Closed circulating water spray pretreatment system

Abstract

The utility model discloses a closed circulating water spray pretreatment system which comprises a filtering device, a reverse osmosis device, a spray water booster pump, a sterilization device, a high-pressure spray water pump and a spray nozzle which are sequentially connected, the filtering device is used for being connected with a water source, and the filtering device is used for filtering incoming water of the water source. The reverse osmosis device is used for carrying out reverse osmosis treatment on the filtered water, the spray water booster pump is used for carrying out pressurization treatment on the produced water subjected to the reverse osmosis treatment, and the sterilization device is used for adding a bactericide into the pressurized produced water for sterilization treatment to form spray water; the high-pressure spray water pump is used for conveying the sterilized spray water to the spray nozzle, and the spray nozzle is used for being matched with the closed circulating water system to cool the closed circulating water system. The water inlet quality of the spray nozzle can be improved, dirt blockage of the spray nozzle is avoided, long-term standard-reaching stable operation of water supply of closed circulating water is guaranteed, the maintenance and replacement cost is saved, and the spray water cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a closed-circulation water spray pretreatment system. Background Art

[0002] In the water treatment industry, closed-loop water systems require cooling through spray systems during high summer temperatures. Conventional spray systems in the prior art feed desalted water into a spray pool, which is then pressurized by a spray pump and atomized into spray nozzles. This enhances the heat exchange efficiency of the air cooler and reduces the return temperature of the circulating water. Due to the high summer temperatures, microorganisms proliferate in the spray pool, and dust and sand that fall into the pool can easily clog the spray nozzles, resulting in poor atomization and a failure to achieve cooling. This results in the closed-loop water system's feedwater temperature failing to meet the operational requirements of the plant's main process units. Maintaining the closed-loop water system requires significant annual labor and material resources to replace the spray nozzles, significantly increasing the system's maintenance and replacement costs. Furthermore, desalted water is prepared by mixing process condensate, turbine condensate, and raw water into a desalted water tank. This desalted water is then pumped to various devices, resulting in a temperature typically between 35°C and 40°C. This high temperature is detrimental to cooling the closed-loop water system. Utility Model Content

[0003] Based on this, it is necessary to provide a closed-loop water spray pretreatment system. The utility model of the closed-loop water spray pretreatment system can improve the water quality of the nozzle inlet, avoid the nozzle from being blocked by dirt, ensure the long-term stable operation of the closed-loop water supply, save the cost of inspection, maintenance and replacement, and reduce the cost of spray water per ton.

[0004] An embodiment of the present application provides a closed-loop water spray pretreatment system.

[0005] A closed-loop water spray pretreatment system comprises a filter device, a reverse osmosis device, a spray water booster pump, a sterilizing device, a high-pressure spray water pump and a spray nozzle connected in sequence, wherein the filter device is used to connect to a water source, the filter device is used to filter the incoming water from the water source, the reverse osmosis device is used to perform reverse osmosis treatment on the filtered water after filtration, the spray water booster pump is used to pressurize the produced water after the reverse osmosis treatment, the sterilizing device is used to add a bactericide to the pressurized produced water for sterilization to form spray water, the high-pressure spray water pump is used to transport the sterilized spray water to the spray nozzle, and the spray nozzle is used to cooperate with the closed-loop water system to achieve cooling of the closed-loop water system.

[0006] In some embodiments, the filtering device includes a sand filtering device, which is connected between the water source and the infiltration device. The sand filtering device is used to filter the water from the water source to remove large particles of impurities in the water.

[0007] In some embodiments, the filtration device further includes an ultrafiltration device, which is connected between the sand filtration device and the osmosis device. The ultrafiltration device is used to perform ultrafiltration treatment on the produced water after filtration by the sand filtration device to remove suspended impurities, colloids and microorganisms in the water.

[0008] In some embodiments, the filtering device also includes a safety filter, which is connected between the sterilization device and the high-pressure spray water pump. The safety filter is used to remove large particle impurities and sterilized microbial corpses in the spray water formed by the sterilization treatment of the sterilization device.

[0009] In some embodiments, the filter diameter of the security filter is 3 μm to 5 μm.

[0010] In some embodiments, the sterilization device includes a sterilant pipeline mixer.

[0011] In some embodiments, the closed-loop water spray pretreatment system further includes a raw water tank connected between the water source and the filtering device, and the raw water tank is used to store raw water from the water source.

[0012] In some embodiments, the raw water tank also collects the falling water after being sprayed by the spray nozzle through a collecting device.

[0013] In some embodiments, the water source of the raw water tank includes recycled wastewater.

[0014] In some embodiments, the closed-loop water spray pretreatment system further includes a reverse osmosis water production tank, which is connected between the reverse osmosis device and the spray water booster pump.

[0015] The above-mentioned closed-loop water spray pretreatment system, through optimization and improvement and the addition of a spray pretreatment device, improves the water quality of the nozzle inlet, avoids fouling and clogging of the spray nozzle, ensures the long-term stable operation of the closed-loop water supply, and saves the inspection, maintenance and replacement costs of the closed-loop water spray system. Due to the addition of spray pretreatment facilities, the above-mentioned closed-loop water spray pretreatment system can appropriately reduce the water quality of the spray water, thereby reducing the cost of spray water per ton. Furthermore, the above-mentioned closed-loop water spray pretreatment system recycles the groundwater generated by the spray system, which can effectively reduce the temperature of the spray water, further facilitating the cooling of the closed-loop water and ensuring the closed-loop water supply temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0017] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings. In the following description, the same reference numerals represent the same parts.

[0018] Figure 1 This is a schematic diagram of a closed-loop water spray pretreatment system according to an embodiment of the present invention.

[0019] Description of Reference Numerals

[0020] 10. Closed-loop water spray pretreatment system; 100. Filtration device; 101. Sand filtration device; 102. Ultrafiltration device; 103. Safety filter; 200. Reverse osmosis device; 300. Spray water booster pump; 400. Sterilization device; 500. High-pressure spray water pump; 600. Spray nozzle; 700. Raw water tank; 800. Reverse osmosis aquatic water tank. DETAILED DESCRIPTION

[0021] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0023] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0024] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0025] In the description of this utility model, "several" means more than one, "plurality" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of the terms "first" and "second" is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are for the purpose of describing specific embodiments only and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] As used herein, "optionally," "optional," and "optional" mean optional, meaning that the option is selected from either of the two parallel options of "with" or "without." If multiple "optional" options appear in a technical solution, each option is independent unless otherwise specified and there are no contradictions or mutual constraints. In this application, expressions such as "optionally contain" and "optionally include" mean "contain or not contain."

[0028] In this application, when referring to a numerical interval (i.e., a numerical range), unless otherwise specified, the distribution of the optional numerical values ​​within the numerical interval is deemed to be continuous and includes the two numerical endpoints of the numerical interval (i.e., the minimum and maximum values), as well as each numerical value between the two numerical endpoints. Unless otherwise specified, when a numerical interval refers only to integers within the numerical interval, it includes the two endpoint integers of the numerical range, as well as each integer between the two endpoints, which is equivalent to directly listing each integer. When multiple numerical ranges are provided to describe a feature or characteristic, these numerical ranges can be combined. In other words, unless otherwise specified, the numerical ranges disclosed in this application should be understood to include any and all subranges included therein. The "numerical value" in the numerical interval can be any quantitative value, such as a number, percentage, ratio, etc. "Numerical interval" is broadly allowed to include quantitative intervals such as percentage intervals, ratio intervals, and ratio intervals.

[0029] The present embodiment provides a closed-loop water spray pretreatment system 10 to address the existing problem of requiring significant annual labor and material investment in replacing spray nozzles 600, significantly increasing the system's maintenance and replacement costs. Furthermore, the desalted water used in existing closed-loop water systems typically has a temperature between 35°C and 40°C, making it difficult to cool the system. The closed-loop water spray pretreatment system 10 is described below with reference to the accompanying drawings.

[0030] The closed-loop water spray pretreatment system 10 provided in the embodiment of the present application is exemplary, see Figure 1 As shown, Figure 1 Schematic diagram of the structure of the closed-circulation water spray pretreatment system 10 provided in an embodiment of the present application. The closed-circulation water spray pretreatment system 10 of the present application can be used for cooling a closed-circulation water system.

[0031] In order to more clearly illustrate the structure of the closed-loop water spray pretreatment system 10 , the closed-loop water spray pretreatment system 10 will be introduced below with reference to the accompanying drawings.

[0032] For example, see Figure 1As shown, a closed-loop water spray pretreatment system 10 includes a filter device 100, a reverse osmosis device 200, a spray water booster pump 300, a sterilizing device 400, a high-pressure spray water pump 500, and a spray nozzle 600, which are connected in sequence. The filter device 100 is used to connect to a water source. The filter device 100 is used to filter the incoming water from the water source. The reverse osmosis device 200 is used to perform reverse osmosis treatment on the filtered water. The spray water booster pump 300 is used to pressurize the produced water after reverse osmosis treatment. The sterilizing device 400 is used to add a sterilant to the pressurized produced water for sterilization to form spray water. The high-pressure spray water pump 500 is used to transport the sterilized spray water to the spray nozzle 600. The spray nozzle 600 is used to cooperate with the closed-loop water circulation system to achieve cooling of the closed-loop water circulation system.

[0033] The closed-loop water spray pretreatment system 10, through optimization and improvement, incorporates a spray pretreatment device to improve the water quality of the nozzle inlet, avoid clogging of the spray nozzle 600, and ensure long-term stable operation of the closed-loop water supply while reducing the cost of inspection, maintenance, and replacement of the closed-loop water spray system. The addition of the spray pretreatment facility allows the closed-loop water spray pretreatment system 10 to appropriately improve the quality of the incoming spray water, thereby reducing the cost per ton of spray water.

[0034] In some embodiments, the filtration device 100 includes a sand filtration device 101. Sand filtration device 101 is connected between a water source and an osmosis device. Sand filtration device 101 is used to filter incoming water from the source to remove large particles of impurities. Sand filtration device 101 is used in drinking water treatment to remove suspended matter from the water source and improve water quality. It is also used in sewage treatment as a deep treatment method after secondary treatment to further purify water quality.

[0035] The sand filter device 101 is a common water treatment technology, mainly used to remove suspended solids, colloidal substances and some dissolved organic matter in water. It is widely used in drinking water treatment, wastewater treatment, industrial water purification and other fields. The following are some basic features and working principles of the sand filter device 101: The working principle includes: (1) Filtration process: Raw water enters the top of the sand filter through the water inlet pipe and then flows downward through the filter material layer (mainly quartz sand). In this process, suspended solids and colloidal substances in the water are intercepted by the filter material, and clean water flows out from the bottom and is discharged through the outlet pipe. (2) Backwashing process: As the filtration proceeds, impurities will gradually accumulate in the filter material layer, resulting in a decrease in filtration efficiency and an increase in head loss. Therefore, regular backwashing is required to remove dirt on the filter material. Backwashing is to reverse the direction of the water flow, that is, to flush the filter material layer from bottom to top, and remove the intercepted impurities from the filter tank.

[0036] In some embodiments, the sand filter device 101 comprises the following components: (1) filter media: typically a multi-layer structure, with the top layer being coarse sand, the middle layer being fine sand, and the bottom layer being gravel. This design facilitates better interception of particles of different sizes. (2) water distribution system: including an inlet water distributor and an outlet water collector to ensure that the water flow is evenly distributed throughout the filter bed. (3) flushing system: used for backwashing operations, including a flushing water pump and corresponding pipeline valves. (4) support layer: located below the filter media, composed of larger-sized gravel, which supports the filter media and prevents it from being lost with the water flow.

[0037] In some embodiments, the filtration device 100 further includes an ultrafiltration device 102. The ultrafiltration device 102 is connected between the sand filtration device 101 and the osmosis device. The ultrafiltration device 102 is used to perform ultrafiltration treatment on the produced water after filtration by the sand filtration device 101 to remove suspended impurities, colloids, and microorganisms in the water.

[0038] In some embodiments, the filtration device 100 further includes a safety filter 103. The safety filter 103 is connected between the sterilization device 400 and the high-pressure spray water pump 500. The safety filter 103 is used to remove large particles of impurities and dead microorganisms from the spray water formed after the sterilization treatment by the sterilization device 400.

[0039] In some embodiments, the filter diameter of the security filter 103 is 3 μm-5 μm.

[0040] In some embodiments, the sterilization device 400 includes a sterilizing agent pipeline mixer. In this application, it is necessary to ensure the desalination rate of reverse osmosis. High conductivity of the reverse osmosis product water can easily lead to salt buildup and blockage in the closed-loop water heat exchange tube bundle, affecting the heat exchange effect. Therefore, adding a sterilizing agent pipeline mixer to add non-oxidizing sterilizing agents can effectively kill microorganisms and prevent their growth. Simultaneously, the design of a 5μm safety filter 103 before the high-pressure spray water pump 500 can effectively intercept microbial corpses, fine sand, and other impurities that could clog the spray nozzle 600, thereby preventing clogging of the closed-loop water spray nozzle 600.

[0041] In some embodiments, the closed-loop water spray pretreatment system 10 further includes a raw water tank 700. The raw water tank 700 is connected between the water source and the filter device 100, and is used to store raw water from the water source.

[0042] In some embodiments, the raw water tank 700 also collects the water that falls to the ground after spraying from the spray nozzle 600 through a collection device. The closed-loop water spray pretreatment system 10 recycles the water that falls to the ground generated by the spray nozzle 600, effectively reducing the temperature of the spray water, further facilitating cooling of the closed-loop water supply, and ensuring the closed-loop water supply temperature. The present application recycles the water that falls to the ground generated by the spray nozzle 600 back into the raw water tank 700, reprocesses it, and then sprays it, effectively reducing the temperature of the spray water to approximately 20°C, further facilitating cooling of the closed-loop water supply, and ensuring the closed-loop water supply temperature.

[0043] In some embodiments, the water source of the raw water tank 700 includes recycled wastewater. This application utilizes chemical recycled wastewater as the raw material for spray water preparation, achieving the reuse of chemical wastewater. This also reduces treatment costs compared to traditional chemical plant closed-loop water systems that use desalinated water for spray water, potentially saving approximately 1.5 yuan per ton in water treatment fees.

[0044] In some embodiments, the closed-loop water spray pretreatment system 10 further includes a reverse osmosis water production tank 800 . The reverse osmosis water production tank 800 is connected between the reverse osmosis device 200 and the spray water booster pump 300 .

[0045] In some embodiments, the reverse osmosis device 200 performs desalination treatment on the filtered water, the conductivity of the reverse osmosis water produced by the reverse osmosis device 200 is ≤50us / cm, and the reverse osmosis water produced by the reverse osmosis device 200 flows into the reverse osmosis water tank by gravity.

[0046] In summary, the closed-loop water spray pretreatment system 10 of the present application pre-treats the incoming water, improves the incoming water quality of the spray nozzle 600, avoids fouling and clogging of the spray nozzle 600, ensures the long-term stable operation of the closed-loop water supply, and saves the inspection, maintenance and replacement costs of the closed-loop water spray system. Compared with the traditional closed-loop water system that uses desalted water as water for spray cooling, resulting in a high cost per ton of water, the present application adds a spray pretreatment, which can appropriately reduce the water quality of the spray water, thereby reducing the cost per ton of spray water. Furthermore, the present application recycles the water that falls to the ground after the spray nozzle 600 is sprayed, and the water that falls to the ground is collected in the raw water tank 700. The temperature of the water that falls to the ground is relatively low, which can reduce the water temperature of the water source in the raw water tank 700, and can effectively reduce the temperature of the spray water, which is more conducive to cooling the closed-loop water and ensuring the closed-loop water supply temperature.

[0047] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0048] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A closed-loop water spray pretreatment system, characterized in that: It includes a filtering device, a reverse osmosis device, a spray water booster pump, a sterilizing device, a high-pressure spray water pump and a spray nozzle connected in sequence, the filtering device is used to connect to a water source, the filtering device is used to filter the incoming water from the water source, the reverse osmosis device is used to perform reverse osmosis treatment on the filtered water after filtration, the spray water booster pump is used to pressurize the produced water after reverse osmosis treatment, the sterilizing device is used to add a bactericide to the pressurized produced water for sterilization to form spray water, the high-pressure spray water pump is used to transport the sterilized spray water to the spray nozzle, and the spray nozzle is used to cooperate with a closed circulating water system to achieve cooling of the closed circulating water system.

2. The closed-loop water spray pretreatment system according to claim 1, characterized in that: The filtering device includes a sand filtering device, which is connected between the water source and the infiltration device. The sand filtering device is used to filter the water from the water source to remove large particles of impurities in the water.

3. The closed-loop water spray pretreatment system according to claim 2, characterized in that: The filtration device also includes an ultrafiltration device, which is connected between the sand filtration device and the osmosis device. The ultrafiltration device is used to perform ultrafiltration treatment on the produced water after filtration by the sand filtration device to remove suspended impurities, colloids and microorganisms in the water.

4. The closed-loop water spray pretreatment system according to claim 1, characterized in that: The filtering device also includes a safety filter, which is connected between the sterilization device and the high-pressure spray water pump. The safety filter is used to remove large particles of impurities and sterilized microbial corpses in the spray water formed by the sterilization treatment of the sterilization device.

5. The closed-loop water spray pretreatment system according to claim 4, characterized in that: The filter diameter of the security filter is 3 μm to 5 μm.

6. The closed-loop water spray pretreatment system according to any one of claims 1 to 5, characterized in that: The sterilization device includes a sterilant pipeline mixer.

7. The closed-loop water spray pretreatment system according to any one of claims 1 to 5, characterized in that: The closed-loop water spray pretreatment system further includes a raw water tank connected between the water source and the filtering device, and is used to store raw water from the water source.

8. The closed-loop water spray pretreatment system according to claim 7, characterized in that: The raw water tank also collects the falling water after being sprayed by the spray nozzle through the collecting device.

9. The closed-loop water spray pretreatment system according to claim 7, characterized in that: The water source of the raw water tank includes recycled wastewater.

10. The closed-circulation water spray pretreatment system according to any one of claims 1 to 5, 8 to 9, characterized in that: The closed-loop water spray pretreatment system further comprises a reverse osmosis water production tank, which is connected between the reverse osmosis device and the spray water booster pump.

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