitrification filter tank provided by the invention, uniform water distribution of the denitrification filter tank body is realized through the design of the water distribution channel, the water distribution weir and a gate, and an input water source is uniformly distributed; and by arranging a feed forward-feedback composite control system, accurate feeding of a carbon source is achieved, the operation cost is reduced, and the management complexity is simplified. In addition, the problems of filler hardening, low concentration of a biological membrane of a filter material layer, low denitrification load, easy generation of air resistance and the like which exist for a long time in the prior art are solved, and the effluent quality is greatly improved.
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Description

technical field

[0001] The invention belongs to the technical field of sewage treatment, in particular to a denitrification filter. Background technique

[0002] In recent years, with the national and local emphasis on pollution control, the country has stricter requirements on sewage treatment standards, and the implementation of discharge standards for sewage treatment plants in various places has gradually changed from "Pollutant Discharge Standards for Urban Sewage Treatment Plants" (GB18918-2002) Level B is raised to Level 1 A standard, or surface level IV water body standard or even special discharge limit standard. High discharge standards are mainly due to stricter control of organic matter, nitrogen and phosphorus in sewage treatment plants. Therefore, it is necessary to focus on or improve the settings of advanced treatment processes in the transformation, especially the application of denitrification filters.

[0003] Denitrification filter is a filter with denit...

Claims

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