KR100702363B1 - moisture remove apparatus of sludge - Google Patents

Abstract

The present invention relates to a device for reducing the water content of the sludge generated in sewage treatment plants, water purification plants, industrial wastewater treatment plants, etc. to less than the reference value to minimize environmental pollution during incineration or landfill; A pressurized conveying unit for applying pressure to the introduced sludge cake, and a distribution heating unit for dispersing the sludge cake conveyed by the pressurizing conveying unit and heating the sludge cake to be distributed and transported at a constant temperature to evaporate moisture. It is characterized by consisting of; conveying the sludge cake and removing the latent heat possessed by the sludge cake to discharge to the outside.

According to the present invention, the water content of the sludge cake is lowered to 50% or less, so the sludge cake generated in sewage treatment plants, water purification plants, industrial wastewater treatment plants, etc. is expected to reduce the environmental pollution even when landfilling and incineration, as well as to treat the Economical cost savings can be expected.

 Sludge, moisture, heater, water vapor, blowing

Description

Moisture removal apparatus of sludge

1 is a system configuration diagram showing an apparatus for removing water from sludge according to the present invention.

Figure 2a is an enlarged cross-sectional view of the distribution heating unit according to the present invention.

Figure 2b is a perspective view of the dispersion heater according to the present invention.

Figure 2c is a view showing for explaining the configuration of the distributed heater according to the present invention.

FIG. 2D is an enlarged view of a section taken along the line “A”-“A” of FIG. 2C;

Figure 2e is a view showing an external perforation network according to the present invention.

3 is a perspective view showing a cooling transfer unit according to the present invention.

4 is a sectional view showing a deodorizing means according to the present invention.

*** Description of the symbols for the main parts of the drawings ***

1: sludge cake 100; Pressurized transfer unit 110: transfer pipe

120: hopper 130: transfer screw 200: distribution heating unit

210: distributed heater 220: exhaust duct 300: grinding means

310: transfer path 320: cutting blade 400: cooling transfer unit

410: cooler 420: transfer screw 430: exhaust duct

460: collection box 500: deodorizing means 510: housing

520: inlet 540: spray nozzle 550: nonwoven fabric layer

560: sawdust layer 570: activated carbon layer 580: exhaust vent

The present invention relates to an apparatus for removing sludge of water, and more particularly, to reduce the water content of sludge generated in sewage treatment plants, water purification plants, industrial wastewater treatment plants, etc. to a threshold or less, so as to minimize environmental pollution during incineration or landfill. It is about.

In general, sludge refers to sludge, industrial waste or sewage treatment sediment. In the process of acid-treating the metal surface or the metal surface such as boilers, ships, tanks, etc., which are in contact with water, the metal surface is peeled and deposited to form a mud. The main component of the sludge is metal or a compound thereof.

At this time, the sludge is typically dewatered using a belt press, a filter press, a screw press, a centrifugal separator, etc. used in existing sewage treatment plants and water treatment plants, and is treated in the form of sludge-cake.

By the way, such sludge cake has a variety of methods for the final treatment of the water content is 70 to 90%, but can be largely divided into a method of landfill and incineration in the form of sludge cake.

First, when the sludge is buried in the ground, leachate generated from the sludge penetrates into the ground, and groundwater is contaminated, resulting in the destruction of the ecosystem. Recently, when the water content of the sludge exceeds the reference value, the landfill is reclaimed. It is forbidden.

Next, when incineration of sludge, the water content is very high, and during the incineration process, water evaporates, causing odor and secondary fatal dioxin, which adversely affects the atmospheric environment and relies on absolute imports. There was a problem that consumes a lot of energy.

Therefore, to solve these problems, the object of the present invention is to reduce the environmental pollution by reducing the high moisture of the sludge cake in a state in which the water of the sludge is removed below a certain reference value, the energy of incineration treatment It is to provide a sludge moisture removal device to reduce waste.

The present invention relates to an apparatus for removing sludge of water; Pressurized conveying unit for applying pressure to the introduced sludge cake, and the sludge cake conveyed by the pressurizing conveying unit is uniformly distributed and distributed to the sludge cake which is distributed and transported to 220 ℃ ~ 280 ℃ distribution to evaporate moisture Characterized in that consisting of a heating unit, and a cooling transfer unit for transporting the sludge cake while removing the latent heat of the sludge cake to discharge to the outside.

With reference to the accompanying drawings, the water removal device of the sludge according to the present invention will be understood by the embodiments described in detail below.

1 is a system configuration diagram showing an apparatus for removing water from sludge according to the present invention, FIG. 2A is an enlarged cross-sectional view of a distribution heating unit according to the present invention, and FIG. 2B is a perspective view of a distribution heater according to the present invention, and FIG. Figure 2c is a view showing the configuration of the distributed heater according to the present invention, Figure 2d is an enlarged view showing a cross-section of the "A"-"A" line of Figure 2c, Figure 2e is an external perforated network according to the present invention 3 is a perspective view showing a cooling transfer unit according to the present invention, Figure 4 is a cross-sectional view showing a deodorizing means according to the present invention.

According to Figure 1, the sludge moisture removal device according to the present invention is a pressure transfer unit 100 for applying pressure to the sludge cake 1 is introduced, and the sludge cake (transmitted by the pressure transfer unit 100) 1) the distribution heating unit 200 for uniformly dispersing and heating the sludge cake 1 to be dispersed and transported to 220 ℃ ~ 280 ℃ to evaporate the moisture in the water vapor state, and through the distribution heating unit 200 The sludge cake (1) passing through the crushing means 300 and the crushed sludge cake (1) broken below a certain size by passing through the crushing means (300) to finely crush the sludge cake (1) in a state where water is removed When the latent heat (1) has a cooling transfer unit 400 to discharge to the outside and the water vapor containing moisture and dust from the distribution heating unit 200 and the cooling transfer unit 400 is introduced into the air Desorption to remove particles and odors from the inside It consists of a taking means (500).

Hereinafter, each component part is explained in full detail.

The pressure transfer unit 100 is provided with a hopper 120 that can be easily introduced into the sludge cake 1 to the upper side of the transfer pipe 110, the inside of the transfer pipe 110 A pressurizing feed screw 130 having a spiral blade 134 arranged horizontally to transfer the sludge cake 1 introduced through the hopper 120 in a horizontal direction is provided. At this time, the end of the central shaft 132 of the pressurizing feed screw 130 is rotated by the driving force received when the drive shaft (M1 ') of the motor (M1) is rotated and introduced through the hopper 120 ( While applying pressure to 1) it is transferred to the distribution heating unit 200 in the horizontal direction.

The distribution heating unit 200 is horizontally disposed as shown in Figures 2a to 2e is evenly distributed sludge cake (1) to be transferred in accordance with the operation of the transfer screw 130 of the pressure transfer unit (100). A plurality of guide holes 202 to be formed are formed and distributed heater having a heater 204 for evaporating moisture by heating the sludge cake 1 conveyed through the guide hole 202 to 220 ℃ ~ 280 ℃ ( 210, an exhaust duct 220 provided on the upper side of the dispersing heater 210 to collect steam containing odors and dust generated by heating of the heater 204, and an exhaust duct 220 thereof. Blowing fan 224 and the lower portion of the distribution heater 210 to be discharged to the outside is provided on the upper side of the water vapor mixed with dust and odor generated by the distribution heater 210 through the pipe 222 to the outside. Is provided in the sludge cake (1) is transferred through the dispersion heater 210 When the large particles generated during the free fall fall free guide member 230 is formed to form a slope (320a) for collecting it, and the collection container 240 for collecting the dust guided by the guide member 230.

Here, the distributed heater 210 maintains a predetermined distance on the outside of the cylindrical body 212, in which the front head portion 212a protrudes in a dome shape or a cone shape, and is provided with a heating wire 214 and a ceramic insulating layer 216 is formed. The heater 204 is provided on the outer surface of the heater 204 and a plurality of sludge cake (1) transferred by the rotation of the transfer screw 130 in the pressure transfer unit 100 can be moved while pushing. The guide groove 218a for conveying the guide member 218 and the guide member 218 is formed to maintain a predetermined interval on the surface, and the outer side of the guide member 218 to guide the hole 202 together with the guide groove 218a The outer perforated network 219 is formed.

Here, the guide member 218 is formed so as to form a protrusion 218b to maintain a constant interval to form a guide groove 218a, but the hollow portion 218c is formed inside the protrusion 218b. Thus, radiant heat by the heater 204 can be evenly transmitted to the sludge cake 1.
In this case, in order to maintain the temperature of 220 ℃ ~ 280 ℃ in the sludge cake, the heater should be heated so that the internal temperature 250 ℃ ~ 300 ℃, the outer surface temperature 160 ℃ ~ 180 ℃, the temperature slightly Can have the difference of.
In addition, the front portion of the protrusion 218b of the guide member 218 forms a triangular guide surface 218d so that the sludge cake 1 pressurized and conveyed by the pressure transfer unit 100 is smoothly dispersed without being resisted. It is possible to move along the guide groove 218a. In addition, the rear of the guide groove 218a of the guide member 218 forms an inclined surface 218e to the outside so that the ground or a portion of the sludge cake 1 conveyed does not stay in the guide groove 218a. To be easily discharged to (300).

On the other hand, the external perforated network 219 is formed of a fine wire mesh formed with a plurality of through-holes, for example, maintaining a 0.5 mm interval, so that the heater 204 is heated, the moisture generated in the process of drying the sludge cake (1) This is discharged to the outside. Here, the external perforated network 219 is divided into a semi-cylindrical upper net 219a and a lower net 219b to surround the outside of the guide member 218. At this time, the upper net 219a and the lower net 219b are formed to protrude along the outer circumferential surface of the connecting portions 219c and 219c 'formed with a plurality of coupling holes 219d and 219d' for mutual coupling. ) And coupling using a fastening member such as a nut (N).

Due to the configuration of the dispersion heater 210, the sludge of the sludge cake 1 is solidified by the heat of the heater 204, so that the protein contained in the sludge becomes solidified to separate and promote the solid content and the water. The water content of 1) can be dehydrated to 50% or less.

The grinding means 300 is a cutting blade for pulverizing the sludge cake (1) to a predetermined size or less in the middle portion of the transport path 310 in the lower portion of the outlet side of the distribution heating unit (200) ( 320 and a motor M2 fixed to the drive shaft M2 ′ so that the cutting blade 320 is rotatable to provide rotational force. Therefore, when the sludge cake 1 in which water is removed while passing through the distribution heating unit 200 is freely dropped along the transfer path 310, the sludge cake 1 is crushed to a predetermined size or less.

Here, the crushing means 300 is configured to be introduced directly into the cooling transfer unit 400 when the sludge cake discharged through the distribution heating unit 200 as an additional means does not have a crushing means 300. It is also possible.

As shown in FIG. 3, the cooling transfer part 400 includes an inner wall 412 and an outer wall 414, and an upper end is opened between the inner wall 412 and the outer wall 414 to fill the coolant 2, and the inner wall. Inside the 412 is a cooler 410 having a semi-cylindrical moving path 416 having an open upper portion in a horizontal direction and horizontally provided at the cooler 410 and flowing from the grinding means 300. The heat of the sludge cake (1) itself is transferred by the operation of the transfer screw 420 and the transfer screw 420 to receive and rotate the rotational force of the motor (M3) in order to transfer the crushed sludge cake (1) Exhaust duct 430 provided on the upper side of the cooler 410 to collect water vapor mixed with fine dust and odor generated by the cooling water 410 is warmed by passing through the cooler 410, and the It is provided on the upper side of the exhaust duct 430, the cooler 410 through the pipe 432 Blowing fan 440 which is operated to collect the odor generated by the odor and dust, etc., and the sludge cake (1) passed through the cooler 410 is provided on the outlet 450 side It consists of a collection box 460.

At this time, the cooler 410 is provided with a plurality of partitions 413 between the inner wall 412 and the outer wall 414 to be filled with the coolant 2, one partition 413 has a lower end to form a passageway The adjacent partition wall 413 'has a relatively low upper end portion, so that the coolant 2 flowing through the coolant inlet 417 provided on one side moves toward the coolant outlet 418 on the other side, and the coolant on the upper side and the lower coolant on the lower side. Mixing evenly will increase the cooling efficiency.

On the other hand, the sludge cake (1) is broken more evenly while the conveying screw 420 is rotated, the sludge cake (1) by supplying the external air to the sludge cake (1) through a separate blower (470) It is cooled while further increasing the cooling efficiency in contact with the air and is discharged.

The deodorizing means 500 of the exhaust duct 220 and the cooling transfer unit 400 of the distribution heating unit 200 on one side of the lower portion of the housing 510 in which a constant space is formed therein as shown in FIG. An inlet 520 is provided on one side through which the water vapor containing water, odors, dusts, etc. are introduced through the exhaust duct 430, and a washing tank 530 in which the washing water 3 is filled in the lower side of the inlet 520 is provided. Is provided, one side of the housing wall surface 510 of the inlet 520 is provided with a spray nozzle 540 for spraying the washing water (3) in the droplet state.

On the other hand, the non-woven fabric layer 550 is provided on the upper side of the non-woven fabric layer 550 to maintain a constant distance from the inlet 520 and to prevent dust such as fine dust from being discharged to the outside. Sawdust layer 560 is provided to absorb the odor of the air discharged to the outside while maintaining a gap, the top of the sawdust layer 560 also maintains a constant interval and secondary to the odor of the air discharged to the outside Activated carbon layer 570 is provided for removal, and an exhaust port 580 is provided on the upper portion thereof so that the purified air can be discharged to the outside.

When water vapor including dust and odor introduced through the inlet 520 is introduced by the above configuration, most of the dust is generated by spraying the washing water 3 discharged through the injection nozzle 540. And while the water vapor particles are trapped and rise through the nonwoven fabric layer 550, sawdust layer 560 and activated carbon layer 570 is purified and discharged to the outside.

On the other hand, the upper side of the washing tank 530 is provided with a drain valve 532 for discharging it when the washing water (3) is above a certain level, the lower portion of the washing tank 530 is formed with a discharge port 534 on one side It is circulated by the pump 590 provided to go through the circulation process to be discharged to the injection nozzle.

Hereinafter, an operation example of the sludge water removing apparatus according to the present invention will be described in detail with reference to FIGS. 1 to 4.

First, when the sludge cake (1) is put into the hopper 120 provided on one side of the upper side of the transfer pipe 110 of the pressure transfer unit 100 and then operating the control panel (not shown) of the system motor (M1) ) Is operated to rotate the transfer screw 130 for pressure. Thereby, the sludge cake 1 introduced through the hopper 120 is transferred while being pushed toward the distribution heating unit 200 while receiving an input.

The sludge cake 1 pressurized and conveyed by the pressure transfer part 100 is gradually dispersed in the frontal part 212a of the body 212 of the distributed heater 210 constituting the distribution heating part 200 and of the heater 204. It is evenly distributed and discharged along the guide hole 202 formed by the guide member 218 and the outer perforated network 219 provided on the outer surface. At this time, the heater 204 is also heated to a predetermined temperature by the control of the control panel to evaporate the moisture.

And it is heated by passing through the distribution heating unit 200 to discharge the water to a predetermined ratio or less and rotated by the operation of the motor (M2) while falling along the conveying path 310 provided in the vertical direction of the grinding means (300) In contact with the cutting blade 320 is pulverized into a predetermined size or less.

 The sludge cake 1 pulverized as described above is crushed and agitated by the rotation of the feed screw 420 operated by the motor M3 by being introduced into one side of the cooler 410 of the cooling transfer part 400. Cooled and transferred to the outlet 450 is filled in the collection box (460).

At this time, the external air is introduced through the blower 470 to be supplied to the sludge cake 1 can be expected to increase the cooling efficiency of the sludge cake (1).

Meanwhile, exhaust ducts 220 and 430 and blower fans 224 and 440 are provided at the upper portion of the dispersion heater 210 and the cooler 410 to discharge water vapor mixed with dust and odors. It is introduced through the inlet 520, which is primarily collected by the droplets of the washing water 3 sprayed through the injection nozzle 540, the nonwoven fabric layer 550, the sawdust layer 560, and the activated carbon layer 570. Passing through the secondary odor and dust to be discharged to the outside through the exhaust port 580.

As described above, embodiments of the present invention have been described in detail, but the scope of the present invention is not limited thereto, and the scope of the present invention extends to the range substantially equivalent to the embodiments of the present invention.

As can be seen from the above description, according to the present invention, the water content of the sludge cake 1 is lowered to 50% or less, so that the environmental pollution is prevented even when the sludge cake generated in sewage treatment plants, water purification plants, industrial wastewater treatment plants, etc. is landfilled and incinerated. Not only can we expect to see a reduction, but we can also expect economic savings to deal with it.

In addition, the sludge cake is distributed evenly while passing through the distribution heater 210 of the distribution heating unit 200 to prevent the sludge cake from being biased to either side, thereby increasing its water removal efficiency.

Claims (8)

Transfer pipe 110 is provided with a hopper 120, the sludge cake (1) can be easily put on one side upper portion, and the conveying for pressurizing the sludge cake (1) flowing through the hopper 120 in one direction Pressurized transfer unit 100 for applying pressure to the sludge cake (1) is made up of a screw 130 and a motor for providing a rotational force to the transfer screw 130; 220 ° C ~ 280 ° C temperature in the sludge cake (1) to be transported through the guide hole 202 is formed a plurality of guide holes 202 is formed that the sludge cake (1) transferred from the pressure transfer unit 100 Dispersion heater 210 is provided with a heater 204 for heating the water to evaporate moisture in the state of steam, and the exhaust duct 220 and the blowing fan 224 is provided on the upper side of the dispersion heater 210 for discharging water vapor. And a collecting box 240 disposed below the dispersing heater 210 to collect large dust particles generated while the sludge cake 1 is transferred through the dispersing heater 210. 200; Conveying the sludge cake (1) consists of an inner wall 412 and the outer wall 414 to remove the latent heat of the sludge cake (1) to the outside and between the inner wall 412 and the outer wall 414 The cooler 2 is opened to fill the coolant 2, and the inner side of the inner wall 412 is provided with a cooler 410 having a semi-cylindrical moving path 416 having an open upper portion in the longitudinal direction, and horizontally provided in the cooler 410. In order to transfer the sludge cake 1 introduced from the distribution heating unit 200, a transfer screw 420 that receives and rotates the rotational force of the motor, and a sludge cake 1 that is transferred by the operation of the transfer screw 420. Exhaust duct 430 provided on the upper side of the cooler 410 so as to collect the steam and the steam mixed with odor generated by the cooling water 2 is warmed by the heat of the cooling through the cooler 410 and Passing the blowing fan 440 and the cooler 410 Sludge cake (1) to remove the water sludge of the sludge characterized in that it comprises a; cold transfer unit consisting of a collection box (460) provided on the outlet straight. delete delete The method of claim 1, wherein the dispersion heater 210; The heater 204 is provided with a heating wire 214 and a ceramic insulation layer 216 is maintained at a constant interval on the outside of the cylindrical body 212, the front head portion 212a protrudes in a dome shape or a cone shape, and The protrusion 218b is formed on the surface of the heater 204 so as to form a plurality of transfer guide grooves 218a at a predetermined distance on the surface while maintaining a predetermined interval in the longitudinal direction, but the protrusion 218b The front part of the) is a guide member 218 and the guide member 218 is formed with a triangular guide surface 218d is formed so that the sludge cake (1) pressurized by the pressure transfer unit 100 is smoothly distributed without resistance The outer portion of the sludge to remove the water sludge of the sludge characterized in that it consists of an outer perforated network 219 to form a guide hole 202 with the guide groove (218a). delete The method of claim 1, When the sludge cake (1) of the predetermined moisture is removed through the distribution heating unit 200, the cutting blade 320, which is operated by the driving force of the motor rotates to finely pulverize to a predetermined size or less and the cooling is performed. Grinding means 300 for supplying to the sending unit 400; Sludge moisture removal device further comprising. The method of claim 1, When the water vapor containing moisture and dust from the distribution heating unit 200 and the cooling transfer unit 400 is introduced deodorizing means 500 for removing the particles and odor in the air and discharged to the outside; Sludge moisture removal device, characterized in that. The method of claim 7, wherein the deodorizing means (500); A certain space portion is formed therein and is provided at one side of the housing 510 in which an exhaust port 580 is formed, and contains odors and dust generated from the distribution heating unit 200 and the cooling transfer unit 400. An inlet 520 into which water vapor is introduced, and an injection nozzle 540 provided on one side of the housing to spray washing water in the form of droplets, and maintaining a predetermined interval with the inlet 520 and are provided on the upper side of the inlet 520. Non-woven fabric layer 550 to prevent dust, such as dust is discharged to the outside, and a sawdust layer provided to maintain a predetermined interval on the upper portion of the nonwoven fabric layer 550 to absorb the odor in the air discharged to the outside ( 560 and an activated carbon layer 570 provided at the top of the sawdust layer 560 to maintain a predetermined interval to remove odors in the air discharged to the outside and to discharge it to the exhaust port. The water removal apparatus of the sludge.

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