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Biological nitrogen removal system and process thereof

A technology of biological denitrification and process, applied in the field of biological denitrification system and its process, can solve the problems of high cost, long process flow, large floor area, etc., achieve reduced floor space, compact process flow, and ensure the quality of effluent water Effect

Active Publication Date: 2014-08-27
NINGBO HENGJIE WATER DEV
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  • Description
  • Claims
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Problems solved by technology

[0008] The present invention proposes a biological denitrification system and its process, which solves the problems in the prior art that sludge reflux and nitrifying liquid reflux need to be carried out, large floor space, long process flow and high cost

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  • Biological nitrogen removal system and process thereof
  • Biological nitrogen removal system and process thereof
  • Biological nitrogen removal system and process thereof

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Embodiment Construction

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0031] see Figure 1-3 Shown: a biological denitrification system, the system includes a primary anaerobic system 1, a primary aerobic system 2 and a sedimentation system 3. Among them, the primary anaerobic system 1 is a pool body, and the pool body is equipped with push-flow stirring facilities. The first-level aerobic system 2 is a pool body, which is equipped with push-flow mixing facilities and aeration facilities; the first-level anaerobic system 1 and the first-level aerobic system 2 are connected to each other, and there are ope...

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Abstract

The invention provides a biological nitrogen removal system and a process thereof. The system comprises a primary anaerobic system, a primary anoxic system and a sedimentation system. The primary anaerobic system, the primary anoxic system and the sedimentation system are arranged and communicated in sequence; the primary anaerobic system is a tank body provided with a plug-flow stirring device; the primary anoxic system is a tank body provided with a plug-flow stirring device and an aeration device; the tank bodies of the primary anaerobic system and the primary anoxic system are connected; a separation wall is provided with an opening; the sedimentation system comprises a primary sedimentation tank and a secondary sedimentation tank; the top of primary sedimentation tank is provided with an overflow channel; the bottom of the secondary sedimentation tank is provided with a mud bucket; the upper part of the mud bucket is communicated to the primary sedimentation tank and is provided with an effluent overflow port; and the second sedimentation tank is provided with a baffle plate for preventing short flow. The biological nitrogen removal system can effectively realize interexchange of mud and water, realize synchronous nitrification and denitrification, effectively remove nitrogen-containing pollutants in wastewater and reduce cost. A production flow is compact and floor space can be saved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a biological denitrification system and a process thereof. Background technique [0002] Water environmental pollution and water eutrophication seriously threaten people's production and life. In response to this, the state has increased the discharge standards for nitrogen and phosphorus pollutants contained in wastewater year by year, in order to realize the great national policy of sustainable development of the motherland. Nitrogen-containing pollutants are one of the main pollutants in water environment pollution and water eutrophication, and have become a research hotspot in the environmental protection industry. [0003] At present, the mainstream biological denitrification process in the industry is the A / O process (pre-type denitrification biological denitrification system) and its variants. The A / O process includes treatment structures such as facultative biol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 赵志龙米久春黄慧君陈其经
Owner NINGBO HENGJIE WATER DEV
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