Leachate treatment system

Abstract

The utility model provides a leachate treatment system, which belongs to the technical field of leachate treatment and comprises a reaction tank group, an adjusting tank, a conveying pipe, a sludge discharge main pipe and a connecting pipe, a material conveying pipe for conveying materials into the reaction tank group is also arranged between the adjusting tank and the reaction tank group; the reaction tank group comprises a plurality of anaerobic tanks, and the lower ends of the plurality of anaerobic tanks are connected with a sludge discharge main pipe by virtue of sludge discharge branch pipes; the sludge discharge main pipe is communicated with the adjusting tank through a connecting pipe. According to the leachate treatment system provided by the utility model, self-flow adjustment and reshipment among the plurality of anaerobic jars are realized through liquid level difference; the reverse intercommunication of the anaerobic jar and the adjusting tank can be realized through the sludge discharge main pipe and the connecting pipe; by means of the improvement of the sludge discharge main pipe, intercommunication between the anaerobic jars and between the anaerobic jars and the adjusting tank is achieved, the percolate storage amount in the outage state is increased, the buffer time of the system is prolonged, the operation efficiency of the system is improved, and stable operation of the system is reliably guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of leachate treatment, and more specifically, relates to a leachate treatment system. Background Art

[0002] Generally, multiple anaerobic tanks are built in a leachate treatment system. The anaerobic tanks serve as reaction tanks for the reaction of leachate. A regulating tank is arranged upstream of the anaerobic tanks. The regulating tank serves as a storage device for leachate and stores the leachate during shutdown to provide a buffer time for the reaction system of the anaerobic tanks. However, due to the limited volume of the regulating tank, the leachate treatment system has less buffer time, the system is in a long-term operation state, the system operation efficiency is low, and the safety and environmental protection risks are relatively high. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a leachate treatment system, aiming to solve the problems of less buffer time and low operation efficiency of the leachate treatment system.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: to provide a leachate treatment system, including a reaction tank group, a regulating tank, a feeding pipe, a main sludge discharge pipe and a connecting pipe; a feeding pipe for feeding materials into the reaction tank group is further arranged between the regulating tank and the reaction tank group; the reaction tank group includes multiple anaerobic tanks, and the lower ends of the multiple anaerobic tanks are all connected to the main sludge discharge pipe by means of sludge discharge branch pipes; the main sludge discharge pipe and the regulating tank are communicated by means of the connecting pipe.

[0005] As another embodiment of the present application, the outlet end of the feeding pipe is communicated with the main sludge discharge pipe.

[0006] As another embodiment of the present application, a diversion pipe is arranged in the middle of the anaerobic tank, and the other end of the diversion pipe is communicated with the main sludge discharge pipe or the sludge discharge branch pipe of the corresponding anaerobic tank.

[0007] As another embodiment of the present application, the diversion pipe includes a bidirectional pipe section and a unidirectional pipe section which are sequentially communicated, and the bidirectional pipe section is communicated with the anaerobic tank; the outlet end of the feeding pipe is communicated with the bidirectional pipe section of any one of the anaerobic tanks.

[0008] As another embodiment of the present application, a plurality of liquid outlet pipes are arranged at the outlet end of the feeding pipe, and the plurality of liquid outlet pipes correspond to the plurality of anaerobic tanks one by one and are communicated with the bidirectional pipe section of the corresponding anaerobic tank.

[0009] As another embodiment of the present application, two adjacent anaerobic tanks are communicated by means of a flow equalizing pipe, and the flow equalizing pipe is connected to the lower part of the anaerobic tank; the middle part of the flow equalizing pipe is connected with an extension pipe by means of a three-way valve, and the extension pipe is communicated with the main sludge discharge pipe or the sludge discharge branch pipe of the corresponding anaerobic tank.

[0010] As another embodiment of the present application, there are multiple regulating ponds, and all of the multiple regulating ponds are communicated with the main sludge discharge pipe through the connecting pipe.

[0011] As another embodiment of the present application, the regulating pond includes a main pond body and an auxiliary pond body, and the main pond body is communicated with the auxiliary pond body; the feeding pipe is communicated with the main pond body; the connecting pipe is communicated with the auxiliary pond body.

[0012] The beneficial effects of the leachate treatment system provided by the present utility model are as follows: compared with the prior art, in the leachate treatment system of the present utility model, when the system is out of service, both the regulating pond and the reaction tank group are used as storage tanks; when the system is out of service, the leachate in the regulating pond is conveyed into any anaerobic tank through the feeding pipe; since multiple anaerobic tanks are all connected to the main sludge discharge pipe through the sludge discharge branch pipes, self-flow regulation and transfer are realized among the multiple anaerobic tanks through the liquid level difference; reverse intercommunication between the anaerobic tank and the regulating pond can also be realized through the main sludge discharge pipe and the connecting pipe; through the improvement of the main sludge discharge pipe, intercommunication among anaerobic tanks and between the anaerobic tank and the regulating pond is realized, the leachate storage capacity in the out-of-service state is increased, the buffering time of the system is increased, the operation efficiency of the system is improved, and the stable operation of the system is reliably guaranteed. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 It is a schematic structural diagram of the leachate treatment system provided by the first embodiment of the present utility model;

[0015] Figure 2 It is a schematic structural diagram of the leachate treatment system provided by the second embodiment of the present utility model;

[0016] Figure 3 It is a schematic structural diagram of the leachate treatment system provided by the third embodiment of the present utility model.

[0017] In the figure: 1, anaerobic tank; 2, regulating pond; 3, sludge tank; 4, feed pump; 5, submersible sewage pump; 6, connecting pipe; 7, feeding pipe; 8, sludge discharge branch pipe; 9, diversion pipe; 10, flow equalizing pipe; 11, extension pipe; 12, main pond body; 13, auxiliary pond body; 14, main sludge discharge pipe. Detailed Embodiments

[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0019] Please refer to Figures 1 to 3 , and now the leachate treatment system provided by the present utility model will be described. The leachate treatment system includes a reaction tank group, an adjustment tank 2, a feed pipe 7, a main sludge discharge pipe 14 and a connecting pipe 6; a feed pipe 7 for feeding materials into the reaction tank group is further provided between the adjustment tank 2 and the reaction tank group; the reaction tank group includes a plurality of anaerobic tanks 1, and the lower ends of the plurality of anaerobic tanks 1 are all connected to the main sludge discharge pipe 14 by means of sludge discharge branch pipes 8; the main sludge discharge pipe 14 and the adjustment tank 2 are communicated by means of a connecting pipe 6.

[0020] Compared with the prior art, for the leachate treatment system provided by the present utility model, when the system is out of service, both the adjustment tank 2 and the reaction tank group are used as storage tanks; when the system is out of service, the leachate in the adjustment tank 2 is transported to any one of the anaerobic tanks 1 through the feed pipe 7; since the plurality of anaerobic tanks 1 are all connected to the main sludge discharge pipe 14 by means of sludge discharge branch pipes 8, self-flow adjustment and reverse transportation are realized among the plurality of anaerobic tanks 1 through the liquid level difference; the reverse intercommunication between the anaerobic tanks 1 and the adjustment tank 2 can also be realized through the main sludge discharge pipe 14 and the connecting pipe 6; the intercommunication between the anaerobic tanks 1 and between the anaerobic tanks 1 and the adjustment tank 2 is realized by means of the improvement of the main sludge discharge pipe 14, the leachate storage capacity in the out-of-service state is increased, the buffer time of the system is increased, the operation efficiency of the system is improved, and the stable operation of the system is reliably guaranteed.

[0021] Optionally, a submersible sewage pump 5 is provided on the main sludge discharge pipe 14, and the terminal of the main sludge discharge pipe 14 is connected to a sludge tank 3. The connecting pipe 6 is located in the downstream section of the submersible sewage pump 5, and the end of the connecting pipe 6 is connected to the main sludge discharge pipe 14 by means of a three-way valve or a three-way fitting; a stop valve is provided on the connecting pipe 6.

[0022] In some possible embodiments, please refer to Figure 1 , the outlet end of the feed pipe 7 is communicated with the main sludge discharge pipe 14. The starting end of the feed pipe 7 is communicated inside the adjustment tank 2 or in the middle of the connecting pipe 6, and the terminal of the feed pipe 7 is communicated with the main sludge discharge pipe 14 in the upstream section of the submersible sewage pump 5; a feed pump 4 is provided on the feed pipe 7, and the conveying direction of the feed pump 4 is opposite to the conveying direction of the submersible sewage pump 5. Specifically, the feed pipe 7 is connected to the main sludge discharge pipe 14 by means of a three-way valve or a three-way fitting, and a stop valve is provided on the feed pipe 7.

[0023] The main sludge discharge pipe 14 changes the conveying direction of the leachate by switching to connect the material conveying pipe 7 and the connecting pipe 6. When the main sludge discharge pipe 14 is connected to the material conveying pipe 7, the leachate in the regulating tank 2 sequentially enters the anaerobic tank 1 through the material conveying pipe 7, the main sludge discharge pipe 14, and the sludge discharge branch pipe 8. When the main sludge discharge pipe 14 is connected to the connecting pipe 6, the leachate in the anaerobic tank 1 sequentially enters the regulating tank 2 through the sludge discharge branch pipe 8, the main sludge discharge pipe 14, and the connecting pipe 6, realizing the intercommunication between the regulating tank 2 and the anaerobic tank 1. After the leachate is conveyed into the anaerobic tank 1, to equalize the liquid level in the anaerobic tank 1, the connecting pipe 6 and the material conveying pipe 7 can be closed, and the sludge discharge branch pipes 8 of two or more anaerobic tanks 1 can be opened; at this time, the above-mentioned anaerobic tanks 1 are in a communicating state through the sludge discharge branch pipes 8 and the main sludge discharge pipe 14, and the liquid level height difference existing between the anaerobic tanks 1 is used as the driving force to make the leachate enter another anaerobic tank 1 through the sludge discharge branch pipes 8 and the main sludge discharge pipe 14 to balance the pressure difference between the anaerobic tanks 1. Or when it is necessary to transfer between the anaerobic tanks 1, first transfer the leachate in the anaerobic tank 1 with a higher liquid level to the regulating tank 2, and then transfer it from the regulating tank 2 to another anaerobic tank 1. The material conveying pipe 7 and the connecting pipe 6 share a main sludge discharge pipe 14, so the conveying pipe and the connecting pipe 6 need to be switched for use.

[0024] In some possible embodiments, please refer to Figure 2 , a diversion pipe 9 is provided in the middle of the anaerobic tank 1, and the other end of the diversion pipe 9 is connected to the main sludge discharge pipe 14 or the sludge discharge branch pipe 8 of the corresponding anaerobic tank 1.

[0025] When the diversion pipe 9 connects the middle of the same anaerobic tank 1 and the sludge discharge branch pipe 8, when the sludge discharge branch pipe 8 is blocked, the diversion pipe 9 is opened, and the leachate in the anaerobic tank 1 is discharged from the diversion pipe 9 and conveyed to the outlet end of the sludge discharge branch pipe 8 to backwash the sludge discharge branch pipe 8 in the reverse direction. A valve is provided between the sludge discharge branch pipe 8 and the main sludge discharge pipe 14, and the end of the diversion pipe 9 is connected to the end of the sludge discharge branch pipe 8 close to the main sludge discharge pipe 14.

[0026] When the diversion pipe 9 connects the anaerobic tank 1 and the main sludge discharge pipe 14, the backwashing of the sludge discharge branch pipe 8 of the same anaerobic tank 1 or the backwashing of the sludge discharge branch pipes 8 of different anaerobic tanks 1 can be realized by adjusting the valves between the sludge discharge branch pipes 8 and the main sludge discharge pipe 14.

[0027] The diversion pipe 9 includes a bidirectional pipe section and a unidirectional pipe section that are sequentially connected, and the bidirectional pipe section is connected to the anaerobic tank 1; the outlet end of the material conveying pipe 7 is connected to the bidirectional pipe section of any anaerobic tank 1.

[0028] The bidirectional pipe section is arranged horizontally, and the unidirectional pipe section is arranged vertically; the bidirectional pipe section and the unidirectional pipe section are connected by means of an elbow, or the bidirectional pipe section is connected to the material conveying pipe 7 and the unidirectional pipe section by means of a tee.

[0029] When the two-way pipe section and the one-way pipe section are connected by an elbow, the feed pipe 7 is connected to the two-way pipe section, and the leachate in the feed pipe 7 enters the two-way pipe section and then enters the anaerobic tank 1 through the two-way pipe section.

[0030] When the two-way pipe section of one anaerobic tank 1 among multiple anaerobic tanks 1 is connected to the feed pipe 7 and the one-way pipe section by means of a tee, the leachate in the feed pipe 7 enters the two-way pipe section or enters the one-way pipe section. After the leachate enters the two-way pipe section, it can enter the anaerobic tank 1; after the leachate enters the one-way pipe section, it can be used as a backwash liquid to repeat the above process of backwashing the sludge discharge branch pipe 8 with the leachate in the diversion pipe 9.

[0031] The outlet end of the feed pipe 7 is provided with a plurality of liquid outlet pipes, and the plurality of liquid outlet pipes correspond to the plurality of anaerobic tanks 1 one by one and are connected to the two-way pipe section of the corresponding anaerobic tank 1. That is, the two-way pipe sections of the multiple anaerobic tanks 1 are all arranged to be connected to the feed pipe 7 and the one-way pipe section by means of a tee, and the diversion pipe 9 of each anaerobic tank 1 can be connected to the feed pipe 7.

[0032] In some possible embodiments, please refer to Figure 3 , two adjacent anaerobic tanks 1 are connected by a flow equalizing pipe 10, and the flow equalizing pipe 10 is connected to the lower part of the anaerobic tank 1; the middle part of the flow equalizing pipe 10 is connected with an extension pipe 11 by means of a three-way valve, and the extension pipe 11 is connected to the sludge discharge main pipe 14 or the sludge discharge branch pipe 8 of the corresponding anaerobic tank 1.

[0033] The flow equalizing pipe 10 connecting the lower parts of the two anaerobic tanks 1 can achieve self-flow adjustment between the anaerobic tanks 1 on the basis of not affecting the input of leachate into the anaerobic tank 1 by the sludge discharge main pipe 14 using the sludge discharge branch pipe 8.

[0034] An extension pipe 11 is arranged in the middle of the flow equalizing pipe 10, and the extension pipe 11 realizes auxiliary self-flow by connecting to the sludge discharge main pipe 14 or the sludge discharge branch pipe 8. Specifically, when the flow equalizing pipe 10 or the sludge discharge branch pipe 8 is blocked, the extension pipe 11 can play a temporary connection role.

[0035] In addition, a connection pump can be added to the extension pipe 11, and the connection pump is used to drive the leachate in the extension pipe 11 to backwash the sludge discharge branch pipe 8.

[0036] In some possible embodiments, please refer to Figure 2 , there are multiple regulating ponds 2, and the multiple regulating ponds 2 are all connected to the sludge discharge main pipe 14 by means of connecting pipes 6.

[0037] When the multiple regulating ponds 2 are arranged in parallel, each regulating pond 2 is connected with a conveying pipe and a connecting pipe 6, and the connecting pipes 6 are all connected to the sludge discharge main pipe 14. The conveying pipe includes a main pipe and branch pipes, and each regulating pond 2 is connected with a branch pipe, and then the multiple branch pipes are simultaneously connected to the main pipe.

[0038] In some possible embodiments, please refer to Figure 3, the regulating tank 2 includes a main tank body 12 and an auxiliary tank body 13, and the main tank body 12 is communicated with the auxiliary tank body 13; the feeding pipe 7 is communicated with the main tank body 12; the connecting pipe 6 is communicated with the auxiliary tank body 13.

[0039] The main tank body 12 and the auxiliary tank body 13 are opened and closed through a partition door. When the main tank body 12 is storing, the auxiliary tank body 13 can be used as a temporary storage container for transfer. When the leachate in the main tank body 12 is transported to the anaerobic tank 1, the leachate in the anaerobic tank 1 can be transported back to the auxiliary tank body 13 through the main sludge discharge pipe 14, and then mixed through the partition door between the auxiliary tank body 13 and the main tank body 12. The auxiliary tank body 13 can reduce the problem of large liquid fluctuations when the main tank body 12 has both inflow and outflow at the same time.

[0040] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A leachate treatment system, characterized in that: The invention comprises a reaction tank group, a regulating tank (2), a material delivery pipe (7), a mud discharge main pipe (14) and a connecting pipe (6); a material delivery pipe (7) for delivering material into the reaction tank group is also provided between the regulating tank (2) and the reaction tank group; the reaction tank group comprises a plurality of anaerobic tanks (1), the lower ends of the plurality of anaerobic tanks (1) are connected to the mud discharge main pipe (14) by means of mud discharge branch pipes (8); the mud discharge main pipe (14) is connected to the regulating tank (2) by means of the connecting pipe (6).

2. The leachate treatment system according to claim 1, characterized in that: The outlet end of the material conveying pipe (7) is connected to the mud discharge main pipe (14).

3. The leachate treatment system according to claim 1, characterized in that: A flow guide pipe (9) is provided in the middle of the anaerobic tank (1), and the other end of the flow guide pipe (9) is connected to the sludge discharge main pipe (14) or the corresponding sludge discharge branch pipe (8) of the anaerobic tank (1).

4. The leachate treatment system according to claim 3, characterized in that: The flow guide pipe (9) comprises a bidirectional pipe section and a unidirectional pipe section which are connected in sequence, and the bidirectional pipe section is connected to the anaerobic tank (1); the outlet end of the feed delivery pipe (7) is connected to the bidirectional pipe section of any one of the anaerobic tanks (1).

5. The leachate treatment system according to claim 4, characterized in that: The outlet end of the feed delivery pipe (7) is provided with a plurality of liquid outlet pipes, and the plurality of liquid outlet pipes correspond one-to-one to the plurality of anaerobic tanks (1) and are connected to the bidirectional pipe sections of the corresponding anaerobic tanks (1).

6. The leachate treatment system according to claim 1, characterized in that: Two adjacent anaerobic tanks (1) are connected by means of a flow equalizer pipe (10), and the flow equalizer pipe (10) is connected to the lower part of the anaerobic tank (1); the middle part of the flow equalizer pipe (10) is connected to an extension pipe (11) by means of a three-way valve, and the extension pipe (11) is connected to the sludge discharge main pipe (14) or the sludge discharge branch pipe (8) of the corresponding anaerobic tank (1).

7. The leachate treatment system according to claim 1, characterized in that: There are multiple regulating tanks (2), and each of the multiple regulating tanks (2) is connected to the mud discharge main pipe (14) via the connecting pipe (6).

8. The leachate treatment system according to claim 1, characterized in that: The regulating tank (2) comprises a main tank body (12) and an auxiliary tank body (13), wherein the main tank body (12) and the auxiliary tank body (13) are connected; the feed pipe (7) is connected to the main tank body (12); and the connecting pipe (6) is connected to the auxiliary tank body (13).

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