JP4789151B2 - Waste mud regeneration processing apparatus and processing method - Google Patents

Description

  The present invention relates to a waste mud regeneration treatment apparatus and a treatment method suitable for producing waste mud generated at a construction site or the like from the mud into fluidity improved soil according to target strength and application conditions.

  The waste mud generated at the ground improvement or construction site is discarded as it is, or the waste is dehydrated and removed and treated as industrial waste as a construction residual soil, and the treatment method exemplified in Patent Documents 1 and 2 In some cases, it is used as fluidity-improving soil with increased strength by adding solidification material to the waste mud.

  For example, in the treatment method of Patent Document 1, using a vertical kneading tank for the clay-based residual soil or thawing mud soil, the residual soil and the like are introduced from the upper chute, and a solidifying material such as cement is placed in the kneading tank. The mixture is fed through the stirring shaft and mixed until it reaches the bottom of the tank and processed into a premix material.

  In the processing method of Patent Document 2, a supply pipe is arranged between a muddy water production section and a transport vehicle (placement section), a kneader (static mixer) on the discharge side of the supply pipe, and a front side of the kneader. The muddy water of the muddy water production department is pumped through the supply pipe through the pump, and at the same time, solidified material such as cement is pumped from the introduction section into the pipe, together with the muddy water. While continuously mixing through a kneader, the material is discharged to a transport vehicle (placed portion).

Japanese Patent No. 3150453 Japanese Patent No. 3605709

  By the way, recently, in order to actively use construction sludge (including waste mud) as improved soil, the Ministry of Land, Infrastructure, Transport and Tourism has proposed construction sludge treatment soil use technical standards that stipulate strict quality categories. In addition, there is a demand for a reproduction processing configuration that can satisfy the criteria more efficiently. This is because, for example, the conventional configuration as in Patent Documents 1 and 2 causes the following problems in satisfying the above criteria.

  That is, in the configuration of Patent Documents 1 and 2, it is difficult to maintain a stable operation because the vertical kneading tank is mixed with a stirring blade that is rotationally driven or continuously mixed with a kneader connected to a supply pipe, In addition, when the amount of treatment increases, the quality of the improved soil produced tends to vary. Assuming that the waste mud to be treated is generated by ground improvement accompanied by pile construction, the waste mud generated during intrusion has a large amount of moisture, and the waste mud produced during pile construction is an additive such as cement. The viscosity of the waste mud is often greatly different, and there are many cases where stones and galley are scattered in the waste mud, and the mixing mechanism such as a stirring blade or static mixer is used. This is because they tend to break down, have difficulty in maintenance, and the operating rate also deteriorates.

  The object of the present invention is to solve the above-mentioned problems and to perform water separation with a simpler mechanism in a state where the waste mud is placed in the tank, and to improve the fluidity according to the target strength and application conditions. It is possible to provide a sludge regeneration processing apparatus and a processing method in which the possibility of failure can be eliminated by simplifying the mechanism.

  In order to achieve the above object, the present invention according to claim 1 includes a mixing tank and a backhoe that are open at the top, and can remove muddy water by separating muddy water from the muddy water thrown into the mixing tank. In the waste mud regeneration processing apparatus that mixes waste mud and additive in the tank from outside the mixing tank by operation via the backhoe, the mixing tank is divided into a first tank and a second tank. In addition, the partition portion is formed in a curved shape from the bottom surface in each tank, and the curved top portions are joined to each other.

  In the above-mentioned present invention, “exhaust mud” is a muddy substance that can be separated into a muddy water side having a small specific gravity and a mud side having a large specific gravity by natural sedimentation, and technical standards for construction sludge treatment soil utilization (Ministry of Land, Infrastructure, Transport and Tourism) Including “construction sludge” as stipulated in. Further, it is a matter of course that mud and muddy water include sand, pebbles, and glass in addition to soil and water in a common sense.

The above-described waste mud regeneration processing apparatus of the present invention is more preferably embodied as follows.
(A) The first tank and the second tank, which are attached to both inner sides of the mixing tank, project along the top of the partition part, and through a gap between the projecting ends facing each other. The left and right elastic plates communicate with each other (Claim 2).
(B) A scattering prevention plate that joins an overhanging flange portion protruding from the upper opening edge of the mixing tank and projecting into the tank, and a plate portion rising from the bottom side in the tank. (Claim 3).
(C) Preliminarily mixed with a part of the mud having a large specific gravity and the additive continuously disposed in one side part of the mixing tank and extracted from the mixing tank. As an auxiliary mixer that circulates into the mixing tank.

  On the other hand, the method of the present invention according to claim 5 collects waste mud generated at ground improvement, construction site, etc., adjusts the water content of the waste mud, and then mixes additives to produce fluidity improved soil. In the waste mud regeneration processing method, using the waste mud regeneration processing apparatus according to any one of claims 1 to 3, the waste mud charging step of charging the waste mud into the first tank side of the mixing tank, Along with the operation of transferring the mud from the first tank to the second tank by the backhoe, a large amount of mud soil with a large specific gravity is accumulated on the second tank side among the mud components, and mud with a low specific gravity is accumulated on the first tank side. A muddy water removing step of separating and separating the upper layer mud water and the lower layer muddy soil on the first tank side and removing the upper layer muddy water out of the tank, and the mud remaining in the first tank and the second tank Measure the total amount of the mud (based on the relationship between the amount of additive and the soil strength obtained in advance) The calculation step of calculating the total amount of the additive according to the total amount, and the mixing step of mixing the total amount of the mud and the total amount of the additive to a predetermined degree of mixing with the backhoe in the mixing tank, Yes.

  Further, according to the method of the present invention of claim 6, the waste mud generated at the ground improvement or construction site is collected, the moisture of the waste mud is adjusted, and then the additive is mixed to produce waste fluid improved soil. In the regeneration processing method, using the waste mud regeneration processing apparatus according to claim 4, the waste mud charging step of charging the waste mud into the first tank side of the mixing tank, and the waste mud of the first tank Along with the operation of transferring to the second tank by the backhoe, a large amount of mud soil having a large specific gravity is accumulated on the second tank side among the mud components, and a muddy water having a small specific gravity is accumulated on the first tank side. The upper layer mud and the lower layer mud are separated, and the upper layer mud is removed from the tank, and the total amount of mud remaining in the first tank and the second tank is measured. Additives according to the total amount of mud (based on the relationship between the premixed amount of additive and soil strength) The calculation step of calculating the total amount, and the operation of returning to the mixing tank while continuously premixing a part of the mud transferred from the mixing tank and the additive by driving the auxiliary mixer are calculated. The premixing step is repeated until the total amount of the additive is reached, and the main mixing step is carried out by increasing the premixed mixture to a predetermined degree of mixing with the backhoe in the mixing tank.

  In addition, in the calculation process of claims 5 and 6, the total amount of mud is measured, for example, by adding a capacity scale from the bottom to the top in the first tank or the second tank. The method of calculating by adding the amount of mud accumulated in each tank, the method of calculating by subtracting the weight of the mixing tank from the total weight of the mixing tank and the amount of mud accumulated in each tank using a weight meter Either may be used. Moreover, in the former, it is preferable to convert into the total weight of the mud in a tank from the total capacity of the mud and the average density of the mud.

  In the first aspect of the invention, the mixing tank has the first tank and the second tank, and the shape of the partition part of both tanks is devised, so that the mud in the tank is operated by operating the backhoe outside the tank. Easy to scoop from one tank into the second tank, and with the movement to scoop from the first tank into the second tank, only the mud from the mud is stored in the second tank. The muddy water is separated into muddy soil and muddy water so that the muddy water is mainly stored therein, and the muddy water is collected in the first tank and easily removed from the tank. As a result, the device of the present invention leaves only the mud from the discharged mud in the tank, adds an additive according to the mud, mixes efficiently by the operation of the backhoe, and does not cause a failure as designed. Ensure fluidity improved soil can be manufactured.

  In the second aspect of the invention, by operating the backhoe, the mud is scooped and transferred from the first tank to the second tank, or the mud and the additive in each tank are scooped and mixed again with the movement of falling back. In doing so, the most easily hitting portion of the backhoe (bucket) is formed of an elastic plate, so that the apparatus can be prevented from being damaged. In addition, in this configuration, for example, when the backhoe (bucket) is moved between both tanks, the backhoe is moved using the gap between the elastic plates as a guide, or the mud or mud and the additive are scooped. -When repeating the mixing operation to drop, the gap between the elastic plates is used as a guide so that it can drop to the optimum position.

  In the invention of claim 3, for example, when scooping the mud from the first tank by the operation of the backhoe and transferring it to the second tank, the mud or the like may protrude from the tank edge side due to rebound or splash due to a drop impact or the like. In addition, the herba hang-like scattering prevention plate prevents scattering outside the tank, thereby increasing the reuse rate and maintaining the environment near the mixing tank.

  In the invention of claim 4, by providing an auxiliary mixer, the processing method of claim 6 is enabled, whereby mud and additive can be more efficiently and uniformly mixed.

  In the invention of claim 5, the waste mud regeneration processing apparatus of claims 1 to 3 is used to make it possible to separate the mud from the mud thrown into the first tank by the operation with the existing backhoe, and the mud is separated from the mud. Grasping the total amount of mud thus obtained and the total amount of the additive calculated based on it are mixed, so that mechanical failure is less likely to occur, and fluidity improved soil having stable properties and uniform quality can be produced. In other words, the method of the present invention uses the mixing tank and the backhoe to efficiently separate and use only the mud in the discharged mud, and calculates the total amount of additive (total added amount) according to the total amount of the mud. In addition, since the backhoe serves as a means for transferring and mixing the waste mud (which can also be used as a means for transferring muddy water for removing muddy water accumulated in the first tank to the outside of the tank), Patent Documents 1 and 2 Thus, it is possible to produce a high-quality fluidity-improving soil by eliminating the trouble that is likely to occur in the mixing mechanism section and suppressing the variation in properties.

  In the invention of claim 6, in addition to the function and effect of claim 5, the mud and the additive can be more efficiently and uniformly mixed by the auxiliary mixer.

  Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. In this description, the overall outline, the waste mud regeneration processing device, and the processing method using the same will be described in detail.

(Summary) FIG. 1 schematically shows the entire plant configuration including wastewater generated by the ground improvement method as a processing target and including related facilities for ground improvement as an application example of the apparatus and the processing method of the present invention. is there. In the figure, reference numeral 1 is a pile penetration ground penetration device installed on the surface of the ground improvement target area, and reference numeral 2 is a slurry plant for producing cement milk and the like.

  The ground penetrating device 1 is omitted in details, but the base machine, a vertical guide standing on the tip side of the base machine, a drive head and a swivel joint that can be raised and lowered along the vertical guide, as in the prior art, And a rotating shaft that is rotatably connected to the drive head and has a stirring blade attached to the lower portion thereof. On the other hand, in the slurry plant 2, for example, cement milk is produced from cement supplied from a silo and water (fresh water) supplied from a water supply, and the cement milk enters a rotating shaft from a swivel joint via a pump or the like. It is pumped to a supply pipe that is piped to the ground and ejected into the ground through a discharge port provided on the lower end side of the rotating shaft and the stirring blade side. After injection, the pile is created as an improved pile by mixing with in-situ soil with a stirring blade. In the slurry plant 2, water collected from the waste mud to be treated, which will be described later, is stored in the storage tank 8 as excavated water, and the excavated water passes through the rotary shaft into the ground via a pump or the like. The swivel joint is pumped to the supply pipe in the rotating shaft and ejected into the ground.

  In the above ground improvement target area, on the ground surface side, a sludge storage pit 3 referred to as a so-called pot lift is created in the vicinity of the pile formation part, and the waste mud that comes out along with the pile formation is the storage pit. 3 is temporarily stored. This waste mud has a high water content ratio and good fluidity during penetration of the rotating shaft, but during pile construction, the cement is mixed and the viscosity increases. For this reason, the waste mud in the storage pit 3 is delivered to the dump truck 5 or the like by the backhoe 4 and transported to the mixing tank 6 which is the main part of the apparatus of the present invention installed in the site of the construction site. It is manufactured as improved soil by mixing and stirring with a predetermined amount of additive after reducing the amount of water in the mud.

  The additive is selected according to the application of the improved soil and the required strength, and the following materials are usually used. (A) Cement or lime. These are materials that require high strength such as slurry materials for ground improvement, embankment materials, backfill materials for pier foundations, and roadbed materials. (B) PH adjusters, waste paper, plant seeds, inorganic / organic fertilizers. These are materials for soil improvement such as revegetation that do not require particularly high strength, such as topsoil that is sprinkled into green spaces.

  As will be described later, the mixing tank 6 makes it possible to separate the discharged mud into mud and muddy water, and the additive is mixed with the mud accumulated in the tank to produce the target improved soil. The muddy water separated in the mixing tank 6 is transferred to the dewatering device 7 by a backhoe, a recovery device 31 described later, and the like, and further separated into water and mud using a flocculant solution. The mud produced in the dewatering device 7 is returned to the mixing tank 6 and used for producing improved soil. A part of the water separated by the dehydrator 7 is supplied to the storage tank 8 in the slurry plant 2 by a submersible pump or the like and used as the above-described drilling water. Excess water is classified as wastewater and, if necessary, is made harmless by PH treatment before being discharged into a river or the like.

(Mudden regeneration processing apparatus) FIG. 2 schematically shows the main part of the apparatus of the present invention. This waste mud regeneration processing apparatus mainly comprises a mixing tank 6 for producing improved soil, and collects backhoe 15 for transfer and mixing means, an auxiliary mixer 18 for premixing, and muddy water separated in the mixing tank 6. A second backhoe 30 for suspending the collection device 31 is provided.

  Among these, the mixing tank 6 is made of a combination of steel plates and is a rectangular box-shaped container having an upper opening, and the inside of the tank is interposed between the first tank 6 a and the second tank 6 b via an intermediate partition 13. It is divided into and. Moreover, the 1st tank 6a and the 2nd tank 6b are substantially the same magnitude | sizes, and the partition part 13 between tanks stood | curved from the bottom face in each tank in a curved shape, and joined each curved top part. It is formed in a state. That is, each tank 6a, 6b has a substantially arcuate bottom surface, and the partition portion 13 has a mountain-shaped cross section or a substantially triangular cross section due to the arc-shaped rising portions on both sides. As inferred from the schematic diagram of FIG. 8, this configuration has a shape devised so that the bucket of the backhoe 15 can be moved along the inner surface of each tank to easily scoop the mud and the like into the bucket.

  In other words, each of the tanks 6a and 6b has curved front and rear inner surfaces, and both inner surfaces are vertical surfaces. And among each tank 6a, 6b, the capacity | capacitance scale (not shown) is attached | subjected to the vertical surface of the near side of FIG. For this reason, in this tank structure, the amount of mud and mud accumulated in the tanks 6a and 6b can be understood by looking at the capacity scale. In addition, elastic plates 14 are respectively attached to opposing side surfaces in the mixing tank 6. The elastic plates 14 on both sides protrude along the top of the partition 13 between the tanks, and communicate the first tank 6a and the second tank 6b through a gap between the protruding ends facing each other. . The gap is set to a size that allows the bucket of the backhoe 15 to pass with a margin, and exposes the corresponding portion at the top of the partition portion 13. The gap is useful, for example, for the backhoe 15 scooping up the mud from the first tank 6a through the bucket and transferring it to the second tank 6b, or dropping it onto the top of the partition 13 to efficiently mix the mud and the additive. It is a place to become.

  Further, a door 11 serving as a side plate that is attached via a hinge and is opened and closed by a hydraulic cylinder 10 is provided at the front end of the first tank 6a. And the 1st tank 6a is the state where the door 11 was opened, the slope material 12 was joined to the end surface side of the door 11, and the above-mentioned dump truck 5 moved on the slope material 12 by the back, The waste mud that is the load can be put into the first tank 6a.

  Further, as shown in FIG. 3, a flange portion 16 facing inward is formed at the upper opening edge of the mixing tank 6, and the curved steel plate 17 constituting each tank 6 a, 6 b is formed. A scattering prevention plate 17 a is provided between the upper portion and the flange portion 16. The scattering prevention plate 17a is joined to the steel plate 17 and the flange 16 by welding or the like, and is curved in an overhang shape obliquely downward, for example, due to rebound of mud and mud accompanying the mixing and stirring operation of the backhoe 15 and the like. In addition, it is possible to prevent material diffusion outside the tank.

  An auxiliary mixer 18 is disposed on one side of the mixing tank 6 along the longitudinal direction. The auxiliary mixer 18 premixes the mud separated from the waste mud and the additive, and as shown in FIGS. 4 and 5, a mud receiving hopper 19 having a housing 22 connected to the upper portion, and an upper side surface. An additive supply unit 20 connected to the part, an outlet part 21 connected to the lower side part, a rotary shaft 25 arranged in the longitudinal direction on the lower side and equipped with a plurality of stirring blades 23 and screws 24 around And a motor 28 that rotates the rotary shaft 25 via a chain 26 and a sprocket 27, and the outlet portion 21 is installed in the second tank 6b.

  As shown in FIGS. 6 and 7, the recovery device 31 includes an annular float 32, a frame 33 that covers the outer periphery of the float 32, and a plurality of upper support frames 34 that protrude upward from the frame 33. A plurality of lower support frames 36 projecting downward from the frame 33, and a predetermined mesh stretched between the lower portions of the lower support frames 36 and on the bottom surface thereof. A submerged pump 39 that is connected to the lower end of a suction pipe 38 that movably passes through the screen 37, which is movable up and down the installation plate 35, and 1 that is arranged on the installation plate 35. It is roughly configured from a pair of vibrators 40 and the like.

  The suction pipe 38 is suspended at the top from the second backhoe 30 via the wire 41 and connected to the dehydrator 8 described above via an elbow 42 and a hose 43 provided at the upper end of the suction pipe 38. is doing. Reference numeral 44 denotes a power cord for the vibrator 30 and the submersible pump 39. The cord 44 is connected to the wire 41 and extends to the cockpit side of the backhoe 30.

  When the above recovery device 31 is put into the muddy water of the first tank 6a, the submersible pump 39 is immersed in the muddy water with the upper side floating near the liquid surface via the float 32, and the vibrator 40 is driven. By doing so, as shown by the broken line in FIG. 7, the surroundings of the recovery device 31 are easily liquefied, and only the water in the muddy water passing through the screen 37 is sucked into the submersible pump 39 and sucked and removed through the hose 43. become.

(Discharged mud regeneration method) Next, a procedure for producing improved soil of a predetermined quality from the above-described discharged mud using the above-described discharged mud regeneration processing device will be described. This waste mud regeneration processing method is roughly divided into a mode in which the auxiliary mixer 18 is used and a mode in which the auxiliary mixer 18 is not used. That is, when the auxiliary mixer 18 is not used, it is accompanied by an operation of introducing the mud into the first tank 6a and an operation of transferring the mud in the first tank 6a to the second tank 6b by the backhoe 15. Among the mud components, a large amount of mud having a large specific gravity is stored in the second tank 6b, and a small specific gravity is stored in the first tank 6a. And the muddy water removal process for removing the upper layer muddy water to the outside of the tank with the recovery device 31 and the like, and the total amount of mud remaining in each tank 6a, 6b is measured to calculate the total amount of additive according to the total amount of mud And a mixing step of mixing the total amount of the mud and the total amount of the additive to a target mixing degree by the backhoe 15.

  On the other hand, when the auxiliary mixer 18 is used, the above-described waste mud charging step, muddy water removal step, and calculation step are the same, and then the mud soil transferred from the mixing tank 6 by driving the auxiliary mixer 18 is used. Part and the additive are continuously premixed, and the operation of returning to the mixing tank 6 is repeated until the calculated total amount of the additive is obtained, and the preliminary mixture is mixed in the mixing tank 6. The main mixing process is carried out by increasing the kneading degree to the target mixing degree by the backhoe 15.

  Hereinafter, the operation procedure will be clarified with reference to FIGS. 8 and 9. First, Fig.8 (a) has shown the waste mud input process. In this step, it is confirmed that the mixing tank 6 is empty, the slope material 12 is laid in front of the door 11, the door 11 is opened through the cylinder 10 and supported on the upper end of the slope material 12, and then discharged. The dump truck 5 loaded with mud is backed on the slope 12, the loading platform is tilted, and the mud is thrown into the first tank 6a. This operation is repeated until the discharged mud in the first tank 6a reaches a predetermined capacity. Finally, the slope material 12 is removed and the door 11 is closed via the cylinder 10.

FIGS. 8B and 8C show the muddy water removing step. In this step, the backhoe 15 is driven to move the waste mud from the first tank 6a with the backhoe bucket and transferred to the second tank 6b. A large amount of muddy water having a small specific gravity is accumulated on the first tank 6a side. Thereafter, in the first tank 6a, after waiting for separation into upper mud water and lower mud due to the sedimentation phenomenon, the second backhoe 30 is driven as shown in FIG. 1 is poured into the muddy water in the tank 6a, the vibrator 40 is driven, and the submersible pump 39 is driven to discharge and remove the upper muddy water to the dehydrator 7 side in FIG. Thereby, only mud remains in each tank 6a, 6b.

In the next calculation step, the total amount of mud remaining in each tank 6a, 6b is measured, and the required amount of additive is calculated accordingly. First, the total amount of mud is calculated by reading the volume scales attached to the inner surfaces of the tanks 6a and 6b and adding them together. In this case, when there is little mud in each tank 6a, 6b, in order to suppress a measurement error, the mud in the first tank 6a is moved to the second tank 6b as shown in FIG. It is preferable to read on the volume scale. The total amount (addition amount) of the additive is, for example, as shown in FIG. 10 by a preliminary blending test using mud that simulates the mud separated from the waste mud in advance when the additive is cement. A graph is prepared, and the cement blending amount per unit according to the target strength and application conditions is obtained from the relationship between the cement addition amount and the solidification strength, and then converted into the total amount of mud.

  When the auxiliary mixer 18 is not used, as a mixing step, the total amount of additive according to the total amount of mud is introduced into the mud of each tank 6a, 6b or the mud of tank 6b, and the target mixing degree is achieved by operating the backhoe 15. Will be mixed. In this operation, for example, the backhoe 15 is operated to scoop up the mud and additives from the first tank 6a and the second tank 6b with the backhoe bucket and drop into the top of the partition 13 described above. preferable.

  When the auxiliary mixer 18 is used, as a prognostic mixing step, as shown in FIG. 9 (a), the mud of each tank 6a, 6b or the mud of the tank 6b is put into the hopper 19 of the auxiliary mixer 18 as shown in FIG. By supplying the additive into the housing 22 described above, it is premixed and discharged into the second tank 6b. After the addition of all the additives, the main mixing step is performed until the target mixing degree is reached by operating the backhoe 15 as in the mixing step.

  Next, as shown in FIG. 9B, the improved soil in each of the produced tanks 6 a and 6 b is transferred to the dump truck 5 by the backhoe 15. And as shown in FIG.9 (c), it will be conveyed by the dump truck 5 to the target construction place. In addition, as an application of the manufactured improved soil, depending on the type of additive, it is used for various applications, but when used as a slurry material again in the same site where the ground improvement method is being performed as in the form example Can be used in the slurry plant 2 of FIG. 1 as a part of the raw material of the slurry by selecting cement or the like as an additive. Other than that, it can be used as a material required for the nearby construction area, such as embankment material, backfilling material near the pier, and roadbed material.

It is a figure which shows the example of a plant which manufactures improved soil from the waste mud generated by the ground improvement construction method. It is a schematic perspective view of the principal part which shows a waste mud reproduction | regeneration processing apparatus. It is the cross-sectional perspective view which expanded the part in the III-III line of FIG. It is a model front view of the auxiliary mixer in A arrow view of FIG. It is a schematic cross section along the VV line of FIG. It is a schematic perspective view of the muddy water collection | recovery apparatus which expands and shows the B section of FIG. It is a schematic cross section which shows the use condition of the collection | recovery apparatus. (A)-(d) is explanatory drawing which shows the main processes or procedures of a sludge regeneration processing method. (A)-(c) is explanatory drawing which shows the main processes or procedures following FIG. It is a graph which shows the relationship between the addition amount of cement, and solidification strength.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Ground penetration apparatus 2 ... Slurry plant 4,15 ... Backhoe 6 ... Mixing tank (equivalent to a mixing tank, 6a is a 1st tank, 6b is a 2nd tank)
DESCRIPTION OF SYMBOLS 13 ... Partition part 14 ... Elastic board 17a ... Scatter prevention board 18 ... Auxiliary mixer 31 ... Recovery apparatus for muddy water

Claims (6)

A mixing tank and a backhoe having an upper opening are provided, and the mud put into the mixing tank can be removed from the mud by separating muddy water from the waste mud, or from outside the mixing tank by operation via the backhoe. In the sludge regeneration treatment equipment that mixes the sludge and additive materials inside,
The mixing tank divides the inside of the tank into a first tank and a second tank via a partition portion, and the partition portion rises in a curved shape from the bottom surface in each of the tanks and has a curved top portion. The waste mud regeneration processing device is characterized by being formed in a joined state.   It is attached to both inner sides facing the mixing tank, protrudes along the top of the partition part, and communicates the first tank and the second tank via a gap between the protruding ends facing each other. 2. The waste mud regeneration processing apparatus according to claim 1, further comprising left and right elastic plates.   It has a splash prevention plate that joins an overhanging flange portion that protrudes from the upper opening edge of the mixing vessel and projects into the vessel, and a plate portion that rises from the bottom side in the vessel. The waste mud regeneration processing apparatus according to claim 1 or 2.   Among the mud removed from the mixing tank disposed on one side of the mixing tank, a part of the mud with high specific gravity and the additive are continuously premixed, and the mixing tank is used as a premix. The waste mud reproduction | regeneration processing apparatus of Claim 1 provided with the auxiliary mixer which circulates in inward. In the waste mud regeneration treatment method of collecting waste mud generated at ground improvement or construction site, etc., adjusting the moisture of the waste mud, and mixing it with additive to produce fluidity improved soil,
Using the waste mud regeneration processing apparatus according to any one of claims 1 to 3,
A waste mud charging step of charging the waste mud into the first tank side of the mixing tank;
Along with the operation of transferring the waste mud from the first tank to the second tank by the backhoe, a large amount of mud soil having a large specific gravity is accumulated in the second tank side among the mud components, and the muddy water having a low specific gravity is accumulated on the first tank side. And the muddy water removing step of separating the muddy water of the upper layer and the muddy soil as the sediment component of the lower layer on the first tank side, and removing the upper muddy water out of the tank,
A calculation step of measuring the total amount of mud remaining in the first tank and the second tank, and calculating the total amount of additive according to the total amount of the mud;
A waste mud regeneration processing method comprising: a mixing step of mixing the total amount of the mud and the total amount of the additive to a target mixing degree by the backhoe in the mixing tank. In the waste mud regeneration treatment method of collecting waste mud generated at ground improvement or construction site, etc., adjusting the moisture of the waste mud, and mixing it with additive to produce fluidity improved soil,
Using the waste mud regeneration processing device according to claim 4,
A waste mud charging step of charging the waste mud into the first tank side of the mixing tank;
Along with the operation of transferring the waste mud from the first tank to the second tank by the backhoe, a large amount of mud soil having a large specific gravity is accumulated in the second tank side among the mud components, and the muddy water having a low specific gravity is accumulated on the first tank side. And the muddy water removing step of separating the muddy water of the upper layer and the muddy soil as the sediment component of the lower layer on the first tank side, and removing the upper muddy water out of the tank,
A calculation step of measuring the total amount of mud remaining in the first tank and the second tank, and calculating the total amount of additive according to the total amount of the mud;
While continuously premixing a part of the mud transferred from the mixing tank by driving the auxiliary mixer and the additive, the operation of returning to the mixing tank until the calculated total amount of the additive is reached. Repeated premixing steps;
A waste mud regeneration treatment method comprising: a main mixing step of increasing and kneading the preliminary mixture to a target degree of mixing with the backhoe in the mixing tank.

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