Sieve mesh type flocculation air flotation filtering device

Abstract

The utility model discloses a sieve mesh type flocculation air floatation filtering device, which relates to the technical field of environment-friendly sewage treatment, and specifically comprises a coagulation reaction area, a flocculation reaction area, a contact chamber, a separation chamber, a flow adjusting area, a clear water area and an air floatation structure, the upper part of the coagulation reaction area is externally connected with a water inlet pipeline, and the lower part in the coagulation reaction area is provided with a sieve plate area; a medicament pipeline is arranged at the top of the coagulation reaction area and is externally connected to a coagulation medicament device; another sieve plate area is arranged at the upper part in the flocculation reaction area, another medicament pipeline is arranged at the lower part of the flocculation reaction area, and the other medicament pipeline is externally connected to a flocculation medicament device. According to the sieve hole type flocculation air flotation filtering device, by designing the sieve plate area, coagulation and flocculation unpowered mixed reaction is achieved, and energy conservation and consumption reduction are achieved; the fiber ball filter material layer is arranged in the separation chamber, the sewage purification efficiency is improved, and meanwhile, the upper and lower bearing pore plates of the filter material area are detachable, so that the fiber ball filter material layer is convenient to replace and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of environmentally friendly sewage treatment, in particular to a sieve-type flocculation flotation filtering device. Background Art

[0002] The main sources of oily wastewater are steel refining, industrial production, petroleum extraction, pesticide and food processing and production, etc., and these oil pollutants mainly exist in four forms, namely dissolved oil, dispersed oil, floating oil and emulsified oil. Oily wastewater will seriously affect the quality of water bodies, resulting in a significant reduction in the utilization value of water resources. Therefore, oily wastewater needs to be deoiled when discharged. In the prior art, some schemes for wastewater oil removal are disclosed, such as the authorized patent with application number CN202222679227.6, which discloses a wastewater oil separation and oil removal equipment, and the authorized patent with application number CN202021280031.4, which discloses a high-performance chemical oil removal device for wastewater treatment.

[0003] When the above scheme is in use, the oil in the sewage is aggregated by adding an oil removal flocculant to the sewage, and the aggregated oil is then floated to the water surface or settled to the bottom of the water, thereby achieving the purpose of purifying the water quality. During the application of this method, the oil removal flocculant and the sewage need to be mixed evenly, and the above scheme uses mechanical stirring to mix the sewage and the oil removal flocculant evenly, resulting in high energy consumption; and when the above scheme is in use, the treated sewage needs to be discharged before the sewage to be treated can be injected into the equipment, and continuous operation cannot be performed, affecting the sewage oil removal efficiency; based on this, the present application proposes a sieve-type flocculation flotation filter device. Utility Model Content

[0004] The utility model provides a mesh flocculation flotation filter device, which solves the problem that the mechanical stirring method is used to mix sewage and oil removal flocculant evenly, which has high energy consumption and cannot work continuously, thus affecting the oil removal efficiency of sewage.

[0005] The utility model provides the following technical solutions: a sieve-type flocculation flotation filtration device, comprising a coagulation reaction zone, a flocculation reaction zone, a contact chamber, a separation chamber, a flow adjustment zone, a clean water zone and an air flotation structure, wherein the upper portion of the coagulation reaction zone is externally connected to a water inlet pipe, a sieve plate zone is provided in the lower portion of the coagulation reaction zone, a reagent pipeline is provided at the top of the coagulation reaction zone, and the reagent pipeline is externally connected to a coagulation reagent device; another sieve plate zone is provided in the upper portion of the flocculation reaction zone, another reagent pipeline is provided in the lower portion of the flocculation reaction zone, and the other reagent pipeline is externally connected to a flocculation reagent device, and the lower portion of the coagulation reaction zone is connected to the lower portion of the flocculation reaction zone through a connecting flow channel;

[0006] The air flotation structure comprises an air dissolving tank, an air dissolving water pump and a releaser, wherein the water inlet end of the air dissolving tank is connected to the clean water area through the air dissolving water pump, and the air dissolving water discharge end of the air dissolving tank is connected to the releaser through the air dissolving water pipeline, and the releaser is located at the bottom end of the inner cavity of the contact chamber; a guide zone is provided between the flocculation reaction zone and the contact chamber, and flow holes are provided at the bottom of the guide zone and the bottom of the contact chamber, and an orifice plate is provided at the bottom end of the inner cavity of the contact chamber, and the orifice plate is located between the releaser and the flow hole;

[0007] A separation chamber is provided between the contact chamber and the clean water area, a water collection system is provided at the lower part of the separation chamber, the water collection system is externally connected to the interior of the flow adjustment area, a scraper and a scum area are provided at the upper part of the separation chamber, a fiber ball filter material layer is provided between the water collection system and the scraper; a flow adjustment area is provided at the upper part of one side of the clean water area, water outlet from the water collection system enters the clean water area through the flow adjustment area, and the upper part of the clean water area is externally connected to a water outlet pipe.

[0008] Preferably, the bottom of the inner cavity of the coagulation reaction zone and the bottom of the inner cavity of the flocculation reaction zone are both provided with a mud bucket sedimentation area, and the connecting flow channel is located between the sieve plate area and the mud bucket sedimentation area.

[0009] Preferably, the sieve plate area is composed of a plurality of layers of plates, the uniform opening diameter of the layers is 10 to 30 mm, and the layers are arranged in a staggered manner longitudinally.

[0010] Preferably, water distribution holes are evenly arranged on the orifice plate, and an adjusting rod is provided in the flow adjustment area, and the bottom end of the adjusting rod is adapted to the water outlet end of the water collection system.

[0011] Preferably, another mud bucket sedimentation area is provided at the bottom of the separation chamber, and the water collection system is located between the other mud bucket sedimentation area and the fiber ball filter material layer.

[0012] Preferably, a detachable and movable supporting perforated plate is provided on the upper and lower parts of the fiber ball filter material layer.

[0013] Preferably, the scraper acts on the upper part between the contact chamber and the scum zone.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The sieve-type flocculation flotation filter device realizes the non-powered mixing reaction of coagulation and flocculation by designing the sieve plate area, which saves energy and reduces consumption; a fiber ball filter layer is arranged in the separation chamber to improve the sewage purification efficiency. At the same time, the upper and lower supporting holes in the filter area are designed to be detachable, which is convenient for the replacement and maintenance of the fiber ball filter layer.

[0016] 2. The sieve-type flocculation flotation filtration device can perform continuous sewage oil and slag removal operations, improving the working efficiency and practicality of the device; and through the design of the flow adjustment area, the flow adjustment area can control the system sewage flow, which is conducive to the stable operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structural principle of the utility model;

[0018] Figure 2 The utility model structure Figure 1 Schematic diagram from top view.

[0019] In the figure: 1. coagulation reaction zone; 2. flocculation reaction zone; 3. diversion zone; 4. contact chamber; 5. separation chamber; 6. clean water zone; 7. scum zone; 8. flow adjustment zone; 9. releaser; 10. scraper; 11. dissolved air pump; 12. dissolved air tank; 13. water collection system; 14. sieve plate zone; 15. orifice plate; 16. fiber ball filter material layer; 17. adjustment rod; 18. water inlet pipe; 19. water outlet pipe; 20. coagulant device; 21. flocculation device; 22. connecting flow channel. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] The utility model provides a sieve-type flocculation flotation filtering device, comprising a coagulation reaction zone 1, a flocculation reaction zone 2, a contact chamber 4, a separation chamber 5, a flow adjustment zone 8, a clear water zone 6 and an air flotation structure.

[0022] The upper part of the coagulation reaction zone 1 is connected to an inlet pipe 18, and the oily sewage can enter the coagulation reaction zone 1 through the inlet pipe 18. The lower part of the coagulation reaction zone 1 is provided with a sieve plate area 14, which is composed of a plurality of layers of plates, and the uniform opening diameter of the layers is 10 to 30 mm, and the layers are arranged in a staggered manner in the vertical direction. A reagent pipeline is provided at the top of the coagulation reaction zone 1, and the reagent pipeline is externally connected to the coagulation reagent device 20. The coagulation reagent of the coagulation reagent device 20 is transported to the upper part of the coagulation reaction zone 1 through the reagent pipeline. In the actual use of the device, when the sewage enters the coagulation reaction zone 1 through the inlet pipe 18, the coagulation reagent device 20 simultaneously puts the coagulation reagent into the coagulation reaction zone 1 through the reagent pipeline, and the sewage and the coagulation reagent flow downward through the sieve plate area 14 at the same time and can be mixed evenly.

[0023] Another sieve plate area 14 is provided in the upper part of the flocculation reaction zone 2, and another reagent pipeline is provided in the lower part of the flocculation reaction zone 2. The other reagent pipeline is externally connected to the flocculation reagent device 21. The flocculation reagent device 21 adds the flocculation reagent to the lower part of the flocculation reaction zone 2 through another reagent pipeline, and the lower part of the coagulation reaction zone 1 is connected with the lower part of the flocculation reaction zone 2 through the connecting flow channel 22. Through the setting of the connecting flow channel 22, the sewage fully mixed with the coagulant can enter the lower part of the flocculation reaction zone 2 through the connecting flow channel 22. During the continuous upward flow of the sewage, the flocculation reagent and the sewage can be fully mixed, and the oil in the sewage can form flocculent particles.

[0024] The bottom of the inner cavity of the above-mentioned coagulation reaction zone 1 and the bottom of the inner cavity of the flocculation reaction zone 2 are both provided with a mud bucket settling area, and the connecting flow channel 22 is located between the screen plate area 14 and the mud bucket settling area. The mud bucket settling area can be used to collect sludge, which is convenient for sludge treatment.

[0025] From the above description of the coagulation reaction zone 1 and the flocculation reaction zone 2, it can be seen that the device realizes the unpowered mixing reaction of coagulation and flocculation by designing the sieve plate zone, thereby saving energy and reducing consumption.

[0026] A guide zone 3 is provided between the flocculation reaction zone 2 and the contact chamber 4. The sewage fully mixed with the coagulant and the flocculation agent can enter the guide zone 3. Flow holes are provided at the bottom of the guide zone 3 and the bottom of the contact chamber 4. The sewage in the guide zone 3 can enter the contact chamber 4 through the flow holes.

[0027] An orifice plate 15 is provided at the bottom end of the inner cavity of the contact chamber 4 . The orifice plate 15 is located above the flow hole. Water distribution holes are evenly provided on the orifice plate 15 . The arrangement of the orifice plate 15 facilitates the uniform distribution of sewage to the contact chamber 4 .

[0028] The above-mentioned flotation structure includes an air dissolving tank 12, an air dissolving water pump 11 and a releaser 9. The water inlet end of the air dissolving tank 12 is connected to the clean water area 6 through the air dissolving water pump 11, and the air dissolving water discharge end of the air dissolving tank 12 is connected to the releaser 9 through the air dissolving water pipeline. The releaser 9 is located at the bottom end of the inner cavity of the contact chamber 4; and the orifice plate 15 is located between the releaser 9 and the flow hole. It can be seen from the above description of the air dissolving tank 12 that the air dissolving water is released by the air dissolving water pump 11, the air dissolving tank 12 and the releaser 9, and the sewage flocs can form scum after contacting the air dissolving water. The scum is collected in the upper part of the separation chamber 5.

[0029] A scraper 10 and a scum area 7 are provided at the upper part of the separation chamber 5. The scraper 10 can be used to scrape the scum to the scum area 7, which is convenient for unified treatment of the scum, and the scraper 10 acts on the upper part between the contact chamber 4 and the scum area 7. In some embodiments of the present application, the scraper 10 scheme adopts the scheme published in the authorized patent with application number CN202121821870.7.

[0030] A fiber ball filter material layer 16 is provided in the middle of the separation chamber 5. The fiber ball filter material layer 16 can further adsorb the fine suspended matter remaining in the sewage, thereby improving the efficiency of removing oil and residue from the sewage. A detachable and movable supporting plate is provided on the upper and lower parts of the fiber ball filter material layer 16 to facilitate the maintenance and replacement of the fiber ball filter material layer 16.

[0031] Another mud bucket sedimentation area is provided at the bottom of the separation chamber 5, and a water collection system 13 is provided between the other mud bucket sedimentation area and the fiber ball filter material layer 16. Through the setting of the water collection system 13, the filtered clean water can be pumped away by using the water collection system 13. The water outlet end of the water collection system 13 extends to the inner cavity of the flow adjustment area 8. The flow adjustment area 8 is located at the upper part of one side of the clean water area 6. The clean water after oil and residue removal passes through the flow adjustment area 8 and enters the clean water area 6. The upper part of the clean water area 6 is externally connected to the outlet pipe 19, and the clean water in the clean water area 6 is discharged through the outlet pipe 19.

[0032] An adjusting rod 17 is provided in the flow adjustment area 8, and the bottom end of the adjusting rod 17 is adapted to the water outlet end of the water collection system 13. The adjusting rod 17 can be rotated in the vertical direction to adjust the size of the water outlet end of the water collection system 13, control the water outlet flow of the water collection system 13, and then control the sewage flow of the device, which is conducive to the stable operation of the device.

[0033] The electrical components involved in this application are all prior art, and technicians in this field are familiar with their connection methods. Through these technicians, all the electrical components in this application are connected to their compatible power supplies through wires, and according to the actual situation, a suitable controller is selected to meet the control requirements. The specific connection and control sequence are described below. The electrical connection is completed in a sequential working order, and the detailed connection means are well known in the art. The following mainly introduces the working principle and process, and no further explanation of the electrical control is given.

[0034] In summary, when the mesh flocculation flotation filter is used, the sewage enters the coagulation reaction zone 1 through the water inlet pipe 18, and at the same time, the coagulant device 20 injects the coagulant into the coagulation reaction zone 1 through the agent pipeline, and the sewage and the coagulant flow downward through the sieve plate area 14 to be evenly mixed, and then the sewage flows into the flocculation reaction zone 2, and then flows upward through the sieve plate area 14 together with the flocculation agent device 21 injected into the flocculation reaction zone 2, the oil in the sewage can be aggregated into flocculent particles, and then enters the contact chamber 4 through the diversion area 3, and the sewage The water flows through the orifice plate 15 for uniform water distribution. The dissolved air water pump 11, the dissolved air tank 12 and the releaser 9 release the dissolved air water. The sewage flocs contact the dissolved air water to form scum. The scum gathers in the upper part of the separation chamber 5 and then enters the scum area 7 through the scraper 10. The sewage continues to flow downward through the fiber ball filter material layer 16 in the middle of the separation chamber 5 to intercept and remove some fine suspended matter. The water treated by the fiber ball filter material layer 16 flows to the flow adjustment area 8 through the water collection system 13, enters the clean water area 6 after the flow is controlled by the regulating rod 17, and is discharged through the outlet pipe 19.

[0035] The standard parts used in the utility model can be purchased from the market, and the special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art and will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A mesh-type flocculation flotation filtration device, comprising a coagulation reaction zone (1), a flocculation reaction zone (2), a contact chamber (4), a separation chamber (5), a flow adjustment zone (8), a clean water zone (6) and an air flotation structure, characterized in that: The upper part of the coagulation reaction zone (1) is externally connected to a water inlet pipe (18); the lower part of the coagulation reaction zone (1) is provided with a sieve plate area (14); the top of the coagulation reaction zone (1) is provided with a reagent pipeline, and the reagent pipeline is externally connected to a coagulation reagent device (20); the upper part of the flocculation reaction zone (2) is provided with another sieve plate area (14); the lower part of the flocculation reaction zone (2) is provided with another reagent pipeline, and the other reagent pipeline is externally connected to a flocculation reagent device (21); and the lower part of the coagulation reaction zone (1) is connected to the lower part of the flocculation reaction zone (2) via a connecting flow channel (22); The air flotation structure comprises an air dissolving tank (12), an air dissolving water pump (11) and a releaser (9); the water inlet end of the air dissolving tank (12) is connected to the clean water area (6) through the air dissolving water pump (11); the air dissolving water discharge end of the air dissolving tank (12) is connected to the releaser (9) through the air dissolving water pipeline; the releaser (9) is located at the bottom end of the inner cavity of the contact chamber (4); a guide area (3) is provided between the flocculation reaction area (2) and the contact chamber (4); flow holes are provided at the bottom of the guide area (3) and the bottom of the contact chamber (4); an orifice plate (15) is provided at the bottom end of the inner cavity of the contact chamber (4); the orifice plate (15) is located between the releaser (9) and the flow hole; A separation chamber (5) is provided between the contact chamber (4) and the clean water zone (6); a water collection system (13) is provided at the lower part of the separation chamber (5); the water collection system (13) is externally connected to the inside of the flow adjustment zone (8); a scraper (10) and a scum zone (7) are provided at the upper part of the separation chamber (5); a fiber ball filter material layer (16) is provided between the water collection system (13) and the scraper (10); a flow adjustment zone (8) is provided at the upper part of one side of the clean water zone (6); water discharged from the water collection system (13) enters the clean water zone (6) through the flow adjustment zone (8); and a water outlet pipe (19) is externally connected to the upper part of the clean water zone (6).

2. A mesh-type flocculation flotation filtration device according to claim 1, characterized in that: The bottom of the inner cavity of the coagulation reaction zone (1) and the bottom of the inner cavity of the flocculation reaction zone (2) are both provided with a mud bucket sedimentation zone, and the connecting flow channel (22) is located between the sieve plate zone (14) and the mud bucket sedimentation zone.

3. A mesh-type flocculation flotation filtration device according to claim 1, characterized in that: The sieve plate area (14) is composed of a plurality of layers of plates, each of which has a uniform opening diameter of 10 to 30 mm, and the layers are arranged in a staggered manner in the longitudinal direction.

4. The mesh-type flocculation flotation filtration device according to claim 1, characterized in that: The orifice plate (15) is evenly provided with water distribution holes, and an adjusting rod (17) is provided in the flow adjustment area (8), and the bottom end of the adjusting rod (17) is adapted to the water outlet end of the water collection system (13).

5. The mesh-type flocculation flotation filtration device according to claim 1, characterized in that: Another mud bucket sedimentation area is provided at the bottom of the separation chamber (5), and the water collection system (13) is located between the other mud bucket sedimentation area and the fiber ball filter material layer (16).

6. The mesh-type flocculation flotation filtration device according to claim 1, characterized in that: The upper and lower parts of the fiber ball filter material layer (16) are both provided with a layer of detachable movable supporting perforated plate.

7. The mesh-type flocculation flotation filtration device according to claim 1, characterized in that: The scraper (10) acts on the upper part between the contact chamber (4) and the scum zone (7).

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