MBBR (Moving Bed Biofilm Reactor) effluent filler intercepting device

Abstract

The utility model discloses an MBBR (Moving Bed Biofilm Reactor) effluent filler intercepting device, which relates to the technical field of sewage treatment and comprises an intercepting net with a cylindrical structure, meshes are arranged on the intercepting net, an aeration pipe is connected in the intercepting net, a connecting seat for fixing the aeration pipe is arranged at a port of the intercepting net, and an electromagnetic valve for controlling aeration is arranged on the aeration pipe. A flow meter used for detecting the flow in the intercepting net is further fixedly arranged on the connecting base, and the flow meter is connected with the electromagnetic valve through a controller. According to the utility model, the aeration pipe is arranged in the interception net with the cylindrical structure, and when the flow in the interception net is detected to be reduced or reach a set aeration time node, aeration can be instantly released into the interception net for one or more times, so that the pressure in the interception net is instantly increased, the filler accumulated on the outer side of the interception net is dispersed, and the filler is separated from the interception net; the problem of blockage caused by packing accumulation is avoided, the accumulated packing enters the biochemical system again to flow, and the sewage treatment capacity of the packing in the biochemical system is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and in particular relates to an MBBR effluent filler intercepting device. Background Art

[0002] A filter screen to intercept fillers will be set at the outlet of the moving bed biofilm reactor (MBBR). Conventional filters are mostly straight filters or barrel filters. No matter which filter screen is used, fillers are likely to accumulate on the screen during the water outlet process. The gradually accumulated fillers will cause the filter screen to be blocked and reduce the water outlet. On the other hand, the accumulated fillers cannot flow in the biochemical system, which will reduce the biochemical system's ability to treat sewage. Utility Model Content

[0003] The utility model aims to solve the disadvantage of the prior art that fillers are accumulated on the screen, and proposes an MBBR effluent filler interception device. The MBBR effluent filler interception device can avoid the blockage problem caused by the accumulation of fillers.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An MBBR effluent filler interception device is designed, comprising an interception net of a cylindrical structure, wherein the interception net is provided with mesh holes, an aeration pipe is connected to the interception net, a connection seat for fixing the aeration pipe is provided at a port of the interception net, an electromagnetic valve for controlling aeration is provided on the aeration pipe, a flow meter for detecting the internal flow of the interception net is also fixed on the connection seat, the flow meter is connected to the electromagnetic valve through a controller, and the aeration pipe performs intermittent aeration on the interior of the interception net through a time node or a flow threshold set by the electromagnetic valve.

[0006] Furthermore, the aeration pipe opening of the aeration pipe is located on one side of the port of the interception net and is coaxially arranged with the interception net.

[0007] Furthermore, a rolling bearing is provided between the connecting seat and the intercepting net, the inner ring of the rolling bearing is fixedly connected to the connecting seat, and the outer ring is fixedly connected to the port of the intercepting net.

[0008] Furthermore, a plurality of spiral blades are fixedly provided on the circumference of the inner wall of the interception net.

[0009] Furthermore, a scraper is provided on the outer side of the interception net, and one end of the scraper is fixedly arranged on the connecting seat.

[0010] The utility model proposes an MBBR effluent filler interception device, which has the beneficial effects of: the utility model can avoid the blockage problem caused by filler accumulation, so that the accumulated filler can re-enter the biochemical system to flow, and improve the filler's ability to treat sewage in the biochemical system. Specifically:

[0011] (1) The utility model provides an aeration pipe in a cylindrical interception net. When fillers are accumulated outside the interception net and blockage occurs, the flow meter detects that the flow rate inside the interception net is reduced. When the flow rate is lower than a set threshold or reaches a set aeration time node, the aeration pipe releases one or more aerations into the interception net, thereby increasing the pressure inside the interception net instantly, thereby dispersing the fillers accumulated outside the interception net and allowing the fillers to detach from the interception net, thereby avoiding blockage caused by the accumulation of fillers.

[0012] (2) The utility model provides a rotatable interception net. During aeration, the interception net rotates under the impact of aeration. The interception net after rotation can distribute aeration more evenly on the interception net. In addition, under the action of centrifugal force, the filler attached to the interception net is detached, which can assist aeration in removing the filler accumulated on the outside of the interception net. At the same time, the interception net after rotation can further remove the filler remaining on the outside of the interception net under the action of the scraper, so that the filler accumulated on the outside of the interception net can be removed more thoroughly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a schematic diagram of the internal structure of the utility model in Example 1;

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure of the interception net in Example 1;

[0016] Figure 3 It is a schematic diagram of the internal structure of the utility model in Example 2;

[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the interception net in Example 2;

[0018] Figure 5 It is a schematic diagram of the internal structure of the interception network in Example 2;

[0019] Figure 6 This is a schematic diagram of the internal structure of the utility model in Example 3

[0020] The markings in the figure are: 1. Interception net; 2. Aeration pipe; 3. Connecting seat; 4. Solenoid valve; 5. Flow meter; 6. Rolling bearing; 7. Spiral blade; 8. Scraper. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "top / bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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.

[0023] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] The structural features of the utility model are now described in detail with reference to the accompanying drawings of the specification.

[0025] Example 1

[0026] See also Figure 1-Figure 2, an MBBR effluent filler interception device comprises an interception net 1, which is a cylindrical structure made of stainless steel. The interception net 1 is provided with dense mesh holes for intercepting fillers in a biochemical system. An aeration pipe 2 is connected inside the interception net 1, and a connecting seat 3 for fixing the aeration pipe 2 is provided at the port of the interception net 1. Flanges are provided at both ends of the connecting seat 3. The flange on one side is used to connect the interception net 1, and the flange on the other end is used for fixing and is connected to the water inlet pipe of the outlet pump. An electromagnetic valve 4 for controlling aeration is provided on the aeration pipe 2. In order to allow the aeration of the aeration pipe 2 to impact the entire interception net 1, during installation, the aeration pipe port of the aeration pipe 2 needs to be located on one side of the port of the interception net 1 and be coaxially arranged with the interception net 1. During aeration, the airflow instantly gushes out from the port of the aeration pipe 2, which can instantly increase the internal pressure of the interception net 1. The strong airflow will impact the mesh holes of the interception net 1, and disperse the fillers accumulated on the outside of the interception net 1. The aeration pipe 2 performs intermittent aeration on the inside of the interception net 1 through the time node or flow threshold set by the electromagnetic valve 4.

[0027] In order to realize automatic control of aeration, a flow meter 5 for detecting the internal flow of the interception net 1 is fixedly provided on the connecting seat 3. The flow meter 5 is connected to the electromagnetic valve 4 through the controller. The flow meter 5 can detect the flow change in the interception net 1 in real time. When the interception net 1 is blocked, the internal flow of the interception net 1 will be reduced. When the flow is lower than the set threshold, the controller controls the electromagnetic valve 4 for aeration. The controller adopts a programmable PLC and can adjust the threshold of the detection flow.

[0028] The MBBR effluent filler intercepting device of the utility model can avoid the blockage problem caused by the accumulation of fillers. Specifically, when in use, an aeration pipe 2 is arranged in the intercepting net 1 of the cylindrical structure. When fillers are accumulated on the outside of the intercepting net 1 and blockage occurs, and the flow meter 5 detects that the internal flow of the intercepting net 1 is lower than the set threshold value, or when the set aeration time node is reached, one or more aerations are released into the intercepting net 1 through the aeration pipe 2, so that the pressure in the intercepting net 1 is increased instantly, thereby dispersing the fillers accumulated on the outside of the intercepting net 1, making the fillers detach from the intercepting net, avoiding the blockage problem caused by the accumulation of fillers, and making the accumulated fillers re-enter the biochemical system to flow, thereby improving the filler's ability to treat sewage in the biochemical system.

[0029] Example 2

[0030] Reference Figure 3-Figure 5As another preferred embodiment of the utility model, the difference from embodiment 1 is that a rolling bearing 6 is provided between the connecting seat 3 and the interception net 1, the inner ring of the rolling bearing 6 is fixedly connected to the connecting seat 3, and the outer ring is fixedly connected to the port of the interception net 1. The setting of the rolling bearing 6 can make the interception net 1 rotate when it is impacted by external force. While the aeration pipe 2 is aerating, the interception net 1 is rotated under the impact of aeration. The interception net 1 after rotation can make the aeration more evenly distributed on the interception net 1. In addition, under the action of centrifugal force, the filler attached to the interception net is separated, and the filler accumulated on the outside of the interception net 1 can be assisted by aeration to remove the filler, so that the filler accumulated on the outside of the interception net 1 can be removed more thoroughly. In order to increase the rotation speed of the interception net 1 when it is impacted by aeration, a plurality of spiral blades 7 are fixedly provided on the inner wall circumference of the interception net 1. When the aeration pipe 2 aerates the interception net 1, the aeration airflow impacts the spiral blades 7. Driven by the spiral blades 7, the interception net 1 can rotate rapidly, thereby increasing the centrifugal force of the external filler and making the filler separate from the interception net 1.

[0031] Example 3

[0032] Reference Figure 6 As another preferred embodiment of the utility model, the difference from embodiment 1 is that a scraper 8 is provided on the outside of the interception net 1, and one end of the scraper 8 is fixedly arranged on the connecting seat 3. The interception net 1 after rotation can further remove the filler remaining on the outside of the interception net 1 under the action of the scraper 8.

[0033] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An MBBR effluent filler interception device, comprising an interception net (1) of a cylindrical structure, wherein the interception net (1) is provided with mesh holes, and is characterized in that: An aeration pipe (2) is connected to the interception net (1), a connection seat (3) for fixing the aeration pipe (2) is provided at a port of the interception net (1), and an electromagnetic valve (4) for controlling aeration is provided on the aeration pipe (2); A flow meter (5) for detecting the internal flow of the interception net (1) is also fixedly provided on the connection seat (3); the flow meter (5) is connected to the electromagnetic valve (4) via a controller; The aeration pipe (2) performs intermittent aeration on the interior of the interception net (1) through a time node or a flow threshold value set by the electromagnetic valve (4).

2. The MBBR effluent filler interception device according to claim 1, characterized in that: The aeration pipe opening of the aeration pipe (2) is located on one side of the port of the interception net (1) and is coaxially arranged with the interception net (1).

3. The MBBR effluent filler interception device according to claim 2, characterized in that: A rolling bearing (6) is provided between the connecting seat (3) and the intercepting net (1); the inner ring of the rolling bearing (6) is fixedly connected to the connecting seat (3), and the outer ring is fixedly connected to the port of the intercepting net (1).

4. The MBBR effluent filler interception device according to claim 3, characterized in that: A plurality of spiral blades (7) are fixedly provided on the circumference of the inner wall of the interception net (1).

5. The MBBR effluent filler interception device according to claim 4, characterized in that: A scraper (8) is provided on the outer side of the interception net (1), and one end of the scraper (8) is fixedly arranged on the connecting seat (3).

Images