Sludge treatment system for refuse landfill

Abstract

The utility model relates to a sludge treatment system for a refuse landfill, which comprises a sludge tank, a sludge adjusting tank, an ultrahigh-pressure filter press, an incinerator, a primary sedimentation tank, a secondary sedimentation tank, an integrated sewage treatment machine and a disinfection box, and the sludge tank, the sludge adjusting tank and the ultrahigh-pressure filter press are sequentially connected through sludge pumps. A sludge outlet of the ultrahigh pressure filter press is connected with the incinerator through a sludge pump, a water outlet of the ultrahigh pressure filter press is connected with the primary sedimentation tank through a water pump, a water outlet of the primary sedimentation tank is connected with a water inlet of the secondary sedimentation tank through a water pump, and a water outlet of the secondary sedimentation tank is connected with a water inlet of the integrated sewage treatment machine through a water pump. A water outlet of the integrated sewage treatment machine is connected with a water inlet of the disinfection box through a water pump, and sludge discharge ports of the primary sedimentation tank and the secondary sedimentation tank are connected with a sludge tank through a sludge pump. The sludge treatment device is small in occupied area and good in sludge treatment effect.

Description

Technical Field

[0001] The utility model relates to the field of sludge treatment, in particular to a landfill sludge treatment system. Background Art

[0002] At present, the sludge in the landfill is almost saturated. As environmental protection requirements become more and more stringent, the sludge in the landfill needs to be further treated to reduce the amount of sludge. The sludge in the landfill has a high water content and is generally directly dehydrated and then treated with sewage. The sludge and sewage treatment process requires a lot of equipment, which is generally placed directly on the ground, occupying a large area. The sludge needs to be screened before dehydration to isolate large pieces of sludge, so a separate screening equipment is required, which further increases the area occupied. Summary of the invention

[0003] The utility model aims to solve the deficiencies of the prior art and provides a landfill sludge treatment system.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a landfill sludge treatment system, including a sludge pool, a sludge regulating tank, an ultra-high pressure filter press, an incinerator, a primary sedimentation tank, a secondary sedimentation tank, an integrated sewage treatment machine, and a disinfection tank. The sludge pool, the sludge regulating tank, and the ultra-high pressure filter press are connected in sequence through a sludge pump, the sludge outlet of the ultra-high pressure filter press is connected to the incinerator through the sludge pump, the drain outlet of the ultra-high pressure filter press is connected to the primary sedimentation tank through a water pump, the water outlet of the primary sedimentation tank is connected to the water inlet of the secondary sedimentation tank through a water pump, and the water outlet of the secondary sedimentation tank is connected to the water outlet of the secondary sedimentation tank. The inlet is connected to the water inlet of the integrated sewage treatment machine through a water pump, the outlet of the integrated sewage treatment machine is connected to the water inlet of the disinfection box through a water pump, the sludge outlets of the primary sedimentation tank and the secondary sedimentation tank are connected to the sludge tank through a sludge pump, the sludge regulating tank and the primary sedimentation tank are respectively provided with acid or alkali addition ports, the secondary sedimentation tank is provided with a PAC addition port, a screening mechanism and a crushing mechanism are provided in the sludge tank, the primary sedimentation tank is arranged on the top of the secondary sedimentation tank, the disinfection box is arranged around the outer wall of the secondary sedimentation tank, a stirring mechanism is provided in the primary sedimentation tank and the secondary sedimentation tank, and a disinfection mechanism is provided in the disinfection box.

[0005] In particular, a plurality of partitions are provided between the inner walls on both sides of the sludge pool, and the partitions divide the sludge pool into a plurality of sludge chambers. The screening mechanism includes a screen, and rotating shafts are provided at both ends of the screen, and are rotatably connected between the inner walls on both sides of the sludge chamber through the rotating shafts. The rotating shaft on the same side of the screen passes through the sludge pool, and a belt is driven between the two adjacent rotating shaft ends. A first support plate is provided on the outer wall of the sludge pool, and a first motor that drives a rotating shaft to rotate is installed on the first support plate.

[0006] In particular, the crushing mechanism includes a crushing shaft, which is rotatably connected to the lower part of the inner wall on both sides of the sludge chamber. A plurality of pairs of crushing blades are arranged on the crushing shaft. The crushing blades are located below the screen and do not contact the screen. The crushing shaft passes through the sludge pool on the same side, and the passing ends of two adjacent crushing shafts are driven by a belt. A second support plate is arranged on the outer wall of the sludge pool, and a second motor is installed on the second support plate to drive a crushing shaft to rotate.

[0007] In particular, a cover plate is provided on the top of the first sedimentation tank, and the stirring mechanism includes a third motor and a stirring shaft. The stirring shaft passes through and is rotatably connected to the center of the first sedimentation tank and the second sedimentation tank. The third motor is arranged on the cover plate and drives the stirring shaft to rotate. The stirring shaft is respectively provided with L-shaped scrapers that contact the inner wall and bottom wall of the first sedimentation tank and the second sedimentation tank. The stirring shaft is respectively provided with stirring rods connected to the vertical parts of the corresponding L-shaped scrapers, and the stirring rods are provided with a plurality of pairs of stirring blades.

[0008] Particularly, a movable cover is provided at one end of the cover plate.

[0009] In particular, a plurality of disinfection chambers are arranged from top to bottom inside the disinfection box, water guide holes are staggered at the bottoms of two adjacent disinfection chambers, a clean water outlet is arranged on the lowest disinfection chamber, the disinfection mechanism includes an ultraviolet lamp, a plurality of mounting holes are evenly distributed on the circumference of the disinfection chamber away from the secondary sedimentation tank, a plurality of ultraviolet lamps are evenly distributed radially on the circumference of the disinfection chamber, and a mounting sleeve is provided at one end of the ultraviolet lamp, which is threadedly connected to the mounting hole.

[0010] The beneficial effects of the utility model are as follows: the utility model arranges a screening mechanism and a crushing mechanism in the sludge pool, thereby facilitating the screening out and crushing of large pieces of sludge, achieving good sludge pretreatment effect, integrating screening and crushing with the sludge pool, and reducing the floor space; the utility model arranges the primary sedimentation tank and the secondary sedimentation tank in an up-and-down manner, thereby reducing the floor space, and the arrangement of the stirring mechanism enables a good additive mixing effect, and the arrangement of the L-shaped scraper facilitates the cleaning of the inner wall of the pool; the utility model arranges the disinfection box on the outer wall of the secondary sedimentation tank, thereby further reducing the floor space, disinfecting the treated clean water, reducing safety hazards, and the ultraviolet lamp is easy to disassemble and assemble, and is convenient for maintenance and replacement; the utility model has a good sludge treatment effect, and the sludge and sewage are easy to reuse after treatment, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a system block diagram of the utility model;

[0012] Figure 2 This is a schematic diagram of the sludge pool structure of the utility model;

[0013] Figure 3 This is a schematic diagram of the structure of the pulverizing mechanism of the utility model;

[0014] Figure 4It is a schematic diagram of the connection between the primary sedimentation tank and the secondary sedimentation tank of the utility model;

[0015] Figure 5 for Figure 4 The enlarged schematic diagram at A in the middle;

[0016] In the figure: 1-sludge tank; 101-partition; 102-sludge chamber; 103-screen; 104-first support plate; 105-first motor; 106-crushing shaft; 107-crushing blade; 108-second motor; 109-second support plate; 2-sludge regulating tank; 3-ultra-high pressure filter press; 4-incinerator; 5-primary sedimentation tank; 501-third motor; 502-stirring shaft; 503-stirring rod; 504-stirring blade; 505-L-shaped scraper; 6-secondary sedimentation tank; 7-integrated sewage treatment machine; 8-disinfection box; 801-disinfection chamber; 802-water guide hole; 803-ultraviolet lamp; 804-installation sleeve;

[0017] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0019] like Figure 1-Figure 5 As shown, a landfill sludge treatment system includes a sludge tank 1, a sludge regulating tank 2, an ultra-high pressure filter press 3, an incinerator 4, a primary sedimentation tank 5, a secondary sedimentation tank 6, an integrated sewage treatment machine 7, and a disinfection box 8. The sludge tank 1, the sludge regulating tank 2, and the ultra-high pressure filter press 3 are connected in sequence through a sludge pump, the sludge discharge port of the ultra-high pressure filter press 3 is connected to the incinerator 4 through a sludge pump, the water discharge port of the ultra-high pressure filter press 3 is connected to the primary sedimentation tank 5 through a water pump, the water outlet of the primary sedimentation tank 5 is connected to the water inlet of the secondary sedimentation tank 6 through a water pump, the water outlet of the secondary sedimentation tank 6 is connected to the water inlet of the integrated sewage treatment machine 7 through a water pump, the water outlet of the integrated sewage treatment machine 7 is connected to the water inlet of the disinfection box 8 through a water pump, and the sludge discharge ports of the primary sedimentation tank 5 and the secondary sedimentation tank 6 are connected to the sludge tank 1 through a sludge pump;

[0020] The sludge regulating tank 2 and the primary sedimentation tank 5 are respectively provided with acid or alkali addition ports, and the secondary sedimentation tank 6 is provided with a PAC addition port. A screening mechanism and a crushing mechanism are provided in the sludge tank 1. A plurality of partitions 101 are provided between the inner walls on both sides of the sludge tank 1, and the partitions 101 divide the sludge tank 1 into a plurality of sludge chambers 102. The screening mechanism includes a screen 103. A rotating shaft is provided at both ends of the screen 103, and the screen 103 is rotatably connected between the inner walls on both sides of the sludge chamber 102 through the rotating shaft. The rotating shaft on the same side of the screen 103 passes through the sludge tank 1, and the passing ends of two adjacent rotating shafts are driven by a belt. A first supporting plate 104 is provided on the outer wall of the sludge tank 1. A first motor 105 driving a rotating shaft is installed on the first support plate 104; the pulverizing mechanism includes a pulverizing shaft 106, which is rotatably connected to the lower part of the inner wall on both sides of the sludge chamber 102, and a plurality of pairs of pulverizing blades 107 are provided on the pulverizing shaft 106, and the pulverizing blades 107 are located below the screen 103 and do not contact the screen 103. The pulverizing shaft 106 passes through the sludge pool 1 on the same side, and the passing ends of two adjacent pulverizing shafts 106 are driven by a belt. A second support plate 109 is provided on the outer wall of the sludge pool 1, and a second motor 108 driving a pulverizing shaft 106 to rotate is installed on the second support plate 109;

[0021] Specifically, the sludge is put into the sludge pool 1, screened by the screen 103, and then the sludge is pumped into the sludge adjustment tank 2 by the sludge pump. After a period of use, the first motor 105 is started to drive the screen 103 to flip 180 degrees, and the trapped large sludge is flipped to the bottom, and then the second motor 108 is started, and the crushing blade 107 crushes the large sludge, and then it can be pumped away by the sludge pump. The screening mechanism and the crushing mechanism are integrated with the sludge pool 1 to reduce the floor space. The crushed sludge can optimize the dehydration performance, and the fine and uniform sludge particles are conducive to improving the efficiency of subsequent dehydration operations. Whether it is through mechanical dehydration (such as belt filter pressing, centrifugal dehydration) or natural drying, better dehydration effect can be achieved, thereby reducing the water content of the final sludge and reducing transportation and disposal costs.

[0022] The primary sedimentation tank 5 is arranged on the top of the secondary sedimentation tank 6, and the disinfection box 8 is arranged around the outer wall of the secondary sedimentation tank 6. The primary sedimentation tank 5, the secondary sedimentation tank 6, and the disinfection box 8 are integrated into one body to reduce the floor space. A stirring mechanism is arranged in the primary sedimentation tank 5 and the secondary sedimentation tank 6. A cover plate is arranged on the top of the primary sedimentation tank 5, and a movable cover is arranged at one end of the cover plate. The stirring mechanism includes a third motor 501 and a stirring shaft 502. The stirring shaft 502 is rotatably connected to the center of the primary sedimentation tank 5 and the secondary sedimentation tank 6. The third motor 501 is arranged on the cover plate and drives the stirring shaft 502 to rotate. The stirring shaft 502 is respectively provided with L-shaped scrapers 505 in contact with the inner wall and bottom wall of the primary sedimentation tank 5 and the secondary sedimentation tank 6. The stirring shaft 502 is respectively provided with stirring rods 503 connected to the vertical parts of the corresponding L-shaped scrapers 505, and the stirring rods 503 are provided with a plurality of pairs of stirring blades 504;

[0023] Specifically, acid or alkali is added to the primary sedimentation tank 5 to adjust the pH value, and PAC is added to the secondary sedimentation tank 6 to cause the impurities in the sewage to flocculate and precipitate. During this period, the stirring shaft 502 rotates under the action of the third motor 501 to fully mix the additive and the sewage. The L-shaped scraper 505 can also scrape off the impurities attached to the inner wall.

[0024] A disinfection mechanism is provided in the disinfection box 8; a plurality of disinfection chambers 801 are provided from top to bottom inside the disinfection box 8, water guide holes 802 are staggered at the bottom of two adjacent disinfection chambers 801, a clean water outlet is provided on the lowest disinfection chamber 801, the disinfection mechanism includes an ultraviolet lamp 803, a plurality of mounting holes are evenly distributed on the circumference of the disinfection chamber 801 away from the secondary sedimentation tank 6, a plurality of ultraviolet lamps 803 are evenly distributed radially on the circumference in the disinfection chamber 801, and a mounting sleeve 804 is provided at one end of the ultraviolet lamp 803, and the mounting sleeve 804 is threadedly connected to the mounting hole;

[0025] Specifically, the clean water obtained after the sewage is treated by the integrated sewage treatment machine 7 enters the disinfection box 8 for disinfection. The clean water flows back and forth in each disinfection chamber 801. During the flow, it is disinfected and sterilized by the ultraviolet lamp 803, and then discharged into the water circulation system for reuse or discharged into the surrounding municipal sewage network. When the disinfection box 8 is not in use, the ultraviolet lamp 803 can be unscrewed and removed for maintenance or replacement.

[0026] When the utility model is working, the landfill sludge is screened by the screening mechanism in the sludge pool 1, the large particles of sludge are crushed by the crushing mechanism, the screened sludge is pumped into the sludge adjustment tank 2 by the sludge pump, the acidity and alkalinity of the sludge are measured, and according to the detected acidity and alkalinity, the corresponding amount of acid or alkali is added to control the acidity and alkalinity of the sludge within a suitable range; the sludge with adjusted acidity and alkalinity enters the ultra-high pressure filter press 3 for dehydration, and the dehydrated sludge is sent to the incinerator 4 of the thermal power plant for treatment; the sewage filtered out by the ultra-high pressure filter press 3 enters a The primary sedimentation tank 5 detects the acidity and alkalinity of the sewage, and adds acid or alkali according to the acidity and alkalinity of the sewage to adjust its pH value so that its pH value is within an appropriate range; the sewage after pH adjustment enters the secondary sedimentation tank 6, and then PAC (polyaluminium chloride) is added. The clean water of the secondary sedimentation tank enters the integrated sewage treatment machine 7, and after different levels of filtration and different types of membrane treatment, the treated clean water enters the disinfection box 8 for disinfection. The sludge precipitated in the primary sedimentation tank 5 and the secondary sedimentation tank 6 is discharged into the sludge tank 1 for re-dehydration treatment. The disinfected clean water re-enters the water circulation system and is used again, or discharged into the surrounding municipal sewage pipe network.

[0027] The utility model is convenient for screening out large pieces of sludge and crushing them, and has a good sludge pretreatment effect. The screening and crushing are integrated with the sludge tank, and the floor space is reduced. The primary sedimentation tank 5 and the secondary sedimentation tank 6 are stacked up and down to reduce the floor space, and the setting of the stirring mechanism makes the additive mixing effect good. The setting of the L-shaped scraper 505 is convenient for cleaning the inner wall of the tank. The disinfection box 8 is set on the outer wall of the secondary sedimentation tank 6 to further reduce the floor space, disinfect the treated clean water, reduce safety hazards, and the ultraviolet lamp 803 is easy to disassemble and assemble, and is convenient for maintenance and replacement. The utility model has a good sludge treatment effect, and the sludge and sewage are easy to reuse after treatment, and is easy to use.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A landfill sludge treatment system, characterized in that: The invention comprises a sludge pool (1), a sludge regulating tank (2), an ultra-high pressure filter press (3), an incinerator (4), a primary sedimentation tank (5), a secondary sedimentation tank (6), an integrated sewage treatment machine (7), and a disinfection box (8). The sludge pool (1), the sludge regulating tank (2), and the ultra-high pressure filter press (3) are connected in sequence through a sludge pump. The sludge discharge port of the ultra-high pressure filter press (3) is connected to the incinerator (4) through the sludge pump. The drainage port of the ultra-high pressure filter press (3) is connected to the primary sedimentation tank (5) through a water pump. The water outlet of the primary sedimentation tank (5) is connected to the water inlet of the secondary sedimentation tank (6) through a water pump. The water outlet of the secondary sedimentation tank (6) is connected to the integrated sewage treatment machine (7) through a water pump. ), the water outlet of the integrated sewage treatment machine (7) is connected to the water inlet of the disinfection box (8) through a water pump, the sludge outlets of the primary sedimentation tank (5) and the secondary sedimentation tank (6) are connected to the sludge tank (1) through a sludge pump, the sludge regulating tank (2) and the primary sedimentation tank (5) are respectively provided with acid or alkali addition ports, the secondary sedimentation tank (6) is provided with a PAC addition port, a screening mechanism and a crushing mechanism are provided in the sludge tank (1), the primary sedimentation tank (5) is arranged on the top of the secondary sedimentation tank (6), the disinfection box (8) is arranged around the outer wall of the secondary sedimentation tank (6), a stirring mechanism is provided in the primary sedimentation tank (5) and the secondary sedimentation tank (6), and a disinfection mechanism is provided in the disinfection box (8).

2. A landfill sludge treatment system according to claim 1, characterized in that: A plurality of partitions (101) are provided between the inner walls on both sides of the sludge pool (1), and the partitions (101) divide the sludge pool (1) into a plurality of sludge chambers (102). The screening mechanism comprises a screen (103). Rotating shafts are provided at both ends of the screen (103), and the screen is rotatably connected between the inner walls on both sides of the sludge chamber (102) through the rotating shafts. The rotating shafts on the same side of the screen (103) pass through the sludge pool (1), and the passing ends of two adjacent rotating shafts are driven by belts. A first supporting plate (104) is provided on the outer wall of the sludge pool (1), and a first motor (105) for driving a rotating shaft to rotate is installed on the first supporting plate (104).

3. A landfill sludge treatment system according to claim 2, characterized in that: The pulverizing mechanism comprises a pulverizing shaft (106), the pulverizing shaft (106) being rotatably connected to the lower part of the inner wall on both sides of the sludge chamber (102), a plurality of pairs of pulverizing blades (107) being arranged on the pulverizing shaft (106), the pulverizing blades (107) being located below the screen (103) and not in contact with the screen (103), the pulverizing shaft (106) passing through the sludge pool (1) on the same side, and the passing ends of two adjacent pulverizing shafts (106) being driven by a belt, a second support plate (109) being arranged on the outer wall of the sludge pool (1), and a second motor (108) for driving one pulverizing shaft (106) to rotate being installed on the second support plate (109).

4. A landfill sludge treatment system according to claim 1, characterized in that: A cover plate is provided on the top of the primary sedimentation tank (5), and a stirring mechanism comprises a third motor (501) and a stirring shaft (502). The stirring shaft (502) penetrates and is rotatably connected to the center of the primary sedimentation tank (5) and the secondary sedimentation tank (6). The third motor (501) is arranged on the cover plate and drives the stirring shaft (502) to rotate. The stirring shaft (502) is respectively provided with L-shaped scrapers (505) in contact with the inner wall and bottom wall of the primary sedimentation tank (5) and the secondary sedimentation tank (6). The stirring shaft (502) is respectively provided with stirring rods (503) connected to the vertical parts of the corresponding L-shaped scrapers (505), and the stirring rods (503) are provided with a plurality of pairs of stirring blades (504).

5. A landfill sludge treatment system according to claim 4, characterized in that: A movable cover is arranged at one end of the cover plate.

6. A landfill sludge treatment system according to claim 1, characterized in that: A plurality of disinfection chambers (801) are arranged from top to bottom in the disinfection box (8), water guide holes (802) are arranged alternately at the bottom of two adjacent disinfection chambers (801), a clean water outlet is arranged on the bottom disinfection chamber (801), the disinfection mechanism comprises an ultraviolet lamp (803), a plurality of mounting holes are evenly arranged on the circumference of the disinfection chamber (801) away from the secondary sedimentation tank (6), the plurality of ultraviolet lamps (803) are evenly arranged radially on the circumference in the disinfection chamber (801), and a mounting sleeve (804) is arranged at one end of the ultraviolet lamp (803), and the mounting sleeve (804) is threadedly connected to the mounting hole.

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