Precipitation device for removing turbidity

Abstract

The utility model relates to a sedimentation device for removing turbidity, which comprises a sedimentation tank, the inside of the sedimentation tank is divided into a primary sedimentation area, an air floatation clarification area and a water outlet area along the water flow direction, the bottom of the air floatation clarification area is provided with a dissolved air releaser, and the upper part of the air floatation clarification area is provided with a foam scraping machine; substances formed on the surface layer of the air flotation clarification area are scraped to a foam collecting channel of the water outlet area through the foam scraping machine. The device has the beneficial effects that the water flow area, the inclined tube settling area and the clear water area are arranged in the settling area, so that heavier floc particles, lighter particles and fine particles can be intercepted through settling clarification in three stages, the effect of intensively removing turbidity is realized, and the water treatment difficulty of algae-containing water and low-temperature and low-turbidity water is reduced; the device is simple in structure, convenient to operate and simple and effective in water treatment mode.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of water supply treatment, specifically a kind of sedimentation device for removing turbidity. BACKGROUND

[0002] In water supply treatment, coagulation sedimentation unit is often provided, and the coagulation sedimentation effect directly determines the water treatment effect. However, the coagulation sedimentation treatment of algae-containing water and low-temperature low-turbidity raw water is very difficult. After coagulation, the flocculation formed from algae-containing water is very light and not easy to settle. In low-temperature low-turbidity water, the coagulant is difficult to hydrolyze, and the alum flowers formed are small and loose and not easy to settle. If the removal effect is strengthened by increasing the dosage of reagent, adding a coagulation aid, or increasing the reflux facility, the water treatment cost will increase, and the management and maintenance difficulty will increase.

[0003] Therefore, how to improve the technology to improve the turbidity removal effect is a problem to be solved at present. CONTENT OF THE UTILITY MODEL

[0004] The utility model provides a kind of sedimentation device for removing turbidity to be used in the sedimentation device of algae-containing water and low-temperature turbidity water, to reduce the water treatment difficulty, and improve the sludge discharge measure to prevent the sludge discharge pipe from being blocked.

[0005] The technical scheme for solving the above technical problems is as follows: a kind of sedimentation device for removing turbidity, including sedimentation tank, the sedimentation tank is divided into preliminary sedimentation zone, air floatation clarification zone, outlet water area along water flow direction, the bottom of air floatation clarification zone is equipped with dissolved air release device, and the upper portion is equipped with skimmer, and the material formed on the surface of air floatation clarification zone is scraped to the set foam canal of outlet water area by the skimmer.

[0006] As a further technical scheme, it further includes a water inlet channel connected to the preliminary sedimentation zone, a partition wall is provided at the communication part of the water inlet channel and the preliminary sedimentation zone, and the water flow of the water inlet channel enters the preliminary sedimentation zone through the horn-type perforation in the partition wall.

[0007] As a further technical scheme, a plurality of horn-type perforations are uniformly distributed along the height direction of the partition wall.

[0008] As a further technical scheme, the outlet water area is sequentially provided with a water flow area, an inclined pipe sedimentation area and a clear water area from bottom to top, and the water body of the air floatation clarification zone sequentially passes through the water flow area, the inclined pipe sedimentation area and the clear water area before entering the outlet water channel.

[0009] The bottom of the set foam canal is located between the inclined pipe sedimentation area and the clear water area, and the water inlet direction of the set foam canal is towards the air floatation clarification zone.

[0010] As a further technical scheme, a sludge collecting area is arranged at the bottom of the sedimentation tank.

[0011] The sludge collecting area is provided with a conical hopper, a sludge collecting branch pipe, a sludge collecting main pipe and a sludge pump, the sludge outlet of the conical hopper is communicated with the sludge collecting main pipe through the sludge collecting branch pipe, and the sludge outlet of the sludge collecting main pipe is connected with the sludge pump.

[0012] As a further technical scheme, a flushing valve is arranged at one end of the sludge collecting branch pipe close to the sludge inlet, and the flushing valve is connected with an external flushing pipeline.

[0013] As a further technical scheme, a maintenance valve is arranged at one side of the sludge collecting main pipe close to the sludge pump.

[0014] As a further technical scheme, the conical hopper is arranged at the bottom of the preliminary sedimentation area, the air floatation clarification area and the water outlet area.

[0015] As a further technical scheme, a pneumatic sludge discharge valve is arranged at the sludge inlet end of the sludge collecting branch pipe.

[0016] 1. The water flow area, the inclined pipe sedimentation area and the clear water area are arranged in the sedimentation area, the relatively heavy flocculent particles, the relatively light particles and the small particles can be intercepted through three-stage sedimentation and clarification, the effect of strengthening removal of turbidity is realized, and the water treatment difficulty of algae-containing water and low-temperature and low-turbidity water is reduced.

[0017] 2. The sludge suction is carried out in different areas according to the deposition conditions of different areas in the sedimentation tank, and the deposition is prevented. In addition, the conical hopper, the sludge collecting branch pipe and other structural designs are used, the sludge is collected to the conical hopper by the self-weight action of the sludge, and then the sludge is sucked and discharged by the sludge pump. In addition, the flushing valve on the sludge collecting pipe branch pipe can be used as a reserved high-pressure water flushing interface to be connected with the external flushing pipeline, the sludge collecting branch pipe and the sludge collecting main pipe can be flushed, and the sludge deposition in the sludge discharge route is further avoided.

[0018] 3. The structure of the utility model can flexibly discharge sludge according to the sludge deposition conditions, is energy-saving and convenient, and is not easy to cause sludge deposition. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of the sedimentation device for removing turbidity.

[0020] In the drawings, the components represented by the numbers are listed as follows:

[0021] The preliminary sedimentation area 1;

[0022] Floatation clarification zone 2, dissolved air release device 21, skimmer 22;

[0023] Water outlet zone 3, foam collection channel 31, water flow zone 32, inclined tube sedimentation zone 33, clear water zone 34;

[0024] Water inlet channel 4, partition wall 5, horn-shaped perforation 51, water outlet channel 6;

[0025] Sludge collection zone 7, conical hopper 71, sludge collection branch pipe 72, pneumatic sludge discharge valve 721, flushing valve 722, sludge collection main pipe 73, maintenance valve 731, slurry pump 74. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0027] In the description of the present application, the terms "first", "second" are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified.

[0028] In the description of the present application, the term "for example" is used to indicate "as an example, illustration or explanation". Any embodiment described as "for example" in the present application is not necessarily interpreted as more preferred or more advantageous than other embodiments. The following description is given in order to enable any person skilled in the art to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that those skilled in the art can realize the present application without using these specific details. In other examples, well-known structures and processes will not be described in detail to avoid unnecessary details making the description of the present application obscure. Therefore, the present application is not intended to be limited to the shown embodiments, but is consistent with the broadest scope of principles and features disclosed in the present application.

[0029] Embodiment 1

[0030] The embodiment utilizes the physical characteristics of the floc particles, fully utilizes the particle settling characteristics, and provides a solution for the difficult-to-removal situation of the floc formed by the algae-containing water, low-temperature and low-turbidity water by the way of natural sedimentation of the heavier floc, floating sludge salvage of the lighter floc through air entrainment, and strengthened interception of the residual floc through the inclined pipe, that is, the floc can be effectively intercepted, the turbidity of the effluent is reduced, and the stability and water quality guarantee rate of the effluent are improved.

[0031] Specifically, the embodiment provides a sedimentation device for removing turbidity, referring to Figure 1 (wherein the upper arrow represents the water flow direction, and the lower arrow represents the sludge flow direction), comprising a sedimentation tank, which is divided into a preliminary sedimentation zone 1, an air flotation clarification zone 2 and an effluent zone 3 along the water flow direction, the air flotation clarification zone 2 is provided with a dissolved air release device 21 at the bottom and a skimmer 22 at the upper part, and the skimmer 22 is used to scrape the substances formed on the surface of the air flotation clarification zone 2 to the skimming channel 31 of the effluent zone 3.

[0032] For example, the sedimentation tank is rectangular, and the coagulated water body enters the preliminary sedimentation zone 1, the air flotation clarification zone 2 and the effluent zone 3 in turn, so that the preliminary sedimentation zone 1 intercepts the heavier floc particles, the air flotation clarification zone 2 intercepts the lighter floc particles, and the effluent zone 3 intercepts the residual particles in the water body, so that the finally treated water body is discharged to the next water treatment unit.

[0033] The dissolved air release device 21 in the air flotation clarification zone 2 is arranged to compress air to distribute the air to the water body through the dissolved air release device 21 to form fine bubbles to entrain the lighter floc particles to the surface layer of the water body, and the skimmer 22 arranged at the upper part of the air flotation clarification zone 2 is used to scrape the formed surface layer substances to the skimming channel 31, and the skimming channel 31 is used to transmit the floc particles on the surface layer of the water body to the sludge treatment system (not shown in the figure) through the pipe channel.

[0034] In the specific implementation process, the utility model further includes a water inlet channel 4 connected with the preliminary sedimentation zone 1, a partition wall 5 is arranged at the communication part of the water inlet channel 4 and the preliminary sedimentation zone 1, and the water flow in the water inlet channel 4 enters the preliminary sedimentation zone 1 through the horn-shaped perforations 51 in the partition wall 5, that is, the water flow in the water inlet channel 4 is uniformly distributed to the sedimentation tank through the partition wall 5, so that the water flow can slowly and uniformly enter the preliminary sedimentation zone 1, and the short flow phenomenon is avoided.

[0035] Further, a plurality of horn-shaped perforations 51 are uniformly distributed along the height direction of the partition wall 5 to adapt to different requirements, that is, the water body in the water inlet channel 4 can also be applicable when the water body height is high.

[0036] In the implementation process, the water outlet area 3 is sequentially provided with a water flow area 32, an inclined pipe precipitation area 33 and a clear water area 34 from bottom to top, and the water body in the air flotation clarification area 2 sequentially passes through the water flow area 32, the inclined pipe precipitation area 33 and the clear water area 34 and then enters the water outlet channel 6; the bottom of the scum collecting channel 31 is located between the inclined pipe precipitation area 33 and the clear water area 34, and the water inlet of the scum collecting channel 31 is directed towards the air flotation clarification area 2, so as to facilitate the collection of the surface material scraped by the scum scraping machine 22.

[0037] For example, the inclined pipe precipitation area 33 is provided with an inclined pipe to intercept the residual flocculation particles in the water body in the water outlet area 3, and the treated water body is discharged to the water outlet channel 6 through the clear water area 34. It can be explained that the water outlet channel 6 is connected to an external pipeline to transmit the water in the water outlet channel 6 to the next water treatment unit.

[0038] In the implementation process, the embodiment further includes a sludge collecting area 7 arranged at the bottom of the precipitation tank to collect the sludge at the bottom of the precipitation tank. It can be explained that the sludge collecting area 7 is not arranged at the lower part of the water inlet channel 4.

[0039] The sludge collecting area 7 is provided with a conical hopper 71, a sludge collecting branch pipe 72, a sludge collecting main pipe 73 and a slurry pump 74. The sludge outlet of the conical hopper 71 is connected to the sludge collecting main pipe 73 through the sludge collecting branch pipe 72, and the sludge outlet of the sludge collecting main pipe 73 is connected to the slurry pump 74, so that the sludge sinks under the action of gravity and is then discharged through the sludge collecting branch pipe 72 and the sludge collecting main pipe 73.

[0040] Further, the bottom of the preliminary precipitation area 1, the air flotation clarification area 2 and the water outlet area 3 is provided with the conical hopper 71, and the sludge can be discharged according to the sludge accumulation in each area. The sludge inlet of the sludge collecting branch pipe 72 is provided with a pneumatic sludge discharge valve 721, and the corresponding pneumatic sludge discharge valve 721 can be opened according to the sludge accumulation in each area.

[0041] More specifically, the sludge collecting branch pipe 72 is provided with a flushing valve 722 at one end close to the sludge inlet, which is connected to an external flushing pipeline through the flushing valve 722, so as to flush each device in the sludge collecting route and avoid blockage, thereby further improving the sludge collecting efficiency.

[0042] The sludge collecting main pipe 73 is provided with a maintenance valve 731 at one side close to the slurry pump 74. According to the sludge collecting amount in different areas, the pneumatic sludge discharge valve 721 at the bottom of the conical hopper 71 and the slurry pump 74 can be opened at different frequencies to suck the sludge and discharge the sludge from the conveying pipeline into a sludge treatment system.

[0043] When the sludge collecting branch pipe 72 is clogged, an external flushing pipe can be connected with the flushing valve 722, and the flushing valve 722 is opened to perform high-pressure flushing on the pipe section, so that the pipe clogging is improved. Therefore, the structure of the embodiment can perform sludge suction in different zones according to the clogging conditions of the zones, and can pump the sludge to a sludge treatment unit under a certain pressure, so that the sludge clogging is reduced.

[0044] The utility model is realized as follows:

[0045] 1. The water body after coagulation firstly enters the water inlet channel 4 through the water inlet pipe, and then is uniformly distributed to the primary sedimentation area 1 of the sedimentation tank through the partition wall 5, so that the water flow slowly and uniformly enters, and the short flow phenomenon is avoided;

[0046] 2. The water body passes through the primary sedimentation area 1, and the flocculation particles with relatively heavy specific gravity and easy to precipitate are precipitated at the bottom of the primary sedimentation area through natural precipitation;

[0047] 3. The water body treated by the primary sedimentation area 1 enters the air flotation clarification area 2, compressed air is distributed to the water body through the dissolved gas release device 21, and the fine bubbles formed by the compressed air carry the flocculation particles with relatively light specific gravity to the water surface layer; the skimmer 22 scrapes the surface layer material to the skimming channel 31, and the flocculation particles in the surface layer are transported to the sludge treatment system (not shown in the figure) through the skimming channel 31;

[0048] 4. The water body treated by the air flotation clarification area 2 enters the water outlet area 3, and the inclined pipe device intercepts the residual flocculation particles in the water body, and the water body enters the water collecting tank at the upper part of the inclined pipe device (at this time, the water body entering the water collecting tank is a clarified water body);

[0049] 5. The water in the water collecting tank enters the water outlet channel 6 and is input to the next water treatment unit through the water outlet pipe;

[0050] It should be noted that in the above process, the sludge deposited in each area is collected through the conical hopper 71, and then it is determined whether to open the corresponding pneumatic sludge discharge valve 721 to discharge sludge according to the sludge clogging condition, so as to avoid clogging. When the sludge needs to be discharged, the slurry pump 74 and the maintenance valve 731 are always opened to suck the sludge; when the sludge in the pipe is clogged, the flushing pipe can be connected and the flushing valve 722 is opened to perform high-pressure flushing on the pipe section;

[0051] The structure of the utility model can perform sludge suction in different zones according to the clogging conditions of the zones, and the sludge can be pumped to the sludge treatment unit under a certain pressure by the sludge pump, so that the sludge clogging is reduced. In addition, the flushing valve 722 and the like are combined to improve the clogging condition.

[0052] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0053] Although preferred embodiments of the application have been described, those skilled in the art will be able to make additional changes and modifications to these embodiments once they have been given the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the application.

[0054] Obviously, those skilled in the art can make various modifications and variations to the application without departing from the spirit and scope of the application. Thus, if these modifications and variations of the application fall within the scope of the claims of the application and their equivalents, the application also intends to include these modifications and variations.

Claims

1. A sedimentation device for removing turbidity, characterized in that The sedimentation tank comprises a preliminary sedimentation area (1), a gas floatation clarification area (2) and a water outlet area (3) arranged in sequence along the water flow direction.

2. A sedimentation device for removing turbidity according to claim 1, characterized in that The water inlet channel (4) is provided with a partition wall (5) at the connection position with the preliminary sedimentation area (1), and the water flow of the water inlet channel (4) enters the preliminary sedimentation area (1) through the horn-shaped perforations (51) in the partition wall (5).

3. A sedimentation device for removing turbidity according to claim 2, characterized in that The horn-shaped perforations (51) are uniformly distributed along the height direction of the partition wall (5).

4. A sedimentation device for removing turbidity according to claim 2, characterized in that The water flow area (32), the inclined pipe sedimentation area (33) and the clear water area (34) are sequentially arranged in the water outlet area (3) from bottom to top, and the water body of the gas floatation clarification area (2) sequentially passes through the water flow area (32), the inclined pipe sedimentation area (33) and the clear water area (34) and then enters the water outlet channel (6). The bottom of the foam collecting channel (31) is located between the inclined pipe sedimentation area (33) and the clear water area (34), and the water inlet of the foam collecting channel (31) is directed towards the gas floatation clarification area (2).

5. A sedimentation device for removing turbidity according to any one of claims 1-4, characterized in that The sludge collecting area (7) is arranged at the bottom of the sedimentation tank. The sludge collecting area (7) is provided with a conical hopper (71), a sludge collecting branch pipe (72), a sludge collecting main pipe (73) and a slurry pump (74), the sludge outlet of the conical hopper (71) is communicated with the sludge collecting main pipe (73) through the sludge collecting branch pipe (72), and the sludge outlet of the sludge collecting main pipe (73) is connected with the slurry pump (74).

6. A sedimentation device for removing turbidity according to claim 5, characterized in that The flushing valve (722) is arranged at the end of the sludge collecting branch pipe (72) close to the sludge inlet and connected with the external flushing pipeline.

7. A sedimentation device for removing turbidity according to claim 5, characterized in that The maintenance valve (731) is arranged at the side of the sludge collecting main pipe (73) close to the slurry pump (74).

8. A sedimentation device for removing turbidity according to claim 5, characterized in that The conical hopper (71) is arranged at the bottom of the preliminary sedimentation area (1), the gas floatation clarification area (2) and the water outlet area (3).

9. A sedimentation device for removing turbidity according to claim 5, characterized in that The pneumatic sludge discharge valve (721) is arranged at the sludge inlet end of the sludge collecting branch pipe (72).

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