Water purification device

Abstract

According to the embodiment of the utility model, the utility model provides a water purifying device which comprises a coagulant adding unit, a flocculation mixing reaction unit, a separation and precipitation unit and a sludge discharge unit, and the coagulant adding unit is used for storing medicaments; the flocculation mixing reaction unit is communicated with the coagulant adding unit and a pipeline for conveying a mud-water mixture, and comprises a mixer and a reaction pipeline connected with the mixer; the separation and precipitation unit comprises a coarse precipitation area and a fine precipitation area, and the coarse precipitation area comprises a flow guide unit and a discharge pipe arranged below the flow guide unit; the fine settling zone comprises a water inlet channel, a separating and settling zone comprising a plurality of separating pipes, a drainage zone and a collecting zone which is arranged below the separating and settling zone and is used for collecting sludge; the sludge discharging unit is communicated with the collecting area and is used for discharging sludge out of the water purifying device. The water purifying device can separate gravel, sludge and water in the river sediment, so that the ecological environment of a riverbed can be reserved, and meanwhile, the muddy water can be subjected to certain dehydration treatment.

Description

Technical Field

[0001] The present disclosure relates to the field of water treatment, and more specifically, to a water purification device. Background Art

[0002] In water bodies such as rivers, lakes, and reservoirs, the mud and silt in the bottom mud have the greatest impact on the environment and are the source of endogenous pollution in rivers. Bottom mud elution technology usually includes physical elution, chemical elution, and biological elution. Centrifuge is a commonly used physical elution method, but the centrifuge has poor mud separation effect, and the natural sedimentation efficiency is too low.

[0003] The sediment washing device is mainly composed of a hull and an underwater operation part that runs in an integrated manner with the hull. In order to process the sediment, the hull needs to be moved frequently, and the flocculation separation and natural sedimentation effects are relatively poor. In addition, the sediment after the mud and water separation needs to be temporarily stored in the hull, so the hull needs a higher load, which is not suitable for operation in narrow waters such as urban rivers and urban landscapes, and requires high energy consumption. Utility Model Content

[0004] In order to solve at least one of the above technical problems, according to one aspect of the present disclosure, a water purification device is provided, which includes a coagulant dosing unit, a flocculation mixing reaction unit, a separation sedimentation unit and a sludge discharge unit, wherein the coagulant dosing unit stores a reagent; the flocculation mixing reaction unit is connected to the coagulant dosing unit and a pipeline for conveying a mud-water mixture, and includes a reaction pipeline; the separation sedimentation unit includes a coarse sedimentation area and a fine sedimentation area, wherein the coarse sedimentation area includes a diversion unit and a discharge pipe arranged below the diversion unit; the fine sedimentation area includes a separation sedimentation area with a plurality of separation pipes and a collection area for collecting sludge arranged below the separation sedimentation area; the sludge discharge unit is connected to the collection area to discharge the sludge from the water purification device. The water purification device can separate sand and gravel from sludge through the coarse sedimentation area and discharge the sand and gravel back to the river channel, which is beneficial to retaining the ecological environment of the riverbed on the one hand, and can ensure the safe operation of the subsequent sludge dewatering device on the other hand. The water purification device can also achieve preliminary separation of water and sludge through the fine sedimentation area, and dehydrate the mud water to a certain extent.

[0005] According to one aspect of the water purification device of the present disclosure, optionally, the guide unit of the rough sedimentation zone includes a plurality of guide plates staggered and arranged downward from top to bottom. The staggered and downwardly inclined guide plates can slow down the water flow speed and help materials with larger specific gravity such as sand and gravel to settle downward along the guide plates.

[0006] According to one aspect of the water purification device of the present disclosure, optionally, the angles between the plurality of guide plates and the cavity walls on which they are installed and the horizontal distances between the plurality of guide plates and the adjacent cavity walls in their respective extension directions gradually increase with the direction of water flow. The increased angle makes it easier for the substances on the guide plates to slide off, and the increased horizontal distance gradually increases the area of ​​the water flow channel and gradually slows down the flow rate, thereby facilitating the separation of different substances under the action of the two.

[0007] According to the water purification device of one aspect of the present disclosure, optionally, the separation sedimentation area of ​​the fine sedimentation area also includes a plurality of mud slides, and the plurality of separation tubes are arranged between adjacent mud slides, and the lower part of each separation tube has a separation port connected to the mud slide, and the plurality of separation tubes are in a horizontal direction. A plurality of small separation tubes are arranged in the cross-sectional area of ​​the water inlet channel, so that the water flow area is large and the flow rate is slow. The water flows in each separation tube are independent of each other and do not affect each other. The mud and water are more easily separated through a single separation tube, and the separation efficiency is higher. The sludge passes through the separation port and falls into the mud slide, realizing the separation of mud and water.

[0008] According to one aspect of the water purification device of the present disclosure, optionally, the coarse sedimentation area and the fine sedimentation area are arranged at the same height, and water flows from the coarse sedimentation area into the fine sedimentation area via the same-path water distribution method. The same-path water distribution method makes the water flow more uniform and improves the mud-water separation effect.

[0009] According to a water purifier according to one aspect of the present disclosure, optionally, at least a portion of the reaction pipeline is arranged at the lower part of the water purifier, arranged along the length direction of the water purifier and bent and changed direction multiple times. In the limited space of the water purifier, the reaction pipeline is extended by bending and changing direction, thereby extending the flocculation reaction time and improving the flocculation effect.

[0010] According to a water purification device of one aspect of the present disclosure, optionally, the mud discharge unit includes a mud discharge pump, a plurality of mud discharge pipes and a mud discharge valve corresponding to each mud discharge pipe, the mud discharge valves are opened in turn, and the mud discharge unit also includes a pipe connected to the flocculation mixing reaction unit. Through the plurality of mud discharge pipes and the mud discharge valves opened in turn, each collection bucket in the collection area can have a certain sludge collection time, further reducing the water content of the sludge. In addition, in order to increase the flocculation speed, a small amount of sludge discharged from the mud discharge unit can also be returned to the flocculation mixing reaction unit to increase the number of flocs.

[0011] According to the water purification device of one aspect of the present disclosure, optionally, the separation and sedimentation unit further comprises a drainage area, which comprises an S-shaped water flow channel formed by a plurality of partitions. The water flow channel thus arranged can slow down the water flow rate and increase the processing time of the separation and sedimentation area.

[0012] According to one aspect of the present disclosure, the water purification device is optionally installed on the hull. The water purification device can realize the function of a floating control platform, can cooperate with the underwater dredging device to operate on the water surface, and the staff can also supervise and control the operation of the underwater dredging device to deal with emergencies in a timely manner.

[0013] According to the water purification device of one aspect of the present disclosure, optionally, the coagulant dosing unit includes a cartridge, a metering pump and a valve.

[0014] The water purification device of the utility model can achieve higher mud-water separation efficiency on a ship body of limited size and is used for bottom mud treatment of various water bodies.

[0015] It is not necessary to achieve all the advantages described above at the same time for any device implementing the present disclosure. Other features and advantages of the present disclosure will be described in the subsequent description embodiments, and partly become apparent from the description embodiments, or be understood by implementing the present disclosure. The purposes and advantages of the embodiments of the present disclosure can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure, but are not intended to limit the present disclosure.

[0017] Figure 1 is a schematic structural diagram of a water purification device according to an embodiment of the present disclosure;

[0018] Figure 2 is a top view of a water purification device according to an embodiment of the present disclosure;

[0019] Figure 3 yes Figure 1 AA cross-sectional view of the water purification device shown;

[0020] Figure 4 yes Figure 3 A magnified view of region B in FIG. 1 ; and

[0021] Figure 5 It is a schematic diagram of water flow of a water purification device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. The various different embodiments can be combined with each other to form other embodiments not shown in the following description. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0023] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the present disclosure belongs. The words "first", "second" and similar words used in the patent application specification and claims of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not necessarily indicate a quantity restriction. Words such as "include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] Figure 1 A schematic structural diagram of a water purification device according to an embodiment of the present disclosure is shown. Figure 2 1 is a top view of a water purification device according to an embodiment of the present disclosure. The water purification device can be arranged on a ship hull so as to float on a river channel. Figure 3 yes Figure 1 The AA cross-sectional view of the water purification device shown. The water purification device includes a coagulant addition unit 10, a flocculation mixing reaction unit 20, a separation sedimentation unit 30 and a mud discharge unit 40 in sequence along the water flow direction of the water treatment process. The water purification device may also include other parts such as a control unit (not shown).

[0025] The coagulant dosing unit 10 may include a pipeline system for quantitatively dosing coagulant, which includes a cartridge for storing the agent, a metering pump, a valve for controlling the dosing of the coagulant, etc. The coagulant dosing unit 10 is used to control and adjust the dosing of the coagulant.

[0026] The flocculation mixing reaction unit 20 is connected to the coagulant dosing unit 10 and the pipeline for conveying the mud-water mixture of the bottom sludge, and promotes the rapid mixing and diffusion of the flocculant and the mud-water mixture through the turbulent disturbance to flocculate into small flocs. The flocculation mixing reaction unit 20 includes a pipeline, which may optionally include a mixer 21, such as a pipeline with a spiral blade, under the action of which a strong turbulence is generated, and the mud-water mixture extracted from the bottom of the water is quickly mixed and diffused with the coagulant. The mixer 21 is connected to the reaction pipeline 22. The reaction pipeline 22 makes full use of the space of the device to extend its length, and through multiple bending and changing directions (for example, a coil can be used), the flocculation mixing reaction time is extended and the mixing reaction intensity is increased to enhance the flocculation effect. For example, at least a portion of the reaction pipeline 22 can be arranged below the water purification device, and the length of the reaction pipeline is increased by extending in the length direction of the water purification device and bending back and forth multiple times. In order to increase the flocculation speed, a small amount of sludge discharged from the mud discharge unit can also be returned to the flocculation mixing reaction unit to increase the number of flocs.

[0027] The separation and sedimentation unit 30 separates the flocculated water from the mud and water. The separation and sedimentation unit 30 is connected to the outlet of the flocculation mixing reaction unit 20. The separation and sedimentation unit 30 is divided into a relatively independent coarse sedimentation zone 31 and a fine sedimentation zone 32 by a partition along the water flow direction. The coarse sedimentation zone 31 can separate and precipitate relatively heavy materials such as sand and gravel in the mud and water mixture, and the fine sedimentation zone 32 can separate and precipitate relatively light materials such as floccules in the mud and water mixture. The coarse sedimentation zone 31 includes an inlet channel 311, and a plurality of staggered guide plates 312 are arranged at the end of the inlet channel 311 from top to bottom. The water flow enters from above the guide plate, and the plurality of guide plates 312 can be arranged to form a water flow channel arranged approximately in an S shape (such as Figure 1 As shown). Each guide plate 312 is arranged at a certain inclination, and its downwardly inclined end is at a certain distance from the cavity wall to form a water flow channel. Optionally, the inclination angle a of the guide plate 312 and the horizontal distance L from the adjacent cavity wall in the extension direction gradually increase with the direction of the water flow, wherein the inclination angle a is the angle between the guide plate and the longitudinal cavity wall connected to it. Figure 1 It can be seen that with the downward water flow direction, the slope angle a of the guide plate 312 and the distance L from the cavity wall gradually increase. This setting can not only prolong the sedimentation time, but also facilitate the separation effect. The increase in the slope angle a makes it easier for the material on the guide plate 312 to slide off, and the increase in the distance L can gradually increase the area of ​​the water flow channel and gradually slow down the flow rate, which is conducive to the separation of different substances under the action of the two. In addition, the discharge pipe 313 can be set at the bottom of the coarse sedimentation area, and the discharge pipe 313 is controlled by a valve to regularly discharge the precipitated sediment into the water body.

[0028] like Figure 1As shown, the same-path water distribution method can be adopted from the coarse sedimentation zone 31 to the fine sedimentation zone 32 to make the water distribution more uniform. The fine sedimentation zone can be arranged at the same height as the coarse sedimentation zone, and the water flows transversely through the coarse sedimentation zone 31 and the fine sedimentation zone 32 in sequence. After passing through the guide plate 312, the water flows from bottom to top into the water inlet channel 321 of the fine sedimentation zone 32. A separation sedimentation zone 322 is provided at the rear end of the water inlet channel 321. A drainage area 323 is provided at the rear end of the separation sedimentation zone 322. A collection area 324 is provided on the lower side of the separation sedimentation zone 322. The separation sedimentation zone 322 includes a plurality of sludge troughs 3221 arranged evenly and obliquely, and a plurality of small separation tubes 3222 (such as Figure 3 ). Figure 3 It can be seen from the cross-sectional view that multiple small separation tubes 3222 are distributed throughout the entire cross-sectional area of ​​the separation and sedimentation zone, making the water flow area large and the flow rate slow. A separation port 3223 connected to the mud slide trough is set at the bottom of each small separation tube. The water entering the water inlet channel 321 flows through multiple small separation tubes 3222, and the flow rate slows down due to the large water flow area. This setting allows the water to flow through each separation tube 3222 and cannot enter the mud slide trough 3221. At the same time, the water bodies in different separation tubes 3222 are independent of each other and do not affect each other. The mud and water are easier to separate through a single separation tube 3222, and the mud and water are very little affected by the water flow during the separation process, making the mud and water separation efficiency very high. The separated mud falls into the mud slide trough 3221 and enters the collection area 324, and is no longer affected by the water flow. The mud is not disturbed during the sedimentation process, and as the mud and water stay in the separation tube in the fine sedimentation zone for a longer time, the water will become cleaner and cleaner. Figure 4 Shows Figure 3 A magnified view of area B in the middle, where arrows indicate the lateral mud and water sedimentation pattern.

[0029] The collection area 324 is preferably divided into several collection buckets, which can be bucket-shaped, such as conical and other shapes that are conducive to mud aggregation. The outlet of the fine sedimentation area is placed at the upper part of the fine sedimentation area to ensure that the water outlet also adopts the same water distribution method. The drainage area 323 can be formed by several partitions to form an approximately S-shaped water flow channel to avoid interruption of flow and extend the residence time of water flow in the separation sedimentation area 322. The outlet can be a zigzag shape or other shapes that can disperse the water flow, increase the contact between the water body and the air, and facilitate the oxygenation of the water body. The water flow is discharged into the surrounding water body through the outlet.

[0030] The mud discharge unit 40 transports the separated mud from the water purification device to an external device through a pipeline for transportation or to a subsequent mud dehydration device for further dehydration. The mud discharge unit 40 includes a mud discharge mechanism connected to the collection bucket of each collection area 324 and a mud discharge pump 41 connected to the end of the mud discharge mechanism. The mud discharge mechanism includes one or more mud discharge pipes 42 ( Figure 2The control valve 43 is arranged on each mud discharge pipe 42. Optionally, each mud discharge pipe may correspond to a collecting bucket, and the control valve may control the opening and closing of each mud discharge pipe individually. Optionally, by controlling the opening and closing of each mud discharge pipe in turn, each collecting bucket has a certain amount of sludge collection time, so that the moisture content of the sludge discharged by the mud discharge pump 41 is lower.

[0031] The operation process of the water purification device is described below. The mud and water mixture extracted by the underwater robot or other river treatment mechanism enters the water purification device. The coagulant dosing unit 10 quantitatively adds coagulant to the mud and water mixture. After the addition of the coagulant, the mud and water mixture enters the flocculation mixing reaction unit 20, at which time the mud and water mixture and the coagulant are fully mixed to gradually form flocs. The flocculated mixture enters the coarse sedimentation area 31 of the separation sedimentation unit 30, and the heavier substances such as sand and gravel are separated and enter the discharge pipe 313, and the remaining flocculated mixture continues to enter the fine sedimentation area 32. Relatively light substances such as flocs in the flocculated mixture will gradually enter the collection area 324, and then enter the subsequent sludge dewatering device through the mud discharge unit 40 for treatment. Figure 5 As shown in the figure, ① is the water flow path, ② is the path of the heavier materials such as sand and gravel in the mud-water mixture after flocculation, and ③ is the path of flocs, silt, etc. in the mud-water mixture after flocculation. The water flow path ① goes down along the guide plate in the coarse sedimentation area, and also flows into the fine sedimentation area in the horizontal direction. The heavier materials such as sand and gravel ② are precipitated downward along the guide plate into the discharge pipe. The flocs, silt, etc. ③ are precipitated into the collection area when flowing through the fine sedimentation area, and then enter the mud discharge pipe. The utility model mixes muddy water and chemicals (for example, coagulants) in the pipeline, and can extend the reaction time of the chemicals and muddy water through the disc pipeline to form flocs (such as suspended matter), and then pass through the separation sedimentation unit to gradually slow down the flow rate of the water body, while the flocs continue to grow to form sludge precipitation. The water body precipitates sand and gravel in the coarse sedimentation area, and after entering the fine sedimentation area, the flow rate is further slowed down, and sludge is precipitated in the fine sedimentation area, making the water body clearer, thereby achieving mud-water separation.

[0032] From the above process, it can be seen that the water purification device will first discharge the sand and gravel back to the river channel, which is beneficial to preserve the ecological environment of the riverbed on the one hand, and can ensure the safe operation of the subsequent sludge dewatering device on the other hand. The water purification device can further separate the sludge in the water body and discharge a large amount of water back to the river channel, thereby dehydrating the muddy water to a certain extent. The water purification device can be installed on the hull to realize the function of a floating control platform. It can work on the water surface in conjunction with the underwater dredging device. The staff can supervise and control the operation of the underwater dredging device and deal with emergencies in a timely manner.

[0033] The above description is merely an exemplary embodiment of the present disclosure and is not intended to limit the protection scope of the present disclosure. The protection scope of the present disclosure is determined by the appended claims.

Claims

1. A water purification device, characterized in that: include: Coagulant dosing unit, flocculation mixing reaction unit, separation sedimentation unit and sludge discharge unit, in, The coagulant dosing unit stores the agent; The flocculation mixing reaction unit is connected to the coagulant adding unit and the pipeline for conveying the mud-water mixture, and the flocculation mixing reaction unit includes a reaction pipeline; The separation and sedimentation unit comprises a coarse sedimentation zone and a fine sedimentation zone, The coarse sedimentation zone includes a guide unit and a discharge pipe arranged below the guide unit; The fine sedimentation zone includes a separation sedimentation zone having a plurality of separation tubes and a collection zone for collecting sludge disposed below the separation sedimentation zone; The sludge discharge unit is in communication with the collection area to discharge the sludge from the water purification device.

2. The water purification device according to claim 1, characterized in that The guide unit of the coarse sedimentation zone includes a plurality of guide plates staggered and arranged from top to bottom and inclined downward.

3. The water purification device according to claim 2, characterized in that The angles between the plurality of guide plates and the cavity walls on which they are installed and the horizontal distances between the plurality of guide plates and the adjacent cavity walls in their respective extending directions gradually increase along the water flow direction.

4. The water purification device according to claim 1, characterized in that The separation sedimentation zone of the fine sedimentation zone also includes a plurality of mud slide grooves, and the plurality of separation pipes are arranged between adjacent mud slide grooves. The lower part of each separation pipe has a separation port connected to the mud slide groove, and the plurality of separation pipes are in a horizontal direction.

5. The water purification device according to claim 1, characterized in that The coarse sedimentation zone and the fine sedimentation zone are arranged at the same height, and water flows from the coarse sedimentation zone into the fine sedimentation zone via the same-path water distribution method.

6. The water purification device according to claim 1, characterized in that At least a portion of the reaction pipeline is arranged at the lower part of the water purification device, arranged along the length direction of the water purification device and bent and changed direction multiple times.

7. The water purification device according to claim 1, characterized in that The mud discharge unit comprises a mud discharge pump, a plurality of mud discharge pipes and a mud discharge valve corresponding to each mud discharge pipe, the mud discharge valves are opened in turn, and the mud discharge unit also comprises a pipe connected to the flocculation mixing reaction unit.

8. The water purification device according to claim 1, characterized in that The separation and sedimentation unit further includes a drainage area including an S-shaped water flow channel formed by a plurality of partitions.

9. The water purification device according to claim 1, characterized in that The water purification device is installed on the hull.

10. The water purification device according to claim 1, characterized in that The coagulant dosing unit comprises a cartridge, a metering pump and a valve.

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