Water treatment system for cooling tower

Abstract

The utility model discloses a water treatment system for a cooling tower, which relates to the technical field of water treatment, and comprises a condensing device, a cooling tower, a coarse filtering device and a membrane filtering device, the condensing device is used for condensing steam of a boiler into water; the cooling tower is provided with two water inlets and two water outlets, and one water inlet and one water outlet of the cooling tower are connected with the condensing device to form a circulating water cooling loop; a water inlet of the coarse filtering device is connected with the other water outlet of the cooling tower, and the coarse filtering device is used for filtering large particles in the circulating water; a water inlet of the membrane filtration device is connected with a water outlet of the coarse filtration device, the membrane filtration device is used for filtering small particles in circulating water, the membrane filtration device is provided with two water outlets, one water outlet of the membrane filtration device is connected with the other water inlet of the cooling tower, and the other water outlet of the membrane filtration device is connected with a water inlet of the coarse filtration device. Calcium carbonate in circulating water of the cooling tower can be effectively removed, and the cooling effect of the cooling tower is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, and particularly relates to a water treatment system for a cooling tower. Background Art

[0002] In industrial production, a cooling tower uses water as a circulating coolant to absorb heat from another system and discharge it into the atmosphere to reduce the water temperature. Considering cost factors, the circulating water in the cooling tower usually directly takes natural water from nature. The content of calcium ions in natural water is relatively high. After the cooling tower is used, a large amount of calcium carbonate will form and adhere to the inner wall of the tower, resulting in a significant reduction in the cooling effect of the cooling tower and affecting industrial production.

[0003] In the related art, a quartz sand filtration device is usually used to remove calcium carbonate in the circulating water of the cooling tower. However, the above solution can only remove large particle calcium carbonate and is difficult to remove small particle calcium carbonate. Over time, calcium carbonate is still likely to accumulate in the cooling tower, resulting in a poor cooling effect of the cooling tower. Summary of the Utility Model

[0004] An embodiment of the utility model provides a water treatment system for a cooling tower, which can solve the technical problem that small particle calcium carbonate in the existing circulating water of the cooling tower is difficult to remove, calcium carbonate is likely to accumulate, and the cooling effect of the cooling tower becomes poor.

[0005] An embodiment of the utility model provides a water treatment system for a cooling tower, including:

[0006] A condensation device for condensing the steam of the boiler into water;

[0007] A cooling tower having two water inlets and two water outlets. A connection between one water inlet and one water outlet of the cooling tower and the condensation device forms a circulating water cooling loop;

[0008] A coarse filtration device, whose water inlet is connected to the other water outlet of the cooling tower, for filtering large particles in the circulating water;

[0009] A membrane filtration device, whose water inlet is connected to the water outlet of the coarse filtration device. The membrane filtration device is used to filter small particles in the circulating water. The membrane filtration device has two water outlets. One water outlet of the membrane filtration device is connected to the other water inlet of the cooling tower, and the other water outlet of the membrane filtration device is connected to the water inlet of the coarse filtration device.

[0010] In some embodiments, the water treatment system for a cooling tower further includes:

[0011] A calcium removal device, whose water inlet is connected to the water outlet of the membrane filtration product water of the membrane filtration device, and the water outlet is connected to another water inlet of the cooling tower.

[0012] In some embodiments, a power pump is provided between the water outlet of the calcium removal device and the cooling tower.

[0013] In some embodiments, a regulating valve is further provided between the water outlet of the calcium removal device and the cooling tower.

[0014] In some embodiments, the calcium removal device is filled with calcium ion chelating resin.

[0015] In some embodiments, a fan is provided at the upper part of the cooling tower.

[0016] In some embodiments, the coarse filtration device is filled with quartz sand and activated carbon.

[0017] In some embodiments, a coarse filter screen is further provided at the water inlet of the coarse filtration device.

[0018] In some embodiments, a flushing assembly is provided in the membrane filtration device.

[0019] In some embodiments, the filter membrane of the membrane filtration device is a ceramic sintered membrane or an organic synthetic membrane.

[0020] The beneficial effects brought by the technical solution provided by the present utility model include:

[0021] The embodiment of the present utility model provides a water treatment system for a cooling tower. By setting a coarse filtration device and a membrane filtration device, the coarse filtration device coarsely filters large particle calcium carbonate in the cooling tower circulating water, and then the membrane filtration device filters and removes small particle calcium carbonate in the cooling tower circulating water to obtain membrane filtration product water. The calcium carbonate content in the membrane filtration product water is very low, and then it is introduced into the cooling tower for utilization. The present utility model can avoid the accumulation of calcium carbonate in the cooling tower and does not affect the cooling effect of the cooling tower. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 It is a schematic diagram of a water treatment system for a cooling tower provided by an embodiment of the present utility model;

[0024] In the figure: 1. Condensing device; 2. Cooling tower; 3. Coarse filtration device; 4. Membrane filtration device; 5. Calcium ion removal device; 6. Power pump; 7. Control valve; 8. Boiler; 9. Fan; 10. Coarse filter screen. Detailed implementation mode

[0025] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0026] The embodiment of the present utility model provides a water treatment system for a cooling tower, which can solve the technical problem that small particle calcium carbonate in the circulating water of the existing cooling tower is difficult to remove, and calcium carbonate accumulation is likely to occur, resulting in a poor cooling effect of the cooling tower.

[0027] See Figure 1 As shown, a water treatment system for a cooling tower includes: a condensing device 1, a cooling tower 2, a coarse filtration device 3 and a membrane filtration device 4.

[0028] The condensing device 1 is used to condense the steam of the boiler 8 into water. The cooling tower 2 is provided with two water inlets and two water outlets. A circulating water cooling loop is formed by connecting one water inlet and one water outlet of the cooling tower 2 to the condensing device 1. The water inlet of the coarse filtration device 3 is connected to the other water outlet of the cooling tower 2, and is used to filter large particles in the circulating water of the cooling tower. The water inlet of the membrane filtration device 4 is connected to the water outlet of the coarse filtration device 3. The membrane filtration device 4 is used to filter small particles in the circulating water. The membrane filtration device 4 is provided with two water outlets. One water outlet of the membrane filtration device 4 is connected to the other water inlet of the cooling tower 2, and the other water outlet of the membrane filtration device 4 is connected to the water inlet of the coarse filtration device 3. Among them, one water outlet of the membrane filtration device 4 is used to return the membrane filtration product water filtered by the membrane filtration device 4 to the cooling tower 2. One water outlet of the membrane filtration device 4 is used to return the membrane filtration concentrated water filtered by the membrane filtration device 4 to the coarse filtration device 3 for coarse filtration again.

[0029] In the water treatment system for a cooling tower in the embodiments of the present utility model, by providing a coarse filtration device 3 and a membrane filtration device 4, the coarse filtration device 3 coarsely filters large particle calcium carbonate in the circulating water of the cooling tower, and then the membrane filtration device 4 filters and removes small particle calcium carbonate in the circulating water of the cooling tower to obtain membrane filtration product water. The calcium carbonate content in the membrane filtration product water is very low, and then it is introduced into the cooling tower 2 for utilization. The present utility model can avoid the accumulation of calcium carbonate in the cooling tower 2 and does not affect the cooling effect of the cooling tower 2.

[0030] As an optional implementation manner, referring to Figure 1 As shown, the water treatment system for a cooling tower in the embodiments of the present utility model further includes a calcium ion removal device 5. The water inlet of the calcium ion removal device 5 is connected to the water outlet of the membrane filtration product water of the membrane filtration device 4, and the water outlet is connected to another water inlet of the cooling tower 2. The calcium ion removal device 5 can further remove calcium ions in the circulating water of the cooling tower. With the reduction of calcium ions, the calcium carbonate particles in the circulating water of the cooling tower can be reduced. Preferably, the calcium ion removal device 5 is filled with calcium ion chelating resin.

[0031] As an optional implementation manner, referring to Figure 1 As shown, a power pump 6 is provided between the water outlet of the calcium ion removal device 5 and the cooling tower 2 in the embodiments of the present utility model. The power pump 6 provides power to recycle the membrane filtration product water of the membrane filtration device 4 back to the cooling tower 2 for reuse.

[0032] As an optional implementation manner, referring to Figure 1 As shown, a regulating valve 7 is further provided between the water outlet of the calcium ion removal device 5 and the cooling tower 2. The regulating valve 7 is convenient for adjusting the water flow rate.

[0033] As an optional implementation manner, referring to Figure 1 As shown, a fan 9 is provided at the upper part of the cooling tower 2. The fan 9 helps the circulating water of the cooling tower 2 to dissipate heat.

[0034] As an optional implementation manner, the coarse filtration device 3 is filled with quartz sand and activated carbon. The quartz sand has a relatively high filtration efficiency, good filtration effect, and low operating cost. The activated carbon has developed micropores, fast adsorption speed, high purification degree, and long service life.

[0035] As an optional implementation manner, referring to Figure 1 As shown, a coarse filter screen 10 is further provided at the water inlet of the coarse filtration device 3. The coarse filter screen 10 can effectively remove large objects falling into the cooling tower, such as fallen leaves, etc.

[0036] As an alternative embodiment, a flushing assembly is provided inside the membrane filtration device 4, and the flushing assembly can flush the filter membrane to improve the service life and filtration effect of the filter membrane.

[0037] As an alternative embodiment, the filter membrane of the membrane filtration device is a ceramic sintered membrane or an organic synthetic membrane. The ceramic membrane has the advantages of good chemical stability, acid resistance, alkali resistance, organic solvent resistance, high mechanical strength, high separation efficiency, etc. The organic synthetic membrane has the advantages of wide material sources, low manufacturing cost per unit membrane area, high membrane module packing density, etc.

[0038] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. Unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] It should be noted that in the present invention, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0040] The above are only specific embodiments of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features of the present invention.

Claims

1. A water treatment system for a cooling tower, characterized in that, Comprising: A condensing device (1) for condensing the steam of the boiler (8) into water; A cooling tower (2) having two water inlets and two water outlets. A connection between one water inlet and one water outlet of the cooling tower (2) and the condensing device (1) forms a circulating water cooling loop; A coarse filtration device (3) whose water inlet is connected to the other water outlet of the cooling tower (2) for filtering large particles in the circulating water; A membrane filtration device (4) whose water inlet is connected to the water outlet of the coarse filtration device (3). The membrane filtration device (4) is used for filtering small particles in the circulating water. The membrane filtration device (4) has two water outlets. One water outlet of the membrane filtration device (4) is connected to the other water inlet of the cooling tower (2), and the other water outlet of the membrane filtration device (4) is connected to the water inlet of the coarse filtration device (3).

2. The water treatment system for a cooling tower according to claim 1, wherein, Further comprising: A calcium ion removal device (5) whose water inlet is connected to the water outlet of the membrane filtration product water of the membrane filtration device (4), and the water outlet of the calcium ion removal device (5) is connected to the other water inlet of the cooling tower (2).

3. The water treatment system for a cooling tower according to claim 2, wherein: A power pump (6) is provided between the water outlet of the calcium ion removal device (5) and the cooling tower (2).

4. The water treatment system for a cooling tower according to claim 2, wherein: A regulating valve (7) is further provided between the water outlet of the calcium ion removal device (5) and the cooling tower (2).

5. The water treatment system for a cooling tower according to claim 2, characterized in that: The calcium ion removal device (5) is filled with calcium ion chelating resin.

6. The water treatment system for a cooling tower according to claim 1, characterized in that: A fan (9) is provided at the upper part of the cooling tower (2).

7. A water treatment system for a cooling tower according to claim 1, characterized in that: The coarse filtration device (3) is filled with quartz sand and activated carbon.

8. A water treatment system for a cooling tower according to claim 1, characterized in that: A coarse filter screen (10) is further provided at the water inlet of the coarse filtration device (3).

9. A water treatment system for a cooling tower according to claim 1, characterized in that: A flushing assembly is provided inside the membrane filtration device (4).

10. A water treatment system for a cooling tower according to claim 1, characterized in that: The filter membrane of the membrane filtration device (4) is a ceramic sintered membrane or an organic synthetic membrane.

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