KR101220282B1 - aerobic garbage processing system - Google Patents

Abstract

The present invention relates to an organic waste treatment system for the combined treatment of organic waste such as sewage sludge and various functional sludge wastes and food waste generated in sewage pipes and sewage terminal treatment plants.
The present invention provides a sludge storage tank (2) having a sludge discharge structure, a supply pump (P) for supplying the sludge discharged from the sludge storage tank (2) to the drying apparatus 10, and supply through the supply pump (P) Drying apparatus 10 for drying and crushing the sludge, cooling device 3 for cooling the sludge dried and pulverized by the drying apparatus 10, and a dry sludge storage tank for storing the cooled sludge (4), a cyclone dust collector (5) for collecting dust using centrifugal force, a filtering dust collector (C) for collecting dust using a filtration filter, a sludge storage tank (2), and a drying device (10), a preheating device (H) for preheating the odor generated in the dust collector (C), and a dehumidifying device for removing moisture contained in the exhaust gas of the dry sludge storage tank (4) and the preheating device (H). (6) and purifying exhaust gas from which moisture was removed A scrubber 7 for cleaning, a biofilter 8 for secondary purification of the exhaust gas, and a wet scrubber for finally purifying the exhaust gas via the biofilter 8 to be discharged to the atmosphere ( 9) and the like.
The present invention can not only minimize the water content of the organic waste to be dried, but also minimize the volume of the organic waste to solve the leachate treatment problem, significantly reducing the cost of incineration, even if the organic waste is landfilled as leachate Minimize environmental pollution and solve the problem of limited landfill.

Description

Organic waste processing system

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an organic waste treatment system, and more particularly, to the combined treatment of organic waste such as sewage sludge and various functional sludge wastes and food waste generated in sewage pipes and sewage terminal treatment plants, and in particular, drying organic waste. At the same time, it is to provide an organic waste treatment system that can be crushed to increase the drying efficiency and to minimize the generation of odor and dust generated during the drying and crushing process of organic waste.

Sewage sludge generated in sewage terminal treatment plants and the like, and organic waste such as various functional sludges or food wastes are very difficult to treat, and conventionally, sludge has been treated using methods such as ocean dumping or incineration.

However, since the London Convention will strictly limit marine dumping of organic wastes from 2012, it is necessary to change the land treatment measures of organic wastes, and landfilling of organic wastes may be considered as one of the land treatment measures of organic wastes. In addition to this, not only problems with the volume (volume) and limited landfill sites, but also a large amount of leachate flow into the ground cause significant environmental pollution.

In addition, when treating organic wastes by incineration, which is one of land treatment measures, organic wastes such as sewage sludge and various functional sludges or food wastes contain a large amount of moisture (average moisture content of organic wastes of 80%). However, due to its large volume, the cost of incineration is considerable, and even incineration of organic waste inevitably causes a problem of treating a large amount of leachate, and more problematic is dioxin, which is fatal to the environment during incineration of organic waste. Of hazardous gases are generated in a large amount, which adversely affects the environment.

Accordingly, there is an urgent need for proper and efficient treatment of organic waste.

In order to efficiently treat organic wastes, drying equipment for drying organic wastes to lower the moisture content is devised and used. Conventional drying equipments are mainly used for drying organic wastes using combustion sources such as oil or gas. have.

The above-mentioned conventional drying equipment is a simple drying of organic wastes, and it is not possible to expect uniform and complete drying of agglomerated organic wastes, and it is not possible to drastically reduce the volume and water content of organic wastes due to incomplete drying. In addition, due to the large amount of odor and dust generated during the drying process of organic waste has been pointed out as a hate facility, the choice of a location for the construction of construction equipment is bound to be significantly limited.

As described above, the present invention was created to eliminate all the problems that occurred in the conventional organic waste treatment process, and simultaneously drying and crushing organic waste such as various sludge wastes containing a large amount of water and food waste. By improving the drying efficiency of organic wastes, the water content of organic wastes is dropped to 10% or less, so that the dried organic wastes can be recycled in various fields, and the volume and moisture content of organic wastes are minimized. By minimizing the cost of incineration or landfill, and by treating odors and dusts generated during the processing of organic wastes by themselves, the odors and dusts are prevented from leaking to the outside. Can be minimized So as focuses the technical problem to provide a finished organic waste treatment system.

The present invention for realizing the above-described technical problem, the sludge storage tank having a sludge discharge structure, the supply pump for supplying the sludge discharged from the sludge storage tank to the drying apparatus, and by drying and grinding the sludge supplied through the supply pump A drying device for giving, a cooling device for cooling the sludge dried and pulverized by the drying device, a dry sludge storage tank for storing the cooled sludge, a cyclone dust collector for collecting dust using centrifugal force, Filtering dust collector which collects dust using filtration filter, preheater for preheating odor generated from sludge storage tank, drying equipment, dust collector, moisture in exhaust gas of dry sludge storage tank and preheater Dehumidifier to remove water and purify exhaust gas And a cleaning apparatus, to a bio filter device intended to purify the exhaust gas secondary, constitutes an exhaust gas through a bio filter device such as the final purification by a wet scrubber to give to discharge into the atmosphere doeeojim a technical feature.

The organic waste treatment system proposed in the present invention is capable of combining and treating various organic wastes such as water-containing sludge wastes and food wastes. Drying can be used to recycle the dried organic waste in various fields (auxiliary fuel for thermal power plants), and to minimize the moisture content of the organic waste to be dried. It is possible to drastically reduce the cost of incineration while solving the problem of disposal, and to minimize the environmental pollution caused by leachate even when organic waste is landfilled, and to solve the problem of limited landfill.

In addition, the present invention by collecting the odor and dust generated during the supply, drying and crushing process of organic waste can be treated by itself to prevent damage to the neighboring area where the organic waste treatment system is constructed in advance. In this way, the present invention can minimize the constraints on the construction site, and thus the present invention is an invention in which the expected effect is really advantageous.

1 is a block diagram of an organic waste treatment system proposed in the present invention.
Figure 2 is a front view showing a preferred embodiment of the drying apparatus according to the present invention.
Figure 3 is a cross-sectional view showing the internal structure of the drying apparatus according to the present invention.
Figure 4 is a cross-sectional reference for explaining the installation state of the drying drum and the first and second shredding rotating pieces of the drying apparatus according to the present invention.
Figure 5 is a cross-sectional reference for explaining the operating state of the drying drum and the first and second shredding rotating pieces of the drying apparatus according to the present invention.
Figure 6 is a cross-sectional reference for explaining the installation state of the first opening and the first sealing member of the drying apparatus according to the present invention.
Figure 7 is a reference cross-sectional view for explaining the installation state of the second opening and the second sealing member of the drying apparatus according to the present invention.

1 shows a preferred embodiment of the organic waste treatment system 1 presented in the present invention, as shown in the present invention, a sludge storage tank 2 having a sludge discharge structure and a sludge storage tank 2 are discharged from the sludge storage tank 2. Supply pump (P) for supplying the sludge to the drying device 10, the drying device 10 for drying and grinding the sludge supplied through the supply pump (P), and drying by the drying device (10) And a cooling apparatus 3 for cooling the crushed sludge, a dry sludge storage tank 4 for storing the cooled sludge, a cyclone dust collector 5 for collecting dust using centrifugal force, and a filtration filter. Filtering dust collecting device (C) to collect the fine dust by using the, preheating device (H) and for preheating the odor generated in the sludge storage tank (2), drying device (10), dust collector (C) and Dry sludge storage The dehumidifying device 6 for removing moisture contained in the exhaust gas of the tank 4 and the preheater H, the washing device 7 for purifying the exhaust gas from which the moisture has been removed, and the exhaust gas It can be seen that it is composed of a bio-filtering device (8) for the secondary purification, and a wet scrubber (9) for final purification of the exhaust gas via the bio-filtering device (8) to be discharged to the atmosphere, Detailed implementation of the invention is as follows.

The discharge structure installed at the bottom of the sludge storage tank 2 is provided with a discharge screw in the upper inside of the discharge port provided at the bottom of the storage tank so that the sludge stored in the sludge storage tank 2 is discharged through the discharge port by driving the discharge screw. , The discharged sludge is directly supplied to the supply pump P by directly connecting the discharge port of the sludge storage tank and the supply pump P.

The sludge supply pump P is connected to the feed pipe P1 connected to the front end of the sludge supply pump P by the operation of the sludge supply pump P, and the sludge is supplied to the input hopper of the drying device 10. To (31).

A preferred embodiment of the drying apparatus 10 according to the invention is shown in FIG. 2 and a cross-sectional view showing the internal structure of the drying apparatus 10 according to the invention in FIGS. 3 to 4 is shown. The support base 12 maintains a predetermined distance to the base 11 to fix and install the front and rear sealing caps 13 and 14 corresponding to the support, and to dry between the front and rear sealing caps 13 and 14. A drive gear G1 which is rotatably installed in the drum 20 to install the rotation gear G2 on the outer circumferential surface of the drying drum 20, and is driven by the drive motor M1 installed on the base 11; The rotary gear G2 is engaged to allow the drying drum 20 to rotate by driving the driving motor M1.

At this time, the drying drum 20 is installed to be lowered toward the rear side so that the drying drum 20 maintains the inclination of 1.5 ° ~ 2 ° is preferably configured so that the sludge is dried to flow naturally to the rear, drying The reason for limiting the inclination of the drum 20 is that when the inclination is increased, unbalanced load is generated in the equipment, causing excessive force on the driving unit and the like, and the rotation of the drying drum 20 by the drum driving motor M1 is 2 per minute. Maintain the speed of rotation.

Two rotary shafts 27a and 27b having predetermined lengths are provided inside the front side of the drying drum 20, and a plurality of first and second shredding rotary pieces R1 and R2 are disposed on the respective rotary shafts 27a and 27b. Shafts, and each of the rotary shafts 27a and 27b is connected to the rotary shaft drive motors M2a and M2b with drive transmission means C1a and C1b such as chains and sprockets so that the rotary shafts 27a and 27b rotate. Attaching and installing a plurality of rows of transfer buckets 23 spirally wound on the inner wall surface of the drying drum 20, each of the transfer buckets 23 are cut at equal intervals, the transfer bucket 23 is a plurality of insertion plates are combined Take form.

At this time, the installation length of the first and second shredding rotary pieces R1 and R2 axially installed on the rotary shafts 27a and 27b does not exceed 1/3 of the total length of the drying drum 20, and the rotary shaft drive motor ( Rotation of the rotary shafts 27a and 27b by M2a and M2b enables high speed rotation of 350 RPM, and the driving direction of the rotary shafts 27a and 27b is opposite to the driving direction of the drying drum 20. Allow drive to take place.

A support roller 15a and a rotating plate 24 are installed on the outer wall of the drying drum 20 to support the side of the rotating supporting plate 24 on the base 11. The drying drum 20 is stably provided by installing the rotation support means 15 composed of the support rollers 15b for supporting the outer surface of the rotary support means 15 so as to firmly support the rotation support plate 24. To rotate.

Through holes 22 are formed inside the plurality of disc-shaped diaphragms 21 installed in the drying drum 20 to allow the inside of the drying drum 20 to pass through the through holes 22, and at the rearmost side thereof. The first opening 25 is formed in front of the diaphragm 21 to be positioned to provide a discharge member 26 having a plurality of fine discharge holes 26a in the first opening 25, and the first opening 25. The first sealing member 16 in the form of a ○ -ring is installed on the outside of the c) so that the first opening 25 is sealed by the first sealing member 16 and provided at the bottom of the first sealing member 16. The first discharge pipe 17 is installed in the first discharge port 16a, and the fine powder generated during the drying process of the organic waste is discharged into the fine discharge hole 26a → the first opening 25 → the first discharge port 16a → the first Allow discharge through the discharge pipe 17 (see FIG. 6).

A second opening 25a is formed at the rear of the diaphragm 21 located at the rearmost side of the drying drum 20, so that the second sealing member 18 having a ○ -ring shape is formed outside the second opening 25a. The second opening 25a is sealed by the second sealing member 18, and the second discharge pipe 19 is installed at the second discharge port 18a provided at the bottom of the second sealing member 18. The dried organic waste is discharged through the second opening 25a → the second discharge port 18a → the second discharge pipe 19, and to the third discharge port 18b provided at the upper portion of the second sealing member 18. An exhaust pipe 18c is installed to discharge dry gas (gas containing odor and heat) generated during drying of organic waste (see FIG. 7).

An auxiliary rotary shaft 28 having a predetermined length is provided inside the rear side of the drying drum 20 to axially install a plurality of auxiliary crushing rotary pieces R3 on the auxiliary rotary shaft 28, and then to rotate the auxiliary rotary shaft 28. The auxiliary rotation shaft 28 is rotated in association with the rotation shaft drive motor M4 and the drive transmission means C3 such as a chain and a sprocket, but the installation length of the auxiliary shredding rotation piece R3 is the length of the drying drum 20. Do not exceed 1/3.

A supply stand 30 having an input hopper 31 and an outlet opening 32 is installed in the front side sealing cap 13 so that the outlet opening 32 is located at the inner front end of the drying drum 20. The feed screw (S) is installed inside the feed table (30) to enable the input of a fixed quantity. The screw (S) is driven, and the burner 40 is installed on one side of the front sealing cap 13 so as to spray hot air into the drying drum 20.

   The sludge dried and crushed by the drying device 10 is directly connected to the first and second discharge pipes 17 and 19 of the drying device 10 by the transfer pipe P2 connected to the cooling device 3. 3) the sludge dry gas containing dust and odors is directly connected to the exhaust pipe P3 connected to the cyclone dust collector 5 by directing the exhaust pipe 18c of the drying apparatus 10 to the cyclone dust collector 5. Exhaust gas) to collect dust (sludge powder) contained in the sludge dry gas, and a cyclone dust collector (5) is installed below the cyclone dust collector (5) by installing an exhaust pipe (P4) directly connected to the transport pipe (P2). Dust collected by) is sent to the conveying pipe (P2) to be transported to the cooling device (3) with the dried and crushed sludge, and the cooling device (3) and dry sludge storage tank (4) to the conveying pipe (P8). Can be transferred to the dry sludge reservoir (4) for cooling. The.

The cyclone dust collector 5 and the filtering dust collector C are connected to the connecting pipe P6, and the dry gas collected by the cyclone dust collector 5 is sent to the filtering dust collector C to produce fine dust (sludge powder). The dust is collected by the filtering dust collecting device (C) by installing a discharge pipe (P5) directly connected to the conveying pipe (P2) to the dust collection to be made, and the filtering dust collecting device (C). Is sent to the chiller 3 together with the dried and crushed sludge.

By connecting the filtering dust collector (C) and the preheater (H) with a connecting pipe (P7) so that dry gas via the filtering dust collector (C) is supplied to the preheater (H), and the preheater (H) and The sludge storage tank 2 is connected to the connection pipe P11 so that the odor gas generated in the sludge storage tank 2 is supplied to the preheater H. The preheater H heats the supplied dry gas and the odor gas. It works to purify the odor.

The preheating device (H) and the dehumidifying device (6) by connecting the connecting pipe (P10) so that the dry gas and odor gas to be sent to the dehumidifying device (6), to the drying sludge storage tank (4) to the connecting pipe (P10) A direct discharge pipe (P9) is installed so that the dry gas in the sludge storage tank (4) is also sent to the dehumidifying apparatus (6), and the dehumidifying apparatus (6) operates to remove moisture contained in the dry gas and the odor gas. .

The dehumidifying device 6 and the cleaning device 7 are connected to the connection pipe P14 so that the dehumidified dry gas and the bad smell gas are supplied to the cleaning device 7 to purify the dry gas and the bad smell gas.

The cleaning device 7 and the biofiltering device 8 are connected by a connecting pipe P12 to biofilter dry gas and odor gas purified by the cleaning device 7, and the biofiltering device 8 and a wet scrubber. (9) is connected so as to connect the piping (13) to clean the dry gas and odor gas with chemicals and then discharge the clean purified gas to the atmosphere.

1: organic waste disposal system 2: sludge storage tank
3: cooling device 4: dry sludge storage tank
5: cyclone dust collector 6: dehumidifier
7: cleaning device 8: biofiltering device
9: wet scrubber 10: drying device
11: base 12: support
13: Front sealing cap 14: Rear sealing cap
15: rotation support means 16: the first sealing member
18: second sealing member 20: drying drum
21: disc plate 22: through hole
24: rotary support plate 25: first opening
26: discharge member

Claims (2)

A sludge storage tank 2 having a sludge discharge structure, a supply pump P for supplying the sludge discharged from the sludge storage tank 2 to the drying apparatus 10, and a sludge supplied through the supply pump P Drying apparatus 10 for drying and pulverizing, a cooling apparatus 3 for cooling the sludge dried and pulverized by the drying apparatus 10, and a dry sludge storage tank 4 for storing the cooled sludge. And a cyclone dust collector (5) for collecting dust using centrifugal force, a filtering dust collector (C) for collecting fine dust using a filtration filter, a sludge storage tank (2), and a drying device (10). ), A preheating device (H) for preheating the odor generated in the dust collector (C), and a dehumidification device for removing moisture contained in the exhaust gas of the dry sludge storage tank (4) and the preheater (H) (6 ) And purify the exhaust gas Cleaning device 7 for cleaning, biofiltering device 8 for secondary purification of exhaust gas, and wet scrubber for finally purifying exhaust gas via biofiltering device 8 to be discharged to the atmosphere ( An organic waste treatment system 10 consisting of 9);
The drying apparatus 10 is installed on the base 11 to support the support 12 to maintain a predetermined interval to fix and install the front and rear sealing caps 13 and 14 corresponding to the support, and the front and rear sealing cap ( 13, 14, the drying drum 20 is rotatably installed, the drying drum 20 is installed to be lowered toward the rear side so that the drying drum 20 to maintain the inclination of 1.5 ° ~ 2 °, drying drum The drying drum 20 is rotated and driven by linking the 20 and the drum driving motor M1 with the driving gear G1 and the rotating gear G2, and spirally wound around the inner wall of the drying drum 20. A plurality of rows of transfer buckets 23 are attached and installed, and each of the transfer buckets 23 is cut at equal intervals so that the transfer buckets 23 take a combination of a plurality of insert plates, and the front sealing cap 13 A supply stand 30 having an input hopper 31 and an outlet opening 32 is provided so that the outlet opening 32 is positioned at the inner end of the drying drum 20. In addition, the supply screw (S) and the supply motor (M3) installed in the supply table 30 is connected to the drive transmission means (C2) to drive the supply screw (S), one side of the front sealing cap (13) A burner 40 is installed in the drying drum 20 so as to spray hot air into the drying drum 20;
Two rotary shafts 27a and 27b are installed inside the front side of the drying drum 20 to axially install a plurality of first and second shredding rotary pieces R1 and R2 on the respective rotary shafts 27a and 27b. The rotary shafts 27a and 27b are rotated by linking the respective rotary shafts 27a and 27b and the rotary shaft drive motors M2a and M2b with the drive transmission means C1a and C1b;
The auxiliary rotary shaft 28 is installed inside the rear side of the drying drum 20 to axially install a plurality of auxiliary crushing rotary pieces R3 on the auxiliary rotary shaft 28, and the auxiliary rotary shaft 28 and the rotary shaft drive motor ( M4) is coupled to the drive transmission means C3 to allow the auxiliary rotation shaft 28 to rotate;
Through holes 22 are formed inside the plurality of disk-shaped diaphragms 21 installed in the drying drum 20 to allow the inside of the drying drum 20 to pass through the through holes 22, and at the rearmost side. The first opening 25 is formed in front of the diaphragm 21 to be positioned to install a discharge member 26 having a plurality of fine discharge holes 26a in the first opening 25, and the first opening 25. The first sealing member 16 in the form of a ○ -ring is installed outside of the c) so that the first opening 25 is sealed by the first sealing member 16 and provided at the bottom of the first sealing member 16. A first discharge pipe 17 is installed at the first discharge port 16a to discharge the fine waste powder generated during the drying of the organic waste;
The second opening 25a is formed at the rear of the diaphragm 21 located at the rearmost side of the disc diaphragm 21 installed in the drying drum 20 to form an o-ring outside the second opening 25a. The second sealing member 18 to seal the second opening 25a by the second sealing member 18, and to the second outlet 18a provided at the bottom of the second sealing member 18. The second discharge pipe 19 is installed so that the organic waste having been dried is discharged through the second discharge pipe 19, and the exhaust pipe 18c is disposed in the third discharge port 18b provided at the upper portion of the second sealing member 18. Organic waste treatment system, characterized in that configured to discharge the odor and heat generated during the drying process of organic waste by installing the. delete

Images