Whole-process cleaning treatment system for circulating water

Abstract

The utility model provides a circulating water whole-process cleaning treatment system, which relates to the technical field of water purification treatment and comprises a heat exchanger, a circulating water pipe and a cleaning pipe, the two ends of the circulating water pipe are connected to the cooling tower. A circulating water pump, a flow divider and a heat exchanger are sequentially arranged on the circulating water pipe. One end of the cleaning pipe is connected to the flow divider, and the other end is connected to the circulating water pipe. The cleaning treatment system has the beneficial effects that the circulating water pump of the cleaning treatment system can form circulating water flow in the circulating water pipe, so that heat absorbed by the heat exchanger can be dissipated through the cooling tower; part of water in the circulating water pipe can flow into the cleaning pipe through the flow divider, the electrocatalytic oxidation unit, the filter and the capacitive deionization unit on the cleaning pipe can efficiently degrade organic matter, ammonia nitrogen, chloride ions and heavy metal ions and conduct synchronous sterilization and disinfection, scaling of the inner wall of the circulating water pipe and the inner wall of the heat exchanger is prevented, and the water discharge amount and the water supplementing amount are greatly reduced; and the water cost of an enterprise is obviously reduced.

Description

Technical Field

[0001] This utility model relates to the field of water purification technology, and in particular to a whole-process cleaning system for circulating water. Background Technology

[0002] In industrial circulating water systems, the treatment and reuse of circulating water are crucial for ensuring the long-term stable operation of equipment. Circulating water is typically cooled by spraying from outdoor cooling towers. During this process, various impurities, such as organic matter, microorganisms, silt, and dust, can easily enter the water. Furthermore, the concentration of calcium, magnesium, copper, and iron ions in the water increases due to evaporation, forming scale that adheres to the surfaces of pipes and equipment. This reduces heat exchange efficiency, increases energy consumption, and can easily lead to problems such as decreased equipment efficiency, corrosion, scaling, and microbial growth.

[0003] Traditional circulating water treatment technologies mainly rely on chemical agents (such as scale inhibitors, corrosion inhibitors, and bactericides) or large-scale water replenishment and replacement to achieve water quality control. However, the use of chemical agents can easily lead to secondary pollution of water bodies, and the residues of these agents pose a potential threat to the ecological environment and human health. Furthermore, large-scale water replenishment and replacement require frequent wastewater discharge and replenishment, resulting in serious water waste and high operating costs.

[0004] Therefore, there is an urgent need for an efficient, environmentally friendly, and low-cost circulating water treatment technology to clean circulating water. Utility Model Content

[0005] In view of this, the present invention provides a circulating water whole-process cleaning treatment system, including a cooling tower, circulating water pipes and cleaning pipes;

[0006] Both ends of the circulating water pipe are connected to the cooling tower, and a circulating water pump, a distributor, and a heat exchanger are sequentially installed on the circulating water pipe; one end of the cleaning pipe is connected to the distributor, and the other end is connected to the circulating water pipe between the cooling tower and the heat exchanger.

[0007] The cleaning tube is sequentially equipped with an electrocatalytic oxidation unit, a filter, and a capacitor deionization unit.

[0008] The filter includes an outer shell with an axially arranged water flow channel. Both ends of the water flow channel are connected to cleaning pipes, and a filter core is embedded in the middle of the water flow channel.

[0009] The outer casing is also provided with a backwash port and a drain port. Both the backwash port and the drain port are connected to the water flow channel. The backwash port and the drain port are respectively connected to the two sides of the filter core. The backwash port is connected to the capacitor deionization unit through a backwash pipe. A backwash pump is provided on the backwash pipe.

[0010] Furthermore, the cleaning tube is also equipped with a one-way valve, which is located between the electrocatalytic oxidation unit and the filter.

[0011] Furthermore, the circulating water pipe is also provided with a first tee connector, and the end of the cleaning pipe is connected to the circulating water pipe through the first tee connector.

[0012] Furthermore, the cleaning tube is also equipped with a shut-off valve, which is located between the first tee connector and the capacitor deionization unit.

[0013] Furthermore, the outer shell includes two half-shells, and the inner walls of the two half-shells are respectively provided with two mounting half-grooves. The two mounting half-grooves are used to close together to form a filter element mounting groove, and the filter element is installed in the filter element mounting groove.

[0014] Furthermore, each of the two half-shells is provided with a connecting flange at its end, and the two connecting flanges are connected by fastening bolts. The backflush port and the drain port are respectively located on the two half-shells.

[0015] Furthermore, the filter core includes a filter housing, a first filter screen, a second filter screen, and filter packing. The filter housing has a cylindrical structure, the first filter screen and the second filter screen respectively seal both ends of the filter housing, and the filter packing fills the filter housing.

[0016] Furthermore, the aperture of the first filter screen is smaller than that of the second filter screen, and the second filter screen is located inside the half-shell with a backflush port.

[0017] Furthermore, a sealing gasket is provided between the two half-shells.

[0018] Furthermore, the sewage outlet is also equipped with a sealing cover.

[0019] The beneficial effects of this utility model's circulating water whole-process cleaning and treatment system are as follows:

[0020] (1) The circulating water pump of the cleaning system of this utility model can form a circulating water flow in the circulating pipe, so that the heat absorbed by the heat exchanger can be dissipated through the cooling tower. In addition, the distributor can divert part of the water in the circulating water pipe into the cleaning pipe. The electrocatalytic oxidation unit on the cleaning pipe can efficiently degrade organic matter, ammonia nitrogen, chloride ions and heavy metal ions through electrolytic catalytic oxidation, and simultaneously sterilize and disinfect. The filter on the cleaning pipe can filter the scale generated by the electrocatalytic oxidation unit during the electrolytic catalytic process and the impurities mixed in during the cooling tower spray cooling process. The capacitor deionization unit on the cleaning pipe removes hardness ions in the circulating water through electrocoagulation reaction, preventing scale from forming on the circulating water pipe and the inner wall of the heat exchanger. This cleaning system cleans the circulating water without stopping the machine, greatly reducing the amount of external drainage and water replenishment, and the water saving rate can reach more than 50%, significantly reducing the enterprise's water cost.

[0021] (2) The cleaning system of this utility model cleans the circulating water by electrochemical methods such as electrocatalytic oxidation and capacitive deionization. It can remove various components that are harmful to the circulating water system, such as hardness, heavy metal ions, suspended solids, turbidity, chloride ions, and salt content, in situ. It can replace traditional chemical agents, with no chemical additives throughout the process, and completely eliminates the risk of secondary pollution.

[0022] (3) In the cleaning system of this utility model, the filter is connected to the capacitor deionization unit through the backwash pipe. The backwash pump on the backwash pipe can use the high-salt wastewater generated by the capacitor deionization unit to backwash the filter, ensuring that the cleaning system can be maintained for a long time and is easy to maintain. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a circulating water whole-process cleaning treatment system according to an embodiment of the present invention.

[0024] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0025] Figure 3 This is a cross-sectional view of the filter core of a circulating water whole-process cleaning treatment system according to an embodiment of this utility model.

[0026] In the above diagram: 1-Cooling tower, 2-Circulating water pipe, 21-Circulating water pump, 22-Diverter, 23-Heat exchanger, 24-First tee connector, 25-Make-up water pipe, 26-Make-up water pump, 3-Cleaning pipe, 31-Check valve, 32-Stop valve, 4-Electrocatalytic oxidation unit, 5-Capacitor deionization unit, 51-Backflush pipe, 52-Backflush pump, 6-Filter, 61-Half-shell, 62-Backflush port, 63-Drain port, 7-Filter core, 71-Filter housing, 72-First filter screen, 73-Second filter screen, 8-Filter packing. Detailed Implementation

[0027] To make the objectives, technical solutions and advantages of this utility model clearer, the embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0028] Please refer to Figures 1 to 3 The present invention provides a circulating water whole-process cleaning treatment system, including a cooling tower 1, a circulating water pipe 2, and a cleaning pipe 3.

[0029] The circulating water pipe 2 is connected to the cooling tower 1 at both ends. A circulating water pump 21, a distributor 22, and a heat exchanger 23 are sequentially mounted on the circulating water pipe. One end of the cleaning pipe 3 is connected to the distributor 22, and the other end is connected to the circulating water pipe 2 between the cooling tower 1 and the heat exchanger. The circulating water pump 21 provides power for the flow of circulating water, causing the circulating water in the circulating water pipe 2 to circulate between the cooling tower 1 and the heat exchanger. One end of the cleaning pipe 3 is connected to the distributor 22, and the other end is connected to the circulating water pipe 2 between the cooling tower 1 and the heat exchanger 23. The circulating water pipe 2 is also equipped with a first tee connector 24, located between the cooling tower 1 and the heat exchanger 23. The end of the cleaning pipe 3 is connected to the circulating water pipe 2 through the first tee connector 24. This allows the cleaning pipe 3 to form a circulation branch. The diverter 22 is used to control the diversion ratio of the circulating water pipe 2 relative to the circulating water pipe 2. In this embodiment, the flow rate ratio in the cleaning pipe 3 is 2%-5% of the flow rate in the circulating water pipe 2 (the flow rate before diversion).

[0030] The cleaning tube 3 is sequentially equipped with an electrocatalytic oxidation unit 4, a filter 6, and a capacitor deionization unit 5. The electrocatalytic oxidation unit 4 is used to remove organic matter and heavy metal ions, and to sterilize. Specifically, the electrocatalytic oxidation unit 4 contains an electrolytic cathode plate and an electrolytic anode plate connected to an electrolysis power source. The electrolytic anode plate can be a titanium-based ruthenium-iridium electrode plate, etc. The electrolytic cathode plate is made of highly conductive stainless steel, such as 304, 316 / 316L, etc. A scraper is also provided outside the electrolytic cathode plate. A cylinder is also provided outside the shell of the electrocatalytic oxidation unit 4 to drive the scraper to move up and down. When the electrocatalytic oxidation unit 4 is energized, its electrolytic anode plate generates highly oxidizing hydroxyl radicals, thereby achieving the purpose of removing organic matter and sterilizing. Furthermore, the electrolysis process causes some heavy metal ions to be adsorbed and precipitated on the electrolytic cathode plate. The scraper can scrape off the precipitate on the electrolytic cathode plate under the drive of the cylinder. It should be noted that the electrocatalytic oxidation unit 4 is existing technology, and its internal structure is not described in detail here.

[0031] The filter 6 includes a housing 61, which has an axially arranged water flow channel. Both ends of the water flow channel are connected to the cleaning pipe 3, and a filter element 7 is embedded in the middle of the water flow channel. The filter 6 is used to adsorb and remove solid impurities from the water in the cleaning pipe 3.

[0032] The electro-deionization unit 5 contains a capacitor anode plate and a capacitor cathode plate connected to a power source. The electrode materials of the capacitor anode plate and capacitor cathode plate are carbon-based materials (such as activated carbon, carbon nanotubes, graphene, etc.), possessing a large specific surface area and good conductivity. When the capacitor anode plate and capacitor cathode plate are operating, they adsorb and store ions with opposite charges, thereby reducing the ion concentration in the water flow and continuously producing fresh water. Furthermore, when the capacitor anode plate and capacitor cathode plate in the electro-deionization unit 5 are reverse-connected, they can release the adsorbed charged ions, resulting in wastewater with a high ion concentration within the electro-deionization unit 5. It should be noted that the electro-deionization unit 5 is existing technology, and its internal structure will not be described in detail here.

[0033] In operation, the circulating water whole-process cleaning system of this utility model uses the circulating water pump 21 to create a circulating water flow in the circulating pipe 2, allowing the heat absorbed by the heat exchanger 23 to be dissipated through the cooling tower 1. Furthermore, the distributor 22 directs a portion of the water from the circulating water pipe 2 into the cleaning pipe 3. The electrocatalytic oxidation unit 4 on the cleaning pipe 3 efficiently degrades organic matter, ammonia nitrogen, chloride ions, and heavy metal ions (such as Fe) through electrolytic catalytic oxidation. 3+ Cu 2+ Simultaneously sterilize and disinfect; the filter 6 on the cleaning pipe 3 can filter the scale generated by the electrocatalytic oxidation unit 4 during the electrolytic catalysis process and the impurities mixed in during the cooling process of the cooling tower 1 spray cooling; the capacitor deionization unit 5 on the cleaning pipe 3 removes hardness ions (Ca) from the circulating water through electrocoagulation reaction. 2+ Mg 2+ This system prevents scale buildup on the inner walls of circulating water pipes 2 and heat exchangers 23. It cleans the circulating water without shutting down the system, significantly reducing external drainage and makeup water volume, achieving water savings of over 50% and substantially lowering water costs for businesses. The system uses electrochemical methods such as electrocatalytic oxidation and capacitive deionization to clean the circulating water, removing harmful components like hardness, heavy metal ions, suspended solids, turbidity, chloride ions, and salt content in situ. It replaces traditional chemical agents, requires no chemical additives, and completely eliminates the risk of secondary pollution.

[0034] In a preferred embodiment, the circulating water pipe 2 is further provided with a second tee connector, which is located between the first tee connector and the cooling tower 1. A water supply pipe 25 is connected to the second tee connector, and the other end of the water supply pipe 25 is used to connect to a clean water source. A water supply pump 26 is also provided on the water supply pipe, which is used to replenish clean circulating water into the circulating water pipe 2.

[0035] In a preferred embodiment, the outer casing 61 is further provided with a backflushing port 62 and a drain port 63, and the drain port 63 is further provided with a sealing cover. The drain port 63 is closed by the sealing cover during normal operation; when drainage is required, the sealing cover can be opened and a drain pipe connected. Both the backflushing port 62 and the drain port 63 are connected to the water flow channel, and are respectively connected to both sides of the filter core 7. The backflushing port 62 is connected to the capacitor deionization unit 5 through a backflushing pipe 51, and a backflushing pump 52 is provided on the backflushing pipe 51. The cleaning pipe 3 is also provided with a one-way valve 31, which is located between the electrocatalytic oxidation unit 4 and the filter 6. The cleaning pipe 3 is also provided with a shut-off valve 32, which is located between the first three-way connector 24 and the capacitor deionization unit 5.

[0036] This cleaning system can also periodically backwash the filter 6. Specifically, when backwashing is required, the shut-off valve 32 is closed (while the circulating water pump 21 can still continue to operate), the drain port 63 is opened, and the power supply to the capacitor deionization unit 5 is reversed, generating high-ion-concentration water within the capacitor deionization unit 5. The backwash pump 52 is then started, pumping the high-ion-concentration water from the capacitor deionization unit 5 to the backwash port 62 on the outer casing 61. This high-ion-concentration water can then backwash the filter element 7. During the backwashing process, not only is the high-ion-concentration water from the capacitor deionization unit 5 discharged, but impurities adsorbed by the filter element 7 are also discharged from the drain port 63. This backwashing structure ensures that the cleaning system can operate continuously for extended periods and is easy to maintain.

[0037] In a preferred embodiment, the outer casing 61 includes two half-shells 61, with a sealing gasket between the two half-shells 61. Each half-shell 61 has a connecting flange at its end, and the two connecting flanges are connected by fastening bolts. The backflush port 62 and the drain port 63 are respectively located on the two half-shells 61. The inner walls of each half-shell 61 have two mounting grooves, which are used to close together to form a filter element mounting groove, in which the filter element 7 is installed. This filter 6 structure ensures that the filter element 7 can be easily replaced and that the water flushed into the backflush port 62 can back-impact the filter element 7.

[0038] In a preferred embodiment, the filter element 7 includes a filter housing 71, a first filter screen 72, a second filter screen 73, and filter media 8. The filter housing 71 has a cylindrical structure, with the first filter screen 72 and the second filter screen 73 respectively sealing both ends of the filter housing 71. The filter media 8 fills the filter housing 71. The pore size of the first filter screen 72 is smaller than that of the second filter screen 73, and the second filter screen 73 is located within the half-housing 61 equipped with a backwash port 62. During normal operation of the circulating water whole-process cleaning system, water in the cleaning pipe 3 flows sequentially through the first filter screen 72, the filter media 8, and the second filter screen 73. Impurities in the water in the cleaning pipe 3 pass through the first filter screen 72 and are adsorbed by the filter media 8, while the second filter screen 73 ensures that impurities are trapped. During backwashing, impurities in the filter media 8 are flushed out of the filter element 7 and discharged from the drain port 63. This filter element 7 can effectively filter solid impurities while ensuring the backwashing effect, thereby extending the service life of the filter element 7 and reducing the replacement frequency of the filter element 7.

[0039] In this document, the directional terms such as front, back, top, and bottom are defined based on the location of the components in the accompanying drawings and their relative positions to each other, solely for the purpose of clarity and convenience in expressing the technical solution. It should be understood that the use of these directional terms should not limit the scope of protection claimed in this application.

[0040] Where there is no conflict, the above embodiments and features described herein can be combined with each other.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A circulating water whole-process cleaning and treatment system, characterized in that: Includes a cooling tower (1), circulating water pipes (2), and cleaning pipes (3); Both ends of the circulating water pipe (2) are connected to the cooling tower (1). The circulating water pipe (2) is equipped with a circulating water pump (21), a distributor (22) and a heat exchanger (23) in sequence. One end of the cleaning pipe (3) is connected to the distributor (22), and the other end is connected to the circulating water pipe (2) between the cooling tower (1) and the heat exchanger (23). The cleaning tube (3) is sequentially equipped with an electrocatalytic oxidation unit (4), a filter (6), and a capacitor deionization unit (5); The filter (6) includes an outer shell, which has a water flow channel in the axial direction. Both ends of the water flow channel are connected to the cleaning pipe (3), and a filter core (7) is embedded in the middle of the water flow channel. The outer casing is also provided with a backwash port (62) and a drain port (63). Both the backwash port (62) and the drain port (63) are connected to the water flow channel. The backwash port (62) and the drain port (63) are respectively connected to the two sides of the filter core (7). The backwash port (62) is connected to the capacitor deionization unit (5) through a backwash pipe (51). A backwash pump (52) is provided on the backwash pipe (51).

2. The circulating water whole-process cleaning and treatment system according to claim 1, characterized in that: The cleaning pipe (3) is also provided with a one-way valve (31), which is located between the electrocatalytic oxidation unit (4) and the filter (6).

3. The circulating water whole-process cleaning and treatment system according to claim 1, characterized in that: The circulating water pipe (2) is also provided with a first tee connector (24), and the end of the cleaning pipe (3) is connected to the circulating water pipe (2) through the first tee connector (24).

4. The circulating water whole-process cleaning and treatment system according to claim 3, characterized in that: The cleaning tube (3) is also equipped with a shut-off valve (32), which is located between the first tee connector (24) and the capacitor deionization unit (5).

5. The circulating water whole-process cleaning and treatment system according to claim 1, characterized in that: The outer shell includes two half shells (61), and the inner walls of the two half shells (61) are respectively provided with two mounting half grooves. The two mounting half grooves are used to close together to form a filter element mounting groove, and the filter element (7) is installed in the filter element mounting groove.

6. The circulating water whole-process cleaning and treatment system according to claim 5, characterized in that: The ends of the half-shell (61) are respectively provided with connecting flanges, and the two connecting flanges are connected by fastening bolts. The backflush port (62) and the sewage discharge port (63) are respectively located on the two half-shells (61).

7. The circulating water whole-process cleaning and treatment system according to claim 6, characterized in that: The filter core (7) includes a filter housing (71), a first filter screen (72), a second filter screen (73), and a filter filler (8). The filter housing (71) is a cylindrical structure. The first filter screen (72) and the second filter screen (73) respectively seal the two ends of the filter housing (71). The filter filler (8) is filled inside the filter housing (71).

8. The circulating water whole-process cleaning and treatment system according to claim 7, characterized in that: The aperture of the first filter screen (72) is smaller than that of the second filter screen (73), and the second filter screen (73) is located inside the half-shell (61) with the backflush port (62) installed.

9. The circulating water whole-process cleaning and treatment system according to claim 5, characterized in that: A sealing gasket is also provided between the two half-shells (61).

10. The circulating water whole-process cleaning and treatment system according to claim 1, characterized in that: The sewage outlet (63) is also equipped with a closed cover.

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