Sulfur autotrophic denitrification biofilter, sewage treatment system and treatment method thereof

A technology of sewage treatment system and biological filter, which is applied in the direction of biological water/sewage treatment, water/sludge/sewage treatment, anaerobic digestion treatment, etc. It can solve the problems of high nitrogen load and poor denitrification effect of sewage

Inactive Publication Date: 2021-05-04
HEBEI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] One of the purposes of the present invention is to provide a sulfur autotrophic denitrification biological filter to solve the problem of poor denitrification effect of sewage
[0005] The second purpose of the present invention is to provide a sewage treatment system based on sulfur autotrophic denitrification biological filter to solve the problem of high nitrogen load in the sewage treatment plant influent

Method used

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  • Sulfur autotrophic denitrification biofilter, sewage treatment system and treatment method thereof
  • Sulfur autotrophic denitrification biofilter, sewage treatment system and treatment method thereof
  • Sulfur autotrophic denitrification biofilter, sewage treatment system and treatment method thereof

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Embodiment 1

[0035]Such as figure 2 As shown, the sulfur autotrophic denitrification biofilter of the present invention includes a tank body 1 and a filter filler 2 filled in the tank body; the filter filler 2 includes volcanic rock particles with a particle diameter of 11 mm to 23 mm, and a particle diameter of 15 mm to 23 mm. Limestone particles with a diameter of 21 mm, sulfur ore particles with a particle size of 7 mm to 11 mm, and zeolite particles with a particle size of 8 mm to 17 mm, the volume ratio of the above four filler particles is 1:1:3:3. A water inlet pipe 3 is connected to the lower part of the side wall of the tank body 1, and the water inlet pipe is inserted into the inside of the tank body. A water outlet pipe 4 is connected to the top of the side wall of the tank body 1, and the filling amount of the filter filler 2 in the tank body 1 is controlled so that the top surface of the filler is lower than the setting height of the water outlet pipe 4.

Embodiment 2

[0037] Such as figure 1 As shown, the sewage treatment system of the present invention comprises primary settling tank, biological treatment section, secondary settling tank, sludge thickening tank, anaerobic digestion tank, nitrification tank and sulfur autotrophic denitrification biofilter, and the outlet end of nitrification tank is connected with sulfur The water inlet pipes of the autotrophic denitrification biological filter are connected, and the outlet pipes of the sulfur autotrophic denitrification biological filter are connected to the system water inlet pipe. The biological treatment section in the sewage treatment system includes anaerobic pond, anoxic pond and aerobic pond.

[0038] Such as figure 2 As shown, the sulfur autotrophic denitrification biofilter in the sewage treatment system of the present invention includes a tank body 1 and a filter filler 2 filled in the tank body; the filter filler 2 includes volcanic rock particles with a particle size of 11 mm...

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Abstract

The invention relates to a sulfur autotrophic denitrification biofilter, a sewage treatment system and a treatment method thereof. The sulfur autotrophic denitrification biofilter comprises a tank body and a filter filler arranged in the tank body; the filter filler comprises volcanic rock particles arranged on the bottom particles, limestone particles arranged on the volcanic rock particles, sulfur ore particles arranged on the limestone particles and zeolite particles with the particle size in the specification arranged on the sulfur ore particles; and the volume ratio of the four material particles is 1: 1: 3: 3. On the basis of the process flow of a traditional municipal sewage treatment plant, through process improvement, a sulfur autotrophic denitrification biological filter is added in the sludge treatment stage, and treated sludge digestion liquid flows back to a water inlet. the invention develops a new process for reducing the nitrogen load of the sewage treatment plant while ensuring the inlet water carbon source supply of the sewage treatment plant, and has important environmental and ecological significance for the treatment of domestic sewage in China.

Description

technical field [0001] The invention relates to a sewage treatment system, in particular to a sulfur autotrophic denitrification biological filter, a sewage treatment system and a treatment method thereof. Background technique [0002] Nitrogen is one of the indispensable elements for the growth of animals and plants, but it is also one of the key indicators for determining water quality. Its excessive discharge will cause a series of environmental problems and even endanger human health. Biological denitrification is a cost-effective method and is therefore widely used in wastewater treatment plants all over the world. Traditional heterotrophic denitrification denitrification is to reduce nitrate to N by heterotrophic bacteria using organic matter as electron acceptors. 2 . However, at present, a considerable part of my country's sewage treatment plants have low C / N inflow water, and the denitrification process is often limited by insufficient carbon sources, which bring...

Claims

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Application Information

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IPC IPC(8): C02F3/28C02F3/30C02F101/16
CPCC02F3/28C02F3/302C02F2101/16
Inventor 王洪杰韩凯王亚利李莹莹滕亚杰章裕
Owner HEBEI UNIVERSITY
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