Intensive sewage treatment tank

Abstract

The utility model provides an intensive sewage treatment tank belongs to biological sewage treatment tank technical field, its structure includes the first intensive sewage treatment tank and the second intensive sewage treatment tank of symmetrical arrangement setting, and the rear side between first intensive sewage treatment tank and second intensive sewage treatment tank is connected with sewage inlet pipe, the intensive distribution setting of anaerobic tank, first anoxic tank, first aerobic tank, oxygen depletion tank, second anoxic tank, second aerobic tank, water distribution tank, horizontal type secondary sedimentation tank, effluent tank, sludge channel, sludge pump tank, this first intensive sewage treatment tank and second intensive sewage treatment tank are all set into a combined unit, effectively save the floor area, effectively reduce the pipeline loss and energy waste due to distance, play low carbon operation, realize the emission reduction path, reduce the civil engineering and pipeline investment, reduce the loss of hydraulic elevation, energy saving and carbon reduction, and also greatly shorten the inspection route, be convenient for operation management, and the practicality is strong.

Description

Technical Field

[0001] This utility model relates to an intensive sewage treatment tank, belonging to the technical field of biological sewage treatment tanks. Background Technology

[0002] Existing biological wastewater treatment ponds face the problem of extremely limited land availability for given projects, far below the national land quota for wastewater treatment plants of the corresponding scale. Furthermore, phased construction is required, making the layout of wastewater treatment structures even more challenging. To effectively save land, shorten the process flow, and conserve energy, multiple units are combined into a single unit, effectively saving land area. This allows for the organic combination of different units in the traditional process and optimizes the layout of structures, reducing lifting distances and effectively minimizing pipeline losses and energy waste caused by distance, thus achieving low-carbon operation and emission reduction. It also reduces civil engineering and pipeline investment and significantly shortens inspection routes, facilitating operation and management. To address these needs, this utility model proposes an intensive wastewater treatment pond. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an intensive sewage treatment pond to solve the existing problems.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: an intensive sewage treatment tank, the structure of which includes a first intensive sewage treatment tank and a second intensive sewage treatment tank arranged symmetrically, and a sewage inlet pipe is connected to the rear side between the first intensive sewage treatment tank and the second intensive sewage treatment tank. The first intensive wastewater treatment tank includes an anaerobic tank, a first anoxic tank, a first aerobic tank, a deoxygenated tank, a second anoxic tank, a second aerobic tank, a water distribution tank, a horizontal flow secondary sedimentation tank, and an effluent tank, arranged in an N-shape from right to left. A sludge channel is longitudinally arranged at the upper middle part of the horizontal flow secondary sedimentation tank. A sludge pump tank is arranged behind the water distribution tank. The sludge channel and the sludge pump tank are inclinedly connected. The first intensive wastewater treatment tank and the second intensive wastewater treatment tank have the same structure.

[0005] A further improvement is that a first aeration element is distributed at the bottom of the first aerobic tank; The bottom of the second aerobic tank is equipped with a second aeration element; An air corridor connected to the first aeration element and the second aeration element is provided at the upper end of the left wall of the first aerobic tank. A first return pump is installed in the deoxygenation tank, and the other end of the first return pump extends to the middle of the cavity of the first anoxic tank.

[0006] A further improvement is that multiple stirrers are installed inside the anaerobic tank, the first anoxic tank, the deoxygenated tank, and the second anoxic tank.

[0007] A further improvement is that a water distribution weir is horizontally arranged in the middle of the water distribution pool, a water distribution flower wall is provided on the front side of the water distribution pool, and a filter water outlet pipe is horizontally connected to the lower left corner of the water outlet pool.

[0008] A further improvement is that a sludge scraper is installed longitudinally above the sludge channel to extend into the horizontal flow secondary sedimentation tank.

[0009] A further improvement is that a sludge external pump is installed at the left end of the sludge pump tank cavity, while a second return pump is installed at the right end of the sludge pump tank cavity, and the other end of the second return pump extends into the anaerobic tank.

[0010] A further improvement is that the first aeration element, the second aeration element, the first return pump, the agitator, the sludge scraper, the sludge external pump, and the second return pump are all existing technologies, and their structures will not be described in detail here.

[0011] A further improvement is that the other end of the sludge pump is connected to an external sludge buffer tank.

[0012] The beneficial effects of the utility model are: This utility model provides an intensive wastewater treatment tank, which is intensively distributed and arranged with an anaerobic tank, a first anoxic tank, a first aerobic tank, a deoxygenated tank, a second anoxic tank, a second aerobic tank, a water distribution tank, a horizontal flow secondary sedimentation tank, an effluent tank, a sludge channel, and a sludge pump tank. The first and second intensive wastewater treatment tanks are set up as a combined unit, which effectively saves the land area. The first return pump between the deoxygenated tank and the first anoxic tank and the second return pump between the sludge pump tank and the anaerobic tank are optimized by the layout of the structures to shorten the pipe spacing, effectively reducing pipe losses and energy waste caused by distance, achieving low-carbon operation, realizing emission reduction path, reducing civil engineering and pipeline investment, reducing hydraulic elevation loss, saving energy and reducing carbon, and also greatly shortening the inspection route, which is convenient for operation and management and has strong practicality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the top structure of an intensive sewage treatment tank according to the present invention; Figure 2 This utility model Figure 1 Enlarged view of part A in the image. Detailed Implementation

[0014] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0015] Please see Figure 1-2The present invention provides a schematic diagram of a intensive sewage treatment tank: its structure includes a first intensive sewage treatment tank 1 and a second intensive sewage treatment tank 2 arranged symmetrically, and a sewage inlet pipe 3 is connected to the rear side between the first intensive sewage treatment tank 1 and the second intensive sewage treatment tank 2. The first intensive wastewater treatment tank 1 includes an anaerobic tank 10, a first anoxic tank 11, a first aerobic tank 12, a deoxygenated tank 13, a second anoxic tank 14, a second aerobic tank 15, a water distribution tank 16, a horizontal flow secondary sedimentation tank 17, and an effluent tank 18 arranged in an N-shape from right to left. A sludge channel 19 is longitudinally arranged at the upper middle part of the horizontal flow secondary sedimentation tank 17. A sludge pump tank 20 is arranged behind the water distribution tank 16. The sludge channel 19 and the sludge pump tank 20 are inclinedly connected. The first intensive wastewater treatment tank 1 and the second intensive wastewater treatment tank 2 have the same structure.

[0016] The bottom of the first aerobic tank 12 is provided with a first aeration element 121, and the bottom of the second aerobic tank 15 is provided with a second aeration element 15. An air corridor 152 communicating with the first aeration element 121 and the second aeration element 151 is opened at the upper end of the left wall of the first aerobic tank 12. A first return pump 131 is installed in the deoxygenation tank 13, and the other end of the first return pump 131 extends to the middle of the cavity of the first anoxic tank 11.

[0017] Multiple stirrers 141 are installed inside the anaerobic tank 10, the first anoxic tank 11, the deoxygenated tank 13, and the second anoxic tank 14.

[0018] A water distribution weir 161 is horizontally arranged in the middle of the water distribution pool 16, and a water distribution flower wall 162 is arranged on the front side of the water distribution pool 16. A filter water outlet pipe 181 is horizontally connected to the lower left corner of the water outlet pool 18.

[0019] A sludge scraper 21 is longitudinally installed above the sludge channel 19 to extend into the horizontal flow secondary sedimentation tank 17.

[0020] A sludge external pump 201 is provided at the left end of the sludge pump tank 20, and a second return pump 202 is provided at the right end of the sludge pump tank 20, with the other end of the second return pump 202 extending into the anaerobic tank 10.

[0021] Working principle: In operation, the wastewater in the wastewater inlet pipe 3 first flows into the anaerobic tanks 10 of the two intensive wastewater treatment ponds. Simultaneously, a portion of the sludge mixture is drawn from the sludge pump tank 20 via the second return pump 202 into the anaerobic tank 10, where it is mixed with the sludge by the agitator 141 for biological reaction. Then, it flows into the first anoxic tank 11, where the agitator 141 further agitates the entire tank for biological reaction. Finally, it flows into the first aerobic tank 12, where the first aeration element 121 aerates the water, causing a stripping reaction, before finally flowing into... The biological reaction in the deoxygenation tank 13 is agitated by the stirrer 141. A portion of the fluid in the deoxygenation tank 13 is pumped to the first anoxic tank 11 by the first return pump 131 to enhance the overall biological reaction. The remaining fluid flows to the second anoxic tank 14, where it is agitated by the stirrer 141, and then flows to the second aerobic tank 15, where it is aerated by the second aeration element 151 to produce a stripping reaction. Finally, the fluid flows into the cavity behind the distribution tank 16, and is divided into left and right sections by the distribution weir 161, and then through the distribution flower wall 162. The fluid is uniformly distributed and flows into the horizontal flow secondary sedimentation tank 17 for sedimentation treatment. The fluid in the horizontal flow secondary sedimentation tank 17 will settle and separate into layers. The upper layer of clear water flows to the effluent tank 18 and is then discharged, while the lower layer of sludge is longitudinally scraped and sucked upward by the sludge scraper 21 and drawn into the sludge channel 19, which is then inclined and guided into the sludge pump tank 20 to achieve partial reuse of the sludge mixture.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An intensive wastewater treatment tank, characterized in that: Its structure includes a first intensive sewage treatment tank and a second intensive sewage treatment tank arranged symmetrically, and a sewage inlet pipe is connected to the rear side between the first intensive sewage treatment tank and the second intensive sewage treatment tank. The first intensive wastewater treatment tank includes an anaerobic tank, a first anoxic tank, a first aerobic tank, a deoxygenated tank, a second anoxic tank, a second aerobic tank, a water distribution tank, a horizontal flow secondary sedimentation tank, and an effluent tank, arranged in an N-shape from right to left. A sludge channel is longitudinally arranged at the upper middle part of the horizontal flow secondary sedimentation tank. A sludge pump tank is arranged behind the water distribution tank. The sludge channel and the sludge pump tank are inclinedly connected. The first intensive wastewater treatment tank and the second intensive wastewater treatment tank have the same structure.

2. The intensive wastewater treatment tank according to claim 1, characterized in that: The first aeration element is distributed at the bottom of the first aerobic tank; The bottom of the second aerobic tank is equipped with a second aeration element; An air corridor connected to the first aeration element and the second aeration element is provided at the upper end of the left wall of the first aerobic tank. A first return pump is installed in the deoxygenation tank, and the other end of the first return pump extends to the middle of the cavity of the first anoxic tank.

3. The intensive wastewater treatment tank according to claim 2, characterized in that: Multiple stirrers are installed inside the anaerobic tank, the first anoxic tank, the deoxygenated tank, and the second anoxic tank.

4. The intensive wastewater treatment tank according to claim 3, characterized in that: A water distribution weir is horizontally arranged in the middle of the water distribution pool, a water distribution flower wall is arranged on the front side of the water distribution pool, and a filter water outlet pipe is horizontally connected to the lower left corner of the water outlet pool.

5. The intensive wastewater treatment tank according to claim 4, characterized in that: A sludge scraper is installed longitudinally above the sludge channel to extend into the horizontal flow secondary sedimentation tank.

6. The intensive wastewater treatment tank according to claim 5, characterized in that: A sludge external pump is installed at the left end of the sludge pump tank, while a second return pump is installed at the right end of the sludge pump tank, with the other end of the second return pump extending into the anaerobic tank.

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