Sulfur autotrophic denitrification nitrogen removal device for treating landfill leachate

Abstract

The utility model discloses a sulfur autotrophic denitrification nitrogen removal device for treating landfill leachate, which comprises a reaction tank, a plurality of reactors are arranged in the reaction tank, the plurality of reactors are connected in series, a liquid inlet pipe is arranged at the top of one side of each reactor, connecting pipes are arranged among the plurality of reactors, and the liquid inlet pipe is communicated with the liquid inlet pipe. The liquid inlet pipe is used for entering of landfill leachate, a stirring device is arranged in the reactor, a sulfur source feeding device is arranged at the top of the reactor, and a liquid outlet pipe is arranged at the bottom of one side of the reactor. The landfill leachate treatment device is convenient for improving the treatment efficiency of landfill leachate.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a sulfur autotrophic denitrification and denitrification device for treating garbage leachate. Background Art

[0002] At present, landfill leachate treatment is an important part of environmental protection. Traditional landfill leachate treatment methods include physical, chemical and biological treatment, among which biological treatment methods have attracted widespread attention due to their economy and sustainability. Sulfur autotrophic denitrification, as a new denitrification technology, has the advantages of no need for organic carbon source and low sludge production, and has gradually become a research hotspot.

[0003] Traditional sulfur autotrophic denitrification devices often face technical bottlenecks such as slow reaction rate, unstable treatment effect, and waste of sulfur source when treating landfill leachate. Utility Model Content

[0004] The present application provides a sulfur autotrophic denitrification and denitrification device for treating landfill leachate, which is convenient for improving the treatment efficiency of landfill leachate.

[0005] The present application provides a sulfur autotrophic denitrification and denitrification device for treating landfill leachate, which adopts the following technical solution:

[0006] A sulfur autotrophic denitrification and denitrification device for treating landfill leachate comprises a reaction pool, wherein a plurality of reactors are arranged in the reaction pool, wherein the plurality of reactors are connected in series, a liquid inlet pipe is arranged at the top of one side of the reactor, a connecting pipe is arranged between the plurality of reactors, the liquid inlet pipe is used for the entry of landfill leachate, a stirring device is arranged in the reactor, a sulfur source delivery device is arranged at the top of the reactor, and a liquid outlet pipe is arranged at the bottom of one side of the reactor.

[0007] By adopting the above technical scheme, the utility model designs a sulfur autotrophic denitrification and denitrification device for treating landfill leachate. When in use, the landfill leachate is firstly introduced into the reactor through the liquid inlet pipe. A plurality of reactors are arranged in the reaction pool, and the plurality of reactors are connected in series. When the landfill leachate enters through one of the reactors, it is input into other reactors through the connecting pipes connected to each other between the reactors. When the landfill leachate enters the reactor, the sulfur source is introduced into the reactor through the sulfur source introduction device at the top of the reactor, and then the reactor is stirred by the stirring device in the reactor, so that the landfill leachate undergoes a sulfur autotrophic denitrification and denitrification reaction in the reactor. Finally, the landfill leachate treated by the reactor flows out through the liquid outlet pipe arranged at the bottom of the reactor for collection. Therefore, the utility model designs a sulfur autotrophic denitrification and denitrification device for treating landfill leachate, by connecting a plurality of reactors, uniformly treats the landfill leachate, thereby improving the treatment efficiency of the landfill leachate.

[0008] Preferably, the stirring device includes a stirring rod fixedly connected to the reactor, a stirring blade is fixedly connected to the stirring rod, one end of the stirring rod is fixedly connected to a driving assembly, the driving assembly includes a servo motor fixedly connected to the outside of the reactor, and the output shaft of the servo motor is fixedly connected to one end of the stirring rod.

[0009] By adopting the above technical solution, the stirring rod is convenient for driving the stirring blade to rotate; the stirring liquid is convenient for stirring the landfill leachate in the reactor and mixing the landfill leachate with the sulfur source; the servo motor is convenient for driving the stirring rod to rotate.

[0010] Preferably, the sulfur source delivery device comprises a shunt pipe arranged at the top of the reactor, the end of the shunt pipe is connected to a delivery pipe, and the delivery pipe is provided with a feeding pump.

[0011] By adopting the above technical solution, the provided shunt pipe facilitates the simultaneous delivery of the sulfur source into multiple reactors; the provided delivery pipe facilitates the delivery of the sulfur source into the shunt pipe; and the provided feeding pump facilitates the control of the flow of the sulfur source.

[0012] Preferably, the inner walls of the plurality of reactors are each provided with a pH monitoring device, and the pH monitoring device comprises a pH sensor fixedly connected to the inner wall of the reactor.

[0013] By adopting the above technical solution, the PH monitoring device is set up to facilitate monitoring the PH value in the reactor, prevent abnormal PH value in the reactor, and provide a good environment for the treatment of landfill leachate; the PH sensor is set up to sense the PH environment.

[0014] Preferably, both the liquid inlet pipe and the liquid outlet pipe are provided with flow control valves, and the flow control valves are used to control the inlet and outlet speeds of the garbage leachate.

[0015] By adopting the above technical solution, a flow control valve is provided, which facilitates controlling the speed and amount of liquid in and out through the flow control valve.

[0016] Preferably, the inner wall of the reactor is provided with an anti-corrosion layer.

[0017] By adopting the above technical solution, the anti-corrosion layer is provided, which makes it easy to prevent the reactor from being corroded by landfill leachate.

[0018] Preferably, the liquid outlet pipe is provided with a liquid outlet, and the liquid outlet is provided with a detachable filter screen.

[0019] By adopting the above technical solution, the liquid outlet is set to facilitate the outflow and collection of the treated landfill leachate; the detachable filter is set to facilitate filtering out impurities in the landfill leachate, and the detachable filter can be removed for cleaning.

[0020] Preferably, the reaction pool is in a sealed state, an exhaust port is provided on the top of the reaction pool, and a gas purification device is connected to the exhaust port.

[0021] By adopting the above technical solution, the exhaust port is set to facilitate the discharge of waste gas generated during the treatment of landfill leachate; the gas purification device is set to facilitate the purification of the generated waste gas to prevent the waste gas from affecting the surrounding environment.

[0022] In summary, this application has the following beneficial effects:

[0023] 1. The device arranges multiple reactors in a reaction pool, controls the landfill leachate to flow into each reactor evenly, and simultaneously adds sulfur source to the reactor through the delivery pipe and the diversion pipe, which improves the treatment efficiency of the landfill leachate;

[0024] 2. This device is equipped with a PH monitoring device to facilitate the observation of the PH value of the landfill leachate treatment process at any time to prevent the PH environment from affecting the quality of landfill leachate treatment;

[0025] 3. The device is provided with flow control valves on both the liquid inlet pipe and the liquid outlet pipe, so as to control the rate of inflow and outflow of the garbage leachate and adjust it at any time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a cross-sectional view of an embodiment;

[0027] Figure 2 A schematic diagram showing the structure of a sulfur source delivery device in an embodiment;

[0028] Figure 3 A schematic diagram showing the structure of the anti-corrosion layer in the embodiment;

[0029] Figure 4 A schematic diagram showing the structure of a detachable filter screen in an embodiment;

[0030] Explanation of the accompanying drawings: 1. Reaction tank; 2. Reactor; 3. Liquid inlet pipe; 4. Connecting pipe; 5. Stirring device; 51. Stirring rod; 52. Stirring blade; 6. Sulfur source delivery device; 61. Diverter pipe; 62. Delivery pipe; 63. Feed pump; 7. Liquid outlet pipe; 8. Driving assembly; 81. Servo motor; 9. PH monitoring device; 91. PH sensor; 10. Flow control valve; 11. Anti-corrosion layer; 12. Liquid outlet; 13. Removable filter; 14. Exhaust port; 15. Gas purification device. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings. The same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper", "lower", "bottom" and "top" used in the following description refer to directions in the accompanying drawings, and the terms "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0032] The utility model discloses a sulfur autotrophic denitrification device for treating garbage leachate. Figures 1 to 4 As shown, it includes a reaction tank 1, in which a plurality of reactors 2 are arranged, and the plurality of reactors 2 are connected in series. A liquid inlet pipe 3 is arranged on the top of one side of the reactor 2, and a connecting pipe 4 is arranged between the plurality of reactors 2. The connecting pipe 4 is interconnected with the plurality of reactors 2, and the liquid inlet pipe 3 is used for the entry of landfill leachate. A stirring device 5 is arranged in the reactor 2, and the stirring device 5 includes a stirring rod 51 vertically fixed in the reactor 2, and a plurality of stirring blades 52 are fixed on the stirring rod 51. A driving assembly 8 is vertically fixed to the bottom of the stirring rod 51, and the driving assembly 8 includes a servo motor 81 vertically fixed to the outside of the reactor 2, and the output shaft of the servo motor 81 is fixed to one end of the stirring rod 51. This stirring method can ensure that the landfill leachate and the sulfur source are fully mixed in the reactor 2, thereby improving the reaction rate and the treatment effect. A sulfur source delivery device 6 is provided on the top of the reactor 2. The sulfur source delivery device 6 includes a shunt pipe 61 provided on the top of the reactor 2. The end of the shunt pipe 61 is connected to a delivery pipe 62. A feeding pump 63 is provided on the delivery pipe 62. The delivery pipe 62 extends to the inside of the reactor 2. This structure allows the sulfur source to be delivered to multiple reactors 2 through the delivery pipe 62, thereby realizing the automatic delivery of the sulfur source and simplifying the operation process. A PH monitoring device 9 is provided on the inner walls of multiple reactors 2. The PH monitoring device 9 includes a PH sensor 91 fixedly connected to the inner wall of the reactor 2. Since the reaction process of the landfill leachate requires a specific PH value environment, the PH sensor 91 is provided to observe the PH environment in the reactor 2. An anti-corrosion layer 11 is provided on the inner wall of the reactor 2. Since the landfill leachate may contain corrosive substances, the reactor 2 made of corrosion-resistant materials can extend the service life of the device.

[0033] A liquid outlet pipe 7 is provided at the bottom of one side of the reactor 2, and a flow control valve 10 is provided on the liquid inlet pipe 3 and the liquid outlet pipe 7. The flow control valve 10 is used to control the inlet and outlet speed of the garbage leachate. The setting of the flow control valve 10 enables the operator to control the outflow time and flow rate of the treated liquid as needed, which is convenient for subsequent collection and treatment. A liquid outlet 12 is provided on the liquid outlet pipe 7, and a detachable filter screen 13 is provided on the liquid outlet 12. The reaction tank 1 is in a sealed state. This sealing structure can prevent the leakage of harmful gases. An exhaust port 14 is provided on the top of the reaction tank 1. The exhaust port 14 is connected to a gas purification device 15. The exhaust port 14 can discharge the waste gas generated during the reaction process in time to ensure a good environment in the reactor 2. At the same time, the exhaust port 14 can also keep the air pressure in the reaction tank 1 stable.

[0034] The device can control the flow control valve 10, the feeding pump 63 and the pH monitoring device 9 through an intelligent control system, making the process of treating landfill leachate by the entire device more convenient and efficient.

[0035] Working principle: The utility model designs a sulfur autotrophic denitrification and denitrification device for treating landfill leachate. The landfill leachate enters into one of the reactors 2 in the reaction pool 1 through the liquid inlet pipe 3, and then enters into other reactors 2 through the connecting pipe 4 between the reactors 2. Then, a sulfur source is added into each reactor 2 through the delivery pipe 62 and the diversion pipe 61 to make it react with the landfill leachate, and then the sulfur source is discharged through the liquid outlet pipe 7 for filtration and collection. Therefore, the utility model designs a sulfur autotrophic denitrification and denitrification device for treating landfill leachate, through a plurality of reactors 2 connected in series, and by segmented treatment of the landfill leachate, the efficiency and effect of the denitrification treatment are improved.

[0036] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sulfur autotrophic denitrification and denitrification device for treating landfill leachate, characterized in that: The invention comprises a reaction pool (1), wherein a plurality of reactors (2) are arranged in the reaction pool (1), wherein the plurality of reactors (2) are connected in series, wherein a liquid inlet pipe (3) is arranged at the top of one side of the reactor (2), and a connecting pipe (4) is arranged between the plurality of reactors (2), wherein the liquid inlet pipe (3) is used for the entry of landfill leachate, wherein a stirring device (5) is arranged in the reactor (2), a sulfur source delivery device (6) is arranged at the top of the reactor (2), and a liquid outlet pipe (7) is arranged at the bottom of one side of the reactor (2).

2. The sulfur autotrophic denitrification and denitrification device for treating landfill leachate according to claim 1, characterized in that: The stirring device (5) comprises a stirring rod (51) fixedly connected to the reactor (2), a stirring blade (52) fixedly connected to the stirring rod (51), a driving component (8) fixedly connected to one end of the stirring rod (51), the driving component (8) comprising a servo motor (81) fixedly connected to the outside of the reactor (2), and an output shaft of the servo motor (81) fixedly connected to one end of the stirring rod (51).

3. The sulfur autotrophic denitrification and denitrification device for treating landfill leachate according to claim 1, characterized in that: The sulfur source delivery device (6) comprises a shunt pipe (61) arranged at the top of the reactor (2), the end of the shunt pipe (61) is connected to a delivery pipe (62), and a delivery pump (63) is arranged on the delivery pipe (62).

4. The sulfur autotrophic denitrification and denitrification device for treating landfill leachate according to claim 1, characterized in that: The inner walls of the plurality of reactors (2) are each provided with a pH monitoring device (9), wherein the pH monitoring device (9) comprises a pH sensor (91) fixedly connected to the inner wall of the reactor (2).

5. The sulfur autotrophic denitrification and denitrification device for treating landfill leachate according to claim 1, characterized in that: The liquid inlet pipe (3) and the liquid outlet pipe (7) are both provided with a flow control valve (10), and the flow control valve (10) is used to control the inlet and outlet speed of the garbage leachate.

6. The sulfur autotrophic denitrification and denitrification device for treating landfill leachate according to claim 1, characterized in that: The inner wall of the reactor (2) is provided with an anti-corrosion layer (11).

7. The sulfur autotrophic denitrification and denitrification device for treating landfill leachate according to claim 1, characterized in that: The liquid outlet pipe (7) is provided with a liquid outlet (12), and the liquid outlet (12) is provided with a detachable filter screen (13).

8. The sulfur autotrophic denitrification and denitrification device for treating landfill leachate according to claim 1, characterized in that: The reaction pool (1) is in a sealed state, and an exhaust port (14) is provided at the top of the reaction pool (1), and a gas purification device (15) is connected to the exhaust port (14).

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