KR20160110820A - Water treatment apparatus using fluid shear stress - Google Patents

Abstract

The present invention relates to a water treatment device using fluid shear stress. The water treatment device includes: a main body having an accommodation space inside, wherein an inlet in which water to be treated flows is formed on one side and an outlet which the water to be treated is discharged from is formed on the other side; a stator fixed and installed on one side of the inside of the main body; and a rotor installed on one side adjacent to the stator to rotate. An organism in the water to be treated, flowing inside through the inlet, is extinct by difference of shear stress generated between the stator and the rotor. According to the present invention, the water treatment device can improve purification efficiency of the water to be treated, as a by-product harmful to a human body is not generated in a water treatment process by using a method of removing the organism included in the water to be treated using the difference of the shear stress generated by a mechanical rotation force of the rotor. The water treatment device also can reduce costs as not requiring an additional work for treating the generated by-product.

Description

[0001] The present invention relates to a water treatment apparatus using fluid shear stress,

The present invention relates to a water treatment apparatus using fluid shear stress, and more particularly, to a water treatment apparatus using fluid shear stress, and more particularly, to a water treatment apparatus using fluid shear stress, So that the water to be treated can be purified.

In general, for large ships, a separate ballast tank is installed at the lower part of the ship in order to keep the ship at a constant draft depending on the balance and existence of cargo, and when there is little or no cargo, sea water proportional to the cargo flows into the ballast tank, .

In such ballast tanks, a few thousand tons to several tens of thousands of tons of seawater flows in or out.

In this case, the amount of incoming seawater is set based on the size of ship, that is, the amount of discharged water. In case of large-sized ship, more than 10,000 tons of seawater is frequently introduced.

In this process, microbes in the water are included in the aquatic microorganisms. When the marine is moved to another country or another region after the sea of the country where the vessel is docked, and the sea is released, And the like.

The migration of microorganisms in water is a phenomenon that is rarely occurred in the natural world, and it is becoming a serious problem because ecosystem disturbance such as varieties of representative species and occurrence of red tide occur.

For the above reasons, conventionally, aquatic microorganisms contained in seawater are removed by various methods when the seawater is discharged, and a typical method thereof is a method using electrolysis.

The electrolysis method is widely used as a most effective method for removing microorganisms in water by removing sodium micro-organisms by generating sodium hypochlorite (NaOCl) through electrolysis of seawater. However, after the treatment with sodium hypochlorite (NaOCl) needs to be added to neutralize the NaOCl, so that the operation is troublesome and the cost increases accordingly.

Also, in the method using electrolysis, there is a fear that a scale is generated in an electrode contacting with seawater. When a scale is generated, a scale remover classified as a dangerous compound should be used. Therefore, it is not easy to handle, There is a problem that secondary contamination may occur when the electrode is cleaned.

Korean Patent No. 0928069 " Pretreatment filter for ballast water for marine vessel and method for treating the same "

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above problems, and it is an object of the present invention to provide a stator and a stator, which are arranged close to a stator and a stator, And an object of the present invention is to provide a water treatment apparatus using fluid shear stress that can kill an organism and purify water to be treated.

According to an aspect of the present invention, there is provided a water treatment apparatus for purifying a water to be treated by inducing the death of an organism contained in the water to be treated, the water treatment apparatus comprising: And a rotor rotatably installed on one side of the body adjacent to the stator, wherein the rotor has an inlet port through which the water to be treated flows, And the organism is killed by a difference in shear stress occurring between the stator and the rotor. The present invention also provides a water treatment apparatus using fluid shear stress.

Here, the stator has a first housing, one end of which is coupled to one side of the inner surface of the main body, and a first water treatment space communicating with the inlet is formed in the stator, one end of the first housing is coupled to the other side of the inner surface of the main body, And a second housing in which a second water treatment space communicating with the first water treatment space is formed.

The first housing is cut in one direction from the other end to form at least one discharge groove communicating the first water treatment space and the second water treatment space, and the second housing has, on one side of the outer surface, And at least one vent hole communicating with the accommodation space is formed.

The rotator may include a rotating body rotatably installed on one side of the stator and a rotatable body corresponding to the first water treatment space. The rotary body is disposed in the first water treatment space, And a second water treatment space formed on the other side of the rotating body corresponding to the second water treatment space and disposed in the second water treatment space so that one side and the other side are connected to the inner circumferential surface or the outer circumferential surface of the second housing, It is more preferable to include a second shearing protrusion positioned close to the second shearing protrusion.

The first and second shearing protrusions may be formed to be spaced apart from each other along the rotation direction, and may be rounded in a direction opposite to the rotation direction.

According to the present invention, the harmful by-products are not generated in the water treatment process due to the method of killing the organisms contained in the for-treatment water using the difference in shear stress generated by the mechanical rotational force of the rotor, The purification efficiency of the treated water is further improved and a separate operation for treating the generated by-products is not required, thereby reducing the cost.

1 is an exploded perspective view of a water treatment apparatus using fluid shear stress according to an embodiment of the present invention.
2 is a front view of a water treatment apparatus using fluid shear stress according to an embodiment of the present invention.
3 is a partial sectional view taken along the line A-A 'in Fig.
4 is a schematic view showing a flow of water to be treated in a water treatment apparatus using fluid shear stress according to an embodiment of the present invention.
FIGS. 5A and 5B schematically show an example in which the organisms contained in the for-treatment water are killed in the stator and the rotor of the water treatment apparatus using fluid shear stress according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the drawings. It is to be noted that like elements in the drawings are represented by the same reference numerals as possible. Further, detailed description of known functions and configurations that may unnecessarily obscure the gist of the invention will be omitted.

2 is a front view of a water treatment apparatus using fluid shear stress according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view of the water treatment apparatus using fluid shear stress according to an embodiment of the present invention. Sectional view taken along line A-A 'of Fig.

1 to 3, the water treatment apparatus 1 using fluid shear stress according to an embodiment of the present invention generates a difference in shear stress inside the for-treatment water to be introduced, And includes a main body 10, a stator 20, a rotor 30, and a turning force providing means 40. The main body 10, the stator 20, the rotor 30, and the turning force providing means 40 are for purifying the for-

Here, the organism includes microorganisms, viruses, bacteria, and the like.

The main body 10 includes a body portion 11 and a cover coupled to one end of the body portion 11. [

The body portion 11 is formed in a cylindrical shape with both ends open and has a receiving space T into which water to be treated flows in. The water to be treated flows into the receiving space T at one side of the outer surface, An outlet 11a is formed.

The flange 11b extends inwardly from one side of the outer surface of both ends of the body portion 11. The flange 11b is provided with a body portion 11, a cover portion 12, a body portion 11, Provides an area in which fastening means for fastening means 40 are fastened.

Between the body part 11 and the cover part 12 and between the body part 11 and the rotational force providing means 40, a sealing ring 11c for sealing the respective joint parts is interposed, Thereby preventing the untreated water from flowing out through the respective joint portions.

The cover 12 is formed in a circular plate shape having a diameter corresponding to the body 11 and has an inlet 12a coupled to one end of the body 11 and providing a path through which the water to be treated flows into the center .

The stator 20 is provided at one side of the main body 10 to provide a water treatment space for purifying the incoming water to be treated. The stator 20 includes a first housing 21 and a second housing 22.

The first housing 21 has a cylindrical shape and has one end coupled to one side of the cover 12 and a first water treatment space 21a communicating with the inlet 12a.

The first housing 21 is cut in one direction from the other end, and a plurality of discharge grooves 21b are formed along the outer peripheral surface of the first housing 21 to be spaced apart from each other by a predetermined distance.

The discharge groove 21b provides a path for the water to be introduced into the first water treatment space 21a of the first housing 21 into the second water treatment space 22a of the second housing 22. [

The second housing 22 has a cylindrical shape with a diameter larger than that of the first housing 21 and has one end coupled to the other side of the cover 12 and a concentric circle centering around the first housing 21 and the inlet 12a. And a second water treatment space 22a communicating with the first water treatment space 21a is formed therein.

The second housing 22 is spaced apart from the first housing 22 by a predetermined distance along the longitudinal direction, and a plurality of discharge holes 22b are formed along the outer peripheral surface of the second housing 22.

The discharge hole 22b provides a path for discharging the water to be treated W into the second water treatment space 22a of the second housing 22 into the accommodation space T of the main body 10. [

In the present embodiment, the stator 20 is constituted by two housings arranged on a concentric circle, and two water treatment spaces in which for-treatment water flows sequentially are formed, but the present invention is not limited thereto, The number of the housings may be increased to form three or more water treatment spaces.

The rotor 30 is rotatably installed on one side adjacent to the stator 20 so that the for-treatment water flowing between the stator 20 and the rotor 30 is rotated at a high speed to generate a difference in shear stress. And includes a body 31, a first shearing protrusion 32, and a second shearing protrusion 33.

The rotary body 31 is formed in a disk shape, and the other end is fixedly coupled to a rotation shaft of a rotational force providing means 40 to be described later.

The first shearing protrusions 32 protrude from one end of the rotating body 31 corresponding to the first water treatment space 21a and are formed to be spaced apart from each other by a predetermined distance along the circumferential direction.

The first shearing protrusions 32 are disposed in the first water treatment space 21a so that the outer circumferential surfaces of the first shearing protrusions 32 are located close to the inner circumferential surface of the first housing 21, A minute clearance is formed between the inner circumferential surfaces.

The second shearing protrusions 33 protrude from one end of the rotating body 31 corresponding to the second water treatment space 22a, and a plurality of the second shearing protrusions 33 are formed so as to be spaced apart from one another along the circumferential direction.

Preferably, the first and second shearing projections are formed to be rounded in a direction opposite to the rotation of the rotary body.

Each of the second shearing protrusions 33 is disposed in the second water treatment space 22a and each of the inner circumferential surfaces thereof is disposed adjacent to the outer circumferential surface of the first housing 21, So as to form a minute gap between each inner circumferential surface, the outer circumferential surface of the first housing 21, the inner circumferential surface of each of the first housing 21 and the inner circumferential surface of the second housing 22, respectively.

In the present embodiment, the rotation protrusion is illustrated as a double protrusion structure including the first shearing protrusion 32 and the second shearing protrusion 33, but the present invention is not limited to this, And may be formed in three or more.

In this embodiment, the first and second shearing protrusions 32 and 33 are formed to be spaced from each other by a predetermined distance in the circumferential direction. However, the present invention is not limited thereto, 1 shearing protrusions 32 and the second shearing protrusions 33 may be formed as an integral structure continuously formed along the circumferential direction.

The rotor 30 may be configured such that the first shearing protrusions 32 and the second shearing protrusions 33 are formed in the first water treatment space 21a of the first housing 21 and the second water treatment process of the second housing 22, The water to be treated flowing into the first water treatment space 21a and the second water treatment space 22a is rotated together with the water in the holding space T of the main body 10 by the centrifugal force, .

The distance between the outer circumferential surface of the first shearing protrusion 32 and the inner circumferential surface of the first housing 21, between the inner circumferential surface of the second shearing protrusion 33 and the outer circumferential surface of the first housing 21, Treated water flowing into a fine gap formed between the outer circumferential surface of the second housing 22 and the inner circumferential surface of the second housing 22 has a difference in shear stress due to high-speed rotation.

Accordingly, the organisms contained in the water to be treated are subjected to shearing stresses of different sizes, resulting in rupture or damage of the cell membrane.

One end of the rotation force providing means 40 is coupled to the other end of the body portion 11. The rotation shaft is disposed inside the accommodation space and the rotation shaft 41 is coupled to the other end of the rotation body 31, A well-known motor can be used.

FIG. 4 is a schematic view showing a flow of water to be treated in a stator and a rotor of a water treatment apparatus using fluid shear stress according to an embodiment of the present invention. FIG.

4, the for-treatment water flowing into the first water treatment space 21a through the inlet 12a of the main body 10 is rotated together with the first shearing protrusion 32 as it is rotated, And flows into the second water treatment space 22a through the discharge groove 21b.

The water to be treated flowing into the second water treatment space 22a is caused to rotate together with the second shearing protrusions 33 as they are rotated and passes through the discharge hole 22b by the centrifugal force, And then discharged to the outside through the outlet 11a.

FIGS. 5A and 5B schematically show an example in which the organisms contained in the for-treatment water are killed in the stator and the rotor of the water treatment apparatus using fluid shear stress according to an embodiment of the present invention.

5A, the water to be treated flowing into the first water treatment space 21a of the first housing 21 and the second water treatment space 22a of the second housing 22 is discharged through the first and second shear projections 32, When the second shearing protrusion 33 is rotated in the counterclockwise direction as shown by the arrow, it is discharged to the receiving space of the main body through the first water treatment space 21a and the second water treatment space 22a by the centrifugal force.

At this time, between the outer peripheral surface of the first shearing protrusion 32 and the inner peripheral surface of the first housing 21 (enlarged view A), between the inner peripheral surface of the second shearing protrusion 33 and the outer peripheral surface of the first housing 21 B, the water to be treated flowing into the minute gap formed between the outer peripheral surface of the second front end projection 33 and the inner peripheral surface of the second housing 22 (enlarged view C) has a difference in shear stress inside.

As a result, the organisms (S) contained in the water to be treated are ruptured or damaged due to the action of different shear stresses, resulting in the extinction.

5B, the organism S contained in the for-treatment water flowing into the first water treatment space 21a and flowing into the second water treatment space 22a through the discharge groove 21b is shown in an enlarged view D As shown in FIG. 4, the gas is introduced into the discharge hole 21b and struck the first shearing protrusion 32 to rupture or damage the cell membrane.

Similarly, the organism S contained in the for-treatment water flowing into the second water treatment space 22a and flowing into the accommodation space T through the discharge hole 22b flows into the discharge hole 22b, 33), resulting in cell membranes rupturing or damaging.

As described above, the water treatment apparatus 1 using the fluid shear stress according to an embodiment of the present invention can reduce the shear stress caused by the mechanical rotational force of the rotor 30, The harmful by-products are not generated in the water treatment process due to the killing method, so that the purification efficiency of the water to be treated is further improved and a separate operation for treating the generated by-products is not required, .

Although the present invention has been described in connection with the preferred embodiments, it is possible to make various modifications and variations without departing from the spirit and scope of the invention. It is, therefore, to be understood that the appended claims will include all such modifications and changes as fall within the true spirit of the invention.

1: Water treatment system using fluid shear stress
10: main body 11:
11a: outlet 11b: flange
11c: sealing ring 12: cover portion
12a: inlet 20: stator
21: first housing 21a: first water treatment space
21b: discharge groove 22: second housing
22a: second water treatment space 22b: discharge hole
30: Rotor 31: Rotating body
32: first shearing protrusion 33: second shearing protrusion
40: rotational force providing means 41: rotational axis
S: organism T: accommodation space

Claims (5)

A water treatment apparatus for purifying a water to be treated by inducing the death of an organism contained in the water to be treated,
A main body having an accommodation space formed therein and having an inlet through which the for-treatment water is introduced into one side and an outlet through which the treated water is discharged from the other side;
A stator fixedly installed on one side of the main body;
And a rotor rotatably mounted on a side adjacent to the stator,
Wherein the organism is killed by a difference in shear stress occurring between the stator and the rotor, in the for-treatment water flowing through the inlet. The method according to claim 1,
The stator
A first housing having one end coupled to one side of the inner surface of the main body and having a first water treatment space formed therein to communicate with the inlet;
And a second housing coupled to the other side of the inner surface of the main body and having a second water treatment space formed outside the first housing to communicate with the first water treatment space. 3. The method of claim 2,
Wherein the first housing is cut in one direction from the other end to form at least one discharge groove communicating the first water treatment space and the second water treatment space,
Wherein at least one outlet hole communicating with the second water treatment space and the accommodation space is formed on one side of the outer surface of the second housing. 3. The method of claim 2,
The rotor
A rotatable body rotatably installed on one side adjacent to the stator;
A first shear protrusion formed on one side of the rotary body corresponding to the first water treatment space and disposed in the first water treatment space and having one side positioned adjacent to an inner circumferential surface of the first housing;
And a second shearing protrusion protruding from the other side of the rotating body corresponding to the second water treatment space and disposed in the second water treatment space and having one side and the other side located close to an inner circumferential surface or an outer circumferential surface of the second housing Characterized by a fluid shear stress. 5. The method of claim 4,
Wherein the plurality of first shearing projections and the plurality of second shearing projections are spaced apart from each other along the rotation direction and are rounded in a direction opposite to the rotation direction.

Images