KR200364729Y1 - Sewage and wastewater and water supply and drainage sludge cake drier using microwave - Google Patents

Abstract

The present invention reduces the sludge cake cost by reducing the sludge cake by reducing the water by rapidly stirring and drying the moisture contained in the sludge cake generated during the treatment of wastewater and water and sewage, by microwave and hot air in the hopper, and by recycling the sludge cake. Its purpose is to provide wastewater and water and sewage sludge cake drying equipment using microwaves that contribute to environmentally friendly preservation policies.

Waste water and water and sewage sludge cake drying apparatus using a microwave according to the present invention for achieving the above object is a belt conveyor for horizontally moving the dewatered sludge cake in the dehydrator; A large-capacity hopper provided with a first drying means and a first stirring means so as to store the sludge cake supplied by the belt conveyor therein and to be evaporated and dried by microwaves and hot air while stirring the sludge cake; A blower, an electric heater, and a motor connected to the large-capacity hopper by a pipe are sequentially connected to each other, and the sludge cake introduced into the large-capacity hopper is stirred and dried.

Therefore, the wastewater and water and sewage sludge cake drying apparatus using microwave according to the present invention can increase the drying of the sludge cake to the maximum since the drying and sterilization of the sludge cake is performed in a short time by using the dielectric heating of the microwave, the boiler There is no need, it is easy to operate by using only a small amount of electricity, there is an excellent advantage of excellent durability by using only electricity.

Description

Wastewater and water supply and drainage sludge cake drier using microwave

The present invention relates to a wastewater and sewage sludge cake drying apparatus using microwave, and in particular, the microwave which allows the sludge cake containing a large amount of water dehydrated in the dehydrator to be dried quickly by microwaves and hot air in the hopper. The present invention relates to wastewater and sewage sludge cake drying apparatus used.

As is well known, as one of the recent environmental regulations by international conventions, regulations such as prohibition of dumping of marine sludges and direct landfilling have been strengthened, and countermeasures have not been suggested.

In particular, as the number of new sewage treatment plants, a representative water pollution prevention facility, is increasing year by year, the pollution caused by untreated water quality is greatly reduced, whereas the amount of sludge generated during sewage and waste water treatment increases rapidly. Is emerging as a new problem.

Up to now, it is not only the main cause of secondary environmental pollution by transporting various water sludges, but also causing a widespread and rapid pollution of the marine environment or soil and groundwater pollution. Securing is an additional problem.

In addition, since the sludge in the sewage treatment plant contains a large amount of polymer flocculant, the existing dehydration method can not greatly increase the sludge reduction effect, and the incineration treatment is high in equipment and operating costs, and there is a fear of secondary pollution such as air pollution. There is also.

Accordingly, in order to solve the problems as described above, a multi-stage sludge drying apparatus using microwave application No. 2002-26007 has been proposed.

Looking at the technical configuration "In constructing a multi-stage sludge drying apparatus using the microwave according to the present invention, the sludge is supplied to the sludge drying apparatus main body 10 by a quantitative supply through a crusher in a storage tank, the sludge is sludge It is supplied into the drying apparatus main body through the inlet (11), descends to the bottom end by the sludge conveying conveyor (16) and then discharged to the sludge residue discharging outlet (12) by the dry residue discharging conveyor (17), the drying apparatus main body (10) In the upper one side of the exhaust gas outlet 13 is installed, the exhaust gas is discharged through the exhaust gas outlet 13, passes through a special ceramic filter, and then discharged to the atmosphere through the deodorization and dust collector, the drying device On the side, a microwave generator 14, such as a magnetron, is installed, and a microphone for guiding microwaves generated from the magnetron into the drying apparatus. The wave guide 14-1 is installed, and a microwave dispersion fan 15 is installed inside the drying apparatus, and microwaves are uniformly dispersed in the drying apparatus through the microwave dispersion fan 15 to be transported through the sludge conveying conveyor 16. It is possible to increase the drying efficiency of the sludge, and the inner wall of the drying apparatus is configured to increase the reflection efficiency of the microwave as much as possible by treating with metal.

The multi-stage sludge drying apparatus using the conventional microwave having the configuration as described above does not uniformly dry during drying by the microwave while the sludge is transported through the sludge conveying conveyor, and only the portions irradiated with the microwaves on the left and right sides are dried. There exists a problem that the nonuniformity of drying which arises arises.

Thus, the present invention was devised to solve the problems as described above, by quickly stirring and drying the moisture contained in the sludge cake generated during wastewater and water and sewage treatment by microwaves and hot air to reduce the function of the sludge cake Its purpose is to provide wastewater and water and sewage sludge cake drying equipment using microwaves to reduce sludge treatment costs through reduction and contribute to environmentally-friendly preservation policy by recycling sludge cake.

1 is a view showing a multi-stage sludge drying apparatus using a conventional microwave

Structural Diagram,

2 is a process chart showing a process for purifying sewage in a sewage treatment plant,

3 is a wastewater and water and sewage sludge using microwaves according to the present invention

Schematic diagram showing a cake drying device,

4 is a wastewater and water and sewage sludge using microwaves according to the present invention

Plan view showing a large capacity hopper of the cake drying machine,

5 is a wastewater and water and sewage sludge using a microwave according to the present invention

Front view showing the inside of the large capacity hopper of the cake drying machine,

6 is an enlarged detail view of portion A of FIG. 5;

7 is a wastewater and water and sewage sludge using microwaves according to the present invention

Side view showing the inside of the large capacity hopper of the cake drying device,

8 is a wastewater and water and sewage sludge using microwaves according to the present invention

Side view showing a blower of a cake drying machine,

9 is wastewater and water and sewage sludge using microwaves according to the present invention

The state where the small capacity hopper is installed in the large capacity hopper of the cake dryer

Floor plan,

10 is a wastewater and water and sewage sludge using microwaves according to the present invention

The state where the small capacity hopper is installed in the large capacity hopper of the cake dryer

Front View,

11 is a wastewater and water and sewage sludge using microwaves according to the present invention

The state where the small capacity hopper is installed in the large capacity hopper of the cake dryer

Side view.

Explanation of symbols on the main parts of the drawing

10: dehydrator 12: sludge cake

14 Belt Conveyor 16 Large Capacity Hopper

18: piping 20: blower

22: electric heater 24: motor

26: microwave generator 28: agitator wings

30: stirrer shaft 32: stirrer

34: bearing housing 36: chain

38: sprocket 40: geared motor

42: deodorization and steam exhaust device 44: small capacity hopper

46: microwave generator 48: agitator

50: stirrer shaft 52: stirrer

54: bearing housing 56: chain

58: sprocket 60: geared motor

62: gate 64: gate

Waste water and water and sewage sludge cake drying apparatus using a microwave according to the present invention for achieving the above object is a belt conveyor for horizontally moving the dewatered sludge cake in the dehydrator; A large-capacity hopper provided with a first drying means and a first stirring means so as to store the sludge cake supplied by the belt conveyor therein and to be evaporated and dried by microwaves and hot air while stirring the sludge cake; A blower, an electric heater, and a motor connected to the large-capacity hopper by a pipe are sequentially connected to each other, and the sludge cake introduced into the large-capacity hopper is stirred and dried.

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

Figure 2 is a process chart showing a process for purifying sewage in the sewage treatment plant, Figure 3 is a block diagram showing the wastewater and water and sewage sludge cake drying apparatus using the microwave according to the present invention, Figure 4 is a microwave according to the present invention 5 is a plan view showing a large capacity hopper of the waste water and sewage sludge cake drying apparatus used, Figure 5 is a front view showing the inside of a large capacity hopper of waste water and water and sewage sludge cake drying apparatus using a microwave according to the present invention, Figure 6 Part A enlarged detail view, Figure 7 is a side view showing the inside of a large capacity hopper of the wastewater and water and sewage sludge cake drying apparatus using microwave according to the present invention, Figure 8 is a wastewater and water and sewage sludge cake drying using microwave according to the present invention Side view showing the blower of the apparatus.

As shown in these drawings, the wastewater sludge cake drying apparatus using the microwave according to the present invention includes a belt conveyor 14 for horizontally moving the sludge cake 12 dehydrated in the dehydrator 10; A large-capacity hopper 16 provided with a first drying means and a first stirring means for storing the sludge cake 12 supplied by the belt conveyor 14 and being evaporated and dried by microwaves and hot air while being stored therein; The blower 20, the electric heater 22, and the motor 24, which are connected to the large-capacity hopper 16 by a pipe 18, are sequentially coupled to the sludge cake 12 introduced into the large-capacity hopper 16. It is characterized by stirring and drying.

Here, the first drying means is provided with a microwave generator 26 over the inner circumferential surface of the large-capacity hopper 16, so that the sludge cake 12 is dried by the microwaves generated by the microwave generator 26. Structure.

In addition, the first stirring means is fixedly installed on the left and right sides of the stirrer 32 and the stirrer 32 formed of the stirrer blade 28 and the stirrer shaft 30 for stirring the sludge cake 12 introduced into the hopper 16. A sprocket 38 having a bearing housing 34 supporting the stirrer shaft 30 and one side of the bearing housing 34 fixed thereto, and a chain 36 wound around the stirrer 32; It is composed of a geared motor 40 for driving the sprocket 38, the sludge cake 12 is stirred by the rotation of the stirrer blades 28 of the stirrer 32.

On the other hand, the large-capacity hopper 16 has a deodorization and steam exhaust device 42 is fixed to the upper portion, the heating steam and smell generated while the sludge cake 12 stored in the large-capacity hopper 16 is dried Configured to be removed.

That is, the wastewater sludge cake drying apparatus using the microwave according to the present invention is characterized by the technical idea that stirring and drying the sludge cake by microwaves and hot air.

Here, the microwave uses thermal energy by dielectric heating and refers to electromagnetic waves in a very short region having a wavelength of 10 cm to 1 m and a frequency of 30 MHz to 300 GHz, and is used for heating and drying for industrial purposes as well as for communication.

In particular, the microwave sludge cake drying is a drying method using microwave heating, the water molecules in the sludge cake is subjected to the rotational motion of 2.25 billion molecular orientations per second when the microwave is irradiated to the sludge cake In this case, friction heat between molecules is generated, which is a method of drying and sterilizing the sludge cake using this heat energy.

In addition, due to the microwave sludge cake drying and sterilization it is possible to sterilize E. coli, mold, pathogenic bacteria and the like in the sludge cake.

Therefore, the sludge cake drying by the microwave as described above has the advantage that the time required for drying and sterilization is shortened from only 30 seconds to about 1 minute because the microwave rapidly heats the inside and outside of the sludge cake at the same time.

Wastewater sludge cake drying apparatus using microwave according to the present invention made of a configuration as described above dewatering sludge cake (12) containing a large amount of water generated in the process of treating domestic sewage or manure, livestock wastewater, factory wastewater Discharged through the (10), the sludge cake 12 is transported horizontally through a plurality of belt conveyor 14, is introduced into the large capacity hopper (16).

The sludge cake 12 introduced into the large-capacity hopper 16 is stirred and dried by microwave drying and agitation by the microwave generator 26 and the stirrer 32 in the large-capacity hopper 16, so that the sludge cake 12 is fast and It can be effectively stirred uniformly and dried.

At this time, the microwave is generated by the microwave generator 26 installed in the large-capacity hopper 16 to primarily dry the sludge cake 12.

On the other hand, the sludge cake 12 is stirred by the stirrer 32 at the same time as the microwave drying by the microwave generator 26,

That is, the sludge cake 12 introduced into the stirrer 32 installed in the large-capacity hopper 16 operates the geared motor 40 installed on one side, and the stirrer 32 installed in the bearing housing 34 is rotated. The microwave is heated and dried by the microwave generator 26 installed on the inner circumferential surface of the large-capacity hopper 16 while the stirrer 30 mounted on the 32 rotates. Let's do it.

Here, as the stirrer blades 28 of the stirrer 32 are rotated by the driving force of the geared motor 40, the sludge cake 12 rotates along the outer circumferential surface of the stirrer blades 28 of the stirrer 32. Completely dry with residence time.

On the other hand, when the temperature of the heat drying by the microwave generator 26 is low as described above, by blowing the hot air into the large-capacity hopper 16 by the blower 20 using an electric heater 22 installed separately, a large-capacity hopper Increase the temperature in (16) so that the heating and drying is carried out while maintaining the proper temperature.

In particular, the water content is lowered to 75% or less by the stirrer 32 and the microwave generator 26 in the large-capacity hopper 16, and the sludge cake 12 having such low water content is the gate 62 of the large capacity hopper 16. After discharging to the outside and transported to the landfill in a state loaded on the van so that the sludge cake 12 can be buried.

Hereinafter, the present invention will be described in more detail with reference to various embodiments.

9 is a plan view showing a state in which a small capacity hopper is installed in a large capacity hopper of the wastewater and water and sewage sludge cake drying apparatus using the microwave according to the present invention, Figure 10 is a wastewater and water and sewage sludge cake drying apparatus using the microwave according to the present invention 11 is a front view showing a state in which a small capacity hopper is installed in a large capacity hopper, and FIG. 11 is a side view showing a state in which a small capacity hopper is installed in a large capacity hopper of wastewater and water and sewage sludge cake drying apparatus using microwaves according to the present invention.

As shown in these drawings, the wastewater sludge cake drying apparatus using the microwave according to the present invention includes a belt conveyor 14 for horizontally moving the sludge cake 12 dehydrated in the dehydrator 10; A large-capacity hopper 16 provided with a first drying means and a first stirring means for storing the sludge cake 12 supplied by the belt conveyor 14 and being evaporated and dried by microwaves and hot air while being stored therein; The blower 20, the electric heater 22, and the motor 24, which are connected to the large-capacity hopper 16 by a pipe 18, are sequentially coupled to the sludge cake 12 introduced into the large-capacity hopper 16. In the structure in which stirring and drying are carried out, the same is true of the technical idea of the present invention.

However, in the embodiment of the present invention, a plurality of sludge cakes 12 supplied by the belt conveyor 14 are stored in the inside of the large-capacity hopper 16 at a predetermined position and stored and stirred therein by microwaves. A small capacity hopper 44 is provided with a second drying means and a second stirring means to evaporate to dry.

Here, the second drying means is provided with a microwave generator 46 over the inner circumferential surface of the small-capacity hopper 44, the sludge cake 12 is dried by the microwaves generated by the microwave generator 46.

In addition, the second stirring means includes a stirrer (52) consisting of a stirrer blade (48) and a stirrer shaft (50) for stirring the sludge cake (12) introduced into the small capacity hopper (44); It is fixed to the left and right sides of the stirrer 52, the bearing housing 54 for supporting the stirrer shaft 50 and the fixed housing is installed on one side of the bearing housing 54, the chain 56 for rotating the stirrer 52 The wound sprocket 58; The sludge cake 12 is agitated by the geared motor 60 for driving the sprocket 58 and rotating the stirrer blade 48 of the stirrer 52.

That is, in the wastewater sludge cake drying apparatus using the microwave according to the present invention, a plurality of small capacity hoppers 44 are installed in the large capacity hopper 16, and the microwave generator 46 and the stirrer 52 are installed in the small capacity hopper 44. Is an organically bonded structure.

Wastewater sludge cake drying apparatus using the microwave according to the present invention having the configuration as described above is the sludge cake 12 into any one small capacity hopper 44 installed in the large capacity hopper 16 by the belt conveyor (14) The conveyed sludge cake 12 is introduced, and at this time, the sludge cake 12 is agitated and dried by microwave drying and stirring by the microwave generator 46 and the stirrer 52 in the small-capacity hopper 44. 12) can be dried quickly and effectively uniformly stirring.

As such, the dried sludge cake 12 opens the gate 64 of the small capacity hopper 44 and discharges it into the large capacity hopper 16 and at the same time the other side of the small capacity hopper 44. The sludge cake 12 is introduced separately from the small-capacity hopper 44 so that microwave heating and drying by the microwave generator 46 and stirring by the stirrer 52 are performed.

That is, since the small capacity hopper 44 is formed in plural, the sludge cake is discharged into the large capacity hopper 16 after the microwave heating and drying by the microwave generator 46 is finished in the first small capacity hopper 44. In the second small capacity hopper 44, heating drying and stirring by the microwave generator 46 and the stirrer 52 are performed, and in the third small capacity hopper 44, the belt conveyor 14 By doing so, a series of processes into which the sludge cake 12 is introduced is sequentially performed.

Here, the small capacity hopper 44 is dried and stirred by the sludge cake 12 by the stirrer 52 at the same time as the microwave drying by the microwave generator 46,

That is, the sludge cake 12 introduced into the stirrer 52 installed in the small capacity hopper 44 operates the geared motor 60 installed on one side, and the stirrer 52 installed in the bearing housing 54 is rotated. The microwaves heat the sludge cake 12 by the microwave generator 46 installed on the inner circumferential surface of the small capacity hopper 44 while the stirrer blade 48 mounted on the 52 rotates. Allow to dry.

Here, as the stirrer blade 48 of the stirrer 52 is rotated by the driving force of the geared motor 60, the sludge cake 12 is rotated along the outer circumferential surface of the stirrer blade 48 of the stirrer 52. Completely dry with residence time.

In this way, the sludge cake 12, which has been dried and stirred by microwaves by the microwave generator 46 and the stirrer 52 in the small capacity hopper 44, is opened and closed by the gate 64 of the small capacity hopper 44. Is discharged into the large-capacity hopper 16 by

The sludge cake 12 introduced into the large-capacity hopper 16 is properly agitated by the stirrer 32 installed in the large-capacity hopper 16, and at the same time, hot air of the electric heater 22 transferred by the blower 20 is transferred to the large-sized hopper ( 16) Blow into to allow stirring and hot air drying.

Here, in the above embodiment, the present invention implements the present invention by installing the microwave generator 46 only in the small-capacity hopper 44, but if necessary, the microwaves in the large-capacity hopper 16 and the small-capacity hopper 44 It is to be noted that microwave heating and drying may be performed by installing the generators 26 and 46 together, and it may be optionally installed in any one of the large capacity hopper 16 or the small capacity hopper 44 as necessary. .

Meanwhile, as described above, the sludge cake 12 subjected to heat drying and stirring by the microwave generator 46 and the stirrer 52 through the small capacity hopper 44 is again heated in the large capacity hopper 16 by the electric heater 22. By the hot air drying and stirring by the stirrer 32, the sludge cake 12 lowers the water content of the sludge cake 12 determined by the waste management method to 75% or less, so that the water content of the sludge cake 12 is lowered After the discharge to the outside through the gate 62 of the large-capacity hopper 16, it can be transported to a landfill in the state loaded on the van.

As described above, the wastewater and water and sewage sludge cake drying apparatus using the microwave according to the present invention has the following effects.

First, the present invention uses microwave dielectric heating, so that the sludge cake can be dried and sterilized continuously in a short time, thereby increasing the drying of the sludge cake to the maximum, and the boiler is not needed. It is simple and has excellent advantages of excellent durability by using only electricity.

Second, the present invention has the advantage of shortening the drying time by using the microwave and hot air at the same time as the sludge cake drying means.

Third, the present invention is to install a small capacity hopper in a large capacity hopper to heat the drying and stirring of the sludge cake through a small capacity hopper, hot air drying and stirring in the large capacity hopper again, the water content of the sludge cake is greatly reduced There is an advantage.

Fourth, the present invention is a leachate due to the decrease in the water content of the landfill sludge cake, the amount of sludge cake is reduced during ocean dumping, the landfill cover, quarry mine landfill, coating packaging materials due to the decrease in water content of the sludge cake It has the advantage of contributing to environmental policy by recycling it.

Fifth, the present invention reduces the landfill transportation costs and disposal costs due to the reduction of the landfill sludge cake and the reduction of the amount of sludge cake during ocean dumping, there is an economic advantage of reducing the cost of the ED during drying.

Sixth, the present invention has the advantage that can be processed by dispersing the sludge cake of large capacity in succession using a plurality of small capacity hopper.

Claims (7)

A belt conveyor 14 for horizontally moving the sludge cake 12 dehydrated in the dehydrator 10; A large-capacity hopper 16 provided with a first drying means and a first stirring means for storing the sludge cake 12 supplied by the belt conveyor 14 and being evaporated and dried by microwaves and hot air while being stored therein; The blower 20, the electric heater 22 and the motor 24 are sequentially coupled to the large-capacity hopper 16 by a pipe 18, Wastewater sludge cake drying apparatus using microwaves, characterized in that the sludge cake (12) introduced into the large-capacity hopper (16) is stirred and dried. The method of claim 1, The first drying means is provided with a microwave generator 26 over the inner circumferential surface of the large-capacity hopper 16, Wastewater sludge cake drying apparatus using microwaves, characterized in that the sludge cake (12) by the microwave generated by the microwave generator 26 is dried. The method of claim 1, The first stirring means includes a stirrer (32) comprising a stirrer blade (28) and a stirrer shaft (30) for stirring the sludge cake (12) introduced into the hopper (16); It is fixed to the left and right sides of the stirrer 32, the bearing housing 34 for supporting the stirrer shaft 30 and fixed to one side of the bearing housing 34, the chain 36 for rotating the stirrer 32 The wound sprocket 38; Is composed of a geared motor 40 for driving the sprocket 38, Wastewater sludge cake drying apparatus using microwaves, characterized in that the sludge cake 12 is stirred by rotating the stirrer blades (28) of the stirrer (32). The method of claim 1, The large-capacity hopper 16 has a deodorization and steam exhaust device 42 is fixed to the upper portion, so that the heated steam and odor generated by drying the sludge cake 12 stored inside the large-capacity hopper 16 is removed. Wastewater sludge cake drying device using a microwave, characterized in that configured. The method of claim 1, Second drying means such that a plurality of sludge cakes 12 supplied by the belt conveyor 14 are evaporated and dried by microwaves while being stored and stirred in the inside of the large-capacity hopper 16 at a predetermined position. Waste water sludge cake drying device using a microwave, characterized in that consisting of a small capacity hopper 44 is provided with a second stirring means. The method of claim 5, The second drying means is provided with a microwave generator 46 over the inner peripheral surface of the small capacity hopper 44, Wastewater sludge cake drying apparatus using microwaves, characterized in that the sludge cake (12) is dried by the microwaves generated by the microwave generator (46). The method of claim 5, The second stirring means includes a stirrer (52) comprising a stirrer blade (48) and a stirrer shaft (50) for stirring the sludge cake (12) introduced into the small capacity hopper (44); It is fixed to the left and right sides of the stirrer 52, the bearing housing 54 for supporting the stirrer shaft 50 and the fixed housing is installed on one side of the bearing housing 54, the chain 56 for rotating the stirrer 52 The wound sprocket 58; Is composed of a geared motor 60 for driving the sprocket 58, Wastewater sludge cake drying apparatus using microwaves, characterized in that the sludge cake (12) is stirred by rotating the stirrer blade (48) of the stirrer (52).