Water, sewage and oil three-phase separation system and sewage treatment tank

Abstract

The utility model discloses a water, dirt, oil three-phase separation system and sewage treatment pond, including pond body, be equipped with water distributor, first three-phase separator and second three-phase separator in the pond body, water distributor is located pond body bottom layer, first three-phase separator moves pond body middle layer, the second three-phase separator is located pond body upper layer, the first three-phase separator is located pond body bottom layer, the second three-phase separator is located pond body bottom layer, the second three-phase separator is located pond body bottom layer, the second three-phase separator is located pond body bottom layer. The sewage treatment device is characterized by further comprising a water outlet pipe, a water inlet pipe and a bypass pipe, the water outlet pipe extends into the tank body from the outside of the tank body and is positioned between the first three-phase separator and the second three-phase separator, and the water inlet pipe extends into the tank body, is connected with the water distributor and is used for supplying water to the water distributor; the bypass pipe is located outside the tank body and connected between the water inlet pipe and the water outlet pipe, and the bypass pipe is provided with a third valve device. The sewage treatment device can be used for effectively separating and purifying sewage.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment equipment, and more specifically, to a sewage treatment pool and a three-phase separation system. Background Art

[0002] Three-phase wastewater separation refers to the technology used to effectively separate solids, liquids, and gases from wastewater during treatment. This separation is achieved primarily based on physical principles and density differences. During operation, wastewater first enters the separator's settling zone. Due to gravity, heavier solid particles settle to the bottom, forming a sludge layer. Lighter oils and fats rise to the top, forming an oil layer. Clear water in the middle flows out as the middle layer. Meanwhile, gases such as methane are collected in a gas collecting chamber at the top of the device.

[0003] During the sewage treatment process, it is introduced into the bottom of the treatment tank through a water distributor, then forms an upward flow, passing through the three-phase separator to achieve sewage treatment. When the sewage is highly contaminated, it cannot be treated in time. This usually requires the installation of multiple layers of three-phase separation to solve this problem. This allows the sewage to be treated by more layers of three-phase separators as it rises from the bottom of the treatment tank, thereby improving the cleanliness of the upper layer of sewage. However, due to the size of the treatment tank, the number of layers of three-phase separators that can be installed in the treatment tank is limited. Furthermore, too many layers will significantly increase the cost of the treatment tank and create excessive obstructions within the treatment tank, occupying space within the tank and hindering sewage treatment.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a sewage treatment pool that can effectively separate and purify sewage.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a sewage treatment tank, comprising a tank body, wherein a water distributor, a first three-phase separator and a second three-phase separator are arranged in the tank body, the water distributor is located at the bottom layer of the tank body, the first three-phase separator is moved to the middle layer of the tank body, and the second three-phase separator is located at the upper layer of the tank body, and also comprises an outlet pipe, an inlet pipe and a bypass pipe, the outlet pipe extends into the tank body from outside the tank body and is located between the first three-phase separator and the second three-phase separator, the inlet pipe extends into the tank body and is connected to the water distributor for supplying water to the water distributor; the bypass pipe is located outside the tank body and is connected between the water inlet pipe and the outlet pipe, and the bypass pipe is provided with a third valve device.

[0007] The utility model is further configured such that the water inlet pipe is provided with a first valve device, and the connection position of the bypass pipe and the water inlet pipe is located between the pool body and the first valve device; the water outlet pipe is provided with a second valve device, and the connection position of the bypass pipe and the water outlet pipe is located between the pool body and the second valve device.

[0008] The present invention is further configured such that the bypass pipe is connected to the water inlet pipe via a first three-way joint, and the bypass pipe is connected to the water outlet pipe via a second three-way joint.

[0009] The present invention is further configured to include a pump device, which is installed on the water inlet pipe and is used to pump water toward the water distributor. The pump device is installed between the position where the water distributor is connected to the bypass pipe.

[0010] The utility model is further configured such that one end of the water outlet pipe extends into the pool body, a section of the water outlet pipe extending into the pool body is a water outlet portion, an end of the water outlet portion is closed, and a plurality of through holes are opened on the periphery of the water outlet portion.

[0011] The utility model is further configured to further include a filter screen, which is in an annular sleeve structure. The filter screen is sleeved on the outside of the water outlet and can filter water.

[0012] The present invention is further configured such that the two ends of the filter net have different sizes, the first end is a small diameter end, and the second end is a large diameter end. The small diameter end is provided with a first support ring, and the first support ring and the small diameter end contour of the filter net are adapted to each other. The large diameter end is provided with a second support ring, and the second support ring and the large diameter end contour of the filter net are adapted to each other.

[0013] The present invention is further configured to include a first telescopic rod and a second telescopic rod, wherein the first telescopic rod is fixedly connected to the first support ring and is used to drive the first support ring to adjust along the length direction of the water outlet pipe, and the second telescopic rod is fixedly connected to the second support ring and is used to drive the second support ring to adjust along the length direction of the water outlet pipe; the outer diameter of the first support ring is smaller than the inner diameter of the second support ring, and the first support ring can pass through the inner circumference of the second support ring.

[0014] The utility model is further configured such that the filter screen is a flexible mesh structure and can be turned over.

[0015] The utility model provides a three-phase separation system, comprising the sewage treatment tank as described above. The sewage can be treated in the sewage treatment tank to achieve three-phase separation treatment.

[0016] In summary, the present invention has the following beneficial effects:

[0017] By setting up a bypass pipe that connects the water inlet pipe and the water outlet pipe, the treated water in the treatment tank can be returned to the treatment tank for further treatment, thereby improving the purity of the effluent. The sewage in the treatment tank can be circulated by the pump device until the clear liquid in the upper layer of the treatment tank meets the output requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of a sewage treatment pool in Example 1;

[0019] Figure 2 This is a structural diagram of the water outlet and filter screen in Example 2.

[0020] Figure numerals: 1. pool body; 2. water distributor; 3. first three-phase separator; 4. second three-phase separator; 5. water outlet pipe; 6. water inlet pipe; 7. pump device; 8. bypass pipe; 9. first three-way joint; 10. second three-way joint; 11. first valve device; 12. second valve device; 13. third valve device; 51. water outlet; 14. filter screen; 141. small diameter end; 142. large diameter end; 15. first support ring; 16. first telescopic rod; 17. second support ring; 18. second telescopic rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] Example 1

[0023] This embodiment discloses a sewage treatment pool, referring to Figure 1 As shown, it includes a pool body 1, in which a water distributor 2, a first three-phase separator 3 and a second three-phase separator 4 are arranged. The water distributor 2 is located at the bottom layer of the pool body 1, the first three-phase separator 3 is moved to the middle layer of the pool body 1, and the second three-phase separator 4 is located at the upper layer of the pool body 1.

[0024] The treatment tank is also provided with an outlet pipe 5, an inlet pipe 6 and a bypass pipe 8, wherein the inlet pipe 6 extends into the tank body 1 and is connected to the water distributor 2, and can transport the sewage to be treated to the water distributor 2; the outlet pipe 5 extends from the outside of the tank body 1 into the tank body 1, and can output the treated water in the treatment tank, and the position where the outlet pipe 5 extends into the tank body 1 is located between the first three-phase separator 3 and the second three-phase separator 4.

[0025] The bypass pipe 8 is located outside the pool body 1 and is connected between the water inlet pipe 6 and the water outlet pipe 5. The bypass pipe 8 is provided with a third valve device 13, which can control the on-off of the bypass pipe 8.

[0026] The water inlet pipe 6 is installed with a first valve device 11, and the connection position between the bypass pipe 8 and the water inlet pipe 6 is located between the pool body 1 and the first valve device 11. The first valve device 11 can cut off or open the passage between the water inlet pipe 6 and the sewage source.

[0027] The outlet pipe 5 is installed with a second valve device 12. The connection position between the bypass pipe 8 and the outlet pipe 5 is located between the pool body 1 and the second valve device 12. The second valve device 12 can cut off or open the passage between the outlet pipe 5 and the outlet pool.

[0028] Specifically, the bypass pipe 8 and the water inlet pipe 6 can be connected through a first three-way joint 9, and the bypass pipe 8 and the water outlet pipe 5 can be connected through a second three-way joint 10. The three pipes can be connected to each other through the three-way joints to form an I-shaped pipe distribution structure.

[0029] In addition, the water inlet pipe 6 is also equipped with a pump device 7, which can pump the sewage to be treated toward the water distributor 2. The pump device 7 is installed outside the tank body 1 and corresponds to the position between the water distributor 2 and the bypass pipe 8.

[0030] During sewage treatment in this treatment tank, the first and second valve devices 11 and 12 are opened, and the third valve device 13 is closed. Pump device 7 pumps sewage along the inlet pipe 6 to the water distributor 2. The sewage is then discharged from the water distributor 2, forming an upward flow from the bottom of the tank body 1. Heavier solid particles in the sewage settle at the bottom of the treatment tank, while lighter solid particles are carried up and down by the water flow. Passing through the first three-phase separator, the upward flow rate of the sewage is reduced, and most of the solid particles in the sewage are trapped in the lower layer of the first three-phase separator 3, resulting in the solid particles converging at the bottom of the treatment tank. As the gas in the sewage passes through the three-phase separator, the entrained gas and bubbles are trapped within the three-phase separator. These bubbles are then collected through the three-phase separator's gas pipe, achieving gas-liquid separation. Relatively clean water then converges between the first three-phase separator 3 and the second three-phase separator 4, forming a relatively clear liquid.

[0031] When the sewage in the treatment tank is highly polluted, it may not be possible to effectively separate the sewage through only one treatment. Therefore, the sewage can be circulated through the bypass pipe 8, thereby achieving multiple cyclic treatment of the sewage. During the cyclic treatment, the first valve device 11 and the second valve device 12 are closed, and the third valve device 13 is opened. Through the pumping action of the pump device 7, the liquid in the upper layer of the treatment tank can enter the outlet pipe 5, and then pass through the bypass pipe 8, and then enter the water inlet pipe 6, and then re-enter the treatment tank from the water distributor 2. Then the sewage will circulate online again, and through the separation action of the three-phase separator, the solid-liquid-gas three-phase separation can be further achieved. The sewage in the treatment tank can be circulated and pumped by the pump device 7 until the clear liquid in the upper layer of the treatment tank meets the output requirements, and then the second valve device 12 is opened, the third valve device 13 is closed to discharge the clear liquid, and the first valve device 11 is opened to replenish the sewage to be treated later into the treatment tank.

[0032] This embodiment also discloses a three-phase separation system, including the sewage treatment tank as described above. The sewage can be treated in the sewage treatment tank to achieve three-phase separation treatment.

[0033] Example 2

[0034] This embodiment discloses a sewage treatment pool. Based on the first embodiment, Figure 2 The structure of the water outlet pipe 5 is further designed as shown in FIG.

[0035] The portion of the outlet pipe 5 that extends into the pool body 1 is the outlet portion 51. The end of the outlet portion 51 is closed, and a plurality of through holes are provided on the periphery of the outlet portion 51, through which the outlet pipe 5 enters the outlet pipe 5.

[0036] In order to further treat the output sewage, a filter screen 14 can be set on the periphery of the water outlet 51. The filter screen 14 can further filter the clear liquid in the treatment pool, thereby improving the cleanliness of the sewage output from the outlet pipe 5.

[0037] The filter screen 14 is an annular sleeve structure, and the filter screen 14 is sleeved on the outside of the water outlet 51 . Most of the sewage can be filtered by the filter screen 14 before entering the water outlet pipe 5 .

[0038] Specifically, the filter screen 14 has two ends with different diameters, the first end being a small diameter end 141 and the second end being a large diameter end 142. Furthermore, the filter screen 14 is a flexible mesh structure and can be flipped over. That is, the filter screen 14 can be flipped over by passing the small diameter end 141 over the large diameter end 142. After flipping, the filter screen 14 still has an annular sleeve-like structure.

[0039] A first support ring 15 is provided at the small-diameter end 141. The first support ring 15 matches the contour of the small-diameter end 141 of the filter 14. The circumferential position of the small-diameter end 141 is connected and fixed to the first support ring 15, and the contour of the small-diameter end 141 is supported by the first support ring 15. A second support ring 17 is provided at the large-diameter end 142. The second support ring 17 matches the contour of the large-diameter end 142 of the filter 14. The circumferential position of the large-diameter end 142 is connected and fixed to the second support ring 17, and the contour of the large-diameter end 142 is supported by the second support ring 17.

[0040] The outer diameter of the first support ring 15 is smaller than the inner diameter of the second support ring 17, allowing the first support ring 15 to pass through the inner circumference of the second support ring 17. To flip the filter 14, the first support ring 15 only needs to pass through the inner circumference of the second support ring 17, and then the first support ring 15 and the second support ring 17 can be pulled apart to flip the filter 14 over.

[0041] During installation, the first support ring 15 and the second support ring 17 are both sleeved on the outer periphery of the water outlet portion 51 and can be adjusted along the length direction of the water outlet pipe 5 .

[0042] A first telescopic rod 16 and a second telescopic rod 18 are also installed within the treatment tank. The directions of extension and retraction of the first and second telescopic rods 16, 18 align with the length of the outlet pipe 5. The first telescopic rod 16 is fixedly connected to the first support ring 15 and can be driven to adjust the first support ring 15 along the length of the outlet pipe 5. The second telescopic rod 18 is fixedly connected to the second support ring 17 and can be driven to adjust the second support ring 17 along the length of the outlet pipe 5.

[0043] By controlling the extension and contraction of the first telescopic rod 16 and the second telescopic rod 18, the position of the filter screen 14 can be controlled. Before and after the flipping adjustment, the filter screen 14 is sleeved on the outer periphery of the water outlet portion 51, thereby roughly covering the through hole of the water outlet portion 51, and performing simple filtering treatment on the output sewage.

[0044] When the sewage is discharged from the outlet pipe 5, it will pass through the filter 14 for filtration treatment. After a long period of filtration treatment, the surface of the filter 14 may be blocked by particulate matter. By turning the filter 14 over, the direction in which the sewage flows through the filter 14 will be opposite, which can form a state similar to backwashing, and can partially wash off the particulate matter on the surface of the filter 14, thereby improving the filtration effect of the filter 14 and extending the normal service life of the filter 14.

[0045] After the inversion, the filter screen 14 is backwashed, and the particles on its surface will fall off and enter the outlet pipe 5 along with the outflowing water, thereby increasing the turbidity of the outflowing water to a certain extent. Therefore, in the early stage after the inversion, the treatment tank can be adjusted to a circulating treatment state, so that the particles and impurities that fall off the filter screen 14 can be returned to the bottom of the treatment tank.

[0046] This embodiment also discloses a three-phase separation system, including the sewage treatment tank as described above. The sewage can be treated in the sewage treatment tank to achieve three-phase separation treatment.

[0047] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A sewage treatment tank, comprising a tank body (1), wherein a water distributor (2), a first three-phase separator (3) and a second three-phase separator (4) are provided in the tank body (1), wherein the water distributor (2) is located at the bottom layer of the tank body (1), the first three-phase separator (3) is located at the middle layer of the tank body (1), and the second three-phase separator (4) is located at the upper layer of the tank body (1), characterized in that: The utility model further comprises an outlet pipe (5), an inlet pipe (6) and a bypass pipe (8), wherein the outlet pipe (5) extends from the outside of the tank body (1) into the tank body (1) and is located between the first three-phase separator (3) and the second three-phase separator (4); the inlet pipe (6) extends into the tank body (1) and is connected to the water distributor (2) for supplying water to the water distributor (2); the bypass pipe (8) is located outside the tank body (1) and is connected between the inlet pipe (6) and the outlet pipe (5); and the bypass pipe (8) is provided with a third valve device (13).

2. A sewage treatment pool according to claim 1, characterized in that: The water inlet pipe (6) is provided with a first valve device (11), and the connection position of the bypass pipe (8) and the water inlet pipe (6) is located between the pool body (1) and the first valve device (11); the water outlet pipe (5) is provided with a second valve device (12), and the connection position of the bypass pipe (8) and the water outlet pipe (5) is located between the pool body (1) and the second valve device (12).

3. A sewage treatment pool according to claim 2, characterized in that: The bypass pipe (8) is connected to the water inlet pipe (6) via a first three-way joint (9), and the bypass pipe (8) is connected to the water outlet pipe (5) via a second three-way joint (10).

4. A sewage treatment pool according to claim 1, characterized in that: It also includes a pump device (7), which is installed on the water inlet pipe (6) and is used to pump water toward the water distributor (2). The pump device (7) is installed between the position where the water distributor (2) is connected to the bypass pipe (8).

5. A sewage treatment pool according to claim 1, characterized in that: One end of the water outlet pipe (5) extends into the pool body (1), and the section of the water outlet pipe (5) extending into the pool body (1) is a water outlet portion (51). The end of the water outlet portion (51) is closed, and a plurality of through holes are opened on the outer periphery of the water outlet portion (51).

6. A sewage treatment pool according to claim 5, characterized in that: The invention also comprises a filter screen (14), wherein the filter screen (14) is an annular sleeve structure, and the filter screen (14) is sleeved on the outside of the water outlet portion (51) and can filter water.

7. A sewage treatment pool according to claim 5, characterized in that: The two ends of the filter screen (14) have different sizes, the first end is a small-diameter end (141), and the second end is a large-diameter end (142). The small-diameter end (141) is provided with a first support ring (15), and the first support ring (15) and the outline of the small-diameter end (141) of the filter screen (14) are mutually adapted. The large-diameter end (142) is provided with a second support ring (17), and the second support ring (17) and the outline of the large-diameter end (142) of the filter screen (14) are mutually adapted.

8. A sewage treatment pool according to claim 7, characterized in that: The invention also comprises a first telescopic rod (16) and a second telescopic rod (18), wherein the first telescopic rod (16) is fixedly connected to the first support ring (15) and is used to drive the first support ring (15) to adjust along the length direction of the water outlet pipe (5), and the second telescopic rod (18) is fixedly connected to the second support ring (17) and is used to drive the second support ring (17) to adjust along the length direction of the water outlet pipe (5); the outer diameter of the first support ring (15) is smaller than the inner diameter of the second support ring (17), and the first support ring (15) can pass through the inner periphery of the second support ring (17).

9. A sewage treatment pool according to claim 6, characterized in that: The filter screen (14) is a flexible mesh structure, and the filter screen (14) can be turned over.

10. A three-phase separation system, characterized in that: Comprising a sewage treatment pool as described in any one of claims 1-9.

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