Completely autotrophic nitrogen-removal reactor and nitrogen-removal process

A technology of fully autotrophic denitrification and reactor, which is applied in the field of fully autotrophic denitrification reactor and denitrification process, can solve the problems of increasing the height of the reactor and the inability to realize denitrification simultaneously, and achieve the goal of preventing pollution and clogging Effect

Active Publication Date: 2017-01-04
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention solves the problem that the reactors equipped with membrane modules in the prior art cannot realize denitrification synchronously and need to set up an aeration zone independently, thereby increasing the height of the reactor

Method used

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  • Completely autotrophic nitrogen-removal reactor and nitrogen-removal process
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  • Completely autotrophic nitrogen-removal reactor and nitrogen-removal process

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Embodiment 1

[0035] The full autotrophic denitrification reactor provided in this embodiment is as figure 1 As shown, it includes a reactor cylinder 1, a water inlet 2 is provided at the bottom of the reactor cylinder 1, and an exhaust port 3 is provided at the top; 1, above the water inlet 2 is provided with a water distributor 18.

[0036] A nitrosation-ANAMMOX zone 4 is arranged on the upper part of the reactor cylinder 1, and a first packing assembly 5 is arranged in the nitrosation-ANAMMOX zone 4, and in the first packing assembly Anammox bacteria are attached to the inner layer of the surface of 5, and nitrosative bacteria are attached to the outer layer of the surface of the first packing assembly 5; in this embodiment, an aeration channel 11 is provided on the first packing assembly 5, The aeration channel 11 is arranged in a ring shape, such as figure 2 As shown, the first packing assembly 5 described in this embodiment is a non-woven packing, as an optional embodiment, the fir...

Embodiment 2

[0048] The full autotrophic denitrification reactor provided in this embodiment is as image 3 As shown, it includes a reactor cylinder 1, a water inlet 2 is provided at the bottom of the reactor cylinder 1, and an exhaust port 3 is provided at the top; 1, above the water inlet 2 is provided with a water distributor 18.

[0049] A nitrosation-ANAMMOX zone 4 is arranged on the upper part of the reactor cylinder 1, and a first packing assembly 5 is arranged in the nitrosation-ANAMMOX zone 4, and the first packing assembly is Non-woven packing; anammox bacteria are attached to the inner layer of the surface of the first packing assembly 5, and nitrosating bacteria are attached to the outer layer of the surface of the first packing assembly 5; A packing assembly 5 is provided with an aeration channel 11, and the aeration channel 11 is provided with two, and the two aeration channels are along the center of the reactor cylinder on the cross section of the reactor cylinder. Axisym...

Embodiment 3

[0055] The fully autotrophic denitrification reactor provided in this embodiment includes a reactor cylinder 1, a water inlet 2 is provided at the bottom of the reactor cylinder 1, and an exhaust port 3 is provided at the top; in order to make the water intake uniform, this Embodiment A water distributor 18 is provided in the reactor cylinder 1 above the water inlet 2 .

[0056] A nitrosation-ANAMMOX zone 4 is arranged on the upper part of the reactor cylinder 1, and a first packing assembly 5 is arranged in the nitrosation-ANAMMOX zone 4, and the first packing assembly 5 It is a non-woven filler; anammox bacteria are attached to the inner layer of the surface of the first filler component 5, and nitrosating bacteria are attached to the outer layer of the surface of the first filler component 5; the present embodiment is described in the The first packing assembly 5 is provided with an aeration channel 11, and the aeration channel 11 is arranged in a vertical direction. In thi...

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Abstract

The invention provides a completely autotrophic nitrogen-removal reactor. A nitrosation-anaerobic ammonia oxidation region is arranged on the upper part of a reactor barrel, a first packing assembly is arranged in the nitrosation-anaerobic ammonia oxidation region, anaerobic ammonium oxidation bacteria are attached to the inner layer of the surface of the first packing assembly, and nitrosobacteria are attached to the outer layer of the surface of the first packing assembly; a denitrification region is arranged on the lower part of the reactor barrel; a second packing assembly attached with denitrifying bacteria is arranged on the denitrification region; a film assembly is arranged at the top end of the nitrosation-anaerobic ammonia oxidation region; a water outlet communicates with a water outlet side of the film assembly; an aeration device is arranged in the nitrosation-anaerobic ammonia oxidation region and is positioned below the first packing assembly; and a first three-phase separator is arranged between the first packing assembly and the film assembly. By the reactor, pollution and blocking of the film assembly are prevented effectively, the effect of treating waste water is enhanced, and whole completely autotrophic nitrogen-removal reaction can be carried out efficiently and stably.

Description

technical field [0001] The invention belongs to the field of wastewater treatment, and in particular relates to a whole-process autotrophic denitrification reactor and a denitrification process. Background technique [0002] Whole autotrophic nitrogen removal is a new type of nitrogen removal process that has emerged in recent years. The principle is: first, under aerobic conditions, nitrosating bacteria convert part of the ammonia nitrogen in the wastewater into nitrite nitrogen; then, under anaerobic conditions, the nitrite nitrogen and the remaining ammonia nitrogen are converted into into nitrogen. Compared with the traditional denitrification process, the full autotrophic denitrification process has the advantages of short process flow and small footprint. [0003] In the prior art, the Chinese patent document CN103979683B discloses a process based on an integrated expanded sludge bed-membrane bioreactor. The device is divided into an upper membrane filtration functio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30
Inventor 张莉杨嘉春王圣瑞许可宸
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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