Tail water sludge treatment system for waterworks

Abstract

The invention provides a waterworks tail water sludge treatment system which comprises a shell, a filtering mechanism, a flushing mechanism and a drying mechanism, and the shell is constructed to be provided with a filtering area, a water storage area and a sludge drying area; the filtering mechanism comprises a first filtering plate, a second filtering plate and a vibration device which are obliquely and downwards arranged in a staggered mode, and the first filtering plate comprises a first filtering plate body with one end hinged to the filtering area, a baffle installed above the first filtering plate body and a supporting frame abutting against the lower portion of the first filtering plate body; the vibration device is mounted on the first filter plate and can drive the first filter plate to swing up and down around a hinge point of the first filter plate. The first filter plate body is driven by the vibration device to swing up and down around the hinge point, so that the water content of sludge can be effectively reduced, local overload is avoided, and the filtering capacity of the whole filter plate is fully utilized. By arranging the baffle on the first filter plate, the retention time of the sludge can be prolonged, and the water filtering effect is better.

Description

Technical Field

[0001] The present invention relates to the technical field of sludge treatment devices, and particularly to a tail water sludge treatment system for a waterworks. Background Art

[0002] The conventional treatment process of a waterworks is "coagulation - sedimentation - filtration - disinfection". During the coagulation treatment process, a certain amount of production tail water is generated, accounting for about 5% - 10% of the total water production of the waterworks. The tail water contains a large amount of suspended solids and solid particles, which mainly come from sediment, algae, and other insoluble impurities in the raw water. If directly discharged without treatment, it will not only cause secondary pollution to the water body of the water source, but also the re - deposition of a large amount of suspended solids will have an adverse impact on the water level and sediment ecology of rivers and lakes.

[0003] The existing tail water sludge treatment equipment for waterworks mainly treats sludge by filtration. During the filtration process, sludge is prone to accumulate on the filter screen, resulting in the filter screen being filled up. This will not only reduce the filtration efficiency, but also affect the normal operation of the equipment. To ensure the filtration effect, multiple filter screens are usually required to filter alternately, which undoubtedly increases the complexity of the equipment and the inconvenience of operation. To solve the problem of filter screen blockage, some equipment attempts to use vibration to vibrate the filter screen, thereby increasing the filtration efficiency. However, this method also has obvious defects. Although vibration can prevent the filter screen from being blocked, it will cause the sludge to pass through the filter screen faster, thereby increasing the water content of the sludge. This not only affects the dehydration effect of the sludge, but also may bring difficulties to subsequent treatment and disposal. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a tail water sludge treatment system for a waterworks, which can effectively reduce the water content of sludge and reduce the risk of blockage.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] The present invention provides a tail water sludge treatment system for a waterworks, including:

[0007] A housing, the housing is configured to have a filtration area, a water storage area, and a sludge drying area. The filtration area is used for filtering the tail water sludge of the waterworks. The filtration area has a feed port. The water storage area and the sludge drying area are respectively connected to the filtration area and are respectively used for collecting the filtered water and sludge;

[0008] Filter mechanism, the filter mechanism includes a first filter plate, a second filter plate and a vibration device. The first filter plate and the second filter plate are arranged obliquely downward and staggered on the filtration area. The first filter plate includes a first filter plate body with one end hinged on the filtration area and a gap for sludge to pass between the other end and the filtration area, a baffle installed above the first filter plate body, and a support frame abutted below the first filter plate body. The second filter plate is located below the first filter plate and can guide the sludge thereon to the sludge drying area. The vibration device is installed on the first filter plate and can drive the first filter plate to swing up and down around its hinge point;

[0009] Flushing mechanism, the flushing mechanism includes a water pump and a delivery pipe. The input end of the water pump extends into the water storage area, and the output end is connected to the delivery pipe. The output end of the delivery pipe extends into the filtration area and is located above the first filter plate; and,

[0010] Drying mechanism, the drying mechanism includes a delivery device for delivering the sludge in the sludge drying area outward and a heating device arranged on the sludge drying area.

[0011] Preferably, there are a plurality of the baffles arranged at intervals on the first filter plate body.

[0012] In some embodiments, there are 2 to 4 of the baffles.

[0013] Preferably, the plurality of the baffles are staggered and arranged on the front and back sides of the first filter plate body.

[0014] Preferably, the baffle is arranged obliquely downward from top to bottom.

[0015] Preferably, the included angle between the first filter plate body and the horizontal plane is 25° to 35°.

[0016] Preferably, the second filter plate includes a second filter plate body fixedly connected to the filtration area, a guide plate connected to the lower end of the second filter plate body and obliquely downward extending into the sludge drying area, and a limiting plate fixedly connected to the guide plate and obliquely upward extending.

[0017] Further preferably, the included angle between the second filter plate body and the horizontal plane is 25° to 35°.

[0018] Further preferably, the included angle between the guide plate and the horizontal plane is greater than the included angle between the second filter plate body and the horizontal plane.

[0019] Preferably, the delivery device is located below the second filter plate, and it includes two driving rollers rotatably arranged in the sludge drying area, a conveyor belt wound around the outside of the two driving rollers, and a motor for driving the driving rollers to rotate.

[0020] Preferably, the heating device includes heating tubes arranged at intervals along the conveying direction of the conveyor belt inside the conveyor belt.

[0021] Preferably, a plurality of drain holes communicating with the water storage area are formed at the bottom of the filtering area.

[0022] Preferably, a feed hopper is installed at the feed inlet of the filtering area.

[0023] Preferably, the sludge drying area and the water storage area are respectively arranged on the left and right sides of the filtering area.

[0024] Preferably, a pressure relief valve is provided in the sludge drying area.

[0025] Preferably, a diverter is connected to the output end of the conveying pipe.

[0026] Due to the application of the above technical solutions, the present invention has the following advantages compared with the prior art:

[0027] By hinging the first filter plate in the filtering area and driving the first filter plate to swing up and down around its hinge point through the vibration device, the present invention can effectively reduce the water content of the sludge, and at the same time break the adhesion force between the sludge particles thereon, guide the sludge particles to different parts of the first filter plate, avoid local overload, and make full use of the filtering capacity of the entire filter plate. By arranging baffles on the first filter plate, the residence time of the sludge can be extended, and the water filtering effect is better.

[0028] The sludge treatment system of the present invention can also introduce the filtered water into the filtering area to wash the filter plate, increase the sludge flow rate while avoiding blockage of the filter holes of the filter plate; the filtered sludge can be dried in the sludge drying area for subsequent treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic structural diagram of a tail water sludge treatment system for a waterworks provided in Embodiment 1;

[0030] Figure 2 A top view of a tail water sludge treatment system for a waterworks provided in Embodiment 1;

[0031] Figure 3 For Figure 2 A sectional view taken along the plane A-A;

[0032] Figure 4 For Figure 2 Another sectional view taken along the plane A-A at another angle;

[0033] Figure 5 A front view of a tail water sludge treatment system for a waterworks provided in Embodiment 1;

[0034] Figure 6 is Figure 5 A sectional view taken along the B - B plane;

[0035] Among them, 1. Housing; 11. Filtration area; 111. Feed hopper; 112. Drain hole; 12. Water storage area; 13. Sludge drying area; 131. Pressure relief valve;

[0036] 2. First filter plate; 21. First filter plate body; 22. Baffle; 23. Support frame;

[0037] 3. Second filter plate; 31. Second filter plate body; 32. Guide plate; 33. Limiting plate;

[0038] 4. Conveying device; 41. Conveyor belt; 42. Driving roller; 43. Motor;

[0039] 5. Heating pipe;

[0040] 6. Flushing mechanism; 61. Water pump; 62. Delivery pipe; 63. Shunt. Detailed implementation manners

[0041] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0042] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", etc. are Figure 1 defined based on the shown orientation. It is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the embodiments of the present invention.

[0043] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0044] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0045] The following disclosure provides many different embodiments or examples for implementing different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the embodiments of the present invention. In addition, the embodiments of the present invention may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0046] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0047] A tail water sludge treatment system for a waterworks, as Figures 1 to 6 shown, which includes a housing 1, a filtering mechanism, a flushing mechanism 6 and a drying mechanism.

[0048] The housing 1 is configured to have a filtering area 11, a water storage area 12 and a sludge drying area 13. The filtering area 11 is used for filtering the tail water sludge of the waterworks and has a feed inlet. Preferably, a feed hopper 111 is installed on the feed inlet to facilitate feeding. The water storage area 12 is connected to the filtering area 11 and is used for collecting filtered water. Specifically, a plurality of drain holes 112 may be opened at the bottom of the filtering area 11, and the drain holes 112 are connected to the water storage area 12. The sludge drying area 13 is connected to the filtering area 11 and is used for collecting the filtered sludge. In this embodiment, the sludge drying area 13 and the water storage area 12 are respectively arranged on the left and right sides of the filtering area 11.

[0049] The filtering mechanism includes a first filter plate 2, a second filter plate 3 and a vibration device.

[0050] The first filter plate 2 includes a first filter plate body 21 which is arranged obliquely downward and one end of which is hinged on the filter area 11, a baffle 22 installed above the first filter plate body 21, and a support frame 23 abutting against the bottom of the first filter plate body 21. Among them, the first filter plate body 21 is covered with filter holes for filtering the tailwater sludge of the water plant. There is a gap between the other end of the first filter plate body 21 and the filter area 11. When the sludge falls from the feed inlet position to the first filter plate body 21 and moves downward along the extension direction of the first filter plate body 21, it can fall into the second filter plate 3 below through the gap for secondary filtration. The angle between the first filter plate body 21 and the horizontal plane is 25° to 35°. In this embodiment, the angle between the first filter plate body 21 and the horizontal plane is 30°. The inclined filter plate can improve the filtration efficiency, improve material transportation, and reduce energy consumption. The baffle 22 has a plurality of baffles arranged at intervals on the first filter plate body 21, and the plurality of baffles 22 are preferably arranged alternately on the front and rear sides of the first filter plate body 21. In this embodiment, there are two baffles 22, which are arranged obliquely from top to bottom. By arranging the baffles 22, the residence time of the sludge on the first filter plate body 21 can be prolonged, and the water filtering effect is better.

[0051] The vibration device is installed on the first filter plate 2, specifically, it can be installed on the first filter plate body 21 or the support frame 23, and is used to drive the first filter plate body 21 to swing up and down around its hinge point. The present invention drives the first filter plate body 21 to swing up and down around its hinge point through the vibration device. The swing amplitude is larger than the vibration amplitude of directly fixing the first filter plate body 21 on the filter area 11, and the water is more easily thrown out instantly, thereby effectively reducing the water content of the sludge; and it can also break the adhesion between the sludge particles thereon, guide the sludge particles to different parts of the first filter plate body 21, avoid local overload, and make full use of the filtering capacity of the entire first filter plate 2. In addition, since the first filter plate body 21 can move with the vibration of the vibration device, stress concentration is reduced and the service life of the first filter plate body 21 is extended. The vibration device refers to the vibrator in the field and will not be described in detail.

[0052] The second filter plate 3 is inclined downward and arranged staggered with the first filter plate 2 in the filtration area 11, and can guide the sludge thereon to the sludge drying area 13. The second filter plate 3 includes a second filter plate body 31 fixedly connected to the filtration area 11, a material guiding plate 32 connected to the lower end of the second filter plate body 31 and inclined downward and extending into the sludge drying area, and a limiting plate 33 fixedly connected to the material guiding plate 32 and inclined upward. Among them, the second filter plate body 31 is covered with filter holes, and the aperture of the filter holes on the second filter plate body 31 is preferably less than or equal to the aperture of the filter holes on the first filter plate body 21. The included angle between the second filter plate body 31 and the horizontal plane is 25° to 35°. In this embodiment, the included angle between the second filter plate body 31 and the horizontal plane is 30°. The included angle between the material guiding plate 32 and the horizontal plane is greater than the included angle between the second filter plate body 31 and the horizontal plane, and at least a part of it extends to the sludge drying area 13.

[0053] The flushing mechanism 6 includes a water pump 61 and a delivery pipe 62. The input end of the water pump 61 extends into the water storage area 12, the output end is connected to the delivery pipe 62, the output end of the delivery pipe 62 extends into the filtration area 11 and is located above the first filter plate 2, and a diverter 63 is connected to the output end of the delivery pipe 62. Through the flushing mechanism 6, the water in the water storage area 12 can be introduced into the filtration area 11 to flush the first filter plate 2, increasing the sludge flow rate while avoiding clogging of the filter holes of the filter plate, and realizing the reuse of filtered water at the same time.

[0054] The drying mechanism includes a conveying device 4 for conveying the sludge in the sludge drying area 13 outward and a heating device arranged on the sludge drying area 13. The conveying device 4 is located below the second filter plate 3, specifically below the material guiding plate 32. The conveying device 4 includes two driving rollers 42 rotatably arranged in the sludge drying area 13, a conveyor belt 41 wound around the outer sides of the two driving rollers 42, and a motor 43 for driving the driving rollers 42 to rotate. The conveyor belt 41 is preferably made of a metal material with good flexibility. The motor 43 is fixedly connected to the outer surface of the sludge drying area 13, and a heat insulation plate (not shown in the figure) is arranged between it and the sludge drying area 13. The heating device includes heating pipes 5 arranged at intervals along the conveying direction of the conveyor belt 41 inside the conveyor belt 41. The filtered sludge can be dried in the sludge drying area 13 for subsequent treatment. A pressure relief valve 131 is provided in the sludge drying area 13.

[0055] Working principle:

[0056] The tail water sludge of the waterworks flows in from the feed hopper 111, enters the filtration area 11 through the feed port and falls onto the first filter plate body 21. The vibration device drives the first filter plate body 21 to swing up and down around its hinge point. After the sludge is filtered on the first filter plate body 21, it falls onto the second filter plate body 31 below for secondary filtration, and finally enters the conveyor belt 41 in the sludge drying area 13 through the guide plate 32. Driven by the motor 43, the driving roller 42 drives the conveyor belt 41 to move. At the same time, the heating device dries the sludge on the conveyor belt 41, and the dried sludge comes out from the discharge port of the sludge drying area 13. The filtered water flows from the drain hole 112 at the bottom of the filtration area 11 to the water storage area 12, is sent into the delivery pipe 62 by the water pump 61, and finally flows onto the first filter plate 2 through the diverter 63 to wash the first filter plate 2.

[0057] The above has made a detailed description of the present invention. The purpose is to enable those skilled in this field to understand the content of the present invention and implement it. However, it should not be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A tail water sludge treatment system for a waterworks, characterized in that, Comprising: A housing (1), which is configured to have a filtration area (11), a water storage area (12) and a sludge drying area (13). The filtration area (11) is used for filtering the tail water sludge of a water treatment plant. The filtration area (11) has a feed inlet. The water storage area (12) and the sludge drying area (13) are respectively communicated with the filtration area (11) and are respectively used for collecting the filtered water and sludge. A filtration mechanism, which includes a first filter plate (2), a second filter plate (3) and a vibration device. The first filter plate (2) and the second filter plate (3) are arranged obliquely downward and staggered on the filtration area (11). The first filter plate (2) includes a first filter plate body (21) with one end hinged to the filtration area (11) and a gap for sludge to pass between the other end and the filtration area (11), a baffle (22) installed above the first filter plate body (21), and a support frame (23) abutted below the first filter plate body (21). The second filter plate (3) is located below the first filter plate (2). The second filter plate (3) can guide the sludge thereon to the sludge drying area (13). The vibration device is installed on the first filter plate (2) and can drive the first filter plate body (21) to swing up and down around its hinge point. A flushing mechanism (6), which includes a water pump (61) and a delivery pipe (62). The input end of the water pump (61) extends into the water storage area (12), and the output end is connected to the delivery pipe (62). The output end of the delivery pipe (62) extends into the filtration area (11) and is located above the first filter plate (2); and A drying mechanism, which includes a delivery device (4) for outwardly delivering the sludge in the sludge drying area (13) and a heating device provided on the sludge drying area (13).

2. The tail water sludge treatment system of the waterworks according to claim 1, characterized in that The baffle (22) has a plurality of them arranged at intervals on the first filter plate body (21).

3. The tail water sludge treatment system for waterworks according to claim 2, wherein The plurality of baffles (22) are arranged staggered on the front and rear sides of the first filter plate body (21); and / or The baffle (22) is inclined downward from top to bottom.

4. The tap water plant tail water sludge treatment system according to claim 1, characterized in that The angle between the first filter plate body (21) and the horizontal plane is 25° - 35°.

5. The tail water sludge treatment system of a waterworks according to claim 1, characterized in that The second filter plate (3) includes a second filter plate body (31) fixedly connected to the filtration area (11), a guide plate (32) connected to the lower end of the second filter plate body (31) and obliquely extending downward into the sludge drying area (13), and a limiting plate (33) fixedly connected to the guide plate (32) and obliquely extending upward.

6. The tail water sludge treatment system of a waterworks according to claim 5, characterized in that, The angle between the second filter plate body (31) and the horizontal plane is 25° - 35°; and / or The angle between the guide plate (32) and the horizontal plane is greater than the angle between the second filter plate body (31) and the horizontal plane.

7. The tap water plant tail water sludge treatment system according to claim 1, characterized in that, The conveying device (4) is located below the second filter plate (3), and comprises two driving rollers (42) rotatably arranged in the sludge drying area (13), a conveyor belt (41) wound around the outside of the two driving rollers (42), and a motor (43) for driving the driving rollers (42) to rotate. The heating device comprises heating tubes (5) arranged at intervals along the conveying direction of the conveyor belt (41) inside the conveyor belt (41).

8. The tap water plant tail water sludge treatment system according to claim 1, characterized in that, A plurality of water discharge holes (112) communicating with the water storage area (12) are formed in the bottom of the filtering area (11); and / or, A feed hopper (111) is installed at the feed inlet of the filtering area (11); and / or, The sludge drying area (13) and the water storage area (12) are respectively arranged on the left and right sides of the filtering area (11).

9. The tap water plant tail water sludge treatment system according to claim 1, characterized in that, A pressure relief valve (131) is provided in the sludge drying area (13).

10. The tail water sludge treatment system for a waterworks according to claim 1, wherein, The output end of the conveying pipe (62) is connected with a diverter (63).

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