A sewage treatment process regulating device and regulating method

Abstract

The present invention provides a sewage treatment process regulating device and regulating method, the sewage treatment process regulating device comprises a diverter, the diverter is arranged in front of a submersible mixer; the diverter comprises a fixed plate, an upper diverter plate and a lower diverter plate, the fixed plate is arranged horizontally and is located on the horizontal plane where the axis of the submersible mixer is located; one end of the upper diverter plate is connected to an end of the fixed plate close to the submersible mixer, the upper diverter plate is arranged obliquely above the fixed plate, and the inclination direction is upward and away from the submersible mixer; one end of the lower diverter plate is connected to an end of the fixed plate close to the submersible mixer, the lower diverter plate is arranged obliquely below the fixed plate, and the inclination direction is downward and away from the submersible mixer. A sewage treatment process regulating device and regulating method provided by the present invention adjust the mixing effect in the depth direction of the pool, increase the fluid flow rate in the middle and upper part of the pool, and ensure that the activated sludge is in a suspended state.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a sewage treatment process regulating device and a regulating method. Background Art

[0002] The activated sludge process is a treatment process that uses activated sludge in a biochemical pool to remove organic matter from sewage. Since the activated sludge is inhabited by microbial communities with strong vitality and the ability to degrade organic matter in water, the sewage can be purified. There are many factors that affect the efficient operation of the activated sludge process in the biochemical pool, among which the average flow rate of sewage is one of its important indicators. A submersible mixer is set horizontally in the biochemical pool to push the sewage in the pool forward. In order to ensure that the activated sludge is in a suspended state without sludge precipitation, the national standard "Outdoor Drainage Design Standard" numbered GB50014 stipulates that the average flow rate of sewage should not be less than 0.25m / s.

[0003] However, the existing process has the following defects: 1. The flow field range of a single mixer is truncated cone-shaped, with the small end located at the outlet of the mixer. Its diameter is the rotation diameter of the mixer impeller, and the axis is the extension line of the mixer. During the flow of the fluid, the surrounding water body is driven to mix with it. If the reflection effect of the pool wall and the pool bottom is not considered, there is no mutual mixing between the fluids themselves, making the overall mixing effect unsatisfactory. 2. The flow velocity distribution in the height direction is approximately linear. Because the mixer is installed in the lower area of ​​the pool body, the flow velocity of the fluid in the axial direction of the mixer is the largest. As it gradually moves upward from the axis of the mixer to the water surface, its flow velocity gradually decreases, that is, the mixing at the bottom is relatively sufficient, while for the water surface, its flow velocity is relatively small, and the sludge concentration is relatively low, which cannot fully ensure that the activated sludge is in a suspended state, affecting the balance of the process. 3. The installation height of conventional submersible mixers is uniform, and it is difficult to adjust the velocity gradient in the height direction. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a sewage treatment process regulating device and regulating method, strengthen the mixing effect in the depth direction of the pool, adjust the fluid flow rate in the middle and upper part of the pool, and ensure that the activated sludge is in a suspended state.

[0005] To solve the above technical problems, in the first aspect, an embodiment of the present invention provides a sewage treatment process regulating device, including a diverter, which is arranged directly in front of a submersible mixer; the diverter includes a fixed plate, an upper diverter plate and a lower diverter plate, and the fixed plate is horizontally arranged and located on the horizontal plane where the axis of the submersible mixer is located; one end of the upper diverter plate is connected to an end of the fixed plate close to the submersible mixer, and the upper diverter plate is tilted above the fixed plate, and the tilt direction is upward and away from the submersible mixer; one end of the lower diverter plate is connected to an end of the fixed plate close to the submersible mixer, and the lower diverter plate is tilted below the fixed plate, and the tilt direction is downward and away from the submersible mixer.

[0006] As a further improvement of an embodiment of the present invention, the maximum distance in the vertical direction between one end of the upper diverter plate away from the submersible mixer and the fixed plate is 1 / 3 to 2 / 3 of the impeller radius of the submersible mixer; the angle between the upper diverter plate and the fixed plate is 0 to 20°.

[0007] As a further improvement of an embodiment of the present invention, the maximum distance in the vertical direction between one end of the lower diverter plate away from the submersible mixer and the fixed plate is 1 / 4 to 1 / 3 of the impeller radius of the submersible mixer; the angle between the lower diverter plate and the fixed plate is 0 to 15°.

[0008] As a further improvement of an embodiment of the present invention, one end of the upper diverter plate is hinged to an end of the fixed plate close to the submersible mixer, and the other end of the upper diverter plate is connected to the fixed plate through an upper angle adjustment component, and the upper angle adjustment component is used to adjust the angle between the upper diverter plate and the fixed plate.

[0009] As a further improvement of an embodiment of the present invention, one end of the lower diverter plate is hinged to an end of the fixed plate close to the submersible mixer, and the other end of the lower diverter plate is connected to the fixed plate through a lower angle adjustment component, and the lower angle adjustment component is used to adjust the angle between the lower diverter plate and the fixed plate.

[0010] As a further improvement of the embodiment of the present invention, a first reflux hole is provided on the upper diverter plate, and a second reflux hole is provided on the lower diverter plate.

[0011] As a further improvement of the embodiment of the present invention, the ends of the upper splitter plate, the fixed plate and the lower splitter plate close to the submersible mixer are all flush and 300 to 800 mm away from the front end of the submersible mixer.

[0012] In a second aspect, an embodiment of the present invention provides a sewage treatment process adjustment method, which uses the sewage treatment process adjustment device provided in the first aspect; the sewage treatment process adjustment method includes:

[0013] Step 10, installing a submersible mixer and a flow divider, and operating the submersible mixer to generate a fluid flowing forward along its axial direction;

[0014] Step 20, in the fluid below the horizontal plane where the axis of the submersible mixer is located, a part of the fluid is incident on the lower diverter plate, and the other part of the fluid continues to flow forward below the lower diverter plate; in the fluid incident on the lower diverter plate, the fluid close to the axis is first incident on the lower diverter plate, and is reflected by the lower diverter plate to generate a reflected fluid, and the reflected fluid interacts with the fluid below that has not yet been incident on the lower diverter plate, and the mixed fluid is incident forward and downward on the lower diverter plate, and is reflected by the lower diverter plate to generate a reflected fluid, and the reflected fluid interacts with the fluid below that has not yet been incident on the lower diverter plate again and is incident on the lower diverter plate; the fluid incident on the lower diverter plate is reflected by the lower diverter plate to form a downward and forward fluid, and interacts with the fluid flowing forward below the lower diverter plate, and the mixed fluid flows forward and downward, and then flows upward and forward after being reflected by the pool bottom, thereby enhancing the sewage flow speed and mixing effect at the pool bottom and enhancing the buoyancy of the sludge;

[0015] Step 30, in the fluid located above the horizontal plane where the axis of the submersible mixer is located, a part of the fluid is incident on the upper diverter plate, and the other part of the fluid continues to flow forward above the upper diverter plate; in the fluid incident on the upper diverter plate, the fluid close to the axis is first incident on the upper diverter plate, and is reflected by the upper diverter plate to generate a reflected fluid, and the reflected fluid interacts with the fluid above that has not yet been incident on the upper diverter plate, and the mixed fluid is incident forward and upward on the upper diverter plate, and is reflected by the upper diverter plate to generate a reflected fluid, which again interacts with the fluid above that has not yet been incident on the upper diverter plate; the fluid incident on the upper diverter plate is reflected by the upper diverter plate to form an upward and forward fluid, which interacts with the fluid flowing upward and forward on the upper diverter plate, and the mixed fluid flows forward and upward, thereby enhancing the flow speed, range and mixing effect of the fluid in the middle and upper parts of the pool, so that the sludge is suspended in the water body in the middle and upper parts.

[0016] As a further improvement of the embodiment of the present invention, in step 20, when the fluid is incident on the lower diverter plate, most of the fluid is reflected by the lower diverter plate and flows downward and forward, and a small part of the fluid flows forward through the second reflux hole on the lower diverter plate, impacts the sewage at the front end of the diverter and mixes and dilutes with it to form a lower mixed liquid; in step 30, when the fluid is incident on the upper diverter plate, most of the fluid is reflected by the upper diverter plate and flows upward and forward, and a small part of the fluid flows forward through the first reflux hole on the upper diverter plate, impacts the sewage at the front end of the diverter and mixes and dilutes with it to form an upper mixed liquid; the upper mixed liquid and the lower mixed liquid are mixed again to reduce the density of the sewage and create conditions for the sludge to float.

[0017] As a further improvement of the embodiment of the present invention, the present invention further includes:

[0018] Step 40, real-time monitoring of the fluid flow rate below the liquid surface and the fluid flow rate in front of the diverter, adjusting the angle between the upper diverter plate and the fixed plate of the diverter according to the fluid flow rate below the liquid surface; adjusting the angle between the lower diverter plate and the fixed plate of the diverter according to the fluid flow rate in front of the diverter, so as to maintain a certain velocity gradient in the depth direction of the pool;

[0019] Specifically include:

[0020] Step 401, real-time monitoring of the fluid flow rate below the liquid surface and the fluid flow rate in front of the diverter. According to the monitoring data, if the fluid flow rate below the liquid surface or the fluid flow rate in front of the diverter is not within a preset range, the submersible mixer stops running;

[0021] Step 402, if the fluid flow rate below the liquid surface is less than the minimum value of the preset range, the angle between the upper splitter plate and the fixed plate is increased; if the fluid flow rate below the liquid surface is greater than the maximum value of the preset range, the angle between the upper splitter plate and the fixed plate is decreased; if the fluid flow rate directly in front of the splitter is less than the minimum value of the preset range, the angle between the lower splitter plate and the fixed plate is increased; if the fluid flow rate directly in front of the splitter is greater than the maximum value of the preset range, the angle between the lower splitter plate and the fixed plate is decreased;

[0022] Step 403, the submersible mixer starts working and executes step 401.

[0023] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0024] (1) The sewage treatment process regulating device and regulating method provided by the present invention are as follows: a flow divider is arranged in front of a submersible mixer, and the operation of the submersible mixer generates a fluid flowing forward along its axial direction; the fluid located below the horizontal plane where the axis is located is incident on the lower flow divider plate of the flow divider, and will flow downward and forward under the reflection of the lower flow divider plate, and then flow upward and forward after being reflected by the bottom of the pool, thereby enhancing the sewage flow speed and mixing effect at the bottom of the pool, enhancing the buoyancy of the sludge, and promoting the sludge to float; the fluid located above the horizontal plane where the axis is located is incident on the upper flow divider plate of the flow divider, and will flow upward and forward under the reflection of the upper flow divider plate, thereby enhancing the flow speed, flow range and mixing effect in the middle and upper parts of the pool, so that the sludge is suspended in the water body in the middle and upper parts, and the biochemical process can be operated efficiently.

[0025] (2) The sewage treatment process regulating device and regulating method provided by the present invention are characterized in that the maximum height of the orthographic projection of the lower diverter plate of the diverter on the vertical plane is 1 / 4 to 1 / 3 of the impeller radius of the submersible mixer, and the angle between the lower diverter plate and the fixed plate is 0 to 15°, so that in the fluid below the horizontal plane where the axis of the submersible mixer is located, a part of the fluid is incident on the lower diverter plate, and the other part of the fluid continues to flow forward under the lower diverter plate; the fluid incident on the lower diverter plate is reflected by the lower diverter plate to form a downward and forward fluid, which interacts with the fluid flowing forward under the lower diverter plate, and the mixed fluid flows forward and downward, and then flows upward and forward after being reflected by the pool bottom, thereby further enhancing the sewage flow speed and mixing effect at the pool bottom and enhancing the buoyancy of the sludge. The maximum height of the orthographic projection of the upper diverter plate of the diverter on the vertical plane is 1 / 3 to 2 / 3 of the impeller radius of the submersible mixer, and the angle between the upper diverter plate and the fixed plate is 0 to 20 degrees. Therefore, in the fluid located above the horizontal plane where the axis of the submersible mixer is located, a part of the fluid is incident on the upper diverter plate, and the other part of the fluid continues to flow forward above the upper diverter plate. The fluid incident on the upper diverter plate is reflected by the upper diverter plate to form an upward and forward fluid, which interacts with the upward and forward flowing fluid on the upper diverter plate. The mixed fluid flows forward and upward, thereby further enhancing the flow velocity, flow range and mixing effect of the fluid in the middle and upper parts of the tank, so that the sludge is suspended in the water body in the middle and upper parts.

[0026] (3) The sewage treatment process regulating device and regulating method provided by the present invention are characterized in that a second reflow hole is provided on the lower diverter plate. When the fluid is incident on the lower diverter plate, most of the fluid is reflected by the lower diverter plate and flows downward and forward, and a small part of the fluid flows forward through the second reflow hole on the lower diverter plate, impacts the sewage at the front end of the diverter and mixes and dilutes with it to form a lower mixed liquid; a first reflow hole is provided on the upper diverter plate. When the fluid is incident on the upper diverter plate, most of the fluid is reflected by the upper diverter plate and flows upward and forward, and a small part of the fluid flows forward through the first reflow hole on the upper diverter plate, impacts the sewage at the front end of the diverter and mixes and dilutes with it to form an upper mixed liquid; the upper mixed liquid and the lower mixed liquid are mixed again to reduce the density of the sewage and create conditions for the sludge to float.

[0027] (4) The sewage treatment process regulating device and regulating method provided by the present invention are characterized in that the angle between the upper diverter plate and the fixed plate of the diverter (i.e., the inclination angle of the upper diverter plate) and the angle between the lower diverter plate and the fixed plate (i.e., the inclination angle of the lower diverter plate) are both adjustable. According to the velocity flow field at various points at different heights in front of the submersible mixer, the inclination angles of the upper diverter plate and the lower diverter plate of the diverter are adjusted to change the stirring and sludge suspension effects of the submersible mixer in the depth direction. The flow field is repeatedly adjusted and controlled in this way, so that the entire biochemical pool maintains a certain velocity gradient in the depth direction. The flow field is adjusted so that sludge precipitation does not occur at the bottom of the pool, and the sludge concentration does not become uneven below the liquid surface, thereby ensuring that the activated sludge at different depths is always in a suspended state and ensuring the balanced operation of the biochemical pool process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0029] Figure 1 It is a structural schematic diagram of a sewage treatment process regulating device according to an embodiment of the present invention;

[0030] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle splitter;

[0031] Figure 3 yes Figure 2 Fluid regulation effect diagram of the middle and upper manifold;

[0032] Figure 4 yes Figure 2 Fluid regulation effect diagram of the middle and lower manifolds.

[0033] The figure includes: diverter 1, fixed plate 11, upper diverter plate 12, lower diverter plate 13, hinge 14, first fastener 15, second fastener 16, submersible mixer 2, guide rod 3, control device 4, first speed sensor 5, second speed sensor 6, first upper incident fluid S1, first upper reflection fluid S1', second upper incident fluid S2, second upper reflection fluid S2', nth upper incident fluid Sn, n+1th upper incident fluid Sn+1, first lower incident fluid X1, first lower reflection fluid X1', second lower incident fluid X2, second lower reflection fluid X2', mth lower incident fluid Xm, m+1th lower incident fluid Xm+1. DETAILED DESCRIPTION

[0034] The technical solution of the present invention is described in detail below with reference to the accompanying drawings.

[0035] The embodiment of the present invention provides a sewage treatment process regulating device, such as Figure 1 As shown, it includes a submersible mixer 2 and a diverter 1. A guide rod 3 is arranged in the biochemical pool, the submersible mixer 2 is assembled on the guide rod 3, and the diverter 1 is arranged right in front of the submersible mixer 2. The height of the axis of the submersible mixer from the bottom of the pool is 1.5 to 2 times the diameter of the impeller.

[0036] like Figure 2 As shown, the diverter 1 includes a fixed plate 11, an upper diverter plate 12 and a lower diverter plate 13. The fixed plate 11 is connected to the submersible mixer. The fixed plate 11 is horizontally arranged and located on the horizontal plane where the axis of the submersible mixer 2 is located. One end of the upper diverter plate 12 is connected to the end of the fixed plate close to the submersible mixer. The upper diverter plate 12 is tilted above the fixed plate 11, and the tilt direction is upward and away from the submersible mixer. One end of the lower diverter plate 13 is connected to the end of the fixed plate close to the submersible mixer. The lower diverter plate 13 is tilted below the fixed plate 11, and the tilt direction is downward and away from the submersible mixer. The ends of the upper diverter plate, the fixed plate and the lower diverter plate close to the submersible mixer are all flush and 300 to 800 mm away from the front end of the submersible mixer. The widths of the upper diverter plate and the lower diverter plate are both greater than the impeller diameter of the submersible mixer.

[0037] When the sewage treatment process regulating device of the above embodiment is working, the submersible mixer generates fluid flowing forward along its axial direction, below the horizontal plane where the axis is located, such as Figure 4 As shown, the first lower incident fluid X1 closest to the horizontal plane where the axis is located horizontally acts on the lower diverter plate 13, and is reflected by the lower diverter plate 13 to form a first lower reflected fluid X1'. The first lower reflected fluid X1' interacts with the second lower incident fluid X2 below the first lower incident fluid X1 that has not yet been incident on the lower diverter plate 13 to enhance the mixing effect. After the two fluids mix with each other, they are incident on the lower diverter plate again, and are reflected by the lower diverter plate to form a second lower reflected fluid X2', which then interacts with the incident fluid below the second lower incident fluid X2, and is mixed and reflected in turn to continuously enhance the mixing effect, and finally the fluid flows downward and forward. Above the horizontal plane where the axis is located, as shown in FIG. Figure 3 As shown, the first upper incident fluid S1 closest to the horizontal plane where the axis is located acts horizontally on the upper diverter plate 12, and is reflected by the upper diverter plate 12 to form a first upper reflected fluid S1'. The first upper reflected fluid S1' interacts with the second upper incident fluid S2 above the first upper incident fluid S1 that has not yet been incident on the upper diverter plate 12 to enhance the mixing effect. After the two fluids mix with each other, they are incident on the upper diverter plate again, and are reflected by the upper diverter plate to form a second upper reflected fluid S2', which then interacts with the incident fluid above the second upper incident fluid S2, and is mixed and reflected in sequence to continuously enhance the mixing effect, and finally the fluid flows upward and forward.

[0038] Preferably, the upper surface of the upper splitter plate is a concave arc surface. The first upper incident fluid S1 is reflected by the upper splitter plate to form a first upper reflected fluid S1', and the first upper reflected fluid S1' interacts and mixes with the second upper incident fluid S2 to form a second reflected fluid S2' through reflection by the upper splitter plate. The two reflected fluids cross and are not parallel, and the two reflected fluids interact again, so that the reflected fluids interact and mix from bottom to top, further enhancing the mixing effect above the horizontal plane where the axis of the submersible mixer is located.

[0039] Preferably, the lower surface of the lower diverter plate is an arc surface concave upward. The first lower incident fluid X1 is reflected by the lower diverter plate to form a first lower reflected fluid X1', and the first lower reflected fluid X1' and the second lower incident fluid X2 are mixed and reflected by the lower diverter plate to form a second lower reflected fluid X2'. The two reflected fluids cross and are not parallel, and the two reflected fluids interact with each other again, so that the reflected fluids from top to bottom interact and mix, further enhancing the mixing effect below the horizontal plane where the axis of the submersible mixer is located.

[0040] The sewage treatment process regulating device of the above embodiment is provided with a diverter directly in front of the submersible mixer. The fluid located below the horizontal plane where the axis is located is incident on the lower diverter plate 13 of the diverter, flows downward and forward under the reflection of the lower diverter plate, and then flows upward and forward after being reflected by the bottom of the pool, thereby enhancing the sewage flow speed and mixing effect at the bottom of the pool, enhancing the buoyancy of the sludge, and promoting the sludge to float. The fluid located above the horizontal plane where the axis is located is incident on the upper diverter plate 12 of the diverter, and flows upward and forward under the reflection of the upper diverter plate, thereby enhancing the flow speed, flow range and mixing effect in the middle and upper parts of the pool, so that the sludge is suspended in the water body in the middle and upper parts, ensuring the efficient operation of the biochemical process.

[0041] Preferably, the maximum vertical distance between one end of the upper diverter plate 12 away from the submersible mixer and the fixed plate 11 is 1 / 3 to 2 / 3 of the impeller radius of the submersible mixer, and the angle between the upper diverter plate 12 and the fixed plate 11 is 0 to 20°.

[0042] In this embodiment, in the fluid located above the horizontal plane where the axis of the submersible mixer is located, Figure 3 As shown, a part of the fluid is incident on the upper diverter plate, and the other part of the fluid continues to flow forward above the upper diverter plate. The fluid incident on the upper diverter plate is reflected by the upper diverter plate to form an upward and forward fluid, which interacts with the fluid flowing upward and forward on the upper diverter plate. The mixed fluid flows forward and upward, thereby further enhancing the flow velocity, flow range and mixing effect of the fluid in the middle and upper parts of the pool, so that the sludge is suspended in the water in the middle and upper parts.

[0043] Preferably, the maximum vertical distance between one end of the lower diverter plate 13 away from the submersible mixer and the fixed plate 11 is 1 / 4 to 1 / 3 of the impeller radius of the submersible mixer, and the angle between the lower diverter plate 13 and the fixed plate 11 is 0 to 15°.

[0044] In this embodiment, in the fluid below the horizontal plane where the axis of the submersible mixer is located, Figure 4 As shown, part of the fluid is incident on the lower diverter plate, and the other part of the fluid continues to flow forward under the lower diverter plate; the fluid incident on the lower diverter plate is reflected by the lower diverter plate to form a downward and forward fluid, which interacts with the fluid flowing forward under the lower diverter plate. The mixed fluid flows forward and downward, and then flows upward and forward after being reflected by the bottom of the pool, thereby further enhancing the sewage flow speed and mixing effect at the bottom of the pool and enhancing the buoyancy of the sludge.

[0045] Preferably, a first reflux hole is provided on the upper diverter plate, and a second reflux hole is provided on the lower diverter plate. When the fluid is incident on the lower diverter plate, most of the fluid flows downward and forward after being reflected by the lower diverter plate, and a small part of the fluid flows forward through the second reflux hole on the lower diverter plate, impacting the sewage at the front end of the diverter and mixing and diluting with it to form a lower mixed liquid. When the fluid is incident on the upper diverter plate, most of the fluid flows upward and forward after being reflected by the upper diverter plate, and a small part of the fluid flows forward through the first reflux hole on the upper diverter plate, impacting the sewage at the front end of the diverter and mixing and diluting with it to form an upper mixed liquid. The upper mixed liquid and the lower mixed liquid are mixed again to reduce the density of the sewage and create conditions for the sludge to float.

[0046] Preferably, one end of the upper diverter plate 12 is hinged to the end of the fixed plate 11 close to the submersible mixer 2 through a hinge 14, and the other end of the upper diverter plate 12 is connected to the fixed plate through an upper angle adjustment assembly, and the upper angle adjustment assembly is used to adjust the angle between the upper diverter plate 12 and the fixed plate 11. Specifically, the upper angle adjustment assembly includes an upper arc adjustment plate, and a plurality of upper adjustment holes are arranged along the arc interval on the upper arc adjustment plate, and the rotation center of the plurality of upper adjustment holes arranged along the arc interval is located on the axis of the hinge, and a first fixing hole adapted to the upper adjustment hole is provided on the fixed plate. The upper diverter plate rotates around the hinge, and the corresponding upper adjustment hole is matched with the first fixing hole by using the first fastener 15, so as to fix the upper diverter plate. The upper diverter plate is rotated to adjust the angle between it and the fixed plate, so that the fluid acting on the upper diverter plate produces different reflection angles, and produces mixing effects of different ranges and intensities in the upper part of the pool.

[0047] The larger the angle between the upper splitter plate and the fixed plate, the larger the angle between the reflected fluid and the horizontal plane. The reflected fluid strengthens the flow velocity of the fluid above the horizontal plane where the axis of the submersible mixer is located, increases the upward flow range, and at the same time strengthens the upward flow effect of the sludge mixed liquid below the horizontal plane where the axis is located, so that the sludge is suspended below the water surface. If it is necessary to strengthen the mixing effect above the horizontal plane where the axis is located, increase the inclination angle of the upper splitter plate. If it is necessary to weaken the mixing effect above the horizontal plane where the axis is located, reduce the inclination angle of the upper splitter plate.

[0048] Preferably, one end of the lower diverter plate 13 is hinged to the end of the fixed plate 11 close to the submersible mixer 2 through a hinge 14, and the other end of the lower diverter plate 13 is connected to the fixed plate 11 through a lower angle adjustment assembly, and the lower angle adjustment assembly is used to adjust the angle between the lower diverter plate 13 and the fixed plate 11. Specifically, the lower angle adjustment assembly includes a lower arc adjustment plate, and a plurality of lower adjustment holes are arranged along the arc interval on the lower arc adjustment plate, and the rotation center of the plurality of lower adjustment holes arranged along the arc interval is located on the axis of the hinge, and a second fixing hole adapted to the lower adjustment hole is arranged on the fixed plate. The lower diverter plate rotates around the hinge, and the corresponding lower adjustment hole is matched with the second fixing hole by using the second fastener 16, so as to fix the lower diverter plate. The lower diverter plate is rotated to adjust the angle between it and the fixed plate, so that the fluid acting on the lower diverter plate produces different reflection angles, and produces mixing effects of different ranges and intensities at the bottom of the pool.

[0049] The larger the angle between the lower diverter plate and the fixed plate, the larger the angle between the reflected fluid and the horizontal plane. The reflected fluid strengthens the flow velocity of the fluid below the horizontal plane where the axis of the submersible mixer is located, strengthens the effect of the fluid tilting and impacting the sludge at the bottom of the pool, and forms a high-concentration sewage mixture. The sewage mixture moves forward and upward after being reflected by the bottom of the pool, strengthening the mixing effect at the bottom of the pool, and making the sewage with a high sludge content flow upward and forward, so that the sludge will not settle at the bottom of the pool, and at the same time increase the sludge content of the water body above the horizontal plane where the axis is located, so that the sludge is better suspended in the water. If you need to strengthen the mixing effect below the horizontal plane where the axis is located, increase the inclination angle of the lower diverter plate. If you need to weaken the mixing effect below the horizontal plane where the axis is located, reduce the inclination angle of the lower diverter plate.

[0050] Preferably, a first speed sensor 5 and a second speed sensor 6 are provided in the biochemical pool, and the first speed sensor 5 and the second speed sensor 6 are installed on the same vertical plane on the side of the diverter away from the submersible mixer. The first speed sensor 5 is installed below the liquid level, preferably 200 to 800 mm away from the liquid level. The second speed sensor 6 is installed 200 to 500 mm above and below the horizontal plane where the axis of the submersible mixer 2 is located. The first speed sensor 5 and the second speed sensor 6 are both connected to the control device 4, and the first speed sensor 5 and the second speed sensor 6 transmit speed signals to the control device 4, so that the inclination angles of the upper and lower diverter plates of the diverter can be adjusted according to the speed of each point, the sewage flow rate of the biochemical pool is changed, and the flow state of the biochemical pool is improved.

[0051] Preferably, there are n submersible mixers 2, where n is an integer greater than or equal to 1. There are n first speed sensors and n second speed sensors.

[0052] The working process of the sewage treatment process regulating device in the above embodiment is as follows:

[0053] The submersible mixer and the flow divider are installed, and the submersible mixer is operated to generate fluid flowing forward along its axial direction.

[0054] When a part of the incident fluid flows in parallel to the upper diverter plate, the first upper incident fluid S1 closest to the horizontal plane where the axis is located acts horizontally on the upper diverter plate, and is reflected by the upper diverter plate 12 to form a first upper reflected fluid S1'. The first upper reflected fluid S1' interacts with the second upper incident fluid S2 above the first upper incident fluid S1 that has not yet been incident on the upper diverter plate 12 to enhance the mixing effect. After the two fluids mix with each other, they are incident on the upper diverter plate again, and are reflected by the upper diverter plate to form a second upper reflected fluid S2', which then interacts with the incident fluid above the second upper incident fluid S2, and is mixed and reflected in turn to continuously enhance the mixing effect. When the incident fluid acts on the upper diverter plate, most of the fluid flows upward and forward after being reflected by the upper diverter plate, and a small part of the fluid flows forward through the first reflux hole on the upper diverter plate, impacting the sewage at the front end of the diverter and mixing and diluting with it to form an upper mixed liquid. All the incident fluids and reflected fluids acting on the upper diverter plate interact and mix, then move forward and upward, mix and interact with another part of the incident fluid that flows forward parallel to the other part of the diverter plate, further mix the sewage, and then flow obliquely upward and forward, thereby enhancing the flow speed, range and mixing effect of the fluid in the middle and upper parts, so that the sludge is suspended in the water in the middle and upper parts, and the biochemical process can run efficiently.

[0055] When a part of the incident fluid flows in parallel to the lower diverter plate, the first lower incident fluid X1 closest to the horizontal plane where the axis is located acts horizontally on the lower diverter plate 13, and is reflected by the lower diverter plate 13 to form a first lower reflected fluid X1'. The first lower reflected fluid X1' interacts with the second lower incident fluid X2 below the first lower incident fluid X1 that has not yet been incident on the lower diverter plate 13 to enhance the mixing effect. After the two fluids mix with each other, they are incident on the lower diverter plate again, and are reflected by the lower diverter plate to form a second lower reflected fluid X2', which then interacts with the incident fluid below the second lower incident fluid X2, and is mixed and reflected in turn to continuously enhance the mixing effect. When the incident fluid acts on the lower diverter plate, most of the fluid flows downward and forward after being reflected by the lower diverter plate, and a small part of the fluid flows forward through the second reflux hole on the lower diverter plate, impacting the sewage at the front end of the diverter and mixing and diluting with it to form a lower mixed liquid. The upper mixed liquid and the lower mixed liquid are mixed again to reduce the density of the sewage and create conditions for the sludge to float. All the incident fluids and reflected fluids acting on the lower diverter plate interact and mix, then move forward and downward, and mix and interact with another part of the incident fluids that flow forward and parallel to the lower diverter plate, further mix and dilute the sewage with high sludge content at the bottom of the pool, flow obliquely downward and forward, and then flow upward and forward after being reflected at the bottom of the pool, thereby increasing the sewage flow speed and mixing effect at the bottom of the pool and increasing the buoyancy of the sludge.

[0056] When the submersible mixer 2 runs stably, the flow field of the biochemical pool will also be stable. The first speed sensor 5 monitors the fluid flow rate below the liquid surface in real time, and the second speed sensor 6 monitors the fluid flow rate just in front of the diverter in real time. The measured data are transmitted to the control device 4. According to the data measured by the first speed sensor 5 and the second speed sensor 6 at each position and height direction, or according to the sludge concentration sensor at each point, the suspended state (concentration) of the activated sludge is judged, and the water treatment process of the biochemical pool is adjusted. Specifically:

[0057] If the first speed sensor 5 detects a low flow rate, lift the submersible mixer 2 upward along the guide rod 3, and lift the diverter 1 to the pool side together with the mixer 2. Loosen the first fastener 15, rotate the front end of the upper diverter plate (the end away from the submersible mixer) around the hinge 14 to an appropriate angle, increase the inclination angle of the upper diverter plate, and then tighten the first fastener 15. The larger the angle between the upper diverter plate and the fixed plate, the larger the angle between the reflected fluid and the horizontal plane, and the reflected fluid strengthens the flow velocity and upward flow range of the fluid above the axis, and at the same time, strengthens the upward flow effect of the sludge mixture below the axis, so that the sludge is suspended below the water surface.

[0058] If the first velocity sensor at a certain point on the plane detects a flow velocity that is too high, lift the submersible mixer 2 upward along the guide rod 3, and lift the diverter 1 to the pool side together with the mixer 2. Loosen the first fastener 15, rotate the front end of the upper diverter plate (the end away from the submersible mixer) around the hinge 14 to an appropriate angle, reduce the inclination angle of the upper diverter plate, and then tighten the first fastener 15. The smaller the angle between the upper diverter plate and the fixed plate, the smaller the angle between the reflected fluid and the horizontal plane, and the reflected fluid weakens the flow velocity of the fluid above the axis and the upward flow range.

[0059] If the second speed sensor 6 detects that the flow rate is too low, the submersible mixer 2 is lifted upward along the guide rod 3, and the diverter 1 is lifted to the edge of the pool together with the mixer 2. The second fastener 16 is loosened, and the front end of the lower diverter plate (the end away from the submersible mixer) is rotated around the hinge 14 by an appropriate angle, and the inclination angle of the lower diverter plate is increased, and the second fastener 16 is tightened again. The larger the angle between the lower diverter plate and the fixed plate, the larger the angle between the reflected fluid and the horizontal plane, and the reflected fluid strengthens the flow velocity of the fluid below the axis, causing the fluid to tilt and impact the sludge at the bottom of the pool, forming a high-concentration sewage mixture, which is reflected by the bottom of the pool and then moves forward and upward, strengthening the mixing effect at the bottom of the pool, and causing the sewage with a high sludge content to flow upward and forward, so that the sludge will not settle at the bottom of the pool, while increasing the sludge content of the water body above the axis, so that the sludge is better suspended in the water.

[0060] If the second velocity sensor 6 detects that the flow rate is too high, lift the submersible mixer 2 upward along the guide rod 3, and lift the diverter 1 to the pool side together with the mixer 2. Loosen the second fastener 16, rotate the front end of the lower diverter plate (the end away from the submersible mixer) around the hinge 14 to an appropriate angle, reduce the inclination angle of the lower diverter plate, and then tighten the second fastener 16. The smaller the angle between the lower diverter plate and the fixed plate, the smaller the angle between the reflected fluid and the horizontal plane, and the reflected fluid reduces the flow velocity of the fluid below the axis, so that the intensity of the fluid tilting and impacting the sludge at the bottom of the pool is reduced.

[0061] After adjusting the inclination angle of the diverter plate, put the submersible mixer back into the pool and run it. After the flow field of the biochemical pool is stable, judge whether the adjustment of the diverter has achieved the desired effect according to the speed detected by the speed sensor. If the detected speed data is within the preset range, the speed adjustment of the diverter 1 is successful. If it is still too small or too large, readjust it according to the above method until the flow field speed is accurately controlled within the preset range.

[0062] After running for a period of time or when the process parameters change, the flow field of the biological pool is re-evaluated according to the speed detection data at each position and height direction, or according to the sludge concentration sensor at each point to judge the suspended state (concentration) of the activated sludge. If the flow rate changes greatly and deviates greatly from the working range, it can be readjusted according to the above method to change the stirring and sludge suspension effects of each mixer. In this way, the flow field can be repeatedly and accurately controlled to keep a certain velocity gradient in the entire biochemical pool, ensure that there is no dead angle, ensure that the activated sludge is in a suspended state, and ensure the normal operation of the biological pool process.

[0063] The embodiment of the present invention also provides a sewage treatment process adjustment method, which uses the above-mentioned sewage treatment process adjustment device. It includes:

[0064] Step 10, installing the submersible mixer and the diverter, and operating the submersible mixer to generate fluid flowing forward along its axial direction.

[0065] Step 20, in the fluid below the horizontal plane where the axis of the submersible mixer is located, a part of the fluid is incident on the lower diverter plate 13, and the other part of the fluid continues to flow forward below the lower diverter plate; in the fluid incident on the lower diverter plate 13, the fluid close to the axis is first incident on the lower diverter plate 13, and is reflected by the lower diverter plate 13 to generate a reflected fluid, and the reflected fluid interacts with the fluid below that has not yet been incident on the lower diverter plate 13, and the mixed fluid is incident forward and downward on the lower diverter plate 13, and is reflected by the lower diverter plate to generate a reflected fluid, and the reflected fluid is reflected by the lower diverter plate. The jet fluid interacts with the fluid below that has not yet been incident on the lower diverter plate and then is incident on the lower diverter plate; the fluid incident on the lower diverter plate 13 is reflected by the lower diverter plate to form a downward and forward fluid, all the incident fluid and reflected fluid acting on the lower diverter plate interact and mix, then move forward and downward, interact with the fluid flowing forward below the diverter, the mixed fluid flows forward and downward, and then flows upward and forward after being reflected by the bottom of the pool, thereby enhancing the sewage flow speed and mixing effect at the bottom of the pool and enhancing the buoyancy of the sludge.

[0066] Step 30, in the fluid located above the horizontal plane where the axis of the submersible mixer is located, a part of the fluid is incident on the upper diverter plate 12, and the other part of the fluid continues to flow forward above the upper diverter plate; in the fluid incident on the upper diverter plate 12, the fluid close to the axis is first incident on the upper diverter plate 12, and is reflected by the upper diverter plate 12 to generate a reflected fluid, the reflected fluid interacts with the fluid above that has not yet been incident on the upper diverter plate 12, and the mixed fluid is incident on the upper diverter plate 12 forward and upward, and is reflected by the upper diverter plate to generate a reflected fluid, and again interacts with the fluid above that has not yet been incident on the upper diverter plate; the fluid incident on the upper diverter plate 12 is reflected by the upper diverter plate to form an upward and forward fluid, all the incident fluids and reflected fluids acting on the upper diverter plate interact and mix, and then move forward and upward, interact with the fluid flowing upward and upward on the upper diverter plate, and the mixed fluid flows forward and upward, thereby enhancing the flow speed, range and mixing effect of the fluid in the middle and upper parts of the pool, so that the sludge is suspended in the water body in the middle and upper parts.

[0067] Preferably, in step 20, when the fluid is incident on the lower diverter plate 13, most of the fluid is reflected by the lower diverter plate and flows downward and forward, and a small part of the fluid flows forward through the second reflux hole on the lower diverter plate, impacts the sewage at the front end of the diverter and mixes and dilutes with it to form a lower mixed liquid. In step 30, when the fluid is incident on the upper diverter plate 12, most of the fluid is reflected by the upper diverter plate and flows upward and forward, and a small part of the fluid flows forward through the first reflux hole on the upper diverter plate, impacts the sewage at the front end of the diverter and mixes and dilutes with it to form an upper mixed liquid. The upper mixed liquid and the lower mixed liquid are mixed again to reduce the density of the sewage and create conditions for the sludge to float.

[0068] Preferably, the method of this embodiment further includes:

[0069] Step 40, monitor the fluid flow rate below the liquid surface and the fluid flow rate in front of the diverter in real time, and adjust the angle between the upper diverter plate and the fixed plate of the diverter according to the fluid flow rate below the liquid surface; and adjust the angle between the lower diverter plate and the fixed plate of the diverter according to the fluid flow rate in front of the diverter, so as to maintain a certain velocity gradient in the depth direction of the pool.

[0070] Specifically include:

[0071] Step 401, real-time monitoring of the fluid flow rate below the liquid surface and the fluid flow rate in front of the diverter. According to the monitoring data, if the fluid flow rate below the liquid surface or the fluid flow rate in front of the diverter is not within a preset range, the submersible mixer stops running.

[0072] Step 402, if the fluid flow rate below the liquid surface is less than the minimum value of the preset range, the angle between the upper diverter plate and the fixed plate is increased; if the fluid flow rate below the liquid surface is greater than the maximum value of the preset range, the angle between the upper diverter plate and the fixed plate is reduced; if the fluid flow rate directly in front of the diverter is less than the minimum value of the preset range, the angle between the lower diverter plate and the fixed plate is increased; if the fluid flow rate directly in front of the diverter is greater than the maximum value of the preset range, the angle between the lower diverter plate and the fixed plate is reduced.

[0073] Step 403, the submersible mixer starts working and executes step 401.

[0074] In this embodiment, the inclination angles of the upper and lower diverter plates of the diverter are adjusted according to the velocity flow fields at various points at different heights in front of the submersible mixer, and the stirring and sludge suspension effects of the submersible mixer in the depth direction are changed. The flow field is repeatedly adjusted and controlled in this way, so that the entire biochemical pool maintains a certain velocity gradient in the depth direction, and the flow field is adjusted so that sludge precipitation does not occur at the bottom of the pool, and low sludge concentration unevenness does not occur below the liquid surface, thereby ensuring that the activated sludge at different depths is always in a suspended state and ensuring the balanced operation of the biochemical pool process.

[0075] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A sewage treatment process regulating device, characterized in that: The invention comprises a flow divider (1), wherein the flow divider (1) is arranged in front of a submersible mixer (2); the flow divider (1) comprises a fixed plate (11), an upper flow divider plate (12) and a lower flow divider plate (13); the fixed plate (11) is arranged horizontally and is located on a horizontal plane where the axis of the submersible mixer (2) is located; one end of the upper flow divider plate (12) is connected to an end of the fixed plate close to the submersible mixer, and the upper flow divider plate (12) is arranged obliquely above the fixed plate (11), and the oblique direction is upward and away from the submersible mixer; one end of the lower flow divider plate (13) is connected to an end of the fixed plate close to the submersible mixer, and the lower flow divider plate (13) is connected to an end of the fixed plate close to the submersible mixer. 13) is arranged obliquely below the fixed plate (11), and the oblique direction is downward and away from the submersible mixer; the maximum distance between the end of the upper splitter plate (12) away from the submersible mixer and the fixed plate (11) in the vertical direction is 1 / 3 to 2 / 3 of the impeller radius of the submersible mixer; the angle between the upper splitter plate (12) and the fixed plate (11) is 0 to 20°; the maximum distance between the end of the lower splitter plate (13) away from the submersible mixer and the fixed plate (11) in the vertical direction is 1 / 4 to 1 / 3 of the impeller radius of the submersible mixer; the angle between the lower splitter plate (13) and the fixed plate (11) is 0 to 15°; One end of the upper diverter plate (12) is hinged to one end of the fixed plate (11) close to the submersible mixer (2), and the other end of the upper diverter plate (12) is connected to the fixed plate via an upper angle adjustment component, and the upper angle adjustment component is used to adjust the angle between the upper diverter plate (12) and the fixed plate (11); one end of the lower diverter plate (13) is hinged to one end of the fixed plate (11) close to the submersible mixer (2), and the other end of the lower diverter plate (13) is connected to the fixed plate (11) via a lower angle adjustment component, and the lower angle adjustment component is used to adjust the angle between the lower diverter plate (13) and the fixed plate (11); The upper splitter plate is provided with a first reflux hole, and the lower splitter plate is provided with a second reflux hole.

2. The sewage treatment process regulating device according to claim 1, characterized in that: The ends of the upper splitter plate, the fixed plate and the lower splitter plate close to the submersible mixer are all flush and 300 to 800 mm away from the front end of the submersible mixer.

3. A sewage treatment process adjustment method, characterized in that: A sewage treatment process regulating device according to any one of claims 1 to 2; The sewage treatment process adjustment method comprises: Step 10, installing a submersible mixer and a flow divider, and operating the submersible mixer to generate a fluid flowing forward along its axial direction; Step 20, in the fluid below the horizontal plane where the axis of the submersible mixer is located, a portion of the fluid is incident on the lower diverter plate (13), and the other portion of the fluid continues to flow forward below the lower diverter plate; in the fluid incident on the lower diverter plate (13), the fluid close to the axis is first incident on the lower diverter plate (13), and is reflected by the lower diverter plate (13) to generate a reflected fluid, and the reflected fluid interacts with the fluid below that has not yet been incident on the lower diverter plate (13), and the mixed fluid is incident forward and downward on the lower diverter plate (13), and is reflected by the lower diverter plate to generate a reflected fluid, and the reflected fluid interacts again with the fluid below that has not yet been incident on the lower diverter plate and is incident on the lower diverter plate; the fluid incident on the lower diverter plate (13) is reflected by the lower diverter plate to form a downward and forward fluid, and interacts with the fluid flowing forward below the lower diverter plate, and the mixed fluid flows forward and downward, and then flows upward and forward after being reflected by the pool bottom, thereby enhancing the sewage flow speed and mixing effect at the pool bottom and enhancing the buoyancy of the sludge; Step 30, in the fluid located above the horizontal plane where the axis of the submersible mixer is located, a portion of the fluid is incident on the upper diverter plate (12), and another portion of the fluid continues to flow forward above the upper diverter plate; in the fluid incident on the upper diverter plate (12), the fluid close to the axis is first incident on the upper diverter plate (12), and is reflected by the upper diverter plate (12) to generate a reflected fluid, and the reflected fluid interacts with the fluid above that has not yet been incident on the upper diverter plate (12), and the mixed fluid is incident forward and upward on the upper diverter plate (12), and is reflected by the upper diverter plate to generate a reflected fluid, which again interacts with the fluid above that has not yet been incident on the upper diverter plate; the fluid incident on the upper diverter plate (12) is reflected by the upper diverter plate to form an upward and forward fluid, which interacts with the fluid flowing upward and forward on the upper diverter plate, and the mixed fluid flows forward and upward, thereby enhancing the flow speed, range and mixing effect of the fluid in the middle and upper parts of the tank, so that the sludge is suspended in the water body in the middle and upper parts; In step 20, when the fluid is incident on the lower diverter plate (13), most of the fluid is reflected by the lower diverter plate and flows downward and forward, and a small part of the fluid flows forward through the second reflow hole on the lower diverter plate, impacts the sewage at the front end of the diverter and mixes and dilutes with it, forming a lower mixed liquid; in step 30, when the fluid is incident on the upper diverter plate (12), most of the fluid is reflected by the upper diverter plate and flows upward and forward, and a small part of the fluid flows forward through the first reflow hole on the upper diverter plate, impacts the sewage at the front end of the diverter and mixes and dilutes with it, forming an upper mixed liquid; the upper mixed liquid and the lower mixed liquid are mixed again to reduce the density of the sewage, creating conditions for the sludge to float; Also includes: Step 40, real-time monitoring of the fluid flow rate below the liquid surface and the fluid flow rate in front of the diverter, adjusting the angle between the upper diverter plate and the fixed plate of the diverter according to the fluid flow rate below the liquid surface; adjusting the angle between the lower diverter plate and the fixed plate of the diverter according to the fluid flow rate in front of the diverter, so as to maintain a certain velocity gradient in the depth direction of the pool; Specifically include: Step 401, real-time monitoring of the fluid flow rate below the liquid surface and the fluid flow rate in front of the diverter. According to the monitoring data, if the fluid flow rate below the liquid surface or the fluid flow rate in front of the diverter is not within a preset range, the submersible mixer stops running; Step 402, if the fluid flow rate below the liquid surface is less than the minimum value of the preset range, the angle between the upper splitter plate and the fixed plate is increased; if the fluid flow rate below the liquid surface is greater than the maximum value of the preset range, the angle between the upper splitter plate and the fixed plate is decreased; if the fluid flow rate directly in front of the splitter is less than the minimum value of the preset range, the angle between the lower splitter plate and the fixed plate is increased; if the fluid flow rate directly in front of the splitter is greater than the maximum value of the preset range, the angle between the lower splitter plate and the fixed plate is decreased; Step 403, the submersible mixer starts working and executes step 401.

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