JP4964083B2 - Mud processing equipment - Google Patents

Description

  The present invention relates to a muddy substance treatment apparatus that dehydrates muddy substance containing moisture such as floc obtained by agglomeration reaction of muddy water and sludge or flocculated water and sludge in a bag.

  2. Description of the Related Art There is known a muddy material processing apparatus that dewaters a muddy material by storing it in a water-permeable bag and suspending it. For example, Patent Document 1 discloses that a sufficient amount of sludge is stored in a sludge dewatering bag composed of an inner bag made of nonwoven fabric and an outer bag of a coarse net, thereby dewatering depending on the gravity of the sludge and the pressure that the bag naturally applies. A sludge dewatering apparatus is described.

Registered Utility Model No. 3013645

  However, in the conventional sludge treatment device, the water that exudes from the peripheral surface of the bag body can be removed only at a speed that dripping due to the gravity of the sludge and the pressure that the bag naturally applies. It takes a considerable amount of time for the contained water to drain.

  This is because moisture located just inside the peripheral surface of the bag body is discharged so as to ooze out from the bag body, but moisture located near the center of the stored sludge gradually moves toward the bottom surface. This is because it takes time.

  In such a sludge treatment device that suspends and dewaters such a bag body, no power is required, so it is simpler than the one that dewaters in a short time by pressurizing or rotating the sludge from the upper surface. Can be structured. Therefore, the scale of the apparatus can be reduced and the cost is low. On the other hand, as described above, dehydration takes time.

  Then, an object of this invention is to provide the mud processing apparatus which can shorten the dehydration time of the water | moisture content contained in a mud.

  The sludge treatment apparatus of the present invention is disposed in a water-permeable bag main body that allows only water to pass through from a mud containing water, and in the bag main body, in a standing state when in use, and on the peripheral surface. Is provided with a drain pipe having a water passage hole and a belt for suspending the bag body.

  In the mud treatment apparatus of the present invention, the bag body is formed of a water-permeable material that allows only moisture to pass from the mud containing water. The bag body is suspended by a belt in a state where mud is stored. When the bag main body is suspended, the side of the bag main body tightens the mud by pulling the bag main body downward due to its own weight. This tightening removes moisture so as to ooze out from the peripheral surface of the bag body. Further, by this tightening, the mud is pressed against a drain pipe arranged in a standing state in the bag body. Since the drainage pipe is provided with a water passage hole on the peripheral surface, the moisture contained in the mud enters the drainage pipe through the water passage hole and is discharged from the lower end through the drain pipe. Therefore, the mud located near the center of the bag body can also be dehydrated from the drain pipe.

  By providing a drainage hole in the bottom surface of the bag body so as to correspond to the bottom hole of the drainage pipe, water flowing along the inner surface of the drainage pipe can be quickly drained from the bag body. .

  If an inner bag is provided that wraps the drain pipe from the upper end and the peripheral edge of the opening is connected to the drain hole, mud is stored between the bag body and the inner bag. Since the mud is not only pressed from the side of the bag body, but also pressed by the inner bag, the dehydration time can be further shortened.

  The belt is preferably formed so as to extend from an upper portion of the bag body and hold a bottom surface from below. When the bag body is suspended, the belt directly tightens the bottom surface together with the side surface of the bag body, so that the mud is strongly pressed from the bag body and strongly pressed against the drain pipe. Therefore, the dehydration time can be further shortened. In addition, this belt can improve the strength of the bag body.

  An opening is provided at the top of the bag body, and a reverse belt is provided on the bottom surface of the bag body to hang the bag body upside down. When this is done, the mud is discharged from the opening at the top of the bag body by hooking the reversing belt on a hook such as a crane and lifting it, so that the mud can be easily taken out.

  When the present invention is in use by hanging the bag body, the mud is pressed against the drain pipe arranged in a standing state in the bag body. It can be made to enter into the drain pipe from the bottom, and can be discharged from the lower end along the drain pipe. Therefore, since the muddy substance located in the vicinity of the center of the bag body can be dehydrated from the drain pipe, it is possible to shorten the dehydration time of the water contained in the muddy substance.

  A mud processing apparatus according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a mud processing apparatus according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the sludge treatment apparatus shown in FIG. 3 is a bottom view of the mud treatment apparatus shown in FIG.

  As shown in FIG. 1 to FIG. 3, the mud treatment apparatus 10 stores mud containing water and leaves it in a suspended state on a hanging frame to perform dehydration. The mud processing apparatus 10 includes a bag body 20, a drain pipe 30, a suspension belt 40, and a reversal belt 50.

The bag body 20 is formed from a mesh-like fabric knitted from polypropylene fibers, and thus has elasticity and water permeability that allows only moisture contained in the mud to pass therethrough. The bag body 20 is formed of a bag main body 21 serving as an outer bag for storing mud and an inner bag 22 disposed in the center of the bag main body 21 so as to wrap the drain pipe 30 from the upper end.
The bag 20 can be made of other materials as long as it has water permeability that allows only moisture contained in the mud to pass through and has strength to withstand the weight when the mud is stored. .

The bag body 21, the upper is formed in a cylindrical shape with a bottom having an opening, it is provided a drain hole 21b in correspondence with the lower end of the tube hole of the drain pipe 30 to the center of the bottom surface 21a. Since the diameter of the drain hole 21b is smaller than the diameter of the drain pipe 30, the drain pipe 30 is prevented from falling off the drain hole 21b. The inner side edge of the inner bag 22 is connected to the drain hole 21 b of the bag body 21.
In the present embodiment, the bag body 21 is formed in a cylindrical shape, but it can also be formed in a rectangular parallelepiped shape or a cubic shape. If the bag body is in the shape of a rectangular parallelepiped or a cube, it can be efficiently transported because it can be placed on the loading platform without any gap when transported on a vehicle.

The drain pipe 30 is made of polyethylene and molded into a cylindrical shape. Since the entire peripheral surface of the drain pipe 30 has a uniform mesh, the mesh functions as the water passage hole 30a. The hole diameter of the water passage hole 30a is large enough to allow the muddy substance to pass through, but since the inner bag 22 wraps the drain pipe 30, only water contained in the muddy substance passes through the water hole 30a. do not do.
The drain pipe 30 may be made of other materials as long as it is made of polyethylene and has a mesh formed on the entire peripheral surface, sufficient strength, and excellent corrosion resistance. Further, the drainage pipe 30 may be a cylinder having a triangular or more polygonal cross section in addition to a cylindrical shape.

  The hanging belt 40 is formed of a rope made of polypropylene or the like, and a first belt 41 and a second belt 42 provided so as to face each other with the drain pipe 30 interposed therebetween, and a first belt provided on the top of the inner bag 22. 3 belts 43.

The first belt 41 and the second belt 42 are each provided so as to extend from the connection portion at the top of the bag body 21 and hold the bottom surface 21a from below, and the two belts cross in a cross shape on the bottom surface 21a side. is doing. Since the 1st belt 41 and the 2nd belt 42 are provided so that the bottom face 21a may be hold | maintained from the bottom, the intensity | strength of the bag main body 21 improves. Therefore, the bag body 21 is prevented from tearing even when heavy mud is stored.
The third belt 43 is provided for the purpose of preventing the drain pipe 30 from falling down when dehydrating. In the present embodiment, the sludge treatment apparatus 10 is substantially suspended by two belts of the first belt 41 and the second belt 42 among the suspension belts 40. In the present embodiment, the sludge treatment apparatus 10 is substantially suspended by the two belts of the first belt 41 and the second belt 42. However, if it can withstand the weight of the sludge, 1 It may be a belt of books. Three or more belts may be used.

  The reversing belt 50 is formed of a rope made of polypropylene or the like. The reversing belt 50 is provided in a ring shape on the bottom surface 21a side of the bag body 21 so that the first belt 41 and the second belt 42 intersecting in a cross shape are positioned inside.

  The usage state of the mud processing apparatus according to the embodiment of the present invention configured as described above will be described based on the drawings. FIG. 4 is a diagram for explaining the procedure of the muddy substance treatment.

  Water taken from rivers and the like is purified at the water purification plant 1, sterilized by chlorine, and distributed to each household. In this water purification plant 1, solid-liquid separation is performed by adding a flocculant to turbid water to cause the turbid components to aggregate and settle. Therefore, the turbid component that becomes turbid in the water to be treated has a negatively charged surface and is dispersed by an electric repulsive force. By adding a flocculant whose main component is polyaluminum chloride (PAC), which is positively charged to these turbid components, the turbid components are agglomerated and settled to precipitate the supernatant water and sludge. And can be separated into solid and liquid.

Next, the solid-liquid separated sludge is stored in a temporary tank or the sludge pond 2. Then, the sludge stored in the waste mud pond 2 is transferred to the reaction tank 4 by the pump 3.
A floc is formed by adding a flocculant (sludge moisture adjusting agent) to the sludge charged into the reaction tank 4 and stirring the sludge. The floc sludge is stored in the mud treatment apparatus 10 and drained.

  Therefore, a plurality of mud treatment devices 10 are suspended from a suspension frame (not shown) temporarily installed in the water purification plant, and flocs are poured into these mud treatment devices 10.

  By storing the flock in the suspended sludge treatment apparatus 10, the bag body 21 tends to spread outward while being pulled downward by the weight of the flock. However, since the bag body 21 is hung by the first belt 41 and the second belt 42 and the outward spread is restricted, the flock is tightened by the bag body 21. Since the bag main body 21 is formed in a cylindrical shape, this tightening is applied without bias to the flock. Further, since the first belt 41 and the second belt 42 are formed so as to extend from the top of the bag body 21 and hold the bottom surface 21a from below, the suspension belt 40 is on the side of the peripheral surface of the bag body 21. Tighten the part directly. Since the bag main body 21 has the water permeability which allows only the moisture contained in the floc to pass through the mud processing apparatus 10, the bag main body 21 does not leak from the bag main body 21 by this tightening. Only the moisture contained in the floc oozes out from the surrounding surface.

Further, by this tightening, the flock is pressed against the drain pipe 30 arranged in a standing state in the bag body 21. Since the drainage pipe 30 is provided with a water passage hole 30a on the peripheral surface, and the drainage pipe 30 is covered with the inner bag 22, only water can pass through the water passage hole 30a. Therefore, the moisture contained in the floc can enter the drain pipe 30 through the water passage hole 30a, and can be discharged from the lower end along the drain pipe 30. Therefore, the drainage hole 21b is provided on the bottom surface of the bag body 21 so as to correspond to the tube hole at the lower end of the drainage pipe 30, so that the water flowing along the inner surface of the drainage pipe 30 can be quickly discharged from the bag body 21. It can be drained.
Furthermore, since the inner bag 22 wraps the drain pipe 30 from the upper end and the peripheral edge of the opening is connected to the drain hole 21b, the mud is stored between the bag body 21 and the inner bag 22. It will be. Accordingly, the mud is not only pressed from the side of the bag body 21, but is also pressed by the inner bag 22, so that the dehydration time can be further shortened.
Thus, since the floc located near the center of the bag body 21 can also be dehydrated from the drain pipe 30, water contained in the flock stored in the bag body 21 can be evenly drained, and the dewatering efficiency can be improved. Can be improved.

  As shown in FIG. 4, the sludge treatment apparatus 10 is left in a suspended state, and after drying is completed, it is sun-dried for about 7 to 10 days while being suspended outdoors. By doing so, the moisture content of the sludge from which the floc has been dehydrated can be further reduced, and the weight can be reduced by about 80% compared to the floc at the time of dehydration.

  Further, during the period when the sun is being dried, the mud is stored in the mud processing apparatus 10, so that foreign matters (garbage, dead leaves, sky, etc.) flying from the outside into the mud processing apparatus 10. In the recycling of dry sludge, the recycling rate can be increased because there are few impurities (100% recycling rate with purified water sludge).

  When the dried sludge is transported to a recycling plant as a final disposal, it can be used as a container for transportation by loading it into a vehicle with a crane or the like in a state where the dried sludge is stored in the sludge treatment apparatus 10. it can. Even if the sludge treatment apparatus 10 is transported in a state in which the dried sludge is stored, the bag main body 21 has a fine mesh shape, so that the stored dried sludge is not scattered outside. Therefore, since the mud processing apparatus 10 can be used as it is as a container for transportation, the labor of transshipment can be reduced.

  When discharging the dried sludge from the sludge treatment apparatus 10, the suspension belt 40 is removed from the crane hook after being lifted from the vehicle by a crane, and the reversing belt 50 is hooked on the hook instead. Then, by raising the hook, the mud treatment apparatus 10 is lifted upside down, so that the dried sludge can be discharged from the opening of the bag body 21. Moreover, the sludge adhering to the inner surface of the bag body 20 can be easily discharged by shaking the arm of the crane up and down.

The sludge that has been evacuated after discharging the sludge dried at the transport destination can be taken back to the site and reused (usually about three times).
Thus, since the muddy substance processing apparatus 10 which concerns on this Embodiment can perform a spin-drying | dehydration process efficiently in a short time, it is a series of processes from the process used as a flock to reusing the muddy substance treatment apparatus 10. The time can be shortened. Accordingly, it is possible to improve the efficiency of the treatment of the mud.

  The bag body 21 and the inner bag 22 can have the same mesh gap. However, depending on the diameter of the water passage holes 30a of the drain pipe 30 and the degree of arrangement density, the fibers of the inner bag 22 may overlap with the mesh of the drain pipe 30 and inhibit water passage. In that case, the inner bag 22 having a coarser mesh and a higher degree of gap than the bag body 21 is employed. By doing so, sufficient dehydration can be performed from the inner bag 22 as well as the peripheral surface of the bag body 21.

  Further, in this embodiment, the inner bag 22 that covers the drain pipe 30 is provided in the bag main body 21, but if the pore diameter of the mesh of the drain pipe 30 can be about the gap of the mesh of the bag main body 21, It is also possible to omit the bag 22. Furthermore, the third belt 43 can be omitted if the drain pipe 30 can be fixed in a standing state within the bag body 21.

  Moreover, in this Embodiment, although the opening of the bag main body 21 is provided in the upper part, you may make it take in and out a mud by providing an opening with a lid in the side part of the bag main body 21. . However, it is desirable to open the entire upper portion of the bag body 21 because the dried mud can be easily discharged simply by turning the mud processing apparatus 10 upside down.

  The sludge treatment apparatus of the present invention is not limited to flocs taken from rivers and separated into solid and liquid, but also various mud such as muddy water at construction sites, sludge aggregated with muddy water, activated sludge from food complexes, etc. Suitable for dehydration of the product.

It is a perspective view which shows the mud processing apparatus which concerns on embodiment of this invention. It is sectional drawing of the mud processing apparatus shown in FIG. It is a bottom view of the mud processing apparatus shown in FIG. It is a figure for demonstrating the procedure of a muddy thing process.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water purification plant 2 Drainage pond 3 Pump 4 Reaction tank 10 Mud processing apparatus 20 Bag body 21 Bag main body 21a Bottom surface 21b Drain hole 22 Inner bag 30 Drain pipe 30a Water hole 40 Suspension belt 41 First belt 42 Second Belt 43 3rd belt 50 Reverse belt

Claims (3)

A water-permeable bag body that allows only moisture to pass from the mud containing moisture,
In the bag body, disposed in a standing state when in use, a drain pipe having a water passage hole formed in the peripheral surface,
A belt for hanging the bag body ;
On the bottom surface of the bag body, a drainage hole provided in correspondence with the lower end of the drainage pipe,
A mud processing apparatus comprising: an inner bag that wraps the drain pipe from an upper end and has a peripheral edge of the opening connected to the drain hole . The belt, the bag top from extending slurry of claim 1 Symbol mounting is formed so as to hold the bottom surface from below the processing apparatus main body. An opening is provided at the top of the bag body,
The bag on the bottom surface of the main body, mud-like material processing apparatus according to claim 1 or 2, wherein reversing belt for hanging the bag body is turned upside down is provided.

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