A new high-density sedimentation tank for high-salinity wastewater treatment

Abstract

The utility model discloses a novel high density sedimentation tank for high salt wastewater treatment, including a plurality of water collecting tank, a plurality of water collecting tank all are provided with rotary filter thimble, wherein, rotary filter thimble rotation is connected in the corresponding water collecting tank top inside, a plurality of water collecting tank both sides all are installed with triangle scraper, triangle scraper sliding connection is in the corresponding rotary filter thimule outside, a plurality of triangle scraper bottom all are installed with electromagnetic strip, and the electromagnetic strip is close to the corresponding water collecting tank one side, through rotary filter thimble to the whole opening position of water collecting tank is intercepted filtration, so that the flocculation particle that the supernatant carries can be sheltered interception by rotary filter thimble, thereby reduced flocculation particle impurity inflow to the content of subsequent processing link, and then solved the supernatant containing more particle impurities to enter subsequent treatment process, influence water purification degree, aggravate the processing burden of subsequent processing equipment problem.

Description

Technical Field

[0001] This utility model relates to the field of sedimentation tank technology, specifically a novel high-density sedimentation tank for treating high-salt wastewater. Background Technology

[0002] In engineering practice of high-salinity wastewater treatment, effective wastewater treatment is crucial for environmental protection, water resource reuse, and the sustainable development of enterprises. New high-density sedimentation tanks, as a highly efficient sedimentation device optimized and improved from traditional sedimentation tanks, have been widely used in the field of high-salinity wastewater treatment due to their unique advantages.

[0003] However, although the new high-density sedimentation tank can effectively achieve solid-liquid separation during normal operation, and the supernatant should theoretically be relatively clear with low particulate impurity content when discharged through the side holes or notches of the collection tank, in actual operation, various factors may cause the supernatant to still contain a certain amount of particulate impurities, and a small number of fine particles will still flow out with the supernatant. When the new high-density sedimentation tank experiences abnormal operating conditions, such as a sudden and drastic change in the influent water quality, a sudden and significant increase in the concentration of suspended solids in high-salinity wastewater exceeding the design treatment load of the sedimentation tank, resulting in a sharp deterioration in the sedimentation effect, or insufficient addition of coagulant aid in the flocculation reaction zone affecting floc formation, all these will lead to a higher content of particulate impurities in the supernatant. When the supernatant containing a high amount of particulate impurities enters subsequent treatment processes, such as reverse osmosis and ion exchange, the particulate impurities can easily clog the membrane pores of the reverse osmosis membrane, leading to a significant reduction in membrane flux, severely affecting the desalination effect, impacting the water purification level, and increasing the frequency of resin regeneration and the amount of regenerant used, thus increasing the processing burden on subsequent treatment equipment.

[0004] Therefore, this utility model provides a novel high-density sedimentation tank for the treatment of high-salt wastewater. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a novel high-density sedimentation tank for treating high-salinity wastewater, thereby solving the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A novel high-density sedimentation tank for treating high-salinity wastewater includes several collection tanks, each of which is equipped with a rotating filter cylinder. The rotating filter cylinder is rotatably connected to the inner top of the corresponding collection tank. Triangular scrapers are installed on both sides of each collection tank, slidably connected to the outer side of the corresponding rotating filter cylinder. Electromagnetic strips are installed at the bottom of each triangular scraper, adhering closely to one side of the corresponding collection tank. End plates are installed at both ends of each rotating filter cylinder, which is rotatably connected to the inner wall of the collection tank via two corresponding end plates. Connecting pipes are installed between adjacent collection tanks, with a collecting pipe installed on one side of the edge of the collection tank. Drainage holes corresponding to the connecting pipes and collecting pipes are opened on the side walls of each collection tank.

[0007] Preferably, a drive rod is installed between each pair of end discs, and a plurality of fixing rings are installed on the side wall of the drive rod. Each of the fixing rings is fixedly connected to a support rod, and the support rods are installed inside the corresponding rotating filter cylinder.

[0008] Preferably, each of the drive rods has a pulley installed at one or both ends, and a synchronously rotating transmission belt is provided between every two pulleys, with an extension rod installed on one side of one of the pulleys.

[0009] Preferably, a protective housing is installed between each pair of water collection tanks to protect the transmission mechanism, and the pulley and the synchronous rotating transmission belt are both located inside the corresponding protective housing.

[0010] Preferably, water quality monitoring instruments are installed at the top of several connecting pipes in the middle, and the height of the water quality monitoring instruments is lower than that of the rotating filter cylinder.

[0011] Beneficial effects

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] (1) This utility model uses a rotating filter cylinder to intercept and filter the entire opening of the water collection tank, so that the flocculated particles carried in the supernatant can be blocked and intercepted by the rotating filter cylinder, thereby reducing the content of flocculated particle impurities flowing into the subsequent treatment process. This solves the problem that when the supernatant containing a lot of particulate impurities enters the subsequent treatment process, such as deep treatment processes like reverse osmosis and ion exchange, the particulate impurities are very likely to clog the membrane pores of the reverse osmosis membrane, resulting in a significant reduction in membrane flux, serious impact on desalination effect, and impact on water purification level. At the same time, it increases the frequency of resin regeneration and the amount of regenerant used, increasing the processing burden of the subsequent treatment equipment.

[0014] (2) This utility model uses a triangular scraper to clean the side wall of the rotary filter cylinder in real time, allowing the flocculated particles intercepted on the rotary filter cylinder to be peeled off and re-participate in the sedimentation process, ensuring the water permeability stability of the rotary filter cylinder. When the water source entering the inner side of the rotary filter cylinder flows downward into the water collection tank, it can perform a reverse flushing of the rotary filter cylinder, allowing the small amount of impurities carried on the rotary filter cylinder to be washed away and discharged, further ensuring the water permeability stability of the rotary filter cylinder and reducing clogging.

[0015] (3) This utility model can effectively adsorb magnetic metal particles in water, such as tiny particles of iron, nickel, cobalt and their alloys, by means of electromagnetic strips, thereby reducing the content of metal pollutants in the water, which is helpful for subsequent deep treatment and water resource reuse. At the same time, it reduces the wear of metal particles on the treatment equipment. The water source that enters the water collection tank enters the connecting pipe or collection pipe through the drain hole, and is finally guided into the next stage treatment unit through the same collection pipe. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is a partial cross-sectional structural schematic diagram of the present invention;

[0018] Figure 3 This is the utility model Figure 2 A magnified view of the structure at point A in the middle;

[0019] Figure 4 This is a three-dimensional structural diagram of the triangular scraper and magnetic strip in this utility model.

[0020] In the diagram: 1. Water collection tank; 11. Triangular scraper; 12. Electromagnetic strip; 13. Connecting pipe; 14. Collection pipe; 15. Drain hole; 2. Rotary filter cylinder; 21. End plate; 22. Drive rod; 221. Pulley; 222. Synchronous rotation transmission belt; 223. Outer rod; 23. Fixing ring; 231. Support rod; 24. Protective housing; 3. Water quality monitoring instrument. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4A novel high-density sedimentation tank for treating high-salt wastewater includes several water collection tanks 1, each equipped with a rotating filter cylinder 2.

[0023] The rotating filter cylinder 2 is rotatably connected to the inner top of the corresponding water collection tank 1. Several water collection tanks 1 are equipped with triangular scrapers 11 on both sides. The triangular scrapers 11 are slidably connected to the outer side of the corresponding rotating filter cylinder 2. Several triangular scrapers 11 are equipped with electromagnetic strips 12 at their bottom ends. The electromagnetic strips 12 are closely attached to one side of the corresponding water collection tank 1.

[0024] It should be noted that the rotary filter cartridge 2 described in this embodiment is made of ceramic ultrafiltration membrane, and the edge of the triangular scraper 11 scrapes and cleans the side wall of the rotary filter cartridge 2.

[0025] Several rotating filter cylinders 2 are equipped with end plates 21 at both ends, and the rotating filter cylinders 2 are rotatably connected to the inner wall of the water collection tank 1 through the corresponding two end plates 21.

[0026] It should be noted that the end plate 21 described in this embodiment seals the end hole of the rotating filter cylinder 2, and the end plate 21 prevents the rotating filter cylinder 2 from generating rotational friction directly with the water collection tank 1.

[0027] A connecting pipe 13 is installed between two adjacent water collection tanks 1, and a collecting pipe 14 is installed on one side of the edge water collection tank 1. Drainage holes 15 corresponding to the connecting pipe 13 and the collecting pipe 14 are opened on the side walls of several water collection tanks 1.

[0028] It should be noted that the several water collection tanks 1 described in this embodiment are connected in series for drainage through several connecting pipes 13 and collecting pipes 14 and several drainage holes 15, which facilitates unified allocation.

[0029] Specifically, to address the issue of high flocculent particle content in the wastewater supernatant placing a heavy burden on subsequent treatment equipment, high-salinity wastewater enters a sedimentation tank through a pipeline. After passing through the coagulation and flocculation zones within the sedimentation tank, it reaches the sedimentation zone where flocculent particles settle downwards. Meanwhile, the supernatant and a small amount of flocculent particles rise through inclined plates or pipes to the collection tank 1. When the supernatant level exceeds the top of the collection tank 1, it flows into the internal space of the collection tank 1. A rotating filter cylinder 2 rotates at the top opening of the collection tank 1, intercepting and filtering the entire opening area, thus reducing the amount of flocculent particles carried in the supernatant. The rotating filter cartridge 2 can effectively block and intercept particulate impurities. The ceramic ultrafiltration membrane used in the rotating filter cartridge 2 is hard, has high mechanical strength, and is not easily deformed. It can withstand high pressure and external impacts, maintaining structural integrity and stability even under complex operating conditions and high-load filtration operations. The rotating filter cartridge 2 has a large filtration area; its cylindrical structure results in a relatively large membrane surface area, allowing it to process more liquid per unit time. This reduces the amount of flocculated particulate impurities flowing into subsequent treatment stages, thus solving the problem of particulate impurities in the supernatant entering subsequent treatment processes, such as reverse osmosis and ion exchange. It easily clogs the membrane pores of the reverse osmosis membrane, leading to a significant reduction in membrane flux and severely impacting desalination efficiency, thus affecting water purification levels. It also increases the frequency of resin regeneration and the amount of regenerant used, exacerbating the burden on subsequent treatment equipment. Furthermore, the triangular scraper 11 continuously scrapes and cleans the sidewalls of the rotary filter cartridge 2, allowing the intercepted flocculent particles to be removed and re-participated in the sedimentation process, ensuring the water permeability stability of the rotary filter cartridge 2. When the water source entering the inner side of the rotary filter cartridge 2 flows downwards into the collection tank 1, it can perform a reverse flushing of the rotary filter cartridge 2, allowing the flocculent particles carried on the rotary filter cartridge 2 to be removed. The small amount of impurities carried can be flushed away and discharged, further ensuring the water permeability stability of the rotary filter cartridge 2 and reducing clogging. At the same time, the electromagnetic strip 12 can effectively adsorb magnetic metal particles in the water, such as tiny particles of iron, nickel, cobalt and their alloys, reducing the content of metal pollutants in the water, which is helpful for subsequent deep treatment and water resource reuse. It also reduces the wear of metal particles on the treatment equipment. After the electromagnetic strip 12 is de-energized, the particles attached to it can fall off and participate in sedimentation. The water source that enters the water collection tank 1 enters the connecting pipe 13 or the collecting pipe 14 through the drain hole 15, and finally flows into the collecting pipe 14 for guidance to the next stage of treatment unit.

[0030] In one embodiment of this utility model, such as Figures 1-4 As shown, a drive rod 22 is installed between each pair of end plates 21. Several fixing rings 23 are installed on the side wall of the drive rod 22. Support rods 231 are fixedly connected to the side wall of each fixing ring 23. The support rods 231 are installed inside the corresponding rotating filter cylinder 2.

[0031] It should be noted that the array of several fixed rings 23 and support rods 231 described in this embodiment is distributed inside the rotating filter cylinder 2.

[0032] Specifically, the rotating filter cylinder 2 reduces the rotational friction between itself and the water collection tank 1 through two end plates 21, and the drive rod 22 strengthens the support stability between the two end plates 21. The drive rod 22 supports several fixed rings 23 and support rods 231. The support rods 231 abut against the inner side of the rotating filter cylinder 2, so that the inner side of the rotating filter cylinder 2 is supported, is not prone to deformation, and ensures stable use.

[0033] In one embodiment of this utility model, such as Figures 1-4 As shown, several drive rods 22 are equipped with pulleys 221 at one or both ends, and a synchronous rotating transmission belt 222 is provided between every two pulleys 221. An extension rod 223 is installed on one side of one of the pulleys 221.

[0034] It should be noted that the positions of the several synchronous rotating transmission belts 222 described in this embodiment are staggered, and one end of the outrigger 223 extends out of the sedimentation tank and is connected to an external motor.

[0035] Specifically, rotational transmission is achieved between every two drive rods 22 via pulleys 221 and synchronous rotating transmission belts 222. The staggered synchronous rotating transmission belts 222 do not interfere with each other, ensuring stable use. The motor outside the sedimentation tank drives the extended rods 223. With the cooperation of several pulleys 221 and several synchronous rotating transmission belts 222, several drive rods 22 rotate synchronously, thereby enabling several rotating filter cylinders 2 to rotate synchronously.

[0036] In one embodiment of this utility model, such as Figures 1-4 As shown, a protective housing 24 is installed between each pair of water collection tanks 1 to protect the transmission mechanism, and the pulley 221 and the synchronous rotating transmission belt 222 are both inside the corresponding protective housing 24.

[0037] Specifically, the protective housing 24 provides external protection for the pulley 221 and the synchronous rotating transmission belt 222 to prevent flocculated particles in the water from interfering with the transmission components and to reduce corrosion damage.

[0038] In one embodiment of this utility model, such as Figures 1-4 As shown, several connecting pipes 13 in the middle are equipped with water quality monitoring instruments 3 at their top ends. The height of the water quality monitoring instruments 3 is lower than that of the rotating filter cylinder 2.

[0039] It should be noted that the water quality monitoring instrument 3 described in this embodiment is electrically connected to the motor outside the sedimentation tank.

[0040] Specifically, the water quality monitoring instrument 3 monitors key water quality parameters such as suspended solids concentration, pH value, and temperature of the influent in real time, as well as the operating parameters of the sedimentation tank, such as the stirring intensity in the mixing zone, the amount of coagulant added in the flocculation reaction zone, and the water level in the sedimentation zone. When the above values ​​in the sedimentation zone rise, the water quality monitoring instrument 3 feeds the information back to the equipment control unit, so that the motor can adjust its speed and the rotation speed of the rotating filter cylinder 2 can be matched, thereby accelerating the cleaning efficiency of the triangular scraper 11 on the rotating filter cylinder 2 and preventing the increase of flocculated particles from affecting the water permeability of the rotating filter cylinder 2.

[0041] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0042] Working principle: High-salinity wastewater enters the sedimentation tank through pipelines, where it is first rapidly mixed with coagulant in the coagulation zone, causing fine suspended particles and colloidal substances in the wastewater to aggregate. Next, it enters the flocculation zone, where it reacts with coagulant aids to further form larger flocs. Subsequently, the wastewater flows into the sedimentation zone, where the flocculent particles settle downwards under gravity, while the supernatant and a small amount of flocculent particles rise through inclined plates or pipes to the collection tank 1. When the supernatant level exceeds the top of the sedimentation tank collection tank 1, the supernatant flows into the internal space of the collection tank 1. A rotary filter cylinder 2 made of ceramic ultrafiltration membrane is installed at the top opening of the sedimentation tank collection tank 1. The rotary filter cylinder 2 rotates at this position to intercept and filter the entire opening, effectively intercepting the flocculent particles carried in the supernatant, reducing their content in subsequent treatment stages, avoiding clogging of subsequent reverse osmosis membranes and other equipment, and reducing the burden on subsequent treatment equipment. The triangular scraper 11, which is slidably connected to the outside of the rotary filter cylinder 2, scrapes and cleans the side wall of the rotary filter cylinder 2 in real time, peeling off the flocculent particles intercepted on the rotary filter cylinder 2 so that they can re-participate in the sedimentation process, ensuring the water permeability stability of the rotary filter cylinder 2. When these values ​​in the sedimentation zone rise, the water quality monitoring instrument 3 feeds the information back to the equipment control unit, causing the motor to adjust its speed, and the rotation speed of the rotary filter cylinder 2 is matched accordingly, accelerating the cleaning efficiency of the triangular scraper 11 on the rotary filter cylinder 2, and preventing the increase of flocculent particles from affecting the water permeability of the rotary filter cylinder 2.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel high-density sedimentation tank for treating high-salinity wastewater, comprising several water collection tanks (1), characterized in that, Each of the aforementioned water collection tanks (1) is equipped with a rotating filter cylinder (2), wherein, The rotating filter cylinder (2) is rotatably connected to the inner top of the corresponding water collection tank (1). Triangular scrapers (11) are installed on both sides of several water collection tanks (1). The triangular scrapers (11) are slidably connected to the outer side of the corresponding rotating filter cylinder (2). Electromagnetic strips (12) are installed at the bottom of several triangular scrapers (11). The electromagnetic strips (12) are closely attached to one side of the corresponding water collection tank (1). Several rotating filter cylinders (2) are equipped with end plates (21) at both ends, and the rotating filter cylinders (2) are rotatably connected to the inner wall of the water collection tank (1) through two corresponding end plates (21); A connecting pipe (13) is installed between each of the two adjacent water collection tanks (1), and a collecting pipe (14) is installed on one side of the edge of the water collection tank (1). A drainage hole (15) corresponding to the connecting pipe (13) and the collecting pipe (14) is opened on the side wall of several water collection tanks (1).

2. The novel high-density sedimentation tank for treating high-salinity wastewater according to claim 1, characterized in that, A drive rod (22) is installed between each pair of end plates (21). A plurality of fixing rings (23) are installed on the side wall of the drive rod (22). A support rod (231) is fixedly connected to the side wall of each of the fixing rings (23). The support rods (231) are installed on the inner side of the corresponding rotating filter cylinder (2).

3. The novel high-density sedimentation tank for treating high-salinity wastewater according to claim 2, characterized in that, Each of the drive rods (22) has a pulley (221) installed at one or both ends, and a synchronous rotating transmission belt (222) is provided between each pair of pulleys (221). An extension rod (223) is installed on one side of one of the pulleys (221).

4. The novel high-density sedimentation tank for treating high-salinity wastewater according to claim 3, characterized in that, Between each pair of water collection tanks (1), a protective housing (24) is installed to protect the transmission mechanism, and the pulley (221) and the synchronous rotating transmission belt (222) are both inside the corresponding protective housing (24).

5. The novel high-density sedimentation tank for treating high-salinity wastewater according to claim 1, characterized in that, Several connecting pipes (13) in the middle are equipped with water quality monitoring instruments (3) at their top ends. The height of the water quality monitoring instruments (3) is lower than that of the rotating filter cylinder (2).

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