Biological physicochemical treatment device for leachate of domestic waste landfill

Abstract

The utility model belongs to the technical field of household garbage treatment, and particularly relates to a household garbage landfill leachate biological physicochemical treatment device which comprises a support, a mixing barrel arranged on the support and used for containing leachate to be mixed with chemicals, and a lifting positive stirring assembly arranged on the support. The speed reduction motor drives the driving wheel to rotate, the driving wheel is connected with the driven wheel through a belt, the driven wheel drives the rotating shaft to rotate, the positive stirring blades conduct positive stirring on liquid in the center of the mixing barrel, and meanwhile the first speed reduction motor drives the driving rotating wheel to rotate; the driving rotating wheel and the driven rotating wheel are connected through the first belt, the driven rotating wheel is driven to rotate anticlockwise at the moment, then the reverse stirring blades are driven to perform reverse stirring on liquid on the outer ring in the mixing barrel, center liquid rotating in the forward direction collides with liquid on the outer ring rotating in the reverse direction at the moment, the mixing effect is good, and the stirring efficiency is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of domestic garbage treatment and collection, and in particular relates to a biological treatment device for leachate from a domestic garbage landfill. Background Art

[0002] Leachate is a secondary pollutant associated with landfills, and it mainly comes from precipitation and the water contained in the garbage itself. Since there are many physical, chemical and biological factors in the flow of liquid that may affect the properties of the leachate, such as: the nature of the garbage composition, the structure of the landfill, the landfill method, the age of the landfill, rainfall and rainwater runoff, the landfill time, the landfill method, and the surface conditions of the landfill; therefore, the properties of the leachate vary within a fairly large range. The composition of leachate is complex, with high pollutant concentration, high chroma and strong toxicity. It contains not only a large amount of organic pollutants, but also various heavy metal pollutants. It is a complex and high-concentration organic wastewater. If the leachate is not handled properly, it will not only affect the quality of surface water, but also endanger the safety of groundwater. If it is discharged directly into the environment without treatment, it will cause serious environmental pollution.

[0003] At present, the leachate is usually pre-treated or post-treated by physical and chemical methods. The methods mainly include activated carbon adsorption, chemical precipitation, chemical oxidation, chemical reduction, ion exchange, gas extraction and wet oxidation. Chemical agents are added to the leachate for mixing. The existing mixing equipment is relatively traditional, with low stirring efficiency and poor mixing effect. It is impossible to quickly and fully mix the leachate and the chemical agents. The stirring mechanism is placed inside the mixing barrel, which is not convenient for cleaning the mixing barrel. Utility Model Content

[0004] To solve the problems raised in the above background technology. The utility model provides a biochemical treatment device for leachate from a domestic waste landfill, comprising a support, and a mixing barrel arranged on the support for containing leachate for mixing with a reagent, and also comprising a lifting positive stirring component arranged on the support, and a reverse stirring component arranged on the mixing barrel;

[0005] The lifting positive stirring assembly includes a lifting mechanism fixed on a support, and a positive stirring mechanism fixed on the lifting mechanism. The lifting mechanism includes a U-shaped support fixed on the support, a screw rod is arranged between the upper and lower ends of the U-shaped support through bearings, and a pair of sliding rods for guiding.

[0006] As a biological treatment device for leachate from a domestic waste landfill of the utility model, preferably, a threaded sleeve is screwed onto the screw rod, a sliding cylinder that slides up and down is sleeved onto the sliding rod, and a fixing seat is fixed between the sliding cylinders and the threaded sleeves.

[0007] As a biological and physicochemical treatment device for landfill leachate of the present utility model, preferably, a speed reduction motor I is installed on the top of the U-shaped support, and the rotor of the speed reduction motor I is fixedly connected to the lead screw.

[0008] As a biological and physicochemical treatment device for landfill leachate of the present utility model, preferably, the positive stirring mechanism includes an L-shaped bracket fixed on the fixed seat. An electric motor seat and a bearing seat are installed on the L-shaped bracket. A speed reduction motor II is installed on the electric motor seat, and a driving wheel is installed on its rotor.

[0009] As a biological and physicochemical treatment device for landfill leachate of the present utility model, preferably, a rotating shaft is installed on the bearing seat. A driven wheel is fixed on the top of the rotating shaft, and a plurality of positive stirring blades are fixed on the low end of the rotating shaft.

[0010] As a biological and physicochemical treatment device for landfill leachate of the present utility model, preferably, the driven wheel and the driving wheel are connected by a belt.

[0011] As a biological and physicochemical treatment device for landfill leachate of the present utility model, preferably, the reverse stirring assembly includes a driven rotating wheel movably arranged on the inner side wall of the top opening of the mixing barrel through a bearing, and a first electric motor seat fixed on the side wall of the mixing barrel. Three reverse stirring blades are annularly arranged on the inner side wall of the driven rotating wheel. A driving rotating wheel is arranged on the first electric motor seat through a first speed reduction motor. The driving rotating wheel and the driven rotating wheel are connected by a first belt.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] The speed reduction motor II drives the driving wheel to rotate. Since the driving wheel is connected to the driven wheel by a belt, the rotating shaft is driven to rotate through the driven wheel. At this time, the positive stirring blades stir the liquid at the center of the mixing barrel in the positive direction. At the same time, the first speed reduction motor drives the driving rotating wheel to rotate. Since the driving rotating wheel and the driven rotating wheel are connected by a first belt, the driven rotating wheel is driven to rotate counterclockwise at this time, and then the reverse stirring blades stir the liquid in the outer ring of the mixing barrel in the reverse direction. At this time, the positively rotating central liquid collides with the reversely rotating outer ring liquid, and the mixing effect is good and the stirring efficiency is high. Description of the Drawings

[0014] The drawings are used to provide further understanding of the present utility model, and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0015] Figure 1 is the structural schematic diagram of the present utility model;

[0016] Figure 2 Schematic diagram of the lifting mechanism of the present utility model;

[0017] Figure 3 Schematic diagram of the positive stirring mechanism of the present utility model;

[0018] Figure 4 Schematic diagram of the reverse stirring assembly of the present utility model;

[0019] In the figure:

[0020] 1. Support;

[0021] 2. Mixing barrel;

[0022] 3. Lifting positive stirring assembly; 31. Lifting mechanism; 311. U-shaped support; 312. Lead screw; 313. Slide bar; 314. Threaded sleeve; 315. Slide cylinder; 316. Fixed seat; 317. Reduction motor one; 32. Positive stirring mechanism; 321. L-shaped bracket; 322. Motor seat; 323. Bearing seat; 324. Reduction motor two; 325. Driving wheel; 326. Rotating shaft; 327. Driven wheel; 328. Positive stirring blade; 329. Belt;

[0023] 4. Reverse stirring assembly; 41. Driven rotating wheel; 42. First motor seat; 43. Reverse stirring blade; 44. Driving rotating wheel; 45. First belt; 46. First reduction motor. Specific implementation manner

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment 1

[0026] As Figure 1 shown;

[0027] A biological and physicochemical treatment device for leachate in a domestic waste landfill, comprising a support 1 and a mixing barrel 2 provided on the support 1 for containing leachate and mixing it with a chemical agent.

[0028] In this embodiment: To solve the technical problems existing in this prior art, such as those disclosed in the background art above, "Currently, the leachate to be treated usually undergoes pretreatment or subsequent treatment by physical and chemical methods. The methods mainly include activated carbon adsorption, chemical precipitation, chemical oxidation, chemical reduction, ion exchange, air stripping, wet oxidation, and other methods. When adding chemical agents to the leachate for mixing, the existing mixing equipment is relatively traditional, with low stirring efficiency and poor mixing effect, and it is impossible to quickly and fully mix the leachate with the chemical agents." Considering the actual use, this problem is obviously a real and relatively difficult problem to solve. In view of this, to solve this technical problem, a lifting positive stirring component 3 and a reverse stirring component 4 are added on this basis.

[0029] As Figures 1-4 shown in the figure;

[0030] Combined with the above content, in order to improve the stirring efficiency and the mixing effect, it further includes a lifting positive stirring component 3 arranged on the support 1 and a reverse stirring component 4 arranged on the mixing barrel 2;

[0031] The lifting positive stirring component 3 includes a lifting mechanism 31 fixed on the support 1 and a positive stirring mechanism 32 fixed on the lifting mechanism 31. The lifting mechanism 31 includes a U-shaped support 311 fixed on the support 1. A lead screw 312 is arranged between the upper and lower ends of the U-shaped support 311 through bearings, and a pair of sliding rods 313 for guiding are provided. A threaded sleeve 314 is screwed on the lead screw 312, and a sliding cylinder 315 that slides up and down is sleeved on the sliding rod 313. A fixed seat 316 is fixed between the two sliding cylinders 315 and the threaded sleeve 314. A first reduction motor 317 is installed on the top of the U-shaped support 311, and the rotor of the first reduction motor 317 is fixedly connected to the lead screw 312.

[0032] In this embodiment: The first reduction motor 317 drives the lead screw 312 to rotate. Since the threaded sleeve 314 is screwed on the lead screw 312, the sliding cylinder 315 is sleeved on the sliding rod 313, and both sliding cylinders 315 and the threaded sleeve 314 are fixed on the fixed seat 316, the fixed seat 316 limits the threaded sleeve 314 and the sliding cylinder 315. At this time, the rotation of the lead screw 312 drives the fixed seat 316 to move up and down, and the positive stirring mechanism 32 is driven by the lifting mechanism 31 to move up and down inside the mixing barrel 2, which is convenient for pulling out the positive stirring mechanism 32 from inside the mixing barrel 2 and facilitating the cleaning of the mixing barrel 2.

[0033] In an alternative embodiment, the positive stirring mechanism 32 includes an L-shaped bracket 321 fixed to the fixed seat 316. A motor seat 322 and a bearing seat 323 are mounted on the L-shaped bracket 321. A second reduction motor 324 is mounted on the motor seat 322, and a driving wheel 325 is mounted on its rotor. A rotating shaft 326 is mounted on the bearing seat 323. A driven wheel 327 is fixed to the top of the rotating shaft 326. A plurality of positive stirring blades 328 are fixed to the lower end of the rotating shaft 326. The driven wheel 327 is connected to the driving wheel 325 by a belt 329.

[0034] In this embodiment: The second reduction motor 324 drives the driving wheel 325 to rotate. Since the driving wheel 325 is connected to the driven wheel 327 by a belt 329, the rotating shaft 326 is driven to rotate through the driven wheel 327. At this time, the positive stirring blades 328 positively stir the liquid at the center of the mixing barrel 2.

[0035] As a biological and physicochemical treatment device for landfill leachate of the present utility model, preferably, the reverse stirring assembly 4 includes a driven rotating wheel 41 movably arranged on the inner side wall of the top opening of the mixing barrel 2 through a bearing, and a first motor seat 42 fixed to the side wall of the mixing barrel 2. Three reverse stirring blades 43 are annularly arranged on the inner side wall of the driven rotating wheel 41. A driving rotating wheel 44 is arranged on the first motor seat 42 through a first reduction motor 46. The driving rotating wheel 44 is connected to the driven rotating wheel 41 by a first belt 45.

[0036] In this embodiment: The first reduction motor 46 drives the driving rotating wheel 44 to rotate. Since the driving rotating wheel 44 is connected to the driven rotating wheel 41 by a first belt 45, the driven rotating wheel 41 is driven to rotate counterclockwise at this time, and then the reverse stirring blades 43 are driven to reversely stir the liquid in the outer ring of the mixing barrel 2.

[0037] The working principle of the present utility model:

[0038] The second reduction motor 324 drives the driving wheel 325 to rotate. Since the driving wheel 325 is connected to the driven wheel 327 by a belt 329, the rotating shaft 326 is driven to rotate through the driven wheel 327. At this time, the positive stirring blades 328 positively stir the liquid at the center of the mixing barrel 2. At the same time, the first reduction motor 46 drives the driving rotating wheel 44 to rotate. Since the driving rotating wheel 44 is connected to the driven rotating wheel 41 by a first belt 45, the driven rotating wheel 41 is driven to rotate counterclockwise at this time, and then the reverse stirring blades 43 are driven to reversely stir the liquid in the outer ring of the mixing barrel 2. At this time, the centrally rotating liquid rotating forward collides with the outer-ring liquid rotating backward, resulting in good mixing effect and high stirring efficiency.

[0039] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A biochemical treatment device for leachate from a domestic waste landfill, comprising a support (1) and a mixing barrel (2) arranged on the support (1) for containing leachate for mixing with a reagent, characterized in that: It also includes a lifting positive stirring component (3) arranged on the support (1), and a reverse stirring component (4) arranged on the mixing barrel (2); The lifting positive stirring assembly (3) comprises a lifting mechanism (31) fixed on a support (1), and a positive stirring mechanism (32) fixed on the lifting mechanism (31), wherein the lifting mechanism (31) comprises a U-shaped support (311) fixed on the support (1), a screw rod (312) and a pair of sliding rods (313) for guiding are arranged between the upper and lower ends of the U-shaped support (311) via bearings.

2. The biochemical treatment device for leachate from a domestic waste landfill according to claim 1, characterized in that: The screw rod (312) is screwed with a threaded sleeve (314), the slide rod (313) is sleeved with a slide cylinder (315) that slides up and down, and a fixing seat (316) is fixed between the slide cylinders (315) and the threaded sleeve (314).

3. The biochemical treatment device for leachate from a domestic waste landfill according to claim 1, characterized in that: A reduction motor 1 (317) is installed on the top of the U-shaped support (311), and the rotor of the reduction motor 1 (317) is fixedly connected to the screw rod (312).

4. The biochemical treatment device for leachate from a domestic waste landfill according to claim 1, characterized in that: The positive stirring mechanism (32) comprises an L-shaped bracket (321) fixed on a fixed seat (316), a motor seat (322) and a bearing seat (323) being mounted on the L-shaped bracket (321), a reduction motor 2 (324) being mounted on the motor seat (322), and a driving wheel (325) being mounted on the rotor thereof.

5. The biochemical treatment device for leachate from a domestic waste landfill according to claim 4, characterized in that: A rotating shaft (326) is mounted on the bearing seat (323), a driven wheel (327) is fixed on the top of the rotating shaft (326), and a plurality of positive stirring blades (328) are fixed on the lower end of the rotating shaft (326).

6. The biochemical treatment device for leachate from a domestic waste landfill according to claim 5, characterized in that: The driven wheel (327) and the driving wheel (325) are connected via a belt (329).

7. The biochemical treatment device for leachate from a domestic waste landfill according to claim 1, characterized in that: The anti-stirring component (4) comprises a driven rotating wheel (41) movably arranged on the inner side wall of the top opening of the mixing barrel (2) through a bearing, and a first motor seat (42) fixed to the side wall of the mixing barrel (2), three anti-stirring blades (43) are arranged in a circular array on the inner side wall of the driven rotating wheel (41), and a driving rotating wheel (44) is arranged on the first motor seat (42) through a first reduction motor (46), and the driving rotating wheel (44) and the driven rotating wheel (41) are connected by a first belt (45).

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