KR101943483B1 - Apparatus for treating contamination sediment - Google Patents

Abstract

The present invention relates to an apparatus for treating dredged soil. The apparatus for treating dredged soil separates a big adulteration and a minute adulteration, separates sand and an organic adulteration from the minute adulteration in the water, dehydrates to lead a whirlwind as air after washing sand separated from the organic adulteration in the water, and then reuses clean sand from which the organic adulteration is removed. Moreover, since a separation process of the big adulteration, a separation process of the organic adulteration and a washing process are performed in an enclosed space while almost not being in contact with external air, odors are reduced, thereby efficiently preventing complaints.

Description

[0001] APPARATUS FOR TREATING CONTAMINATION SEDIMENT [0002]

The present invention relates to a dredged soil treatment apparatus, and more particularly, to a dredged soil treatment apparatus that effectively separates contaminants contained in dredged soil to maximize recycling and minimizes the generation of odors.

Generally, the dredged soil generated from river dredging separates and removes organic impurities such as organic substances and organic suspended substances, thereby reusing coarse contaminants such as gravel and sand. The dredged soil is transported along the conveying conveyor, and the coarse waste such as wood, plastic and the like are separated from the coarse material, and then the water is sprayed to remove the organic impurities, thereby reusing the sand.

However, in the conventional dredged soil treatment method, since the separation of coarse dirt is performed manually, there is a problem that a complaint is generated due to a malodor due to a problem of input of manpower, limitation of removal of organic contaminants, and open processing.

Korean Registered Patent No. 10-0892258 entitled " Mixed Tank Type Needle Branching Device ", Korean Patent Registration No. 10-1127507 " Dredged Soil Treatment System ", Korean Registered Patent No. 10-0958067 " &Quot; and the like are solved to solve the above problem.

Korean Patent Registration No. 10-0892258 discloses a method for treating dredged soil and a needle thread by using a needle separation device at the same time, thereby reducing costs, eliminating the need for site selection, and reducing operating personnel. And the moisture content in the needle bed is greatly reduced, thereby greatly reducing environmental pollution problems such as the generation of bad odors or the emission of polluted water due to the needling.

Korean Patent Registration No. 10-1127507 discloses an organic material treatment unit comprising a high-pressure water spray tank and a vibration screen, an organic material treatment unit including a plurality of cyclones, a micro-air floating apparatus, and a rapid washing tank. The water treatment tank includes a plurality of water tanks And a dredged soil treatment system including a plurality of other devices, the sorting unit of the dredged soil treatment system not only separates and removes sludge contained in the dredged soil, that is, coarse waste and coarse aggregate more easily and easily, Has an effect of smoothly removing organic substances and organic suspended substances contained in dredged soil.

Korean Patent Registration No. 10-0958067 discloses a method of treating contaminated dredged soil which is not recycled due to contamination of conventional heavy metals and disposing the whole amount of landfill so that 30 to 60% of the dredged sand is sorted and recycled, Distributed microdredged soils can be cleaned by minimizing the amount of purification treatment and then recycled as embankment. By maximizing the recycling of aggregate and minimizing the amount of final landfill, it is possible to overcome the difficulties of securing landfill and reduce contamination of soil by dredging landfill There is an advantage.

Korean Patent Registration No. 10-0892258 entitled " Mixed Tank Type Needle Branching Device " Korean Patent Registration No. 10-1127507 entitled "Dredged Soil Treatment System" Korean Patent Registration No. 10-0958067 " dredged soil treatment disposal and its treatment method &

An object of the present invention is to provide a dredged soil treatment plant capable of effectively separating contaminants contained in dredged soil to maximize recycling and minimize the generation of odors.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not intended to limit the invention to the particular embodiments that are described. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, There will be.

In order to accomplish the above object, the present invention provides a receiving and storing hopper (10) for loading and storing dredged soil; A sprinkling nozzle 13 installed at a discharge port 11 of the loading and unloading hopper 10; A dropping buffer 15 installed at a discharge port 11 of the loading and unloading hopper 10; A first conveying screw 20 installed below the discharge port 11 of the loading and storing hopper 10 for conveying the dredged soil discharged from the discharge port 11; Separating the coarse dirt and the fine dirt from the dredged soil conveyed through the conveying screw 20 by being connected to the first conveying screw 20 and separating the coarse dirt with the coarse dirt outlet 31 and the fine dirt outlet 32 Means (30); A second conveyance screw 40 installed below the micro-contaminant discharge port 32 for conveying micro-contaminants discharged from the micro-contaminant discharge port 32; A cylinder (50) having an inner hollow structure and surrounding the middle of the second feed screw (40) and having wash water (51); The second conveying screw 40 is installed inside the cylindrical body 50 and surrounds the second conveying screw 40. The second conveying screw 40 rotates while being partially immersed in the washing water 51 and removes organic contaminants from the fine contaminant conveyed by the second conveying screw 40 An organic contaminant separation drum (60) having a plurality of holes (61) for separating the sand from the sand; A lower cylinder (70) extending downwardly of the cylinder (50) and providing a settling place of organic contaminants from the washing water (51); A third conveying screw 80 installed in the lower cylinder 70 for conveying the organic contaminants settled in the lower cylinder 70 and discharging the organic contaminants to the outside; A first spraying pipe 91 and a second spraying pipe 91 disposed inside the cylindrical body 50 and disposed on the organic contaminant separation drum 60 and spaced apart from the first spraying pipe 91 and the first spraying pipe 91 A first clogging preventing means 90 for preventing clogging of the holes 61 by sprinkling water on the organic contaminant separation drum 60 exposed from the washing water 51; And a first wash water supply pipe (110) for supplying the wash water (51) to the cylinder (50).

Specifically, a sensor 120 sensing the level of the washing water 51 may be installed inside the cylinder 50.

The tubular body 50 may be provided with an ultrasonic vibrator 130 for applying ultrasonic vibration to the washing water 51.

A sand discharge pipe 140 installed at a lower portion of the cylindrical body 50 for discharging the separated sand through the organic contaminant separation drum 60 to the outside of the cylindrical body 50, A fourth conveying skew 150 installed to convey the sand discharged from the sand discharge pipe 140 and a second conveying skew 150 surrounding the fourth conveying screw 150 to form a hollow structure, The washing machine according to any one of the preceding claims, wherein the washing tubular body (160) is installed inside the washing tubular body (160) and surrounds the fourth feeding screw (150) A washing drum 170 having a plurality of holes 171 for washing the sand to remove organic contaminants and a washing drum 170 extending from the washing tub 160 for removing organic contaminants from the washing water 161, A sedimentation cylinder 180 provided in the sedimentation cylinder 180, A fifth conveying screw 190 for conveying the organic contaminants settled in the settling cylinder 180 and discharging the organic contaminants to the outside and a second conveying screw 190 disposed inside the washing cylinder 160 and positioned above the washing drum 170, And a second nozzle 213 arranged at a distance from the second spray pipe 211 so as to spray water onto the cleaning drum 170 exposed from the wash water 161, A second clogging preventing means 210 for preventing clogging of the holes 171 and a second washing water supply pipe 220 for supplying the washing water 161 to the washing cylinder 160.

A sensor 165 for detecting the level of the washing water 161 may be installed in the washing cylinder 160.

An ultrasonic transducer 167 for applying ultrasonic vibration to the washing water 161 may be installed inside the washing cylinder 160.

A sand discharge pipe 230 installed at a lower portion of the washing cylinder 160 for discharging the sand washed through the washing drum 170 to the outside of the washing cylinder 160, A sixth conveying skew 240 for conveying the sand discharged from the sand discharge pipe 230, a dewatering means 250 for dewatering the sand conveyed from the sixth conveyance screw 240, A water tank 510 for storing water to be supplied to the first water supply pipe 13, the first water supply pipe 91, the second water supply pipe 211, the first water supply pipe 110 and the second water supply pipe 220 .

The dewatering means 250 includes a dewatering hopper 251 for introducing the sand conveyed from the sixth conveyance screw 240 and a dewatering hopper 251 for spiraling along the length of the dewatering hopper 251 on the inner wall surface of the dewatering hopper 251, A guide line 252 installed on the dewatering hopper 251 for guiding sand introduced into the dewatering hopper 251 and a guide line 252 installed on the dewatering hopper 251 for supplying air to the dewatering hopper 251, An injection nozzle 253, and an air vent 254 installed in the dewatering hopper 251.

According to the present invention, coarse clods can be easily separated, and the organic clogs can be effectively removed by rotating the dredged soil in water to separate and clean the organic clogs, so that clean sand can be reused.

In addition, since the coarse-grained separation process, the organic contaminant separation process, and the washing process are performed in a closed space that is hardly in contact with the outside air, the generation of the odor is minimized and the generation of complaints can be effectively prevented.

1 is a view showing a dredged soil treatment apparatus of the present invention.
2 is a sectional view taken along the line AA in Fig.
FIG. 3 is a partially enlarged view of the organic impurity separation drum and the second conveyance screw in the present invention.
4 is a sectional view taken along line BB of Fig.
5 is a partially enlarged view of the cleaning drum and the fourth conveyance screw in the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same components are denoted by the same reference symbols whenever possible. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

As shown in the drawing, the dredged soil dredged in a river or the like is carried into the loading and unloading hopper 10. A rectangular grid screen 12 is installed on the upper part of the loading and unloading hopper 10 to separate the coarse waste such as wood, plastic, and metal from the dredged soil to be loaded. The dredged soil can be separated from the coarse waste 5 mm or more through the screen 12. When the loading storage hopper 10 is installed on the ground, the dredged soil can be transported through the conveyor to be brought into the loading storage hopper 10, creating a room for enclosing the upper part of the loading storage hopper 10, Leakage can be minimized.

The dredged soil carried into the loading storage hopper 10 is discharged to the outside through the discharge opening 11 formed in the lower part of the loading storage hopper 10. A sprinkling nozzle 13 and a drop buffer 15 can be respectively installed in the discharge opening 11 of the loading storage hopper 10 and a discharge opening 11 is provided below the discharge opening 11 of the loading storage hopper 10, And a first conveying screw 20 for conveying the dredged soil.

The drop buffer 15 protects the first conveyance screw 20 by relieving the falling impact of the dredged soil discharged to the discharge port 11 and protects the spraying nozzle 13 from the opposite side toward the fall buffer 15, So that the dredged soil can be smoothly fall into the first conveyance screw 20 without falling on the drop buffer 15. The drop buffer 15 is preferably inclined so that a water spray nozzle 14 is installed on the drop buffer 15 so as to spray high pressure water toward the fall buffer 15. Water sprinkled by the water spray nozzles 13 and 14 flows into the first conveyance screw 20 to help convey the dredged soil. The first conveying screw 20 is disposed in contact with the discharge port 11 so that no odor leaks occur.

The dredged soil conveyed through the first conveyance screw 20 is separated into a coarse dirt and a fine dirt in the dirt separating means 30. The dredged soil is separated into coarse particles of 3 mm or more such as gravel and fine particles of less than the coarse particles.

The contaminant separating means 30 includes a conveying screw 33 for conveying the dredged soil conveyed through the first conveying screw 20 and a filtration screen 34 having a porous structure rotating around the conveying screw 34 The coarse dirt of the dredged soil that has not been passed through the filtration screen 34 is pushed by the conveying screw 33 and escapes to the coarse particle discharge port 31. The fine particles that have passed through the filtration screen 33 are collected, (32). The filtration screen 34 is rotated by the driving of the motor and is supported on the support roller so that it can stably rotate in place. The filtration screen 34 is installed inside the case 35 and the coarse particle discharge port 31 and the fine particle discharge port 32 are respectively installed at the end portion and the lower portion of the case 35.

The coarse contaminants that have escaped to the coarse contaminant discharge port 31 are collected and reused through the conveyor 36. A water spray nozzle 37 for spraying high pressure water toward the filtration screen 34 is installed inside the case 35, It is possible to prevent clogging of the screen 34 and to cleanly separate and remove organic contaminants from coarse contaminants. High-pressure water is sprayed through the spray nozzle 37, and the generation of odor is minimized by preventing the case 35 from leaking odor.

The fine contaminants discharged through the fine particle discharge port 32 are conveyed through the second conveyance screw 40. The second conveyance screw 40 is installed below the micro-contaminant discharge port 32 and is disposed in contact with the micro-contaminant discharge port 32 so that no odor leaks occur.

A cylindrical body 50 having wash water 51 is provided to cover a part of the second conveyance screw 40 so that the inside of the cylindrical body 50 is installed in the hollow cylindrical body 50 and a part of the second conveyance screw 40 An organic contaminant separating drum 60 having a plurality of holes 61 for enclosing the washing water 51 and partially rotating and removing the organic contaminants from the fine contaminants conveyed by the second conveying screw 40, Respectively.

It is preferable that the organic contaminant separation drum 60 rotates by driving the motor 63 and rotates while being locked to the washing water 51 by 2/3 or more. The organic contaminant separation drum 60 can be fixedly mounted on the cylinder 50 through a bearing and rotated. The sand having a diameter of 75 μm or more that has not been passed through the organic contaminant separation drum 60 is pushed out by the second conveyance screw 40 and the organic contaminants such as organic substances of less than 75 μm passing through the organic contaminant separation drum 60 It is drained to the washing water 51 to be floated or settled. The organic contaminants are effectively separated and removed from the sand since the fine contaminants are washed while being immersed in the washing water 51. The odor due to the organic contaminants separated from the organic contaminant separation drum 60 is not generated because the leakage is blocked by the cylinder 50.

A lower cylinder 70 is extended to the lower portion of the cylinder 50. The lower tubular body 70 is preferably provided at a length corresponding to the length of the organic contaminant separation drum 60 and provides a settling place for organic contaminants from the washing water 51. The tubular body (50) is tapered toward the bottom so that the organic contaminants to be settled collect in the lower tubular body (70).

A third feed screw (80) is provided in the lower cylinder (70). The third conveyance screw 80 transports the organic contaminants precipitated in the lower tubular body 70 and discharges the organic contaminants to the outside. The lower tubular body 70 is formed in an arc shape, and the organic conveying screw 80, So that it can be smoothly transported. The organic contaminant discharge port 71 is provided in the lower tubular body 70 and the organic contaminants conveyed by the third conveying screw 80 through the organic contaminant discharge port 71 are discharged to the outside of the lower tubular body 70 together with the washing water 51 Discharged to the algae tank 310 and then moved to the sewage treatment plant and treated again.

The first clogging preventing means (90) is provided on the upper portion of the cylinder (50). The first clogging prevention means 90 prevents the holes 61 of the organic contaminant separation drum 60 from clogging due to organic contaminants. The first clogging preventing means 90 is provided inside the cylindrical body 50 and is disposed on the organic contaminant separation drum 60 and is arranged at a distance from the first spray pipe 91 and the first spray pipe 91 The first nozzle 93 is sprayed with the high pressure water in the holes 61 of the organic contaminant separation drum 60 exposed from the washing water 51 and the holes due to the organic contaminants (61).

The cylinder 50 is provided with a first washing water supply pipe 110 for supplying the washing water 51 and a sensor 120 for detecting the water level of the washing water 51 may be installed inside the cylinder 50, An ultrasonic vibrator 130 may be installed in the interior of the washing tub 50 to apply ultrasonic vibration to the washing water 51.

The first washing water supply pipe 110 supplies the washing water 51 so that the tubular body 50 maintains a certain water level and the washing water 51 is supplied to the first washing water supply pipe 110 ). The control unit 410 electrically connected to the sensor 120 determines the signal of the sensor 120 to be transmitted and outputs the signal to the motor control unit 410 of the water tank 510 The washing water 51 can be kept at a certain water level in the tubular body 50. [ And is supplied from the high-pressure water tank 510 of the water spray nozzles 13 (14) and (37). The ultrasonic transducer 130 applies ultrasonic vibration to the tubular body 50 and the washing water 51 to prevent deposition of organic contaminants on the inner wall surface of the tubular body 50 and to smoothly precipitate organic contaminants.

On the other hand, a sand discharge pipe 140 is installed in the lower part of the cylindrical body 50. The sand discharge pipe 140 discharges the sand separated through the organic contaminant separation drum 60 to the outside of the tubular body 50 and the organic contaminant separation drum 60 60, and discharges the separated sand through the organic contaminant separation drum 60 pushed by the third conveyance screw 80 to the outside of the cylinder 50.

A fourth conveyance screw 150 is installed below the sand discharge pipe 140. The sand of 75 mu m or more, which is discharged through the sand discharge pipe 140, is conveyed through the fourth conveyance screw 150. The fourth conveyance screw 150 is installed in contact with the sand discharge pipe 140 so that no odor leaks occur.

A cleaning cylinder 160 having a washing water 161 is installed to surround a part of the fourth conveying screw 150 and a second conveying screw 160 installed inside the washing cylinder 160 to receive the fourth conveying screw 150 A cleaning drum 170 having a plurality of holes 171 for cleaning the sand conveyed by the fourth conveyance screw 150 to clean the organic contaminants is installed do.

It is preferable that the cleaning drum 170 rotates in place by driving the motor 173 and rotates while being locked to the washing water 161 by 2/3 or more. The cleaning drum 170 is fixed to the cleaning cylinder 160 through the bearing and rotates. The washed sand passing through the washing drum 170 is pushed by the fourth conveying screw 150, and the washed organic contaminants are discharged to the washing water 161 to float or settle. The sand passing through the washing drum 170 is cleaned by removing the organic contaminants. The odor due to the organic contaminants removed through the washing drum 170 is not generated because odor is blocked by the washing cylinder 160.

The sedimentation cylinder 180 is extended below the washing cylinder 160. The sedimentation cylinder 180 is preferably provided at a length corresponding to the length of the washing drum 170, and a settling place of organic contaminants is provided from the washing water 161. The washing tubular body 160 is tapered downward to allow the organic contaminants to be collected in the sedimenting tubular body 180.

A fifth conveyance screw 190 is installed in the sedimentation cylinder 180. The fifth conveyance screw 190 conveys the organic contaminants settled in the settling cylinder 180 and discharges the organic contaminants to the outside. The settling cylinder 180 is formed in an arc shape to form an organic contaminant that is settled by the fifth conveyance screw 190 So that it can be smoothly transported. An organic contaminant discharge port 181 is provided in the sedimentation tank 180 and an organic contaminant conveyed by the fifth conveyance screw 190 is discharged to the outside of the sedimentation tank 180 through the organic contaminant discharge port 181, 310).

The second clogging preventing means 210 is provided on the upper portion of the washing cylinder 160. The second clogging means 210 prevents the holes 171 of the cleaning drum 170 from clogging due to organic contaminants. The second clogging preventing means 210 is disposed inside the cleaning cylinder 160 and is disposed on the cleaning drum 170 and is disposed at a distance from the second spray pipe 211 and the second spray pipe 211 The second nozzle 213 is formed of the second nozzle 213 and the holes 171 of the cleaning drum 170 exposed from the washing water 161 are filled with holes 171).

The washing tubular body 160 is provided with a second washing water supply pipe 220 for supplying the washing water 161 and a sensor 165 for detecting the water level of the washing water 161 may be installed inside the washing tubular body 160 And an ultrasonic transducer 167 for applying ultrasonic vibration to the washing water 161 may be installed inside the washing tubular body 160.

The second washing water supply pipe 220 supplies the washing water 161 so that the washing tub 160 maintains a certain level and the washing water 161 is supplied from the water tank 510 through the second washing water supply pipe 220. The control unit 410 electrically connected to the sensor 165 determines the signal of the sensor 165 to be transmitted and controls the driving of the motor in the water tank 510 so that the washing water 161 is maintained at a certain water level . The ultrasonic vibrator 167 applies ultrasonic vibration to the washing cylinder 160 and the washing water 161 to prevent deposition of organic contaminants on the inner wall surface of the washing cylinder 160 and to facilitate the precipitation of organic contaminants.

A sand discharge pipe 230 is installed on the lower part of the washing cylinder 160 and a sixth conveyance screw 240 and a dewatering unit 250 are sequentially installed from the sand discharge pipe 230.

The sand discharge pipe 230 discharges the cleaned sand through the washing drum 170 to the outside of the washing tub 160 and the washing tub 160 and the washing drum 170 in which the washing drum 170 is not installed, So that the sand pushed by the fourth conveyance screw 150 is discharged to the outside of the washing tubular body 160. The sixth conveyance screw 240 is installed in contact with the sand discharge pipe 230 so that odor leakage does not occur.

The sixth conveyance screw 240 is installed below the sand discharge pipe 230 and transfers the sand discharged from the sand discharge pipe 230 to the dewatering means 250. The dewatering means 250 is connected to the sixth conveyance screw 240, So that the sand can be dehydrated and reused.

The dewatering means 250 is provided with a dewatering hopper 251 for introducing the sand conveyed from the sixth conveyance screw 240 and a spiral shape along the length of the dewatering hopper 251 on the inner wall surface of the dewatering hopper 251 A guide line 252 for guiding the sand introduced into the dewatering hopper 251 to the lower portion of the dewatering hopper 251 and a guide line 252 for supplying air to the dewatering hopper 251, An injection nozzle 253, and an air vent 254 installed in the dewatering hopper 251.

The sand conveyed from the sixth conveyance screw 240 flows into the upper side of the dewatering hopper 251 and the sand introduced into the dewatering hopper 251 is guided along the guide line 252 to the lower part of the dewatering hopper 251 do. For example, when the dewatering hopper 251 is located at a higher position than the sand drainage pipe 230, the sixth conveyance screws 240 can be arranged in two or more to convey the cleaned sand to the dewatering hopper 251, The arrangement of the figures is merely illustrative.

It is preferable that the guide line 252 is installed up to about 1/3 point of the dewatering hopper 251 and the air jet nozzle 253 is installed on the wall of the dewatering hopper 251 so as to be inclined in the dewatering hopper 251 Form a whirl. As illustrated in the drawing, the air injection nozzle 253 is provided at an inclined position on the start side of the guide line 252, the end side of the guide line 252, and the lower side of the dewatering hopper 251, So that a whirl can be formed. The helical guide line 252 guides the sand to rotate along a whirl formed by the air jet nozzle 253.

The air injection nozzle 253 provided at the start side of the guide line 252 guides the sand introduced through the sixth conveyance screw 240 to rapidly descend the guide line 252, The air injection nozzle 253 provided at the end side rotates the sand falling from the guide line 252 and the air injection nozzle 253 provided at the lower side of the dewatering hopper 251 maintains the rotation state of the sand. The position and number of the air injection nozzles 253 will be designed in consideration of the processing capacity of the dewatering hopper 251, the inflow amount of the sand, and the like. The compressed air is compressed by an air compressor or the like and supplied to the air injection nozzle 253.

The sand rotating due to the air jet nozzles 253 collides with or collides with the inner wall surface of the dewatering hopper 251 to generate heat so that most of the moisture is evaporated and the air vent 254 And is discharged together with air. The dewatered sand is discharged to the lower part of the dewatering hopper 251, collected through the conveyor 281, and reused.

As described above, according to the present invention, it is easy to separate coarse clods, and by separating and washing organic clogs by rotating the dredged soil in water, the organic clogs can be effectively removed and the clean sand can be reused.

In addition, since the coarse-grained separation process, the organic contaminant separation process, and the washing process are performed in a closed space that is hardly in contact with the outside air, the generation of the odor is minimized and the generation of complaints can be effectively prevented.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined by the appended claims. It will be possible. The scope of the present invention is defined by the appended claims, and all differences within the scope of the claims are to be construed as being included in the present invention.

10: carry-in storage hopper 11: discharge port
12: Screen 13: Sprinkler nozzle
14: Sprinkler nozzle 15: Drop buffer
20: first conveying screw 30: contaminant separating means
31: coarse contaminant outlet 32: fine contaminant outlet
33: Feed screw 34: Filtration screen
35: Case 36: Conveyor
37: Sprinkling nozzle 40: Second feed screw
50: cylinder 51: washing water
60: organic impurities separation drum 61: hole
63: motor 70: lower cylinder
71: organic impurities outlet 80: third feed screw
90: First clogging prevention means 91: First water spray pipe
93: first nozzle 110: first washing water supply pipe
120: sensor 130: ultrasonic vibrator
140: Sand discharge pipe 150: Fourth feed screw
160: washing cylinder 161: washing water
165: sensor 167: ultrasonic vibrator
170: cleaning drum 171: hole
173: motor 180: settling cylinder
190: fifth conveying screw 181: organic contaminant outlet
210: second clogging prevention means 211: second water spray pipe
213: second nozzle 220: second washing water supply pipe
230: Sand exhaust pipe 240: Sixth feed screw
250: Dewatering means 251: Dewatering hopper
252: Guide line 253: Air injection nozzle
254: Air vent 281: Conveyor
310: storage tank 410: control unit
510: aquarium

Claims (8)

A loading and unloading hopper 10 for loading and storing dredged soil;
A sprinkling nozzle 13 installed at a discharge port 11 of the loading and unloading hopper 10;
A dropping buffer 15 installed at a discharge port 11 of the loading and unloading hopper 10;
A first conveying screw 20 installed below the discharge port 11 of the loading and storing hopper 10 for conveying the dredged soil discharged from the discharge port 11;
Separating the coarse dirt and the fine dirt from the dredged soil conveyed through the conveying screw 20 by being connected to the first conveying screw 20 and separating the coarse dirt with the coarse dirt outlet 31 and the fine dirt outlet 32 Means (30);
A second conveyance screw 40 installed below the micro-contaminant discharge port 32 for conveying micro-contaminants discharged from the micro-contaminant discharge port 32;
A cylinder (50) having an inner hollow structure and surrounding the middle of the second feed screw (40) and having wash water (51);
The second conveying screw 40 is installed inside the cylindrical body 50 and surrounds the second conveying screw 40. The second conveying screw 40 rotates while being partially immersed in the washing water 51 and removes organic contaminants from the fine contaminant conveyed by the second conveying screw 40 An organic contaminant separation drum (60) having a plurality of holes (61) for separating the sand from the sand;
A lower cylinder (70) extending downwardly of the cylinder (50) and providing a settling place of organic contaminants from the washing water (51);
A third conveying screw 80 installed in the lower cylinder 70 for conveying the organic contaminants settled in the lower cylinder 70 and discharging the organic contaminants to the outside;
A first spraying pipe 91 and a second spraying pipe 91 disposed inside the cylindrical body 50 and disposed on the organic contaminant separation drum 60 and spaced apart from the first spraying pipe 91 and the first spraying pipe 91 A first clogging preventing means 90 for preventing clogging of the holes 61 by sprinkling water on the organic contaminant separation drum 60 exposed from the washing water 51; And
And a first washing water supply pipe (110) for supplying the washing water (51) to the tubular body (50)
A sand discharge pipe 140 installed at a lower portion of the cylindrical body 50 for discharging the sand separated through the organic contaminant separation drum 60 to the outside of the cylindrical body 50,
A fourth conveying skew 150 disposed under the sand discharge pipe 140 for conveying sand discharged from the sand discharge pipe 140,
A washing cylinder 160 having a hollow structure and surrounding a part of the fourth conveyance screw 150 and having washing water 161,
The fourth conveyance screw 150 rotates while partially immersed in the wash water 161 to wash the sand conveyed by the fourth conveyance screw 150, A cleaning drum 170 having a plurality of holes 171,
A settling cylinder 180 extending downward from the washing cylinder 160 for providing a settling place for organic contaminants from the washing water 161,
A fifth conveying screw 190 installed in the sedimenting cylinder 180 for conveying the organic impurities precipitated in the sedimenting cylinder 180 and discharging the organic contaminants to the outside,
A second nozzle 213 disposed inside the washing cylinder 160 and positioned above the washing drum 170 and arranged at a distance from the second spray pipe 211 and the second spray pipe 211, A second clogging preventing unit 210 for preventing the clogging of the holes 171 by spraying the washing drum 170 exposed from the washing water 161,
And a second washing water supply pipe (220) for supplying the washing water (161) to the washing cylinder (160)
A sand discharge pipe 230 installed at a lower portion of the washing cylinder 160 for discharging the sand washed through the washing drum 170 to the outside of the washing cylinder 160,
A sixth conveying skew 240 installed under the sand discharge pipe 230 for conveying sand discharged from the sand discharge pipe 230,
A dewatering means 250 for dewatering the sand conveyed from the sixth conveyance screw 240,
A water tank (not shown) for storing water supplied to the spray nozzle 13, the first spray pipe 91, the second spray pipe 211, the first rinse water supply pipe 110 and the second rinse water supply pipe 220 510)
The dewatering means 250 includes a dewatering hopper 251 for introducing the sand conveyed from the sixth conveyance screw 240 and a dewatering hopper 251 for spiraling along the length of the dewatering hopper 251 on the inner wall surface of the dewatering hopper 251, A guide line 252 installed on the dewatering hopper 251 for guiding sand introduced into the dewatering hopper 251 and supplying air to the dewatering hopper 251 to dewater the sand, A nozzle (253), and an air vent (254) installed in the dewatering hopper (251).
The method according to claim 1,
Wherein a sensor (120) for detecting the level of the washing water (51) is installed in the inside of the tubular body (50).
The method according to claim 1,
Wherein the tubular body (50) is provided with an ultrasonic vibrator (130) for applying ultrasonic vibration to the washing water (51).
delete The method according to claim 1,
Wherein a sensor (165) for detecting the level of the washing water (161) is installed in the washing cylinder (160).
The method according to claim 1,
Wherein an ultrasonic vibrator (167) for applying ultrasonic vibration to the washing water (161) is installed in the washing tubular body (160).
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