Outlet system of circulating bioreactor and circulating bioreactor

Abstract

The present application belongs to the technical field of water treatment, and provides a water outlet system of a circulating bioreactor, comprising: a gate plate, which is arranged between the overflow weir and the water outlet pipe; when the gate plate is closed, the overflow weir and the water outlet pipe are disconnected; when the gate plate is opened, the overflow weir and the water outlet pipe are connected; a driving device, the output end of the driving device is connected to the gate plate, and is used to drive the gate plate to close or open. Compared with the prior art of installing solenoid valves or electric valves on the water outlet pipe one by one, the technical solution of the present application can save huge economic costs when applied on a large scale, and the structure of the gate plate and the driving device and the connection structure between the two and the circulating bioreactor are easy to repair and replace.

Description

Technical Field

[0001] The present application belongs to the technical field of water treatment, and in particular to an effluent system of a circulating bioreactor and a circulating bioreactor. Background Art

[0002] The existing sewage treatment biological filter is equipped with biological fillers (filter materials) for the growth of attached microorganisms, the physical filter is equipped with multi-layer filter materials for intercepting pollutants, and the sedimentation tank is usually equipped with inclined tubes or inclined plates to improve the efficiency of mud-water separation. However, in the long-term operation of sewage treatment, whether it is an ordinary filter or a sedimentation tank, these fillers are prone to blockage and mud accumulation. It is usually necessary to set up a backwashing device to backwash the fillers regularly to ensure that the fillers can effectively play their role. In order to prevent the effluent water quality from being affected during the backwashing process, it is necessary to control the start and stop of the backwashing pipeline and the inlet and outlet water pipelines. The existing backwashing system usually adopts the automatic opening and closing control of the valve by directly installing electric valves or solenoid valves on the backwashing pipeline and the inlet and outlet water pipelines. However, in large-scale applications, installing electric valves or solenoid valves on each pipeline will increase huge economic costs. At the same time, the operation, management and maintenance of one-to-one pipeline electric valves or solenoid valves are relatively complicated. Utility Model Content

[0003] In order to reduce economic costs and facilitate management and maintenance, the present application provides a water outlet system of a circulating bioreactor and a circulating bioreactor.

[0004] The effluent system of the circulating bioreactor includes an overflow weir arranged in the circulating bioreactor and an effluent pipe connected to the overflow weir; a backwash pipe is also arranged in the circulating bioreactor. In the present application, the effluent system also includes:

[0005] a gate plate, arranged between the overflow weir and the water outlet pipe; when the gate plate is closed, the overflow weir and the water outlet pipe are disconnected; when the gate plate is opened, the overflow weir and the water outlet pipe are connected;

[0006] A driving device, wherein the output end of the driving device is connected to the gate plate, and is used to drive the gate plate to close or open.

[0007] In one embodiment, the driving device is installed above the overflow weir.

[0008] In one embodiment, the overflow weir is tubular, and the water outlet system further comprises:

[0009] A first connecting rod, connecting the gate plate and an output end of the driving device;

[0010] A transition chamber, wherein a through hole penetrating the transition chamber is provided on the transition chamber, the overflow weir and the water outlet pipe are butted against each other in the through hole, the gate is located in the transition chamber and between the overflow weir and the water outlet pipe, a connecting channel is provided on the cavity wall of the transition chamber, the first connecting rod is located in the connecting channel, one end of the first connecting rod extends out of the transition chamber and is connected to the output end of the driving device, and the other end is located in the transition chamber and is connected to the gate;

[0011] The gate blocks the through hole when it is closed.

[0012] In one embodiment, the first connecting rod is hinged to the output end of the driving device.

[0013] In one embodiment, the transition chamber and the driving device are both installed on the inner wall of the circulating flow bioreactor.

[0014] In one embodiment, the overflow weir is trough-shaped, the output of the driving device is linear displacement, and the water outlet system further comprises:

[0015] a mounting frame, the driving device being hinged on the mounting frame;

[0016] A second connecting rod, wherein the first end of the second connecting rod is hinged to the installation frame and the hinge position of the two is lower than the hinge position of the driving device on the installation frame, the second end of the second connecting rod is hinged to the output end of the driving device, and the gate is fixed on the second connecting rod.

[0017] In one embodiment, the overflow weir is trough-shaped, the output of the driving device is linear displacement, and the water outlet system further comprises:

[0018] a mounting frame, the driving device being hinged on the mounting frame;

[0019] The connecting frame is L-shaped, and the corners of the connecting frame are hinged on the installation frame and the hinge position of the two is lower than the hinge position of the driving device on the installation frame. The first end of the connecting frame is hinged to the output end of the driving device, and the second end of the connecting frame fixes the gate.

[0020] In one embodiment, the mounting frame is mounted on the inner wall of the circulating bioreactor; and the gate is located on one side of the overflow weir.

[0021] The present application also provides a circulating bioreactor, comprising the above-mentioned effluent system.

[0022] In one embodiment, the loop bioreactor further comprises:

[0023] A backwashing pipeline and a valve located on the backwashing pipeline;

[0024] A controller, wherein the input end of the controller is connected to a backwashing program start button, and the output end of the controller is connected to a control circuit of the drive device and to a control circuit of a valve on the backwashing pipeline.

[0025] The effluent system of the circulating bioreactor provided in the present application includes: a gate plate, which is arranged between the overflow weir and the outlet pipe; when the gate plate is closed, the overflow weir and the outlet pipe are disconnected; when the gate plate is opened, the overflow valve and the outlet pipe are connected; a driving device, the output end of the driving device is connected to the gate plate, and is used to drive the gate plate to close or open. Through the above technical scheme, the connection between the overflow weir and the outlet pipe can be disconnected before backwashing, so as to avoid affecting the effluent water quality during the backwashing process. Compared with the prior art of installing solenoid valves or electric valves on the outlet pipe one by one, the technical scheme of the present application can save huge economic costs when applied on a large scale, and the structure of the gate plate and the driving device and the connection structure between the two and the circulating bioreactor are easy to repair and replace.

[0026] The present application also provides a circulating bioreactor, which includes the above-mentioned water outlet system and thus has the above-mentioned technical effects, which will not be described in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the effluent system of the loop bioreactor in Example 1 provided in this application;

[0028] Figure 2 and Figure 3 A schematic diagram of the structure of the first gate and the driving device in Example 1 provided in this application;

[0029] Figure 4 and Figure 5 A schematic diagram of the structure of the second gate and the driving device in Example 2 provided in this application;

[0030] Figure 6 and Figure 7 A schematic diagram of the structure of the third gate and the driving device in Example 3 provided in this application;

[0031] Figure 8 Schematic diagram of the explosion structure of the transition cavity in Example 3 provided in this application.

[0032] Numbers in the figure:

[0033] Circulating bioreactor 1, first overflow weir 2, first gate plate 3, driving device 4, backwashing pipeline 5, mounting frame 6, connecting frame 7, second connecting rod 8, second gate plate 9, second overflow weir 10, outlet pipe 11, first connecting rod 12, transition chamber 13, third gate plate 14, through hole 16, third overflow weir 17;

[0034] A first cavity 1301 , a sealing plate 1302 , and a second cavity 1303 . DETAILED DESCRIPTION

[0035] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. The principles and features of the present invention are described below in combination with the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict. The examples cited are only used to explain the present invention and are not used to limit the scope of the present invention.

[0036] Example 1

[0037] This embodiment provides a water outlet system for a circulating bioreactor, referring to Figures 1 to 3 , comprising a first overflow weir 2 disposed inside the circulating bioreactor 1 and an outlet pipe connected to the first overflow weir 2 ( Figure 1 A backwash pipe 5 is also provided in the circulating bioreactor 1, and the effluent system further comprises:

[0038] A first gate plate 3 is arranged between the first overflow weir 2 and the outlet pipe; when the first gate plate 3 is closed, the first overflow weir 2 and the outlet pipe are disconnected; when the first gate plate 3 is opened, the first overflow weir 2 and the outlet pipe are connected;

[0039] The driving device 4 has an output end connected to the first gate plate 3 and is used to drive the first gate plate 3 to close or open.

[0040] Through the above technical solution, the connection between the first overflow weir 2 and the outlet pipe can be disconnected before backwashing, so as to avoid affecting the quality of the outlet water during the backwashing process. Compared with the prior art of installing solenoid valves or electric valves on the outlet pipes one by one, the technical solution of this embodiment can save huge economic costs when applied on a large scale, and the structure of the first gate plate 3 and the driving device 4 and the connection structure between the two and the circulating bioreactor 1 are easy to repair and replace.

[0041] In this embodiment, the driving device 4 is installed above the first overflow weir 2 and does not need to be immersed in water, so the waterproof performance requirements of the driving device 4 are low.

[0042] In this embodiment, the output of the driving device 4 is a linear displacement, and the driving device 4 may be an electric cylinder, a pneumatic cylinder or a hydraulic cylinder.

[0043] In this embodiment, the first overflow weir 2 is trough-shaped, and one end of the first overflow weir 2 connected to the inner wall of the circulating bioreactor is communicated with the outlet pipe. The outlet system further includes:

[0044] The mounting frame 6, the driving device 4 is hinged to the upper frame of the mounting frame 6;

[0045] The connecting frame 7 is L-shaped, and the corner of the connecting frame 7 is hinged on the rotating shaft at the lower part of the installation frame 6. The first end of the connecting frame 7 is hinged to the output end of the driving device 4, and the second end of the connecting frame 7 fixes the first gate plate 3.

[0046] When the cylinder rod of the driving device 4 is extended, the first gate plate 3 moves downward toward the inner wall of the circulating bioreactor until it fits in with it, thereby disconnecting the first overflow weir 2 from the outlet pipe; when the cylinder rod of the driving device 4 is retracted into the cylinder body, the first gate plate 3 moves upward away from the inner wall of the circulating bioreactor 1, thereby connecting the first overflow weir 2 to the outlet pipe.

[0047] In one embodiment, the mounting frame 6 is mounted on the inner wall of the circulating bioreactor 1; the first gate plate 3 is located on one side of the first overflow weir 2, which is convenient for installation and maintenance.

[0048] In this embodiment, the driving device 4 can be installed on the inner wall of the circulating bioreactor 1 by means of fasteners such as screws, and the first gate plate 3 blocks the outlet pipe from the inside of the circulating bioreactor 1. Compared with the device arranged outside the circulating bioreactor 1, this embodiment can reduce the amount of mixture overflowing into the first overflow weir 2 during backwashing and entering the outlet pipe.

[0049] Example 2

[0050] Reference Figure 3 and Figure 4 Compared with Example 1, in the effluent system of the circulating bioreactor provided in this embodiment, the second overflow weir 10 is trough-shaped, and its connection position with the effluent pipe 11 is at the bottom of the trough. The output of the driving device 4 is linear displacement, and the driving device 4 can be an electric cylinder, a pneumatic cylinder or a hydraulic cylinder.

[0051] Likewise, the driving device 4 is hinged to the upper side frame of the installation frame 6 .

[0052] In this embodiment, the water outlet system comprises:

[0053] The second connecting rod 8 , the first end of the second connecting rod 8 is hinged on the rotating shaft at the lower part of the installation frame 6 , the second end of the second connecting rod 8 is hinged to the output end of the driving device 4 , and the second gate plate 9 is fixed on the second connecting rod 8 .

[0054] The mounting frame 6 is mounted on the inner wall of the circulating bioreactor 1; the second gate plate 9 is located on one side of the second overflow weir 10, which is convenient for installation and maintenance.

[0055] When the cylinder rod of the driving device 4 is extended, the second gate plate 9 moves downward toward the bottom of the groove of the second overflow weir 10 until it fits therewith, thereby disconnecting the second overflow weir 10 from the water outlet pipe 11; when the cylinder rod of the driving device 4 is retracted into the cylinder body, the second gate plate 9 moves upward away from the bottom of the groove of the second overflow weir 10, thereby connecting the first overflow weir 2 with the water outlet pipe 11.

[0056] Example 3

[0057] Reference Figure 6 and Figure 7 Compared with Example 1, in the effluent system of the circulating bioreactor provided in this embodiment, the third overflow weir 17 is tubular, and the effluent system further comprises:

[0058] A first connecting rod 12, connecting the third gate plate 14 and the output end of the driving device 4;

[0059] The transition chamber 13 is provided with a through hole 16 penetrating the transition chamber, and the third overflow weir 17 is butted with the outlet pipe in the through hole 16. The third gate plate 14 is located in the transition chamber 13 and between the third overflow weir 17 and the outlet pipe, and a connecting channel is provided on the wall of the transition chamber 13, and the first connecting rod 12 is located in the connecting channel, one end of the first connecting rod 12 extends out of the transition chamber 13 and is connected to the output end of the driving device 4, and the other end of the first connecting rod 12 is located in the transition chamber 13 and is connected to the third gate plate 14; when the third gate plate 14 is closed, it is located between the third overflow weir 17 and the outlet pipe, thereby blocking the through hole and realizing the disconnection between the third overflow weir 17 and the outlet pipe.

[0060] The present embodiment provides an implementation method of a transition chamber 13, wherein the transition chamber 13 comprises a first cavity 1301, a sealing plate 1302 and a second cavity 1303, wherein holes of corresponding positions and equal diameters are arranged on the first cavity 1301, the sealing plate 1302 and the second cavity 1303, wherein the second cavity 1303 has a space for accommodating the third gate plate 14 when the third gate plate 14 is opened or closed, wherein the first cavity 1301 and the second cavity 1303 are closed to form the cavity, wherein the sealing plate 1302 is located between the two to form a seal for the cavity, and the sealing plate 1302 can be made of water-resistant material such as foamed silicone and has elastic deformation capability.

[0061] In this embodiment, the output of the driving device 4 is a linear displacement, and the driving device 4 can be an electric cylinder, a pneumatic cylinder or a hydraulic cylinder. When the cylinder rod of the driving device 4 is extended, the third gate plate 14 is inserted downward between the third overflow weir 17 and the outlet pipe to disconnect the third overflow weir 17 from the outlet pipe; when the cylinder rod of the driving device 4 is retracted into the cylinder body, the third gate plate 14 moves upward out of the through hole 16 to connect the third overflow weir 17 with the outlet pipe.

[0062] In this embodiment, the first connecting rod 12 is hinged to the cylinder rod of the driving device 4 to prevent the third gate plate 14 from getting stuck during the up and down movement and being unable to only close or open the connection between the third overflow weir 17 and the water outlet pipe.

[0063] In this embodiment, the transition chamber 13 and the driving device 4 can be installed on the inner wall of the circulating bioreactor 1 by fasteners such as screws. Compared with being installed on the outside of the circulating bioreactor 1, this embodiment can reduce the amount of mixture overflowing into the third overflow weir 17 during backwashing and entering the outlet pipe. By installing on the inner wall of the circulating bioreactor by fasteners such as screws, if a fault occurs, they can be quickly disassembled and repaired without delaying the sewage treatment work.

[0064] The shapes of the first gate plate 3, the second gate plate 9 and the third gate plate 14 in the above-mentioned embodiments 1 to 3 can be square, elliptical, circular or other polygonal shapes, so as to isolate the overflow weir from the outlet pipe, and can be flexibly set according to actual conditions.

[0065] Example 4

[0066] This embodiment provides a circulating bioreactor, comprising the effluent system provided in any one of Embodiments 1 to 3.

[0067] In one embodiment, the loop bioreactor further comprises:

[0068] Backwash pipe 5, valve located on backwash pipe 5, refer to Figure 1 ;

[0069] A controller, wherein the input end of the controller is connected to a backwashing program start button, and the output end of the controller is connected to a control circuit of the drive device and to a control circuit of a valve on the backwashing pipeline 5.

[0070] In one embodiment, one end of the backwashing pipe 5 is connected to a backwashing fluid input assembly, and a valve is provided on the backwashing fluid input assembly. The backwashing method can be air flushing or air-water combined flushing.

[0071] During operation, the backwashing program is turned on, the gate is closed, the valve on the backwashing pipe 5 is opened, and air aeration is performed for a period of time. The aeration time can be adjusted in the range of 0-60min; the backwashing program is turned off, the valve on the backwashing pipe 5 is closed, the mixed liquid is settled for a period of time. The settling time can be adjusted in the range of 0-60min, and the gate is opened.

[0072] In one embodiment, the controller is a PLC controller.

[0073] In one embodiment, the PLC controller can also receive information on whether the opening and closing of the gate plate and the valve on the backwashing pipeline have reached a suitable position and issue an alarm.

[0074] In one embodiment, the duration of the backwash is set to 5 minutes, and the settling time (the time from the closing of the backwash control valve to the opening of the first gate 3) is set to 10 minutes.

[0075] In a specific embodiment, a sedimentation zone filler is provided in the circulating bioreactor 1, and the circulating bioreactor 1 can be suspended and installed in a biochemical reaction tank for sewage treatment to achieve the functions of mixed liquid sedimentation separation and sludge return.

[0076] Furthermore, the gates of the multiple circulating bioreactors 1 and the drive devices connected thereto can be divided into a water outlet device group, and the one water outlet device group can be equipped with only one backwash control valve. The PLC controller can control multiple water outlet device groups. After one water outlet device group completes the cleaning of the filler, another water outlet device group is switched to clean the filler. The cleaning time interval of the multiple water outlet device groups is 0.5-45 hours. If a failure occurs when switching a water outlet device group, another water outlet device group is switched. The time for switching groups for a single group failure is 0-60 minutes.

[0077] In one embodiment, the cleaning time interval of the multiple water outlet device groups is set to 6 hours, and the single group fault switching group time is set to 5 minutes.

[0078] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "circumferential", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0079] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0080] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0081] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0082] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A water outlet system of a circulating bioreactor, comprising an overflow weir arranged in the circulating bioreactor and a water outlet pipe connected to the overflow weir; a backwash pipe is also arranged in the circulating bioreactor, characterized in that: The water outlet system further comprises: a gate plate, arranged between the overflow weir and the water outlet pipe; when the gate plate is closed, the overflow weir and the water outlet pipe are disconnected; when the gate plate is opened, the overflow weir and the water outlet pipe are connected; A driving device, wherein the output end of the driving device is connected to the gate plate, and is used to drive the gate plate to close or open.

2. The water outlet system according to claim 1, characterized in that: The driving device is installed above the overflow weir.

3. The water outlet system according to claim 1, characterized in that: The overflow weir is tubular, and the water outlet system further comprises: A first connecting rod, connecting the gate plate and an output end of the driving device; A transition chamber, wherein a through hole penetrating the transition chamber is provided on the transition chamber, the overflow weir and the water outlet pipe are butted against each other in the through hole, the gate is located in the transition chamber and between the overflow weir and the water outlet pipe, a connecting channel is provided on the cavity wall of the transition chamber, the first connecting rod is located in the connecting channel, one end of the first connecting rod extends out of the transition chamber and is connected to the output end of the driving device, and the other end is located in the transition chamber and is connected to the gate; The gate blocks the through hole when it is closed.

4. The water outlet system according to claim 3, characterized in that: The first connecting rod is hinged to the output end of the driving device.

5. The water outlet system according to claim 3, characterized in that: The transition chamber and the driving device are both installed on the inner wall of the circulating bioreactor.

6. The water outlet system according to claim 1, characterized in that: The overflow weir is in a groove shape, the output of the driving device is a linear displacement, and the water outlet system further comprises: a mounting frame, the driving device being hinged on the mounting frame; A second connecting rod, wherein the first end of the second connecting rod is hinged to the installation frame and the hinge position of the two is lower than the hinge position of the driving device on the installation frame, the second end of the second connecting rod is hinged to the output end of the driving device, and the gate is fixed on the second connecting rod.

7. The water outlet system according to claim 1, characterized in that: The overflow weir is in a groove shape, the output of the driving device is a linear displacement, and the water outlet system further comprises: a mounting frame, the driving device being hinged on the mounting frame; The connecting frame is L-shaped, and the corners of the connecting frame are hinged on the installation frame and the hinge position of the two is lower than the hinge position of the driving device on the installation frame. The first end of the connecting frame is hinged to the output end of the driving device, and the second end of the connecting frame fixes the gate.

8. The water outlet system according to claim 6 or 7, characterized in that: The installation frame is installed on the inner wall of the circulating bioreactor; the gate plate is located on one side of the overflow weir.

9. A loop bioreactor, characterized in that A water outlet system comprising any one of claims 1 to 8.

10. The loop bioreactor according to claim 9, characterized in that: Also includes: A backwashing pipeline and a valve located on the backwashing pipeline; A controller, wherein the input end of the controller is connected to a backwashing program start button, and the output end of the controller is connected to a control circuit of the drive device and to a control circuit of a valve on the backwashing pipeline.

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