KR20170036316A - UV reactor for ballast water treatment system - Google Patents

Abstract

The present invention relates to a quartz tube ultraviolet (UV) reactor for a ballast water treatment apparatus. The quartz tube UV reactor can prevent damage to a quartz tube UV lamp by changing the installation location of a spray nozzle spraying a washing fluid and improves the arrangement of the quartz tube UV lamp in a novel manner to ensure the homogeneity of the flow residence time and enhance the wetting property of the washing fluid at the same time. The quartz tube UV reactor includes: a body which has a hollow inside, has both ends in the longitudinal direction open, and is provided as a path for flowing the seawater in the longitudinal direction; seawater inlet and outlet pipes individually formed on both ends of the body in the longitudinal directions; and multiple quartz tube UV lamps which cross both surfaces of the body in a direction perpendicular to the longitudinal direction of the body to be installed while penetrating through the body. The quartz tube UV lamps are arranged in first and third columns in an upward direction from the lower part of the body and are arranged to be near the walls of the body while being spaced apart in both directions from the center line of the body symmetrically. The quartz tube UV lamps arranged in a second column are arranged on the center line. The quartz tube UV lamps arranged in a fourth column are arranged near the center line while being symmetrical with respect to the center line.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a UV reactor for a ballast water treatment apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultraviolet reactor for a ballast water treatment apparatus, and more particularly, to an ultraviolet reactor for a ballast water treatment apparatus, in which a mounting position of a spray nozzle for spraying a cleaning liquid is changed to prevent breakage of the quartz tube ultraviolet lamp, So that the homogenization of the flow residence time and the wetting property of the washing solution can both be improved.

In general, the ballast tanks installed on the ship minimize the center of gravity of the ship by loading and unloading of the cargo, thereby helping to enable safe navigation.

In other words, if the ship is loaded full of cargo, the ship's center of gravity is located below the sea level even if the ballast tank is not filled with ballast water. Therefore, even if the external force acts, the ship can safely navigate. However, The ballast tanks are filled with ballast water so that a certain portion of the vessel can be positioned below the sea level.

As described above, the ballast water used for safe operation of a ship has a problem in that it is used as a medium for propagating organisms or pathogens in a specific area to other seas. In other words, the ballast water filled in the ballast tanks may include various marine life and pathogens. Since the inflow and outflow of the ballast water occur in different areas, As pathogens leak to other waters, they cause side effects that disturb the environment and the ecosystem. Therefore, it is required to introduce an ultraviolet reactor for a ballast water treatment apparatus in order to sterilize ultraviolet rays of marine organisms or pathogens included in ballast water at the time of entering and exiting the ballast water.

Referring to FIG. 1, a general structure of an ultraviolet reactor 10 for a ballast water treatment apparatus includes a body 12 provided as a passage through which seawater flows, a body 12 provided in a marine or ballast tank (not shown) A seawater inflow pipe 14 for inflowing seawater, a seawater outlet pipe 16 for discharging seawater passing through the body 12, and a sterilizing treatment unit for irradiating ultraviolet rays to the seawater passing through the body 12 A quartz tube ultraviolet lamp 18 and an injection nozzle 22 installed at a center of the upper portion of the body 12 and spraying the cleaning liquid 20 from the upper side to the lower side, And a washing liquid spray pipe 24 connected to the washing nozzle 20 and feeding and supplying the washing liquid 20 to the spray nozzle 22.

As shown in the drawing, the seawater flows in from one side end toward the opposite side end. Specifically, in parallel with the quartz tube ultraviolet lamp 18, the sea water inflow pipe 14 And a seawater outlet pipe 16 are disposed. The seawater inlet pipe 14 and the seawater outlet pipe 16 arranged in this manner are formed to communicate with each other by opening to the side where they meet with the body 12 for the flow of seawater.

The quartz tube ultraviolet lamp 18 has a structure in which the quartz tube ultraviolet lamp 18 penetrates both side portions of the body 12 while being crossed in a direction orthogonal to the longitudinal direction of the body 12 or in a direction orthogonal to the flow direction of seawater in the body 12 It is fixedly installed.

Therefore, when the ballast water is introduced, the ballast water enters the ultraviolet reactor 10 through the seawater inflow pipe 14 at the lower part of the body 12, passes through the passage in the body 12 from below to the upper side, The ultraviolet lamp 18 is vertically crossed, and sterilized by the ultraviolet ray irradiated in the process, and then introduced into the ballast tank through the seawater outlet pipe 16.

On the other hand, when the ballast water flows out, the ballast water flowing out of the ballast tank flows into the ultraviolet reactor 10 described above, is subjected to a sterilization treatment process, and then discharged to the ocean.

Meanwhile, the quartz tube UV lamp 18 in the ultraviolet reactor 10 is exposed to seawater as described above. Therefore, contaminants and scale materials (calcium carbonate, magnesium carbonate, etc.) are coated on the surface of the quartz tube, The ultraviolet light transmittance is lowered. In order to prevent this, a pickling nozzle is used to perform pickling to remove contaminants and scale materials sticking to the quartz tube.

In detail, at the time of cleaning the quartz tube ultraviolet lamp 18, all of the seawater filled in the body 12 of the ultraviolet reactor 10 is discharged and then supplied along the washing liquid spray pipe 24 The cleaning liquid 20 is sprayed through the spray nozzle 22 to perform cleaning. At this time, the upper surface portion of the quartz tube ultraviolet lamp 18 is cleaned, and the cleaning liquid is flowed down by gravity, so that the remaining surface portion of the quartz tube ultraviolet lamp 18 is cleaned except for the upper portion thereof .

However, due to the irregular washing operation and the influence of the seawater, corrosion occurs in a portion where the injection nozzle 22 is connected and fixed, and in the pipe, and the injection nozzle 22 is dropped or peeled off at the connection portion The solid matter is dropped.

In such a case, the injection nozzle 22 or the peeled solids collide with the quartz tube ultraviolet lamp 18 while falling down from the upper side.

The quartz is susceptible to impacts due to the material, so that there is a problem that the quartz tube is cracked due to the collision of the falling spray nozzle 22 and the peeled solid matter.

When the injection nozzle 22 is positioned at the upper portion as described above, the washing liquid spray pipe 24 connected to the spray nozzle 22 is also located at the upper part. At this time, the corrosion product accumulated in the washing liquid spray pipe 24 It is possible to prevent the quartz tube ultraviolet lamp 18 from being broken due to the fact that it is moved to the injection nozzle 22 by the transfer flow force of the cleaning liquid and falls downward through the injection nozzle 22 or is strongly jetted downwardly together with the cleaning liquid injection. .

In addition, the quartz tube ultraviolet lamp 18 generally has a quadrangular tube ultraviolet lamp 18 arranged in a square manner as shown in Fig. 1, or a quartz tube ultraviolet lamp 18 takes a triangular arrangement structure as shown in Fig. 2 The distribution of the irradiation dose is dispersed because the consideration of the combination of the illuminance depending on the distance in the quartz tube ultraviolet lamp and the residence time of the passing fluid is not separately performed. Therefore, in order to satisfy the minimum dose, there is a problem that the quantity of the quartz tube ultraviolet lamp 18 must be greatly increased.

Disclosure of the Invention The present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a quartz tube ultraviolet lamp capable of preventing the quartz tube ultraviolet lamp from being damaged by changing the installation position of the injection nozzle for injecting the cleaning liquid, An object of the present invention is to provide an ultraviolet reactor for a ballast water treatment apparatus capable of improving the homogeneity of the flow residence time and the wetting property of the washing liquid.

In order to achieve the above object, according to the present invention, there is provided a water treatment system comprising: a body which is hollow and has openings at both ends in the longitudinal direction and which is provided as a passage through which seawater flows in a longitudinal direction; And a plurality of quartz tube ultraviolet lamps installed in a state of passing through the body while crossing both side portions of the body in a direction orthogonal to the longitudinal direction of the body, the ultraviolet reactor for a ballast water treatment apparatus And the quartz tube ultraviolet lamps arranged in the first and third rows in the upper direction from the lower part of the body are symmetrical with respect to the center line of the body and are disposed close to the wall surface part of the body by being spread from both sides of the center line, A quartz tube ultraviolet lamp disposed in the column is disposed on the center line, The objective ultraviolet lamp is symmetrical with respect to the center line and can achieve the object through an ultraviolet reactor for a ballast water treatment apparatus disposed close to the center line.

Further, the quartz tube ultraviolet lamp disposed in the first row and the quartz tube ultraviolet lamp disposed in the third column can achieve the object through the ultraviolet reactor for the ballast water treatment apparatus located on the same vertical line.

In addition, the quartz tube ultraviolet lamps arranged in the four columns do not escape between the quartz tube ultraviolet lamps arranged symmetrically to the first and third columns, and are positioned between the quartz tube ultraviolet lamps in the two rows and the quartz tube ultraviolet lamps in the three columns, The object can be achieved through the ultraviolet reactor for the ballast water treatment apparatus arranged in a state of being in a state of being in a state of

In addition, the ultraviolet reactor for a ballast water treatment apparatus in which the injection nozzle for spraying the cleaning liquid is disposed on the center line is disposed at the lower end of the body.

In the lower end of the body, a pair of spray nozzles for spraying the cleaning liquid by a quartz tube ultraviolet lamp disposed in four rows are arranged in four rows, and a ultraviolet reactor for treating ballast water is disposed so as to be positioned directly under the quartz tube ultraviolet lamp The goal is achieved through.

In addition, the object can be achieved through the ultraviolet reactor for treating ballast water in which the sludge discharging means composed of any one of the hole and the spray nozzle is formed in the lower end of the washing liquid spray pipe provided with the spray nozzle.

When the ultraviolet reactor for the ballast water treatment apparatus according to the present invention is used, the installation position of the spray nozzle for spraying the cleaning liquid is changed to prevent breakage of the quartz tube ultraviolet lamp. Especially, And it is expected that the homogenization of the flow residence time and the wetting property of the washing solution can both be improved.

1 is a perspective view showing a UV reactor for a general ballast water treatment apparatus in which quartz tube ultraviolet lamps are arranged in a rectangular array.
2 is a perspective view showing a UV reactor for a general ballast water treatment apparatus in which quartz tube ultraviolet lamps are arranged in a triangular array.
3A and 3B show an ultraviolet reactor for a ballast water treatment apparatus according to the present invention, wherein FIG. 3A is a cross-sectional view and FIG. 3B is a side view.
FIG. 4 is a side view showing the arrangement of the quartz tube UV lamp of FIG. 1;
5 is a side view showing the arrangement of the quartz tube UV lamp of FIG. 2;
FIG. 6 is a graph showing distribution of irradiation dose for FIGS. 3B, 4, and 5. FIG.
Fig. 7 is a schematic view showing another example of the injection nozzle as a corresponding drawing of Fig. 3B. Fig.

3A and 3B illustrate an ultraviolet reactor according to an embodiment of the present invention. As shown in the figure, the ultraviolet reactor 10 according to the present invention includes a body (not shown) A seawater inlet pipe 14 for introducing seawater from the marine or ballast tank (not shown) into the body 12, a seawater outlet pipe 16 for discharging seawater passing through the body 12, An ultraviolet quartz tube group 30 for irradiating ultraviolet rays to the seawater passing through the body 12 and disinfecting the ultraviolet quartz tube group 30 and a cleaning liquid 20 installed in a lower center of the body 12, And a washing liquid spray pipe 34 connected to the washing nozzle 20 to transfer the washing liquid 20 to the spray nozzle 32.

The seawater inlet pipe 14 and the seawater outlet pipe 16 are disposed at both ends of the body 12 in the longitudinal direction of the body 12, as shown in the drawing. And the seawater inlet pipe 14 and the seawater outlet pipe 16 arranged in this manner are formed to communicate with each other by opening to the side where they meet with the body 12 for the flow of seawater.

In the present invention, as described above, the structure in which the injection nozzle 32 for injecting the cleaning liquid 20 is installed at the bottom is employed. For example, as described in the background art, 35b, 35c, and 35d due to the falling of the solids separated from the injection nozzle 32 or the connecting portion due to the corrosion of the ultraviolet lamps 35a, 35b, 35c, 35d, It is possible to completely solve the problem of cracking.

When the injection nozzle 32 is positioned at the bottom as described above, the washing solution spray pipe 34 connected to the spray nozzle 32 is also located at the bottom. At this time, the corrosion product accumulated in the washing solution spray pipe 34 Even if it is moved to the injection nozzle 32 by the transfer flow force of the cleaning liquid, it remains in the injection nozzle 32 as it is. Therefore, even when the washing liquid is sprayed, most of the sinking state is maintained on the inner bottom of the spraying nozzle 32, so that the erosion of the corrosion products relatively can be minimized compared with the structure in which the spraying nozzle 32 is installed on the upper side.

For example, even if the corrosion product is ejected, a corrosion product with relatively light weight is ejected, so that the quartz tube ultraviolet lamp is not hit hardly and cracks and breakage do not occur.

The ultraviolet quartz tube group 30 installed inside the body 12 is assumed to be heated from the lower side to the upper side.

The arrangement structure of the ultraviolet quartz tube group 30 includes a pair of quartz tube ultraviolet lamps 35a in one row, one quartz tube ultraviolet lamp 35b in two columns, a pair of quartz tube ultraviolet lamps 35c in three columns, A pair of quartz tube lamps 35d are arranged in the column.

Specifically, the quartz tube ultraviolet lamps 35a and 35c disposed on the first and third columns are symmetrical with respect to the center line S1 on which the injection nozzle 32 is located, And are disposed close to the wall surface portion 36 of the body 12, respectively. In addition, the quartz tube ultraviolet lamp 35a disposed in the first column and the quartz tube ultraviolet lamp 35c disposed in the third column are located on the same vertical line S2.

The quartz tube ultraviolet lamps 35b disposed in the two rows are arranged on the center line S1.

The quartz tube ultraviolet lamps 35d arranged in the four columns are symmetrically arranged on both sides with respect to the center line S1 and are arranged in a state of being close to the center line S1 and arranged in a symmetrical structure in the first and third columns And is disposed between the quartz tube ultraviolet lamps 35b and the three rows of quartz tube ultraviolet lamps 35c, without being separated from the quartz tube ultraviolet lamps 35a and 35c.

The overlapping of the quartz tube ultraviolet lamps 35a, 35b, 35c and 35d arranged in the first to fourth columns through the arrangement structure of one to four columns of the quartz tube ultraviolet lamps 35a, 35b, 35c and 35d is minimized And it is also possible to minimize the bypass portion of the cleaning liquid 20 according to the jetting angle of the jetting nozzle 32.

FIG. 4 is a side view showing the arrangement of FIG. 1, and FIG. 5 is a side view showing the arrangement of FIG. 2. In FIG. 6, the distribution of the irradiation dose for FIGS. 3B, 4, A graph is shown.

4, the quartz tube ultraviolet lamps 42a, 42b, 42c and 42d arranged in the first to fourth columns are symmetrical on both sides with respect to the center line S1, and the quartz tube ultraviolet lamps 42a, The quartz tube ultraviolet lamps 52a, 52c and 52e of one row, three columns and five columns are arranged on the center line S1 and two columns of quartz tube ultraviolet lamps 52a, 52c and 52e are arranged on the center line S1 in the ultraviolet quartz tube group 50 of Fig. The quartz tube ultraviolet lamps 52b and 52d in the column and the fourth column are arranged symmetrically on both sides with respect to the center line S1 and aligned in a line on the vertical line S2.

Specifically, the array structure of the ultraviolet quartz tube group 40 shown in FIG. 4 has a structure in which ultraviolet rays irradiated by organisms are irradiated very rapidly due to the rapid passing between the symmetrical quartz tube ultraviolet lamps, that is, along the center line S1 In addition, the graph shows that the amount of irradiation is wide, because there are many portions that are in contact with quartz tube ultraviolet lamp for a relatively long time.

On the other hand, although the arrangement structure of the ultraviolet quartz tube group 30 of FIG. 3B and the arrangement structure of the ultraviolet quartz tube group 50 of FIG. 5 show better results than the arrangement structure of the ultraviolet quartz tube group 40 of FIG. When the spray nozzle is applied to the lower part, it is difficult to apply the lower spray nozzle because the wetting property of the spray solution is poor due to the interference of the quartz tube. In particular, it can be seen from the graph that the arrangement of the ultraviolet quartz tube group 30 of FIG. 3b according to the present invention shows a more homogenized dose distribution than that of the ultraviolet quartz tube group 50 of FIG.

Therefore, the ultraviolet reactor for the ballast water treatment apparatus according to the present invention can prevent breakage of the ultraviolet lamp while maintaining the cleaning power and the cleaning effect, and in particular, the arrangement structure of the ultraviolet quartz tube group 30 arranged in the first to fourth columns, So that they are minimized from being clogged with each other so that the flow residence time can be homogenized and the washing liquid can be improved in spraying wettability.

Fig. 7 is a schematic view showing another example as a corresponding figure of Fig. 3b.

The quartz tube ultraviolet lamps 35a, 35b and 35c in the first to third columns in the ultraviolet quartz tube group 30 arrangement structure described above can be expected to directly wash the washing liquid 20 sprayed from the spray nozzle 32 However, the quartz tube ultraviolet lamp 35d at the uppermost stage, that is, the quartz tube ultraviolet lamp 35d of only four rows is applied only a part of the spray angle of the spray nozzle 32, so that the injection quantity and wettability may be insufficient as compared with the case where the spray nozzle is provided at the upper end as in the background art.

Therefore, in order to solve the above-mentioned insufficiency, a pair of spray nozzles 54 are disposed so as to be sprayed to the quartz tube ultraviolet lamps 35d arranged in four rows so that the cleaning liquid 20 to be sprayed is arranged, The cleaning liquid flow rate injected to the lamp 35d is equal to the flow rate of the washing liquid sprayed on the quartz tube ultraviolet lamps 35a, 35b and 35c arranged in the first to third rows.

The pair of spray nozzles 54 for spraying the cleaning liquid 20 by the quartz tube ultraviolet lamps 35d disposed in the four columns are arranged in a state of being positioned directly under the quartz tube ultraviolet lamps 35d arranged in four rows . Further, it is preferable that the spray nozzle 54 is a sectorial spray nozzle.

3B, a sludge discharging means 56 such as a hole or a spray nozzle is separately installed at the lower end of the washing liquid spray pipe 34 provided with the spray nozzles 34 and 54, Or the corrosive sludge can be easily discharged without being accumulated in the washing liquid spray pipe 34, thereby preventing the spray nozzles 34 and 54 from being blocked by the solid matter or the corrosive sludge.

In addition, the injection nozzle 54 can be applied by superimposing a plurality of injection nozzles according to the length and the spray angle of the quartz tube ultraviolet lamp.

The foregoing is a description of certain preferred embodiments of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, .

10: ultraviolet reactor
12: Body
14: Seawater inflow pipe
16: Sea water outlet pipe
18: Quartz tube ultraviolet lamp
20: Washing solution
22, 32, 54: injection nozzle
24, 34: Washing solution spraying
30, 40, 50: ultraviolet quartz tube
35a, 35b, 35c, 35d, 42a, 42b, 42c, 42d, 52a, 52b, 52c, 52d, 52e: quartz tube ultraviolet lamp
36: wall portion
56: sludge discharge means

Claims (7)

A body 12 provided with openings at both ends in the longitudinal direction and serving as a passage through which the seawater flows in the longitudinal direction, a seawater inlet pipe 14 and a seawater outlet pipe 14 formed at both longitudinal ends of the body 12, A plurality of quartz tube ultraviolet lamps 35a and 35b disposed in a state of passing through the body 12 while crossing both side surfaces of the body 12 in a direction perpendicular to the longitudinal direction of the body 12, , 35c, and 35d as the ultraviolet reactor for the ballast water treatment apparatus,
The quartz tube ultraviolet lamps 35a and 35c disposed in the first and third rows from the lower portion of the body 12 are symmetrical with respect to the center line S1 of the body 12, And the quartz tube ultraviolet lamps 35b disposed in the two rows are disposed on the center line S1 and the quartz tube ultraviolet lamps 35b disposed on the quartz tube Wherein the ultraviolet lamps (35d) are arranged symmetrically with respect to the center line (S1) and close to the center line (S1).
The method according to claim 1,
Characterized in that the quartz tube ultraviolet lamp (35a) arranged in the first row and the quartz tube ultraviolet lamp (35c) arranged in the third column are located on the same vertical line (S2).
The method according to claim 1,
The quartz tube ultraviolet lamps 35d disposed in the four columns are arranged in the two rows of the quartz tube ultraviolet lamps 35b without departing from the quartz tube ultraviolet lamps 35a and 35c arranged symmetrically to the first and third columns. And a quartz tube ultraviolet lamp (35c) arranged in three rows. The ultraviolet reactor for a ballast water treatment apparatus according to claim 1,
The method according to any one of claims 1 to 3,
Wherein a spray nozzle (32) for spraying the cleaning liquid upward in a state of being coupled to one end of the cleaning liquid spray pipe (34) is disposed on the center line (S1) at the lower end of the body (12) UV reactor for processing equipment
The method according to any one of claims 1 to 3,
A pair of spray nozzles 34a and 34b for spraying the cleaning liquid in the upward direction in a state of being coupled to one end of the cleaning liquid spray pipe 34 so that the cleaning liquid is sprayed by the quartz tube ultraviolet lamp 35d disposed in four rows, (54) are arranged so as to be positioned directly under the quartz tube ultraviolet lamp (35d) arranged in four rows.
The method of claim 4,
Wherein a sludge discharging means (56), which is one of a hole and a spray nozzle, is formed at the lower end of the washing liquid spray pipe (34) provided with the spray nozzle (32).
The method of claim 5,
And a sludge discharging means (56) formed of one of a hole and a spray nozzle is formed at the lower end of the washing liquid spray pipe (34) provided with the spray nozzle (54).

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