Nitrogen and phosphorus removal bio-trickling filter by artificially strengthening natural ventilation

A biological trickling filter and natural ventilation technology, applied in the field of environmental protection, can solve the problems of inconspicuous aerobic, anoxic and anaerobic environments, and the difficulty of obtaining steel slag fillers, etc., to achieve improved oxygen supply effect, simple structure, and low cost Effect

Inactive Publication Date: 2012-07-25
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the steel slag filler used in this equipment is difficult to obtain, and the internal aerobic, anoxic and anaerobic environments are not obvious

Method used

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  • Nitrogen and phosphorus removal bio-trickling filter by artificially strengthening natural ventilation
  • Nitrogen and phosphorus removal bio-trickling filter by artificially strengthening natural ventilation

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] In the embodiment shown in the drawings, it can be seen that the top of the biological trickling filter body 1 is provided with a non-powered ventilation device 4, and the top is sealed except for the opening of the non-powered ventilation device 4. The unpowered ventilation device 4 relies on the wind force of any wind direction and the temperature difference between the inside of the pool body 1 and the outside of the pool body 1 to ventilate the filter. The filter material is filled in the grid frame 11 in layers, and is divided into four layers from top to bottom. There are ventilation holes on the pool walls of the aerobic zone 5 and the facultative oxygen zone 6. According to different oxygen supply requirements, the number of ventilation holes in the aerobic zone 5 is more than that of the facultative oxygen zone 6. The particle size of the filter materi...

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Abstract

The invention relates to a nitrogen and phosphorus removal bio-trickling filter by artificially strengthening natural ventilation, belonging to the environmental protection technical field. The bio-trickling filter comprises a filter body, a water inlet and distribution pipe, a water collection and outlet pipe, an unpowered ventilating device, a bearing layer and a filter material layer. The bio-trickling filter is characterized in that the filter material layer is positioned in the filter body; the bearing layer is positioned at the bottom of the filter material layer and is internally equipped with the water collection and outlet pipe; the water inlet and distribution pipe is positioned above the filter material layer; the unpowered ventilating device is arranged on the top of the filter body; and the filter material layer consists of an aerobic area, an facultative area, an anoxic area and an anaerobic area from top to bottom. In the invention, by strengthening the natural ventilation strength through the omnidirectional unpowered ventilating device on the top of the bio-trickling filter and utilizing the number change of the open pores on side walls of the filter and the particle size change of a filter material from top to bottom, the ventilating conditions of different areas in a reactor are controlled and the ventilation rate is adjusted so as to form the integrated aerobic, facultative, anoxic and anaerobic bio-trickling filter, thus achieving the purpose of removing organic matters, nitrogen and phosphorus.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and relates to sewage treatment technology, in particular to an artificially enhanced natural ventilation biological trickling filter for denitrification and phosphorus removal. Background technique [0002] Biotrickling filter is a traditional process of biofilm treatment of sewage. Its principle is to use the biofilm fixed on the carrier (filter material) to absorb and intercept organic pollutants in sewage and decompose the pollutants. It has the advantages of stable treatment effect, less excess sludge generation, and strong impact load resistance. In recent years, with the development of new technology and new filter material, biological trickling filter has become a widely used biofilm sewage treatment process. [0003] In addition to the biological aerated filter, the oxygen required by the microorganisms in the traditional biological trickling filter is generally supplie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30
Inventor 王峰杨海真潘琦胡鸿
Owner TONGJI UNIV
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