JP2007117896A - Apparatus and method for treating muddy water - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus and a method for treating muddy water capable of separating mud of the low moisture content from muddy water, and bagging the separated mud to facilitate conveyance of the bagged mud as it is. <P>SOLUTION: The apparatus for treating muddy water is provided with: an agitation/conveyance part 14 in which the mud 6 from an apparatus 11 for separating muddy water is agitated while being conveyed; a stabilizing material supply part 15 for supplying a stabilizing material 12 to the mud 6 being conveyed by the agitation/conveyance part 14; a moisture absorbing material supply part 16 for supplying a moisture absorbing material 13 to the mud 6 being conveyed by the agitation/conveyance part 14; and a bagging part 61 for bagging the mud 6 agitated/conveyed by the agitation/conveyance part 14. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a muddy water treatment apparatus and a muddy water treatment method for treating and bagging muddy water discharged in a manufacturing process of concrete aggregate.

  In the production of crushed sand used as an aggregate for concrete, crushed sand obtained by appropriately crushing raw sand such as gravel and crushed stone is washed with water, and then crushed sand is taken out. In this process, the water after washing the crushed sand is discharged as a large amount of muddy water. Such muddy water must be disposed of in an appropriate place, but it is difficult to find a suitable disposal place in consideration of the influence on the surrounding environment. In addition, when the disposal site is far away, a large amount of muddy water must be transported by a truck or the like, and the transportation cost becomes enormous.

  Therefore, in order to facilitate the transport of such mud water, an apparatus is known in which only the mud is solidified by separating the mud from the mud and removing the water by pressurization or the like. However, the mud taken out by such a device is only dehydrated and hardened by pressurization, etc., and if it contains moisture, it will melt and flow immediately. It became difficult and the surrounding environment could be adversely affected.

  In order to solve such a problem, the present applicant has already disclosed the muddy water treatment apparatus described in Japanese Patent No. 2909585. As shown in FIG. 14, the mud treatment apparatus 101 further includes a stirring tank 104 for injecting a flocculant 103 into the mud water 102 and stirring and mixing, and further agglomeration reaction while the mud water 102 discharged from the stirring tank 104 is conveyed. A mesh drum 105 made of a separation screen for separating the mud 106 from the mud water 102 that has passed through the coalescing drum 105, and a predetermined interval on the outer peripheral side of the mesh drum 107. The solid-liquid separation drum 109 having a double structure comprising an outer drum 108 that collects and discharges the water that has passed through the mesh drum, and the outer drum that conveys the mud 106 separated by the solid-liquid separation drum 109 110 and the stone powder 111 disposed in the outer drum 108 and supplied from the stone powder production apparatus 115 are sieved and supplied to the mud 106 being conveyed. A stone powder mixing drum 113 having a double structure consisting of a mesh drum 112. made by fractional screen for the agglomerated drum 105, but having a drive unit 114 for rotating the solid-liquid separation drum 109 and stone powder mixing drum 113.

  According to the mud treatment apparatus 101, the mud 106 is separated and removed from the mud 102, and the stone powder 111 is supplied to form a layer of the stone powder 111 on the surface of the mud 106. Even if it contains the water | moisture content, it can take out as a solid substance which does not melt | dissolve easily and flow out. Therefore, it can be easily transported by loading it on a truck, etc., and even if it is left outdoors and it rains, it melts and flows out, making it difficult to transport and polluting the surrounding environment. There is nothing to do.

However, since the conventional mud treatment apparatus 101 separates the mud 106 from the mud 102 only by passing through the mesh drum 107 formed of a rotating cylindrical separation screen, The ratio is low, and the ratio of moisture contained in the separated mud 106 is high. Therefore, in order to absorb the water | moisture content contained in the mud part 106, there existed a problem that a lot of stone powder 111 was required, and also a long time was required for drying and hardening of the taken out mud part 106. The conventional mud treatment apparatus 101 hardens the mud 106 separated from the mud 102 to such an extent that it is not easily dissolved by moisture such as rain, and it is weathered and returns to the original mud in the long term. For this reason, it cannot be reused as roadbed material or embankment, and must be treated as industrial waste.
Therefore, a muddy water treatment apparatus and a muddy water treatment method that can separate a muddy component having a low moisture content from the muddy water, and can permanently solidify the separated muddy component and reuse it for roadbed materials, etc. Proposed (for example, Patent Document 1).
Japanese Patent No. 3433250

  However, in this muddy water treatment apparatus and muddy water treatment method, the produced muddy matter is piled up in a stock yard and solidified. When this is used, it is crushed by a crusher and the particle size is stabilized to 5 mm or less. There is a problem that must be treated fine crushed powder.

Specific means for solving the above technical problems are as follows. That is, the muddy water treatment apparatus according to claim 1 includes a cylindrical main body that is rotationally driven in a circumferential direction, a supply port that supplies muddy water mixed with a flocculant, and an inner peripheral surface of the main body from the rotation center of the main body. A plurality of screens that are arranged radially, and that rotate with the rotation of the main body, separates the mud from the mud, a discharge port for discharging the water in the mud, and collects the separated mud A muddy water separator having a discharge part for discharging to the outside of the muddy water, an agitating and conveying part for agitating while conveying mud from the muddy water separating apparatus, and a stabilizer and a hygroscopic material for the mud being conveyed by the agitating and conveying part The present invention has a stabilizing material supply unit and a hygroscopic material supply unit to be supplied, and a bagging unit for bagging the mud that has been stirred and conveyed by the stirring and conveying unit.

In the muddy water treatment method according to claim 2, after the flocculant is mixed and stirred in the muddy water, the mud content in the muddy water is coagulated and precipitated in a cylindrical main body that is rotationally driven in the circumferential direction. A plurality of radial arrangements from the center of rotation to the inner peripheral surface of the main body, and the mud content is scooped up and separated from the muddy water by a separation screen that rotates as the main body rotates, and a stabilizer and a hygroscopic agent are separated into the separated mud content. The solution is to stir and feed the bag.

  According to the muddy water treatment apparatus and the muddy water treatment method of the present invention, a plurality of radial arrangements are made from the rotation center of the cylindrical main body to the inner peripheral surface of the main body, and the muddy water is rotated by the rotation of the main body. By providing the separation screen for separating the mud, the moisture is screened down by the separation screen while lifting the mud upward, so that the mud with a low moisture content can be separated from the mud.

Furthermore, an agitation conveyance unit that agitates while conveying mud from the muddy water separator, and a stabilizer supply unit and a hygroscopic material supply unit that supply a stabilizer and a hygroscopic material to the mud being conveyed by the agitation conveyance unit. By having it, the mud separated from the muddy water in the muddy water separator can be solidified efficiently and automatically, and the muddy water can be treated. Further, since the mud taken out by the agitating and conveying unit is packed in a bag at the end of the conveying end, it can be loaded on the truck bed as it is and conveyed to the destination. Therefore, the loading operation is significantly improved. It is convenient to load a bag on the loading platform because a truck with a UNIC can be loaded by itself. Of course, it may be loaded using a simple crane or the like, and its means is not limited.
As a use application of the mud thus packed in a bag, a reclaimed crusher run on the RC road surface is suitable.

  Hereinafter, a muddy water treatment apparatus according to the present invention will be described with reference to the drawings. As shown in FIG. 1, a muddy water treatment apparatus 1 according to an embodiment of the present invention is provided with a cylindrical main body 2 that is rotationally driven in a circumferential direction, and one end side of the main body 2, and a flocculant 60 is mixed therein. From the supply port 4 for supplying the muddy water 3 to the inside of the main body 2, a plurality of radial arrangements from the rotation center C of the main body 2 to the inner peripheral surface 5 of the main body 2, and rotating with the rotation of the main body 2 A separation screen 7 for separating the mud 6 from the mud 3, a discharge port 9 provided on the other end side of the main body 2 for discharging the water 8 in the mud 3, and a rotation center C of the main body 2. A muddy water separator 11 provided with a discharge unit 10 that is disposed and collects the mud 6 separated on the separation screen 7 and discharges it to the outside of the main body 2, and the discharge unit 10 of the muddy water separator 11 continuously. The stabilizer 12 and the hygroscopic material 1 are provided while carrying the mud 6 An agitating and conveying unit 14 for agitating, a stabilizing material supplying unit 15 for supplying the stabilizing material 12 to the mud 6 being conveyed in the agitating and conveying unit 14, and a hygroscopic material for the mud 6 being conveyed in the agitating and conveying unit 14 13 and a bagging portion 61 provided at the front end of a transporting device 69 that transports continuously with the stirring and transporting portion 14. This will be described in more detail below.

  First, the muddy water separator 11 will be described in detail. As shown in FIGS. 2 and 3, the main body 2 of the muddy water separator 11 is formed in a cylindrical shape, and is supported by a support portion 17 so as to be rotatable in the circumferential direction. Here, a pair of support portions 17 are disposed on each of one end side and the other end side in the longitudinal direction of the main body 2, and a pair of support rollers 20 provided rotatably via a support base 18 and a support shaft 19, respectively. It is comprised. A fitting groove 21 is formed on the outer periphery of the support roller 20, and the main body 2 is viewed from both sides by being rotatably engaged with two annular protrusions 23 formed on the outer peripheral surface 22 of the main body 2. While supporting rotatably, the movement of the main body 2 in the axial direction is restricted. Here, the fitting groove 21 of the support roller 20 and the annular protrusion 23 of the outer peripheral surface 22 of the main body 2 are each formed in a U-shaped cross section.

  A driven sprocket 24 is provided on the outer peripheral surface 22 of the main body 2. A drive sprocket 26 is mounted on the output shaft of a motor 25 for rotationally driving the main body 2 in the circumferential direction. The drive sprocket 26 and the driven sprocket 24 are connected by a chain 27. The main body 2 is rotationally driven in the direction of arrow R via

  As shown in FIGS. 3 and 4, the supply port 4 is a circular opening provided around the rotation center C of the main body 2 on one end side of the main body 2, and the flocculant is provided via the supply port 4. The muddy water 3 mixed with 60 is supplied into the main body 2. The diameter D1 of the supply port 4 is formed smaller than the diameter D2 of the main body 2. For example, in this embodiment, the diameter D2 of the main body 2 is 2200 mm, and the diameter D1 of the supply port 4 is 700 mm. An inclined portion 28 having a gentle inclination is formed in a portion from the supply port 4 to the main body 2. It is preferable to form the inclination angle θ of the inclined portion 28 to be about 5 to 10 °. Further, the length L of the inclined portion 28 needs to have a sufficient length to promote the coagulation action of the muddy water 3 in which the coagulant is mixed, and it is preferable to secure a length of about 2000 to 3000 mm. It is. As a result, the muddy water 3 supplied from the supply port 4 is sufficiently agitated while moving through the inclined portion 28, so that it reaches the main body 2 in a state where the coagulation action is almost completed. Then, the muddy water 3 that has reached the main body 2 is separated into the mud 6 and the moisture 8 inside the main body 2, and the mud 6 has a high specific gravity, and thus settles in the lower part of the main body 2. Further, a stepped portion 29 is formed at the connecting portion between the inclined portion 28 and the main body 2. The step portion 29 is formed such that its height H1 is equal to or higher than the height H2 of the mud 6 deposited at the lower portion of the main body 2, and the sedimented mud 6 returns toward the inclined portion 28. It works to prevent this. In this embodiment, since the height H2 of the mud 6 is assumed to be around 100 mm, the height H1 of the stepped portion 29 is 150 mm.

  As shown in FIG. 1, the muddy water 3 in which the flocculant 60 supplied from the supply port 4 is mixed is obtained by adding the flocculant 60 into the muddy water 3 in advance in the stirring water tank 63 and stirring it. The agitation water tank 63 has a double structure having an external agitation tank 64 and an internal agitation tank 65. After the mud water 3 and the flocculant 60 supplied to the internal agitation tank 65 are agitated by the agitation blade 66, After being sent to the external stirring tank 64 from the opening provided in the lower part of the internal stirring tank 65, it is sent to the supply port 4. As the flocculant 60, for example, water-soluble polymer flocculants such as cationic, nonionic, and anionic can be used.

  As shown in FIG. 5, which is a cross-sectional view taken along the line AA in FIGS. 4 and 4, a plurality of the separation screens 7 are arranged radially from the rotation center C of the main body 2 to the inner peripheral surface 5 of the main body 2. Specifically, the separation screen 7 is divided into three rows, a first row 30 on the supply port 4 side, a second row 31 in the center, and a third row 32 on the discharge port 9 side. 30, three separation screens 7 are disposed in the second row 31 and the third row 32, respectively. Here, the reason why the number of the separation screens 7 in the first row 30 is set to six is that the first row 30 is a portion for scooping up the mud 6 from the mud water 3 supplied from the supply port 4 first. This is because it is preferable that the number of separation screens 7 be large so that 6 can be scooped up efficiently. On the other hand, the reason why the number of separation screens 7 in the second row 31 and the third row 32 is three is that most of the mud 6 has already been scooped up by the separation screen 7 in the first row 30, This is because the number of separation screens 7 in the first row 30 is not necessary to scoop up 6.

  The separation screens 7 in each row are fixed to a support frame 34 arranged so that the center side end portion 33 surrounds the periphery of the discharge portion 10 arranged at the rotation center C of the main body 2, and the outer peripheral side end thereof. The portion 35 is fixed to the inner peripheral surface 5 of the main body 2 so as to be arranged radially from the rotation center C to the outside. Here, the support frame 34 includes a hexagonal end frame 38 disposed in the vicinity of the supply port side end 36 and the discharge port side end 37 of the discharge unit 10 inside the main body 2, and the end frame. Each side of 38 has six straight L-shaped frames 39 arranged so as to connect the end frames 38 on both sides, and the end frames 38 on both sides are supported. The shaft 40 is fixed and supported with respect to the inner peripheral surface 5 of the main body 2.

  As shown in FIG. 6, the separation screen 7 includes a screen main body 41 made of a sieve screen, a side plate 42 and a connecting shaft 43 for fixing the screen main body 41 in a predetermined position while maintaining the predetermined shape. It is configured. The screen main body 41 is provided continuously with a first surface 44 disposed in parallel to the radial direction of the main body 2, and radially outward of the first surface 44, and the main body 41 with respect to the first surface 44. And a second surface 45 inclined in the rotational direction R. It is preferable that the inclination angle γ of the second surface 45 with respect to the first surface 44 is about 45 to 60 °. As for the opening of the screen main body 41, it is preferable that the first row 30 and the second row 31 have large openings and the third row 32 has a smaller opening. For example, in the present embodiment, the screen bodies 41 in the first row 30 and the second row 31 have a linear size of 0.8 mm and an aperture of about 3 mm, and the screen bodies 41 in the third row 32 have an aperture of 0.3 mm in a linear shape. It is about 1.5 mm. By doing in this way, in the 3rd row | line 32, the small particle size mud 6 which could not be scooped up in the 1st row | line | column 30 and the 2nd row | line | column 31 can also be scooped up.

  The side plate 42 is a flat plate formed in a substantially pentagonal shape, and its center side end 33 is fixed to the support frame 34, and the outer peripheral side end 35 is fixed to the inner peripheral surface of the main body 2. Both end portions of the screen main body 41 are attached to the inner side surface. The connecting shaft 43 is a rod-like member that connects the side plates 42 on both sides, fixes the side plates 42 at a predetermined interval, and is also arranged on the back side of the screen body 41 to add the mud 6 added when scooping up the mud 6. Also plays a role in supporting the weight of the.

  The separation screen 7 rotates integrally with the main body 2 along with the rotation of the main body 2 to scoop up the mud 6 that has settled in the lower part inside the main body 2 and separate the mud 6 from the mud water 3. . Therefore, the operation when the separation screen 7 scoops up the mud 6 from the mud 3 will be described. As shown in FIG. 7 which is a BB cross-sectional view of FIG. 4, in the inside of the main body 2, the mud water 3 is substantially separated into the mud 6 and the water 8, and the mud 6 is in the lower part of the main body 2. It is in a precipitated state. The separation screen 7 rotates in the R direction with the rotation of the main body 2 and scoops up the mud 6 deposited on the lower portion of the main body 2 near the position P1 by the second surface 45 on the outer side in the radial direction. . Thereafter, the separation screen 7 is lifted while rotating as it is, and the mud 6 is lifted from the water surface 46 in the vicinity of the position P2 and separated from the mud 3. At this time, excess water 8 contained in the mud 6 falls downward from the separation screen 7. Thereafter, in the vicinity of the position P <b> 3 above the water surface 46, the mud 6 that has been on the second surface 45 moves and falls onto the first surface 44. As described above, since the second surface 45 is inclined in the rotation direction R of the main body 2 with respect to the first surface 44, the inclination angle of the second surface 45 is near the position of the first surface 44 near the position P3. This is because it becomes larger than the inclination angle. At this time, the moisture 8 contained in the mud 6 is further screened down from the separation screen 7 due to an impact caused by the fall on the first surface 44, and the moisture 8 contained in the mud 6 is removed. The ratio can be further reduced. Thereafter, in the vicinity of the position P <b> 4 almost directly above the discharge unit 10, the mud 6 falls downward and is collected by the discharge unit 10. Such an operation is similarly performed on the separation screens 7 in the first row 30, the second row 31, and the third row 32, respectively.

  As shown in FIGS. 4 and 8, the discharge port 9 is a circular opening provided around the rotation center C of the main body 2 with respect to the end wall 47 on the other end side of the main body 2. A protrusion 48 inclined to the side is provided, and the moisture 8 in the muddy water 3 is discharged from the inside of the main body 2 to the outside through the discharge port 9. The height H3 of the end wall 47 that forms a step between the inner peripheral surface 5 of the main body 2 and the discharge port 9 is sufficiently higher than the height H2 of the mud 6 that has settled at the lower portion of the main body 2, and muddy water. It forms so that it may become a little lower than the water level H4 of the muddy water 3 inside the main body 2 during the operation of the separator 11. In this embodiment, since the water level H4 of the muddy water 3 is assumed to be around 700 mm, the height H3 of the end wall 47 is set to 550 mm. As a result, only the supernatant water 8 after the mud 6 has settled downward from the mud 3 is discharged from the outlet 9 to the outside.

  As shown in FIGS. 4 and 5, the discharge unit 10 is disposed in the vicinity of the rotation center C of the main body 2, collects the mud 6 separated in the separation screen 7, and discharges it to the outside of the main body 2. It is the conveying apparatus for. Therefore, in the present embodiment, the discharge unit 10 includes a collar 49 having a lower part formed in a semicircular shape and a screw-shaped feed blade 50 disposed in the collar 49, and the feed blade 50 is rotated. The screw conveyor which pushes the mud 6 along the screw surface by using is used. The upper portion of the ridge 49 is expanded in the width direction to form a wide upper opening 51 so that the mud 6 falling from the separation screen 7 can be reliably recovered. The discharge unit 10 is provided so as to convey the mud 6 from the discharge port 9 to the outside of the main body 2. Here, if it is set as the structure which collects the mud 6 in the place where the discharge part 10 went out of the main body 2, the muddy water separator 11 can be used as a single body.

  Next, parts other than the muddy water separator 11 of the muddy water treatment apparatus 1 will be described. As shown in FIG. 1, the agitating and conveying unit 14 is provided continuously to the discharge unit 10 of the muddy water separator 11, and includes a stabilizer 12 and a stabilizer 12 supplied in a stabilizer supply unit 15 and a moisture absorbent supply unit 16 to be described later. This is a transport device that transports the mud 6 while stirring with the hygroscopic material 13. Therefore, in the present embodiment, the agitating and conveying unit 14 is provided integrally and continuously with the discharge unit 10 by extending the length of the screw conveyor constituting the discharge unit 10 of the muddy water separator 11. . That is, the agitating and conveying unit 14, similar to the discharge unit 10, has a bowl 49 in which a lower part is formed in a semicircular shape and an upper part is expanded in the width direction to form a wide upper opening 51. 49, and a screw conveyor provided with a screw-like feed blade 50 that is arranged and rotated. For this reason, the mud 6 conveyed in the agitating and conveying unit 14 is pushed forward while rotating in the rod 49 by the feed blade 50, and is appropriately stirred while being conveyed. Therefore, as will be described later, if the stabilizer 12 and the hygroscopic material 13 are supplied from the stabilizing material supply unit 15 and the hygroscopic material supply unit 16 to the mud 6 being conveyed in the stirring and conveying unit 14, the mud 6 and the stabilizing material are obtained. 12 and the hygroscopic material 13 are agitated, and the mud 6, the stabilizer 12 and the hygroscopic material 13 are discharged in a mixed state at the terminal portion 52 of the agitating and conveying unit 14.

  In addition, it is also possible to make the stirring conveyance part 14 a structure different from the discharge part 10 of the muddy water separator 11. In this case, although not shown, for example, the discharge unit 10 is a normal belt conveyor, the stirring and conveying unit 14 is a screw conveyor, and the starting end of the stirring and conveying unit 14 is arranged at a position one step lower than the terminal end of the discharging unit 10 to discharge. It is also possible to adopt a configuration in which the mud 6 that has fallen from the section 10 is received by the gutter 49 of the stirring and conveying section 14 and continuously conveyed. Furthermore, the conveyance unit and the agitation unit may be divided to stir the conveyed mud 6, the stabilizer 12 and the hygroscopic material 13 at a time. These are all included in the range of the stirring and conveying unit 14.

  As shown in FIG. 9, the stabilizing material supply unit 15 supplies a stabilizing material 12 to the mud 6 being conveyed by introducing an appropriate amount of the stabilizing material 12 from above into the stirring and conveying unit 14. It is. Specifically, the stabilizer supply unit 15 includes a silo body 53 in which the stabilizer 12 is accommodated, and a transport pipe 54 that transports the stabilizer 12 from the silo body 53 to a predetermined position above the stirring transport unit 14. And a feeder 55 for quantitatively supplying the stabilizer 12 delivered from the conveying pipe 54 to the agitating / conveying unit 14. Here, the provision of the feeder 55 has the following advantages. That is, the stabilizer 12 needs to be mixed at a constant ratio with respect to the mud 6, but the amount of the stabilizer 12 delivered from the transport pipe 54 is not constant. By supplying upward, the fluctuation | variation of the quantity of the stabilizer 12 sent out from the conveyance pipe 54 can be absorbed, and the appropriate quantity of stabilizer 12 with respect to the mud 6 can always be supplied in a fixed ratio.

  Here, as the stabilizer 12, various cements such as Portland cement and blast furnace cement, cement stabilizer, quicklime, lime stabilizer and the like can be used. Among these, if quicklime or lime-based stabilizer is used, it matches the material standard of the hydraulic composite roadbed material, and the mud 6 after being processed in the mud treatment apparatus 1 according to the present invention is used as the hydraulic composite roadbed material. This is preferable because it can be reused. Moreover, when using the stabilizer 12 containing cement components, such as cement and a cement-type stabilizer, the mud 6 after processing in the mud treatment apparatus 1 according to the present invention is reused for embankment or backfilling. In order to prevent the hexavalent chromium from eluting into the soil, it is preferable to use the stabilizer 12 with little hexavalent chromium elution.

  The hygroscopic material supply unit 16 is a supply device that supplies the hygroscopic material 13 to the mud 6 being conveyed by putting an appropriate amount of the hygroscopic material 13 into the stirring and conveying unit 14 from above. Specifically, the hygroscopic material supply unit 16 includes a silo body 53 in which the hygroscopic material 13 is accommodated, and a transport pipe 54 that transports the hygroscopic material 13 from the silo body 53 to a predetermined position above the agitation transport unit 14. It is comprised. In the present embodiment, three such hygroscopic material supply units 16 are arranged adjacent to each other. By arranging the three hygroscopic material supply parts 16 in this way, the amount of the hygroscopic material 13 supplied can be appropriately adjusted in accordance with the moisture content of the mud 6 being conveyed in the agitating and conveying part 14. Become. The feeder 55 is not provided unlike the stabilizing material supply unit 15 because the hygroscopic material 13 is mixed in a large amount with the mud 6 unlike the stabilizing material 12. This is because it is not a problem.

  As the moisture absorbent material 13, here, stone powder is used. Stone powder is obtained by finely pulverizing rocks into a powder form, and is used in a dry state. By mixing such dried stone powder into the mud 6, the moisture contained in the mud 6 can be absorbed and the entire water content ratio can be reduced. In order to produce stone powder, it is preferable to use, for example, the “crushed sand production apparatus for concrete” disclosed in Japanese Patent Publication No. 7-75674 or Japanese Patent Publication No. 7-75675 already disclosed by the present applicant. As the hygroscopic material 13, it is possible to use a material other than stone powder, for example, a plant fiber solidified in a pellet form or a water supply polymer, but stone powder is most suitable for use as a roadbed material. is there.

The supply amount of the stabilizer 12 and the moisture absorbent 13 with respect to the mud 6 is specifically as follows. That is, assuming that the mud 6 discharged from the mud separator 11 is “100”, the stabilizer 12 is supplied at a rate of “5” and the hygroscopic material 13 is supplied at a rate of “20”. For example, in the present embodiment, the mud content 6 “100 g” at the time when it is discharged from the mud water separator 11 includes “33 g” having a water content of about 1/3, and the water content is 49. 3%. On the other hand, when “5 g” of the stabilizer 12 and “20 g” of the hygroscopic material 13 are added, the moisture content becomes 35.8%, and the moisture content suitable for solidification by the stabilizer 12 is obtained. The water content ratio is a value obtained by dividing the mass of water by the mass of solids other than water. By doing so, a large amount of mud 6 can be solidified with a small amount of the stabilizer 12.

  The bagging unit 61 is provided continuously to the stirring and conveying unit 14 and packs the mud 6 after stirring. Specifically, as shown in FIGS. 9 and 10, the bagging portion 61 is partitioned by a bag support frame 70 that is radially arranged around the end portion 52 of the stirring and conveying portion 14 and is arranged in a fan shape. It has a bag storage 71, a transfer device 69 that is connected to the terminal end 52 of the agitation transport unit 14 and the bag storage 71 and transports the mud 6 discharged from the agitation transport unit 14 to the bag storage 71. Composed. Here, a screw conveyor provided with a flange 67 whose lower part is formed in a semicircular shape and a screw-shaped feed blade 68 disposed and rotated in the flange 67 is used as the conveying device 69. The transfer device 69 has a start end 72 disposed below the terminal end 52 of the stirring transfer unit 14 and is supported so as to be rotatable on a horizontal plane around a rotation shaft 73 provided below the start end 72. Therefore, the transfer device 69 is rotated to move the end portion 74 thereof above the bag storage area 71, thereby opening the mud 6 discharged from the agitation conveyance section 14 into the bag support frame 70 of the bag storage area 71. It is possible to convey the bag F that is hooked and supported. In addition, the conveyance apparatus 69 is not limited to the said screw conveyor, For example, it is also possible to use other conveyance apparatuses, such as a belt conveyor.

In addition, a support roller 75 is provided in the lower part of the conveying device 69 in the vicinity of the center in the length direction, and the support roller 75 is placed on the upper surface of the arcuate wall 76 that constitutes the end wall of the bag storage area 71. The transfer device 69 is supported so as to be movable. Further, here, the conveying device 69 is automatically rotated by rotating the support roller 75 by a motor or the like, and the end portion 74 is located above the bag F that is supported by the bag support frame 70 of each bag storage area 71. Can be moved to. As a result, a large number of bags F can be arranged in the bag storage 71, so that even when the transport amount from the transport device 69 is large, the transport device 69 can be rotated sequentially to pack the bags from the bag F to the bags F. . However, when the transport amount is not so large, the installation of the transport device 69 is stopped, and the bagging portion 61 is provided at the end portion 74 of the stirring and transporting portion 14 so as to pack the bags one by one until the bag is full. May be.
In addition, you may make it provide the bagging part 61 in the terminal part 52 of the stirring conveyance part 14 without using this conveying apparatus 69. FIG. Although not shown, it is preferable to provide a roof or the like above the bagging portion 61 so that the mud 6 is not exposed to rain.

  As shown in FIG. 1, the mud 6 packed as described above can be placed on the loading platform of the truck T by using a UNIC U or the like, and can be directly transported to the destination by the truck T. . As an example of such use of the mud 6 packed in the bag F, it can be effectively used for an RC road surface regeneration crusher run or the like.

It is sectional drawing which shows the muddy water processing apparatus which concerns on embodiment of this invention. It is a front view which shows the muddy water separator which concerns on embodiment of this invention. It is a left view which shows the muddy water separation apparatus which concerns on embodiment of this invention. It is sectional drawing which shows the muddy water separation apparatus which concerns on embodiment of this invention. It is AA sectional drawing of FIG. It is a perspective view which shows the separation screen of the muddy water separation apparatus which concerns on embodiment of this invention. It is BB sectional drawing of FIG. 4 which shows the use condition of a muddy water separator. It is a right view which shows the muddy water separation apparatus which concerns on embodiment of this invention. It is a front view which shows parts other than a muddy water separator among the muddy water processing apparatuses which concern on embodiment of this invention. It is a top view which shows the bagging part of the muddy water processing apparatus which concerns on embodiment of this invention. It is sectional drawing which shows the muddy water processing apparatus which concerns on a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Muddy water processing apparatus 2 Main body of muddy water separator 3 Muddy water 4 Supply port 6 Mud part 7 Separation screen 8 Moisture 9 Drain port 10 Discharge part 11 Mud water separator 12 Stabilizer 13 Hygroscopic material 14 Stirring conveyance part 15 Stabilizer supply part 16 Hygroscopic Material supply section 17 Support section 28 Inclination section 34 Support frame 41 Screen main body 44 First surface of screen main body 45 Second surface of screen main body 56 Conveying section 58 Stirring section 61 Bagging section 63 Stirring water tank 69 Conveying device 71 Bag storage place C Mud water Center of rotation of the main body of the separator R Direction of rotation of the main body of the muddy water separator

Claims (2)

A cylindrical main body that is rotationally driven in the circumferential direction, a supply port that supplies muddy water mixed with a flocculant, and a plurality of radial arrangements from the center of rotation of the main body to the inner peripheral surface of the main body. A muddy water separator comprising a separation screen that separates mud from the muddy water by rotating, a discharge port that discharges moisture in the muddy water, and a discharge unit that collects the separated muddy water and discharges it to the outside of the main body. A stirring and conveying unit that stirs while conveying mud from the muddy water separator, a stabilizer and a hygroscopic material supplying unit that supplies a stabilizer and a hygroscopic material to the mud being conveyed by the agitating and conveying unit, A muddy water treatment apparatus comprising a bagging unit for bagging the mud stirred and conveyed by the agitation conveyance unit. After mixing and aggregating the flocculant in the muddy water, the mud in the muddy water is coagulated and settled in a cylindrical body that is driven to rotate in the circumferential direction, and then radially from the center of rotation of the main body to the inner peripheral surface of the main body. The muddy component is scooped up and separated from the muddy water by a separation screen that rotates as the main body rotates, and a stabilizer and a hygroscopic agent are supplied to the separated muddy component and stirred. A muddy water treatment method characterized by:

Images