Settling filter for purifying tap water in laboratory

Abstract

The invention discloses a settling filter for purifying tap water in a laboratory. The settling filter comprises a mixing tank and a settling filter assembly, the liquid inlet end of the mixing tank is connected with a laboratory tap water pipeline, and the liquid outlet end is connected with the water inlet end of the settling filter tank assembly through a pipeline; the mixing tank is further connected with a flocculating agent adding assembly through a pipeline, the sedimentation filter tank assembly comprises a long-strip-shaped tank body, a suspended filter bed, a plurality of rows of inclined plates distributed in parallel at intervals and a plurality of sedimentation hoppers are sequentially arranged in the tank body from top to bottom, and sludge discharge ports of the sedimentation hoppers are connected with a sludge treatment assembly through pipelines. A water inlet and a water outlet are formed in the tank body, the water inlet is located between the inclined plate and the precipitation hopper, the water outlet is located above the filter bed, and the water outlet is connected with a clear water treatment assembly through a pipeline. The device is compact in structure, can effectively improve the purification efficiency of tap water in a laboratory, is stable in water outlet, and effectively solves the problems of hardening and blockage of a filter bed.

Description

Technical Field

[0001] The present application relates to the technical field of water treatment, and in particular to a sedimentation and filtration tank for purifying laboratory tap water. Background Art

[0002] In a laboratory environment, tap water usually needs to undergo rigorous purification treatment to meet experimental requirements. Traditional tap water purification systems often include multiple independent processing units, such as sedimentation tanks and filters, which means that the sedimentation and filtration steps are often performed separately, which not only increases the equipment footprint, but also increases the complexity and maintenance cost of the system. In addition, traditional sedimentation and filtration methods have many challenges in terms of treatment efficiency, effluent water quality stability, and filter bed maintenance.

[0003] In particular, traditional sand filters and cloth filters are prone to bed compaction and clogging, which affects filtration efficiency and water quality stability, and requires frequent backwashing and maintenance. At the same time, sedimentation tanks also have certain difficulties in sludge discharge and sludge treatment, and are prone to accumulating a large amount of sludge, affecting the purification effect and the normal operation of the equipment. Summary of the invention

[0004] In order to solve at least one of the above-mentioned technical problems, the present application provides a sedimentation and filtration tank for laboratory tap water purification. Through the integrated sedimentation and filtration design, combined with the dual functions of filter bed filtration and sedimentation bucket sludge discharge, it achieves the effects of strong resistance to impact loads and stable water output; at the same time, a light filter material is used to form a suspended filter bed, which effectively solves the problems of filter bed compaction and blockage, improves the filtration efficiency and maintenance convenience, and has a small footprint, simple operation, and strong operability.

[0005] The present application provides a sedimentation and filtration tank for laboratory tap water purification, comprising a mixing tank and a sedimentation and filtration tank assembly; the liquid inlet end of the mixing tank is connected to the laboratory tap water pipeline, and the liquid outlet end is connected to the water inlet end of the sedimentation and filtration tank assembly through the pipeline; the mixing tank is also connected to a flocculant dosing assembly through the pipeline, and the sedimentation and filtration tank assembly comprises an elongated tank body, in which a suspended filter bed, a plurality of rows of inclined plates distributed in parallel and spaced relation, and a plurality of sedimentation hoppers are sequentially arranged from top to bottom in the tank body, the sludge discharge port of the sedimentation hopper is connected to a sludge treatment assembly through a pipeline, and a water inlet and a water outlet are provided on the tank body, the water inlet is located between the inclined plate and the sedimentation hopper, the water outlet is located above the filter bed, and the water outlet is connected to a clean water treatment assembly through a pipeline.

[0006] Optionally, the flocculant dosing component includes a flocculant storage tank, the flocculant storage tank is connected to the mixing tank via a flocculant delivery pipeline, and a flocculant dosing pump is provided on the flocculant delivery pipeline.

[0007] Optionally, an agitator is installed in the mixing tank.

[0008] Further optionally, there are multiple flocculant delivery pipelines, and each flocculant delivery pipeline is provided with a flocculant dosing pump.

[0009] Optionally, the filter bed includes light filter material and a filter plate for preventing the light filter material from floating up.

[0010] Optionally, the inclined plates are arranged in two rows, and the inclination directions of the upper and lower rows of inclined plates are opposite.

[0011] Optionally, there are two water inlets, and the two water inlets are respectively opened on two opposite side walls of the pool body.

[0012] Optionally, a water-permeable cover is provided in the pool body along the pool length or pool width direction, the water-permeable cover is sealed with the pool body, the water inlet is located in the water-permeable cover, a plurality of water-permeable holes are opened on the water-permeable cover, and a water inlet groove is formed between the water-permeable cover and the pool body.

[0013] Optionally, the clean water treatment component includes a clean water tank, the clean water tank is provided with a backwash pipeline, and the backwash pipeline is provided with a backwash pump.

[0014] Optionally, the sludge treatment component includes a sludge tank, the sludge tank is connected to the sedimentation bucket via a sludge conveying pipeline, and a sludge discharge pump is provided on the sludge conveying pipeline.

[0015] In summary, the present application includes at least one of the following beneficial technical effects:

[0016] 1. This application adopts an integrated sedimentation and filtration type, that is, by integrating sedimentation and filtration into one pool body, the floor space is greatly reduced, so that not only the structure is more compact, but also through reasonable layout and design, it realizes efficient tap water purification function, which is suitable for laboratories and other occasions that require high-quality water sources.

[0017] 2. The design of this application simplifies the operating process, reduces manual intervention and maintenance costs. In particular, the use of a suspended filter bed effectively avoids the problems of filter bed compaction and clogging, thereby reducing the backwashing frequency and maintenance workload.

[0018] 3. This application realizes efficient sedimentation and filtration functions, and the effluent water quality is stable and reliable. At the same time, the design of the inclined plate and sedimentation bucket contributes to the rapid sedimentation of particles and the effective discharge of sludge, further improving the purification efficiency.

[0019] 4. This application is conducive to the realization of intelligent control, such as water quality monitoring, flow regulation and sludge discharge cycle control, etc., with low control requirements and simple maintenance.

[0020] 5. The design of this application is highly flexible, has a wide range of applications, and is highly operable. It can be flexibly adjusted according to the specific needs of the laboratory, such as adjusting the material of the light filter material, the inclination angle of the inclined plate, and the number of sedimentation buckets, etc., to meet the requirements of different water quality and processing volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of this application;

[0022] Figure 2 This is a schematic diagram of the structure of the sedimentation and filtration tank component part in Example 2 of the present application;

[0023] In the figure: 1, mixing tank, 11, agitator, 2, sedimentation filter assembly, 21, tank body, 22, variable diameter, 3, flocculant dosing assembly, 31, flocculant storage tank, 32, flocculant dosing pump, 4, filter bed, 41, light filter material, 42, filter plate, 5, inclined plate, 6, sedimentation hopper, 7, clean water treatment assembly, 71, clean water tank, 72, backwash pump, 8, permeable cover, 81, permeable hole, 9, sludge treatment assembly, 91, sludge tank, 92, sludge pump. DETAILED DESCRIPTION

[0024] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] like Figure 1 As shown, the present application designs a sedimentation and filtration tank for laboratory tap water purification, including a mixing tank 1 and a sedimentation and filtration tank assembly 2. The liquid inlet end of the mixing tank 1 is connected to the laboratory tap water pipeline, and the liquid outlet end is connected to the water inlet end of the sedimentation and filtration tank assembly 2 through the pipeline. The mixing tank 1 is also connected to a flocculant dosing assembly 3 through the pipeline.

[0026] The sedimentation and filtration tank assembly 2 includes a long strip tank body 21. The tank body 21 is provided with a suspended filter bed 4, a plurality of rows of parallel and spaced inclined plates 5, and a plurality of sedimentation hoppers 6 in sequence from top to bottom. The mud discharge port of the sedimentation hopper 6 is connected to the sludge treatment assembly 9 through a pipeline. The tank body 21 is provided with a water inlet and a water outlet, the water inlet is located between the inclined plate 5 and the sedimentation hopper 6, the water outlet is located above the filter bed 4, and the water outlet is connected to the clean water treatment assembly 7 through a pipeline.

[0027] like Figure 1 As shown, in the optimization scheme of the present application, the clean water treatment component 7 includes a clean water tank 71, the clean water tank 71 is provided with a backwashing pipeline, and the backwashing pipeline is provided with a backwashing pump 72. By equipping the backwashing system, the filtering performance of the filter bed 4 and the effluent water quality are maintained.

[0028] like Figure 1As shown, in the optimization scheme of the present application, the sludge treatment component 9 includes a sludge pool 91, and the sludge pool 91 is connected to the sedimentation bucket 6 through a sludge conveying pipeline. A sludge discharge pump 92 is provided on the sludge conveying pipeline to facilitate regular sludge discharge and improve operational convenience.

[0029] The operating principle of this application is as follows:

[0030] 1. Water inlet and mixing

[0031] The laboratory tap water enters the mixing tank 1 through the liquid inlet end. At the same time, an appropriate amount of flocculant (such as polyaluminium chloride, polyacrylamide, etc.) is added into the mixing tank 1 through the flocculant adding component 3. After the tap water and the flocculant are fully mixed, a mixed liquid containing tiny flocs is formed.

[0032] 2. Flocculation and precipitation

[0033] The mixed liquid enters the water inlet end of the sedimentation tank assembly 2 through the pipeline. Since the water inlet is located between the inclined plate 5 and the sedimentation hopper 6, the mixed liquid first enters the inclined plate area; the design of the inclined plate 5 helps to increase the water flow path and slow down the water flow speed, so that the tiny floccules have enough time to collide with impurities such as suspended matter and colloids in the water to form larger floccules, and settle down to the bottom of the sedimentation hopper 6 along the inclined plate 5 under the action of gravity; the sedimentation hopper 6 collects the settled sludge and discharges the sludge regularly through the sludge discharge port and the sludge treatment assembly 9;

[0034] 3. Filter

[0035] After the water has settled in the inclined plate area, it enters the suspended filter bed 4, which can effectively remove the remaining suspended matter, colloids and some organic matter in the tap water;

[0036] 4. Water discharge

[0037] The clean water filtered by the filter bed 4 enters the clean water tank 71 of the clean water treatment component 7 through the water outlet, and finally, the purified water is supplied to the laboratory through the pipeline;

[0038] 5. Backwashing and maintenance

[0039] In order to maintain the filtering performance of the filter bed 4, or when the effluent quality decreases, the backwash pump 72 is started to clean the filter bed 4 through the backwash pipeline; at the same time, the inclined plate 5, the sedimentation bucket 6 and other components are regularly inspected and maintained to ensure the normal operation of the system.

[0040] The following are examples of the present application:

[0041] Example 1

[0042] The main part of the filtration tank for laboratory tap water purification in this embodiment is consistent with the above-mentioned basic design of the present application.

[0043] The flocculant dosing assembly 3 of this embodiment includes a flocculant storage tank 31, which is connected to the mixing tank 1 through a flocculant delivery pipeline, and a flocculant dosing pump 32 is provided on the flocculant delivery pipeline. Various flocculants that are easy to purchase, such as polyaluminium chloride and polyacrylamide, can be installed in the flocculant storage tank 31. The flocculant in the flocculant storage tank 31 is pumped into the mixing tank 1 through the flocculant dosing pump 32, which is not only simple to operate, but also convenient to control the dosage.

[0044] The mixing tank 1 of this embodiment is equipped with an agitator 11 to promote the full mixing of tap water and flocculant to ensure the purification effect and efficiency of tap water.

[0045] In this embodiment, two flocculant delivery pipelines are provided, and each flocculant delivery pipeline is provided with a flocculant dosing pump 32 to improve dosing efficiency.

[0046] Example 2

[0047] like Figure 2 As shown, the structure of this embodiment is basically similar to that of embodiment 1, except that the sedimentation and filtration tank assembly 2 is further optimized in design.

[0048] The filter bed 4 of this embodiment includes a light filter material 41 and a filter plate 42 for preventing the light filter material 41 from floating. The light filter material 41 has a specific gravity less than 1 and has good suspension and filtration performance. It forms a dynamic filtration layer under the action of water flow, thereby effectively removing impurities in the water after sedimentation and effectively solving the problem of filter bed compaction and clogging.

[0049] The light filter material 41 of this embodiment is plastic beads. In practical applications, the light filter material 41 can also be plastic balls, fiber balls, EPS foam filter beads, or ceramsite with optimized / specially treated particle size and density.

[0050] In this embodiment, the inclined plates 5 are arranged in two rows, and the inclined directions of the upper and lower rows of inclined plates 5 are opposite, which is helpful for the sedimentation of floccules / particles.

[0051] In this embodiment, there are two water inlets, which are respectively provided on two opposite side walls of the pool body 21; a water-permeable cover 8 is provided inside the pool body 21 along the pool length direction, the water-permeable cover 8 is sealed and connected to the pool body 21, the water inlet is located inside the water-permeable cover 8, a plurality of water-permeable holes 81 are provided on the water-permeable cover 8, and a water inlet groove is formed between the water-permeable cover 8 and the pool body 21. Thus, it can not only greatly reduce the impact force of water entering the pool body 21, improve the impact load resistance of the pool body 21, effectively prevent the sludge in the sedimentation hopper 6 from being disturbed and floating, and reduce the breakage of floccules, but also help to evenly distribute the water flow, thereby further improving the purification efficiency and effect.

[0052] The cross-section of the water-permeable cover 8 of the present embodiment is semicircular. In practical applications, the cross-section of the water-permeable cover 8 may also be V-shaped or other shapes. It should be noted that the position of the water-permeable hole 81 is higher than the water inlet, and the multiple water-permeable holes 81 are preferably spaced in sequence and evenly arranged in the middle of the water-permeable cover 8 along the length of the pool to facilitate uniform distribution of water flow.

[0053] Example 3

[0054] The structure of this embodiment is basically similar to that of Embodiment 2, except that the cell body 21 is further optimized in design.

[0055] like Figure 2 As shown, the upper part of the pool body 21 of this embodiment is provided with a diameter change 22, that is, the width of the upper part of the pool body 21 is smaller than the width of the lower part. When water flows from bottom to top, due to the effect of the diameter change 22, the cross-sectional area of ​​the water flow changes from large to small. According to the principle of conservation of fluid flow, it can be known that water will flow through the filter bed 4 at a higher speed, and finally flow out from the water outlet to the clean water pool 71, thereby further improving the purification efficiency.

[0056] In this application, the devices and components whose structures are not described are all commercially available devices or components.

[0057] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sedimentation and filtration tank for laboratory tap water purification, characterized in that: The invention comprises a mixing tank (1) and a sedimentation tank assembly (2); the liquid inlet end of the mixing tank (1) is connected to a laboratory tap water pipeline, and the liquid outlet end is connected to the water inlet end of the sedimentation tank assembly (2) through a pipeline; the mixing tank (1) is also connected to a flocculant dosing assembly (3) through a pipeline; the sedimentation tank assembly (2) comprises a long strip tank body (21); a suspended filter bed (4), a plurality of rows of inclined plates (5) distributed in parallel and at intervals, and a plurality of sedimentation hoppers (6) are sequentially arranged in the tank body (21) from top to bottom; the mud discharge port of the sedimentation hopper (6) is connected to a sludge treatment assembly (9) through a pipeline; a water inlet and a water outlet are provided on the tank body (21); the water inlet is located between the inclined plate (5) and the sedimentation hopper (6); the water outlet is located above the filter bed (4); and the water outlet is connected to a clean water treatment assembly (7) through a pipeline.

2. A sedimentation and filtration tank for laboratory tap water purification according to claim 1, characterized in that: The flocculant dosing component (3) comprises a flocculant storage tank (31), the flocculant storage tank (31) is connected to the mixing tank (1) via a flocculant delivery pipeline, and a flocculant dosing pump (32) is provided on the flocculant delivery pipeline.

3. A sedimentation and filtration tank for laboratory tap water purification according to claim 1 or 2, characterized in that: The mixing tank (1) is provided with a stirrer (11).

4. A sedimentation and filtration tank for laboratory tap water purification according to claim 2, characterized in that: There are multiple flocculant delivery pipelines, and each flocculant delivery pipeline is provided with a flocculant dosing pump (32).

5. A sedimentation and filtration tank for laboratory tap water purification according to claim 1, characterized in that: The filter bed (4) comprises light filter material (41) and a filter plate (42) for preventing the light filter material (41) from floating.

6. A sedimentation and filtration tank for laboratory tap water purification according to claim 1, characterized in that: The inclined plates (5) are arranged in two rows, and the inclined directions of the upper and lower rows of inclined plates (5) are opposite.

7. A sedimentation and filtration tank for laboratory tap water purification according to claim 1, characterized in that: There are two water inlets, and the two water inlets are respectively opened on two opposite side walls of the pool body (21).

8. A sedimentation and filtration tank for laboratory tap water purification according to claim 1 or 7, characterized in that: A water-permeable cover (8) is arranged inside the pool body (21) along the pool length or pool width direction, the water-permeable cover (8) is sealedly connected to the pool body (21), the water inlet is located inside the water-permeable cover (8), a plurality of water-permeable holes (81) are opened on the water-permeable cover (8), and a water inlet groove is formed between the water-permeable cover (8) and the pool body (21).

9. A sedimentation and filtration tank for laboratory tap water purification according to claim 1, characterized in that: The clean water treatment component (7) comprises a clean water tank (71), the clean water tank (71) is provided with a backwash pipeline, and the backwash pipeline is provided with a backwash pump (72).

10. A sedimentation and filtration tank for laboratory tap water purification according to claim 1, characterized in that: The sludge treatment component (9) comprises a sludge pool (91), wherein the sludge pool (91) is connected to a sedimentation hopper (6) via a sludge conveying pipeline, and a sludge discharge pump (92) is provided on the sludge conveying pipeline.

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