Sewage treatment device of water purification system

Abstract

The utility model relates to a sewage treatment device of a water purification system, which comprises a bottom plate, the bottom plate is provided with a first-stage aeration tank, a second-stage aeration tank and a third-stage aeration tank, the outer wall of the first-stage aeration tank is connected with a sewage liquid inlet pipe and a first-stage air inlet pipe, the bottom of an inner cavity of the first-stage aeration tank is fixedly connected with a partition plate, and the surface of the partition plate is provided with a plurality of through holes; a plurality of air outlet pipes are laid on the top wall of the partition plate, a plurality of air outlet holes are formed in the surfaces of the air outlet pipes, the first-stage air inlet pipe is connected with the air outlet pipes through pipelines, the first-stage aeration tank, the second-stage aeration tank and the third-stage aeration tank are arranged in parallel, and two first connecting plates are arranged on the outer wall of the first-stage aeration tank and the outer wall of the second-stage aeration tank; a first transition cavity is defined by the outer wall of the first-stage aeration tank, the outer wall of the second-stage aeration tank, the two first connecting plates and the bottom plate, and two second connecting plates are arranged on the outer wall of the second-stage aeration tank and the outer wall of the third-stage aeration tank.

Description

Technical Field

[0001] The utility model relates to a sewage treatment device, in particular to a sewage treatment device of a water purification system. Background Art

[0002] Domestic sewage is the domestic sewage discharged daily from non-industrial areas such as residential areas and schools. The sewage contains a large number of microorganisms, which need to be thoroughly removed before further purification treatment.

[0003] In the prior art, sewage treatment equipment has a poor effect on removing microorganisms and is unable to fully and thoroughly remove microorganisms in sewage. Microorganisms are likely to remain in the treated water, thereby affecting the final water quality. Utility Model Content

[0004] The purpose of the utility model is to provide a sewage treatment device for a water purification system, which can more thoroughly remove microorganisms in sewage, improve water purification efficiency, and improve water purification quality.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A sewage treatment device for a water purification system includes a bottom plate, on which a first-stage aeration tank, a second-stage aeration tank and a third-stage aeration tank are provided. The outer wall of the first-stage aeration tank is connected to a sewage liquid inlet pipe and a first-stage air inlet pipe. A partition is fixedly connected to the bottom of the inner cavity of the first-stage aeration tank. The surface of the partition is provided with multiple perforations. The top wall of the partition is paved with multiple air outlet pipes. The surface of the air outlet pipe is provided with multiple air outlet holes. The first-stage air inlet pipe is connected to the air outlet pipe through a pipe. The first-stage aeration tank, the second-stage aeration tank and the third-stage aeration tank are arranged in parallel. Two first connecting plates are provided on the outer wall of the first-stage aeration tank and the outer wall of the second-stage aeration tank. The outer wall of the first-stage aeration tank, the outer wall of the second-stage aeration tank, the two first connecting plates and the bottom plate together form a first transition chamber. Two second connecting plates are provided on the outer wall of the second-stage aeration tank and the outer wall of the third-stage aeration tank. The outer wall of the gas tank, the two second connecting plates and the bottom plate together form a second transition chamber. The upper edges of the first-stage aeration tank, the second-stage aeration tank and the third-stage aeration tank are provided with a top cover plate, which serves as the top wall of the first transition chamber and the second transition chamber. The upper part of the first-stage aeration tank is provided with a first liquid outlet, and the bottom of the outer wall of the second-stage aeration tank is provided with a second liquid inlet. The first liquid outlet and the second liquid inlet are both connected to the first transition chamber. The upper part of the second-stage aeration tank is provided with a second liquid outlet, and the bottom of the outer wall of the third-stage aeration tank is provided with a third liquid inlet. The second liquid outlet and the third liquid inlet are both connected to the second transition chamber. The upper part of the outer wall of the third-stage aeration tank is provided with a third liquid outlet, and the top walls of the second-stage aeration tank and the third-stage aeration tank are both provided with air outlets. The bottom of the outer wall of the second-stage aeration tank is connected to a second air inlet pipe, and the bottom of the outer wall of the third-stage aeration tank is connected to a third air inlet pipe.

[0007] Specifically, the first-stage aeration tank is provided with a first-stage top cover, and the first-stage top cover is provided with a plurality of air outlet holes.

[0008] Specifically, the air outlet pipe is divided into a transverse air outlet pipe and a longitudinal air outlet pipe. A plurality of transverse air outlet pipes are arranged in parallel, and two adjacent transverse air outlet pipes are connected by a longitudinal air outlet pipe.

[0009] Specifically, the inner bottom wall of the first-stage aeration tank is fixed with multiple vertical plates, the partition is arranged on the top side edge of the multiple vertical plates, and the drainage outlet of the sewage inlet pipe is arranged between the partition and the inner bottom wall of the first-stage aeration tank.

[0010] Specifically, the top walls of the secondary aeration tank and the tertiary aeration tank are both conical, and the cone tips of the top walls are provided with air outlets.

[0011] Specifically, a secondary gas collecting bottom cover is fixedly connected to the bottom wall of the inner cavity of the secondary aeration tank, an opening is provided on the side wall of the secondary gas collecting bottom cover, and the secondary air inlet pipe enters the secondary gas collecting bottom cover through the opening. The top wall of the secondary gas collecting bottom cover is connected to a secondary gas collecting pipe, and the secondary gas collecting pipe is communicated with the inner cavity of the secondary gas collecting bottom cover.

[0012] Specifically, a three-stage gas collecting bottom cover is fixedly connected to the bottom wall of the inner cavity of the three-stage aeration tank, an opening is provided on the side wall of the three-stage gas collecting bottom cover, a three-stage air inlet pipe enters the three-stage gas collecting bottom cover through the opening, and a three-stage gas collecting pipe is connected to the top wall of the three-stage gas collecting bottom cover, and the three-stage gas collecting pipe is communicated with the inner cavity of the three-stage gas collecting bottom cover.

[0013] Specifically, the bottoms of the first-stage aeration tank, the second-stage aeration tank, and the third-stage aeration tank are all connected to drainage branch pipes, which are connected to the main drainage pipe.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] Oxygen is introduced into the secondary gas collecting bottom cover through the secondary air inlet pipe, and then flows into the secondary gas collecting pipe, so that the introduced oxygen is concentrated at the top of the secondary gas collecting pipe and overflows, thereby causing more oxygen to be concentrated and dissolved in the upper part of the liquid in the secondary aeration tank. Similarly, oxygen is introduced into the tertiary gas collecting pipe through the tertiary air inlet pipe, causing more oxygen to be concentrated and dissolved in the upper part of the liquid in the tertiary aeration tank.

[0016] Oxygen is introduced into multiple outlet pipes at the bottom of the first-stage aeration tank to increase the oxygen content of the liquid in the first-stage aeration tank. The increased oxygen content accelerates the metabolism of liquid microorganisms in the first-stage aeration tank, thereby accelerating the decomposition of microorganisms.

[0017] The diameter of the secondary aeration tank and the tertiary aeration tank is much smaller than that of the primary aeration tank. Therefore, the oxygen is concentratedly guided to the upper part of the liquid in the secondary aeration tank and the tertiary aeration tank through the secondary aeration pipe and the tertiary aeration pipe, thereby greatly improving the oxygen content in the upper part of the liquid in the secondary aeration tank and the tertiary aeration tank, thereby improving the microbial decomposition effect in the upper part of the liquid, achieving local targeting and local decomposition, and improving the decomposition effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A three-dimensional view of the sewage treatment plant of the water purification system;

[0020] Figure 2 A partial view of the sewage treatment plant of the water purification system;

[0021] Figure 3 A partial view of the sewage treatment plant of the water purification system;

[0022] Figure 4 A partial view of the sewage treatment plant of the water purification system.

[0023] In the picture:

[0024] 11. Bottom plate;

[0025] 2. First-stage aeration tank; 21. Sewage inlet pipe; 22. First-stage air inlet pipe; 23. Partition plate; 24. Air outlet pipe; 241. Horizontal air outlet pipe; 242. Vertical air outlet pipe; 26. First-stage top cover; 261. Air outlet hole; 27. Vertical plate; 28. Water inlet horizontal pipe; 281. Liquid inlet hole; 282. First-stage liquid outlet;

[0026] 3. Secondary aeration tank; 31. First connecting plate; 32. First transition chamber; 33. Secondary liquid inlet; 34. Secondary liquid outlet; 35. Secondary gas collecting bottom cover; 36. Secondary gas collecting pipe; 37. Secondary air inlet pipe;

[0027] 4. Three-stage aeration tank; 41. Second connecting plate; 42. Second transition chamber; 43. Three-stage liquid inlet; 44. Three-stage liquid outlet; 45. Three-stage gas collecting bottom cover; 46. Three-stage gas collecting pipe; 47. Three-stage air inlet pipe;

[0028] 51. Top cover; 52. Air outlet; 53. Drainage branch pipe; 54. Drainage main pipe. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] See Figures 1 to 4 A sewage treatment device for a water purification system includes a base plate 11, which is equipped with a primary aeration tank 2, a secondary aeration tank 3, and a tertiary aeration tank 4. The outer wall of the primary aeration tank 2 is connected to a sewage inlet pipe 21 and a primary air inlet pipe 22. A partition 23 is fixed to the bottom of the inner cavity of the primary aeration tank 2, and the surface of the partition 23 is provided with multiple perforations. The top wall of the partition 23 is provided with multiple outlet pipes 24, and the surface of the outlet pipes 24 is provided with multiple outlet holes (not shown). The primary air inlet pipe 22 and the air outlet pipe 24 are connected by a pipe.

[0031] See Figure 2 The primary aeration tank 2, secondary aeration tank 3, and tertiary aeration tank 4 are arranged in parallel. Two first connecting plates 31 are provided on the outer walls of the primary aeration tank 2 and the secondary aeration tank 3. The outer walls of the primary aeration tank 2 and the secondary aeration tank 3, the two first connecting plates 31, and the bottom plate 11 collectively form a first transition chamber 32.

[0032] Two second connecting plates 41 are provided on the outer walls of the secondary aeration tank 3 and the tertiary aeration tank 4. The outer walls of the secondary aeration tank 3, the tertiary aeration tank 4, the two second connecting plates 41 and the bottom plate 11 together form a second transition chamber 42.

[0033] Combine Figure 1 、 Figure 2 The upper edges of the first-stage aeration tank 2, the second-stage aeration tank 3 and the third-stage aeration tank 4 are provided with a top cover plate 51, which serves as the top wall of the first transition chamber 32 and the second transition chamber 42. The upper part of the inner cavity of the first-stage aeration tank 2 is provided with a water inlet horizontal pipe 28 (see Figure 4 ), the bottom wall of the water inlet transverse pipe 28 is provided with a liquid inlet hole 281, one end of the water inlet transverse pipe 28 passes through the side wall of the first-stage aeration tank 2 to form a first-stage liquid outlet 282 (see Figure 3 A secondary liquid inlet 33 is provided at the bottom of the outer wall of the secondary aeration tank 3 , and both the primary liquid outlet 282 and the secondary liquid inlet 33 are connected to the first transition chamber 32 .

[0034] The upper portion of the secondary aeration tank 3 is provided with a secondary liquid outlet 34, and the lower portion of the outer wall of the tertiary aeration tank 4 is provided with a tertiary liquid inlet 43. Both the secondary liquid outlet 34 and the tertiary liquid inlet 43 are connected to the second transition chamber 42. The upper portion of the outer wall of the tertiary aeration tank 4 is provided with a tertiary liquid outlet 44 (see Figure 1 ).

[0035] Combine Figure 1 、 Figure 4 The top walls of the secondary aeration tank 3 and the tertiary aeration tank 4 are both provided with an air outlet 52. The bottom of the outer wall of the secondary aeration tank 3 is connected to a secondary air inlet pipe 37, and the bottom of the outer wall of the tertiary aeration tank 4 is connected to a tertiary air inlet pipe 47.

[0036] Specifically, the first-stage aeration tank 2 is provided with a first-stage top cover 26 , and the first-stage top cover 26 is provided with a plurality of air outlet holes 261 .

[0037] Specifically, the air outlet pipe 24 is divided into a transverse air outlet pipe 241 and a longitudinal air outlet pipe 242 . A plurality of transverse air outlet pipes 241 are arranged in parallel, and two adjacent transverse air outlet pipes 241 are connected by a longitudinal air outlet pipe 242 .

[0038] Specifically, the inner bottom wall of the first-stage aeration tank 2 is fixedly connected to a plurality of vertical plates 27 , the partition 23 is arranged at the top side edge of the plurality of vertical plates 27 , and the drainage outlet of the sewage inlet pipe 21 is arranged between the partition 23 and the inner bottom wall of the first-stage aeration tank 2 .

[0039] Specifically, the top walls of the secondary aeration tank 3 and the tertiary aeration tank 4 are both conical, and the air outlet 52 is provided at the cone tip of the top wall.

[0040] Specifically, see Figure 4 A secondary gas collecting bottom cover 35 is fixedly connected to the bottom wall of the inner cavity of the secondary aeration tank 3. The side wall of the secondary gas collecting bottom cover 35 is provided with an opening, through which the secondary air inlet pipe 37 enters the secondary gas collecting bottom cover 35. A secondary gas collecting pipe 36 is connected to the top wall of the secondary gas collecting bottom cover 35, and the secondary gas collecting pipe 36 is in communication with the inner cavity of the secondary gas collecting bottom cover 35.

[0041] Specifically, a third-stage gas collecting bottom cover 45 is fixedly connected to the bottom wall of the inner cavity of the third-stage aeration tank 4. The side wall of the third-stage gas collecting bottom cover 45 is provided with an opening, through which the third-stage air inlet pipe 47 enters the third-stage gas collecting bottom cover 45. The top wall of the third-stage gas collecting bottom cover 45 is connected to a third-stage gas collecting pipe 46, which is in communication with the inner cavity of the third-stage gas collecting bottom cover 45.

[0042] Specifically, the bottoms of the primary aeration tank 2 , the secondary aeration tank 3 , and the tertiary aeration tank 4 are all connected to drainage branch pipes 53 , and the drainage branch pipes 53 are connected to the drainage main pipe 54 .

[0043] The working principle of the sewage treatment device of the utility model water purification system is as follows:

[0044] Domestic sewage enters the primary aeration tank 2 through the sewage inlet pipe 21. Oxygen flows through the primary inlet pipe 22 to the transverse outlet pipe 241 and the longitudinal outlet pipe 242, and is discharged through the vents on the surfaces of the transverse outlet pipe 241 and the longitudinal outlet pipe 242. The transverse outlet pipe 241 and the longitudinal outlet pipe 242 cover the bottom of the inner cavity of the primary aeration tank 2, so that oxygen bubbles are spread throughout the liquid in the primary aeration tank 2.

[0045] After the liquid level in the primary aeration tank 2 overflows the liquid inlet hole 281 , the liquid enters the water inlet transverse pipe 28 through the liquid inlet hole 281 and enters the first transition chamber 32 through the primary liquid outlet 282 . The liquid in the first transition chamber 32 enters the secondary aeration tank 3 through the secondary liquid inlet 33 .

[0046] The liquid in the secondary aeration tank 3 enters the second transition chamber 42 through the secondary liquid outlet 34 , and the liquid in the second transition chamber 42 enters the tertiary aeration tank 4 through the tertiary liquid inlet 43 . The liquid in the tertiary aeration tank 4 is finally discharged through the tertiary liquid outlet 44 .

[0047] Oxygen flows through the secondary air inlet pipe 37 into the secondary air collecting bottom cover 35 and then into the secondary air collecting pipe 36. This oxygen is concentrated at the top opening of the secondary air collecting pipe 36 and overflows, thereby causing more oxygen to dissolve in the upper portion of the liquid in the secondary aeration tank 3. Similarly, oxygen is introduced into the tertiary air collecting pipe 46 through the tertiary air inlet pipe 47, causing more oxygen to dissolve in the upper portion of the liquid in the tertiary aeration tank 4.

[0048] Oxygen is introduced into the multiple outlet pipes 24 at the bottom of the primary aeration tank 2 to increase the oxygen content of the liquid in the primary aeration tank 2. The increased oxygen content accelerates the metabolism of liquid microorganisms in the primary aeration tank 2, thereby accelerating the decomposition of microorganisms.

[0049] The diameters of the secondary aeration tank 3 and the tertiary aeration tank 4 are much smaller than those of the primary aeration tank 2. Furthermore, the secondary liquid outlet 34 of the secondary aeration tank 3 is located on the upper side of the tank wall, and the tertiary liquid outlet 44 of the tertiary aeration tank 4 is also located on the upper side of the tank wall. Therefore, oxygen is concentratedly directed to the upper portion of the liquid in the secondary aeration tank 3 and the tertiary aeration tank 4 via the secondary and tertiary gas collecting pipes 36 and 46. This greatly increases the oxygen content in the upper portion of the liquid in the secondary and tertiary aeration tanks 3 and 4, thereby enhancing the microbial decomposition effect in the upper portion of the liquid in the tanks (the liquid must flow through this upper portion before it flows out), achieving targeted decomposition and improving the decomposition effect.

[0050] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A sewage treatment device for a water purification system, characterized by: The bottom plate includes a first-stage aeration tank, a second-stage aeration tank and a third-stage aeration tank. The outer wall of the first-stage aeration tank is connected to a sewage inlet pipe and a first-stage air inlet pipe. A partition is fixed to the bottom of the inner cavity of the first-stage aeration tank. The surface of the partition is provided with multiple perforations. The top wall of the partition is paved with multiple outlet pipes. The surface of the outlet pipe is provided with multiple outlet holes. The first-stage air inlet pipe is connected to the outlet pipe through a pipe. The first-stage aeration tank, the second-stage aeration tank and the third-stage aeration tank are arranged in parallel. Two first connecting plates are provided on the outer wall of the first-stage aeration tank and the outer wall of the second-stage aeration tank. The outer wall of the first-stage aeration tank, the outer wall of the second-stage aeration tank, the two first connecting plates and the bottom plate together form a first transition cavity. Two second connecting plates are provided on the outer wall of the second-stage aeration tank and the outer wall of the third-stage aeration tank. The second connecting plate and the bottom plate together form a second transition chamber. A top cover plate is provided on the upper edges of the first-stage aeration tank, the second-stage aeration tank and the third-stage aeration tank. The top cover plate serves as the top wall of the first transition chamber and the second transition chamber. A first liquid outlet is provided on the upper portion of the first aeration tank, a second liquid inlet is provided on the bottom of the outer wall of the second aeration tank, and the first liquid outlet and the second liquid inlet are both connected to the first transition chamber. A second liquid outlet is provided on the upper portion of the second aeration tank, a third liquid inlet is provided on the bottom of the outer wall of the third aeration tank, and the second liquid outlet and the third liquid inlet are both connected to the second transition chamber. A third liquid outlet is provided on the upper portion of the outer wall of the third aeration tank, and an air outlet is provided on the top walls of the second aeration tank and the third aeration tank. The second air inlet pipe is connected to the bottom of the outer wall of the second aeration tank, and the third air inlet pipe is connected to the bottom of the outer wall of the third aeration tank.

2. The sewage treatment device of the water purification system according to claim 1, characterized in that: The first-stage aeration tank is provided with a first-stage top cover, and the first-stage top cover is provided with a plurality of air outlet holes.

3. The sewage treatment device of the water purification system according to claim 1, characterized in that: The air outlet pipe is divided into a horizontal air outlet pipe and a vertical air outlet pipe. A plurality of horizontal air outlet pipes are arranged in parallel, and two adjacent horizontal air outlet pipes are connected by a vertical air outlet pipe.

4. The sewage treatment device of the water purification system according to claim 1, characterized in that: The inner bottom wall of the first-stage aeration tank is fixed with multiple vertical plates, the partition is arranged on the top side edge of the multiple vertical plates, and the drainage outlet of the sewage inlet pipe is arranged between the partition and the inner bottom wall of the first-stage aeration tank.

5. The sewage treatment device of the water purification system according to claim 1, characterized in that: The top walls of the secondary aeration tank and the tertiary aeration tank are both conical, and an air outlet is provided at the cone tip of the top wall.

6. The sewage treatment device of the water purification system according to claim 1, characterized in that: A secondary gas collecting bottom cover is fixedly connected to the bottom wall of the inner cavity of the secondary aeration tank. An opening is provided on the side wall of the secondary gas collecting bottom cover. The secondary air inlet pipe enters the secondary gas collecting bottom cover through the opening. The top wall of the secondary gas collecting bottom cover is connected to a secondary gas collecting pipe, which is communicated with the inner cavity of the secondary gas collecting bottom cover.

7. The sewage treatment device of the water purification system according to claim 2, characterized in that: The bottom wall of the inner cavity of the three-stage aeration tank is fixedly connected with a three-stage gas collecting bottom cover, and the side wall of the three-stage gas collecting bottom cover is provided with an opening. The three-stage air inlet pipe enters the three-stage gas collecting bottom cover through the opening. The top wall of the three-stage gas collecting bottom cover is connected with a three-stage gas collecting pipe, and the three-stage gas collecting pipe is communicated with the inner cavity of the three-stage gas collecting bottom cover.

8. The sewage treatment device of the water purification system according to claim 1, characterized in that: The bottoms of the first-stage aeration tank, the second-stage aeration tank and the third-stage aeration tank are all connected with drainage branch pipes, which are connected to the drainage main pipe.

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