KR101813843B1 - Apparatus for removing dust of sewage sludge - Google Patents

Abstract

The present invention improves the structure so that dust and odors can be easily removed and the cleaning of the rotating filter can be easily performed by allowing the rotating filter to be partially rotated while being immersed in the treated water and causing air contaminated by dust and odor to pass through the rotating filter And more particularly, to a dust removing apparatus for drying sewage sludge.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus for removing dust from sewage sludge,

The present invention relates to a dust removing apparatus which is produced in the course of carbonization, drying, composting, anaerobicization and incineration of organic wastes such as sewage sludge, The present invention relates to a dust removing device which is produced when sewage sludge drying is carried out by allowing air to pass through a rotary filter and a curtain member, thereby improving the structure of the rotary filter so as to facilitate the removal of dust and the cleaning of the rotary filter.

The method of drying sewage sludge is largely direct and indirect type. In the case of direct type, the indirect type is mainly used because of the smell generated when the foreign materials such as hair and fiber included in the sludge are burned.

The treatment of sewage sludge is mainly biological treatment because it is more economical than chemical treatment or physical treatment and it can remove nitrogen and phosphorus nutrients as well as organics to be. However, since the biological treatment is carried out through the activity of the growing microorganisms by feeding the pollutants, it is necessary to maintain a certain number of microorganisms in the reaction tank in order to obtain proper treatment efficiency continuously. Therefore, There is a problem that it must be withdrawn from the system and discarded.

The microbial mass extracted from the reaction tank is called sewage sludge. Sewage sludge that has undergone coagulation and dehydration by adding chemicals before final disposal is called dehydration cake.

The water content of the sewage sludge withdrawn from the reaction tank is about 92% and the water content of the dehydrated cake is about 75%. Generally, what is called sewage sludge in the treatment means most of the dehydrated cake before final disposal.

The sludge is dried as a treatment for dehydration cake, and it is used as compost in agriculture field or as fuel for cement manufacturing and thermal power plant. However, unlike the positive aspect of recycling wastes through recycling of such sludge and preventing pollution of the ocean and land, in the drying process for treating organic wastes such as sewage sludge, the smell and harmful gas are generated, By not properly treating the gas, it has caused a problem of generating another environmental pollution by destroying a pleasant living environment and polluting the atmosphere.

With respect to sludge treatment as an organic waste, many prior art techniques such as Korean Patent Publication 10-2006-0115691 (Published Date 2006.11.09) and Korean Patent Publication 10-2006-0129144 (Published Date 2006.12.15) , There is no significant progress in smell and noxious gas generated during the drying process.

FIG. 1 shows a sludge drying apparatus disclosed in Korean Patent Laid-Open No. 10-2006-0115691, wherein the charged sludge is moved inside the main body 10 by the rotation shaft 11 and the paddle 12, The steam generated in the process of drying the steam supplied through the steam generator 10 is discharged to the outside through the steam discharge pipe 18 separately piped to the upper and lower sides of the main body 10. At this time, Contaminates the environment.

In addition, even in the case of the regenerative utility model No. 20-0335340 (Publication date 2003.12.06) and Registration Practical Utility Model No. 20-0381200 (Publication date 2005.04.08), it is also possible to provide a device for completely removing the moisture contained in the food waste, Only the configuration is disclosed.

FIG. 2 shows the organic waste drying apparatus disclosed in the above-mentioned Korean Utility Model Registration No. 20-0335340, wherein the steam generated as the waste is dried through the preheating, evaporation and deceleration periods is supplied to the hot air generator 30, the dust and odors of the waste are discharged together with the steam, thereby contaminating the surrounding air environment.

Thus, conventional techniques for drying most organic wastes have not presented effective alternatives to the problem of odor and air pollution by aiming at the efficiency of drying and the complete removal of water, thus causing many problems of environmental pollution there was.

Korean Patent Laid-Open No. 10-2006-0115691 (published date 2006.11.09) Korean Patent Laid-Open No. 10-2006-0129144 (Publication date 2006.12.15) Registration Utility Model Bulletin 20-0335340 (Publication Date 2003.12.06) Registration Utility Model Bulletin 20-0381200 (Announcement date 2005.04.08)

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a sewage sludge drying apparatus and a sewage sludge drying apparatus which are capable of effectively treating dust generated during drying of sewage sludge, And an object of the present invention is to provide a dust removing apparatus.

According to an aspect of the present invention, there is provided an apparatus for removing dust generated when a sewage sludge is dried in a drying apparatus,

And an air outlet for discharging contaminated air including dust and odor from the drying device to one side and an outlet for discharging the filtered air to the other side are formed on one side, A housing having a vertical partition wall partitioning an inlet and an outlet and having a lower end spaced from an upper surface of the treatment water;

And a rotary filter disposed between the lower end of the vertical partition and the process water so that a part of the process water is submerged and a remaining part of the process water is located in the space,

Wherein the vertical partition wall divides the space into an inflow space through which the polluted air flows through the inflow port and a discharge space through which the purified air is discharged through the discharge port,

A horizontal partition wall is arranged in a staggered manner on the inner wall of the housing on the discharge space side and the vertical partition wall,

Wherein the rotary filter comprises a plurality of curtain members formed in a tubular shape of a mesh-shaped adsorption net to which the dust is adsorbed, one end of which is fixed at predetermined intervals on the inner side of the adsorption net and adsorbs the dust, And a plurality of arc shaped bucket members spaced apart from each other on the outer surface of the adsorbing net to feed the treated water to the outer surface of the adsorbing net during the rotation of the adsorbing net and having a partition at regular intervals,

Wherein the curtain member comprises a fiber curtain made of fiber yarn and a vinyl curtain made of vinyl, wherein the fiber curtain and the vinyl curtain are alternately disposed inside the adsorption net,

And an extended partition wall extending from a lower end of the vertical partition wall,

The extension partition wall includes a first extension partition wall extending horizontally from the lower end of the vertical partition wall toward the inlet side inner wall and a second extension partition wall bent downward from the end of the first extension partition wall,

And air introduced into the inlet port is discharged to the outlet port via the adsorption net and the curtain member.

In the apparatus of the present invention, a plurality of concave channel grooves for distributing treatment water contained in each of the cut-away members and guiding the treatment water to be supplied to the adsorption net are formed.

First, according to the present invention, since the lower part of the rotary filter is disposed in the treated water in the housing, the rotary filter attached with the sludge dust in the introduced outdoor air is continuously cleaned, thereby improving the purification efficiency.

Second, the apparatus of the present invention includes a fiber curtain 350A and a vinyl curtain 350B inside the adsorption net 335, so that the fiber curtain 350A adsorbs and removes dust in the air, and the vinyl curtain 350B The time taken for the introduced air to be discharged to the outside of the adsorption net 335 is retarded and the dust removal efficiency is improved by attaching to the adsorption net 335, the fiber curtain 350A and the vinyl curtain 350B.

Third, there is an advantage that dust and odor substances can be easily removed by raising the treated water with the bucket member and spraying it to the space between the rotating filter and the vertical partition wall to form an oil film, and the washing of the dust- Thereby improving the purification efficiency.

Fourthly, since a plurality of curtain members are provided inside the rotary filter, the filtering efficiency of the rotary filter can be improved by filtering unfiltered dust and odorous substances in the air passing through the rotary filter.

Fifth, due to the structure of the partition structure in which the partition and the channel grooves are spaced apart at equal intervals in the bucket member, the water is uniformly formed even when inclination is generated in the rotary filter in the process of raising the treatment water between the rotary filter and the vertical partition wall The dust removal rate can be increased.

Sixth, the first elongated partition 232 and the second elongated partition 234 are formed so as to be folded so as to surround the outside of the rotary filter 300, so that the introduced outside air is guided to the rotary filter 300 via a longer path Thereby improving the filtering efficiency.

1 is a sectional view showing an example of a conventional sludge drying apparatus.
2 is a sectional view showing an example of a conventional organic waste drying apparatus.
3 is a configuration diagram illustrating a dust removing apparatus according to the present invention.
4 is a perspective view of the rotary filter of Fig. 3;
5 is a schematic cross-sectional view of the rotary filter,
6A is a perspective view showing a fiber curtain,
6B is a perspective view showing a vinyl curtain,
7 is a perspective view showing a configuration of a bucket member according to the present invention.
8 is a view showing a modification of the partition wall member of the present invention.

The apparatus for removing dust generated during the drying of the sewage sludge according to the embodiment of the present invention absorbs dust and odors generated during carbonization, drying, composting, anaerobicization, and incineration of organic wastes such as sewage sludge and food to remove dust, So that the air pollution can be reduced.

3 to 7 showing an embodiment of the apparatus according to the present invention, an apparatus for removing dust generated when a sewage sludge is treated in a drying apparatus according to an embodiment of the present invention,

An inlet 110 through which polluted air including dust and odor generated from the drying device of the sewage sludge is introduced into one side and a discharge port 120 through which the filtered air is discharged to the other side is formed on the other side, 1 having a vertical partition wall 210 filled with a space 2 and partitioning the inlet 110 and the outlet 120 and having a lower end spaced apart from the upper surface of the treated water, )and; And a rotating body 30 which is disposed between the lower end of the vertical partition wall 210 and the treated water 1 so as to be partially immersed in the treated water 1 and a remaining part thereof is located in the space 2, And a filter (300).

A drain port 101 for discharging the treated water is formed in the lower portion of the housing 100 and a supply port (not shown) for supplying the new treated water 1 is provided.

The vertical partition wall 210 has an inlet space 2a through which the contaminated air flows into the space 2 through the inlet 110 and a discharge space 2b through which the purified air is discharged through the outlet 120 ).

The vertical partition wall 210 has a lower end disposed in proximity to the rotary filter 300 to guide the outside air introduced into the housing 100 toward the rotary filter 300. The outlet 120 has a suction fan Not shown).

Horizontal partitions 220 are staggered in the inner wall of the housing 100 on the side of the discharge space 2b and the vertical partitions 210 so as to extend the discharge path of the purified air via the rotary filter 300, Residual dust contained in the air is adhered to the horizontal partition 220 to improve dust removal efficiency.

4, 5 and 7, the rotary filter 300 is formed in the shape of a cylinder in the form of a mesh-shaped adsorption net 335 on which the dust is adsorbed, and is disposed inside the adsorption net 335 at a predetermined interval A plurality of curtain members that are fixedly suspended at one end and are attracted to the dust particles; a plurality of curtain members fixed to the outer surface of the adsorption net 335 so as to be spaced apart from each other and to pierce the treated water 1 during rotation of the adsorption net 335, And a plurality of arc-shaped bucket members (400) for supplying to the outer surface of the net (335).

4, the rotary filter 300 includes a rotary shaft 310 rotatably driven by the rotational force of the motor, a plurality of first filters 310 radially and radially spaced apart from the rotary shaft 310, And a plurality of second filter frames 330 connecting the end portions of the plurality of first filter frames 320 in a polygonal manner and supporting the adsorption nets 335.

The adsorption net 335 may be formed of a mesh type metal or fiber material through which the treated water and the outside air pass.

A partition 410 and a concave channel groove 420 are formed at predetermined intervals in each of the cutouts 400 so that the treated water 1 can be uniformly distributed and supplied to the outer surface of the adsorption net 335 .

Particularly, the flow grooves 420 uniformly spread the process water in the longitudinal direction during the process of putting the process water on the outer surface of the adsorption net 335 during the rotation operation of the rotary filter 300, Thereby enabling a uniform oil film to be formed in the space between the upper and lower plates 300. That is, even if a slope is generated in the rotary filter 300 during the installation process, a uniform oil film can be formed in a space between the lower part of the vertical partition wall 210 and the rotary filter 300, Enabling the removal of dust from contaminated air.

5 and 6, the curtain member includes a fiber curtain 350A made of fiber yarn and a vinyl curtain 350B made of vinyl, and the fiber curtain 350A and the vinyl curtain 350B are attached to the adsorbing net (335).

The polluted air introduced through the inlet 110 passes through the adsorption net 335 wetted with the treatment water 1 and enters the adsorption net 335 to primarily adsorb the dust to the adsorption net 335, The air that has entered the adsorption net 335 is removed while dust is attached to the adsorbent 335 while contacting the surfaces of the vinyl curtain 350B and the fiber curtain 350A wetted with the treatment water 1, The dust is adhered to the adsorption net 335 and removed.

At this time, the air introduced into the adsorption net 335 is delayed by the fiber curtain 350A and the vinyl curtain 350B to be discharged outside the adsorption net 335, and the fiber curtain 350A and the vinyl curtain 350B The dust removal efficiency can be improved.

Since the adsorption net 335, the fiber curtain 350A, and the vinyl curtain 350B on which the dust is adsorbed are immersed in the treated water 1 while being washed, the dust is cleaned, so that the efficiency of removing dust from the inflowing polluted air can be improved Let's do it.

8, an extended partition wall 230 is formed extending from a lower end of the vertical partition wall 210. The extended partition wall 230 extends from the lower end of the vertical partition wall 210 to the inner wall of the inlet 110 And a second elongate partition wall 234 bent downward from the end of the first elongate partition wall 232 and surrounding a portion of the upper portion of the rotational filter 300 .

The contaminated air that has flowed into the inlet 110 due to the extended partition wall 230 passes between the water surface of the treated water 1 and the second extended partition 234 to pass through the rotary filter 300 Thereby guiding most of the inflowed polluted air to pass through the rotary filter 300, thereby improving dust removal efficiency.

In the embodiment of the present invention having the above-described structure, a part of the lower side of the rotary filter 300 is disposed so as to be submerged in the treated water filled in the lower side of the housing 100, and is rotated by driving the motor.

During the rotation of the rotary filter 300, the process water is soaked in the adsorption net 335, dust and odorous substances in the air passing through the adsorption net 335 of the rotary filter 300 are adsorbed, The air filtered by the vertical partition wall 210 and the horizontal partition 220 is discharged through the discharge port 120 after the flow direction is switched and the stagnation is delayed.

A plurality of bucket members 400 disposed on the outer side of the rotary filter 300 are disposed at the lower end of the vertical partition wall 210 and the rotary filter 300, So that dust and odor substances contained in the air flowing along the clearance space are adsorbed to the oil film and adsorption net 335, The adsorption performance can be improved.

The treated water sprayed toward the adsorption net 335 of the rotary filter 300 passes through the adsorption net 335 in the form of a net and drops to the lower side of the housing 100 while cleaning the adsorption net 335.

At this time, the partition 410 on the bucket member 400 prevents the treatment water flowing in the rotation direction of the rotary filter 300 from flowing in the longitudinal direction, so that an equal amount of treated water is sprayed every site, Since the plurality of flow grooves 420 are formed on the other side of the rotary filter 400, the process water is uniformly sprayed in the longitudinal direction of the rotary filter 300 to form the oil film, The filtering efficiency for filtration can be improved.

The fiber curtain 350A and the vinyl curtain 350B may be in close contact with the inner surface of the second filter frame 330 during rotation of the rotary filter 300, And functions to filter dust and odor substances contained in the air passing through the inside of the rotating filter 300 while being sagged inward.

Particularly, the fiber curtain 350A adsorbs and removes dust in the air, and the vinyl curtain 350B delays the time for the inflow air to be discharged to the outside of the adsorption net 335, The curtain 350A and the vinyl curtain 350B to improve dust removal efficiency.

In the embodiment of the present invention as described above, after a part of the lower side of the rotary filter is immersed in the treated water filled in the housing 100, the rotary filter is rotated to remove the adsorbed sludge dust and odorous substances in water And the rotating filter can be easily cleaned and the water is sprayed to the space between the rotary filter 300 and the vertical partition wall 210 to form an oil film so that the dust and odor substances in the air can be easily removed .

110: inlet 120: outlet
220: horizontal partition 230: extended partition
232: first extension partition 234: second extension partition
300: Rotary filter
310: rotating shaft 320: first filter frame
330: second filter frame 335: adsorption network
400: bucket member 410: partition
420: Euro home

Claims (2)

An apparatus for removing dust generated during treatment of sewage sludge in a drying apparatus,
An inlet 110 through which contaminated air including dust and odor flows in the drying device and an outlet 120 through which the filtered air is discharged to the outside is formed on one side of the drying device, (100) having a vertical partition (210) having a space (2) formed at an upper portion thereof and partitioning the inlet (110) and the outlet (120) and having a lower end spaced from an upper surface of the treated water;
The rotary filter 300 (hereinafter, referred to as " 300 ") is disposed between the lower end of the vertical partition wall 210 and the process water 1 so that a portion of the process water 1 is submerged and a remaining portion thereof is located in the space 2, ),
The vertical partition wall 210 has an inlet space 2a through which the contaminated air flows into the space 2 through the inlet 110 and a discharge space 2b through which the purified air is discharged through the outlet 120 ),
Horizontal partitions 220 are staggered in the inner wall of the housing 100 on the discharge space 2b side and the vertical partitions 210,
The rotating filter 300 is formed in a tubular shape with a mesh-shaped adsorption net 335 on which the dust is adsorbed. A plurality of the adsorption net 335, which is fixed at one end thereof at predetermined intervals, A curtain member of the adsorbing net 335 and a plurality of adsorbing nets 335 which are fixed to the outer surface of the adsorbing net 335 so as to be spaced apart from each other and feed the treated water during rotation of the adsorbing net 335 to the outer surface of the adsorbing net 335, And a plurality of bucket members (400) of an arc shape formed with the plurality of bucket members (410)
The curtain member includes a fiber curtain 350A made of fiber yarn and a vinyl curtain 350B made of vinyl and the fiber curtain 350A and the vinyl curtain 350B are alternately arranged inside the adsorption net 335 Lt; / RTI &
And an extended partition wall 230 extending from a lower end of the vertical partition 210,
The extension barrier 230 includes a first extension barrier 232 extending horizontally from the lower end of the vertical barrier 210 toward the inner wall of the inlet 110 and a second extension 232 extending from the end of the first extension barrier 232 And a second elongate partition wall 234 bent downwardly,
Wherein the air introduced into the inlet (110) is discharged to the outlet (120) via the adsorption net (335) and the curtain member. 2. The sewage sludge drying apparatus according to claim 1, wherein a plurality of concave channel grooves (420) for distributing treated water contained in each bucket member (400) and guiding the treated water to be supplied to the adsorption net (335) Dust removal device.

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