KR101597765B1 - Equipment for fermenting sewage sludge - Google Patents

Abstract

The present invention relates to a sewage sludge decomposing facility. According to the present invention, the sewage sludge decomposing facility comprises: a raw material storing hopper (100) temporarily storing sewage sludge after introducing the same from the outside and connected to a sludge transfer pump (110); a dryer (200) introducing the sewage sludge therein and equipped with an electric heating (210); a decomposition tank (300) supplied with the dried sewage sludge discharged from the dryer (200) and decomposing the introduced dried sewage sludge therein; a pulverizer (400) pulverizing the decomposed sewage sludge after supplying the same; a post aging tank (500) supplied with the pulverized and decomposed sewage sludge and heated air from the outside so as to stabilize the decomposed sewage sludge by aging the same; a pellet molder (600) molding the sewage sludge stabilized in the post aging tank (500) in a pellet form; and a returning hopper (700) selectively supplied with the sewage sludge discharged from the post aging tank (500) so as to store the same and supplying the stored decomposed sewage sludge to the dryer (200) so as to mix the same along with sewage sludge which is supplied from the raw material storing hopper (100) in the dryer (200). According to the present invention, it is possible to miniaturize the treatment facilities and to reduce time required for the sewage treatment.

Description

{Equipment for fermenting sewage sludge}

The present invention relates to a waste water sludge digestion facility.

Typically, the sewage sludge is mechanically dehydrated through a dehydrator after passing through a belt press or centrifuge and then containing about 25 to 30 weight percent of the dry matter.

The sludge cake having a water content of about 80% should be discharged, and the water content should be reduced in order to utilize the fuel as a fuel or as a soil or compost. However, there is an operational drawback in that a large amount of fuel must be used to regulate moisture through the dryer.

Then, in order to dry the final wet and viscous solid material to be baked and agglomerated with 90 wt% dry matter in the drier, the solid matter mass is pre-milled, mixed again with a large amount of dry dust, In order to overcome the adhesive phase and increase the dry matter content to about 60% by weight, it is in the form of granules.

Moreover, after the dried product is filtered, the final solid material is repeatedly stored in the middle and fed into the contact dryer or the convection dryer in the measured amount.

One drawback of this approach is that in addition to a much larger increase in the amount required by the device, the drying device connected to the outlet of the centrifuge is increased by almost three to five times compared to the centrifuged amount of the wet solid material The material must be processed.

This increases the structural size of the drying apparatus.

Another drawback is that as the amount of material increases, all moisture must be removed to a very low moisture level, thereby greatly reducing the drying rate.

As a method for solving such a problem, a sewage sludge is mixed with a sowing material of wood chips or a wood chip, and the mixture is stirred in a sewage sludge (Korean Patent Registration No. 10-0902743, Patent Document 1) Fermented by-products in a fermenter are put into the after-treatment tank, and then passed through a dryer and a molding machine.

Patent Document 1 is characterized in that sewage sludge before drying is mixed with by-products, pre-fermented, post-treated and dried.

However, since the by-products are mixed and fermented before the drying, the mixing and fermentation effects are significantly different depending on the characteristics of the contents of the sewage sludge, so that there is a problem that the quality of the product to be recycled can not be determined.

As another technique for solving such a problem, in a "fuel and composting apparatus for horizontal agitated shaft stock" (Korean Patent Registration No. 10-0893589, Patent Document 2), a horizontal fermenter is rotated about a central axis One configuration is disclosed.

The Patent Document 2 has an advantage that the power of the fermented product can be reduced by fermenting and naturally drying the fermented product in the fermentation tank.

However, Patent Document 2 also has a problem that since the drying is performed in a natural drying process and is performed simultaneously with the fermentation, the treatment rate per hour is remarkably lowered, and the facility is enlarged in size.

KR 10-0902743 (June 5, 2009) KR 10-0893589 (April 4, 2009)

The sewage sludge composting system of the present invention is to solve the problems caused by the conventional sewage sludge as described above. The sewage sludge is pre-dried using a drier to minimize its volume and then subjected to composting and post- So that it is possible to reduce the size of the processing facility.

In addition, it is intended to shorten the treatment time by drying the sewage sludge in advance, followed by composting and post-treatment.

In addition, 30% of the sewage sludge that has been post-treated using the transfer hopper is selectively recycled to the dryer, thereby improving the efficiency of the composting and post-treatment.

Particularly, the power used to start the electric heater to dry the sewage sludge is to heat the air discharged from the dryer through the heat exchanger with the outside air, thereby preventing wasting of external power and increasing energy efficiency.

In addition, the posterior chamber is formed by the dual structure of the upper compartment silo and the lower compartment silo, and the posterior compartment is formed into the double partition wall structure. In addition, the heat introduced by the operation of the heat retainer into the double partition wall structure is recompiled To supply energy to the inside of the silo so as to increase the energy efficiency in the post-sill process.

In addition, the deodorizer is configured to discharge the exhaust gas through a plurality of gas ejection openings formed on the surface of the gas ejection tube provided in the horizontal direction toward the center of the deodorization case to minimize the pressure of the exhaust gas rising vertically, And to increase the contact area between the chemical liquid and the exhaust gas so that the deodorization efficiency can be increased.

By comprehensively and thoroughly sowing and sowing the sewage sludge in a minimized volume through the drying, composting and post-sowing processes, the equipment size can be reduced, and the power required for drying, mating and deodorization can be improved through heat exchanger And to improve overall energy efficiency by operating efficiently.

The sewage sludge composting apparatus of the present invention is a sewage sludge composting facility for temporarily storing raw sewage sludge from outside and storing a raw material to which a sludge feeding pump (110) A hopper 100; A dryer 200 in which a predetermined amount of sewage sludge is introduced into the sludge transfer pump 110 and an electric heater 210 for heating the outside air to supply the inside thereof to the inside; A drying water sludge discharged from the dryer 200 is supplied to the interior of the drying tank 200 and is shaped into a horizontal cylindrical shape and is dried around the shaft center so that the dry sewage sludge introduced into the interior is in- Wow; A crusher 400 for receiving and crushing compost sewage sludge discharged from the compost tank 300; (500) which receives the pulverized coarse sewage sludge from the pulverizer (400), receives the heated air from the outside to stabilize and stabilize the coarse sewage sludge, and discharges the inner air to the atmosphere through a silo exhaust pipe (570) )Wow; A pellet molding machine 600 for molding the stabilized sewage sludge in the posterior tank 500 into a pellet form; The sewage sludge discharged from the after-treatment tank 500 is selectively supplied to and stored in the after-treatment tank 500. The outlet is connected to the dryer 200 by piping, 200 to be mixed with the sewage sludge supplied from the raw material storage hopper 100 in the dryer 200.

In this configuration, the outside air is introduced from one side of the upper part, and a compartmented outside air supply pipe 810 connected to the composting tank 300 connected to the lower side is connected to supply a part of the introduced outside air to the humidifying tank 300, And a dry air supply pipe 820 connected to the dryer 200 is connected to the other side of the lower portion and a part of the introduced air is supplied to the dryer 200. A dry air supply pipe 830 connected to the dryer 200 is connected to one side of the side A heat exchanger 800 for exchanging heat with exhaust gas exhausted from the dryer 200 and exchanging heat with outdoor air introduced into the interior of the dryer 200, and an exhaust pipe 840 connected to the other side of the exhaust heat exchanger 800 to heat- Is further provided.

In the aftermath tank 500, an inlet 511 through which the ground sewage sludge pulverized by the crusher 400 is formed, and an outlet 512 through which the sewage sludge processed in the bottom is discharged is formed at the upper portion A case 510 having a double wall structure in which wall surfaces are spaced from each other to form an air flow path 513; A mesh partition 520 installed in the middle of the case 510 and partitioning the inner space of the case by the upper compartment silo 521 and the lower compost silo 522; A silo stirrer 530 for stirring sewage sludge in the composting silo 521; A heater 540 for heating and supplying outside air to the air flow path of the case 510; One side of which is connected to the lower side air passage 513 of the inner silo 522 of the case and the other side of which is connected to the inner side of the compartment silo 521 connected to the blower 541, An upper air supply pipe 550 adapted to feed into the post-consumer silo 522; A lower air supply pipe 560 for supplying air to the inside of the inner-female silo 522 by receiving outside air; And a silo exhaust pipe 570 disposed on the upper side of the inner silo 521 and the inner silo 522 on one side for discharging air in the composting silo 521 and the inner silo 522 to the atmosphere.

The deodorizer 900 further includes a deodorizer 900 for deodorizing the exhaust gas exhausted from the exhaust pipe 840 and the exhaust gas exhausted from the silo exhaust pipe 570.

In addition, the deodorizer 900 has a water inlet 11 and a chemical inlet 12 formed on one side and the other side of the deodorizer 900, and stores the mixed chemical liquid into which water and chemicals are mixed, A chemical liquid auxiliary tank 10 to which a chemical liquid discharge pipe 13 through which the chemical liquid is discharged is connected; An inner wall 22 connected to an upper portion of the chemical auxiliary tank 10 and spaced apart from the outer wall 21 by a predetermined distance is formed to define a nozzle installation space 23 outside the inner wall 22, And a bottom plate 25 connecting the lower portion of the inner wall 22 and the outer wall 21 is formed in the inner side of the inner side of the inner wall 22 and communicated with the inside of the chemical auxiliary tank 10, (20); And the other side is connected to the chemical liquid supply orifice 31 flowing into the deodorization case 20 and the chemical liquid supply orifice 31 and the bottom plate The upper part of the temporary storage box 32 is connected to the bottom plate 25 and the upper part is formed in the nozzle installation space 23 in the vertical direction. A chemical solution discharge port 33a is formed and a plurality of spray nozzles 33 are installed on the bottom plate 25 and are arranged in a predetermined direction clockwise or counterclockwise on a plane 30); A gas inlet case 40 enclosing the outer wall 21 of the deodorization case 20 and having a gas inlet 41 through which exhaust gas is introduced at one side; A plurality of gas discharge openings 51 are formed in the surface of the deodorization case 20 and a plurality of nozzles are installed in the nozzle installation space 23 of the deodorization case 20 in a horizontal direction, And is disposed between upper and lower drug solution outlets 33a which are vertically stacked in the vertical direction and whose outer end is connected to the outer wall 21 to communicate with the gas inflow case 40 A gas injection tube 50 whose inner end is closed to the inner wall 22; A filler 61 is installed in a lower portion of the deodorization case 20 in communication with the deodorization case 20 and a gas exhaust port 62 through which gas introduced from a lower portion is formed is formed at an upper portion of the deodorization case 20 An upper case 60 which is provided with an upper case 60; A cleaning nozzle 71 installed at an upper portion of the filling material 61 in the upper case 60 and adapted to inject a chemical solution toward the lower filling material 61 and a cleaning nozzle 71 connected to one side of the cleaning nozzle 71 And a supply pipe 72 connected to the chemical auxiliary tank 10 and supplying the chemical solution stored in the chemical auxiliary tank 10 to the cleaning nozzle 71.

According to the present invention, the sewage sludge is pre-dried using a drier to minimize the volume thereof, followed by composting and post-treatment, whereby the capacity of the subsequent composting and post-treatment equipment can be reduced, and the processing facility can be miniaturized.

In addition, the sewage sludge is pre-dried and then subjected to composting and post-treatment so that the treatment time can be shortened.

In addition, the sewage sludge that has been post-treated by using the transfer hopper is selectively recycled to the dryer, whereby the efficiency of the composting and post-treatment can be further improved.

Particularly, the power used to start the electric heater to dry the sewage sludge is heat exchanged with the outside air through the heat exchanger through the heat exchanger to prevent waste of external power and increase energy efficiency.

In addition, the posterior chamber is formed by the dual structure of the upper compartment silo and the lower compartment silo, and the posterior compartment is formed into the double partition wall structure. In addition, the heat introduced by the operation of the heat retainer into the double partition wall structure is recompiled By feeding into the silo, it is possible to increase the energy efficiency in the post-sill process.

In addition, the deodorizer is configured to discharge the exhaust gas through a plurality of gas ejection openings formed on the surface of the gas ejection tube provided in the horizontal direction toward the center of the deodorization case to minimize the pressure of the exhaust gas rising vertically, So that the deodorization efficiency can be enhanced by making the deodorizer internal structure have a structure for increasing the contact area between the chemical liquid and the exhaust gas.

By comprehensively and thoroughly sowing and sowing the sewage sludge in a minimized volume through the drying, composting and post-sowing processes, the equipment size can be reduced, and the power required for drying, mating and deodorization can be improved through heat exchanger It is possible to increase the overall energy efficiency by operating efficiently.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a sewage sludge composting facility of the present invention. FIG.
FIG. 2 is a schematic view showing the structure of a posterior chamber in the present invention; FIG.
3 is a schematic view showing a front side and a corresponding plane of the multi-stage multi-stage deodorizer of the present invention.
4 is a schematic view showing a side surface and a corresponding plane of the multi-stage multi-stage deodorizer of the present invention.
FIG. 5 is a schematic view showing an arrangement state of an injection nozzle and a gas injection tube provided inside a deodorizing case in the present invention. FIG.
6 is a block diagram showing a moving state of a gas and a chemical liquid using the multi-stage deodorizing apparatus of the present invention.
7 is a partial cutaway exploded sectional view showing an embodiment in which a lid member is provided in the present invention.
8 is a photograph showing an arrangement state of the injection nozzle and the gas injection tube in the present invention.

Hereinafter, the sewage sludge composting apparatus of the present invention will be described in detail with reference to the accompanying drawings.

The sewage sludge composting facility of the present invention mainly comprises a raw material storage hopper 100, a drier 200, a humidifier 300, a crusher 400, a post mortem 500, a pellet forming machine 600, a transport hopper 700, And a heat exchanger 800 and a deodorizer 900 may be optionally included.

As shown in FIG. 1, the raw material storage hopper 100 includes a sludge transfer pump 110 connected to a screw pipe 120 for discharging sewage sludge temporarily from outside and temporarily storing sewage sludge stored in a lower portion thereof It is connected.

Accordingly, the supply of the sewage sludge to the dryer 200 is supplied in a quantified state so that the water content can be constantly induced through the control device such as the PCB not shown.

1, a dryer 200 is provided with an electric heater 210 for introducing a predetermined amount of sewage sludge into the interior of the dryer 200 by means of the sludge transfer pump 110, Air heated inside is supplied to dry the inside sewage sludge by warm air heating.

At this time, a cylindrical gear 220 or a drum is installed on the outer circumferential surface of the dryer 200, and an unillustrated gear or drum connected to the motor 230 is connected to a gear or a drum of the outer circumferential surface by a belt or a chain, It is preferable that the drum is composed of a rotary drum.

In addition, a screw 250 rotated by a motor 240 installed on the outside on a horizontal axis on the inside of the dryer 200 may be installed in the dryer 200, and may be moved to the outlet side along with stirring and drying.

That is, the sewage sludge is rapidly dried and stirred by rotation of the screw 250 inside the case and the outer case.

A drying exhaust pipe 830 is connected to an upper portion of the drying water discharge pipe 830 in the direction opposite to the direction in which sewage sludge is introduced, so that the exhaust gas in a heated state can be discharged to the outside.

The discharge of the dried sewage sludge in the dryer 200 can be done through a pneumatic conveyor operated by an external compressor.

In the submerged tank 300, the dried sewage sludge discharged from the dryer 200 is supplied to the inside, is formed in a cylindrical shape in the horizontal direction, and is rotated around the axis in the same manner as the dryer 200, And the dried sludge is dried in the inside.

At this time, a compost outdoor air supply pipe 810 and a compost exhaust pipe 320 may be provided so that outdoor air can be supplied to the interior and exhausted for composting.

At this time, the outside air supply may be such that the outside air heat-exchanged with the exhaust gas of the dryer 200 through the heat exchanger 800 may be introduced through the compartmented outside air supply pipe 810, and a blower 310 is installed in the middle of the pipe .

It is preferable that the exhaust pipe is connected to the deodorizer 900 so that the deodorization process is performed, and the exhaust fan 321 may be installed in the compost exhaust pipe 320.

The pulverizer 400 is connected to the discharge port side of the digester 300 to supply and crush coarse sewage sludge discharged from the digester 300, and a configuration of a pulverizer having a cutter in a known motor is applied .

A pneumatic conveyor connected to an external screw compressor may be installed at the bottom of the crusher 400 for conveying the coarse wastewater sludge which is pulverized and discharged.

The after-treatment tank 500 is supplied with the refined sewage sludge pulverized by the pulverizer 400, receives the heated air from the outside, stabilizes the compost sewage sludge, and the inner air is passed through the silo exhaust pipe 570 to the atmosphere .

The after-treatment tank 500 can be applied to a structure in which a simple stirrer is installed in a single cylindrical case, and a heating wire is provided on the inner wall surface.

However, it is preferable to have the structure as shown in FIG. 2 as a method for further increasing the energy efficiency and increasing the compost efficiency.

2 is an example in which the after-treatment tank 500 is composed of a case 510, a network partition 520, a heater 540, an upper air supply pipe 550, a lower air supply pipe 560 and a silo exhaust pipe 570 to be.

As shown schematically in the figure, the case 510 has an inlet 511 through which the ground sewage sludge pulverized by the crusher 400 is formed, and an outlet 512 through which the sewage sludge processed at the bottom is discharged And has a double wall structure in which wall surfaces are spaced apart from each other to form an air flow path 513.

The mesh partition 520 has a network structure and is installed in the middle of the case 510 to divide the space inside the case by the upper compartment silo 521 and the lower compost silo 522.

The silo stirrer 530 is configured to stir the sewage sludge in the composting silo 521 through a separate frame connected to the outside.

The heater 540 is adapted to receive ambient air from the outside and to supply the heated air to the air passage 513 of the case 510.

One side of the upper air supply pipe 550 is connected to the lower air passage 513 of the inner silo 522 of the case and the other side of the upper air supply pipe 550 is connected to the inner compartment silo 521, 513 to the inside of the post-sill silo 522.

The lower air supply pipe 560 is supplied with air and supplies air into the inner silting chamber 522.

One end of the silo exhaust pipe 570 is installed in the upper side of the composting silo 521 and the inner silo 522 to discharge the air inside the composting silo 521 and the inner silo 522 to the atmosphere.

In this configuration, the inner compartment silo 521 on the upper side is agitated by the silo stirrer 530 while the inner space of the case 510 is divided by the mesh partition 520, The air is heated to a temperature higher than that of the post-silo 522 to compensate for composting in the humidification tank 300. In this process, a trace amount of moisture falls due to gravity and further drying is performed. And is further removed.

A screw discharge unit is provided in the lower discharge port 512 of the post-consumer silo 522, and the post-sludge processed sludge is moved to the pellet molding machine 600 side.

The pellet molding machine 600 forms the stabilized sewage sludge in the posterior tank 500 into a pellet shape, and a known pelletizer may be applied.

In addition, the pellet molding machine 600 may be formed of a product in which known packaging is simultaneously performed, so that the molding and packaging may be performed continuously.

As shown in FIG. 1, the transfer hopper 700 is connected to the after-treatment tank 500 by piping, and selectively receives and stores the sewage sludge discharged from the after-treatment tank 500.

The discharge port of the transfer hopper 700 is piped to the dryer 200 to supply the stored compost sewage sludge to the dryer 200 so as to be mixed with the sewage sludge supplied from the raw material storage hopper 100 in the dryer 200 do.

The utilization of the transport hopper 700 can be utilized to further improve the composting of the newly introduced sewage sludge by in-situ treatment if the composting is not completed or by supplying the composted sludge again.

The heat exchanger 800 increases the energy efficiency by heating the air supplied to the dryer 200 and the composting furnace 300 using the energy utilized for drying.

Particularly, since the high temperature outside air is not needed in the humdrum tank 300, it is not necessary to provide a heater for heating the humidifier 300 itself by supplying the outside air through the heat exchanger 800.

As shown in the drawing, the heat exchanger 800 is configured such that the outside air is introduced from one side of the upper part, and the compartmented external air supply pipe 810 connected to the compost tank 300 is connected to the lower side of the heat exchanger 800, And a dry outside air supply pipe 820 connected to the dryer 200 is connected to the other side of the lower part so that a part of the introduced outside air is supplied to the dryer 200.

That is, the outside air is supplied through the heat exchanger 800 to the dryer 200 and the inner tank 300 in a heat-exchanged state.

At this time, it is apparent that a blower is installed in the dry outside air supply pipe 821.

In the heat exchanger 800, a dry exhaust pipe 830 connected to the dryer 200 is connected to one side of the heat exchanger 800 so that the exhaust gas exhausted from the dryer 200 flows into heat exchange with the outside air introduced into the heat exchanger 800.

At this time, a dust collector may be installed at one side of the duct of the dry exhaust pipe 830 to supply the exhaust gas to the heat exchanger 800 in a state where the dust is removed.

An exhaust pipe 840 is connected to the other side of the side of the heat exchanger 800 so that the heat-exchanged exhaust gas is supplied to the deodorizer 900 and discharged to the atmosphere.

The deodorizer 900 is configured to deodorize the exhaust gas exhausted from the exhaust pipe 840 and the exhaust gas exhausted from the silo exhaust pipe 570, and is separately connected to each of the drier, refinement tank, and aftertreatment tank.

However, in order to meet the object of the present invention, the exhaust gas discharged from the dryer 200 as shown in FIG. 1 and the exhaust gas The decompression tank 300, and the after-treatment tank 500, respectively.

The configuration of the deodorizer 900 for this purpose is shown in Figs.

The deodorizer 900 of FIGS. 3 to 8 is mainly composed of a chemical auxiliary tank 10, a deodorization case 20, a chemical liquid injector 30, a gas inflow case 40, a gas injection tube 50, an upper case 60 And a cleaning device 70, as shown in Fig.

As shown in FIGS. 3 and 4, the chemical auxiliary tank 10 is provided with a water inlet 11 and a chemical inlet 12 at one side and the other, respectively, so that water and chemicals are injected into the chemical solution auxiliary tank 10, Is stored.

The mixed chemical solution is preferably sodium hypochlorite solution (NaOCl).

In addition, a chemical liquid discharge pipe 13 is connected to discharge the mixed chemical liquid to one side of the side and supply the deodorized case 20.

As shown in the figure, the chemical liquid auxiliary tank 10 has one side protruded to the lower side of the deodorization case 20, and the water inlet 11, the medicine inlet 12 and the like are formed on the upper side, An inspection port 15 may be installed.

In addition, a sensor inlet 14 may be formed in the protruding portion as shown to allow the pH and level sensor to be installed therein.

6 shows a state in which the medicine supply port 12 is connected to the medicine storage tank 12a by piping so that the medicine is supplied and the medicine supply pump 12b and the flow meter 12c are provided on the channel, And a medicine is supplied in a constant amount.

In addition, a bypass pipe 11b is provided in the middle of the pipe connecting the water inlet 11 from the water supply source 11a, and a level sensor 11c is provided in the bypass pipe 11b to inject water in a predetermined amount can do.

In addition, the chemical liquid auxiliary tank 10 is configured to communicate with the deodorization case 20 with its top opened and in particular to communicate with the drainage space 24, which will be described later, so that the treated chemical liquid flows into the inside and is utilized for circulation desirable.

As shown in FIGS. 3 and 4, the deodorization case 20 is connected to the upper portion of the chemical auxiliary tank 10, and has an inner wall 22 spaced a certain distance from the outer wall 21 A nozzle installation space 23 outside the inner wall 22 and a drain space 24 inside the inner wall 22 are formed.

At this time, the drain space 24 communicates with the inside of the chemical auxiliary tank 10.

In addition, the deodorization case 20 is formed with a bottom plate 25 connecting the lower portion of the inner wall 22 and the outer wall 21. [

The nozzle installation space 23 is provided with a plurality of injection nozzles 33 and a gas injection tube 50 to be deodorized and a drain space 24 is formed in the nozzle installation space 23, The chemical solution that has passed through the inner wall 22 after the treatment in the chemical solution auxiliary tank 23 is discharged to the lower portion and is supplied to the chemical solution auxiliary tank 10 to serve as a passage for reuse.

In addition, the drainage space 24 serves as an obstacle to form a spiral vortex in the chemical liquid injected from the injection nozzle 33.

The chemical liquid injector 30 is constituted by a chemical liquid supply orifice 31, a temporary storage box 32 and a chemical liquid injector 30.

One end of the chemical liquid supply / drain pipe 31 is connected to the chemical liquid discharge pipe 13, the other side flows into the deodorization case 20, and the end side is divided into several branches.

In addition, a circulation pump 31a is provided in the pipeline so as to move the chemical liquid inside the chemical-liquid auxiliary tank 10 to the inside of the deodorization case 20. [

The temporary storage box 32 is connected to the chemical liquid supply orifice 31 as shown in FIG. 3, and the chemical liquid is introduced and temporarily stored. As shown in the plan view of FIG. 5, As shown in Fig.

As shown in FIGS. 3 and 4, the lower portion of the spray nozzle 33 is connected to the bottom plate 25, and the upper portion of the spray nozzle 33 is vertically formed into the nozzle installation space 23.

More specifically, a lower portion is connected to a position corresponding to the temporary storage box 32.

As shown in FIG. 5, a chemical solution discharge port 33a for discharging the chemical solution in the horizontal direction is formed, and a plurality of chemical solution discharge openings 33a are vertically spaced from each other on the pipeline .

5, the spray nozzles 33 are disposed concentrically with respect to the center of the deodorization case 20, and are installed in multiple locations inside and outside.

The drawing shows a state in which the deodorizing case 20 is double-positioned with respect to the center.

At this time, the chemical liquid discharge port 33a formed in each of the injection nozzles 33 is formed to be constant in the clockwise or counterclockwise direction as shown in FIG. 1, so that the chemical liquid discharged from each chemical liquid discharge port 33a is sprayed, Thereby forming a rotating vortex having a predetermined angle.

3 and 4, the gas inlet case 40 surrounds the outer wall 21 of the deodorization case 20. A gas inlet 41 through which the exhaust gas to be deodorized flows is formed is formed at one side of the gas inlet case 40 .

As shown in FIG. 6, the gas inlet 41 is connected to the deodorizing fan 16 by piping, and the odor gas, which is the exhaust gas that has been firstly deodorized in the deodorizing pan 16, flows into the gas inlet case 40 It is good to do.

At this time, the chemical liquid auxiliary tank 10 and the deodorizing pan 16 are provided with drain pipes 17 and 18, respectively, and they can be connected to each other and treated with wastewater.

In addition, the drainage can be made by the electric valve 17a installed in the pipe.

The gas injection tube 50 has an outer end connected to the outer wall 21 to communicate with the gas inlet case 40 and an inner end connected to the inner wall 22.

The gas injection tube 50 is provided with a plurality of gas discharge openings 51 on the surface thereof so that the odorous gas flows through the portion connected to the gas inflow case 40 and flows through the gas discharge opening 51 into the nozzle installation space 23 Lt; / RTI >

The gas injection pipe 50 is installed in the nozzle installation space 23 in the horizontal direction from the outer wall 21 toward the center of the deodorization case 20 as shown in the photographs of FIGS. 3, 4 and 8.

These gas injection pipes 50 are installed so as to be spaced apart from each other in the horizontal direction and the vertical direction, and the above-described injection nozzle 33 is located between the two gas injection pipes 50 on the plane as shown in Fig. 5 .

Although the injection nozzle 33 is provided between the two gas injection pipes 50 in the figure, the injection nozzle 33 may be provided between each gas injection pipe 50, As shown in the photograph of FIG. 5A, the injection nozzles 33 may be disposed between the gas spraying pipes 50 of more than two.

That is, the injection nozzle 33 is located in a space between the gas injection pipes 50 spaced from each other.

As shown in FIGS. 3 and 4, between the upper and lower gas injection pipes 50, the chemical liquid discharge port 33a of the injection nozzle 33 is provided between the gas injection pipes 50, which are vertically adjacent to each other, Respectively.

That is, a chemical solution is supplied to the upper and lower portions of the malodor gas injected from the gas injection tube 50 when viewed from the side, and the chemical solution is supplied in the form of a vortex on the side of the gas injection tube 50 Structure.

Although these arrangements do not form a vortex, they are sprayed from the spray nozzle 33 disposed therebetween and come into contact with a chemical liquid which forms a horizontal rotating vortex in the nozzle installation space 23 A vortex flow is formed, and contact is increased.

Particularly, the chemical solution is injected from the chemical solution outlet 33a, which forms a multi-stage in the vertical direction, so that a vortex is formed which rotates while the chemical solution forms a plurality of layers vertically. The malodor gas is dispersed and discharged between the respective layers, The contact area and the contact time are increased.

Although the gas injection pipes 50 may be fixed to the outer wall 21 and the inner wall 22 by welding at both ends thereof, the gas injection pipes 50 may have a bracket 52 The inner wall of the outer wall 21 is provided with a tapered tube 53 having a tapered shape gradually passing through the outer circumferential surface and decreasing gradually inwardly and having an open end, The taper pipe 53 is inserted into the opened end portion of the capillary tube 50 and the closed end portion is fitted in the groove of the bracket 52 so that the replacement and maintenance of the gas piping tube 50 It is preferable to make it easy.

In this case, if the malodorous gas contains foreign matter, the filtering action to be filtered by the gas discharge port 51 is performed, and if the gas discharge port 51 is clogged, it can be easily taken out and replaced or repaired.

The upper case 60 is installed on the deodorization case 20 in communication with the deodorization case 20 as shown in the figure and the filling material 61 is installed on the lower part. A gas outlet 62 is formed.

The cleaning device 70 includes a cleaning nozzle 71 disposed above the filler material 61 in the upper case 60 and configured to inject a chemical solution toward the lower filler material 61, And a supply pipe 72 connected to the chemical auxiliary tank 10 to supply the chemical solution stored in the chemical auxiliary tank 10 to the cleaning nozzle 71.

At this time, it is preferable that the supply pipe 72 is branched into a plurality of branches in the upper case 60.

The circulation pump 31a is also installed in the supply pipe 72 so that the chemical solution stored in the chemical solution auxiliary tank 10 flows into the supply pipe 72.

In the drawing, it can be seen that the supply pipe 72 and the chemical liquid supply orifice 31 are connected to each other and a valve (not shown) is provided at the connection point.

The valve may be constituted by a flow control valve, a solenoid valve, or the like, and may be configured to control the amount of the chemical liquid sent to each of the valves, or selectively open and close the valve.

A mesh network 63 is provided at the bottom of the filler material 61 at the lower part of the upper case 60. The mesh network 63 is blocked at a portion corresponding to the drainage space 24 on a plane A portion 63a can be formed.

When the clogged portion 63a is formed, the chemical liquid that has passed through the filler 61 after being sprayed from the cleaning nozzle 71 is discharged from the upper portion of the nozzle installation space 63 outside the drainage space 24 by the clogged portion 63a And drops into the nozzle installation space 63. In this process, the user comes into contact again with the chemical solution, thereby doubling the deodorizing effect.

In addition, in the above-described configuration, as shown in FIGS. 3, 4 and 7, the deodorization case 20 is surrounded by the bolts or the like around the inner wall 22, A clamp 80 for forming the clamping member 81 may be further provided.

This clamp 80 selectively increases the volume of the nozzle installation space 23 by raising the boundary between the nozzle installation space 23 and the drainage space 24 and facilitates installation of the additional gas injection tube 50.

In addition, it is possible to selectively adjust the level of the chemical solution staying in the nozzle installation space 23, thereby improving the treatment efficiency.

7, a lower protrusion 26 protruding downward from the bottom plate 25 is formed in the lower portion of the inner wall 22, and an outer circumferential surface of the protrusion 26 is connected to the lower protrusion 26 And the lower end of the sidewall surface 91 is connected to the upper protruding portion 28 and the lower protruding portion 28 so as to form an upward protruding portion 28 upwardly protruding from the inner circumferential surface of the auxiliary bottom portion 27, And a lid member 90 which is seated on the auxiliary bottom 27 between the side wall surfaces 91 and 91 and on which a conical inclined portion 92 is formed.

This lid member 90 prevents the malodor gas flowing into the nozzle installation space 23 from flowing into the lower liquid medicine auxiliary tank 10 through the drainage space 24, The auxiliary bottom 27 is formed with a plurality of auxiliary drain holes 27a.

Alternatively, instead of forming the auxiliary drain hole 27a, the lid member 90 is formed of a material that can be raised by the buoyant force so as to rise according to the level of the chemical liquid, and the chemical liquid rides on the upward projecting portion 28, And the malodor can not be introduced.

In the deodorizer 900 constructed as described above, when the chemical solution, which is a mixture of chemicals and water, is stored in the chemical auxiliary tank 10, the odor gas passing through the deodorant pan 16 of FIG. 5 flows into the gas inflow case 40 And then flows into the nozzle installation space 23 through the gas injection pipe 50, which is connected to the outer wall of the deodorization case 20 in a large number.

At this time, by the operation of the circulation pump 31a, the chemical liquid flows into the plurality of injection nozzles 33 vertically arranged in the nozzle installation space 23 and is injected through the chemical liquid discharge port 33a.

In addition, the chemical liquid gas is sprayed around the gas injection tube 50 through the gas discharge port 51 on the surface of the gas injection tube 50 arranged in the horizontal direction.

At this time, the chemical liquid forms vortexes that horizontally rotate in a predetermined direction in the nozzle installation space 23 in the dewatering case 20 when viewed in a plan view, and a plurality of chemical solution outlets 33a are disposed A plurality of vortexes are formed in the vertical direction.

Since the gas injection pipe 50 for discharging odorous gas in this process is located between the injection nozzles 33 on the plane and is sprayed between the upper and lower liquid discharge openings 33a on the side face, As a standard, the chemical liquid is supplied to the upper and lower sides on the side surface to make contact.

In addition, since the chemical liquid forms a rotating vortex on the plane, the smell gas injected around the gas injection tube 50 is also sufficiently brought into contact with the side of the odor gas due to the influence of the rotating vortex.

In particular, since the malodor gas injected from the gas injection pipe 50 at the lowermost end is in contact with the chemical liquid of the rotating vortex formed in the course of ascending, the contact time and the contact area are increased.

Axis direction including the gas discharge port 51. In the process of spraying, the pressure to vertically rise is less received, and the time for contact with the chemical solution is increased.

In addition, since the injection nozzles 33 and the gas injection pipes 50 themselves, which are installed in the deodorization case 20, act as an obstacle while the rotating vortices are formed, The dispersion of the gas can be activated and the treatment efficiency can be improved.

The odor gas passing through the deodorization case 20 passes through the filler material layer 60 while moving upwards. At this time, the chemical liquid is injected downward through the washing nozzle 71 and the odor gas passes through the pores of the filler material 60 The contact area is further enlarged by contact with the chemical liquid, thereby improving the deodorization efficiency.

In addition, the chemical liquid injected through the cleaning nozzle 71 drops again into the nozzle installation space 23, so that the chemical solution and the odor gas come into contact again in the nozzle installation space 23. [

The chemical liquid dropped into the nozzle installation space 23 gradually rises in the nozzle installation space 23 and flows over the upper end of the inner wall 22 to flow into the drainage space 24 and then flows into the chemical solution auxiliary tank 10, It is possible to maximize utilization of the chemical solution while minimizing waste and generation of waste water.

Of course, the pH change of the chemical solution due to the circulation system is checked through the inserted pH sensor, and the chemical solution is further supplied.

The chemical solution stored in the chemical auxiliary tank 10 is supplied to the deodorizing case 20 and the upper cleaning device 70 to clean and deodorize the odor and then return to the drainage space 24 of the deodorization case 20, The malodorous gas is collected through the deodorizing pan 16 and flows into the gas inflow case 40 and then is washed in the deodorization case 20 by the chemical liquid And is exhausted through the gas outlet 62 of the upper case 60 after being deodorized.

In the composting process using the sewage sludge composting facility of the present invention as described above, the sewage sludge is pre-dried by using the dryer 200 described above to minimize the volume, and then subjected to composting and post- It is possible to make the processing facility small, and the processing time is shortened.

In addition, the sewage sludge that has been post-treated by using the transfer hopper is selectively recycled to the dryer, whereby the efficiency of the composting and post-treatment can be further improved.

Particularly, the power used to start the electric heater to dry the sewage sludge is heat exchanged with the outside air through the heat exchanger through the heat exchanger to prevent waste of external power and increase energy efficiency.

In addition, the posterior chamber is formed by the dual structure of the upper compartment silo and the lower compartment silo, and the posterior compartment is formed into the double partition wall structure. In addition, the heat introduced by the operation of the heat retainer into the double partition wall structure is recompiled By feeding into the silo, it is possible to increase the energy efficiency in the post-sill process.

In addition, the deodorizer is configured to discharge the exhaust gas through a plurality of gas ejection openings formed on the surface of the gas ejection tube provided in the horizontal direction toward the center of the deodorization case to minimize the pressure of the exhaust gas rising vertically, So that the deodorization efficiency can be enhanced by making the deodorizer internal structure have a structure for increasing the contact area between the chemical liquid and the exhaust gas.

By comprehensively and thoroughly sowing and sowing the sewage sludge in a minimized volume through the drying, composting and post-sowing processes, the equipment size can be reduced, and the power required for drying, mating and deodorization can be improved through heat exchanger It will be able to operate efficiently and increase the overall energy efficiency.

10: chemical auxiliary tank 11: water inlet
11a: water supply source 11b: bypass pipe
11c: level sensor 12: medicine inlet
12a: medicine storage tank 12b: medicine supply pump
12c: Flow meter 12d: Bypass tube
13: Chemical liquid discharge pipe 14: Sensor inlet
15: check port 16: deodorizing fan
17, 18: drain pipe 17a: electric valve
20: deodorization case 21: outer wall
22: inner wall 23: nozzle installation space
24: drain space 25: bottom plate
26: lower protrusion 27: auxiliary bottom
27a: auxiliary drain hole 28: upward protrusion
30: chemical liquid injection device 31: chemical liquid supply source engine
31a: circulation pump 32: temporary storage
33: injection nozzle 33a: chemical solution outlet
40: gas inlet case 41: gas inlet
50: gas injection pipe 51: gas discharge port
52: Bracket 53: Taper pipe
60: upper case 61: filler
62: gas outlet 63: mesh net
63a: clogged portion 70: cleaning device
71: cleaning nozzle 72: supply pipe
80: clamp 81: secondary inner wall
90: lid member 91: side wall surface
92:
100: raw material storage hopper 110: sludge transfer pump
200: dryer 210: electric heater
300: compost tank 310: blower
320: Compressed exhaust pipe 321: Exhaust fan
400: Grinder 500:
510: Case 520: Reticle partition
530: Silo stirrer 540: Insulating heater
550: Upper air supply pipe 560: Lower air supply pipe
570: Silo exhaust pipe 600: Pellet molding machine
700: convey hopper 800: heat exchanger
810: Domestic outside air supply pipe 820: Dry outside air supply pipe
830: Dry exhaust pipe 840: Exhaust pipe
900: Deodorizer

Claims (5)

delete delete In sewage sludge composting equipment,
A raw material storage hopper 100 connected to a sludge transfer pump 110 for discharging sewage sludge from the outside and temporarily storing the sewage sludge stored in a lower portion;
A dryer 200 in which a predetermined amount of sewage sludge is introduced into the sludge transfer pump 110 and an electric heater 210 for heating the outside air to supply the inside thereof to the inside;
A drying water sludge discharged from the dryer 200 is supplied to the interior of the drying tank 200 and is shaped into a horizontal cylindrical shape and is dried around the shaft center so that the dry sewage sludge introduced into the interior is in- Wow;
A crusher 400 for receiving and crushing compost sewage sludge discharged from the compost tank 300;
(500) which receives the pulverized coarse sewage sludge from the pulverizer (400), receives the heated air from the outside to stabilize and stabilize the coarse sewage sludge, and discharges the inner air to the atmosphere through a silo exhaust pipe (570) )Wow;
A pellet molding machine 600 for molding the stabilized sewage sludge in the posterior tank 500 into a pellet form;
The sewage sludge discharged from the after-treatment tank 500 is selectively supplied to and stored in the after-treatment tank 500. The outlet is connected to the dryer 200 by piping, 200 to be mixed with the sewage sludge supplied from the raw material storage hopper 100 in the dryer 200,
In the after-treatment tank 500,
An inlet port 511 through which the ground sewage sludge pulverized by the crusher 400 is formed in the upper part and an outlet port 512 through which the sewage sludge processed in the lower part is discharged is formed, A case 510 made of a double wall structure for forming a plurality of projections 513;
A mesh partition 520 installed in the middle of the case 510 and partitioning the inner space of the case by the upper compartment silo 521 and the lower compost silo 522;
A silo stirrer 530 for stirring sewage sludge in the composting silo 521;
A heater 540 for heating and supplying outside air to the air flow path of the case 510;
One side of which is connected to the lower side air passage 513 of the inner silo 522 of the case and the other side of which is connected to the inner side of the compartment silo 521 connected to the blower 541, An upper air supply pipe 550 adapted to feed into the post-consumer silo 522;
A lower air supply pipe 560 for supplying air to the inside of the inner-female silo 522 by receiving outside air;
And a silo exhaust pipe (570) installed on the upper side of the inner silo (521) and the inner silo (522) to discharge atmospheric air inside the inner silo (521) and the inner silo (522).
Sewage sludge composting facility. delete delete

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