Negative pressure type jet aeration device for landfill leachate treatment

Abstract

The utility model relates to a negative pressure type jet aeration device for landfill leachate treatment, which comprises a shell, a water inlet is arranged at one end of the shell, a gas inlet is arranged at the other end of the shell, a liquid phase cavity and a gas phase cavity which are respectively communicated with the water inlet and the gas inlet are arranged in the shell, and a plurality of jet pipes are arranged on the shell at intervals. A nozzle communicated with the liquid phase cavity is arranged in the jet pipe, an annular space communicated with the gas phase cavity is formed in the outer wall of the jet pipe, air holes communicated with the interior of the jet pipe are formed in the annular space in an annular array mode, and high-speed jet flow sprayed out of the nozzle generates negative pressure in the jet pipe to suck air. Air is mixed with the leachate under the action of high shear force of jet flow to form a large number of microbubbles, the microbubbles are in full contact with the leachate in the pool, a large number of molecular oxygen is dissolved in the pool, effective oxygen transmission is achieved, meanwhile, the high-speed jet flow can cause violent stirring and convection of the leachate, the oxidation-reduction process of the leachate is increased, and the treatment effect of the leachate is improved. The degradation effect of the leachate is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water treatment technical field, concretely relates to a negative pressure type jet flow aeration device for landfill leachate treatment. BACKGROUND

[0002] Aeration is widely used in leachate treatment. By forcing air into leachate through aeration equipment, leachate in the tank is in contact with air to be oxygenated, and leachate is agitated to accelerate the transfer of oxygen in the air to leachate, prevent suspended matter in the tank from sinking, and strengthen the contact between organic matter and microorganisms and dissolved oxygen in the tank to oxidize and decompose organic matter in leachate.

[0003] Traditional air blowing aeration is to increase the pressure of gas by a blower, send the gas into an aerator, and then uniformly diffuse and mix the gas in water through a gas diffuser to achieve oxygen dissolution and wastewater oxidation. However, this method has a short residence time of gas bubbles in water, relatively low oxygen transfer efficiency, limits the speed of oxidation-reduction reaction, and easily causes gas bubbles to gather to form a bubble group, resulting in uneven oxygen transfer and affecting the oxygenation effect of leachate. SUMMARY

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a negative pressure type jet flow aeration device for landfill leachate treatment.

[0005] The utility model can achieve the purpose by the following technical scheme: a negative pressure type jet flow aeration device for landfill leachate treatment, comprising a shell, one end of the shell is provided with a water inlet, the other end of the shell is provided with an air inlet, the shell is provided with a liquid phase cavity and a gas phase cavity which are in communication with the water inlet and the air inlet respectively, a plurality of jet flow pipes are arranged at intervals on the shell, a nozzle in communication with the liquid phase cavity is arranged in the jet flow pipe, an annular gap in communication with the gas phase cavity is formed on the outer wall of the jet flow pipe, and gas holes in communication with the inside of the jet flow pipe are arranged in an annular array on the annular gap.

[0006] Preferably, a negative pressure efficiency pipe is mounted at the front end of the nozzle.

[0007] Preferably, a spiral pipe is arranged at the rear end of the nozzle.

[0008] Preferably, a filter is arranged at the water inlet.

[0009] Preferably, a diffusion pipe is mounted at the end of the jet flow pipe.

[0010] Preferably, flanges are mounted on the water inlet and the air inlet, and sealing rings are arranged on the flanges.

[0011] The utility model discloses a beneficial effect is: through the high -speed jet that nozzle sprays produces the negative pressure in the jet pipe, inhale air, and air is mixed under the high shear force of jet and form a large amount of micro -bubble, and micro -bubble and pool percolate fully contact, make a large amount of molecular oxygen dissolve in the pool, realize effective oxygen transmission, and high -speed jet can cause the violent agitation and convection of percolate, increase the oxidation -reduction process of percolate, improve the degradation effect of percolate. BRIEF DESCRIPTION OF DRAWINGS

[0012] The utility model makes further explanation to the utility model with the drawings, but the embodiment in the drawing does not constitute any limitation to the utility model, and for ordinary skilled person in the art, under the premise of not paying creative labor, can also obtain other drawings according to the following drawings.

[0013] Figure 1 It is a structural schematic diagram for the negative pressure type jet aeration device for garbage percolate treatment of the utility model.

[0014] Figure 2 It is Figure 1 Partial schematic view in A place.

[0015] The mark shown in the drawing is: 1, shell, 2, water inlet, 3, air inlet, 4, liquid phase cavity, 5, gas phase cavity, 6, jet pipe, 7, nozzle, 8, annular gap, 9, air hole, 10, negative pressure efficiency pipe, 11, spiral pipe, 12, filter, 13, diffusion pipe, 14, flange, 15, sealing ring. DETAILED DESCRIPTION

[0016] It should be explained that if the embodiment of the utility model has the directional indication (such as up, down, left, right, front, back……), then the directional indication is only used to explain the relative position relationship, movement condition etc. between the components in a certain specific posture (such as shown in the drawing), if the specific posture changes, then the directional indication also changes accordingly.

[0017] In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on that ordinary skilled person in the art can realize, when the combination of technical solutions appears mutual contradiction or unattainability, it should be considered that the combination of technical solutions does not exist, also not in the protection scope required by the utility model.

[0018] The technical solutions of the utility model will be described clearly and completely in the following by combining with specific embodiments, obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by ordinary skilled person in the art without making creative labor, all belong to the protection scope of the utility model.

[0019] Referring to Figures 1 to 2 As shown in the utility model, the structure is: a negative pressure type jet flow aeration device for landfill leachate treatment, including casing 1, one end of casing 1 is equipped with water inlet 2, water inlet 2 is connected with water pump through water inlet pipeline, the other end of casing 1 is equipped with air inlet 3, air inlet 3 is communicated with the air of outside through air inlet pipeline, casing 1 is equipped with liquid phase cavity 4, gas phase cavity 5 in communication with water inlet 2, air inlet 3 respectively, after the pressurization of leachate by water pump, through water inlet 2, enter liquid phase cavity 4, then fill the whole liquid phase cavity 4, casing 1 is equipped with multiple jet pipes 6 at intervals, jet pipe 6 is equipped with nozzle 7 in communication with liquid phase cavity 4, the leachate of pressurization in liquid phase cavity 4 is sprayed from nozzle 7, and a high-speed columnar water flow is formed in jet pipe 6, the outer wall of jet pipe 6 is provided with annular gap 8 in communication with gas phase cavity 5, a plurality of air holes 9 in communication with the inside of jet pipe 6 are arranged in annular array on annular gap 8, the high-speed water flow generates negative pressure in jet pipe 6, the air in gas phase cavity 5 is uniformly sucked into jet pipe 6 through air hole 9 on annular gap 8, under the action of high shear force of the water flow, the air and leachate are mixed to form a large number of micro-bubbles, and the leachate is sprayed from jet pipe 6, and is quickly distributed and mixed into leachate pool, so that a large amount of molecular oxygen is dissolved in the leachate in the pool, and the agitation generated by the water flow produces stirring effect in the leachate pool.

[0020] As Figure 2 As shown in the utility model, the front end of nozzle 7 is provided with negative pressure efficiency pipe 10, so that the water flow is subjected to the action of water pressure driving force for a long time, thereby increasing the flow rate of water flow, further improving the negative pressure effect, and enabling more air to be sucked in.

[0021] As Figure 2 As shown in the utility model, the rear end of nozzle 7 is provided with spiral pipe 11, so that the leachate can generate spiral flow after being sprayed from nozzle 7, thereby increasing the mixing effect of leachate and air.

[0022] As Figure 1 As shown in the utility model, filter 12 is arranged at water inlet 2, so as to avoid that impurities in leachate block nozzle 7.

[0023] As Figure 1 As shown in the utility model, diffusion pipe 13 is arranged at the end of jet pipe 6, and diffusion pipe 13 is in the shape of a horn, so that the water flow and micro-bubbles sprayed from jet pipe 6 can be diffused.

[0024] As Figure 1 As shown in the utility model, flange 14 is arranged on water inlet 2 and air inlet 3, which is used for connecting pipeline, and sealing ring 15 is arranged on flange 14, so as to improve the sealing property of flange 14.

[0025] In use, the leachate in the leachate tank is pressurized by a water pump, enters the liquid cavity 4 through the water inlet 2, and then fills the entire liquid cavity 4, the pressurized leachate is sprayed from the nozzle 7, and a high-speed columnar water flow is formed in the jet pipe 6, the high-speed water flow generates a negative pressure in the jet pipe 6, the air in the gas cavity 5 is uniformly sucked into the jet pipe 6 through the air holes 9 on the annular gap 8, under the action of the high shear force of the water flow, the air and the leachate are mixed to form a large amount of fine bubbles, which are sprayed from the jet pipe 6 along with the leachate, quickly distributed and mixed into the leachate tank, so that a large amount of molecular oxygen is dissolved in the leachate in the tank, and the agitation generated by the water flow produces an agitation effect in the leachate tank.

[0026] The utility model is further described above with the help of specific embodiments, but it should be understood that the specific description here should not be understood as limiting the essence and scope of the utility model, and various modifications made to the above embodiments by ordinary skilled persons in the art after reading the specification all belong to the scope protected by the utility model.

Claims

1. A negative pressure type jet aeration device for leachate treatment, characterized by: The utility model relates to a water conservancy irrigation device, including shell (1), one end of shell (1) is equipped with water inlet (2), the other end of shell (1) is equipped with air inlet (3), shell (1) is equipped with liquid phase cavity (4) respectively with water inlet (2), air inlet (3) intercommunication, gas phase cavity (5) in, the interval of shell (1) is equipped with multiple jet pipes (6), the jet pipe (6) is equipped with with the nozzle (7) of liquid phase cavity (4) intercommunication in, the outer wall of jet pipe (6) is equipped with with the annular gap (8) of gas phase cavity (5) intercommunication, the annular array of ring gap (8) is equipped with with the air hole (9) of jet pipe (6) interior intercommunication.

2. The negative pressure type jet aeration device for landfill leachate treatment according to claim 1, characterized in that: The front end of the nozzle (7) is provided with a negative pressure booster pipe (10).

3. The negative pressure type jet aeration device for landfill leachate treatment according to claim 1, characterized in that: The rear end of the nozzle (7) is provided with a spiral pipe (11).

4. The negative pressure type jet aeration device for landfill leachate treatment according to claim 1, characterized in that: The water inlet (2) is provided with a filter (12).

5. The negative pressure type jet aeration device for landfill leachate treatment according to claim 1, characterized in that: The end of the jet pipe (6) is provided with a diffusion pipe (13).

6. The negative pressure type jet aeration device for landfill leachate treatment according to claim 1, characterized in that: The water inlet (2) and the air inlet (3) are both provided with a flange (14), and the flange (14) is provided with a sealing ring (15).

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