KR20200001898A - sludge treatment apparatus using ultrasonic wave - Google Patents

Abstract

The sludge treatment apparatus using ultrasonic waves according to the present invention includes: a body connected to a sludge storage tank so that sludge is introduced therein, the body being installed higher than the sludge storage tank by a support frame; It is rotatably provided inside the body to allow the sludge inside the body to be stirred or agitated, and different dual-frequency ultrasonic waves are transmitted to the sludge inside the body to cross each other in the interior of the body to Dual frequency ultrasonic stirring unit solubilizing the sludge by ultrasonic vibration of a dual frequency irradiated with each other; A stirring drive unit connected to the dual frequency ultrasonic stirring unit to provide a rotational driving force to rotate the dual frequency ultrasonic stirring unit; And a stirring transmission unit provided between the dual frequency ultrasonic stirring unit and the stirring driving unit, the stirring transmission unit having a center frame to transfer the rotational driving force provided by the stirring driving unit to the dual frequency ultrasonic stirring unit. .
As a result, in the anaerobic digestion process in which energy consumption is reduced, the hydraulic retention time can be shortened, the digestion efficiency can be improved, and the sludge treatment apparatus using ultrasonic waves that can minimize sludge waste can be provided. .

Description

Sludge treatment apparatus using ultrasonic wave

The present invention relates to a sludge treatment apparatus using ultrasonic waves, and more particularly, to a sludge treatment apparatus using ultrasonic waves to solubilize organic waste such as food waste and sewage sludge for aerobic or anaerobic digestion process.

In general, organic wastes such as sewage sludge, livestock manure, food waste and organic municipal solid wastes contain high concentrations of pollutants and are considered the main sources of water pollution. The treatment of these organic wastes is landfilling, fertilization and incineration. It has been treated by ocean dumping, etc. In recent years, the most representative treatment method has been the ocean dumping method.

However, due to the lack of landfills and the possibility of water inflow from secondary pollutants, negative recognition of organic landfills has been prevalent, and most of the activated sludge methods have been aerobic, which has been banned since 2012 under the London Convention. It is processed by an anaerobic digestion process. In this activated sludge process, biodegradable organic matter is converted to carbon dioxide, which is an inorganic material, and removed. However, some of the biodegradable organic matter is converted into surplus microorganisms by microbial growth and accumulated in the form of sludge.

Among the activated sludge methods, aerobic processes, which are biological treatment methods, such as biooxidation, composting, liquefaction, and feed conversion, consume a lot of energy, and the final by-product compost and liquid consumption are difficult to secure, and feed is limited to excessive energy use. There was a problem.

An example of such a sludge treatment apparatus is disclosed in Korean Patent Registration No. 0165169 (registered on September 16, 1998, hereinafter referred to as 'Patent Document 1').

In order to solve the problem of the sludge treatment method by the activated sludge process according to the prior art, a sludge treatment apparatus using an anaerobic digestion process is used, but in relation to the treatment and disposal of sludge, excess sludge does not occur rapidly due to anaerobic digestion. There is a problem that the above hydraulic retention time (HRT) is required, and dehydration is not easy after the anaerobic digestion of sludge, this problem is because most of the sludge is composed of organic microbial mass This is because the cellular wall blocks the transport of intracellular organic matter to the anaerobic digestive matrix. In other words, due to the cell wall, which is a rigid structure surrounding the cells, the cytoplasm composed of a large amount of organic material cannot be used for anaerobic digestion, and thus shows low digestion efficiency in anaerobic digestion of sludge.

Korean Patent Registration No. 0165169 (Registered Sep. 16, 1998)

It is an object of the present invention, in the anaerobic digestion process to reduce energy consumption can be shortened hydraulic retention time, can improve the digestion efficiency, to provide a sludge treatment apparatus using ultrasonic waves that can minimize the sludge waste. It is.

In addition, the dual frequency ultrasonic vibration is actually applied without problems during the ultrasonic pretreatment process and to provide a sludge treatment apparatus using ultrasonic waves that can effectively differentiate the sewage sludge through the dual frequency ultrasonic vibration.

 In addition, it is to provide a sludge treatment apparatus using ultrasonic waves that can increase the production of high-quality biogas through the middle temperature anaerobic digester, and also improve the performance of the digester.

Sludge treatment apparatus using the ultrasonic wave according to the present invention to achieve the above object is connected to the sludge storage tank is provided with a sludge to be introduced therein, the body is installed higher than the sludge storage tank by a support frame; It is rotatably provided inside the body to allow the sludge inside the body to be stirred or agitated, and different dual-frequency ultrasonic waves are transferred to the sludge inside the body to cross each other in the interior of the body to Dual frequency ultrasonic stirring unit solubilizing the sludge by ultrasonic vibration of a dual frequency irradiated with each other; A stirring drive unit connected to the dual frequency ultrasonic stirring unit to provide a rotational driving force to rotate the dual frequency ultrasonic stirring unit; And a stirring transmission unit provided between the dual frequency ultrasonic stirring unit and the stirring driving unit, the stirring transmission unit having a center frame to transfer the rotation driving force provided by the stirring driving unit to the dual frequency ultrasonic stirring unit. .

Here, the dual frequency ultrasonic stirring unit, a pair of first vibration cassette provided to be mutually oriented with the center frame therebetween, and provided to cross with respect to the first vibration cassette on the basis of the center frame and the center A pair of second vibrating cassettes provided to be mutually oriented with a frame interposed therebetween, a plurality of first ultrasonic vibrators installed on a front surface of the first vibrating cassette to generate ultrasonic frequency vibrations of 25 to 30 kHz, and the first It is preferred to include a plurality of second ultrasonic vibrators provided on the front of the second vibration cassette to generate ultrasonic frequency vibrations of 35 to 45 kHz.

The stirring transmission unit includes two pairs of cassette wiring stirring frames arranged to cross each other with respect to one pair so as to be connected to an upper portion of each of the first vibration cassette and the second vibration cassette and the center frame. Inside the stirring frame, wires connected to the first ultrasonic vibrator and the second ultrasonic vibrator are preferably wired to be sealed from the outside.

The sludge treatment apparatus using ultrasonic waves according to the present invention further includes an ultrasonic vibration unit connected to the first ultrasonic vibrator and the second ultrasonic vibrator of the dual frequency ultrasonic stirring unit by the wire to adjust the vibration frequency and the output of ultrasonic waves. It is desirable to.

And, the vibration output of the dual frequency ultrasonic stirring unit is preferably 9400 ~ 9800 W.

According to the present invention, in the anaerobic digestion process in which energy consumption is reduced, hydraulic retention time can be shortened, digestion efficiency can be improved, and sludge treatment apparatus using ultrasonic waves can minimize sludge waste. Can be.

In addition, by allowing the dual frequency ultrasonic cross-irradiation, the dual frequency ultrasonic vibration is actually applied without any problem during the ultrasonic pretreatment process and provides a sludge treatment apparatus using ultrasonic waves that can effectively differentiate the sewage sludge through the dual frequency ultrasonic vibration. can do.

In addition, it is possible to provide a sludge treatment apparatus using ultrasonic waves that can increase the production of high-quality biogas through the middle temperature anaerobic digester, and also improve the performance of the digester.

1 is an overall appearance of the sludge treatment apparatus using ultrasonic waves according to the present invention,
Figure 2 is a side configuration view as viewed from the side of the internal configuration of the sludge treatment apparatus using the ultrasonic wave of Figure 1,
3 is a plan view showing the internal configuration of the sludge treatment apparatus using the ultrasonic wave of FIG.
4 is a plan view of the sludge treatment apparatus using the ultrasonic wave of FIG.
5 is a graph showing the change in soluble chemical oxygen demand (SCOD) according to the ultrasonic and irradiation density of the dual frequency by the sludge treatment apparatus using ultrasonic waves according to the present invention,
6 is a plan view showing the inside of the sludge treatment apparatus using ultrasonic waves according to another embodiment of the present invention from above;
7 is a plan view showing the internal configuration of the sludge treatment apparatus using ultrasonic waves according to another embodiment of the present invention from above,
8 is a side configuration view of an internal configuration of an apparatus for treating sludge using ultrasonic waves according to another embodiment of the present invention;
FIG. 9 is a control block diagram of the sludge treating apparatus using the ultrasonic wave of FIG. 8.

According to the present invention, microorganisms constituting sludge upon treatment of organic waste such as sewage sludge, livestock manure, food waste and organic municipal solid waste, that is, sludge (hereinafter referred to as 'sludge') are biodegraded because they are surrounded by solid cell walls. Sludge treatment system considering the characteristics of sludge because it has low properties, high content of bound water such as intracellular water and gap water, and high hydrophilicity, so that dehydration and solid-liquid separation are not easy. The present invention relates to a sludge treatment apparatus using ultrasonic waves used in a pretreatment process configured at the tip of a.

In connection with the above, the purpose of the sludge pretreatment is to increase the biodegradability of the sludge by destroying the cell wall to promote hydrolysis of the cellular components. That is, the sludge treatment apparatus using the ultrasonic wave of the present invention, that is, the ultrasonic treatment tank (hereinafter, referred to as the "ultrasound treatment tank") has the advantage of not generating a harmful substance to the environment during the treatment process, the capacity change of the ultrasonic treatment tank It is easy to add and change the ultrasonic vibrator flexibly according to the characteristics of the ultrasonic treatment tank flexibly, and the ultrasonic vibrator is installed inside the ultrasonic treatment tank so that the noise is low because it is located in the liquid phase, and the ultrasonic vibrator is stirred and rotated by the sludge. Since it is guided around the ultrasonic wave has an advantage that can evenly and efficiently irradiate the sludge.

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

Sludge treatment apparatus using the ultrasonic wave according to the present invention, as shown in Figures 1 to 3, is connected to the sludge storage tank 1 is provided so that the sludge 10 is introduced into the sludge by the support frame (3) The body 100 installed higher than the reservoir 1 and rotatably provided in the body 100 allow the sludge 10 inside the body 100 to be stirred or stopped and different dual frequency ultrasonic waves are applied to the body ( Dual frequency ultrasonic stirring unit so as to be delivered to the sludge 10 inside the body 100 to cross each other in the interior so as to solubilize the sludge 10 inside the body 100 to the cross-irradiated ultrasonic vibration of the dual frequency. (200), the stirring drive unit 300 is connected to the dual frequency ultrasonic stirring unit 200 to provide a rotational driving force for rotating the dual frequency ultrasonic stirring unit 200, and the dual frequency ultrasonic stirring unit 200 And it is provided between the stirring drive unit 300 includes a stirring transmission unit 400 having a center frame 410 to transmit the rotational driving force provided by the stirring drive unit 300 to the dual frequency ultrasonic stirring unit 200.

Accordingly, in the anaerobic digestion process in which energy consumption is reduced, hydraulic retention time can be shortened, digestion efficiency can be improved, and sludge waste can be minimized.

1 and 2, as shown in Figure 1 and 2, the sludge 10 is provided to be connected to the sludge storage tank 1 so that the sludge 10 is introduced into the sludge storage tank 1, the sludge 10, When the inlet pipe 110 and the discharge pipe 120 for discharging the solubilized concentrated sludge and the sludge 10 exceeds the maximum water level, the recovery pipe 130 for recovering the sludge 10 to the sludge storage tank (1) It is configured to include, the inlet pipe 110 and the recovery pipe 130 is connected to the sludge storage tank 1, the discharge pipe 120 is connected to the digester (not shown), the sludge 10 is moved.

At this time, the body 100 is located at a certain height by the support frame 3, the discharge pipe 120 is installed in the lower portion of the body 100, the concentrated concentrated sludge is naturally discharged or recovered to the sludge storage tank (1) To be possible.

As shown in Figure 2, the inlet pipe 110 of the body 100 according to the present invention is formed in the inside of the portion connected to the 'b' shaped bent sludge 10 is introduced through the inlet pipe 110. When the inflow to the inside of the body 100, it is preferred that the inlet guide bracket 111 is installed to prevent contamination by splashing to another part.

In addition, as shown in Figures 1 and 2, the recovery tube 130 is ultrasonically efficiently by the first ultrasonic vibrator 211 and the second ultrasonic vibrator 221 to be described later of the dual-frequency ultrasonic stirring unit 200. When the sludge 10 is introduced or the sludge 10 is expanded above the maximum water level determined by the first ultrasonic vibrator 211 and the second ultrasonic vibrator 221, the recovery pipe ( The sludge 10 is moved back to the sludge reservoir 1 through 130.

In addition, the body 100 of the present invention, as shown in Figure 4, is configured to further include a cover 140 that can be opened and closed on the inside of the ultrasonic treatment tank, that is, used during maintenance of the interior of the body 100 do. In addition, as shown in Figure 2, the lower outer side of the body 100 is provided with a drain valve 150 to allow the internal sludge 10 to be discharged to the outside during maintenance of the body 100.

On the other hand, as shown in Figure 1, the sludge storage tank 1 is provided with a sludge supply pump 2 so that the sludge 10 stored therein can be supplied to the body 100 through the inlet pipe 110, As shown in FIG. 2, the water level of the sludge 10 introduced into the body 100 exceeds the maximum water level or the water level of the sludge 10 expanded inside the body 100 exceeds the maximum water level. The maximum water level sensor 160 is provided so as to detect whether or not the sludge 10 has exceeded the maximum water level through the maximum water level sensor 160. 10 is controlled to return back to the sludge reservoir (1) through the recovery pipe (130).

The digester connected to the discharge pipe 120 of the body 100 according to the present invention is preferably a medium temperature anaerobic digester.

On the other hand, as shown in Figure 2, the cover 140 of the body 100 includes a plurality of brackets to support the stirring drive unit 300 and the stirring control unit 401 to be described later of the stirring transmission unit 400 It is preferable that the installation support 145 is provided.

2 and 3, the dual frequency ultrasonic stirring unit 200 is a pair of first vibration cassettes provided to be spaced apart and oriented from each other with the center frame 410 interposed therebetween. (210) and a pair provided to intersect with respect to the first vibration cassette 210 with respect to the center frame 410, spaced apart from the center frame 410 with the center frame 410 therebetween and mutually oriented A second vibrating cassette 220, a plurality of first ultrasonic vibrators 211 installed on the front of the first vibrating cassette 210 to generate an ultrasonic frequency vibration of 25 to 30 kHz, and a second vibrating cassette 220. And a plurality of second ultrasonic vibrators 221 which are installed at the front of the panel to generate ultrasonic frequency vibrations of 35 to 45 kHz.

Accordingly, the dual frequency ultrasonic waves are irradiated with each other to solve many problems (there are no structurally specified cases) that occur when the dual frequency ultrasonic vibration is applied to the actual sludge treatment apparatus, not theoretically. It is possible to provide a sludge treatment apparatus using ultrasonic waves that can be applied without problems and can effectively differentiate the sewage sludge through the dual frequency ultrasonic vibration.

That is, conventionally, since problems due to standing waves, which are a phenomenon indicating an energy distribution such as a waveform stopping when a sludge is processed using ultrasonic waves of a single frequency, a double according to the present invention is solved. By using the ultrasonic ultrasonic stirring unit 200, the ultrasonic wave having two or more frequencies may be effectively processed to sludge.

In addition, the first vibrating cassette 210 and the second vibrating cassette 220 are not directly attached to the outer circumferential surface of the center frame 410 and are provided to be spaced apart from the center frame 410, thereby providing an installation position of the vibrating cassette or The number of vibration cassettes may be additionally installed as necessary without limiting the number thereof, so that the solubilization rate of the sludge may be further increased.

5 is a graph showing a change in soluble chemical oxygen demand (SCOD) according to the ultrasonic and irradiation density of the dual frequency by the sludge treatment apparatus using ultrasonic waves according to the present invention, the dual frequency ultrasonic stirring unit 200 according to the present invention When the acoustic density of the dual frequency ultrasonic wave generated by 198 WL is about 1 hour, when the sonication time is about 1 hour, the soluble chemical oxygen demand is increased to 8000 mg / L or more, and the solubilization rate of the sludge is greatly increased (about 1 hour). Sludge is undifferentiated up to 92.1%).

The first vibrating cassette 210 and the second vibrating cassette 220 are provided in the form of a vertically provided box, and the plurality of first ultrasonic vibrators 211 are exposed through the front surface of the first vibrating cassette 210. Is disposed so as to be sealed from the outside in the first vibration cassette 210 is installed so as not to be damaged when the first vibration cassette 210 is locked in the sludge 10, the plurality of second ultrasonic vibrators 221 It is disposed to be exposed through the front surface of the second vibrating cassette 220, the inside of the second vibrating cassette 220 is installed to be sealed from the outside so as not to be damaged when the second vibrating cassette 220 is locked in the sludge 10 do.

Dual frequency ultrasonic stirring unit 200 according to the present invention, according to the component and inflow amount of the sludge 10 to be solubilized into the body 100, the body 100 by the rotation drive of the stirring drive unit 300 Irradiating the sludge 10 inside the body 100 to cross the dual frequency ultrasonic vibrations of 28 kHz and 40 kHz while stirring the sludge 10 inside, or by stopping the rotation driving of the stirring driver 300. In the state in which the agitation is stopped, dual frequency ultrasonic vibrations of 28 kHz and 40 kHz are irradiated to the sludge 10 inside the body 100 so as to cross each other, thereby destroying the cells of the sludge 10.

In this case, the stirring driver 300, the first ultrasonic vibrator 211, and the second ultrasonic vibrator 221 are controlled by the controller 700.

Accordingly, the ultrasonic vibration is evenly transmitted to the sludge 10 inside the body 100 by the dual frequency ultrasonic vibrations irradiated with each other even when the stirring is stopped. Is generated so that the solubilization of the sludge 10 can be made sufficiently effective without the occurrence of the dead zone that does not reach the ultrasonic wave, but when the center frame 410 is rotated by the drive of the stirring drive 300, the dual frequency ultrasonic stirring unit 200 Sludge so that the first vibration cassette 210 and the second vibration cassette 220 provided with the first ultrasonic vibrator 211 and the second ultrasonic vibrator 221 are rotated to mix the sludge 10 inside the body 100. While stirring (10), solubilization can be made more uniformly into the interior of the sludge (10).

On the other hand, since the first ultrasonic vibrator 211 and the second ultrasonic vibrator 221 are installed in the liquid phase of the sludge 10 filled in the interior of the apparatus, that is, the body 100, it is attached to the outer wall to irradiate ultrasonic waves. Less noise than that, even if the capacity of the ultrasonic treatment tank, that is, the size of the body 100 is increased, the size of the first vibration cassette 210 and the second vibration cassette 220 and the first vibration cassette 210 and the second By increasing the number of the first ultrasonic vibrator 211 and the second ultrasonic vibrator 221 installed in the vibrating cassette 220, it is possible to flexibly realize the effect of easy design.

The vibration output of the dual frequency ultrasonic stirring unit 200 according to the present invention is preferably about 9400 ~ 9800 W.

Accordingly, the solubilization of the sludge 10 introduced into the body 100 may be optimized and performed while also optimizing the energy consumption efficiency.

As shown in FIG. 2, the stirring drive unit 300 includes a motor installed at an upper portion of the stirring control unit 401 supported by the installation support unit 145 installed at the upper portion of the body 100.

As shown in FIGS. 2 and 3, the stirring transmission unit 400 is provided between the stirring driving unit 300 and the center frame 410, and includes a stirring control unit 401 configured as a reduction gear to adjust the rotation speed. And a central frame 410 connected to the stirring driver 300 through the stirring controller 401 and rotating at a speed of about 10 rpm, and the first vibration cassette 210 and the second vibration cassette 220. Each pair includes two pairs of cassette wire stirring frames 420 disposed to cross each other so as to be fixedly connected to the upper and center frames 410.

Accordingly, as the stirring drive unit 300 is operated by the control of the control unit 700 and the cassette wire stirring frame 420 is rotated as the center frame 410 is rotated, the cassette wire stirring frame 420 is fixedly connected. The first vibrating cassette 210 and the second vibrating cassette 220 may be rotated to agitate the sludge 10 inside the body 100.

As shown in FIG. 2, a pair of cassettes are coupled to the center frame 410 such that upper and lower portions of the first vibration cassette 210 and the second vibration cassette 220 are fixed to the center frame 410. Plates 411 are provided at positions corresponding to the upper and lower portions of the first vibrating cassette 210 and the second vibrating cassette 220, respectively, and above the cover 140 of the body 100. An upper bearing part 413 is provided to support rotation, and a lower bearing part 415 is provided between the inner bottom of the body 100 and the lower part of the center frame 410 to support rotation of the center frame 410. Stable support at the bottom of the (410).

Inside the cassette wiring stirring frame 420, as shown in FIG. 2, wires 421 respectively connected to the first ultrasonic vibrator 211 and the second ultrasonic vibrator 221 are wired to be sealed from the outside.

Accordingly, when the cassette wiring stirring frame 420 is immersed in the sludge 10, the sludge 10 is prevented from leaking into the cassette wiring stirring frame 420, so that the wire 421 is driven by the sludge 10. Electrical damage can be prevented.

On the other hand, the stirring transmission unit 400 according to the present invention, as shown in Figure 2, the wire 421 connected to the first ultrasonic vibrator 211 and the second ultrasonic vibrator 221 of the center frame 410 It is preferable to further include a slip ring 430 is installed on the upper portion of the cassette wiring stirring frame 420 in the center frame 410 to prevent twisting by rotation.

In addition, the sludge treatment apparatus using ultrasonic waves according to the present invention, as shown in Figure 4 and 9, the first ultrasonic vibrator 211 and the second of the dual frequency ultrasonic stirring unit 200 by the wire 421 It is preferable to further include an ultrasonic vibration unit 500 connected to the ultrasonic vibrator 221 to adjust the vibration frequency and the output of the ultrasonic waves.

Accordingly, the controller 700 controls the ultrasonic vibrator 500 to control the first or second ultrasonic vibrator 211 and the second ultrasonic vibrator 221, respectively, which generate ultrasonic vibrations having different dual frequencies. Can be.

On the other hand, as another embodiment of the present invention, as shown in Figure 6, in the center frame 410 is surrounded by the first vibration cassette 210 and the second vibration cassette 220 of the dual frequency ultrasonic stirring unit 200 On the outer circumferential surface of the wrapped portion, a plurality of stirring blades 417 may be provided to protrude radially.

Accordingly, as the center frame 410 is rotated, the inner sludge 10 surrounded by the first vibrating cassette 210 and the second vibrating cassette 220 is agitated by the stirring blades 417. Vortex is formed in the sludge 10 so that the solubilization of the sludge 10 can be further promoted.

On the other hand, as another embodiment of the present invention, as shown in Figure 7, in the center frame 410 to the first vibration cassette 210 and the second vibration cassette 220 of the dual frequency ultrasonic stirring unit 200 A plurality of third ultrasonic vibrators 419 may be installed on any one surface of the plurality of stirring blades 417 protruding radially on the outer circumferential surface of the enclosed portion.

In this case, the frequency of the ultrasonic vibration irradiated through the third ultrasonic vibrators 419 may be matched with the frequency of the ultrasonic vibration irradiated from any one of the first ultrasonic vibrator 211 and the second ultrasonic vibrator 221, Otherwise, it can be set to any other frequency.

Accordingly, when the center frame 410 is rotated, the inner sludge 10 surrounded by the first vibrating cassette 210 and the second vibrating cassette 220 is stirred and irradiated from the third ultrasonic vibrator 419. Due to the ultrasonic vibration, the micronization of the sludge 10, the decomposition of cells and the solubilization of the sludge 10 may be further activated.

Meanwhile, in the sludge treatment apparatus using ultrasonic waves according to another embodiment of the present invention, as shown in FIGS. 8 and 9, the first vibration cassette 210 and the second vibration of the dual frequency ultrasonic stirring unit 200 are provided. A level sensor 600 installed perpendicularly to at least one of the cassettes 220 and provided with a sensing contact at a predetermined height, and based on a result detected by the level sensor 600, a first ultrasonic vibrator 211 and a second ultrasonic wave. The control unit 700 for controlling the ultrasonic vibrator 500 so that the vibrators 221 are sequentially operated from the bottom up, and the frequency of ultrasonic vibration to be irradiated from the first ultrasonic vibrator 211 and the second ultrasonic vibrator 221. The electronic device may further include an input unit 710 for receiving information about an output, an operation time, and the like, and a storage unit 720 for storing the information received from the input unit 710.

Accordingly, the control unit 700 so that the first ultrasonic vibrator 211 and the second ultrasonic vibrator 221 are sequentially operated from below according to the level of the sludge 10 introduced into the body 100 and filled. By controlling the vibrator 500, it is possible to effectively reduce the consumption of energy, including electricity.

Meanwhile, as shown in FIG. 8, a heating unit 170 operated by an electric heating method may be provided inside the body 100 of the sludge treatment apparatus using ultrasonic waves according to the present invention.

Accordingly, the control unit 700 controls the heating unit 170 to maintain the sludge 10 introduced into the body 100 to be filled at a constant temperature so that the solubilization of the sludge 10 is more easily performed. Can be.

Accordingly, according to the present invention, the middle temperature anaerobic digestion tank operating temperature should be maintained at about 35 ~ 37 ℃ can be further increased the production of high-quality biogas, and the ultrasonic wave that can further improve the performance of the digester The sludge treatment apparatus used can be provided.

Although the technical aspects have been described in the accompanying drawings and described above, the technical idea of the present invention is for the purpose of description, and not by way of limitation, the person skilled in the art of the present invention. It will be understood that various modifications and changes can be made in the present invention without departing from the technical scope of the following claims.

100: body 200: dual frequency ultrasonic stirring unit
210: first vibration cassette 211: first ultrasonic vibrator
220: second vibration cassette 221: second ultrasonic vibrator
300: stirring drive unit 400: stirring drive unit
410: center frame 420: cassette wiring stirring frame
421: wire 500: ultrasonic vibration unit

Claims (5)

A body connected to the sludge storage tank so that sludge is introduced into the sludge storage tank, the body being installed higher than the sludge storage tank by a support frame;
It is rotatably provided inside the body to allow the sludge inside the body to be stirred or agitated, and different dual-frequency ultrasonic waves are transmitted to the sludge inside the body to cross each other in the interior of the body to Dual frequency ultrasonic stirring unit solubilizing the sludge by ultrasonic vibration of a dual frequency irradiated with each other;
A stirring drive unit connected to the dual frequency ultrasonic stirring unit to provide a rotational driving force to rotate the dual frequency ultrasonic stirring unit; And
A stirring transmission unit provided between the dual frequency ultrasonic stirring unit and the stirring driving unit and having a center frame to transfer the rotation driving force provided by the stirring driving unit to the dual frequency ultrasonic stirring unit;
Sludge treatment apparatus using ultrasonic waves comprising a. The method of claim 1,
The dual frequency ultrasonic stirring unit,
A pair of first vibrating cassettes provided to be oriented mutually with the center frame interposed therebetween,
A pair of second vibration cassettes provided to intersect with respect to the first vibration cassette with respect to the center frame and mutually orientated with the center frame therebetween;
A plurality of first ultrasonic vibrators installed on the front surface of the first vibration cassette to generate ultrasonic frequency vibrations of 25 to 30 kHz;
Sludge treatment apparatus using ultrasonic waves, characterized in that it comprises a plurality of second ultrasonic vibrators installed on the front of the second vibration cassette to generate ultrasonic frequency vibration of 35 ~ 45 kHz. The method of claim 2,
The stirring transmission unit includes two pairs of cassette wire stirring frames arranged so that another pair is crossed with respect to one pair so as to be connected to an upper portion of the first vibration cassette and the second vibration cassette and the center frame.
The sludge processing apparatus using ultrasonic waves, wherein the wires respectively connected to the first ultrasonic vibrator and the second ultrasonic vibrator are wired to be sealed from the outside in the cassette wiring stirring frame. The method of claim 3,
Sludge treatment apparatus using ultrasonic waves, characterized in that it further comprises an ultrasonic vibration unit connected to the first ultrasonic vibrator and the second ultrasonic vibrator of the dual frequency ultrasonic stirring unit by the wire to adjust the vibration frequency and output of the ultrasonic waves. . The method according to any one of claims 1 to 4,
The vibration output of the dual frequency ultrasonic stirring unit is sludge treatment apparatus using ultrasonic waves, characterized in that 9400 ~ 9800 W.

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