Combined SBR-Carrousel oxidation ditch high-efficiency denitrification process

An oxidation ditch and composite technology, applied in the field of denitrification process and high-efficiency denitrification process, can solve the problems that the sludge stability is not as good as anaerobic digestion, the denitrification and phosphorus removal effect is not too high, and the automatic control requirements are high, and the nitrification can be achieved. The effect of enhanced denitrification, pipeline saving, and enhanced denitrification effect

Active Publication Date: 2012-02-15
SHANGHAI HONESS ENVIRONMENTAL TECH CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the SBR process also has certain shortcomings, mainly manifested in: intermittent cycle operation, high requirements for self-control; variable water level operation, high power consumption; denitrification and phosphorus removal effect is not very high, sludge stability is not as good as anaerobic digestion

Method used

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  • Combined SBR-Carrousel oxidation ditch high-efficiency denitrification process
  • Combined SBR-Carrousel oxidation ditch high-efficiency denitrification process
  • Combined SBR-Carrousel oxidation ditch high-efficiency denitrification process

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specific Embodiment approach

[0023] The main innovation of the present invention is that the Carrousel oxidation ditch and SBR are organically combined, which not only utilizes their respective denitrification functions, strengthens the denitrification effect, but also utilizes the characteristics of SBR that does not require a secondary sedimentation tank, saving civil engineering and reducing occupation. land area. The specific implementation method is as follows: the composite SBR-Carrousel oxidation ditch high-efficiency denitrification process includes an oval Carrousel oxidation ditch and an SBR pool, and an anoxic zone is set at the top of the Carrousel oxidation ditch aerobic zone. Make full use of the tank volume; two SBR tanks are respectively set on both sides of the Carrousel oxidation ditch, and share the outer tank wall with them; the two SBR tanks operate alternately, which can not only achieve enhanced denitrification, but also realize mud-water separation, as a secondary sedimentation tank...

Embodiment 1

[0026] Example 1, the composite SBR-Carrousel oxidation ditch high-efficiency denitrification process, including the Carrousel oxidation ditch (including anoxic zone 1 and aerobic zone 2) and SBR pool 3, the Carrousel oxidation ditch oval One end of the shaped pool body is the anoxic zone 1, and the other part is divided into two corridors, an elliptical aerobic zone 2, and the SBR pool 3 shares the outer walls of the anoxic zone 1 and the aerobic zone 2 of the Carrousel oxidation ditch, and is set as Symmetrical two sets of SBR pools3. A regulating gate 4 is set between the anoxic pool and the aerobic pool in the Carrousel oxidation ditch to form an internal backflow, and the backflow is controlled by the opening degree of the regulating gate. A regulating weir gate 5 is set between the Carrousel oxidation ditch and the SBR tank.

Embodiment 2

[0027] Example 2, composite SBR-Carrousel oxidation ditch high-efficiency denitrification process, including Carrousel oxidation ditch (including anoxic zone 1 and aerobic zone 2) and SBR pool 3, Carrousel oxidation ditch oval One end of the shaped pool body is the anoxic zone 1, and the other part is divided into two corridors, an elliptical aerobic zone 2, and the SBR pool 3 shares the outer walls of the anoxic zone 1 and the aerobic zone 2 of the Carrousel oxidation ditch, and is set as Symmetrical two sets of SBR pools3. A regulating gate 4 is set between the anoxic pool and the aerobic pool in the Carrousel oxidation ditch to form an internal backflow, and the backflow is controlled by the opening degree of the regulating gate. A regulating weir gate 5 is set between the Carrousel oxidation ditch and the SBR tank. The underwater pusher 6 is set in the aerobic zone of the Carrousel oxidation ditch.

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Abstract

The invention belongs to the technical field of water treatment, and in particular relates to a combined SBR-Carrousel oxidation ditch high-efficiency denitrification process. In the combined SBR-Carrousel oxidation ditch high-efficiency denitrification process, an oval Carrousel oxidation ditch and SBR pools are provided, wherein an anoxic zone is arranged at the top end of an aerobic zone of the Carrousel oxidation ditch, so that the volume of the pool is fully utilized; two SBR pools are respectively arranged on the two sides of the Carrousel oxidation ditch and share an outer pool wall with the Carrousel oxidation ditch; and the two SBR pools alternately run, can strengthen denitrification and realize the separation of mud and water and are used as a secondary sedimentation tank. Compared with the prior art, the process has the advantages that: the anoxic zone and the aerobic zone of the Carrousel oxidation ditch and the SBR pools are integrated, and the secondary sedimentation tank is saved; and the Carrousel oxidation ditch and the SBR pools share the pool wall, so floor area is obviously reduced, free space of the Carrousel oxidation ditch is fully utilized, a pipeline, a pump, a valve system, an internal return system and the like of a singly constructed facility are saved and investment cost and operating cost are greatly reduced.

Description

technical field [0001] The invention relates to a high-efficiency denitrification process, which belongs to the technical field of water treatment, in particular to a denitrification process in which SBR and Carrousel oxidation ditch are integrated. Background technique [0002] Carrousel oxidation ditch is a sewage treatment process developed on the basis of traditional oxidation ditch. The anoxic zone and the aerobic zone of a typical Carrousel oxidation ditch are in one ditch. Under the action of the surface aeration machine, the whole oxidation ditch forms a circulating flow of water, and the dissolved oxygen concentration of the mixed solution changes along the length of the ditch. Form anoxic and aerobic environment, realize nitrification and denitrification, and realize denitrification. Overall, the Carrousel oxidation ditch has a simple process and is easy to manage, and can realize biological denitrification and sludge stabilization at the same time. However, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F3/30
Inventor 王文标张宝王浩李继香毛勇先高永军张艳周欣赵云翔张雷
Owner SHANGHAI HONESS ENVIRONMENTAL TECH CORP
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