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Autotrophic denitrification nitrogen removal device and anoxic tank

A technology of autotrophic denitrification and anoxic pool, applied in anaerobic digestion treatment, chemical instruments and methods, aerobic and anaerobic process treatment, etc., can solve the problem of unsustainable, autotrophic denitrification and denitrification device mass transfer efficiency Low-level problems, to achieve the effect of reducing fouling, facilitating contact mass transfer, and improving mass transfer efficiency

Pending Publication Date: 2021-08-06
北控水务(中国)投资有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide an autotrophic denitrification denitrification device and anoxic pond to solve the technical problem of low mass transfer efficiency and unsustainable of the autotrophic denitrification denitrification device in the prior art

Method used

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  • Autotrophic denitrification nitrogen removal device and anoxic tank
  • Autotrophic denitrification nitrogen removal device and anoxic tank
  • Autotrophic denitrification nitrogen removal device and anoxic tank

Examples

Experimental program
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Embodiment 1

[0029] Embodiment 1 of the present invention provides a kind of autotrophic denitrification denitrification device, such as figure 1 As shown, a drum 2 and a drive mechanism 3 are included. Wherein, the drum 2 is filled with an autotrophic denitrification carrier 5 . The driving mechanism 3 is drivingly connected with the drum 2, and the driving mechanism 3 can drive the drum 2 to rotate around its central axis. As a result, the rotation of the drum drives the autotrophic denitrification carrier to rotate and roll, and the surface of the carrier is cleaned through the friction between the carriers, reducing the fouling of the carrier surface and improving the mass transfer efficiency. At the same time, the particle size of the autotrophic denitrification carrier gradually decreases during the friction process, which indirectly improves the sphericity of the carrier, increases the contact area between the carrier and the sewage, and is more conducive to contact mass transfer. ...

Embodiment 2

[0039] This embodiment provides an anoxic pool, such as figure 1 As shown, at least one autotrophic denitrification and denitrification device of Embodiment 1 is included. Preferably, the autotrophic denitrification and denitrification device is installed at least 0.2m below the water surface of the anoxic pool 1 . When applied to the anoxic pool, the driving mechanism 3 is arranged on the top of the pool body of the anoxic pool 1, and the driving gear 41 of the driving mechanism 3 and the driven gear 42 on the drum 2 are connected through the chain 4 of the transmission mechanism to realize the driving Mechanism 3 drives the rotation of the drum. The anoxic pool can be traditional AO, A 2 O or the anoxic section in its modified processes (such as improved AAO process, Patten Fu process, multi-stage AO process, UCT process).

[0040] Preferably, when at least two autotrophic denitrification and denitrification devices are arranged in the anoxic pond, at least two autotrophi...

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Abstract

The invention provides an autotrophic denitrification nitrogen removal device and an anoxic tank, relates to the technical field of sewage treatment, and solves the technical problems of low mass transfer efficiency and non-persistence of an autotrophic denitrification device in the prior art. The device comprises a roller (2) and a driving mechanism (3); the roller (2) is filled with autotrophic denitrification carriers (5); the driving mechanism (3) is in driving connection with the roller (2); and the driving mechanism (3) can drive the roller (2) to rotate around the central axis of the roller (2). The autotrophic denitrification carriers are driven to rotate and roll through rotation of the roller, and the surfaces of the carriers are cleaned through friction between the carriers, so that pollution and blockage of the surfaces of the carriers are reduced, and the mass transfer efficiency is improved. The particle size of the autotrophic denitrification carriers is gradually reduced in the friction process, so that the sphericity of the carrier is indirectly improved, the contact area between the carrier and sewage is increased, and contact mass transfer is more facilitated.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an autotrophic denitrification denitrification device and an anoxic pool. Background technique [0002] Biological denitrification of sewage is divided into heterotrophic denitrification and autotrophic denitrification. Heterotrophic denitrification requires organic matter to provide electron donors, and the carbon-nitrogen ratio C / N (organic matter / total nitrogen) required for normal reaction ) is generally >4. However, due to the generally low carbon-nitrogen ratio of municipal sewage, when the raw water carbon source is insufficient, it is often necessary to add an additional carbon source, which increases the cost of sewage treatment, the complexity of control, and the additional amount of sludge produced by the proliferation of heterotrophic bacteria. The traditional three-stage, two-stage, and single-stage heterotrophic biological nitrogen removal systems (O / A f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28C02F3/30C02F101/16C02F101/38
CPCC02F3/2806C02F3/305C02F2101/16C02F2101/38
Inventor 王承亮张黎明景香顺薛晓飞李碧
Owner 北控水务(中国)投资有限公司
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