Landfill leachate treatment system

Abstract

The utility model relates to the technical field of landfill leachate treatment equipment, in particular to a landfill leachate treatment system, which comprises a leachate storage tank, an ammonia nitrogen removal unit, a calcium adding unit and a deep fluorine removal unit which are sequentially connected through pipelines, a liquid inlet is formed in the top of the tank body, a filtering support is installed at the liquid inlet, a liquid collecting groove is formed in the upper end of the filtering support, and a filtering net is fixed to the bottom of the liquid collecting groove. According to the utility model, the filter screen is arranged at the liquid inlet, so that solid garbage in the landfill leachate can be effectively filtered, the solid garbage is prevented from entering a treatment system to damage related equipment of the treatment system, impurities are prevented from reacting with the landfill leachate, and the treatment effect of the landfill leachate is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of waste leachate's treatment equipment, especially relates to a waste leachate's treatment system. BACKGROUND

[0002] The sewage produced after the compression of garbage is called waste leachate, and these leachates have the characteristics of high pollutant concentration, large water quality variation range and strong odor.

[0003] Before the treatment of waste leachate, it needs to be collected and stored, and the existing waste leachate is stored by using a tank. Since the waste leachate contains a certain amount of solid waste, the solid waste is easy to accumulate at the bottom of the tank during the use of the waste leachate storage tank. During the suction process of the waste leachate, the suction pump is easy to be blocked, and the pump body is easy to be damaged in severe cases. SUMMARY

[0004] Therefore, the utility model provides a waste leachate's treatment system to solve the problem that the solid waste is easy to accumulate at the bottom of the tank and the suction pump is easy to be blocked during the suction process of the waste leachate.

[0005] To achieve the above purpose, the utility model provides a waste leachate's treatment system, which comprises a leachate storage tank, an ammonia and nitrogen removal unit, a calcium addition unit and a deep fluorine removal unit connected in sequence through pipelines, wherein the leachate storage tank comprises a tank body, a storage cavity for storing waste leachate is arranged in the tank body, a liquid inlet communicating with the storage cavity is arranged at the top of the tank body, a filter support is rotatably arranged at the liquid inlet, the rotational center line of the filter support is arranged vertically, a liquid collecting groove is arranged at the upper end of the filter support, a filter screen is fixed to the bottom of the liquid collecting groove, a power assembly is fixed to the outer wall of the tank body, the power assembly is drivingly connected with the filter support and is used to drive the rotation of the filter support, a support frame is fixed to the outer wall of the tank body, a scraping plate extending to the bottom of the liquid collecting groove is fixed to the support frame, and a liquid outlet pipe extending into the storage cavity is arranged on the outer wall of the tank body.

[0006] In an optional example, a suction module is further arranged on the support frame, and the suction module has a movable suction end.

[0007] In an optional example, the suction module comprises a rotating shaft rotatably connected with the support frame, an oscillating arm is fixed to one end of the rotating shaft, the suction end comprises a suction head fixed to the end of the oscillating arm, a driven pulley is fixed to the other end of the rotating shaft, a driving motor is fixed to the support frame, a driving pulley is fixed to the output shaft of the driving motor, and a driving belt for driving is sleeved on the driving pulley and the driven pulley.

[0008] In an optional example, the power assembly comprises a power motor and a power gear, the power motor is fixedly connected with the outer wall of the tank body, the power gear is fixedly connected with the output shaft of the power motor, and the top of the filter support is fixed with a driven gear ring, the driven gear ring is engaged with the power gear.

[0009] In an optional example, the upper end of the liquid inlet is provided with a top mounting groove, a top bearing is inserted and fixed in the top mounting groove, and the filter support is fixedly connected with the inner ring of the top bearing.

[0010] In an optional example, the top of the filter support is provided with an outwardly extending support flange, and the diameter of the support flange is greater than the inner ring diameter of the top bearing.

[0011] In an optional example, the bottom of the liquid collecting groove is provided with a vertical through groove penetrating through the liquid collecting groove, and the filter screen is fixed in the vertical through groove.

[0012] In an optional example, a flow guide block is further arranged in the liquid collecting groove.

[0013] In an optional example, the scraping plate has a helical lifting portion.

[0014] The beneficial effects of the utility model are that the filter screen arranged at the liquid inlet can effectively filter the solid waste in the landfill leachate, avoid the solid waste from entering the treatment system to damage the related equipment of the treatment system, avoid the reaction between sundries and the landfill leachate, and ensure the treatment effect of the landfill leachate; the centralized solid particle waste can be discharged from the tank body by increasing the sewage suction module, automatic treatment is realized, and the treatment efficiency of the solid waste is improved; through the work of the power motor, the power motor drives the power gear to rotate, the power gear drives the driven gear ring to rotate, the driven gear ring drives the filter support to rotate, and the scraping plate can continuously move along the bottom of the filter support, the filtering effect of the filter screen is ensured, the filter screen is prevented from being blocked due to long-term use, and the maintenance frequency of the leachate storage tank is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only the utility model, and those skilled in the art can obtain other drawings according to these drawings without creating labor.

[0016] Figure 1 It is a continuous relationship diagram of the landfill leachate treatment system.

[0017] Figure 2 It is the front view of the leachate storage tank in the utility model;

[0018] Figure 3 It is the front view of the leachate storage tank in the utility model;

[0019] Figure 4 It is the perspective view of the leachate storage tank in the utility model;

[0020] Figure 5 It is the sectional view of the leachate storage tank in the utility model;

[0021] Figure 6 It is Figure 5 It is the enlarged schematic view of the I structure;

[0022] Figure 7 It is the perspective view of the filter support in the utility model.

[0023] In the drawing, marked as: 1, leachate storage tank; 11, tank body; 12, storage cavity; 13, liquid inlet; 131, top mounting groove; 14, filter support; 141, liquid collecting groove; 142, support flange; 143, vertical through slot; 15, filter screen; 16, support frame; 17, dirt scraping plate; 171, lifting part; 18, liquid outlet pipe; 191, rotating shaft; 192, swing arm; 193, dirt suction head; 194, driven pulley; 195, driving motor; 196, driving pulley; 197, driving belt; 110, power motor; 111, power gear; 112, driven gear ring; 113, top bearing; 114, flow guide block; 2, ammonia nitrogen removal unit; 3, calcium adding unit; 4, deep fluorine removal unit. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the following will be further described in detail in combination with specific embodiments.

[0025] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0026] In one embodiment, please refer to Figures 1 to 5 As shown, this Utility model A landfill leachate treatment system is provided, comprising a leachate storage tank 1, a dosing unit, an ammonia nitrogen removal unit 2, a calcium addition unit 3, and a deep fluoride removal unit 4, which are connected in sequence by pipelines.

[0027] The dosing unit includes a sodium hypochlorite dosing module, a sulfuric acid dosing module, a calcium chloride dosing module, a calcium hydroxide dosing module, a polyaluminum chloride dosing module, a polyacrylamide dosing module, and a defluorination agent dosing module. The outlets of the sodium hypochlorite dosing module and the sulfuric acid dosing module are connected to the ammonia nitrogen removal unit 2. The outlets of the calcium chloride dosing module, the calcium hydroxide dosing module, the polyaluminum chloride dosing module, and the polyacrylamide dosing module are connected to the calcium dosing unit 3. The outlets of the polyacrylamide dosing module and the defluorination agent dosing module are connected to the deep defluorination unit 4. Through the system design of the ammonia nitrogen removal unit 2, the calcium dosing unit 3, and the deep defluorination unit 4, the leachate flows through different units, allowing the landfill leachate to undergo multiple processes such as ion exchange, adsorption, and chemical precipitation, thereby achieving deep defluorination of the fluoride-containing landfill leachate.

[0028] The leachate storage tank 1 comprises a tank body 11, a storage cavity 12 for storing landfill leachate is arranged in the tank body 11, a liquid inlet 13 communicating with the storage cavity 12 is arranged at the top of the tank body 11, a filter support 14 is rotatably arranged at the liquid inlet 13, the rotation center line of the filter support 14 is arranged vertically, a liquid collecting groove 141 is arranged at the upper end of the filter support 14, a filter screen 15 is fixed at the bottom of the liquid collecting groove 141, a power assembly is fixed on the outer wall of the tank body 11, the power assembly is drivingly connected with the filter support 14 and is used for driving the rotation of the filter support 14, a support frame 16 is fixed on the outer wall of the tank body 11, a dirt scraping plate 17 extending to the bottom of the liquid collecting groove 141 is fixed on the support frame 16, and a liquid outlet pipe 18 extending into the storage cavity 12 is arranged on the outer wall of the tank body 11. Wherein, the landfill leachate is transported to the liquid inlet 13 through a pipeline, and after being filtered by the filter screen 15 at the bottom of the liquid collecting groove 141, it flows into the storage cavity 12 for storage, and when it needs to be treated, it is discharged into the ammonia and nitrogen removal unit 2 through the liquid outlet pipe 18 for subsequent process treatment, thereby realizing effective treatment of the landfill leachate; the filtered solid waste is concentrated and treated by the dirt scraping plate 17; the liquid outlet pipe 18 is connected with the ammonia and nitrogen removal unit (2) through a pipeline.

[0029] Specifically, the filter screen 15 arranged at the liquid inlet 13 can effectively filter the solid waste in the landfill leachate, avoid the solid waste entering the treatment system and causing damage to the related equipment of the treatment system, and avoid the reaction of sundries and the landfill leachate, thereby ensuring the treatment effect of the landfill leachate.

[0030] In an optional example, please refer to Figures 1 to 5 As shown, in order to facilitate the treatment of solid waste, a dirt suction module is further arranged on the support frame 16, and the dirt suction module has a movable dirt suction end.

[0031] Specifically, by increasing the dirt suction module, the concentrated solid waste particles can be discharged from the tank body 11, thereby realizing automatic treatment and improving the treatment efficiency of the solid waste.

[0032] In an optional example, please refer to Figures 1 to 6As shown, in order to facilitate the disassembly of the suction module, the suction module comprises a rotating shaft 191 connected with the support frame 16 through bearing connection, one end of the rotating shaft 191 is fixed with a swing arm 192 through key connection, the suction end comprises a suction head 193 fixed on the end of the swing arm 192 through bolt connection, the other end of the rotating shaft 191 is fixed with a driven pulley 194 through key connection, the support frame 16 is fixed with a driving motor 195 through bolt connection, the output shaft of the driving motor 195 is fixed with a driving pulley 196 through key connection, and the driving pulley 196 and the driven pulley 194 are sleeved with a driving belt 197 for driving. Among them, the rotation center line of the rotating shaft is arranged along the horizontal direction; the driving motor 195 can adopt a servo motor.

[0033] Specifically, in the example, when the driving motor 195 works forward, the output shaft of the driving motor 195 drives the driving pulley 196 to rotate by a set forward angle, the driving pulley 196 drives the driving belt 197 to move, the driving belt 197 drives the driven pulley 194 to rotate, the driven pulley 194 drives the rotating shaft 191 to rotate, the rotating shaft 191 drives the swing arm 192 to rotate by a set angle, and the swing arm 192 drives the suction head 193 to move by a set distance; when the driving motor 195 works reversely, the output shaft of the driving motor 195 drives the driving pulley 196 to rotate to reset, and the swing arm 192 drives the suction head 193 to move to the initial position, realizing the reciprocating movement of the suction head 193 and ensuring the sewage effect of the suction module.

[0034] In an optional example, please refer to Figures 1 to 6 As shown, the power assembly comprises a power motor 110 and a power gear 111, the power motor 110 is fixedly connected with the outer wall of the tank body 11 through bolt connection, the power gear 111 is fixedly connected with the output shaft of the power motor 110 through key connection, and the top of the filter support 14 is fixedly provided with a driven gear ring 112 through bolt connection. The driven gear ring 112 is engaged with the power gear 111.

[0035] Specifically, in the example, through the work of the power motor 110, the power motor 110 drives the power gear 111 to rotate, the power gear 111 drives the driven gear ring 112 to rotate, and the driven gear drives the filter support 14 to rotate, so that the scraping plate 17 can continuously move along the bottom of the filter support 14, ensuring the filtering effect of the filter screen 15, avoiding the blockage of the filter screen 15 caused by long-term use, and reducing the maintenance frequency of the percolate storage tank 1.

[0036] In an optional example, please refer to Figures 1 to 6As shown, the upper end of the liquid inlet 13 is provided with a top mounting groove 131, and a top bearing 113 is inserted and fixed in the top mounting groove 131. The filter support 14 is fixedly connected with the inner ring of the top bearing 113.

[0037] Specifically, the top bearing 113 added in the example makes the rotation of the filter support 14 smoother, thereby ensuring the filtering effect of the filter screen 15.

[0038] In an optional example, refer to Figures 1 to 7 As shown, the top of the filter support 14 is provided with an outwardly extending support flange 142, and the diameter of the support flange 142 is greater than the inner ring diameter of the top bearing 113.

[0039] Specifically, the support flange 142 added in the example can increase the vertical support force of the filter support 14, reduce the shaking of the filter support 14 when it is impacted by the leachate, thereby ensuring the stability of the filter support 14, reducing the shaking, and protecting the top bearing 113 and other structures.

[0040] In an optional example, refer to Figures 1 to 7 As shown, the bottom of the liquid collecting groove 141 is provided with a vertical through groove 143 penetrating the liquid collecting groove 141, and the filter screen 15 is fixed in the vertical through groove 143 by welding.

[0041] Specifically, the filter screen 15 is fixed in the vertical through groove 143 in the example, which facilitates the disassembly and assembly of the filter screen 15.

[0042] In an optional example, refer to Figures 1 to 7 As shown, a flow guide block 114 is further arranged in the liquid collecting groove 141, and the flow guide block 114 is located at the center of the liquid collecting groove 141. The flow guide block 114 has a conical structure.

[0043] Specifically, the conical flow guide block 114 added in the example can uniformly disperse the leachate when the leachate enters the liquid collecting groove 141, thereby avoiding the impact on the local filter screen 15, improving the service life of the filter screen 15, and reducing the maintenance frequency of the leachate storage tank 1.

[0044] In an optional example, refer to Figures 1 to 7 As shown, the scraping plate 17 has a lifting portion 171 in a spiral structure.

[0045] Specifically, the lifting portion 171 of the scraping plate 17 can slowly lift the solid waste in the garbage, avoid the accumulation at the bottom of the liquid collecting groove 141, and facilitate the suction and discharge by the suction head 193.

[0046] In general, the present example can effectively filter solid waste in the landfill leachate through the filter screen 15 arranged at the liquid inlet 13, avoid solid waste from entering the treatment system, cause damage to the related equipment of the treatment system, and avoid the reaction of sundries and the landfill leachate, ensure the treatment effect of the landfill leachate;By increasing the dirt suction module, the concentrated solid particle waste can be discharged from the tank body 11, realizing automatic processing and improving the processing efficiency of the solid waste;Through the work of the power motor 110, the power motor 110 drives the power gear 111 to rotate, the power gear 111 drives the driven gear ring 112 to rotate, the driven gear drives the filter support 14 to rotate, so that the dirt scraping plate 17 can continuously move along the bottom of the filter support 14, ensure the filtering effect of the filter screen 15, avoid the blockage of the filter screen 15 caused by long-term use, and reduce the maintenance frequency of the leachate storage tank 1.

[0047] Those skilled in the art will understand that the above discussion of any embodiment is only exemplary and is not intended to limit the scope of the present application (including claims) to these examples;Under the idea of the present application, the above embodiments or technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in detail for the sake of brevity.

[0048] The present application is intended to cover all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Accordingly, any and all such modifications, variations, alternatives and equivalents should be taken as falling within the scope of the present application.

Claims

1. A landfill leachate treatment system comprising a leachate storage tank (1), an ammonia-nitrogen removal unit (2), a calcium addition unit (3) and a deep fluorine removal unit (4) connected in sequence by pipelines, characterized in that, The leachate storage tank (1) comprises a tank body (11) provided with a storage cavity (12) for storing garbage leachate, a liquid inlet (13) is arranged on the top of the tank body (11) and communicates with the storage cavity (12), a filter support (14) is rotatably arranged on the liquid inlet (13), the rotation center line of the filter support (14) is arranged vertically, a liquid collecting groove (141) is arranged on the upper end of the filter support (14), a filter screen (15) is fixed on the bottom of the liquid collecting groove (141), a power assembly is fixed on the outer wall of the tank body (11) and is drivingly connected with the filter support (14) and used for driving the rotation of the filter support (14), a support frame (16) is fixed on the outer wall of the tank body (11), a dirt scraping plate (17) extending to the bottom of the liquid collecting groove (141) is fixed on the support frame (16), and a liquid outlet pipe (18) extending into the storage cavity (12) is arranged on the outer wall of the tank body (11).

2. The treatment system of landfill leachate according to claim 1, characterized in that, A dirt suction module is further arranged on the support frame (16), and the dirt suction module has a movable dirt suction end.

3. The treatment system of landfill leachate according to claim 2, characterized in that, The dirt suction module comprises a rotating shaft (191) rotatably connected with the support frame (16), one end of the rotating shaft (191) is fixed with a swing arm (192), the dirt suction end comprises a dirt suction head (193) fixed to the end of the swing arm (192), the other end of the rotating shaft (191) is fixed with a driven pulley (194), a driving motor (195) is fixed on the support frame (16), a driving pulley (196) is fixed on the output shaft of the driving motor (195), and the driving pulley (196) and the driven pulley (194) are sleeved with a driving belt (197) for driving.

4. The treatment system for landfill leachate according to claim 1, characterized by, The power assembly comprises a power motor (110) and a power gear (111), the power motor (110) is fixedly connected with the outer wall of the tank body (11), the power gear (111) is fixedly connected with the output shaft of the power motor (110), and a driven gear ring (112) is fixed to the top of the filter support (14) and engages with the power gear (111).

5. The treatment system of landfill leachate according to claim 4, characterized in that, The upper end of the liquid inlet (13) is provided with a top mounting groove (131), a top bearing (113) is inserted and fixed in the top mounting groove (131), and the filter support (14) is fixedly connected with the inner ring of the top bearing (113).

6. The treatment system of landfill leachate according to claim 5, characterized in that, The top of the filter support (14) is provided with an outwardly extending support flange (142), and the diameter of the support flange (142) is greater than the inner ring diameter of the top bearing (113).

7. The treatment system of landfill leachate according to claim 6, characterized in that, The bottom of the liquid collecting groove (141) is provided with a vertical through groove (143) penetrating through the liquid collecting groove (141), and the filter screen (15) is fixed in the vertical through groove (143).

8. The treatment system of landfill leachate according to claim 7, characterized in that, A flow guide block (114) is further arranged in the liquid collecting groove (141), and the flow guide block (114) is located at the center of the liquid collecting groove (141).

9. The treatment system of landfill leachate according to claim 8, characterized in that, The wiper plate (17) has a helical structure of the lifting portion (171).

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