Water collecting tank for preventing carbon loss of activated carbon filter
By setting baffles on both sides of the water collection tank of the activated carbon filter to intercept the floating powder activated carbon, the problem of carbon loss during the backwashing of the activated carbon filter is solved, and the prevention of carbon loss and the reduction of water plant operation costs are achieved.
Patent Information
- Application Number
- CN202420324492.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-21
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-02-21
AI Technical Summary
Carbon loss is prone to occur during the backwashing process of activated carbon filters, resulting in an increase in operating costs of water plants.
A water collecting tank is designed, and baffles are provided on both sides of the main body of the water collecting tank. Using the principle that the activated carbon density is less than water, the powder activated carbon floating on the water surface is intercepted to achieve the separation of backwash wastewater and activated carbon.
Effectively prevent carbon loss, reduce the overall operating costs of the water plant, and have certain flexibility and universality.
Smart Images
Figure CN222657863U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of water treatment, and in particular relates to a water collecting tank for preventing carbon loss in an activated carbon filter. Background Art
[0002] The ozone-activated carbon process is one of the mainstream processes for deep treatment of drinking water in China. It is usually composed of an ozone contact tank and an activated carbon filter tank in series. The ozone contact tank is used to oxidize and decompose large molecular organic matter in the water, and at the same time, oxidizes the difficult-to-degrade organic matter into small molecular organic matter, improves its biodegradability, and makes it easier to be adsorbed by activated carbon; the role of the activated carbon filter tank is to use the advantages of the large specific surface area of activated carbon to quickly adsorb dissolved organic matter in the water, and at the same time, gather a large number of aerobic microorganisms in the carbon bed to achieve the degradation of small molecular organic matter.
[0003] Activated carbon filter tanks usually use ordinary rapid filter tanks as the basic tank type. When backwashing is required, the granular activated carbon expands under the action of the backwashing water, and the carbon particles constantly collide and rub against each other, thereby removing the pollutants adhering to the granular activated carbon. The pollutants and backwashing water are mixed to form backwashing wastewater. The backwashing wastewater is collected by the backwashing sump on the top of the filter tank and discharged into the backwashing drainage channel in the center of the filter tank.
[0004] In order to prevent the filter layer from being blocked and reduce the frequency of backwashing, the carbon layer of the activated carbon filter often uses granular activated carbon with a diameter of about 1mm. However, as the carbon filter continues to operate, the granular activated carbon experiences repeated impacts from air and water flows, and its particle size gradually becomes smaller. Its form gradually changes from granular activated carbon to powdered activated carbon, and floats on the surface of the water layer. Under the suction of the water flow at the top of the sump, the powdered activated carbon enters the backwash sump and the backwash drainage channel in turn with the backwash wastewater, causing the loss of activated carbon, which in turn increases the operating costs of the water plant.
[0005] To solve this problem, two approaches can be used:
[0006] (1) From the perspective of operation and maintenance, the backwash intensity is controlled according to factors such as influent water quality, air temperature, carbon particle size, backwash time, etc., and supplemented by regular carbon replenishment measures. This solution is feasible, but the operating cost is high. In addition, the control of backwash intensity usually relies on existing operating experience and is achieved through field tests, which lacks flexibility and universal applicability.
[0007] (2) From the perspective of construction, an activated carbon recovery system for backwash wastewater is designed for the activated carbon filter. Although this solution realizes the recycling of activated carbon, it increases the overall construction cost and system complexity, and puts forward higher requirements for the operation and maintenance of the water plant.
[0008] Therefore, it is necessary to propose a technical solution that can stably prevent carbon loss. Utility Model Content
[0009] In view of the deficiencies in the prior art, the utility model provides a water collection tank for preventing carbon loss in an activated carbon filter, which can solve the problem of carbon loss in the carbon filter during backwashing.
[0010] To achieve the above object, the utility model adopts the following technical scheme: a water collecting tank for preventing carbon loss in an activated carbon filter, comprising a water collecting tank body and baffles arranged on both sides of the water collecting tank body;
[0011] The top of the water collecting trough body is open, the first end of the water collecting trough body is sealed and fixed to the pool wall, and the second end of the water collecting trough body is connected to the drainage channel;
[0012] The baffle is arranged along the length direction of the sump body, and the two ends of the baffle are respectively fixed to the pool wall and the drainage channel. The baffle is arranged at intervals from the sump body, the top of the baffle is higher than the top of the side wall of the sump body, and the bottom of the baffle is lower than the top of the side wall of the sump body, and a water passage is formed between the bottom of the baffle and the side wall of the sump body.
[0013] Preferably, the pool wall and the side wall of the drainage channel are both fixed with slots, and the two ends of the baffle are respectively fixed to the slots on the pool wall and the side wall of the drainage channel.
[0014] Preferably, a vertical strip hole is provided on the side wall of the slot, and a mounting hole is provided on the side wall of the baffle plate. The slot and the baffle plate are fastened and fixed by bolts, and the bolts are inserted into the strip hole and the mounting hole at the same time.
[0015] Preferably, a plurality of the slots are horizontally spaced apart on the pool wall and the side wall of the drainage channel.
[0016] Preferably, the side wall of the water collecting trough body includes a lower folding plate and an upper folding plate, and the lower folding plate and the upper folding plate are arranged along the length direction of the water collecting trough body, the top end of the lower folding plate is sealed and fixed to the bottom end of the upper folding plate, the lower folding plate gradually moves away from the center line of the water collecting trough body from bottom to top, and the upper folding plate gradually approaches the center line of the water collecting trough body from bottom to top, and a water passage is left between the bottom end of the baffle and the upper folding plate.
[0017] Preferably, a first sealing plate is fixed on the pool wall, and the first end of the water collecting tank body is sealed and fixed to the first sealing plate.
[0018] Preferably, a corbel is fixed on the pool wall, the first sealing plate is L-shaped, one side of the first sealing plate is overlapped and fixed on the corbel, and the other side of the first sealing plate is sealed and fixed to the first end of the sump body.
[0019] Preferably, an angle steel is fixed on the pool wall, the first sealing plate is L-shaped, one side of the first sealing plate is overlapped and fixed on the angle steel, and the other side of the first sealing plate is sealed and fixed to the first end of the water collecting tank body.
[0020] Preferably, a hole is provided on the side wall of the drainage channel, and a second sealing plate is fixed on the side wall of the drainage channel, the second sealing plate covers the hole, and a through hole compatible with the water collection tank body is opened on the surface of the second sealing plate, the second end of the water collection tank body extends into the hole through the through hole, the water collection tank body is sealedly connected to the second sealing plate, the second sealing plate is sealedly connected to the side wall of the drainage channel, and the second end of the water collection tank body is open.
[0021] Preferably, a cross brace is provided in the water collecting trough body, and two ends of the cross brace are respectively fixed to the inner walls on both sides of the water collecting trough body.
[0022] Compared with the prior art, the beneficial effects of the utility model are:
[0023] The utility model provides a water collection tank for preventing carbon loss in an activated carbon filter. Baffles are arranged on both sides of the water collection tank body. The principle that the density of activated carbon is less than that of water is utilized. The powdered activated carbon floating on the water surface can be intercepted on the outside of the baffles, thereby achieving separation of backwash wastewater and activated carbon. This can effectively prevent carbon loss, reduce the overall operating cost of the water plant, and has certain flexibility and universality. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 A schematic diagram of a top view of a water collection tank for preventing carbon loss in an activated carbon filter provided by an embodiment of the utility model when in use;
[0025] Figure 2 A schematic cross-sectional structure diagram of a water collection tank for preventing carbon loss in an activated carbon filter provided by an embodiment of the utility model when in use;
[0026] Figure 3 A schematic diagram of a top view of a water collection tank for preventing carbon loss in an activated carbon filter provided by an embodiment of the utility model;
[0027] Figure 4 A schematic diagram of the cross-sectional structure of a water collection tank for preventing carbon loss in an activated carbon filter provided by an embodiment of the utility model;
[0028] Figure 5A schematic diagram of the front view structure of a baffle of a water collection tank for preventing carbon loss in an activated carbon filter provided by an embodiment of the utility model;
[0029] Figure 6 for Figure 3 Schematic diagram of the cross section at AA in the middle;
[0030] Figure 7 for Figure 3 Schematic diagram of the cross section at BB;
[0031] Figure 8 A schematic diagram of the front view structure of a corbel and related parts of a water collecting tank for preventing carbon loss in an activated carbon filter provided by an embodiment of the utility model;
[0032] Fig. 9 The present invention is a front view structural schematic diagram of an angle steel and related parts of a water collection tank for preventing carbon loss in an activated carbon filter provided in an embodiment of the present invention.
[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0034] 1. Water collecting trough body; 2. Pool wall; 3. Drainage channel; 11. First cover plate; 12. Corbel; 13. Angle steel; 14. Hole; 15. Second cover plate; 100. Cross brace; 101. Lower folding plate; 102. Upper folding plate; 152. Baffle; 153. Slot; 1521. Reinforcement rib; 1522. Installation hole. DETAILED DESCRIPTION
[0035] The present invention will be further described in detail below in conjunction with specific embodiments so that those skilled in the art can understand the present invention more clearly.
[0036] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrally formed structure. For ordinary technicians in this field, the specific meanings of such terms in this patent can be understood according to specific circumstances.
[0037] like Figure 1-4 As shown, this embodiment provides a water collection tank for preventing carbon loss in an activated carbon filter, comprising a water collection tank body 1 and baffles 152 arranged on both sides of the water collection tank body 1;
[0038] The water collecting tank body 1 has an opening at the top, a first end of the water collecting tank body 1 is sealed and fixed to a pool wall 2 of the carbon filter tank, and a second end of the water collecting tank body 1 is communicated with a drainage channel 3 in the middle of the carbon filter tank.
[0039] The filter layer of the carbon filter uses granular activated carbon with a diameter of about 1mm. After repeated air and water flushing, powdered activated carbon gradually forms and floats on the water surface. During backwashing, the water level in the filter continues to rise, and the backwashing wastewater eventually passes over the side wall of the water collection tank body 1 and enters the water collection tank body 1, and then flows into the drainage channel 3 for collection. Under the action of the water flow suction force at the top opening of the water collection tank body 1, the powdered activated carbon on the water surface flows into the water collection tank body 1 with the backwashing wastewater, causing carbon loss.
[0040] In order to reduce the carbon loss in the above situation, in this embodiment, the baffle 152 is vertically arranged, and the baffle 152 is arranged along the length direction of the water collecting tank body 1, the two ends of the baffle 152 are respectively fixed to the pool wall 2 and the drainage channel 3, the baffle 152 and the water collecting tank body 1 are arranged at intervals, the top end of the baffle 152 is higher than the top end of the side wall of the water collecting tank body 1, and the bottom end of the baffle 152 is lower than the top end of the side wall of the water collecting tank body 1, and a water passage is formed between the bottom end of the baffle 152 and the side wall of the water collecting tank body 1.
[0041] Since the backwash wastewater flows into the sump body 1 from both sides, and the baffle 152 is set so that the backwash wastewater can only flow under the baffle 152, the powdered activated carbon floating on the water surface will be intercepted on the outside by the baffle 152 during the flow, thereby achieving the separation of the backwash wastewater and the activated carbon, which can effectively prevent the loss of carbon, reduce the overall operating cost of the water plant, and has certain flexibility and universality.
[0042] In this embodiment, the baffle 152 may also be provided with reinforcing ribs 1521 to increase the rigidity of the baffle and improve its durability.
[0043] like Figure 3 As shown, the pool wall 2 and the side wall of the drainage channel 3 are both fixed with a slot 153, and the two ends of the baffle 152 are respectively fixed to the slots 153 on the pool wall 2 and the side wall of the drainage channel 3. The baffle 152 and the slot 153 can be sealed to prevent the activated carbon powder from slipping away from the gap between the baffle 152 and the slot 153.
[0044] It is understandable that the amount and distribution of activated carbon floating on the surface water in the backwash wastewater are related to the current backwash intensity, while the separation effect of the backwash wastewater and the activated carbon is related to the position of the baffle 152.
[0045] Therefore, in order to adjust the height position of the baffle 152, in this embodiment, a vertical strip hole is provided on the side wall of the slot 153, and a mounting hole 1522 is provided on the side wall of the baffle 152. Figure 5As shown, the slot 153 and the baffle 152 are locked and fixed by bolts, and the bolts are inserted into the strip hole and the mounting hole 1522 at the same time. In this way, the bolt can move up and down in the strip hole, and the height position of the bolt can be adjusted, and then the height position of the mounting hole 1522 can be adjusted, that is, the height position of the baffle 152 can be adjusted.
[0046] In order to adjust the horizontal position of the baffle 152, in this embodiment, a plurality of the slots 153 are arranged horizontally on the pool wall 2 and the side wall of the drainage channel 3. Figure 4 , 6 As shown in Figures 7 and 8, six slots 153 are fixedly provided on the side walls of the pool wall 2 and the drainage channel 3, three of which are distributed on each side of the water collecting trough body 1, and are evenly spaced along the horizontal direction close to or away from the water collecting trough body 1. By fixing the baffle 152 to the slots 153 at different positions, the position of the baffle 152 can be adjusted, and then the spacing distance between the baffle 152 and the water collecting trough body 1 can be adjusted.
[0047] When the water flushing intensity is adjusted due to factors such as season, water quality, and operation, the baffle 152 can be installed in the slot 153 at different positions, and the plane position and height of the baffle 152 can be adjusted to adapt to the separation requirements of activated carbon and backwashing wastewater under different backwashing intensities.
[0048] In this embodiment, the side wall of the water collecting tank body 1 includes a lower folding plate 101 and an upper folding plate 102, and the lower folding plate 101 and the upper folding plate 102 are arranged along the length direction of the water collecting tank body 1, and the top of the lower folding plate 101 is sealed and fixed to the bottom of the upper folding plate 102, and the lower folding plate 101 gradually moves away from the center line of the water collecting tank body 1 from bottom to top, and the upper folding plate 102 gradually approaches the center line of the water collecting tank body 1 from bottom to top, and a water passage is left between the bottom end of the baffle 152 and the upper folding plate 102. For example, Figure 6 , 7 As shown, the water collection tank body 1 may include a bottom plate, two lower folding plates 101, two upper folding plates 102 and two top guard plates, the bottom end of the lower folding plate 101 is sealed and fixed to the bottom plate, the top end of the upper folding plate 102 is sealed and fixed to the bottom end of the top guard plate, an opening is formed between the two top guard plates, the two lower folding plates 101 are offset to the outside within 45°, and the two upper folding plates 102 are offset to the inside within 45°.
[0049] It is understandable that the density of activated carbon is less than that of water, and the part of the filter tank that is most prone to carbon loss is the water surface near the top of the water collection tank body 1, and the time when carbon loss is most likely to occur is at the beginning of backwashing. When the carbon filter tank begins to be washed with water, the water level continues to rise, and a large amount of powdered activated carbon is enriched on the surface of the water surface. At this time, the water flow direction below the water collection tank body 1 can be offset to the outside through the lower folding plate 101, gradually away from the top of the water collection tank where carbon loss is most likely to occur; then, under the action of the baffle 152, the backwash wastewater and the activated carbon powder on the surface are separated, and the activated carbon powder on the surface is isolated by the baffle 152 and retained in the filter tank, while the backwash wastewater can enter the water collection tank body 1 through the gap between the baffle 152 and the upper folding plate 102 to be collected; at this time, even if there is still a small amount of activated carbon flowing from under the baffle 152 with the backwash wastewater, it will settle on the upper folding plate 102 and remain in the filter tank.
[0050] Therefore, with the drainage and guiding functions of the upper folding plate 102 and the lower folding plate 101, the separation effect of the baffle 152 can be better.
[0051] like Figure 3 , 6 As shown, a first sealing plate 11 is fixed on the pool wall 2, and the first end of the water collecting tank body 1 is sealed and fixed to the first sealing plate 11. Since the water collecting tank body 1 is usually made of stainless steel and cannot be directly sealed with the pool wall 2, the present embodiment fixes the first sealing plate 11 on the pool wall 2, and the first sealing plate 11 is sealed with the water collecting tank body 1, which makes construction easier.
[0052] For example, if Figure 8 As shown, a corbel 12 may be fixed on the pool wall 2, the first sealing plate 11 is L-shaped, one side of the first sealing plate 11 is overlapped and fixed on the corbel 12, and the other side of the first sealing plate 11 is sealed and fixed to the first end of the water collecting tank body 1; Fig. 9 As shown, an angle steel 13 can be fixed on the pool wall 2, the first sealing plate 11 is L-shaped, one side of the first sealing plate 11 is overlapped and fixed on the angle steel 13, and the other side of the first sealing plate 11 is sealed and fixed to the first end of the water collecting tank body 1.
[0053] In this embodiment, Figure 7-9As shown, a hole 14 is provided on the side wall of the drainage channel 3, and a second sealing plate 15 is fixed on the side wall of the drainage channel 3. The second sealing plate 15 covers the hole 14, and a through hole compatible with the water collecting tank body 1 is opened on the surface of the second sealing plate 15. The second end of the water collecting tank body 1 extends into the hole 14 through the through hole, and the water collecting tank body 1 is sealed and connected to the second sealing plate 15. The second sealing plate 15 is sealed and connected to the side wall of the drainage channel 3, and the second end of the water collecting tank body 1 is open. Similarly, since the water collecting tank body 1 is usually made of stainless steel, it cannot be directly sealed with the side wall of the drainage channel 3. Therefore, in this embodiment, the second sealing plate 15 is fixed on the side wall of the drainage channel 3, and the second sealing plate 15 is sealed and fixed to the water collecting tank body 1, and then the second sealing plate 15 is sealed and fixed to the side wall of the drainage channel 3, which makes construction easier.
[0054] In this embodiment, Figure 3 As shown, a plurality of cross braces 100 are provided in the water collecting trough body 1 , and two ends of the cross braces 100 are respectively fixed to the inner walls of both sides of the water collecting trough body 1 .
[0055] The cross brace 100 can enhance the stability of the inner walls on both sides of the water collecting tank body 1 .
[0056] The mechanisms, components and parts not specifically described in the present invention are all existing structures in the prior art and can be directly purchased from the market.
[0057] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present utility model. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.
[0058] The above is only a preferred embodiment of the utility model, and is not intended to limit the protection scope of the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A water collection tank for preventing carbon loss in an activated carbon filter, characterized in that: It comprises a water collecting tank body (1) and baffles (152) arranged on both sides of the water collecting tank body (1); The water collecting trough body (1) has an opening at the top, a first end of the water collecting trough body (1) is sealed and fixed to the pool wall (2), and a second end of the water collecting trough body (1) is connected to the drainage channel (3); The baffle plate (152) is arranged along the length direction of the water collecting trough body (1), and the two ends of the baffle plate (152) are respectively fixed to the pool wall (2) and the drainage channel (3), and the baffle plate (152) and the water collecting trough body (1) are arranged at intervals, the top end of the baffle plate (152) is higher than the top end of the side wall of the water collecting trough body (1), and the bottom end of the baffle plate (152) is lower than the top end of the side wall of the water collecting trough body (1), and a water passage is formed between the bottom end of the baffle plate (152) and the side wall of the water collecting trough body (1).
2. A water collection tank for preventing carbon loss in an activated carbon filter according to claim 1, characterized in that: The pool wall (2) and the side wall of the drainage channel (3) are both fixed with a clamping groove (153), and the two ends of the baffle (152) are respectively fixed to the clamping groove (153) on the side wall of the pool wall (2) and the drainage channel (3).
3. A water collection tank for preventing carbon loss in an activated carbon filter according to claim 2, characterized in that: A vertical strip hole is provided on the side wall of the clamping slot (153), and a mounting hole (1522) is provided on the side wall of the baffle plate (152). The clamping slot (153) and the baffle plate (152) are fixed by bolts, and the bolts are inserted into the strip hole and the mounting hole (1522) at the same time.
4. A water collection tank for preventing carbon loss in an activated carbon filter according to claim 2, characterized in that: A plurality of the slots (153) are arranged at intervals along the horizontal direction on the pool wall (2) and the side wall of the drainage channel (3).
5. A water collection tank for preventing carbon loss in an activated carbon filter according to claim 1, characterized in that: The side wall of the water collecting trough body (1) comprises a lower folding plate (101) and an upper folding plate (102), the lower folding plate (101) and the upper folding plate (102) are arranged along the length direction of the water collecting trough body (1), the top end of the lower folding plate (101) and the bottom end of the upper folding plate (102) are sealed and fixed, the lower folding plate (101) gradually moves away from the center line of the water collecting trough body (1) from bottom to top, and the upper folding plate (102) gradually moves closer to the center line of the water collecting trough body (1) from bottom to top, and a water passage is left between the bottom end of the baffle (152) and the upper folding plate (102).
6. A water collection tank for preventing carbon loss in an activated carbon filter according to claim 1, characterized in that: A first sealing plate (11) is fixed on the pool wall (2), and the first end of the water collecting tank body (1) is sealed and fixed to the first sealing plate (11).
7. A water collection tank for preventing carbon loss in an activated carbon filter according to claim 6, characterized in that: A corbel (12) is fixed on the pool wall (2); the first sealing plate (11) is L-shaped; one side of the first sealing plate (11) is overlapped and fixed on the corbel (12); and the other side of the first sealing plate (11) is sealed and fixed to the first end of the water collecting tank body (1).
8. A water collection tank for preventing carbon loss in an activated carbon filter according to claim 6, characterized in that: An angle steel (13) is fixed on the pool wall (2); the first sealing plate (11) is L-shaped; one side of the first sealing plate (11) is overlapped and fixed on the angle steel (13); and the other side of the first sealing plate (11) is sealed and fixed to the first end of the water collecting tank body (1).
9. A water collection tank for preventing carbon loss in an activated carbon filter according to claim 1, characterized in that: The side wall of the drainage channel (3) is provided with a hole (14), and a second sealing plate (15) is fixed on the side wall of the drainage channel (3). The second sealing plate (15) covers the hole (14), and a through hole matching the water collecting trough body (1) is opened on the surface of the second sealing plate (15). The second end of the water collecting trough body (1) extends through the through hole into the hole (14), the water collecting trough body (1) is sealedly connected to the second sealing plate (15), and the second sealing plate (15) is sealedly connected to the side wall of the drainage channel (3), and the second end of the water collecting trough body (1) is open.
10. A water collection tank for preventing carbon loss in an activated carbon filter according to claim 1, characterized in that: A cross brace (100) is provided inside the water collecting trough body (1), and two ends of the cross brace (100) are respectively fixed to the inner walls on both sides of the water collecting trough body (1).