Composite sewage pollutant flotation and precipitation integrated treatment device

Abstract

The utility model discloses a composite sewage pollutant flotation and precipitation integrated treatment device, which belongs to the technical field of sewage treatment and comprises a tank body, an inverted bucket type partition plate is welded in the middle of the tank body, and the interior of the tank body is divided into a reaction bin and a sludge bin through the partition plate. A vertical cylinder is welded to the center of the bottom of the partition plate and communicated with the reaction bin, a collecting barrel is arranged in the center above the partition plate and communicated with the sludge bin through a connecting pipe, the bottom of the cylinder is connected with a horizontal cylinder connecting pipe leading to the outside of the tank body, and a top pipe is arranged in the center of the top of the tank body. A first sludge discharge pipe is arranged at the bottom of the sludge bin. The sewage treatment device flexibly treats sewage with impurity concentration larger than that of water and sewage with more suspended solids and dirty oil, and the sewage treatment efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and particularly relates to a composite sewage pollutant flotation and sedimentation integrated treatment device. Background Art

[0002] Sewage treatment is a process that involves the application of physical, chemical and biological methods to separate or convert harmful substances living in industrial wastewater into harmless substances, thereby ensuring that the wastewater can meet the discharge standards or be reused. Sewage treatment can be divided into production sewage treatment and domestic sewage treatment according to the source. Production sewage includes industrial sewage, agricultural sewage and medical sewage, while domestic sewage is sewage generated in daily life. Therefore, sewage is also divided into sewage with impurity concentration greater than water and sewage with more suspended solids and dirty oil, which requires special separation for this type of sewage. Most of the existing sewage treatment tanks treat sewage through a fixed process, which is inconvenient to flexibly treat sewage with impurity concentration greater than water and sewage with more suspended solids and dirty oil, resulting in low sewage treatment efficiency. Utility Model Content

[0003] The utility model aims to provide a composite sewage pollutant flotation and sedimentation integrated treatment device, which solves the problem of flexible treatment of sewage containing a large amount of sludge or solid suspended matter, sewage containing a large amount of oil, etc.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A composite sewage pollutant flotation and sedimentation integrated treatment device comprises a tank body, an inverted bucket-shaped partition is welded in the middle of the tank body, the tank body is divided into a reaction bin and a sludge bin by the partition, a vertical cylindrical tube is welded at the bottom center of the partition and communicates with the reaction bin, a collecting bucket is arranged at the center above the partition, the collecting bucket is communicated with the sludge bin through a connecting pipe, a horizontal cylindrical tube connecting pipe is connected to the bottom of the cylindrical tube and leads to the outside of the tank body, a top pipe is arranged at the top center of the tank body, and a first row of mud pipes is arranged at the bottom of the sludge bin.

[0006] Preferably, the axial direction of the cylindrical tube connecting tube is tangent to the circumference of the cylindrical tube.

[0007] Preferably, the cylindrical tube connecting pipe is externally connected to a lower cyclone mixer, and the top of the lower cyclone mixer is connected to a lower dosing pipe.

[0008] Preferably, a sludge bin drain pipe is provided on the tank body at the top of the sludge bin.

[0009] Preferably, a buffer plate is welded at the bottom of the interface between the connecting pipe and the partition.

[0010] Preferably, the buffer plate is an L-shaped structure, perpendicular to the flow direction of the connecting pipe, and has an opening facing obliquely downward toward the sludge bin.

[0011] Preferably, a three-way valve is connected between the cylindrical tube connecting pipe and the lower cyclone mixer, the three-way valve is connected to a second mud discharge pipe, and a dissolved air water device is also provided above the tank body; the dissolved air water device comprises a dissolved air spray pipe, a water distribution pipe, a sewage inlet pipe, a sewage inlet pipe joint, and a dissolved air spray pipe joint, a plurality of dissolved air spray pipes are welded to the circumference of the tank body, a dissolved air spray pipe joint is provided at the outer end of the dissolved air spray pipe, the sewage inlet pipe is fixed to the outside of the tank body, and is connected to the dissolved air spray pipe through the water distribution pipe, and the sewage inlet pipe is connected to the sewage inlet pipe joint.

[0012] Preferably, the sewage inlet pipe joint is externally connected to an upper cyclone mixer, and an upper dosing pipe is provided on the upper cyclone mixer.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1) In the treatment of sewage with impurity concentration greater than that of water, it can be treated by the method of reaction and precipitation of sewage and flocculants. Water enters through the bottom of the tank, and the floccules sink to the bottom of the tank as soon as possible to avoid excessive mixing of sewage and upper clean water, which is convenient for the clean water to float up and be extracted; in the treatment of sewage with more solid suspended matter and dirty oil, sewage enters from the dissolved air spray pipe above the tank, which is convenient for the solid suspended matter and dirty oil to be floated to the top of the tank as soon as possible and extracted, and the clean water and sludge precipitated from the middle and bottom of the tank are separated and discharged separately; for sewage with impurity concentration greater than that of water and sewage with more solid suspended matter and dirty oil, flexible treatment is carried out to speed up the sewage treatment efficiency.

[0015] 2) The partition can separate the reaction chamber and the sludge chamber, so that the reaction chamber can accelerate the mixing of sewage and flocculants through the action of water flow, and the sludge chamber can reduce the impact of water flow, so that the floccules in the sludge chamber can form sludge through static sedimentation by their own gravity;

[0016] 3) The axial direction of the cylindrical tube connecting pipe is tangent to the circumference of the cylindrical tube, so that the sewage entering the cylindrical tube through the cylindrical tube can have a spiral upward effect, so that the flocculant and the sewage are fully mixed, and the reaction efficiency of the sewage and the flocculant is accelerated.

[0017] 4) The sludge bin drain outlet of the sludge bin can discharge the clean water separated by static sedimentation of flocs from the top, thereby increasing the cleanliness of the clean water discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a longitudinal sectional view of the tank body of Example 1 of the utility model;

[0019] Figure 2It is a transverse cross-sectional view of the cylindrical tube connecting pipe of Example 1 of the utility model;

[0020] Figure 3 It is a schematic diagram of sewage flow direction and layering in Example 1 of the utility model;

[0021] Figure 4 This is a front view of Embodiment 2 of the present utility model;

[0022] Figure 5 It is a longitudinal sectional view of the tank body of Example 2 of the utility model;

[0023] Figure 6 It is a schematic diagram of sewage flow direction and layering in Example 2 of the utility model;

[0024] Icons: 1. Tank body; 2. Partition; 3. Cylinder; 4. Collecting barrel; 5. Connecting pipe; 6. Cylinder connecting pipe; 7. Top pipe; 8. First mud discharge pipe; 9. Sludge bin; 10. Reaction bin; 11. Lower cyclone mixer; 12. Lower dosing pipe; 13. Sludge bin drain pipe; 14. Buffer plate; 15. Three-way valve; 151. Second mud discharge pipe; 16. Dissolved air water device; 161. Dissolved air water spray pipe; 162. Water distribution pipe; 163. Sewage inlet pipe; 164. Sewage inlet pipe joint; 165. Dissolved air water spray pipe joint; 17. Upper cyclone mixer; 18. Upper dosing pipe. DETAILED DESCRIPTION

[0025] In order to make the purpose, method scheme and advantages of the embodiments of the utility model clearer, the method scheme in the embodiments of the utility model is clearly and completely described. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings herein can be arranged and designed in various different configurations.

[0026] Example 1

[0027] like Figure 1-3As shown, a composite sewage pollutant flotation and sedimentation integrated treatment device comprises a tank body 1, wherein an inverted bucket-shaped baffle plate 2 is welded in the middle of the tank body 1, and the cylindrical tube connecting pipe 6 is externally connected to a lower cyclone mixer 11, and the top of the lower cyclone mixer 11 is connected to a lower dosing pipe 12, which can add flocculants to the sewage entering the tank body 1 to mix, so that the fine particles suspended in the sewage are aggregated into larger particles, thereby accelerating the sedimentation speed, and making the suspended matter quickly form flocculent sedimentation, and the tank body 1 is divided into a reaction chamber 10 and a sludge chamber 9 by the baffle plate 2, and a vertical cylindrical tube is welded at the bottom center of the baffle plate 2. The cylinder 3 is communicated with the reaction bin 10, and a collecting barrel 4 is arranged at the center above the partition 2. The collecting barrel 4 is connected to the sludge bin 9 through a connecting pipe 5. The large diameter of the collecting barrel 4 is used to collect the sediment and enter the sludge bin 9 for isolation and sedimentation to prevent the sediment from being affected by the water flow and affecting the sedimentation efficiency. The bottom of the cylindrical cylinder 3 is connected with a horizontal cylindrical cylinder connecting pipe 6 leading to the outside of the tank body 1, so that the cylindrical cylinder connecting pipe 6 is set as a sewage inlet, and a top pipe 7 is welded at the center of the top of the tank body 1, which is set as a drainage outlet for clean water at the top of the tank body 1. The bottom of the sludge bin 9 is provided with a first mud discharge pipe 8, which is convenient for the centralized discharge of the precipitated sludge.

[0028] Furthermore, the cylindrical tube connecting pipe 6 is tangent to the circumference of the cylindrical tube 3 in the axial direction. Through the tangent structure, the water flow spirals up from the cylindrical tube connecting pipe 6 into the cylindrical tube 3, thereby increasing the mixing efficiency of the sewage and the flocculant and accelerating the flocculation and sedimentation of the sewage.

[0029] Furthermore, a sludge bin drainage pipe 13 is provided on the tank body 1 at the top of the sludge bin 9 to prevent the clean water separated in the sludge bin 9 from mixing with the sewage again, and the clean water separated in the sludge bin 9 can be discharged in a centralized manner, thereby increasing the clean water discharge efficiency.

[0030] Furthermore, a buffer plate 14 is welded at the bottom of the interface between the connecting pipe 5 and the partition 2, which can allow the flocs to enter the sludge bin 9 in the early stage and reduce the impact on the original flocs in the sludge bin 9; the buffer plate 14 is an L-shaped structure, which is perpendicular to the flow direction of the connecting pipe 5 and has an opening facing diagonally downward of the sludge bin 9, so as to prevent the newly entered flocs from flowing to the sludge bin drain pipe 13, and make the newly entered flocs sink quickly by gravity.

[0031] During operation, when treating sewage with an impurity concentration greater than that of water, the main sewage component is suspended matter. The sewage enters the tank body 1 through the cylindrical connecting pipe 6 at the bottom. The axial direction of the cylindrical connecting pipe 6 is tangent to the circumference of the cylindrical tube 3, so that the sewage entering the cylindrical tube 3 through the cylindrical connecting pipe 6 can rise spirally to the reaction bin 10, so that the flocculant and the sewage are fully mixed, and the reaction efficiency of the sewage and the flocculant and the generation of flocs are accelerated. When the flocs are accumulated to be flush with the collecting barrel 4, the generated flocs fall from the collecting barrel 4 into the sludge bin 9 by their own gravity, and the clean water on the top of the tank body 1 is discharged from the top pipe 7, and the sludge formed by the deposition of flocs is discharged from the first sludge discharge pipe 8. The clean water separated at the top of the sludge bin 9 is discharged from the sludge bin drain pipe 13.

[0032] Example 2

[0033] In order to enable flotation stratification treatment of sewage with more suspended solids and oil, improvements are made on the basis of Example 1, such as Figure 4-6 As shown, in this embodiment, a three-way valve 15 is connected between the cylindrical tube connecting pipe 6 and the lower cyclone mixer 11, and the three-way valve 15 is connected to a second mud discharge pipe 151. A dissolved air water device 16 is also provided above the tank body 1; the dissolved air water device 16 includes a dissolved air water spraying pipe 161, a water distribution pipe 162, a sewage water inlet pipe 163, a sewage water inlet pipe joint 164, and a dissolved air water spraying pipe joint 165. A plurality of dissolved air water spraying pipes 161 are welded to the circumference of the tank body 1, so that impurities and dirty oil with a smaller concentration are released in the tiny bubbles of dissolved air water. The floating impurities and dirty oil are intermittently discharged from the top pipe 7 during dynamic flotation to the top of the tank body 1. The outer end of the dissolved air spray pipe 161 is provided with a dissolved air spray pipe joint 165, which is connected by an external dissolved air releaser hose. The sewage inlet pipe 163 is fixed to the outside of the tank body 1 and is connected to the dissolved air spray pipe 161 through a water distribution pipe 162. The sewage inlet pipe 163 is connected with a sewage inlet pipe joint 164, which is close to the top of the tank body 1, so that the solid suspended matter and dirty oil with smaller density can float and be discharged from the top of the tank body 1 as soon as possible.

[0034] Furthermore, the sewage inlet pipe joint 164 is externally connected to an upper cyclone mixer 17, and an upper dosing pipe 18 is provided on the upper cyclone mixer 17, which can add flocculant to the sewage entering the tank body 1 to mix the fine particles suspended in the sewage so as to aggregate into larger particles, thereby accelerating the sedimentation speed and allowing the suspended matter to quickly form flocculent sediments.

[0035] During operation, when treating sewage with more solid suspended matter and dirty oil, which contains both pollutants with a concentration lower than that of water and pollutants with a concentration higher than that of water, the three-way valve 15 is switched to connect the cylindrical tube connecting pipe 6 with the second mud discharge pipe 151. The sewage enters the tank body 1 from the upper cyclone mixer 17 and the upper dosing pipe 18 through the sewage inlet pipe joint 164 after adding flocculant. The sewage is contacted by the tiny bubbles sprayed by the dissolved air spray pipe 161, so that the suspended matter and dirty oil in the sewage float to the top of the tank body. The impurities with a larger concentration form flocs under the flocculation effect of the flocculant and sink to the bottom of the sludge bin 9 and the reaction bin 10. The sewage in the tank body 1 is separated into floating matter, clean water and flocs from the upper, middle and lower parts. The floating matter is intermittently discharged through the top pipe 7. The clean water is discharged from the sludge bin drainage pipe 13 through the static sedimentation separation in the sludge bin 9. The sludge precipitated by the flocs is discharged from the first mud discharge pipe 8 and the second mud discharge pipe 151 respectively.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An integrated treatment device for flotation and sedimentation of composite sewage pollutants, comprising a tank (1), characterized in that: An inverted bucket-shaped partition (2) is welded in the middle of the tank body (1). The tank body (1) is divided into a reaction chamber (10) and a sludge chamber (9) by the partition (2). A vertical cylindrical tube (3) is welded at the center of the bottom of the partition (2) and communicates with the reaction chamber (10). A collecting bucket (4) is arranged at the center above the partition (2). The collecting bucket (4) is communicated with the sludge chamber (9) through a connecting pipe (5). The bottom of the cylindrical tube (3) is connected to a horizontal cylindrical tube connecting pipe (6) leading to the outside of the tank body (1). A top pipe (7) is arranged at the center of the top of the tank body (1). A first sludge discharge pipe (8) is arranged at the bottom of the sludge chamber (9).

2. The integrated flotation and sedimentation treatment device for composite sewage pollutants according to claim 1 is characterized in that: The cylindrical tube connecting pipe (6) is tangent to the circumference of the cylindrical tube (3) in the axial direction.

3. The integrated treatment device for flotation and sedimentation of composite sewage pollutants according to claim 2 is characterized in that: The cylindrical tube connecting pipe (6) is externally connected to a lower cyclone mixer (11), and the top of the lower cyclone mixer (11) is connected to a lower drug adding pipe (12).

4. The integrated treatment device for flotation and sedimentation of composite sewage pollutants according to claim 1 is characterized in that: A sludge bin drainage pipe (13) is provided on the tank body (1) at the top of the sludge bin (9).

5. The integrated flotation and sedimentation treatment device for composite sewage pollutants according to claim 1 is characterized in that: A buffer plate (14) is welded to the bottom of the interface between the connecting pipe (5) and the partition plate (2).

6. The integrated flotation and sedimentation treatment device for composite sewage pollutants according to claim 5 is characterized in that: The buffer plate (14) is an L-shaped structure, perpendicular to the flow direction of the connecting pipe (5), and has an opening facing obliquely downward toward the sludge bin (9).

7. The integrated flotation and sedimentation treatment device for composite sewage pollutants according to claim 1 is characterized in that: A three-way valve (15) is connected between the cylindrical tube connecting pipe (6) and the lower cyclone mixer (11), the three-way valve (15) is connected to a second mud discharge pipe (151), and a dissolved air and water device (16) is also provided above the tank body (1); The dissolved air water device (16) comprises a dissolved air water spray pipe (161), a water distribution pipe (162), a sewage water inlet pipe (163), a sewage water inlet pipe joint (164), and a dissolved air water spray pipe joint (165). The plurality of dissolved air water spray pipes (161) are circumferentially welded to the tank body (1). The outer end of the dissolved air water spray pipe (161) is provided with a dissolved air water spray pipe joint (165). The sewage water inlet pipe (163) is fixed to the outside of the tank body (1) and connected to the dissolved air water spray pipe (161) via the water distribution pipe (162). The sewage water inlet pipe (163) is connected to the sewage water inlet pipe joint (164).

8. The integrated treatment device for flotation and sedimentation of composite sewage pollutants according to claim 7 is characterized in that: The sewage inlet pipe joint (164) is externally connected to an upper cyclone mixer (17), and an upper drug adding pipe (18) is arranged on the upper cyclone mixer (17).

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