A circulating water on-line desalination integrated system

Abstract

This utility model discloses an integrated online desalination system for circulating water, comprising a sand filtration mechanism (1), a desalination mechanism (2), and a sterilization mechanism (3) connected in sequence. The sand filtration mechanism (1) includes a sand filter tank (4), with a wastewater inlet pipe assembly (5) at the upper side and a wastewater outlet pipe assembly (6) at the lower side. The desalination mechanism (2) includes a desalination tank (7), with the wastewater outlet pipe assembly (6) connected to the lower end of the desalination tank (7). The desalination tank (7) contains an annular electrode assembly (8), and a scraper assembly (9) for scraping crystals from the electrode surface is located within the electrode assembly (8). The upper outlet of the desalination tank (7) is connected to the sterilization mechanism (3) via a pipeline. This utility model ensures the high efficiency and stability of circulating water desalination through the system integration of sand filtration, desalination, and sterilization.

Description

Technical Field

[0001] This utility model relates to the field of water treatment equipment, and in particular to an integrated system for online desalination of circulating water. Background Technology

[0002] Industrial cooling water used for recycling is called circulating water. After long-term circulation, some dissolved substances in the water concentrate or disappear, dust accumulates, microorganisms grow, and some soluble inorganic salts are produced in the water, causing scale deposition in equipment and pipes or corrosion of metal equipment and pipes. Therefore, it is necessary to treat the circulating water with desalination. In the prior art, for example, Chinese utility model patent CN223150351U discloses a wastewater electro-desalination device, including a cooling tower and a cooling water pool installed at the bottom of the cooling tower. The input end of the cooling tower is conductively connected to a main circulating water pipe; the main circulating water pipe is conductively connected to a branch circulating water pipe, and the output end of the branch circulating water pipe is connected to an electrochemical water treatment device.

[0003] However, circulating water treatment is essentially a complete system process requiring the coordinated efforts of multiple stages. The aforementioned electro-desalination equipment in the existing technology still has certain shortcomings: On the one hand, it directly introduces the circulating water to be treated into the electrochemical water treatment device for electrolytic desalination without pre-treating the suspended impurities and colloidal particles contained in the circulating water. These impurities are prone to adhere to the electrode surface or membrane module of the electrochemical device, leading to electrode polarization and membrane pore blockage, which will affect the efficiency of the desalination process, cause fluctuations in the desalination effect, and reduce the stability of system operation. On the other hand, the equipment only focuses on the desalination stage and does not set up a sterilization treatment unit for the desalinated water. The microorganisms remaining in the desalinated water will continue to multiply, easily forming biological slime, and failing to achieve full-process compliant treatment of circulating water. Utility Model Content

[0004] The purpose of this invention is to provide an integrated online desalination system for circulating water. This invention integrates sand filtration, desalination, and sterilization processes to ensure the high efficiency and stability of the desalination effect on circulating water.

[0005] The technical solution of this utility model is as follows: A complete integrated system for online desalination of circulating water, comprising a sand filtration mechanism, a desalination mechanism, and a sterilization mechanism connected in sequence. The sand filtration mechanism includes a sand filter tank with multiple layers of filter media inside. The upper side of the sand filter tank has a wastewater inlet pipe assembly, and the lower side of the sand filter tank has a wastewater outlet pipe assembly. The desalination mechanism includes a desalination tank. The wastewater outlet pipe assembly is connected to the lower end of the desalination tank. An annular electrode assembly is provided inside the desalination tank and located in the electrode assembly. A scraper assembly for scraping crystals on the electrode surface is provided inside the desalination tank and located in the electrode assembly. The upper outlet end of the desalination tank is connected to the sterilization mechanism via a pipeline.

[0006] In the above-mentioned integrated system for online desalination of circulating water, the wastewater feed pipe assembly includes a sand filter pump located on one side of the sand filter tank. The output end of the sand filter pump is connected to a sludge inlet pipe connected to the side of the sand filter tank, and the sludge inlet pipe is equipped with a liquid inlet valve.

[0007] In the aforementioned integrated system for online desalination of circulating water, a three-way reversing valve is also provided on the inlet pipe, and one end of the three-way reversing valve is provided with a flushing inlet pipe connected to the lower end of the sand filter tank; a flushing outlet pipe is provided at the upper end of the back side of the sand filter tank, and a drain pipe connected to the flushing outlet pipe is provided at the bottom of the sand filter tank.

[0008] In the aforementioned integrated online desalination system for circulating water, the electrode assembly includes an anode sleeve disposed inside a desalination tank. A lower support is provided inside the desalination tank, and a cathode sleeve is disposed on the lower support outside the anode sleeve. The cathode sleeve is disposed outside the anode sleeve, and a desalination space is formed between the anode sleeve and the cathode sleeve. The upper ends of both the anode sleeve and the cathode sleeve are provided with threaded rods, and fixing nuts are fitted on the threaded rods and disposed on the upper surface of the desalination tank.

[0009] In the aforementioned integrated system for online desalination of circulating water, the scraper assembly includes a scraper motor located at the top of the desalination tank. The output end of the scraper motor is connected to a drive shaft that penetrates into the desalination tank. The end of the drive shaft is connected to a lower bracket via a bearing. An annular scraper for scraping away crystals formed on the electrode surface in the desalination space is mounted on the end of the drive shaft via a bushing.

[0010] In the aforementioned integrated system for online desalination of circulating water, the lower bracket is provided with multiple stepped blocks around the drive shaft to support the cathode sleeve.

[0011] In the aforementioned integrated online desalination system for circulating water, the bottom of the desalination tank has a wastewater pipe, which is connected to a drain pipe.

[0012] In the aforementioned integrated online desalination system for circulating water, the sterilization mechanism includes a housing with an inlet pipe at one end and an outlet pipe at the back. Multiple openings at the bottom of the housing provide outlet pipes connected to an ozone generator, and the outlet pipes have ozone diffusers installed inside the housing. At the other end of the housing are multiple neatly arranged ultraviolet lamps, with the irradiation ends of the lamps located inside the housing. Supports for the ultraviolet lamps are also provided inside the housing.

[0013] In the aforementioned integrated system for online desalination of circulating water, the ultraviolet lamp assembly includes a transparent tube sleeve that passes through a hole on the side of the housing and inside a support component. A lamp tube is installed inside the transparent tube sleeve, and one end of the lamp tube is connected to a connector. A rotatable plug cap is provided on the connector cap, and the plug cap is connected to one end of the transparent tube sleeve by threads.

[0014] In the aforementioned integrated system for online desalination of circulating water, the support component includes a partition disposed inside the housing, with first support plates on both sides of the partition and a second support plate on the inner wall of the housing; part of the transparent tube sleeve passes through the first support plate, and another part of the transparent tube sleeve passes through the second support plate; the first support plate and the second support plate are staggered.

[0015] Compared with the prior art, the present invention has the following advantages: 1. In this invention, circulating water first enters the sand filter tank of the sand filtration mechanism. The filter media in the sand filter tank filters out suspended impurities and solid particles in the circulating water, thus pre-treating the circulating water and effectively avoiding the impact of impurity particles on the desalination operation. Then, the circulating water flows into the desalination mechanism, where the electrode assembly operates and the electrodes adsorb the salt in the water. Finally, the circulating water is sterilized by the sterilization mechanism, which effectively kills the microorganisms remaining in the desalinated water and inhibits their reproduction. This invention, through the system integration of sand filtration, desalination, and sterilization, ensures the high efficiency and stability of the circulating water desalination effect.

[0016] 2. In the desalination mechanism, the anode sleeve and cathode sleeve are coaxially arranged to form an annular desalination space. With the detachable connection of the threaded rod and the fixing nut, the contact area between the electrode and the water body is expanded, and the electrode is easy to disassemble and maintain.

[0017] 3. In the sand filter mechanism, the flushing inlet pipe is located at the lower end of the sand filter tank, and the flushing outlet pipe is located at the upper end of the sand filter tank. By setting up a backwashing path from bottom to top, a strong flushing effect can be formed on the filter media layer, effectively removing suspended solids trapped in the filter media and stabilizing the backwashing effect. The flushing inlet pipe is connected to the original sewage inlet pipe group and uses the same power source as the filtration pipeline, eliminating the need for an additional pump and reducing the energy consumption of the equipment. Compared with the water loss caused by pumping water back through the outlet pipe in the prior art, the pipeline setting of this utility model improves the water resource utilization rate. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of a sand filter tank; Figure 3 This is a schematic diagram of the flushing outlet pipe; Figure 4 This is a schematic diagram of the interior of a sand filter tank; Figure 5 This is a schematic diagram of a desalination tank; Figure 6 This is a schematic diagram for securing the nut. Figure 7 This is a schematic diagram of the electrode assembly; Figure 8 This is a schematic diagram of the stepped blocks; Figure 9 This is a schematic diagram of the scraper assembly; Figure 10 This is a schematic diagram of the box. Figure 11 This is a schematic diagram of an ultraviolet lamp assembly; Figure 12 This is a schematic diagram of an ozone diffuser; Figure 13 This is a schematic diagram of the support component; Figure 14 This is a schematic diagram of a light tube; Figure 15 This is a schematic diagram of a plug.

[0019] Explanation of markings in the attached diagram: 1-Sand filter mechanism, 2-Desalination mechanism, 3-Sterilization mechanism, 4-Sand filter tank, 5-Wastewater inlet pipe assembly, 6-Wastewater outlet pipe assembly, 7-Desalination tank, 8-Electrode assembly, 9-Scraper assembly, 10-Sand filter pump, 11-Sludge inlet pipe, 12-Liquid inlet valve, 13-Three-way reversing valve, 14-Flush inlet pipe, 15-Flush outlet pipe, 16-Sludge discharge pipe, 17-Anode sleeve, 18-Lower bracket, 19-Threaded rod, 20-Fixed... 21-Set nut, 22-Scraper motor, 23-Drive shaft, 24-Annular scraper, 25-Step block, 26-Sewage pipe, 27-Box body, 28-Water inlet pipe, 29-Water outlet pipe, 30-Ozone diffuser, 31-Ultraviolet lamp assembly, 32-Support component, 33-Transparent tube sleeve, 34-Lamp tube, 35-Connector, 36-End cap, 37-Partition plate, 38-First support plate, 39-Second support plate, 40-Cathode sleeve. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0021] Example: An integrated online desalination system for circulating water includes a sand filter unit 1, a desalination unit 2, and a sterilization unit 3 connected in sequence, as shown in the attached diagram. Figure 1 As shown, the sand filtration mechanism 1 includes a sand filter tank 4 with multiple layers of filter media inside, as shown in the attached diagram. Figure 2 and 4As shown, the filter media typically consists of an upper layer of fine quartz sand (0.5-1mm particle size), a middle layer of anthracite (1-2mm particle size), and a lower layer of gravel support (2-4mm particle size), forming a gradient filtration structure. The sand filter tank has a transparent window on its circumferential side for observing the sand layer height. The top of the sand filter tank has an exhaust valve to reduce internal pressure, effectively lowering the pressure and preventing equipment damage or safety hazards caused by excessive pressure, thus improving the safety and controllability of the operation. The upper side of the sand filter tank 4 has a wastewater inlet pipe assembly 5, and the lower side of the sand filter tank 4 has a wastewater outlet pipe assembly 6. The desalination mechanism 2 includes a desalination tank 7, as shown in the attached diagram. Figure 5 As shown, the wastewater discharge pipe assembly 6 is connected to the lower end of the desalination tank 7. The desalination tank 7 contains a ring-shaped electrode assembly 8, and a scraper assembly 9 for removing crystals from the electrode surface is installed inside the desalination tank 7 and within the electrode assembly 8. The upper outlet end of the desalination tank 7 is connected to the sterilization mechanism 3 via a pipeline. The desalination device consists of two sets, with the inlet and outlet ends connected by a pipeline.

[0022] The wastewater inlet pipe assembly 5 includes a sand filter pump 10 located on one side of the sand filter tank 4. The output end of the sand filter pump 10 is connected to a wastewater inlet pipe 11 connected to the side of the sand filter tank 4. The wastewater inlet pipe 11 is equipped with an inlet valve 12 and a three-way reversing valve 13. One end of the three-way reversing valve 13 is connected to a flushing inlet pipe 14 connected to the lower end of the sand filter tank 4. The upper back side of the sand filter tank 4 is equipped with a flushing outlet pipe 15, as shown in the attached figure. Figure 3As shown, the bottom of the sand filter tank 4 is equipped with a drain pipe 16 connected to the flushing outlet pipe 15. When the inlet valve is opened, the sand filter pump draws circulating water into the sand filter tank through the drain pipe. The circulating water passes through layers of filter media and finally flows into the desalination mechanism through the wastewater outlet pipe group 6. During filtration, the liquid flows from top to bottom. The sand filter mechanism also has a backwashing function. To achieve timely backwashing of the filter media and ensure its filtration effect, MPM480 diffused silicon differential pressure sensors are installed on the wastewater inlet pipe group 5 and wastewater outlet pipe group 6 of the sand filter mechanism, respectively. The two sensors are connected to the system PLC control cabinet via signal cables to collect the pressure difference between the inlet and outlet of the filter media layer in real time. A backwashing start threshold is set. When the PLC detects that the pressure difference exceeds the threshold for 5 minutes, it automatically triggers the backwashing program. First, the shut-off valve of the wastewater outlet pipe 6 is closed, and simultaneously, the three-way reversing valve 13 is switched to the flushing passage. The sand filter pump 10 continues to run, flushing clean water. The inlet pipe 14 injects water from the lower end of the sand filter tank 4, forming a backwash flow path from bottom to top. During the backwashing process, the differential pressure sensor continuously monitors the pressure change. When the differential pressure drops below the set value, the PLC automatically closes the flushing passage of the three-way reversing valve 13, restarts the shut-off valve of the sewage discharge pipe group 6, and restores the filtration condition. The flushing inlet pipe is located at the lower end of the sand filter tank, and the flushing outlet pipe is located at the upper end of the sand filter tank. By setting a backwashing path from bottom to top, a strong flushing effect can be formed on the filter media layer, effectively removing suspended solids trapped in the filter media and stabilizing the backwashing effect. The flushing inlet pipe is connected to the original sewage inlet pipe group and has the same power source as the filtration pipeline. There is no need to set up an additional pump body, which reduces the energy consumption of the equipment operation. Compared with the water loss caused by pumping water back through the outlet pipe in the prior art, the pipeline setting of this utility model improves the water resource utilization rate. Both the flushing outlet pipe and the wastewater discharge pipe assembly are equipped with control valves. The flushing outlet pipe uses a ball valve of model Q41F-16C, which is opened during backwashing to allow wastewater carrying impurities after flushing the filter media from bottom to top in the tank to flow into the drain pipe and be discharged, thus achieving centralized collection and cleaning of impurities. The control valve of the wastewater discharge pipe assembly uses a shut-off valve of model J41H-16C, which is opened during filtration to allow the filtered clean water in the sand filter tank to flow into the subsequent water treatment stage (such as the desalination mechanism) through the straight pipe. It is closed during backwashing to prevent wastewater containing impurities generated during backwashing from entering the outlet pipe.

[0023] The electrode assembly 8 includes an anode sleeve 17 disposed within the desalination tank 7, as shown in the attached figure. Figure 7As shown, the desalination tank 7 is equipped with a lower support 18, on which a cathode sleeve 40, coaxial with the anode sleeve 17, is mounted. The cathode sleeve 40 is located outside the anode sleeve 17, and a desalination space is formed between the anode sleeve 17 and the cathode sleeve 40. Threaded rods 19 are installed at the upper ends of both the anode sleeve 17 and the cathode sleeve 40, and fixing nuts 20, located on the upper surface of the desalination tank 7, are fitted onto the threaded rods 19. Figure 6 As shown, an annular desalination space is formed by the coaxial arrangement of the anode sleeve and cathode sleeve. The detachable connection between the threaded rod and the fixing nut expands the contact area between the electrode and the water, and facilitates electrode disassembly and maintenance. The threaded rod is not only a fixing component but also a connection to the circuit to conduct current.

[0024] The scraper assembly 9 includes a scraper motor 21 mounted on the upper end of the desalination tank 7, as shown in the attached figure. Figure 9 As shown, the output end of the scraper motor 21 is connected to a drive shaft 22 that passes through the interior of the desalination tank 7. The end of the drive shaft 22 is connected to the lower bracket 18 via a bearing. An annular scraper 23 for scraping away crystals formed on the electrode surface in the desalination space is mounted on the end of the drive shaft 22 via a bushing. The annular scraper is designed along the axial dimension of the electrode sleeve. To ensure the stability of the annular scraper, fixing rings are provided at the upper end and middle part of the annular scraper. The bottom of the desalination tank 7 has a sludge pipe 25, which is connected to the drain pipe 16. Both the sand filtration process and the desalination process will generate other pollutants. To facilitate the collection of pollutants, the sludge pipe is connected to the drain pipe. During electrode adsorption, solid crystals easily adhere to the inner wall of the cathode sleeve. The scraper assembly effectively removes these crystals from the electrode surface. When the scraper motor starts and the scraper rotates with the drive shaft, its outer edge tightly contacts the inner wall of the cathode sleeve, breaking the crystal layer into fine particles. These particles sink with the water flow to the bottom of the desalination tank and are discharged into the sewage system through the wastewater pipe. Simultaneously, the inner edge of the scraper can clean any small amount of oxidation products that may adhere to the outer wall of the anode sleeve, ensuring the electrode surface remains clean at all times. The lower bracket 18 is provided with multiple stepped blocks 24 around the drive shaft 22 to support the cathode sleeve 40. Figure 8 As shown, to ensure the stable positioning of the cathode sleeve during the desalination process, multiple stepped blocks are set on the lower bracket. Each stepped block has a right-angled notch, and the cathode sleeve is placed in the right-angled notch.

[0025] In the electrode assembly, the anode sleeve and cathode sleeve are coaxially mounted inside the desalination tank. A lower bracket provides bottom support for the cathode sleeve. The two sleeves are locked together by a threaded rod at their upper ends and a fixing nut at the top of the desalination tank, forming a uniformly spaced annular desalination space. When the anode sleeve is connected to the positive terminal of a DC power supply and the cathode sleeve to the negative terminal, a stable DC electric field is rapidly established within the annular space. The electric field strength can be adjusted according to the salinity of the circulating water. Soluble inorganic cations in the water move towards the cathode sleeve under the influence of the electric field. Upon reaching the surface of the cathode sleeve, a reduction reaction occurs, and some cations directly precipitate as solid crystals (adhering to the inner wall of the cathode sleeve). Anions in the water move towards the anode sleeve and undergo an oxidation reaction on its surface. The generated gas escapes upwards with the water flow or forms a stable compound with the anode material, completing the removal of anions. The annular space design significantly increases the contact area between the water and the electrode compared to traditional columnar electrodes, resulting in a shorter ion migration path and a significantly improved desalination efficiency.

[0026] The sterilization mechanism 3 includes a housing 26, as shown in the attached figure. Figure 10 As shown, one end of the housing 26 has a water inlet pipe 27, the back of the housing 26 has a water outlet pipe 28, and multiple holes at the bottom of the housing 26 have air outlet pipes 29 connected to the ozone generating mechanism. The port of the air outlet pipe 29 has an ozone diffuser 30 installed inside the housing 26, as shown in the attached diagram. Figure 12 As shown, the ozone diffuser mainly includes a base with a dome-shaped cover. The dome-shaped cover has multiple vents through which ozone is emitted. The ozone has extremely strong oxidizing properties, efficiently decomposing organic pollutants (such as pesticides, dyes, detergents, etc.) and reducing inorganic substances (such as sulfides, nitrites, etc.) in water. It breaks down large molecular pollutants into smaller molecules, improving the biodegradability of wastewater. Furthermore, it rapidly inactivates microorganisms such as bacteria, viruses, and algae by destroying their cell membranes, proteins, and nucleic acid structures. It has high sterilization efficiency and a wide range of action. The other end of the housing 26 is equipped with multiple neatly arranged ultraviolet lamp groups 31, as shown in the attached diagram. Figure 11 As shown, the irradiation end of the ultraviolet lamp assembly 31 is located inside the housing 26, and the housing 26 is equipped with a support member 32 for supporting the ultraviolet lamp assembly 31, as shown in the attached figure. Figure 13As shown, multiple outlet pipes with various openings are installed at the bottom of the chamber, along with an ozone diffuser. These openings allow ozone to be injected from different areas of the water body. The domed cover and diffusion holes of the ozone diffuser further disperse the ozone evenly, significantly improving the diffusion efficiency of ozone in the water and enhancing the contact and mixing degree between ozone and the water to be treated. For ozone gas that is not dissolved in the water, a tail gas treatment device is installed at the top of the chamber. A tail gas collection pipe is installed at the top of the chamber, and the end of the tail gas collection pipe is connected to a vertical activated carbon adsorption tower. The tower is filled with columnar ozone-specific activated carbon. Undissolved ozone tail gas enters the adsorption tower through the tail gas collection pipe, where the activated carbon pores adsorb ozone molecules and simultaneously undergo a catalytic decomposition reaction. The treated tail gas is discharged through the exhaust pipe at the top of the adsorption tower, effectively improving the oxidation and sterilization effect. Secondly, this invention uses multiple neatly arranged ultraviolet lamps, significantly increasing the irradiation range and intensity of ultraviolet light, making the distribution of ultraviolet lamps more reasonable, and enabling more comprehensive irradiation of the water body, improving treatment efficiency and adapting to high-flow-rate wastewater treatment scenarios.

[0027] The ultraviolet lamp assembly 31 includes a transparent tube sleeve 33 that passes through the side holes of the housing 26 and the support member 32. An annular groove is formed on the outer wall of the transparent tube sleeve, and an ozone-resistant and water-resistant fluororubber or nitrile rubber O-ring is embedded in the groove. When the transparent tube sleeve is inserted into the positioning hole, the O-ring is deformed by the compression between the outer wall of the tube sleeve and the inner wall of the positioning hole, forming a radial sealing surface, which can effectively block the flow path of liquids and gases. This structure provides a reliable seal. A lamp tube 34 is installed inside the transparent tube sleeve 33, as shown in the attached diagram. Figure 14 As shown, one end of the lamp tube 34 is connected to a connector 35, and a rotatable plug 36 is installed on the connector 35, as shown in the attached diagram. Figure 15 As shown, the plug cap 36 is threaded to one end of the transparent sleeve 33. After the lamp tube is placed inside the transparent sleeve, the connector is connected to the lamp tube, and the plug cap is rotated to one end of the transparent sleeve to fix the connector. One end of the housing has a vertical plate with multiple neatly arranged positioning holes. The ultraviolet lamp group passes through the positioning holes. The ultraviolet lamp group is positioned by the positioning holes on the vertical plate. The structure is simple and the positioning is stable. There are 18 ultraviolet lamp groups in total, which are evenly arranged on the vertical plate.

[0028] The support member 32 includes a partition 37 disposed within the housing 26, with first support plates 38 on both sides of the partition 37 and a second support plate 39 on the inner wall of the housing 26; a portion of the transparent tube sleeve 33 passes through the first support plate 38, and another portion of the transparent tube sleeve 33 passes through the second support plate 39; the first support plate 38 and the second support plate 39 are staggered. The first and second support plates secure the transparent tube sleeve of the ultraviolet lamp assembly, preventing the lamp assembly from shaking or shifting during water flow impact or equipment operation, ensuring the stability of the lamp assembly installation. Furthermore, the staggered arrangement of the two support plates slows down the water flow, prolongs the water residence time within the housing, ensures sufficient contact with ozone, increases the water irradiation time, and enhances the sterilization effect.

[0029] The working principle of this invention is as follows: The circulating water to be treated is drawn by a sand filter pump and transported to the upper side of the sand filter tank through the inlet pipe; the water flows from top to bottom inside the sand filter tank, passing sequentially through a gradient filter media layer composed of an upper layer of fine quartz sand, a middle layer of anthracite, and a lower layer of gravel support. Suspended impurities and colloidal particles are intercepted by the filter media; the pretreated clean circulating water is discharged from the wastewater outlet pipe group at the lower side of the sand filter tank and enters the subsequent desalination mechanism; the circulating water pretreated by the sand filter flows into the lower end of the desalination tank, filling the annular desalination space between the anode sleeve and the cathode sleeve; a stable DC electric field is established in the annular space, and the cations of soluble inorganic salts in the water move towards the cathode sleeve under the action of the electric field force, and undergo a reduction reaction after reaching the inner wall of the cathode sleeve. Solid crystals are precipitated; anions move towards the anode sleeve and undergo an oxidation reaction on the outer wall of the anode sleeve. The generated gas escapes upward with the water flow or forms stable compounds, completing ion removal; the desalinated water is discharged from the liquid outlet at the top of the desalination tank and enters the sterilization mechanism; the desalinated water flows in from the inlet pipe at one end of the tank, and multiple gas outlet pipes at the bottom of the tank evenly disperse ozone into the water through an ozone diffuser; ozone, with its strong oxidizing properties, destroys the cell membranes, proteins, and nucleic acid structures of microorganisms in the water, while decomposing some organic pollutants, achieving preliminary sterilization and water purification; the ozone-treated water continues to flow in the tank, and multiple sets of ultraviolet lamps arranged neatly at the other end of the tank provide comprehensive irradiation of the water.

[0030] The above embodiments merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. Furthermore, in these embodiments, "up," "down," "left," "right," "front," and "back" represent relative positions only, not absolute positions. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An integrated online desalination system for circulating water, comprising a sand filter (1), a desalination mechanism (2), and a sterilization mechanism (3) connected in sequence, characterized in that: The sand filtration mechanism (1) includes a sand filter tank (4) with multiple layers of filter media inside. The upper side of the sand filter tank (4) has a sewage inlet pipe assembly (5), and the lower side of the sand filter tank (4) has a sewage outlet pipe assembly (6). The desalination mechanism (2) includes a desalination tank (7). The sewage outlet pipe assembly (6) is connected to the lower end of the desalination tank (7). The desalination tank (7) is provided with an annular electrode assembly (8). The desalination tank (7) is provided with a scraper assembly (9) for scraping crystals on the electrode surface inside the electrode assembly (8). The upper liquid outlet of the desalination tank (7) is connected to the sterilization mechanism (3) via a pipeline.

2. The integrated online desalination system for circulating water according to claim 1, characterized in that: The wastewater feed pipe assembly (5) includes a sand filter pump (10) located on one side of the sand filter tank (4). The output end of the sand filter pump (10) is connected to a wastewater inlet pipe (11) connected to the side of the sand filter tank (4). A liquid inlet valve (12) is provided on the wastewater inlet pipe (11).

3. The integrated online desalination system for circulating water according to claim 2, characterized in that: The inlet pipe (11) is also equipped with a three-way reversing valve (13), one end of which is connected to a flushing inlet pipe (14) at the lower end of the sand filter tank (4); the upper end of the back side of the sand filter tank (4) is equipped with a flushing outlet pipe (15), and the bottom of the sand filter tank (4) is equipped with a drain pipe (16) connected to the flushing outlet pipe (15).

4. The integrated online desalination system for circulating water according to claim 1, characterized in that: The electrode assembly (8) includes an anode sleeve (17) disposed inside a desalination tank (7). A lower bracket (18) is provided inside the desalination tank (7). A cathode sleeve (40) is provided on the lower bracket (18) and is coaxially disposed with the anode sleeve (17). The cathode sleeve (40) is disposed outside the anode sleeve (17), and a desalination space is formed between the anode sleeve (17) and the cathode sleeve (40). The upper ends of the anode sleeve (17) and the cathode sleeve (40) are provided with threaded rods (19), and a fixing nut (20) is provided on the upper surface of the desalination tank (7) on the threaded rods (19).

5. The integrated online desalination system for circulating water according to claim 4, characterized in that: The scraper assembly (9) includes a scraper motor (21) located at the upper end of the desalination tank (7). The output end of the scraper motor (21) is connected to a drive shaft (22) that passes through the interior of the desalination tank (7). The end of the drive shaft (22) is connected to the lower bracket (18) via a bearing. The end of the drive shaft (22) is fitted with an annular scraper (23) for scraping off crystals formed on the electrode surface in the desalination space via a bushing.

6. The integrated online desalination system for circulating water according to claim 4, characterized in that: The lower bracket (18) is provided with a plurality of stepped blocks (24) around the drive shaft (22) for supporting the cathode sleeve (40).

7. The integrated online desalination system for circulating water according to claim 3, characterized in that: The desalination tank (7) has a sewage pipe (25) at the bottom, which is connected to the sewage pipe (16).

8. The integrated online desalination system for circulating water according to claim 1, characterized in that: The sterilization mechanism (3) includes a box (26), one end of which has a water inlet pipe (27), and the back side of the box (26) has a water outlet pipe (28). Multiple holes at the bottom of the box (26) have an air outlet pipe (29) connected to the ozone generating mechanism. The port of the air outlet pipe (29) has an ozone diffuser (30) installed inside the box (26). The other end of the box (26) is provided with multiple ultraviolet lamp groups (31) arranged in a neat manner. The irradiation end of the ultraviolet lamp group (31) is installed inside the box (26). The box (26) is provided with a support member (32) for supporting the ultraviolet lamp group (31).

9. The integrated online desalination system for circulating water according to claim 8, characterized in that: The ultraviolet lamp assembly (31) includes a transparent tube sleeve (33) that passes through the side hole of the housing (26) and the support member (32). A lamp tube (34) is provided inside the transparent tube sleeve (33). One end of the lamp tube (34) is connected to a connector (35). A rotatable plug cap (36) is provided on the connector cap (35). The plug cap (36) is connected to one end of the transparent tube sleeve (33) by threads.

10. The integrated online desalination system for circulating water according to claim 9, characterized in that: The support member (32) includes a partition (37) disposed inside the box (26), with a first support plate (38) on both sides of the partition (37) and a second support plate (39) on the inner wall of the box (26); part of the transparent tube sleeve (33) passes through the first support plate (38), and another part of the transparent tube sleeve (33) passes through the second support plate (39); the first support plate (38) and the second support plate (39) are staggered.

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