JP4483664B2 - Sludge treatment equipment - Google Patents

Description

  The present invention relates to a sludge treatment apparatus that enables a significant reduction in the amount of organic matter in waste liquid generated by waste water treatment.

  Conventional sludge reduction technologies include biological / chemical sludge treatment and physical sludge treatment. Biological / chemical sludge treatment is performed in a short time (about 8 hours) using chemicals. It is suitable for large-capacity sludge treatment, and physical sludge treatment is performed for a long time (about 24 hours) using ultrasonic waves, etc., and is suitable for small-capacity sludge treatment (for example, Patent Documents). 1, see Patent Document 2).

  For example, in the treatment technique disclosed in Patent Document 2, organic sewage is treated in an aerobic biological treatment tank, and solid-liquid separation is performed in a sedimentation tank to obtain treated water and sludge. This sludge is circulated to the aerobic biological treatment tank as return sludge and a part is introduced into the storage tank as surplus sludge. In the storage tank, the sludge is solubilized using ultrasonic waves oscillated from an ultrasonic oscillator, and returned to the aerobic biological treatment tank as solubilized sludge for biodegradation. Is disclosed.

Moreover, in order to raise the sludge solubilization rate especially by ultraviolet irradiation, in addition to the sludge solubilization processing by ultraviolet irradiation, a processing apparatus that uses ultrasonic irradiation processing in combination has been proposed (for example, see Patent Document 3).
JP-A-5-345192 Japanese Patent Laid-Open No. 11-128975 JP 2004-113918 A

  However, it has not been proposed that the above-described conventional processing apparatus is a compact apparatus with a long life of the ultrasonic transducer and low power consumption, and it is also about improving the stabilization and reliability of the ultrasonic processing. Not proposed.

  Therefore, an object of the present invention is to provide a sludge treatment apparatus that can prevent bad odor due to anaerobic formation of sludge and efficiently perform ultrasonic treatment even when the sludge concentration is high.

  Another object of the present invention is to provide a sludge treatment apparatus capable of efficiently removing foam generated by ultrasonic treatment from the ultrasonic treatment tank, stabilizing the ultrasonic treatment, and improving reliability.

  The sludge treatment apparatus of the present invention according to claim 1 is the sludge treatment apparatus comprising an ultrasonic vibrator in an ultrasonic treatment tank, wherein the ultrasonic treatment tank is divided into a first treatment tank and a second treatment tank by a weir. The first treatment tank is provided with a sludge inlet and the ultrasonic vibrator, the second treatment tank is provided with an ultrasonic treatment sludge outlet, and the second treatment tank is provided with the second treatment tank. It is provided outside the one processing tank, the upper end surface of the weir is held horizontally, and aeration means is provided in the first processing tank.

  According to a second aspect of the present invention, in the sludge treatment apparatus according to the first aspect, the second treatment tank is provided on both side portions of the first treatment tank, and the second treatment tank includes the second treatment tank. The upper end surface of the weir is different from the upper end surface of the weir in the other second processing tank.

  According to a third aspect of the present invention, in the sludge treatment apparatus according to the first or second aspect, an ultrasonic wave comprising an ultrasonic irradiation surface and an ultrasonic reflection surface of the ultrasonic transducer in the first treatment tank. The aeration means is provided outside the sound field space.

  According to a fourth aspect of the present invention, in the sludge treatment apparatus according to the first or second aspect, the ultrasonic sound field space and the aeration section provided with the aeration means are separated by a partition plate, and the lower end of the partition plate And a space between the bottom of the first treatment tank.

  According to a fifth aspect of the present invention, in the sludge treatment apparatus according to the first or second aspect, the upper end surface of the weir is a convex curved surface.

  According to a sixth aspect of the present invention, in the sludge treatment apparatus according to the first or second aspect, a sludge guide plate that connects the upper end surface of the weir and the bottom surface of the second treatment tank to the second treatment tank. Provided, and an angle between the sludge guide plate and the weir is set to 0 degrees or more and 45 degrees or less.

  According to a seventh aspect of the present invention, in the sludge treatment apparatus according to the first or second aspect, a hydrophobic surface treatment is performed on the inner wall of the second treatment tank.

  The present invention according to claim 8 is the sludge treatment apparatus according to claim 1 or 2, wherein a lid is provided at an upper portion of the ultrasonic treatment tank, and defoamed water is ejected from the lower portion of the lid. To do.

  A ninth aspect of the present invention is the sludge treatment apparatus according to the first or second aspect, further comprising means for vibrating the liquid surface in the first treatment tank.

  The present invention according to claim 10 is the sludge treatment apparatus according to claim 1 or 2, wherein the suspended matter on the liquid level in the first treatment tank is transferred from the first treatment tank to the second treatment tank. It has a means for sweeping out.

  The present invention according to claim 11 is the sludge treatment apparatus according to claim 1 or 2, wherein the suspended matter on the liquid level in the first treatment tank is transferred from the first treatment tank to the second treatment tank. It is characterized by having a blower means for sweeping away by wind pressure.

  The present invention can increase the dissolved oxygen concentration of sludge without causing ultrasonic attenuation due to bubbles by supplying air to the ultrasonic treatment tank while avoiding the ultrasonic field. This prevents anaerobic conditions even at high concentrations of sludge, prevents the formation of anaerobic foams and odors, and efficiently generates ultrasonic cavitation because dissolved oxygen is the nucleus of cavitation. There is an effect that can be made.

  In the present invention, the ultrasonic treatment tank is divided into a first treatment tank and a second treatment tank by a weir, the first treatment tank is provided with a treatment sludge inlet and an ultrasonic vibrator, The treatment tank is provided with a treatment sludge outlet, the second treatment tank is provided outside the first treatment tank, the upper end surface of the weir composed of convex curved surfaces is held horizontally, and the second treatment tank By providing a sludge guide plate that connects the upper end surface of the second treatment tank and the bottom surface of the second treatment tank, foam generated by the ultrasonic treatment can be efficiently removed from the ultrasonic treatment tank, the ultrasonic treatment is stabilized, and the reliability of the apparatus There is an effect that can be increased.

 The sludge treatment apparatus according to the first embodiment of the present invention is a sludge treatment apparatus provided with an ultrasonic vibrator in an ultrasonic treatment tank. The ultrasonic treatment tank is divided into a first treatment tank and a second treatment by a weir. The first treatment tank is provided with a treatment sludge inlet and an ultrasonic vibrator, the second treatment tank is provided with a treatment sludge outlet, and the second treatment tank is connected to the first treatment tank. It is provided outside, the upper end surface of the weir is held horizontally, and aeration means is provided in the first treatment tank. According to this embodiment, since air can be sent into the sludge in the first treatment tank, the dissolved oxygen concentration of the sludge in the first treatment tank is maintained, and the sludge is prevented from becoming anaerobic. It is possible to prevent the generation of anaerobic foam and the generation of bad odor. Moreover, since the upper end surface of the weir is horizontal, the sonication sludge flowing out from the first treatment tank flows out uniformly over the entire surface of the weir, and as a result, the flow of sludge in the sonication tank is rectified. Therefore, the flow becomes uniform and ultrasonic treatment is performed uniformly.

  The second embodiment of the present invention is the sludge treatment apparatus according to the first embodiment, wherein the second treatment tank is provided on both sides of the first treatment tank, and the weir in one second treatment tank. And the height of the upper end surface of the weir in the other second processing tank are different. According to the present embodiment, even if the outlet of one of the second treatment tanks is blocked by foreign matter or the like, it can overflow to the other second treatment tank, so that the sludge can be treated. This can be performed reliably and overflow can be avoided.

  According to a third embodiment of the present invention, in the sludge treatment apparatus according to the first and second embodiments, an ultrasonic wave composed of an ultrasonic irradiation surface and an ultrasonic reflection surface of an ultrasonic transducer in the first treatment tank. Aeration means is provided outside the sound field space of the sound wave. According to the present embodiment, since air can be supplied while avoiding the acoustic field space of ultrasonic waves, the dissolved oxygen concentration of the sludge in the first treatment tank is reduced without causing ultrasonic attenuation by bubbles. It is possible to prevent the sludge from becoming anaerobic, to prevent the formation of anaerobic foam and bad odor, and because dissolved oxygen becomes the core of cavitation, it is possible to generate ultrasonic cavitation more efficiently. it can.

  According to a fourth embodiment of the present invention, in the sludge treatment apparatus according to the first and second embodiments, the sound field space and the aeration section provided with the aeration means are separated by a partition plate, and the lower end of the partition plate and the first A space is provided between the bottom of one processing tank. According to the present embodiment, since air can be supplied while avoiding the acoustic field space of ultrasonic waves, the dissolved oxygen concentration of the sludge in the first treatment tank is reduced without causing ultrasonic attenuation due to bubbles. It is possible to prevent the sludge from becoming anaerobic, to prevent the formation of anaerobic foam and bad odor, and because dissolved oxygen becomes the core of cavitation, it is possible to generate ultrasonic cavitation more efficiently. it can. In addition, since the aeration section and the sound field space are separated by a partition plate, and a space is provided between the lower end of the partition plate and the bottom portion of the first treatment tank, stirring by the air lift effect is effectively performed, Sonication can be performed efficiently.

  In the fifth embodiment of the present invention, in the sludge treatment apparatus according to the first and second embodiments, the upper end surface of the weir is formed by a convex curved surface. According to this Embodiment, the foreign material and foam which floated on the liquid level of the 1st processing tank are hard to stay in a dam part, and can be efficiently discharged | emitted to a 2nd processing tank.

  The sixth embodiment of the present invention is a sludge guide plate for connecting the upper end surface of the weir and the bottom surface of the second treatment tank to the second treatment tank in the sludge treatment apparatus according to the first and second embodiments. The angle between the sludge guide plate and the weir is 0 degree or more and 45 degrees or less. According to the present embodiment, the sludge flow that overflows from the first treatment tank to the second treatment tank can bend gently, so that the upper end surface of the weir and the surface of the weir on the second treatment tank side It is possible to prevent foreign matter and foam from adhering to the surface.

  In the seventh embodiment of the present invention, in the sludge treatment apparatus according to the first and second embodiments, a hydrophobic surface treatment is applied to the inner wall of the second treatment tank. According to the present embodiment, when the sludge that has overflowed the weir from the first treatment tank is thinly extended and flows down the second treatment tank, the solid content in the sludge adheres to the inner wall of the second treatment tank. Can be prevented, and the generation of malodor can be prevented.

  In the eighth embodiment of the present invention, in the sludge treatment apparatus according to the first and second embodiments, a lid is provided at the upper part of the ultrasonic treatment tank, and defoamed water is ejected from the lower part of the lid. It is a thing. According to the present embodiment, even when foam is generated and accumulated in the first processing tank or the second processing tank, the foam can be erased by ejecting defoaming water from the lower part of the lid, and bad odor Can be prevented.

  The ninth embodiment of the present invention has means for vibrating the liquid surface in the first treatment tank in the sludge treatment apparatus according to the first and second embodiments. According to the present embodiment, even when foam is generated and accumulated in the first processing tank, the foam is caused to overflow the weir by vibrating the liquid surface in the first processing tank, and the second It can be washed away into the treatment tank, and the generation of malodor can be prevented.

  In the sludge treatment apparatus according to the first and second embodiments, the tenth embodiment of the present invention applies the second treatment from the first treatment tank to the suspended matter on the liquid surface in the first treatment tank. It has a means to sweep into the tank. According to the present embodiment, even when foam is generated and accumulated in the first treatment tank, the foam is removed by sweeping the liquid level floating material in the first treatment tank to the second treatment tank. Overflow of the weir can be carried out to the second treatment tank, and generation of malodor can be prevented.

  In an eleventh embodiment of the present invention, in the sludge treatment apparatus according to the first and second embodiments, liquid surface floating matter in the first treatment tank is transferred from the first treatment tank to the second treatment. It has an air blowing means that pushes it into the tank with wind pressure. According to the present embodiment, even when foam is generated and accumulated in the first treatment tank, the suspended matter on the liquid level in the first treatment tank is passed through the weir to the second treatment tank by wind pressure. It can be made to flow and be washed away into the second treatment tank, and the generation of malodor can be prevented.

  Hereinafter, the sludge treatment apparatus of the Example by this invention is demonstrated with reference to drawings. FIG. 1 is a block diagram showing a sludge treatment apparatus according to an embodiment of the present invention, FIG. 2 is a schematic view of an ultrasonic treatment tank 50 as viewed from above, and FIG. 3 is a schematic view of a cross section of the ultrasonic treatment tank 50 as seen from the front. 4 is a schematic cross-sectional view of the ultrasonic reaction tank 50 as viewed from the side. Drainage and sludge discharged from factories and sewage treatment plants are stored in a drainage storage tank (not shown). When reusing or reducing the volume of waste liquid or sludge by performing some kind of treatment, it is important to first remove foreign substances contained in the waste liquid.

  The sludge treatment apparatus according to this embodiment includes a high-speed swirl separation tank 20, a low-speed swirl separation tank 30, and an ultrasonic treatment tank 50 in the main body case 1 in FIG. Here, the high-speed swirl separation tank 20 and the low-speed swirl separation tank 30 constitute a foreign matter separation device. The high-speed swirling separation tank 20 is composed of a cylindrical casing at the upper part and a conical casing at the lower part. The sludge taken in from the sludge intake pipe A is branched into a small amount of intermediate treatment sludge and the remaining sludge and contained in the sludge. The relatively large and heavy foreign matter is returned to the sludge storage tank through the sludge return pipe C together with the sludge. The low-speed swirling separation tank 30 includes a cylindrical body portion 31 and a bowl-shaped bottom portion 32, and intermediate treatment sludge is introduced into the low-speed swirling separation tank 30 in the body portion 31 of the low-speed swirling separation tank 30. The inter-tank connecting pipe B and the treated sludge outflow pipe D for flowing out the treated sludge are provided so as to protrude into the low-speed swirling separation tank 30. The inter-tank connection pipe B for introducing the sludge is disposed below the treated sludge outflow pipe D and above the bottom portion 32, and an elbow is formed at the outlet 33 of the inter-tank connection pipe B. Yes.

  In the above configuration, the intermediate treatment sludge is caused to flow out in the tangential direction of the body portion 31 in the low speed swirl separation tank 30, and a gentle swirl liquid flow is formed in the low speed swirl separation tank using the flow rate of the discharged intermediate treatment sludge. The flow in the low-speed swirling separation tank is rectified and the foreign matter having a mass heavier than the intermediate treatment sludge, such as toilet paper and hair, is weakened by the weak centrifugal force generated by the low-speed swirling liquid flow. The particles can be agglomerated while being gently moved to the part, and can be separated by gravity. On the other hand, only necessary treatment sludge is taken out from the low-speed swirl separation tank 30, and the separated foreign matter is returned to the sludge storage tank 1 from the sludge return connection pipe E at the bottom of the low-speed swirl separation tank 30. The inlet 34 of the treated sludge outflow pipe D is below the water surface in the low-speed swirling separation tank 30, and the introducing port 34 is open on the upper side. The treatment liquid can be discharged without introducing the sedimentary foreign matter that has settled in 32 and the foreign matter separated into the inner periphery of the low-speed swirl separation tank 30 by the inertial force caused by the swirling flow. As described above, by reducing the foreign matter contained in the sludge flowing into the ultrasonic reaction tank 50 as much as possible, the ultrasonic treatment can be performed efficiently and the life of the ultrasonic vibrator can be extended.

  1-3, the ultrasonic treatment tank 50 includes a first treatment tank 51 and second treatment tanks 52A and 52B therein, and the first treatment tank 51 and the second treatment tanks 52A and 52B. Is defined by the weirs 53A and 53B, respectively, and the sludge in the first treatment tank 51 flows through the weirs 53A and 53B and is guided to the second treatment tanks 52A and 52B. The weirs 53A and 53B have horizontal upper ends across the entire inner wall width between the inner walls of the first processing tank 51 or the second processing tanks 52A and 52B. Further, the upper end surfaces of the weirs 53A and 53B have a convex curved surface 73 over the entire width, and a sludge guide plate 74 is provided at an angle of about 10 degrees with the weirs 53A and 53B from the second treatment tank side of the convex curved surface 73. Furthermore, the height of the upper end surface of the weir 53A in one second processing tank 52A and the upper end surface of the weir 53B in the other second processing tank 52B are different from each other, so that the second processing tanks 52A and 52B are different. The inner wall of the sludge guide plate 74 is coated with a fluororesin.

  Further, the first treatment tank 51 is partitioned by a partition plate 72 into a sound field space formed by the ultrasonic wave irradiation surface and the ultrasonic wave reflection surface of the ultrasonic vibrator 14 and an aeration unit aerated by the aerator 70. A space is provided between the lower end of the partition plate 72 and the bottom of the ultrasonic treatment tank 50.

  Further, the ultrasonic transducer 14 is attached to the surface of the first treatment tank 51 on the side of the weir 53A so that the radiation surface thereof is parallel to the vertical direction, and the surface to which the ultrasonic transducer 14 is attached. A drainage inflow port 54 is provided on a surface (reflection wall) opposite to. The inflow port 54 is connected to the pipe D. On the other hand, an outlet 55 for discharging the drainage is provided below the second treatment tanks 52A and 52B. The outlet 55 is connected to the pipe F. Further, a drain port 56 is provided on the bottom surface of the first processing tank 51 to discharge the drained liquid that has settled on the bottom surface of the first processing tank 51. The drainage liquid overflows from above the ultrasonic transducer 14 while maintaining a constant water level by the weir 53A above the attachment surface of the ultrasonic transducer 14.

  Here, the inflow port 54 is provided at a position of 1/3 or less from the lower side in the height direction of the ultrasonic transducer 14, or 1 in height from the bottom surface of the first treatment tank 51 to the weir 53 </ b> A. / 3 or less. The inflow port 54 is preferably attached by forming a protrusion having a length of λ or less in the first processing tank 51. The wavelength λ is expressed by λ = a / f [m] where the ultrasonic oscillation frequency is f [Hz] and the sound velocity in water is a [m / s].

  In the above configuration, since the upper end surfaces of the weirs 53A and 53B are horizontal and convex curved surfaces, the influence of the surface tension on the upper end surfaces of the weirs 53A and 53B can be reduced, and the outflow from the first treatment tank 51 occurs. The ultrasonically treated sludge can be uniformly discharged over the entire surface of the weirs 53A and 53B. As a result, the flow of sludge in the first treatment tank 51 is rectified and becomes a non-biased flow, so that the ultrasonic treatment can be performed uniformly, and the foreign matter or foam that has floated on the liquid surface of the first treatment tank 51 can be obtained. Can be prevented from staying in the weir portions 53A and 53B of the first treatment tank 51.

  Further, the ultrasonic treatment sludge that has flowed over the upper end surfaces of the weirs 53A and 53B flows down the sludge guide plate 74, so that it overflows from the first treatment tank 51 as compared with the case where the weirs 53A and 53B flow down vertically. As a result, the flow of the ultrasonically treated sludge is smoothly turned, and foreign matter can be prevented from adhering to the upper end surfaces of the weirs 53A and 53B. It is effective in preventing The inner walls of the second treatment tanks 52A and 52B and the sludge guide plate 74 are hard to adhere sludge and foreign matter due to the fluororesin coating.

  In addition, when the ultrasonic treatment sludge flows down the surface of the sludge guide plate 74, a component force of the sludge weight is applied in a direction perpendicular to the sludge guide plate 74, and a frictional force is generated between the sludge and the sludge guide plate. It is possible to prevent foreign matter from adhering to the surface of the sludge guide plate 74.

  Further, by making the height of the upper end surface of the weir 53A in one second processing tank 52A different from the upper end surface of the weir 53B in the other second processing tank 52B, only the weir 53A having a low height is obtained. Since the ultrasonic treatment sludge will overflow, the flow rate of the ultrasonic treatment sludge flowing over the weir 53A can be doubled, so that the solid content in the sludge adheres to the inner wall of the second treatment tank 52A. It is possible to prevent the cause of bad odor and the outflow 55 from being blocked. Even if the outlet 55 of the second treatment tank 52A is clogged with sludge for some reason, the ultrasonic treatment sludge is caused to overflow from 53B higher than the weir 53A, and the other second treatment tank 52B. Therefore, it is possible to reliably perform the sludge continuous treatment and to avoid the overflow of the ultrasonic treatment tank 50.

  Further, by sending air bubbles from the aerator 70 to the first treatment tank, an upward flow can be generated in the sludge of the aeration section, and the space between the lower end of the partition plate 72 and the bottom of the ultrasonic treatment tank 50 can be generated. Thus, the sludge in the sound field space can be drawn in, the downflow can be generated in the sludge in the sound field space, the inside of the first treatment tank can be efficiently stirred, and the sludge treatment by ultrasonic waves Can be performed efficiently. In addition, bubbles can be supplied only to the ultrasonic field space and the isolated aeration unit, and air can be supplied to the sludge in the sound field space in a dissolved state. Because it can maintain the concentration of dissolved air that is the core of ultrasonic cavitation without causing it, cavitation by ultrasonic waves can be generated efficiently, and sludge treatment can be efficiently performed by ultrasonic waves. it can.

  By irradiating the sludge with ultrasonic waves, the dissolved gas in the sludge is degassed by cavitation, the sludge in the treatment tank becomes anaerobic, anaerobic foam is generated, accumulated in the ultrasonic treatment tank, and super Disturbing the sound field of the sonic wave has caused problems such as a decrease in the efficiency of sludge treatment by ultrasonic waves, anaerobic foam blocking the outlet 55 of the ultrasonic treatment tank 50, and a bad odor. . In particular, when treating sludge with a high concentration such that MLSS exceeds 10,000 mg / L, the above-mentioned problems have occurred due to poor fluidity of the sludge. In particular, in such a case, it is effective to aerate by sending bubbles from the aerator 70 to the ultrasonic treatment tank 50 as in this embodiment. Aeration may be continuous, but aeration may be intermittently performed according to the properties of the sludge.

  A lid 60 is provided on the upper part of the ultrasonic treatment tank 50. The lid body 60 is provided so as to cover the first treatment tank 51 and the second treatment tanks 52A and 52B, and the defoaming water is supplied from the upper part through the pipe G, and the defoaming water is ejected from the lower part. It is configured. The lid body 60 is formed with a plurality of box bodies 61, and the box bodies 61 are provided with a plurality of defoaming water ejection holes 62 on the side walls as well as the lower surface of the box body 61.

  Thus, defoaming water is guided into the plurality of boxes 61, and the defoaming water in the boxes 61 is ejected, so that water can be uniformly sprayed onto the water surface of the ultrasonic treatment tank 50. The foam generated on the water surface of the treatment tank 51 can be removed. In addition, when defoaming water is not used, the outer wall of the ultrasonic treatment tank 50 is vibrated by a cam attached to a motor, a wave is generated in the liquid surface of the first treatment tank, and the water surface of the first treatment tank 51 is The generated foam may be forced to overflow from the weirs 53A and 53B.

  In addition, a foam foam removing plate that can move horizontally on the water surface of the first treatment tank 51 is provided, and bubbles generated on the water surface of the first treatment tank 51 are moved intermittently by moving the foam removal plate. It may be forced to overflow from the weirs 53A and 53B.

  Further, a slit is provided on the side surface of the ultrasonic treatment tank 50, and air is blown out from the slit toward the water surface of the first treatment tank 51, so that bubbles generated on the water surface of the first treatment tank 51 are dammed by wind pressure. It may be forced to overflow from 53A and 53B.

  The sludge treatment apparatus according to the present invention can be applied to various effluents discharged from factories, wastewater treatment facilities, and the like.

The block diagram which shows the sludge processing apparatus by one Example of this invention Schematic of the ultrasonic treatment tank according to the present embodiment as seen from above. Schematic of the cross section seen from the front of the ultrasonic treatment tank according to the present embodiment Schematic of a cross section of the ultrasonic treatment tank according to the present embodiment as seen from the side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body case 2 Control panel 3 Water leak sensor 4 Adjuster 5 Main body case partition plate 14 Ultrasonic vibrator 15 Ultrasonic oscillator 20 High-speed swirl separation tank 30 Low-speed swirl separation tank 31 Body part 32 Bottom 33 Outlet 34 Inlet 35 Valve 36 Exhaust Outlet 41 Electric control valve 42 Flow meter 43 Three-way valve 44 Defoaming water introduction pipe 50 Ultrasonic treatment tank 51 First treatment tank 52A, 52B Second treatment tank 53A, 53B weir 54 Inlet 55 Outlet 56 Drain port 57 Bulb 58 UV lamp 60 Lid 61 Box 62 Ejection hole 70 Aerator 71 Air piping 72 Partition plate 73 Weir upper end convex curved surface A, B, C, D, E, F, G, H piping

Claims (11)

In the sludge treatment apparatus provided with an ultrasonic vibrator in the ultrasonic treatment tank, the ultrasonic treatment tank is divided into a first treatment tank and a second treatment tank by a weir, and sludge is contained in the first treatment tank. An inlet and the ultrasonic vibrator, the second treatment tank is provided with an ultrasonic treatment sludge outlet, the second treatment tank is provided outside the first treatment tank, and the top of the weir A sludge treatment apparatus in which an end surface is held horizontally and an aeration means is provided in the first treatment tank. The second treatment tank is provided on both sides of the first treatment tank, the upper end surface of the weir in one of the second treatment tanks, and the upper end surface of the weir in the other second treatment tank. The sludge treatment apparatus according to claim 1, wherein the height of the sludge treatment apparatus is made different. 3. The sludge treatment according to claim 1, wherein the aeration means is provided outside an ultrasonic sound field space composed of an ultrasonic irradiation surface and an ultrasonic reflection surface of the ultrasonic transducer in the first treatment tank. apparatus. The ultrasonic field field and the aeration section provided with the aeration means are separated by a partition plate, and a space is provided between a lower end of the partition plate and a bottom portion of the first treatment tank. The sludge treatment apparatus described in 1. The sludge treatment apparatus according to claim 1 or 2, wherein an upper end surface of the weir is a convex curved surface. The sludge guide plate connecting the upper end surface of the weir and the bottom surface of the second treatment tank is provided in the second treatment tank, and an angle between the sludge guide plate and the weir is 0 degree or more and 45 degrees or less. The sludge treatment according to 1 or 2. The sludge treatment apparatus according to claim 1 or 2, wherein a hydrophobic surface treatment is applied to an inner wall of the second treatment tank. The sludge treatment apparatus according to claim 1 or 2, wherein a lid is provided at an upper part of the ultrasonic treatment tank, and defoamed water is ejected from the lower part of the lid. The sludge treatment apparatus according to claim 1 or 2, further comprising means for vibrating the liquid level in the first treatment tank. 3. The sludge treatment apparatus according to claim 1, further comprising means for sweeping liquid surface floating matter in the first treatment tank from the first treatment tank to the second treatment tank. 4. . 3. The sludge according to claim 1, further comprising a blowing unit that pushes the liquid surface suspended matter in the first treatment tank from the first treatment tank to the second treatment tank by wind pressure. 4. Processing equipment.

Images