Sludge discharge return pipeline system applied to flocculation sedimentation tank

Abstract

The utility model discloses a sludge discharge return pipeline system applied to a flocculation sedimentation tank. The sludge discharge return pipeline system comprises a flocculation zone and a sedimentation zone communicated to the flocculation zone, the settling zone is communicated with a first sludge collecting pipe and a second sludge collecting pipe; the first sludge collecting pipe is connected with a first sludge conveying pipe; the first sludge conveying pipe is connected with a sludge return pipe; the sludge return pipe is communicated to the flocculation zone; the second sludge collecting pipe is connected with a second sludge conveying pipe; the second sludge conveying pipe is connected with a sludge discharge pipe for discharging sludge into an external municipal wet well; the sludge discharge pipe is communicated to a municipal wet well; the first sludge conveying pipe is connected to the second sludge conveying pipe through a communicating pipe; a communicating valve used for controlling conveying of the communicating pipe is arranged on the communicating pipe; the first mud collecting pipe is communicated with the second mud collecting pipe through a mud collecting communicating pipe; and a sludge collection communicating valve is arranged on the sludge collection communicating pipe. The sludge discharge return pipeline system applied to the flocculation sedimentation tank is high in structural stability, and the flocculation effect of returned sludge is better.

Description

Technical Field

[0001] The utility model relates to a sludge discharge return pipeline system applied to a flocculation sedimentation tank. Background Art

[0002] High-efficiency flocculation sedimentation tank refers to a device used in water treatment systems, which is mainly used to remove suspended matter, turbidity and suspended particles in water, thereby improving water quality. This tank usually contains a series of treatment equipment, such as agitators, flocculant dosing systems, sedimentation tanks, etc. The working principle is to add flocculants to cause tiny particles in the water to combine into larger agglomerates, making them easier to settle and eventually removed from the water.

[0003] The sludge in the existing high-efficiency flocculation sedimentation tank is generally discharged through the sludge discharge pipe. However, the sludge discharge system and the sludge return system are set up by two systems, which have low efficiency, single operation function, and poor sludge return flocculation effect. Moreover, the sludge discharge system and the sludge return system are set up in a single row and are independent of each other. In the long-term sludge discharge and transportation process, the bias of the operation function will lead to different load-bearing capacity of the two systems, which will affect the stability of the overall discharge system and high maintenance cost. Utility Model Content

[0004] The utility model provides a sludge discharge return pipeline system applied to a flocculation sedimentation tank to solve the above-mentioned technical problems, and specifically adopts the following technical solutions:

[0005] A sludge discharge return pipeline system used in a flocculation sedimentation tank comprises: a flocculation zone and a sedimentation zone connected to the flocculation zone; the sedimentation zone is connected to a first sludge collecting pipe and a second sludge collecting pipe for respectively outputting sludge in the sedimentation zone; the first sludge collecting pipe is connected to a first sludge delivery pipe; the first sludge delivery pipe is connected to a sludge return pipe for returning sludge to the flocculation zone to continue flocculation; the sludge return pipe is connected to the flocculation zone; the sludge return pipe is provided with a filling pipe for adding flocculant into the sludge return pipe at the inlet of the flocculation zone; the filling pipe is provided with a flocculant control valve for controlling the amount of flocculant added; the first sludge collecting pipe is provided with a first filter for filtering the sludge flowing through the first sludge collecting pipe and a first control valve for controlling the sludge delivery in its conveying direction; the sludge return pipe is provided with a first filter for filtering the sludge flowing through the first sludge collecting pipe and a first control valve for controlling the sludge delivery in sequence; the sludge return pipe is provided with a first filter for filtering the sludge flowing through the first sludge collecting pipe in its conveying direction; the sludge return pipe is provided with a first filter for filtering the sludge flowing through the first sludge collecting pipe in sequence ... The flow pipe is provided with a reflux control valve for controlling sludge transportation; the second sludge collecting pipe is connected to the second sludge delivery pipe; the second sludge delivery pipe is connected to the sludge discharge pipe for discharging sludge to the external municipal wet well; the sludge discharge pipe is connected to the municipal wet well; the second sludge collecting pipe is provided with a second filter for filtering the sludge flowing through the second sludge collecting pipe and a second control valve for controlling sludge transportation in its delivery direction; the sludge discharge pipe is provided with a discharge control valve for controlling sludge discharge; the first sludge delivery pipe is connected to the second sludge delivery pipe through a connecting pipe; the connecting pipe is provided with a connecting valve for controlling the transportation of the connecting pipe; the first sludge collecting pipe and the second sludge collecting pipe are connected by a sludge collecting connecting pipe; the sludge collecting connecting pipe is provided with a sludge collecting connecting valve for controlling the connection between the first sludge collecting pipe and the second sludge collecting pipe.

[0006] Furthermore, the sludge return pipe is provided with a concentration detector between the return control valve and the flocculation zone for detecting the sludge concentration in the sludge return pipe.

[0007] Furthermore, the sludge return pipe is provided with a first flow detector between the concentration detector and the filling pipe for detecting the sludge conveying flow rate in the sludge return pipe.

[0008] Furthermore, the sludge return pipe is provided with a first flow rate control valve between the first flow detector and the filling pipe for controlling the sludge flow rate in the sludge return pipe.

[0009] Furthermore, an emptying pipe for controlling the emptying of flocculant in the filling pipe is provided between the filling pipe and the sludge return pipe; the emptying pipe is provided with an emptying control valve for controlling the emptying of the flocculant.

[0010] Furthermore, the sludge discharge pipe is also provided with a second flow detector for detecting the sludge flow in the sludge discharge pipe.

[0011] Furthermore, a second flow rate control valve for controlling the sludge flow rate in the sludge discharge pipe is provided between the second flow detector and the municipal wet well on the sludge discharge pipe.

[0012] Furthermore, the whole formed by the first mud collecting pipe and the first mud delivery pipe and the whole formed by the second mud collecting pipe and the second mud delivery pipe are respectively arranged on both sides of the sedimentation area and are symmetrically arranged.

[0013] Furthermore, a first mud storage box for caching sludge is provided at the connection between the first mud collecting pipe and the first mud delivery pipe; and a second mud storage box for caching sludge is provided at the connection between the second mud collecting pipe and the second mud delivery pipe.

[0014] Furthermore, a first flow control valve is provided between the first filter and the first mud storage tank; and a second flow control valve is provided between the second filter and the second mud storage tank.

[0015] The utility model is beneficial in that the sludge discharge and return pipeline system provided for the flocculation sedimentation tank is symmetrically distributed, and the discharge pipeline and the return pipeline are connected and controlled, so as to realize the integration of various discharge and return forms. While the overall structure is diversified in function, the use balance of the overall pipeline system is also improved, thereby increasing the service life and reducing the use and maintenance costs.

[0016] In addition, setting a filling pipe in the sludge return pipe to add flocculants can effectively improve the flocculation effect of the returned sludge, strengthen the coagulation effect of the raw water, and further reduce the turbidity and other pollutants in the raw water. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of a sludge discharge return pipeline system applied to a flocculation sedimentation tank of the utility model;

[0019] The sludge discharge return pipeline system 1 applied to the flocculation sedimentation tank includes a flocculation zone 11, a sedimentation zone 12, a first sludge collecting pipe 101, a first sludge delivery pipe 102, a sludge return pipe 103, a filling pipe 104, an emptying pipe 105, an emptying control valve 106, a flocculant control valve 107, a first filter 108, a first control valve 109, a return control valve 110, a concentration detector 111, a first flow detector 112, and a first flow rate control valve 113. 3. The first mud storage tank 114, the first flow control valve 115, the second mud collecting pipe 201, the second mud delivery pipe 202, the sludge discharge pipe 203, the second filter 204, the second control valve 205, the discharge control valve 206, the second flow detector 207, the second flow rate control valve 208, the second mud storage tank 209, the second flow control valve 210, the connecting pipe 301, the connecting valve 302, the mud collecting connecting pipe 401, and the mud collecting connecting valve 402. DETAILED DESCRIPTION

[0020] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0021] like Figure 1 As shown in the figure, a sludge discharge return pipeline system 1 applied to a flocculation sedimentation tank of the present application comprises: a flocculation zone 11 and a sedimentation zone 12 connected to the flocculation zone 11, and the connecting pipe 301 between the flocculation zone 11 and the sedimentation zone 12 is not shown in the figure. The sedimentation zone 12 is connected to a first sludge collecting pipe 101 and a second sludge collecting pipe 201, and the first sludge collecting pipe 101 and the second sludge collecting pipe 201 are respectively used to output the sludge in the sedimentation zone 12. Specifically:

[0022] The first sludge collecting pipe 101 is connected to the first sludge delivery pipe 102, and the first sludge delivery pipe 102 is connected to the sludge return pipe 103 for returning the sludge to the flocculation area 11 to continue the flocculation, and the sludge return pipe 103 is connected to the flocculation area 11. The sludge return pipe 103 is provided with a filling pipe 104 at the inlet of the flocculation area 11, and flocculants can be added into the sludge return pipe 103 through the filling pipe 104, so as to improve the flocculation effect of the returned sludge. The filling pipe 104 is provided with a flocculant control valve 107 for controlling the amount of flocculants added, so as to add an appropriate amount of flocculants according to actual needs. The first sludge collecting pipe 101 is provided with a first filter 108 and a first control valve 109 in its conveying direction in sequence, and the first filter 108 is used to filter the sludge flowing through the first sludge collecting pipe 101. When starting, the sludge conveying is controlled by the first control valve 109. The sludge return pipe 103 is provided with a return control valve 110 for controlling the return transportation of the sludge.

[0023] The second sludge collecting pipe 201 is connected to the second sludge delivery pipe 202, and the second sludge delivery pipe 202 is connected to the sludge discharge pipe 203 for discharging sludge to an external municipal wet well, and the sludge discharge pipe 203 is connected to the municipal wet well. The second sludge collecting pipe 201 is provided with a second filter 204 and a second control valve 205 in its delivery direction, and the second filter 204 is used to filter the sludge flowing through the second sludge collecting pipe 201. When started, the delivery of sludge is controlled by the second control valve 205. The sludge discharge pipe 203 is provided with a discharge control valve 206 for controlling the discharge and delivery of sludge.

[0024] Furthermore, the first mud delivery pipe 102 is connected to the second mud delivery pipe 202 through a connecting pipe 301, and a connecting valve 302 is provided on the connecting pipe 301 for controlling the delivery of the connecting pipe 301. The first mud collecting pipe 101 and the second mud collecting pipe 201 are connected through a mud collecting connecting pipe 401, and a mud collecting connecting valve 402 is provided on the mud collecting connecting pipe 401 for controlling the connection between the first mud collecting pipe 101 and the second mud collecting pipe 201.

[0025] The above structure can realize various working conditions in actual operation, such as:

[0026] The first method is to close the connecting valve 302 and the mud collecting connecting valve 402, so that the pipeline from the first mud collecting pipe 101 to the sludge return pipe 103 and the pipeline from the second mud collecting pipe 201 to the sludge discharge pipe 203 can operate independently of each other, and adjust their respective delivery flow rates according to demand;

[0027] The second method is to open the connecting valve 302, close the mud collecting connecting valve 402, close the return control valve 110, and open the discharge control valve 206, so that the first mud collecting pipe 101 and the second mud collecting pipe 201 can transport the sludge to the sludge discharge pipe 203 to discharge the sludge, and the sludge discharge efficiency is high;

[0028] The third method is to open the connecting valve 302, close the mud collecting connecting valve 402, open the return control valve 110, and close the discharge control valve 206, so that the first mud collecting pipe 101 and the second mud collecting pipe 201 can transport the sludge to the sludge return pipe 103 to perform sludge return, and the sludge return efficiency is high;

[0029] Fourthly, when the amount of sludge is small, the sludge collecting connecting valve 402 can be opened, the first control valve 109 or the second control valve 205 can be closed, and the connecting valve 302 can be closed, and the first sludge conveying pipe 102 or the second sludge conveying pipe 202 can be selected for one-way sludge conveying;

[0030] Fifth, when the amount of sludge is small, the sludge collecting connecting valve 402 can be opened, the first control valve 109 or the second control valve 205 can be closed, the connecting valve 302, the reflux control valve 110 and the discharge control valve 206 can be opened, and the first sludge pipe 102 or the second sludge pipe 202 can be selected for two-way sludge transportation.

[0031] Therefore, the sludge discharge return piping system 1 used in the flocculation sedimentation tank is symmetrically distributed, and the discharge pipeline and the return pipeline are connected and controlled, so as to realize the integration of various discharge and return forms. While the overall structure is diversified in function, the use balance of the overall piping system is also improved, thereby increasing the service life and reducing the use and maintenance costs.

[0032] In addition, a filling pipe 104 is provided in the sludge return pipe 103 to add flocculants, which can effectively improve the flocculation effect of the returned sludge, strengthen the coagulation effect of the raw water, and further reduce the turbidity and other pollutants in the raw water.

[0033] As a specific implementation, the sludge return pipe 103 is provided with a concentration detector 111 between the return control valve 110 and the flocculation zone 11 for detecting the sludge concentration in the sludge return pipe 103 , and the amount of flocculant added to the filling pipe 104 can be determined according to the detected sludge concentration.

[0034] Furthermore, the sludge return pipe 103 is provided with a first flow detector 112 between the concentration detector 111 and the filling pipe 104 for detecting the sludge conveying flow rate in the sludge return pipe 103. The sludge return pipe 103 is provided with a first flow rate control valve 113 between the first flow rate detector 112 and the filling pipe 104. The first flow rate control valve 113 can adjust and control the sludge flow rate in the sludge return pipe 103 according to the detection data of the first flow rate detector 112, and can also determine the amount of flocculant added in the filling pipe 104 according to the detected sludge flow rate.

[0035] As a specific implementation, an emptying pipe 105 is provided between the filling pipe 104 and the sludge return pipe 103. The emptying pipe 105 is provided with an emptying control valve 106 for controlling the emptying of the flocculant. The emptying control valve 106 can be used to control the emptying of the flocculant in the filling pipe 104 according to demand.

[0036] As a specific implementation, the sludge discharge pipe 203 is further provided with a second flow detector 207 for detecting the sludge flow in the sludge discharge pipe 203. The sludge discharge pipe 203 is further provided with a second flow rate control valve 208 between the second flow rate detector 207 and the municipal wet well, and the second flow rate control valve 208 controls the sludge flow rate in the sludge discharge pipe 203 according to the detection data of the second flow rate detector 207.

[0037] The above-mentioned sludge discharge and return pipeline system 1 applied to the flocculation sedimentation tank can accurately control the discharge and return of sludge.

[0038] As a specific implementation method, the first sludge collecting pipe 101 and the first sludge delivery pipe 102 and the second sludge collecting pipe 201 and the second sludge delivery pipe 202 are respectively arranged on both sides of the sedimentation area 12 and are symmetrically arranged, thereby ensuring the symmetrical stability of the overall structure and making the sludge discharge reflux more stable.

[0039] As a specific implementation, a first mud storage box 114 for caching sludge is provided at the connection between the first mud collecting pipe 101 and the first mud delivery pipe 102, and a second mud storage box 209 for caching sludge is provided at the connection between the second mud collecting pipe 201 and the second mud delivery pipe 202. A first flow control valve 115 is provided between the first filter 108 and the first mud storage box 114, and a second flow control valve 210 is provided between the second filter 204 and the second mud storage box 209. In this way, the overall sludge discharge pipe 203 and the sludge return pipe 103 can be effectively buffered.

[0040] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the above embodiments do not limit the utility model in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the utility model.

Claims

1. A sludge discharge return pipeline system used in a flocculation sedimentation tank, include: A flocculation zone and a sedimentation zone connected to the flocculation zone; characterized in that: The sedimentation area is connected to a first sludge collecting pipe and a second sludge collecting pipe for respectively outputting the sludge in the sedimentation area; The first mud collecting pipe is connected to a first mud conveying pipe; The first sludge delivery pipe is connected to a sludge return pipe for returning the sludge to the flocculation zone to continue the flocculation action; The sludge return pipe is connected to the flocculation zone; The sludge return pipe is provided with a filling pipe for adding flocculant into the sludge return pipe at the inlet of the flocculation zone; The filling pipe is provided with a flocculant control valve for controlling the amount of flocculant added; The first sludge collecting pipe is provided with a first filter for filtering the sludge flowing through the first sludge collecting pipe and a first control valve for controlling the sludge conveying in sequence in its conveying direction; The sludge return pipe is provided with a return control valve for controlling sludge transportation; The second mud collecting pipe is connected to a second mud conveying pipe; The second sludge delivery pipe is connected to a sludge discharge pipe for discharging sludge into an external municipal wet well; The sludge discharge pipe is connected to the municipal wet well; The second sludge collecting pipe is provided with a second filter for filtering the sludge flowing through the second sludge collecting pipe and a second control valve for controlling the sludge conveying in sequence in its conveying direction; The sludge discharge pipe is provided with a discharge control valve for controlling the discharge of sludge; The first mud delivery pipe is connected to the second mud delivery pipe through a connecting pipe; The connecting pipe is provided with a connecting valve for controlling the delivery of the connecting pipe; The first mud collecting pipe and the second mud collecting pipe are connected to each other through a mud collecting connecting pipe; The mud collecting connecting pipe is provided with a mud collecting connecting valve for controlling the connection between the first mud collecting pipe and the second mud collecting pipe.

2. The sludge discharge return pipeline system for flocculation sedimentation tank according to claim 1, It is characterized in that The sludge return pipe is provided with a concentration detector between the return control valve and the flocculation zone for detecting the sludge concentration in the sludge return pipe.

3. The sludge discharge return pipeline system applied to the flocculation sedimentation tank according to claim 2, It is characterized in that The sludge return pipe is provided with a first flow detector between the concentration detector and the filling pipe for detecting the sludge conveying flow rate in the sludge return pipe.

4. The sludge discharge return pipeline system for flocculation sedimentation tank according to claim 3, It is characterized in that The sludge return pipe is provided with a first flow rate control valve between the first flow detector and the filling pipe for controlling the sludge flow rate in the sludge return pipe.

5. The sludge discharge return pipeline system for flocculation sedimentation tank according to claim 1, It is characterized in that An emptying pipe for controlling the emptying of the flocculant in the filling pipe is provided between the filling pipe and the sludge return pipe; The emptying pipe is provided with an emptying control valve for controlling the emptying of the flocculant.

6. The sludge discharge return pipeline system for flocculation sedimentation tank according to claim 1, It is characterized in that The sludge discharge pipe is also provided with a second flow detector for detecting the sludge flow in the sludge discharge pipe.

7. The sludge discharge return pipeline system for flocculation sedimentation tank according to claim 6, It is characterized in that A second flow rate control valve for controlling the sludge flow rate in the sludge discharge pipe is also provided on the sludge discharge pipe between the second flow detector and the municipal wet well.

8. The sludge discharge return pipeline system for flocculation sedimentation tank according to claim 1, It is characterized in that The first mud collecting pipe and the first mud delivery pipe as a whole and the second mud collecting pipe and the second mud delivery pipe as a whole are respectively arranged on both sides of the sedimentation area and are symmetrically arranged.

9. The sludge discharge return pipeline system for flocculation sedimentation tank according to claim 1, It is characterized in that A first mud storage box for caching sludge is provided at the connection between the first mud collecting pipe and the first mud conveying pipe; A second mud storage box for buffering sludge is provided at the connection between the second mud collecting pipe and the second mud conveying pipe.

10. The sludge discharge return pipeline system used in a flocculation sedimentation tank according to claim 9, It is characterized in that A first flow control valve is provided between the first filter and the first mud storage tank; A second flow control valve is provided between the second filter and the second mud storage tank.

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