A device and method for promoting the generation of granular sludge applicable to a continuous flow reactor

Abstract

The present invention provides a device and method for promoting the generation of granular sludge applicable to a continuous flow reactor. The device includes a left baffle and a right baffle with a spacing therebetween. Inside the left baffle, a left flow guide plate and a left folding plate are sequentially arranged from bottom to top. Inside the right baffle, a right flow guide plate and a right folding plate are sequentially arranged from bottom to top. There is a spacing between the left flow guide plate and the right flow guide plate, and the spacing is adjusted by an adjusting mechanism to control the sludge sedimentation performance. A flow rate adjusting baffle with an adjustable angle is inclinedly arranged on the right baffle, and the residence time of the mixed liquid is controlled by controlling the adjusting angle of the flow rate adjusting baffle. The present invention can be directly installed in an existing continuous flow reactor, is applicable to the transformation of flocculent sludge into granular sludge in the existing continuous flow reactor, and realizes the promotion of the generation and screening of granular sludge through the principle of folding plate precipitation, thereby realizing the transformation of flocculent sludge into granular sludge in the continuous flow reactor.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a device and method for promoting the generation of granular sludge applicable to a continuous flow reactor. Background Art

[0002] The statements in this part only provide background technical information related to the present disclosure, and do not necessarily constitute prior art.

[0003] Aerobic Granular Sludge (hereinafter referred to as AGS) is a microbial aggregate formed by microorganisms aggregating with each other under specific conditions, with a compact structure and regular shape. Compared with the traditional activated sludge method, the AGS technology has better sedimentation performance, better biological enrichment ability, and stronger shock resistance.

[0004] Currently, the research on aerobic granular sludge mainly focuses on intermittent continuous flow reactors because it is easier to create the selection pressure and hydraulic shear force required for the AGS cultivation process in intermittent continuous flow reactors. At present, the sewage treatment technology in China still mainly uses traditional flocculent activated sludge. As of the end of 2020, the treatment technologies of urban sewage treatment plants in the country are still dominated by AAO and oxidation ditches with relatively high proportions. Compared with intermittent continuous flow reactors, continuous flow reactors have the advantages of simple control operation, low installation cost, and large water treatment capacity and low operating cost in their continuous flow mode. Therefore, realizing the operation of AGS under continuous flow conditions has important practical significance. By developing a device for promoting the formation of granular sludge applicable to continuous flow reactors, the application of aerobic granular sludge technology in practical projects can be further promoted. Summary of the Invention

[0005] The present invention provides a device and method for promoting the generation of granular sludge applicable to a continuous flow reactor to solve the problems in the background art. The present invention can be directly installed in an existing continuous flow reactor, and through the principle of baffle sedimentation, it realizes the promotion of the generation and screening of granular sludge, thereby realizing the transformation of flocculent sludge into granular sludge in the continuous flow reactor.

[0006] The technical solution of the present invention is realized as follows:

[0007] A device for promoting the generation of granular sludge applicable to a continuous flow reactor includes a left baffle and a right baffle with a spacing therebetween. Inside the left baffle, a left flow guide plate and a left folding plate are sequentially arranged from bottom to top. Inside the right baffle, a right flow guide plate and a right folding plate are sequentially arranged from bottom to top; there is a spacing between the left flow guide plate and the right flow guide plate, and the spacing is adjusted by an adjusting mechanism to control the sludge sedimentation performance; a flow regulating baffle with an adjustable angle is inclined on the right baffle, and the retention time of the mixed liquid is controlled by controlling the adjustment angle of the flow regulating baffle.

[0008] Further optimize the technical solution, and fixing frames are arranged between the left baffle and the left folding plate and between the right baffle and the right folding plate.

[0009] Further optimize the technical solution, the adjusting mechanism includes an L-shaped bent rod with one end connected to the fixing frame and the other end connected to the left baffle. An expansion rod is inserted into the L-shaped bent rod. One end of the expansion rod is fixed to the side wall of the continuous flow reactor, and the expansion rod is positioned on the L-shaped bent rod through an expansion rod fixing node.

[0010] Further optimize the technical solution, the rear side wall of the left baffle is slidably fitted on the side wall of the continuous flow reactor; the right baffle is supported on the bottom wall of the continuous flow reactor; there is a spacing between the left baffle and the bottom wall of the continuous flow reactor, and a mixed liquid inlet is formed between the bottom of the left baffle and the right baffle.

[0011] A method for promoting the generation of granular sludge, which is based on the above-mentioned device for promoting the generation of granular sludge applicable to a continuous flow reactor, and includes the following steps:

[0012] S1. Determine the size of the above-mentioned device for promoting the generation of granular sludge applicable to a continuous flow reactor according to the size of the continuous flow reactor, and perform processing.

[0013] S2. Place the above-mentioned device for promoting the generation of granular sludge applicable to a continuous flow reactor processed in step S1 in the middle and end sections of the continuous flow reactor.

[0014] S3. During the plug flow operation, the mixed liquid enters the above-mentioned device for promoting the generation of granular sludge applicable to a continuous flow reactor. The mud-water mixture enters the folding plate sedimentation area through the left guide plate and the right guide plate. The sludge with a larger specific gravity is continuously gathered at the bottoms of the left baffle and the right baffle, while the flocculent sludge with a smaller specific gravity flows out through the flow regulating baffle.

[0015] S4. Control the outflow velocity of the supernatant by adjusting the horizontal angle of the flow regulating baffle; control the sedimentation performance of the sludge by controlling the spacing between the left guide plate and the right guide plate.

[0016] By continuously reducing the horizontal angle of the flow regulating baffle and increasing the folding plate spacing, the flocculent sludge is finally completely transformed into granular sludge, and the efficient operation of the continuous flow reactor is realized.

[0017] Further optimize the technical solution, the proportion of the above-mentioned device for promoting the generation of granular sludge applicable to a continuous flow reactor in the flow direction length of the continuous flow reactor should be between 20% and 30%.

[0018] Further optimize the technical solution. In step S4, when the flow regulating baffle is at 90° to the horizontal, the outflow rate of the supernatant is the slowest; when the flow regulating baffle is at 0° to the horizontal, the outflow rate of the supernatant is the fastest; for every 10° change in the horizontal angle of the flow regulating baffle, the outflow rate changes by 5%.

[0019] Further optimize the technical solution. In step S4, the telescopic rod is controlled by fixing the node of the telescopic rod to adjust the extension and retraction of the telescopic rod, so as to control the distance between the left deflector and the right deflector.

[0020] Further optimize the technical solution. In step S4, the distance between the left deflector and the right deflector is determined according to the proportion of granular sludge, sludge particle size, MLSS, MLVSS and SVI values in the continuous flow reactor.

[0021] Further optimize the technical solution, which further includes the following steps:

[0022] S5. At the initial stage of putting the granular sludge promotion and generation device suitable for the continuous flow reactor into use, the sludge form in the continuous flow reactor is mainly flocculent sludge. At this time, set the horizontal angle of the flow regulating baffle to 90° to prevent sludge loss;

[0023] Operate for 30 days, and monitor the MLSS, MLVSS and SVI values of the continuous flow reactor every day to realize the transformation of flocculent sludge into granular sludge;

[0024] S6. After some flocculent sludge in the continuous flow reactor is transformed into granular sludge, adjust the horizontal angle of the flow regulating baffle to 90°, 80°, 70° to 0° in steps of 10°; each angle adjustment process operates for 30 days, and finally completely transform the flocculent sludge into granular sludge;

[0025] S7. When the granular sludge mainly exists in the continuous flow reactor, the sludge particle size is greater than 0.5 mm, and the SVI value is 10, increase the distance between the left deflector and the right deflector and the distance between the left folding plate and the right folding plate to improve the biological treatment efficiency of the granular sludge in the continuous flow reactor.

[0026] Adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0027] 1. The granular sludge promotion and generation device suitable for the continuous flow reactor provided by the present invention is an in-situ transformation device for quickly promoting the generation of granular sludge from flocculent sludge in the existing continuous flow reactor. This device can be directly installed in the existing continuous flow reactor, and can be directly applied to the transformation of flocculent sludge into granular sludge in the existing continuous flow reactor. Through the principle of folded plate precipitation, the promotion and generation and screening of granular sludge are realized, so as to realize the transformation of flocculent sludge into granular sludge in the continuous flow reactor.

[0028] A device for promoting the generation of granular sludge applicable to a continuous flow reactor provided by the present invention helps to cultivate granular sludge, has the effect of sludge-water separation, improves the water treatment efficiency, and has the advantages of simple device and easy flexible adjustment. Therefore, this device is applicable to the upgrading, transformation and optimization of all types of continuous flow granular sludge processes in China.

[0029] 2. For a device for promoting the generation of granular sludge applicable to a continuous flow reactor provided by the present invention, at the initial stage of feeding, the horizontal angle of the flow regulating baffle is 90° to prevent sludge loss and affect the treatment effect, and realize the transformation of flocculent sludge into granular sludge. Then, the horizontal angle of the flow regulating baffle is adjusted in turn, and it is operated for a period of time at each angle to completely transform the flocculent sludge into granular sludge. And by appropriately enlarging the distance between the guide plate and the baffle plate, the biological treatment efficiency of the granular sludge in the continuous flow reactor is improved.

[0030] 3. A method for promoting the generation of granular sludge provided by the present invention places the processed device in the middle and end sections of the existing continuous flow reactor, realizing the uniform granulation and distribution of granular sludge in the continuous flow reactor. The length ratio of the device in the flow direction of the aerobic section of the continuous flow reactor should be between 20% and 30%, realizing that the continuous flow reactor has both treatment function and granular sludge promoting function.

[0031] 4. A method for promoting the generation of granular sludge provided by the present invention can adjust the telescopic length of the telescopic rod by controlling the fixed node of the telescopic rod to control the distance between the left guide plate and the right guide plate, so as to adapt to the actual conditions in different continuous flow reactors.

[0032] 5. For a device and method for promoting the generation of granular sludge applicable to a continuous flow reactor provided by the present invention, after 5 months of operation, it is found that this device can completely transform the flocculent sludge in the aerobic section of the AAO process into granular sludge. The MLSS in the aerobic tank increases from 2 - 3 g / L to 5.6 g / L; the MLVSS increases from 1.2 - 1.9 g / L to 3.9 g / L; the SVI 30 decreases from 95 mL / g to 15 mL / g. Granulated sludge can be clearly seen in the aerobic section, the sludge particle size reaches 0.5 - 1.2 mm, the sludge sedimentation performance is significantly enhanced, and the effluent can reach the first-class A standard. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0034] Figure 1 This is a schematic structural view of a device for promoting the generation of granular sludge applicable to a continuous flow reactor according to the present invention;

[0035] Figure 2 This is the front view of a device for promoting the generation of granular sludge applicable to a continuous flow reactor according to the present invention;

[0036] Figure 3 This is the top view of a device for promoting the generation of granular sludge applicable to a continuous flow reactor according to the present invention;

[0037] Figure 4 This is a schematic structural view of a device for promoting the generation of granular sludge applicable to a continuous flow reactor when applied to a continuous flow reactor according to the present invention.

[0038] Wherein: 1. Left baffle; 2. Fixed node of telescopic rod; 3. Telescopic rod; 4. Flow regulating baffle; 5. Fixed frame; 6. Left folding plate; 7. Right folding plate; 8. Left guide plate; 9. Right guide plate; 10. Right baffle. Specific embodiments

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0040] Embodiment 1

[0041] A device for promoting the generation of granular sludge applicable to a continuous flow reactor, in combination with Figures 1 to 4 as shown, includes a left baffle 1, a fixed node 2 of a telescopic rod, a telescopic rod 3, a flow regulating baffle 4, a fixed frame 5, a left folding plate 6, a right folding plate 7, a left guide plate 8, a right guide plate 9 and a right baffle 10.

[0042] There is a spacing between the left baffle 1 and the right baffle 10. Inside the left baffle 1, a left guide plate 8 and a left folding plate 6 are sequentially arranged from bottom to top. Inside the right baffle 10, a right guide plate 9 and a right folding plate 7 are sequentially arranged from bottom to top. There is a spacing between the left guide plate 8 and the right guide plate 9 and the spacing is adjusted by an adjusting mechanism to control the sludge sedimentation performance. A flow regulating baffle 4 with an adjustable angle is inclined on the right baffle 10, and the retention time of the mixed liquid and the outflow rate of the supernatant are controlled by controlling the adjustment angle of the flow regulating baffle 4.

[0043] The above-mentioned granular sludge promotion generation device suitable for a continuous flow reactor, at the initial stage of being put into operation, sets the horizontal angle of the flow regulating baffle 4 to 90° to prevent sludge loss and affect the treatment effect, and realizes the transformation of flocculated sludge into granular sludge; then the horizontal angle of the flow regulating baffle 4 is adjusted in sequence, and the flocculated sludge is completely transformed into granular sludge at each angle for a period of time. And by appropriately enlarging the spacing between the guide plate and the folding plate, the biological treatment efficiency of the granular sludge in the continuous flow reactor is improved.

[0044] A fixing frame 5 is provided between the left baffle plate 1 and the left folding plate 6 and between the right baffle plate 10 and the right folding plate 7 .

[0045] The adjustment mechanism includes an L-shaped bending rod, a telescopic rod 3 and a telescopic rod fixing node 2. One end of the L-shaped bending rod is connected to the fixing frame 5 and the other end is connected to the left baffle 1. The inside of the L-shaped bending rod is penetrated by a telescopic rod 3, one end of the telescopic rod 3 is fixed to the side wall of the continuous flow reactor, and the telescopic rod 3 is positioned on the L-shaped bending rod through the telescopic rod fixing node 2. That is, when the telescopic rod fixing node 2 is adjusted, the position of the L-shaped bending rod on the telescopic rod 3 can be adjusted, thereby adjusting the horizontal position of the left baffle 1 fixed to the L-shaped bending rod.

[0046] The rear side wall of the left baffle 1 is slidably mounted on the side wall of the continuous flow reactor to facilitate better positioning and adjustment of the left baffle 1. The right baffle 10 is supported and mounted on the bottom wall of the continuous flow reactor. There is a gap between the left baffle 1 and the bottom wall of the continuous flow reactor, and a mixed liquid inlet is formed between the bottom of the left baffle 1 and the right baffle 10.

[0047] Example 2

[0048] Based on Example 1, this embodiment discloses a method for promoting the generation of granular sludge, comprising the following steps:

[0049] S1. Determine the size of the granular sludge promotion device according to the specific length, width and height of the continuous flow reactor and carry out processing.

[0050] In order to achieve long-term operation, the device of the present invention is mainly made of stainless steel, and the folding plate and the guide plate are made of corrosion-resistant plastic.

[0051] S2. To achieve uniform granulation and distribution of granular sludge in the continuous flow reactor, the processed device is placed in the middle and end of the existing continuous flow reactor. To achieve both treatment and granular sludge promotion functions of the continuous flow reactor, the device should account for 20%-30% of the length of the aerobic section of the continuous flow reactor.

[0052] S3. During the operation of the flow-pushing process, the mixed liquor enters the device of the present invention. The mud-water mixture enters the folded plate sedimentation area after passing through the left guide plate 8 and the right guide plate 9. Among them, the sludge with a relatively large specific gravity is continuously gathered at the bottom of the continuous flow reactor, while the flocculent sludge with a relatively small specific gravity flows out through the flow rate adjustment baffle 4.

[0053] S4. After the device of the present invention is placed in the continuous flow reactor, the horizontal angle of the flow rate adjustment baffle 4 is adjusted to control the outflow rate, and the distance between the left guide plate 8 and the right guide plate 9 is controlled to control the sedimentation performance. By continuously reducing the horizontal angle of the flow rate adjustment baffle 4 and increasing the folded plate distance, the flocculent sludge is finally completely transformed into granular sludge, and the efficient operation of the continuous flow reactor is realized.

[0054] In step S4: The flow rate adjustment baffle 4 can be flexibly adjusted to control the residence time of the mixed liquor in the device of the present invention. When the flow rate adjustment baffle 4 is at 90° to the horizontal, the outflow rate of the supernatant is the slowest, and when the flow rate adjustment baffle 4 is at 0° to the horizontal, the outflow rate of the supernatant is the fastest. According to experimental measurements, when the horizontal angle of the flow rate adjustment baffle 4 changes by 10°, the outflow rate changes by 5%.

[0055] In step S4: By controlling the fixed node 2 of the telescopic rod, the telescopic length of the telescopic rod 3 can be adjusted to control the distance between the left guide plate 8 and the right guide plate 9, so as to adapt to the actual conditions in different continuous flow reactors. The distance between the left guide plate 8 and the right guide plate 9 is determined according to the proportion of granular sludge, sludge particle size, MLSS, MLVSS and SVI values in the continuous flow reactor. Generally, in order to achieve efficient sedimentation of flocculent sludge and its transformation into granular sludge, the distance between the left guide plate 8 and the right guide plate 9 should be set to 1 m to 2 m.

[0056] S5. In the initial stage when the device of the present invention is placed, the sludge form in the continuous flow reactor is mainly flocculent sludge. At this time, the horizontal angle of the flow rate adjustment baffle 4 is set to 90° to prevent sludge loss and affect the treatment effect. Operate under the above conditions for 30 days, and monitor the MLSS, MLVSS and SVI values of the continuous flow reactor every day to realize the transformation of flocculent sludge into granular sludge.

[0057] S6. After part of the flocculent sludge in the continuous flow reactor is transformed into granular sludge, take 10° as the step length, and sequentially adjust the horizontal angle of the flow rate adjustment baffle 4 to 80°, 70°, 60° to 0°. Each angle adjustment process runs for 30 days, and finally the flocculent sludge is completely transformed into granular sludge.

[0058] S7. When the continuous flow reactor mainly contains granular sludge, the sludge particle size is greater than 0.5 mm, and the SVI value is about 10, the distance between the guide plate and the folded plate can be appropriately enlarged to improve the biological treatment efficiency of the granular sludge in the continuous flow reactor.

[0059] Example 3

[0060] On the basis of Example 1 and Example 2, this example is carried out on the basis of the transformation of the AAO process of a certain sewage treatment plant in a certain place. The specific water quality is as follows: the COD concentration is 210 - 360 mg / L; NH4 + -N concentration is: 22 - 57 mg / L; TN concentration is: 28 - 69 mg / L; TP concentration is: 3 - 7 mg / L; MLSS in the aerobic tank is 2 - 3 g / L; MLVSS is 1.2 - 1.9 g / L; SVI 30 is 95 mL / g; the effluent meets the first-class A standard.

[0061] The object of the present invention is achieved by the following technical solutions:

[0062] S10. The length, width and height of the aerobic tank of the water treatment plant process are respectively: 15 m × 5 m × 5 m. According to the reaction tank, the dimensions of the device of the present invention are determined as: 3 m × 5 m × 5 m. The minimum distance between the corrugated plates is set to 1.2 m, and the proportion of the device in the flow direction length of the continuous flow reactor is 30%.

[0063] S20. According to the proportion of granular sludge, sludge particle size, MLSS, MLVSS and SVI values in the aerobic section of the water treatment plant process, the horizontal angle of the flow regulating baffle 4 is set to 90° to control the outflow velocity, and the distance between the corrugated plates is 1.5 m to ensure the sedimentation efficiency. It operates under this condition for 1 month. The operation results show that: the MLSS in the aerobic tank increases from 2.2 g / L to 2.6 g / L; the MLVSS increases from 1.4 g / L to 1.8 g / L; the SVI decreases from 95 mL / g to 83 mL / g; granular sludge can be clearly seen in the aerobic section, the sludge particle size reaches 0.1 - 0.5 mm, and the sludge sedimentation performance is significantly enhanced.

[0064] S30. As Figure 4 , the device of the present invention is placed at the interruption (7 m along the flow direction) and the end (10 m along the flow direction) of the aerobic section of the continuous flow reactor of the water treatment plant. During the plug flow operation, the mixed liquid enters the device of the present invention, and the mud-water mixture enters the corrugated plate sedimentation area through the left guide plate 8 and the right guide plate 9. Among them, the sludge with a larger specific gravity is continuously gathered at the bottom of the continuous flow reactor, while the flocculent sludge with a smaller specific gravity flows out through the flow regulating baffle 4.

[0065] S40. Measure the proportion of granular sludge in the aerobic section, sludge particle size, MLSS, MLVSS, and SVI values; set the horizontal angle of the flow regulating baffle 4 to 80° to control the outflow velocity; the distance between the folded plates is 1.6 m to ensure the sedimentation efficiency, and continue to operate under this condition for 1 month. The operation results show that: the MLSS in the aerobic tank increases from 2.6 g / L to 3.1 g / L; the MLVSS increases from 1.8 g / L to 2.1 g / L; the SVI decreases from 83 mL / g to 72 mL / g; granular sludge can be clearly seen in the aerobic section, the sludge particle size reaches 0.3 - 0.6 mm, and the sludge sedimentation performance is significantly enhanced.

[0066] S50. Repeat step S40, each time reducing the horizontal angle of the flow regulating baffle 4 by 10°, and increasing the distance between the folded plates by 0.5 m until the horizontal angle drops to 0° and the distance between the folded plates increases to 2 m.

[0067] S60. The actual results show that after 5 months of operation, the MLSS in the aerobic tank increases to 5.6 g / L; the MLVSS increases to 3.9 g / L; the SVI decreases to 15 mL / g; granular sludge can be clearly seen in the aerobic section, the sludge particle size reaches 0.5 - 1.2 mm, and the sludge sedimentation performance is significantly enhanced.

[0068] S70. The long-term operation results prove that when the flocculent sludge in the continuous flow reactor is converted into granular sludge, the effluent quality still meets the first-class A standard.

[0069] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for promoting the generation of granular sludge applicable to a continuous flow reactor, characterized in that, The invention comprises a left baffle plate (1) and a right baffle plate (10) with a spacing therebetween; a left guide plate (8) and a left folding plate (6) are arranged in sequence from bottom to top on the inner side of the left baffle plate (1); a right guide plate (9) and a right folding plate (7) are arranged in sequence from bottom to top on the inner side of the right baffle plate (10); a spacing is arranged between the left guide plate (8) and the right guide plate (9), and the spacing is adjusted by an adjustment mechanism to control the sludge settling performance; a flow regulating baffle plate (4) with an adjustable angle is arranged obliquely on the right baffle plate (10); and the residence time of the mixed liquid is controlled by controlling the adjustment angle of the flow regulating baffle plate (4).

2. The particle sludge promoting generation device applicable to a continuous flow reactor according to claim 1, characterized in that, A fixing frame (5) is provided between the left baffle plate (1) and the left folding plate (6), and between the right baffle plate (10) and the right folding plate (7).

3. The particle sludge promoting generation device applicable to a continuous flow reactor according to claim 2, wherein The adjustment mechanism comprises an L-shaped bent rod, one end of which is connected to a fixing frame (5) and the other end of which is connected to a left baffle (1); a telescopic rod (3) is passed through the interior of the L-shaped bent rod; one end of the telescopic rod (3) is fixed to a side wall of the continuous flow reactor; and the telescopic rod (3) is positioned on the L-shaped bent rod via a telescopic rod fixing node (2).

4. A device for promoting the generation of granular sludge applicable to a continuous flow reactor according to any one of claims 1 to 3, characterized in that, The rear side wall of the left baffle plate (1) is slidably mounted on the side wall of the continuous flow reactor; the right baffle plate (10) is supported and mounted on the bottom wall of the continuous flow reactor; there is a gap between the left baffle plate (1) and the bottom wall of the continuous flow reactor, and a mixed liquid inlet is formed between the bottom of the left baffle plate (1) and the right baffle plate (10).

5. A method for promoting the generation of granular sludge, characterized in that, The method is based on the granular sludge promoting generation device suitable for a continuous flow reactor as described in claim 3, and comprises the following steps: S1. Determine the size of the granular sludge promoting generation device suitable for the continuous flow reactor according to the size of the continuous flow reactor, and process it; S2, placing the granular sludge promoting generation device suitable for a continuous flow reactor processed in step S1 in the middle section and the end section of the continuous flow reactor; S3, during the plug flow operation, the mixed liquid enters the granular sludge promotion generation device suitable for a continuous flow reactor, and the sludge-water mixed liquid passes through the left guide plate (8) and the right guide plate (9) and then enters the folded plate sedimentation area, wherein the sludge with a higher specific gravity is continuously gathered at the bottom of the left baffle (1) and the right baffle (10), while the flocculent sludge with a lower specific gravity flows out through the flow regulating baffle (4); S4, by adjusting the horizontal angle of the flow regulating baffle (4), the outflow velocity of the supernatant flow is controlled; by controlling the distance between the left guide plate (8) and the right guide plate (9), the settling performance of the sludge is controlled; By continuously reducing the horizontal angle of the flow regulating baffle (4) and increasing the folding plate spacing, the flocculated sludge is eventually completely transformed into granular sludge, and efficient operation of the continuous flow reactor is achieved.

6. A method for promoting the generation of granular sludge according to claim 5, characterized in that, In the step S2, the proportion of the granular sludge promoting generation device suitable for the continuous flow reactor in the flow direction length of the continuous flow reactor should be between 20% and 30%.

7. A method for promoting the generation of granular sludge according to claim 5, characterized in that, In step S4, when the flow regulating baffle (4) is at 90° to the horizontal, the outflow rate of the supernatant is the slowest; when the flow regulating baffle (4) is at 0° to the horizontal, the outflow rate of the supernatant is the fastest; for every 10° change in the horizontal angle of the flow regulating baffle, the outflow rate changes by 5%.

8. A method for promoting the generation of granular sludge according to claim 5, characterized in that, In step S4, the telescopic rod (3) is adjusted by controlling the telescopic rod fixed node (2) to control the distance between the left deflector (8) and the right deflector (9).

9. A method for promoting the generation of granular sludge according to claim 5, characterized in that, In step S4, the distance between the left deflector (8) and the right deflector (9) is determined according to the proportion of granular sludge, sludge particle size, MLSS, MLVSS and SVI values in the continuous flow reactor.

10. A method for promoting the generation of granular sludge according to claim 9, characterized in that, It also includes the following steps: S5. At the initial stage of putting the granular sludge promoting generation device suitable for the continuous flow reactor, the sludge form in the continuous flow reactor is mainly flocculent sludge. At this time, the horizontal angle of the flow regulating baffle (4) is set to 90° to prevent sludge loss; Operate for 30 days, and monitor the MLSS, MLVSS and SVI values of the continuous flow reactor every day to realize the transformation of flocculent sludge into granular sludge; S6. After part of the flocculent sludge in the continuous flow reactor is transformed into granular sludge, adjust the horizontal angle of the flow regulating baffle (4) to 90°, 80°, 70° to 0° in steps of 10°; each angle adjustment process operates for 30 days, and finally completely transforms the flocculent sludge into granular sludge; S7. When the continuous flow reactor is mainly composed of granular sludge, the sludge particle size is greater than 0.5 mm, and the SVI value is 10, increase the distance between the left deflector (8) and the right deflector (9) and the distance between the left folding plate (6) and the right folding plate (7) to improve the biological treatment efficiency of the granular sludge in the continuous flow reactor.

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