Anaerobic advanced treatment device for sewage treatment

Abstract

The utility model relates to the technical field of sewage treatment equipment, and provides an anaerobic advanced treatment device for sewage treatment, which comprises a support frame, a separation barrel, a discharge pipe, a stirring mechanism, a stirring shaft, a scraping and washing mechanism and a water outlet pipe, the separation barrel is fixedly connected onto the support frame, the discharge pipe is communicated with the bottom end of the separation barrel, the stirring mechanism is mounted in the separation barrel, and the stirring shaft is connected with the scraping and washing mechanism. The stirring shaft is rotatably connected in the separation cylinder, the scraping and washing mechanism is mounted on the outer wall of the separation cylinder, and one end of each of the plurality of water outlet pipes is communicated with the side wall of the separation cylinder. In the prior art, mud-water separation can be carried out through a centrifugal precipitation method, but in the centrifugal precipitation process, the stirring intensity can influence mud-water separation of anaerobic activated sludge, and when the stirring intensity is too strong, stirring blades can smash sludge particles, so that the sludge particles lose centrifugality, and the mud-water separation is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment equipment, in particular to an anaerobic deep treatment device for sewage treatment. Background Art

[0002] Anaerobic biological treatment technology is a highly efficient sewage treatment method in which the organic matter in sewage is decomposed, metabolized, and digested by anaerobic bacteria under anaerobic conditions, which greatly reduces the organic matter content in sewage and produces biogas. As an important form of biological treatment, anaerobic treatment has been continuously developing a series of new anaerobic treatment processes and structures, gradually overcoming the shortcomings of traditional anaerobic processes and making great progress in theory and practice.

[0003] Anaerobic biological treatment technology utilizes the metabolic characteristics of anaerobic microorganisms. Without the need to provide exogenous energy, it uses the reduced organic matter in the sewage as a hydrogen acceptor and produces methane gas with energy value. The biogas produced while degrading organic matter can be actively utilized to generate economic value.

[0004] The implementation principle of anaerobic biological treatment involves multiple treatment stages. After the raw sewage is coarsely screened and lifted by a sewage lifting pump, it passes through a screen or a screener and enters the grit tank. The sewage after sand and water separation enters the primary sedimentation tank. The effluent from the primary sedimentation tank enters the biological treatment equipment, such as the activated sludge method or the biofilm method. The reactors of the activated sludge method include aeration tanks, oxidation ditches, etc. The biofilm method includes biological filters, biological rotary discs, biological contact oxidation methods and biological fluidized beds. The effluent from the biological treatment equipment enters the secondary sedimentation tank. The effluent from the secondary sedimentation tank is discharged after disinfection or enters tertiary treatment, such as biological denitrification and phosphorus removal, coagulation and sedimentation, sand filtration, activated carbon adsorption, ion exchange and electrodialysis. Part of the sludge in the secondary sedimentation tank is returned to the primary sedimentation tank or biological treatment equipment, and part enters the sludge thickening tank, and then enters the sludge digester. After passing through dehydration and drying equipment, the sludge is finally utilized.

[0005] In the prior art, water that has passed through the primary sedimentation tank needs to enter the biological treatment equipment for secondary treatment. The secondary treatment usually uses the activated sludge method, using reactors such as aeration tanks and oxidation ditches to remove organic matter through the action of microorganisms. Before the effluent from the biological treatment equipment enters the deep treatment step, it is necessary to separate mud and water. In the prior art, mud and water separation can be carried out by centrifugal sedimentation. However, during the centrifugal sedimentation process, the stirring intensity will affect the separation of anaerobic activated sludge and water. When the stirring is too strong, the stirring blades will break up the sludge particles, causing it to lose its centrifugal properties, affecting the mud and water separation. Utility Model Content

[0006] The utility model provides an anaerobic deep treatment device for sewage treatment, which solves the problem in the prior art that when the stirring intensity of the anaerobic deep treatment device is too strong during mud and water separation, the stirring blades will break up the sludge particles, causing the sludge particles to lose centrifugal properties and affecting the mud and water separation.

[0007] The technical solution of the utility model is as follows:

[0008] A sewage treatment anaerobic deep treatment device comprises a support frame, a separation cylinder, a discharge pipe, a stirring mechanism, a stirring shaft and a scraping mechanism;

[0009] The separation cylinder is fixedly connected to the support frame;

[0010] The discharge pipe is connected to the bottom end of the separation cylinder;

[0011] The stirring mechanism is installed in the separation cylinder;

[0012] The stirring shaft is rotatably connected in the separation cylinder;

[0013] The scraping mechanism is installed on the outer wall of the separation cylinder;

[0014] A water outlet pipe, wherein a plurality of the water outlet pipes are provided, and one end of the plurality of water outlet pipes is connected to the side wall of the separation cylinder.

[0015] Furthermore, the stirring mechanism includes a feed pipe, a stirring blade, a limit plate and a vertical stirring assembly;

[0016] The feed pipe is connected to the top of the separation cylinder;

[0017] The stirring blade is fixedly connected to the stirring shaft;

[0018] The limiting plate is rotatably connected to the top end of the stirring shaft;

[0019] The vertical stirring assembly is mounted on the stirring shaft.

[0020] Furthermore, the vertical stirring assembly includes threads, limit grooves, stirring blades and through holes;

[0021] The thread is provided on the stirring shaft;

[0022] There are a plurality of limit grooves, and the plurality of limit grooves are opened on the inner wall of the separation cylinder;

[0023] The stirring blade is threadedly connected to the thread of the stirring shaft, and the stirring blade is slidably connected in the plurality of limiting grooves;

[0024] There are a plurality of through holes, and the plurality of through holes are opened on the stirring blade.

[0025] Furthermore, the scraping and washing mechanism includes a scraping and washing plate, a water flow trough and a cleaning component;

[0026] There are multiple scraping plates, and one scraping plate is fixedly connected between every two stirring leaves;

[0027] The water flow grooves are provided in plurality, and the plurality of water flow grooves are opened on the inner wall of the separation cylinder;

[0028] The cleaning assembly is mounted on the outer wall of the separation cylinder.

[0029] Preferably, the cleaning assembly comprises a water tank, a water pump and an annular water pipe;

[0030] The water tank is fixedly connected to the outer wall of the separation cylinder;

[0031] The water pump is fixedly connected to the water tank, and the input end of the water pump is in communication with the water tank;

[0032] The annular water pipe is fixedly connected to the outer wall of the separation cylinder, the annular water pipe is communicated with the output end of the water pump, and the other ends of the plurality of water outlet pipes are all communicated with the annular water pipe.

[0033] More preferably, a valve is provided on the discharge pipe.

[0034] The working principle and beneficial effects of the utility model are:

[0035] 1. In the utility model, the centrifugal sedimentation method can be used to separate the effluent from the primary sedimentation tank by the stirring mechanism. Compared with the stirring method of the stirring blade in the prior art, the stirring shaft drives a stirring blade located at the bottom of the stirring shaft and a movable stirring blade for stirring. The stirring blade is arranged at the bottom, which will not break up the sludge particles and affect the separation of mud and water. The movable stirring blade can mix the effluent so that the liquid is fully stirred.

[0036] 2. In the utility model, the scraping and washing mechanism can be used to wash the sludge particles adhering to the inner wall of the container while stirring. Compared with the prior art method of simply stirring and then washing the inner wall of the container, the stirring blades can scrape and wash the inner wall of the separation cylinder at the same time during the operation, thereby improving the efficiency of mud-water separation and preventing the sludge particles from adhering to the inner wall of the separation cylinder and being difficult to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0038] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0039] Figure 2 It is a partial cross-sectional structural schematic diagram of the utility model;

[0040] Figure 3 This is a schematic diagram of the structure of the stirring mechanism of the utility model;

[0041] Figure 4 This is a schematic diagram of the structure of the cleaning component of the utility model.

[0042] In the figure: 1. support frame; 2. separation cylinder; 3. discharge pipe; 4. stirring shaft; 5. water outlet pipe; 6. feed pipe; 7. stirring blade; 8. limit plate; 9. thread; 10. limit groove; 11. stirring blade; 12. through hole; 13. scraper plate; 14. water flow trough; 15. water tank; 16. water pump; 17. annular water pipe; 18. valve. DETAILED DESCRIPTION

[0043] The following will be combined with 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 of 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.

[0044] like Figure 1 to Figure 4 As shown, this embodiment proposes an anaerobic deep treatment device for sewage treatment, including a support frame 1, a separation barrel 2, a discharge pipe 3, a stirring mechanism, a stirring shaft 4, a scraping mechanism and a water outlet pipe 5. The separation barrel 2 is fixedly connected to the support frame 1, the discharge pipe 3 is connected to the bottom end of the separation barrel 2, the stirring mechanism is installed in the separation barrel 2, the stirring shaft 4 is rotatably connected in the separation barrel 2, the scraping mechanism is installed on the outer wall of the separation barrel 2, and a plurality of water outlet pipes 5 are provided, and one end of the plurality of water outlet pipes 5 is connected to the side wall of the separation barrel 2. The stirring mechanism stirs at the bottom end of the separation barrel 2 during stirring to prevent the stirring blades 7 from breaking up the sludge particles. At the same time, the stirring mechanism can continuously stir the liquid to achieve a better effect of centrifugal sedimentation. At the same time, the scraping mechanism scrapes the inner wall of the separation barrel 2 to prevent a large amount of sludge particles from accumulating on the inner wall of the separation barrel 2 and making it difficult to clean.

[0045] Among them, the stirring mechanism includes a feed pipe 6, a stirring blade 7, a limit plate 8 and a vertical stirring assembly. The feed pipe 6 is connected to the top of the separation cylinder 2, the stirring blade 7 is fixedly connected to the stirring shaft 4, the limit plate 8 is rotatably connected to the top of the stirring shaft 4, and the vertical stirring assembly is installed on the stirring shaft 4. The vertical stirring assembly can stir the liquid so that the stirring blade 7 can stir more fully.

[0046] Secondly, the vertical stirring assembly includes a thread 9, a limit groove 10, a stirring blade 11 and a through hole 12. The thread 9 is opened on the stirring shaft 4. There are multiple limit grooves 10, and multiple limit grooves 10 are opened on the inner wall of the separation cylinder 2. The stirring blade 11 is connected to the thread 9 of the stirring shaft 4 by the thread 9. The stirring blade 11 is slidably connected in the multiple limit grooves 10. There are multiple through holes 12, and multiple through holes 12 are opened on the stirring blade 11. A motor is provided at the bottom end of the separation cylinder 2. The motor drives the stirring shaft 4 to rotate, so that the stirring blade 7 rotates to stir. At the same time, the stirring blade 11 moves in the vertical direction to stir the liquid, so that the stirring effect is better.

[0047] Again, the scraping mechanism includes a scraping plate 13, a water flow trough 14 and a cleaning component. There are multiple scraping plates 13, and a scraping plate 13 is fixedly connected between every two stirring blades 11. There are multiple water flow troughs 14, and multiple water flow troughs 14 are opened on the inner wall of the separation cylinder 2. The cleaning component is installed on the outer wall of the separation cylinder 2. When the stirring blade 11 moves in the vertical direction, the scraping plate 13 scrapes the inner wall of the separation cylinder 2 along with the stirring blade 11, and cooperates with the water supply of the cleaning component to clean the inner wall of the separation cylinder 2. The cleaning effect is good and the sludge particles will not adhere to the inner wall of the separation cylinder 2.

[0048] Among them, the cleaning component includes a water tank 15, a water pump 16 and an annular water pipe 17. The water tank 15 is fixedly connected to the outer wall of the separation cylinder 2, the water pump 16 is fixedly connected to the water tank 15, the input end of the water pump 16 is connected to the water tank 15, the annular water pipe 17 is fixedly connected to the outer wall of the separation cylinder 2, the annular water pipe 17 is connected to the output end of the water pump 16, and the other ends of multiple water outlet pipes 5 are all connected to the annular water pipe 17. The cleaning component pumps the water from the water tank 15 into the annular water pipe 17 through the water pump 16, and then the annular water pipe 17 flows to the water flow trough 14, flows into the separation cylinder 2 along the inner wall of the separation cylinder 2, and cleans the inner wall of the separation cylinder 2.

[0049] Finally, a valve 18 is provided on the discharge pipe 3 to control the discharge process at any time.

[0050] In this embodiment, muddy water enters the separation cylinder 2 from the feed port, the motor is started to drive the stirring shaft 4 to rotate, thereby driving the stirring blade 7 to rotate, and at the same time, the stirring blade 11 moves vertically on the thread 9 of the rotating shaft to stir the liquid. When it moves to the height of the limit plate 8, the motor is reversed to make the stirring blade 11 reciprocate in the vertical direction to stir the sewage. While the stirring blade 11 is stirring, the water pump 16 is started to pump the water from the water tank 15 into the annular water pipe 17, and then enters the outlet pipe 5 from the annular water pipe 17, and flows out from the water flow trough 14 along the inner wall of the separation cylinder 2. The scraper plate 13 follows the stirring blade 11 to make a vertical reciprocating motion, and scrapes the inner wall of the separation cylinder 2 together with the water flowing out of the water flow trough 14.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sewage treatment anaerobic deep treatment device, comprising a support frame (1), characterized in that: Also includes: A separation cylinder (2), wherein the separation cylinder (2) is fixedly connected to the support frame (1); A discharge pipe (3), the discharge pipe (3) being connected to the bottom end of the separation cylinder (2); A stirring mechanism, the stirring mechanism being installed in the separation cylinder (2); a stirring shaft (4), the stirring shaft (4) being rotatably connected in the separation cylinder (2); A scraping mechanism, the scraping mechanism being mounted on the outer wall of the separation cylinder (2); A water outlet pipe (5), wherein a plurality of the water outlet pipes (5) are provided, and one end of the plurality of water outlet pipes (5) is connected to the side wall of the separation cylinder (2).

2. The anaerobic deep treatment device for sewage treatment according to claim 1, characterized in that: The stirring mechanism comprises: A feed pipe (6), the feed pipe (6) being connected to the top end of the separation cylinder (2); A stirring blade (7), wherein the stirring blade (7) is fixedly connected to the stirring shaft (4); A limiting plate (8), the limiting plate (8) being rotatably connected to the top end of the stirring shaft (4); A vertical stirring assembly is mounted on the stirring shaft (4).

3. The anaerobic deep treatment device for sewage treatment according to claim 2 is characterized in that: The vertical stirring assembly comprises: A thread (9), wherein the thread (9) is provided on the stirring shaft (4); A limiting groove (10), wherein a plurality of the limiting grooves (10) are provided, and the plurality of limiting grooves (10) are opened on the inner wall of the separation cylinder (2); A stirring blade (11), wherein the stirring blade (11) is connected to the thread (9) of the stirring shaft (4) by a thread (9), and the stirring blade (11) is slidably connected in the plurality of limiting grooves (10); A through hole (12), wherein a plurality of the through holes (12) are provided, and the plurality of the through holes (12) are opened on the stirring blade (11).

4. The anaerobic deep treatment device for sewage treatment according to claim 3 is characterized in that: The scraping and washing mechanism comprises: A scraping plate (13), wherein a plurality of the scraping plates (13) are provided, and a scraping plate (13) is fixedly connected between every two stirring blades (11); a water flow trough (14), wherein a plurality of the water flow troughs (14) are provided, and the plurality of the water flow troughs (14) are arranged on the inner wall of the separation cylinder (2); A cleaning component is installed on the outer wall of the separation cylinder (2).

5. The anaerobic deep treatment device for sewage treatment according to claim 4 is characterized in that: The cleaning assembly comprises: A water tank (15), wherein the water tank (15) is fixedly connected to the outer wall of the separation cylinder (2); A water pump (16), wherein the water pump (16) is fixedly connected to the water tank (15), and an input end of the water pump (16) is in communication with the water tank (15); An annular water pipe (17), the annular water pipe (17) is fixedly connected to the outer wall of the separation cylinder (2), the annular water pipe (17) is connected to the output end of the water pump (16), and the other ends of the plurality of water outlet pipes (5) are all connected to the annular water pipe (17).

6. The anaerobic deep treatment device for sewage treatment according to claim 5, characterized in that: The discharge pipe (3) is provided with a valve (18).

Images