Vertical double-layer sedimentation tank for sewage treatment

Abstract

The utility model provides a sewage treatment is with vertical double -deck sedimentation tank relates to sewage treatment technical field, including base and install on the appearance of base upper surface, still including the flow guide cylinder of installing in the outer tube inside, the inclined pipe precipitation unit and annular water weir are embedded with on the flow guide cylinder surface, the annular water weir sets up above the inclined pipe precipitation unit, the outer tube side surface is worn and is equipped with the water inlet pipe, the water inlet pipe other end is worn in the flow guide cylinder inside. This sewage treatment is with vertical double -deck sedimentation tank and passes into the flow guide cylinder inside directly with water inlet pipe to the sewage, after the sludge that deposits stays at the bottom, the rest water is slowly from the second sedimentation chamber to the first sedimentation chamber through the water passing hole, then slowly rises through the inclined pipe precipitation unit and annular water weir, after layer by layer filtration, flow into the next pool body, than the water flow speed in the traditional center flow guide cylinder is more slow, and the sedimentation effect is better, and the concave of jar body bottom is more favorable to the sludge gathering of sedimentation tank, make the backflow liquid sludge concentration higher.

Description

Technical Field

[0001] This utility model relates to a sedimentation tank, specifically a vertical double-layer sedimentation tank for sewage treatment, belonging to the field of sewage treatment technology. Background Technology

[0002] Domestic sewage is wastewater discharged from residents' daily lives, mainly originating from residential and public buildings, such as houses, government offices, schools, hospitals, shops, public places, and industrial enterprise toilets. The pollutants contained in domestic sewage are mainly organic matter and a large number of pathogenic microorganisms. The organic matter in domestic sewage is extremely unstable and easily decomposes, producing a foul odor. Bacteria and pathogens use the organic matter in domestic sewage as nutrients to multiply in large numbers, which can lead to the spread of infectious diseases. Therefore, domestic sewage must be treated before being discharged.

[0003] While existing central guide tubes can promote the flow of wastewater, the non-uniform distribution of the fluid leads to unsatisfactory sedimentation and affects the sludge separation efficiency.

[0004] Therefore, a vertical double-layer sedimentation tank for sewage treatment is proposed here. Utility Model Content

[0005] This invention proposes a vertical double-layer sedimentation tank for wastewater treatment to solve the problem that the non-uniform distribution of fluid in the prior art leads to unsatisfactory sedimentation effect and affects the sludge separation efficiency.

[0006] This utility model is achieved through the following technical solution: a vertical double-layer sedimentation tank for sewage treatment, including a base and an outer shell installed on the upper surface of the base, and a guide tube installed inside the outer pipe. The surface of the guide tube is embedded with an inclined tube sedimentation unit and an annular water weir. The annular water weir is located above the inclined tube sedimentation unit. An inlet pipe is passed through the side of the outer pipe, and the other end of the inlet pipe is attached to the inner wall of the guide tube.

[0007] The surface of the guide tube has water passage holes.

[0008] Furthermore, a sedimentation plate is fixedly installed at the lower end of the outer tube, the lower end of the guide tube is installed on the surface of the sedimentation plate, and drain holes are provided on the inner walls of the first sedimentation chamber and the second sedimentation chamber. An observation hole is provided on the upper surface of the outer tube, and the surface of the sedimentation plate is concave.

[0009] Furthermore, a water storage tank is provided on the surface of the base, and an installation groove corresponding to the outer pipe is provided on the surface of the base, and the outer pipe is installed inside the installation groove.

[0010] Furthermore, a first drain pipe is provided inside the base, and the upper end of the first drain pipe corresponds to a drain hole provided on the inner wall of the second sedimentation chamber. A first solenoid valve is installed on the surface of the first drain pipe.

[0011] Furthermore, a second drain pipe is provided inside the base, the upper end of the second drain pipe corresponds to the drain hole provided on the inner wall of the first sedimentation chamber, and a second solenoid valve is installed on the surface of the second drain pipe.

[0012] This utility model provides a vertical double-layer sedimentation tank for sewage treatment, which has the following beneficial effects:

[0013] This wastewater treatment system uses a vertical double-layer sedimentation tank. Wastewater is directly fed into the guide tube through an inlet pipe. After sedimentation, sludge remains at the bottom, while the remaining water slowly flows from the second sedimentation chamber to the first sedimentation chamber through the water passage. It then slowly rises and passes through the inclined tube sedimentation unit and the annular weir, undergoing layer-by-layer filtration before flowing into the next tank. Compared to the traditional central guide tube, the water flow speed is slower, the sedimentation effect is better, and the concave surface at the bottom of the tank is more conducive to sludge accumulation in the sedimentation tank, resulting in a higher sludge concentration in the return liquid.

[0014] This wastewater treatment system uses a vertical double-layer sedimentation tank with inclined tube sedimentation units. After the first sedimentation, the wastewater enters the inclined tube sedimentation unit, where the water flow rate is slowed down again, allowing sludge or other impurities in the water to continue to settle. The settled sludge then flows downward along the inclined tube sedimentation unit and reaches the bottom of the first sedimentation chamber. The settled water continues to rise through the opening at the top of the inclined tube sedimentation unit. Finally, the annular weir filters out any suspended solids that cannot settle. The final settled water flows into the next tank through the drain pipe. The inclined tube sedimentation unit causes the wastewater to flow at an angle during the sedimentation process, increasing the contact time between the sludge and the tube wall, thereby improving the sludge separation efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a front sectional view of the present invention.

[0017] Explanation of reference numerals in the attached figures

[0018] 1. Outer pipe; 101. First sedimentation chamber; 102. Sedimentation plate; 103. Drain hole; 104. Observation hole; 105. Drain pipe;

[0019] 2. Flow guide tube; 201. Water passage hole; 3. Inclined tube sedimentation unit;

[0020] 4. Circular weir; 5. Inlet pipe; 6. Base; 601. Water storage tank; 7. First drain pipe; 8. Second drain pipe. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0022] Example 1

[0023] Please see Figures 1-2 This utility model provides a vertical double-layer sedimentation tank for sewage treatment, including a base 6 and an outer casing mounted on the upper surface of the base 6. It also includes a guide tube 2 installed inside an outer pipe 1. An inclined tube sedimentation unit 3 and an annular weir 4 are embedded on the surface of the guide tube 2, with the annular weir 4 positioned above the inclined tube sedimentation unit 3. An inlet pipe 5 passes through the side of the outer pipe 1, with the other end of the inlet pipe 5 attached to the inner wall of the guide tube 2. A first sedimentation chamber 101 is formed between the outer pipe 1 and the guide tube 2. A sedimentation plate 102 is fixedly installed at the lower end of the outer pipe 1, and the lower end of the guide tube 2 is installed on the surface of the sedimentation plate 102. The inner wall of the first sedimentation chamber 101 and the second sedimentation chamber 101 are connected. The inner wall of the sedimentation chamber is provided with a drain hole 103, and the upper surface of the outer pipe 1 is provided with an observation hole 104. The surface of the sedimentation plate 102 is concave. The vertical double-layer sedimentation tank for sewage treatment directly introduces sewage into the guide tube 2 through the inlet pipe 5. After sedimentation, the sludge remains at the bottom, and the remaining water slowly flows from the second sedimentation chamber to the first sedimentation chamber 101 through the water passage 201. Then it slowly rises and passes through the inclined tube sedimentation unit 3 and the annular weir 4. After being filtered layer by layer, it flows into the next tank. The water flow speed is slower than that in the traditional central guide tube 2, the sedimentation effect is better, and the concave surface at the bottom of the tank is more conducive to the accumulation of sludge in the sedimentation tank, resulting in a higher sludge concentration in the return liquid.

[0024] Please refer to this carefully. Figure 2 The guide tube 2 has water passage holes 201 on its surface. After the first sedimentation, the sewage enters the inclined tube sedimentation unit 3, which slows down the water flow again, allowing the sludge or other impurities in the water to continue to settle. The settled sludge then flows downward along the inclined tube sedimentation unit 3 and flows to the bottom of the first sedimentation chamber 101. The settled water continues to rise through the upper opening of the inclined tube sedimentation unit 3. Finally, the annular weir 4 filters out the suspended solids that cannot settle. The final settled water flows into the next tank through the drain pipe 105. The inclined tube sedimentation unit 3 makes the sewage flow at an angle during the sedimentation process, which increases the contact time between the sludge and the tube wall, thereby improving the sludge separation efficiency.

[0025] Please refer to this carefully. Figure 2The base 6 has a water storage tank 601 on its surface and an installation groove corresponding to the outer pipe 1 on its surface. The outer pipe 1 is installed inside the installation groove. The base 6 has a first drain pipe 7 inside its interior. The upper end of the first drain pipe 7 corresponds to the drain hole 103 on the inner wall of the second sedimentation chamber. A first solenoid valve is installed on the surface of the first drain pipe 7. The base 6 also has a second drain pipe 8 inside its interior. The upper end of the second drain pipe 8 corresponds to the drain hole 103 on the inner wall of the first sedimentation chamber 101. A second solenoid valve is installed on the surface of the second drain pipe 8.

[0026] Example 2

[0027] Based on Example 1, the inlet pipe 5 is a three-way pipe. Sewage flows into the guide tube from the three-way position. The three-way is close to the inner wall of the guide tube 2 to slow down the water flow. The bottom of the first sedimentation chamber 101 has an inclined sedimentation plate 102 that works with the water passage hole 201 at the bottom of the guide tube 2. The sludge in the water will settle at the bottom of the guide tube 2 due to the angle of the sedimentation plate 102, while the sewage will flow through the water passage hole 201 to the outside of the guide tube 2 and rise slowly. In the upper part of the first sedimentation chamber 101, it passes through the inclined tube sedimentation unit 3, which slows down the water flow again, allowing the sludge or other impurities in the water to continue to settle. The surface of the first sedimentation tank 101 is provided with a drain pipe 105. Before the sewage flows into the next tank, there is a ring-shaped water weir 4 on the inner wall of the vertical double-layer sedimentation tank, which will filter out the suspended solids that cannot be settled. Finally, the sewage flows into the next tank through the drain pipe 105.

[0028] Inside the guide tube 2, at the bottom, are placed a return device and a lifting device. The return device can effectively return the settled sludge to the anoxic tank, and the lifting device can effectively lift the sludge to the septic tank at the front of the system, thus effectively improving the sludge settling rate.

[0029] In use, the device is first installed in a designated location. Then, the worker directly introduces sewage into the guide tube 2 through the inlet pipe 5. After sedimentation, the sludge remains at the bottom, and the remaining water slowly flows from the second sedimentation chamber to the first sedimentation chamber 101 through the water passage 201. It then slowly rises through the inclined tube sedimentation unit 3 and the annular weir 4, and after being filtered layer by layer, it flows into the next pool. The water flow speed is slower than that in the traditional central guide tube 2, resulting in better sedimentation. Furthermore, the concave surface at the bottom of the tank is more conducive to the accumulation of sludge in the sedimentation tank, resulting in a higher sludge concentration in the return liquid. After the first sedimentation, the sewage enters the inclined tube sedimentation unit 3, which slows down the water flow speed again, allowing the sludge or other impurities in the water to continue to settle. The settled sludge then flows downward along the inclined tube sedimentation unit 3 and flows to the bottom of the first sedimentation chamber 101. The settled water continues to rise through the upper opening of the inclined tube sedimentation unit 3. Finally, the annular weir 4 filters out the suspended solids that cannot settle. Finally, the settled water flows into the next pool through the drain pipe 105.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A vertical double-layer sedimentation tank for wastewater treatment, comprising a base (6) and an outer pipe (1) installed on the upper surface of the base (6), characterized in that: It also includes a guide tube (2) installed inside the outer tube (1), the surface of the guide tube (2) is embedded with an inclined tube sedimentation unit (3) and an annular water weir (4), the annular water weir (4) is set above the inclined tube sedimentation unit (3), the side of the outer tube (1) is provided with an inlet pipe (5), and the other end of the inlet pipe (5) is attached to the inner wall of the guide tube (2); A first sedimentation chamber (101) is formed between the outer tube (1) and the guide tube (2); The guide tube (2) has water passage holes (201) on its surface.

2. The vertical double-layer sedimentation tank for wastewater treatment according to claim 1, characterized in that: A sedimentation plate (102) is fixedly installed at the lower end of the outer tube (1), and the lower end of the guide tube (2) is installed on the surface of the sedimentation plate (102). Drainage holes (103) are opened on the inner wall of the first sedimentation chamber (101) and the inner wall of the second sedimentation chamber. An observation hole (104) is opened on the upper surface of the outer tube (1), and the surface of the sedimentation plate (102) is concave.

3. A vertical double-layer sedimentation tank for wastewater treatment according to claim 1, characterized in that: The base (6) has a water storage tank (601) on its surface and an installation groove corresponding to the outer tube (1) on its surface. The outer tube (1) is installed inside the installation groove.

4. A vertical double-layer sedimentation tank for wastewater treatment according to claim 1, characterized in that: The base (6) has a first drain pipe (7) inside. The upper end of the first drain pipe (7) corresponds to the drain hole (103) on the inner wall of the second sedimentation chamber. A first solenoid valve is installed on the surface of the first drain pipe (7).

5. A vertical double-layer sedimentation tank for wastewater treatment according to claim 1, characterized in that: The base (6) has a second drain pipe (8) inside. The upper end of the second drain pipe (8) corresponds to the drain hole (103) on the inner wall of the first sedimentation chamber (101). A second solenoid valve is installed on the surface of the second drain pipe (8).

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