Oxidation ditch denitrification device

Abstract

The utility model relates to the technical field of oxidation ditch denitrification, and aims to solve the problems of poor denitrification effect and low efficiency due to the adoption of reflux circulating sewage in the prior art. The utility model provides an oxidation ditch denitrification device. The oxidation ditch denitrification device comprises a liquid pumping assembly, an oxygen enrichment mechanism and a liquid separation assembly, the oxygen enrichment mechanism comprises a shell, a compression assembly and a ventilation assembly; the compression assembly is arranged in the shell and divides the shell into a first inner cavity and a second inner cavity. The liquid pumping assembly is arranged in the shell in a penetrating manner and communicates with the first inner cavity; the compression assembly is arranged in the shell in a penetrating mode and communicates with the first inner cavity. The second inner cavity is communicated with the first inner cavity; the second inner cavity is communicated with the liquid separation assembly; according to the utility model, sewage circulation is realized, oxygen dissolving is carried out on sewage in the bottom layer anoxic area, and the device is used for other wall surface anoxic areas, so that the denitrification efficiency and effect of the oxidation ditch are integrally improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oxidation ditch denitrification, in particular to an oxidation ditch denitrification device. Background Art

[0002] In the oxidation ditch treatment process, biological denitrification mainly relies on the denitrification and nitrification processes. During the aeration stage of the oxidation ditch, some microorganisms in the oxidation ditch will oxidize ammonia nitrogen into nitrate, which is the nitrification process. Through the synergistic effect of nitrification, nitrogen in the wastewater is effectively removed. However, anoxic areas will inevitably form in the oxidation ditch, and the denitrification effect of wastewater in the anoxic areas is poor. To solve this problem, the existing technology usually uses a backflow method to increase the oxygen content in the anoxic areas.

[0003] For example, patent publication number CN113307368A discloses a reflux device for an oxidation ditch. By means of a lifting pump, part of the wastewater in the aerobic zone is allowed to flow back to the anoxic zone through a liquid inlet pipe, a liquid outlet pipe, and a first reflux pipe, thereby improving the denitrification effect of the wastewater in the anoxic zone.

[0004] However, simply circulating sewage from different areas does not significantly increase the dissolved oxygen content of the sewage. Therefore, after pumping sewage from the aerobic area into the anoxic area, there is still insufficient oxygen, resulting in poor overall denitrification effect in the oxidation ditch.

[0005] Based on the above description, there is an urgent need for an oxidation ditch denitrification device with good denitrification effect. Utility Model Content

[0006] The utility model aims to provide an oxidation ditch denitrification device, aiming to solve the technical problems in the prior art of using reflux circulating sewage, resulting in poor denitrification effect and low efficiency.

[0007] The embodiments of the present invention are achieved through the following technical solutions:

[0008] An oxidation ditch denitrification device comprises a liquid pumping component, an oxygen enrichment mechanism and a liquid separation component; the oxygen enrichment mechanism comprises a shell, a compression component and a ventilation component; the compression component is arranged in the shell and divides the shell into a first inner cavity and a second inner cavity; the liquid pumping component is arranged through the shell and communicates with the first inner cavity; the compression component is arranged through the shell and communicates with the first inner cavity; the second inner cavity is communicated with the first inner cavity; and the second inner cavity is communicated with the liquid separation component.

[0009] Preferably, the compression assembly includes a first bucket; the expanded end of the first bucket is connected to the bottom inner wall of the shell; the liquid pumping assembly is connected to the first bucket; and the contracted end of the first bucket extends toward the ventilation assembly.

[0010] Preferably, the compression assembly further includes a contraction pipe and a second bucket; the expanded end of the second bucket is connected to the top inner wall of the shell; the first bucket is connected to the second bucket through the contraction pipe; and the ventilation assembly is connected to the second bucket.

[0011] Preferably, a diversion orifice plate is provided in the second bucket.

[0012] Preferably, a plurality of liquid outlet holes are provided on the top inner wall of the second bucket body close to the shell; and the diversion orifice plate is provided between the liquid outlet holes and the contraction pipe.

[0013] Preferably, the liquid separation component includes a plurality of liquid separation branches; the plurality of liquid separation branches are all connected to the bottom of the second inner cavity.

[0014] Preferably, the liquid separation branch pipe is connected to an S-shaped hole pipe.

[0015] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0016] The utility model extracts sewage through the liquid extraction component and sends it into the first inner cavity at the bottom of the shell, compresses the sewage through the first inner cavity so that it can be sprayed to the ventilation component for dissolved oxygen, and then flows into the second inner cavity and is discharged to the anoxic wall area of the oxidation ditch through the liquid separation component, thereby realizing the circulation of sewage and dissolving oxygen in the sewage in the anoxic area of the bottom layer, and using it for other anoxic areas on the wall, thereby improving the efficiency and effect of denitrification in the oxidation ditch as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 for Figure 1 sectional view of

[0020] Figure 3 for Figure 1 Application top view.

[0021] Icon: 1-liquid extraction assembly, 2-oxygen enrichment mechanism, 21-shell, 211-first inner cavity, 212-second inner cavity, 22-compression assembly, 221-first bucket, 222-contraction pipe, 223-second bucket, 23-ventilation assembly, 3-liquid separation assembly, 31-liquid separation branch pipe, 4-diversion orifice plate, 5-S-type orifice tube. DETAILED DESCRIPTION

[0022] Example 1

[0023] See also Figures 1 to 3 The utility model provides the following technical solutions: an oxidation ditch denitrification device, which is suitable for enriching the sewage in the anoxic layer at the bottom of the oxidation ditch with oxygen so as to improve the denitrification efficiency.

[0024] Specifically, if Figures 1 to 3 As shown, an oxidation ditch denitrification device includes a liquid pumping component 1, an oxygen enrichment mechanism 2 and a liquid separation component 3; the oxygen enrichment mechanism 2 includes a shell 21, a compression component 22 and a ventilation component 23; the compression component 22 is arranged in the shell 21 and divides the shell 21 into a first inner cavity 211 and a second inner cavity 212; the liquid pumping component 1 is passed through the shell 21 and communicated with the first inner cavity 211; the compression component 22 is passed through the shell 21 and communicated with the first inner cavity 211; the second inner cavity 212 is communicated with the first inner cavity 211; the second inner cavity 212 is communicated with the liquid separation component 3.

[0025] In this embodiment, the liquid extraction component 1 includes a liquid extraction pipe and a liquid extraction pump. The liquid extraction pipe is inserted into the bottom of the oxidation ditch. The sewage is extracted by the liquid extraction pump and sent into the first inner cavity 211 at the bottom of the shell 21. The sewage is compressed by the first inner cavity 211 so as to be sprayed into the ventilation component 23 for dissolved oxygen, and then flows into the second inner cavity 212 and is discharged to the anoxic wall area of the oxidation ditch through the liquid separation component, thereby realizing the circulation of sewage and dissolving oxygen in the sewage in the anoxic area of the bottom layer, and using it for other anoxic areas on the wall, thereby improving the efficiency and effect of denitrification in the oxidation ditch as a whole.

[0026] Specifically, if Figure 1 and Figure 2 As shown, the compression assembly 22 includes a first bucket 221; the expanded end of the first bucket 221 is connected to the bottom inner wall of the housing 21; the liquid extraction assembly 1 is in communication with the first bucket 221; the contracted end of the first bucket 221 extends toward the vent assembly 23. The compression assembly 22 also includes a contraction pipe 222 and a second bucket 223; the expanded end of the second bucket 223 is connected to the top inner wall of the housing 21; the first bucket 221 is in communication with the second bucket 223 via the contraction pipe 222; and the vent assembly 23 is in communication with the second bucket 223.

[0027] In this embodiment, a contraction pipe 222 is provided between the first bucket 221 and the second bucket 223 to compress the sewage drawn into the shell 21 and spray it toward the diversion orifice plate 4 for diversion or atomization, thereby facilitating the full dissolution of oxygen in the diverted or atomized sewage in combination with the ventilation component 23. The oxygenated sewage is squeezed out from the multiple liquid outlet holes on the top inner wall of the second bucket 223 close to the shell 21 under the influence of gas and subsequent compressed sewage, and is then discharged through multiple liquid branch pipes 31 and evenly discharged into the oxidation ditch in the anoxic wall area of the oxidation ditch through the S-shaped hole pipe 5.

[0028] In this embodiment, the ventilation assembly 23 includes an air pump and a plurality of air jets connected to the air pump; the air jets are disposed inside the housing 21 and extend toward the diversion orifice plate 4 .

[0029] In this embodiment, the diversion orifice plate 4 is arranged between the liquid outlet and the contraction pipe 222, which can not only leave a buffer space for the compressed sewage, but also expand the diversion or atomization range, thereby expanding the contact area with the air and improving the dissolved oxygen rate.

[0030] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An oxidation ditch denitrification device, comprising a liquid pumping assembly (1), characterized in that: The invention also includes an oxygen enrichment mechanism (2) and a liquid separation component (3); the oxygen enrichment mechanism (2) includes a shell (21), a compression component (22) and a ventilation component (23); the compression component (22) is arranged inside the shell (21) and divides the shell (21) into a first inner cavity (211) and a second inner cavity (212); the liquid extraction component (1) is arranged through the shell (21) and communicates with the first inner cavity (211); the compression component (22) is arranged through the shell (21) and communicates with the first inner cavity (211); the second inner cavity (212) is communicated with the first inner cavity (211); and the second inner cavity (212) is communicated with the liquid separation component (3).

2. The oxidation ditch denitrification device according to claim 1, characterized in that: The compression assembly (22) comprises a first bucket (221); the expanded end of the first bucket (221) is connected to the bottom inner wall of the shell (21); the liquid extraction assembly (1) is in communication with the first bucket (221); and the contracted end of the first bucket (221) extends toward the ventilation assembly (23).

3. The oxidation ditch denitrification device according to claim 2, characterized in that: The compression assembly (22) further comprises a contraction pipe (222) and a second bucket (223); the expanded end of the second bucket (223) is connected to the top inner wall of the shell (21); the first bucket (221) is in communication with the second bucket (223) via the contraction pipe (222); and the ventilation assembly (23) is in communication with the second bucket (223).

4. The oxidation ditch denitrification device according to claim 3, characterized in that: A diversion orifice plate (4) is provided in the second bucket (223).

5. The oxidation ditch denitrification device according to claim 4, characterized in that: The second bucket (223) is provided with a plurality of liquid outlet holes on the top inner wall close to the shell (21); the diversion orifice plate (4) is provided between the liquid outlet holes and the contraction pipe (222).

6. The oxidation ditch denitrification device according to any one of claims 1 to 3, characterized in that: The liquid separation component (3) comprises a plurality of liquid separation branches (31); the plurality of liquid separation branches (31) are all in communication with the bottom of the second inner cavity (212).

7. The oxidation ditch denitrification device according to claim 6, characterized in that: The liquid separation branch pipe (31) is connected to an S-shaped hole pipe (5).

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