JP3054676B1 - Agitator cleaning waste liquid treatment apparatus and treatment method - Google Patents

Abstract

Abstract: [PROBLEMS] To significantly reduce the amount of water required for washing an agitator, to be able to be installed on a small site and to be inexpensive, and to easily reuse aggregate separated from washing waste liquid. And removing the washing liquid separated from the washing waste liquid so that it can be used for kneading the mortar, and reducing the equipment cost by using a simple device for dewatering sludge. Another object is to facilitate maintenance. SOLUTION: A transport drum conveyor having a cylindrical drum, a trommel having a cylindrical sieve, and separating the washing waste liquid into an aggregate, sludge and a washing liquid, and an aggregate having a bag-shaped filter and a washing liquid collecting section. A drying device, and a sludge drying device having a bag-shaped filter and a cleaning liquid recovery unit are provided. In addition, a stirring tank for containing a mixture of the sludge and the washing liquid separated by the trommel is provided. The cleaning liquid collected in the cleaning liquid recovery section is selectively sent to a stirring tank or an auxiliary tank. The cleaning liquid is previously loaded on the concrete mixer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for treating a waste washing liquid when an agitator such as a truck mixer is washed with a washing liquid comprising a concrete stabilizer, and an agitator cleaning treatment using the treating apparatus and the treating method. The present invention relates to a system and an agitator cleaning method.

[0002]

2. Description of the Related Art Conventionally, when washing the inside of an agitator such as a concrete mixer, water is poured into the agitator and the concrete attached to the inside of the agitator is washed out by rotating the agitator. I was When such a washing method is performed, from the agitator, sludge made of cement or the like,
Aggregate such as sand and washing waste liquid mainly composed of water are discharged.

[0003] As a conventional agitator cleaning waste liquid processing apparatus 101 for processing such cleaning waste liquid, for example, as shown in FIG.
03, a stirring tank 104, a dehydrator 105, a supernatant water tank 106, and a concentration adjusting tank 107. This conventional agitator cleaning waste liquid processing apparatus 101 performs processing of the cleaning waste liquid 108 as follows. That is, the cleaning waste liquid 108 discharged from the agitator is first introduced into the waste liquid pit 102. The waste liquid pit 102 is a tank for temporarily storing the cleaning waste liquid 108. Next, the washing waste liquid 108 in the waste liquid pit 102 is pumped up by the first pump 109 and is put into the sorting machine 103. The sorter 103 is, for example, a trommel made of a cylindrical rotary sieve, and separates the washing waste liquid 108 into an aggregate 110 and a mixed liquid 111 of sludge and water. The separated aggregate 110 is discharged out of the apparatus. Also, a mixed liquid 11 of the separated sludge and water is used.
1 is accommodated in a stirring tank 104 and concentrated while being stirred by a stirrer 112 so that sludge does not settle. And
Mixed liquid 111 of sludge and water in the stirring tank 104
Is pumped up by the second pump 113 and sent to the dehydrator 105. The dehydrator 105 is, for example, a pressure dehydrator 105 using a filter cloth.
1 is separated into sludge 114 and water 115. The water 115 separated here is stored in the supernatant tank 106, and the sludge 114 is discarded.

On the other hand, in the concentration adjusting tank 107,
The mixed liquid 111 of the sludge and the water concentrated in the stirring tank 104 is a third liquid different from the one sent to the dehydrator 105.
While being sent by the pump 116, the water stored in the supernatant water tank 106 is also sent to and mixed with the fourth pump 117, so that the concentration of the sludge is adjusted to a concentration suitable for concrete kneading. . Then, the mixture of the sludge and the water whose concentration has been adjusted is used for kneading the concrete. Thereby, the amounts of sludge and water to be discarded can be reduced.

However, the conventional agitator cleaning waste liquid treatment apparatus 101 has the following problems.
First, in the conventional cleaning method of flushing the inside of the agitator with water, a large amount of water needs to be used, so that the amount of the cleaning waste liquid 108 generated thereby becomes enormous. Therefore, in the conventional agitator cleaning waste liquid treatment apparatus 101,
Waste pit 102, stirring tank 104, supernatant water tank 106
However, there is a problem that a large site area is required, and the cost of the device itself and the installation cost of the device are increased.

Secondly, discarding a large amount of water used for washing the agitator as it is is a waste of resources, and also increases the cost required for washing the agitator. Therefore, in order to effectively use a large amount of water and reduce the amount of sludge 114 to be discarded, the mixed liquid 1 of the sludge and water separated from the washing waste liquid 108 as described above is used.
11 is used after being kneaded with concrete, but at that time, it is necessary to adjust the concentration of the sludge before kneading, and therefore, there is a problem that it is necessary to install a concentration adjusting tank 107 to adjust the concentration.

Third, in the conventional agitator cleaning waste liquid treatment apparatus 101, the aggregate 110 separated from the cleaning waste liquid 108 has a large amount of sludge such as cement adhered to the periphery thereof. Therefore, when kneaded with concrete as the aggregate 110 as it is, it is difficult to make the mixing ratio of concrete cement and the aggregate 110 appropriate, so that the aggregate 110 cannot be reused as it is. There is. In addition, the aggregate 1
No. 10 is only dried naturally after being discharged out of the apparatus, so that it takes a considerable period of time until it is completely dehydrated and dried, and cannot be reused as aggregate 110 immediately. There is also.

[0008] Fourth, the method of mechanically dewatering by pressurizing the separation of sludge and water in the dehydrator 105 has the advantage that the time required for dehydration can be shortened. Are complicated and the equipment cost is high, and the maintenance of the dehydrator 105 is troublesome and costly.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has been made in consideration of the above-mentioned problems. To reduce the volume of water and eliminate the need for equipment for reusing a large amount of water, so that it can be installed on a small site and be inexpensive, and easily reuse aggregate separated from washing wastewater It is an object of the present invention to make it possible to remove the sludge in a state in which the sludge can be removed, and to reduce the facility cost and facilitate the maintenance by using a simple device for dewatering the sludge.

[0010]

Means for solving the above problems are as follows. In other words, the agitator washing waste liquid treatment apparatus according to the first aspect of the present invention supplies a washing liquid comprising a concrete stabilizer having an action of temporarily stopping a hydration reaction of concrete into the agitator, and adheres the concrete to the inner surface of the agitator. And an agitator cleaning waste liquid treatment apparatus for processing a cleaning waste liquid mainly composed of sludge, aggregate, and a cleaning liquid discharged from the agitator when a cleaning method for cleaning the agitator is performed. A transport drum conveyor having a cylindrical drum, the inner surface of which is a transport surface of the cleaning waste liquid, which is inclined and disposed so that the traveling direction of the cleaning waste liquid is low, and which is driven to rotate in a circumferential direction; Opening that is connected to the conveyor drum conveyor and does not allow the aggregate having a certain particle size or more among the components contained in the washing waste liquid to pass through Having a cylindrical sieve that is inclined and arranged so that the direction of travel of the washing waste liquid is low, and has a cylindrical sieve that is driven to rotate in the circumferential direction, and separates the washing waste liquid into aggregate, sludge, and washing liquid. Trommel to be formed in a bag shape that can accommodate the aggregate separated by the trommel,
An aggregate drying apparatus having a bag-shaped filter that allows only the washing liquid attached to the aggregate to pass therethrough, and a washing liquid recovery unit provided below the bag-shaped filter to collect the passed washing liquid; It is formed in a bag shape capable of storing a mixed liquid of the separated sludge and the cleaning liquid, and a bag-shaped filter that allows only the cleaning liquid contained in the mixed liquid to pass therethrough, and a bag-shaped filter that collects the passed cleaning liquid. And a sludge drying device having the provided washing liquid recovery section.

A second aspect of the present invention is directed to the agitator cleaning waste liquid treatment apparatus, wherein the tank is provided below the trommel and contains a mixture of sludge and cleaning liquid separated by the trommel. And a stirring tank having a stirring device for preventing the sludge from settling, and a delivery device for sequentially sending out the mixed solution contained in the stirring tank to the sludge drying device in an appropriate amount. It is characterized by doing.

According to a third aspect of the present invention, there is provided the agitator cleaning waste liquid treatment apparatus according to the second aspect, for discharging the cleaning liquid collected in the cleaning liquid recovery section of the aggregate drying apparatus and the sludge drying apparatus. A cleaning liquid discharge pipe connected to the cleaning liquid recovery section, and a single cleaning liquid discharge pipe downstream of the cleaning liquid discharge section; a first discharge pipe for branching from the cleaning liquid discharge pipe at the branch section and sending the cleaning liquid to the stirring tank; A second discharge pipe for branching from the cleaning liquid discharge pipe at the branch portion and sending a cleaning liquid to an auxiliary tank;
A switching valve provided in the branch portion for selectively switching a flow path of the cleaning liquid to a first discharge pipe or a second discharge pipe, and containing the cleaning liquid passing through the second discharge pipe, and And an auxiliary tank provided with a take-out device for taking out as required.

According to a fourth aspect of the present invention, there is provided an agitator cleaning waste liquid treating apparatus having an upper surface opening for recovering the cleaning waste liquid discharged from the agitator according to the first, second, or third configuration. A discharge port provided at a lower portion is provided with a collection chute connected to an input port of the conveyor drum conveyor.

According to a fifth aspect of the present invention, there is provided the agitator cleaning waste liquid treatment apparatus, wherein an opening / closing valve for opening and closing the flow path of the cleaning waste liquid is provided downstream of the discharge port of the recovery chute. It is a feature.

According to a sixth aspect of the present invention, there is provided an agitator cleaning system, comprising: a cleaning liquid tank containing a cleaning liquid comprising an agitator and a concrete stabilizer having a function of temporarily stopping a hydration reaction of concrete; A truck mixer having a liquid feed pipe and a valve for feeding a cleaning liquid into the agitator as needed, and an agitator cleaning waste liquid treatment device according to claim 1, 2, 3, 4, or 5. It is a feature.

According to a seventh aspect of the present invention, there is provided a method for treating an agitator washing waste liquid, wherein a washing liquid comprising a concrete stabilizer having a function of temporarily stopping a hydration reaction of concrete is introduced into the agitator, and the concrete is applied to the inner surface of the agitator. By preventing the adhesion, when a cleaning method for cleaning the agitator is carried out, the sludge discharged from the agitator, aggregate, and an agitator cleaning waste liquid treatment method for processing a cleaning waste liquid containing a cleaning liquid as a main component. Agitating the washing waste liquid and rubbing the solids contained in the washing waste liquid, thereby removing the sludge attached to the aggregate, and the washing waste liquid that has passed through the removing step, A separation step of sieving according to the particle size and separating into aggregate, sludge and washing liquid, and separating the aggregate separated in the separation step. An aggregate drying step of removing the cleaning liquid attached to the aggregate by exuding only the cleaning liquid by leaving it in a bag-shaped filter formed in a bag shape and allowing only the liquid to pass and leaving it for a certain period of time; The cleaning liquid is formed from a mixture of the sludge and the cleaning liquid separated in the process, formed in a bag shape, stored in a bag-shaped filter that allows only the liquid to pass through, and allowed to stand for a certain period of time, so that only the cleaning liquid oozes out and the mixed liquid is removed. And a sludge drying step of removing the cleaning liquid from the wastewater.

According to an eighth aspect of the present invention, in the method for treating an agitator cleaning waste liquid according to the seventh aspect, the mixed liquid of the sludge and the cleaning liquid separated in the separation step is temporarily stored in a stirring tank provided with a stirring device. Then, a storage step of sequentially sending the mixed solution to the sludge drying step by an appropriate amount,
It is provided between the separation step and the sludge drying step.

According to a ninth aspect of the present invention, in the method for treating agitator cleaning waste liquid, the cleaning liquid exuded through the bag-shaped filter in the aggregate drying step and the sludge drying step is collected.
Normally, the cleaning liquid is sent to the stirring tank for recirculation, and when the stirring tank is full, the cleaning liquid is sent to an auxiliary tank instead of the stirring tank, and once stored in the auxiliary tank, taken out. It has a cleaning liquid treatment step used for kneading concrete.

According to a tenth aspect of the present invention, there is provided the agitator cleaning treatment method, wherein the concrete mixer is provided with a cleaning liquid comprising a concrete stabilizer having a function of temporarily stopping a hydration reaction of the concrete in the concrete mixer, and the concrete in the agitator is then loaded. And discharging the cleaning liquid into an agitator for cleaning, and treating the cleaning waste liquid after cleaning the agitator by the agitator cleaning waste liquid treatment method according to claim 7, 8 or 9. It is.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an agitator cleaning waste liquid processing apparatus 1 and an agitator cleaning waste liquid processing method according to an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, an agitator cleaning waste liquid treatment apparatus 1 according to an embodiment of the present invention includes a collection chute 2 and a transport drum conveyor 3.
, Trommel 4, aggregate drying device 5, stirring tank 6,
It is provided with a sludge drying device 7 and an auxiliary tank 8. The details will be described below.

In the agitator washing waste liquid treatment apparatus 1 according to the present invention, as an agitator washing method, a washing liquid comprising a concrete stabilizer having a function of temporarily stopping a hydration reaction of concrete is poured into the agitator 9 and the agitator 9 is washed. It is assumed that a washing method for washing the agitator 9 is used by preventing concrete from adhering to the inner surface of the agitator 9, and to treat the washing waste liquid 10 discharged from the agitator 9 when this washing method is performed. Device. According to this cleaning method, a large amount of water for cleaning, which has been conventionally required, is not required, and the cleaning can be performed with only a small amount of the cleaning liquid. Therefore, the amount of the cleaning waste liquid 10 discharged after cleaning the agitator 9 is also reduced. The number can be greatly reduced as compared with the related art. In this cleaning method, a sludge made of cement or the like, an aggregate, and a cleaning waste liquid 10 mainly containing the cleaning liquid are discharged. As the concrete stabilizer, for example, Delvoclean (trade name,
NMB Co., Ltd.) and F-Clean (product name,
And the like can be used.

The recovery chute 2 is mounted on the agitator 9
Having an upper surface opening 12 for collecting the cleaning waste liquid 10 discharged from the
3 is connected to the inlet 14 of the conveyor drum conveyor 3. The upper opening 12 is desirably designed as wide as possible in order to facilitate positioning of the discharge port of the agitator 9 such as the truck mixer 15 when the cleaning waste liquid 10 is collected. In particular, if the length L in the horizontal direction is designed to be long, a plurality of truck mixers 15 can be arranged side by side to collect the cleaning waste liquid 10 at the same time. The shape of the inside of the collecting chute 2 is formed by inclining the bottom surface 16 so that a certain point becomes the lowest, and
A discharge port 13 is provided downward from the location, and the collected cleaning waste liquid 10 is formed so as to be sent from the discharge port 13 to the input port 14 of the transport drum conveyor 3. As a specific shape of the collecting chute 2, for example, as shown in FIG. 2, the upper surface of a laterally substantially triangular prism-shaped main body 17 is the upper opening 12, and the bottom 16 is the lowest at the center in the length direction. So that the outlet 1
3 and a pipe 18 for connecting the discharge port 13 and the input port 14 of the transport drum conveyor 3. Further, as shown in FIG. 1, a slope 19 is provided in front of the collecting chute 2 in order to adjust the height of the truck mixer 15.

As shown in FIG. 3, an opening / closing valve 58 for opening and closing the flow path of the washing waste liquid may be provided in the pipe 18 downstream of the outlet 13 of the collecting chute 2 as shown in FIG. Here, a pinch valve is used as the opening / closing valve 58. This is because the pinch valve opens and closes the flow path by pressing the rubber sleeve, so that the pinch valve can be reliably opened and closed even when a large amount of minute solids are contained as in the washing waste liquid 10. Because. Since it is desirable to open and close the valve instantaneously, it is preferable to use a device that is connected to the compressor 59 and opens and closes by air pressure. The opening and closing valve 58 is
It is normally closed, and is opened when a predetermined amount of the cleaning waste liquid 10 discharged from the agitator 9 accumulates in the collection chute 2, and the cleaning waste liquid 10 is sent to the transport drum conveyor 3 collectively. Specifically, at the stage where the amount of the cleaning waste liquid 10 that is discharged when the agitator 9 is cleaned by one unit is accumulated, the opening / closing valve 58 is opened.
Is released. Generally, the washing waste liquid 10 after washing the agitator 9 is first discharged from a liquid such as a cleaning liquid, and a solid content such as aggregate and sludge is discharged later. Therefore, by providing the open / close valve 58, the liquid and the solid content of the cleaning waste liquid 10 are simultaneously sent to the conveyor drum conveyor 3, so that only the liquid flows first, and the solid content is reduced. It is possible to prevent the flow from remaining in the collection chute 2 and becoming difficult to flow.

As shown in FIG. 4, the transport drum conveyor 3 has an inner surface serving as a transport surface 20 for the cleaning waste liquid 10 and is arranged so as to be inclined so that the traveling direction of the cleaning waste liquid 10 becomes lower. It has a cylindrical drum 21 that is driven to rotate in the circumferential direction, and a drive device 22 that drives the cylindrical drum 21 to rotate, and is integrally formed with the trommel 4. The transport surface 20 on the inner surface of the cylindrical drum 21 is formed to be a flat surface without irregularities, and the cleaning waste liquid 10 is transported toward the trommel 4 with the rotation of the cylindrical drum 21. As such, they are arranged slightly inclined. The specific inclination angle is 0 from horizontal
It is appropriately adjusted in the range of about 5 ° and determined. The transport drum conveyor 3 can have the same configuration as the cylindrical conveyor of Japanese Utility Model Registration No. 3059532 by the present applicant. In the conveyor drum conveyor 3, a peeling step of peeling sludge such as cement adhered to aggregate contained in the washing waste liquid 10 is performed. That is, the washing waste liquid 10 moving on the transport surface 20 of the cylindrical drum 21 is stirred by the rotation of the cylindrical drum 21,
As a result, the solid content contained in the washing waste liquid 10 repeatedly collides with each other, and rubs against the transport surface 20 so that the sludge attached to the aggregate is separated.

As described above, the trommel 4 has the cylindrical sieve 23 integrally formed with the cylindrical drum 21 of the transport drum conveyor 3. The cylindrical sieve 23 is, like the cylindrical drum 21, arranged obliquely so that the traveling direction of the cleaning waste liquid 10 is lowered, and is driven to rotate in the circumferential direction. The driving device 22 for rotating and driving the cylindrical sieve 23 is shared with the driving device 22 of the transport drum conveyor 3. And the said cylindrical sieve 23,
Among the components contained in the washing waste liquid 10, there is an opening through which sludge, the washing liquid and aggregate having a particle diameter of not more than a predetermined value are allowed to pass, but aggregate having a particle diameter of not less than a predetermined value is not allowed to pass. The aperture is set to 0.5 to 5 in consideration of the particle size of the aggregate to be taken out and reused and the ease with which the cylindrical sieve 23 is clogged.
It is appropriately determined within a range of about mm. Hereinafter, in the column of "Detailed description of the invention", when referring to the aggregate 11,
Unless otherwise specified, it refers to aggregate 11 having a certain particle size or more separated from the washing waste liquid by the trommel 4, and when it is referred to as sludge, it has a certain particle size not separated by the trommel 4. It shall include aggregate. In the trommel 4, a separation step is performed in which the cleaning waste liquid 10 that has passed through the stripping step is sieved based on the particle diameter to separate the aggregate 11 having a certain particle diameter or more and a mixed liquid 24 of sludge and a cleaning liquid. That is, when the washing waste liquid 10 moves inside the cylindrical sieve 23, the sludge having a small particle diameter and the washing liquid fall through the cylindrical sieve 23 and fall down. The aggregates 11 having a certain particle size larger than the opening are moved to the terminal end without passing through the cylindrical sieve 23 and discharged from the discharge port 25 to be separated from each other.

As shown in FIG. 5, the aggregate drying device 5 is formed in a bag shape capable of accommodating the aggregate 11 separated by the trommel 4, and only the cleaning liquid adhering to the aggregate 11 is formed. And a washing liquid collecting unit 2 for collecting the washing liquid that has passed through the bag filter 26
And 7. The bag-shaped filter 26 is detachably attached to the main body 28 of the aggregate drying device 5 for taking out the stored aggregate 11. Further, the bag-like filter 26 is formed by forming a sheet-like filter having a very fine structure that allows only liquid to pass through into a bag-like shape, and is preferably made of a durable material so that it can be used repeatedly. . Specifically, bags used for sandbags can be suitably used because they are durable and do not allow soil to pass through. The bag-shaped filter 2
The size of 6 is desirably a size that can secure at least a capacity capable of accommodating all the aggregates 11 discharged in one day by the agitator cleaning waste liquid treatment apparatus 1 according to the present invention. This is because the bag-like filter 26
Usually, it takes about 12 hours to remove the cleaning liquid attached from the aggregates 11 stored in the container, and the stored aggregates 11 should be taken out at most once a day. Is desirable.

The washing liquid collecting section 27 is provided below the bag-like filter 26 for collecting the washing liquid that has passed through the bag-like filter 26. The shape of the washing liquid collecting part 27 is larger than the horizontal cross section of the bag-like filter 26 in which the aggregate 11 is accommodated so that all the washing liquid falling through the bag-like filter 26 can be collected. 2
In order to discharge the collected cleaning liquid from the cleaning liquid discharge pipe 30, which will be described later, the connection part 31 with the cleaning liquid discharge pipe 30 is formed so as to be lowest. Specifically, here, the cleaning liquid recovery section 27 is formed in the shape of the lowest dish at the center, and the cleaning liquid discharge pipe 3 is provided at the center.
0 is connected. In the present embodiment, the transport of the aggregate 11 separated by the trommel 4 to the aggregate drying device 5 is performed by a belt conveyor 32 (see FIG. 1). In the aggregate drying device 5, an aggregate drying step of removing the cleaning liquid attached to the aggregate 11 is performed. That is, the aggregate 11 separated in the separation step is accommodated in the bag-shaped filter 26 and left for a certain period of time to exude and remove only the cleaning liquid to remove the aggregate 11
Is dried, and the exuded washing liquid is dropped and collected in the washing liquid collecting section 27.

On the other hand, the mixed solution 24 of the sludge and the cleaning liquid separated in the trommel 4 is stored in a stirring tank 6 provided below the trommel 4 as shown in FIG. The stirring tank 6 has a stirring device 33 for preventing the sludge from settling. As the stirring device 33, various existing stirring devices can be used. The stirring tank 6 is attached to the stirring tank 6.
And a delivery device 34 for sequentially delivering the mixed solution 24 contained in the sludge drying device 7 to the sludge drying device 7 in an appropriate amount.
The delivery device 34 includes a mixed solution sending pipe 35 connecting the stirring tank 6 and the sludge drying device 7, and a delivery pump 36 for sending the mixed solution 24. In the stirring tank 6, the mixed liquid 24 of the sludge and the cleaning liquid separated in the separation step is temporarily stored while preventing sedimentation by the stirring device 33, and thereafter, the appropriate amount of the mixed liquid 24 is transferred by the delivery device 34. A storage step of sequentially sending to the sludge drying step by step is performed. In the case where the stirring tank 6 is not provided and the storage step is not performed, the mixed liquid 24 of the sludge and the cleaning liquid separated in the trommel 4 is directly sent to the sludge drying device 7, and the sludge drying step is performed. . In this case, although not shown, a mixed liquid recovery section configured in the same manner as the cleaning liquid recovery section 27 of the aggregate drying apparatus 5 and the mixed liquid 24 recovered by the mixed liquid recovery section are transferred to the sludge drying apparatus 7. A configuration having a feeding pipe is provided in place of the stirring tank 6 and the delivery device 34.

As shown in FIG. 7, the sludge drying device 7 is formed in a bag shape capable of storing the mixed liquid 24 of the sludge and the cleaning liquid, and a bag-shaped filter that allows only the cleaning liquid contained in the mixed liquid 24 to pass therethrough. 37 and the bag-shaped filter 37
And a cleaning liquid recovery unit 38 for recovering the cleaning liquid that has passed through. The bag-like filter 37 is detachably attached to the main body 39 of the sludge drying device 7 for taking out sludge after removing the cleaning liquid from the mixed liquid 24. Further, as the bag-shaped filter 37, the same one as the bag-shaped filter 26 of the aggregate drying device 5 can be used. That is, the bag-shaped filter 37
Is a bag-like filter formed of a very fine sheet that allows only a liquid to pass through, and is desirably a strong material so that it can be used repeatedly. Specifically, bags used for sandbags can be suitably used because they are durable and do not allow soil to pass through. The size of the bag-shaped filter 37 is set to a size that can secure at least a capacity capable of accommodating at least the mixed liquid 24 of the sludge and the cleaning liquid discharged per day by the agitator cleaning waste liquid treatment apparatus 1 according to the present invention. It is desirable. This is the bag-like filter 3
It usually takes about 12 hours to remove the cleaning liquid from the mixed liquid 24 stored in 7, and the removal of the sludge after removing the cleaning liquid from the mixed liquid 24 is performed at most a day. This is because it is desirable to do it within one time.

The washing liquid collecting section 38 is provided below the bag filter 37 for collecting the washing liquid that has passed through the bag filter 37. The shape of the washing liquid collecting part 38 is larger than the horizontal cross section of the bag-shaped filter 37 containing the mixed solution 24 so that all the washing liquid falling through the bag-shaped filter 37 can be collected. In order to discharge the collected cleaning liquid from a cleaning liquid discharge pipe 30 described later, the cleaning liquid discharge pipe 30
Is formed so that the connection portion 41 with the bottom becomes the lowest. Specifically, here, the cleaning liquid recovery section 38 is formed in the shape of the lowest dish at the center, and the cleaning liquid discharge pipe 30 is connected to the center. As can be seen from the above description, as the sludge drying device 7, a device having exactly the same configuration as the aggregate drying device 5 can be used.
However, since the amount of the mixed liquid 24 of the sludge and the cleaning liquid discharged from the agitator 9 is larger than that of the aggregate 11, the bag-shaped filter 3 of the sludge drying device 7 is used.
It is necessary to increase the capacity of the aggregate drying device 5
In some cases, the same filter as the bag-shaped filter 26 may have insufficient capacity. In such a case, a plurality of sludge drying devices 7 may be arranged to cope with the situation. In the sludge drying device 7, the mixed liquid 2 of the sludge and the cleaning liquid is used.
A sludge drying step of removing the cleaning liquid from 4 is performed.
That is, the mixed liquid 24 of the sludge and the cleaning liquid separated in the separation step and sequentially sent through the storage step.
Is stored in the bag-shaped filter 37 and allowed to stand for a certain period of time, so that only the cleaning liquid is exuded and the mixture 2
The cleaning liquid is removed from 4 and the leached cleaning liquid is dropped and collected in the cleaning liquid collecting section 38.

As shown in FIG. 1, the washing liquid collecting sections 27 and 38 of the aggregate drying apparatus 5 and the sludge drying apparatus 7 have a washing liquid discharge pipe 30 for discharging the collected washing liquid.
Are connected respectively. These cleaning liquid discharge pipes 30
Is connected to the lowest part of the cleaning liquid collecting sections 27 and 38 as described above, and is connected to the cleaning liquid collecting sections 27 and 38.
The cleaning liquid collected in the step (1) moves to the lower side and flows into the cleaning liquid discharge pipe 30. These cleaning liquid discharge pipes 30 are gathered in a single line on the downstream side, and the collected cleaning liquid is collectively discharged into one pipe. Further downstream of the cleaning liquid discharge pipe 30, a branch 4
The cleaning liquid discharge pipe 30 branches into two pipes at the branch portion 42, one of which serves as a first discharge pipe 43 for sending the cleaning liquid to the stirring tank 6, and the other. Is a second pipe for sending the cleaning liquid to the auxiliary tank 8.
It becomes the discharge pipe 44. The branch part 42 is provided with a switching valve 45 for selectively switching the flow path of the cleaning liquid to the first discharge pipe 43 or the second discharge pipe 44. An auxiliary tank 8 is provided downstream of the second discharge pipe 44 and accommodates the cleaning liquid 46 that has passed through the second discharge pipe 44. The auxiliary tank 8 is provided with a take-out device 47 that can take out the cleaning liquid 46 as needed. Here, the removal device 47 includes a removal pipe 48 and a removal pump 49 for removing the cleaning liquid from the auxiliary tank 8,
And an operating valve 50.
By operating 0, the take-out pump 49 is operated and a required amount of the washing liquid 46 is taken out from the outlet of the take-out tube 48.

The washing liquid discharge pipe 30, the first discharge pipe 43 and the second discharge pipe 44 branched from the cleaning liquid discharge pipe 30, the switching valve 45, the auxiliary tank 8, and the already described aggregate drying apparatus 5. And in a portion of the sludge drying device 7 that includes the cleaning liquid recovery units 27 and 38, recovers the cleaning liquid that has oozed through the bag-shaped filters 26 and 37 in the aggregate drying step and the sludge drying step, Normally, it is sent to the stirring tank 6 for recirculation, and when the stirring tank 6 is full, it is sent to the auxiliary tank 8 instead of the stirring tank 6, and once stored in the auxiliary tank 8,
A cleaning liquid treatment step of taking out and reusing it for kneading concrete is performed. That is, the cleaning liquid collected in the cleaning liquid recovery units 26 and 37 of the aggregate drying device 5 and the sludge drying device 7 flows through the cleaning liquid discharge pipe 30 and reaches the switching valve 45. The switching valve 4
5 is set so as to flow to the first discharge pipe 43 during normal times, and the cleaning liquid is sent to the stirring tank 6 and recirculated. In this way, the fluidity of the mixed solution 24 is ensured by supplementing the water content of the mixed solution 24 evaporated during the stirring in the stirring tank 6. In addition, the stirring tank 6
Is full, the switching valve 45 is connected to the second discharge pipe 44.
The cleaning liquid is sent to the auxiliary tank 8. In the auxiliary tank 8, the cleaning liquid 46 is temporarily stored, and when a certain amount is accumulated, the removal device 4 is removed.
It is taken out by 7 and reused by using it for kneading concrete. It is also possible to throw a neutralizing agent into the cleaning liquid 46 to neutralize it and then to discard it.

In the present embodiment, the cleaning liquid 46 contained in the auxiliary tank 8 is used for kneading concrete so that it can be poured into the agitator 9 of the concrete mixer 15 as shown in FIG. The outlet of the take-out pipe 48 of the take-out device 47 is provided at a position near the inlet 56 of the agitator 9 of the truck mixer 15. Further, the operation of the switching valve 45 may be performed manually or automatically, but in the case of automatic operation, a sensor for detecting the water level is provided in the stirring tank 6 so that the stirring tank 6 becomes full. It is preferable to automatically switch the flow path of the cleaning liquid to the second discharge pipe 44 upon detecting the fact. Here, a cleaning liquid stirring device 52 is provided in the auxiliary tank 8 in order to keep the cleaning liquid 46 stored in the auxiliary tank 8 uniform. The cleaning liquid stirring device 52 may not be provided.

Next, an agitator cleaning processing system and an agitator cleaning processing method according to an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, an agitator cleaning processing system according to an embodiment of the present invention includes an agitator 9 in addition to the agitator cleaning waste liquid processing apparatus 1 described above.
And a truck mixer 15 having a cleaning liquid tank 53 and a liquid feed pipe 54 and a valve 55 for feeding the cleaning liquid in the cleaning liquid tank 53 into the agitator 9 as necessary. In the agitator cleaning processing system according to the present invention, unlike the conventional cleaning method of flushing the inside of the agitator 9 with water, the cleaning liquid comprising a concrete stabilizer having an action of temporarily stopping the hydration reaction of concrete is supplied to the agitator 9. And a cleaning method for cleaning the agitator 9 by preventing concrete from adhering to the inner surface of the agitator 9. Therefore, the amount of the cleaning liquid necessary for cleaning the agitator 9 is very small as compared with the amount of water in the conventional cleaning method, and can be set to an amount that can be accommodated in the cleaning liquid tank 53 provided in the concrete mixer 15. Specifically, while the conventional cleaning method requires about 2000 liters of water to clean one truck mixer 15, the agitator cleaning processing system according to the present invention uses the necessary cleaning liquid. The volume is about 50 liters, about 1/40
In the amount.

The cleaning liquid tank 53 contains a cleaning liquid composed of a concrete stabilizer having a function of temporarily stopping the hydration reaction of concrete. And
As shown in FIG. 8, a liquid feed pipe 54 that connects the cleaning liquid tank 53 and the agitator 9 is provided, and a valve 55 is provided in the middle of the flow path of the liquid feed pipe 54. The cleaning liquid in the cleaning liquid tank 53 can be sent to the agitator 9 by operating. The capacity of the cleaning liquid tank 53 is:
The size of the agitator 9 is set so as to be able to contain a cleaning liquid necessary for one time of cleaning. In the present embodiment, the volume is set to 50 liters, but an optimal volume is appropriately set according to the concentration of the cleaning liquid and the size of the agitator 9. In addition, since the main body of the agitator 9 rotates, the end of the liquid feed pipe 54 on the agitator 9 side is connected to a fixed portion 57 of the central axis of the agitator 9, from which the cleaning liquid is sent into the agitator 9. It has a structure that can be used.

In the agitator cleaning method according to the present embodiment, the concrete mixer 15 accommodates concrete in the agitator 9 and accommodates the cleaning liquid in the cleaning liquid tank 53 and goes to a construction site or the like. Then, after discharging the concrete in the agitator 9 using the concrete at the construction site or the like, the valve 55 is loosened and the cleaning liquid in the cleaning liquid tank 53 is sent to the agitator 9. Thereafter, the agitator 9 is rotated while the concrete mixer 15 moves to the installation location of the agitator cleaning waste liquid treatment apparatus 1, and the supplied cleaning liquid acts on the residual concrete in the agitator 9 to remove the agitator 9. The agitator 9 is washed by preventing concrete from adhering to the inner surface. Then, the cleaning waste liquid 10 after the cleaning is introduced into the agitator cleaning waste liquid processing apparatus 1, and the cleaning waste liquid 10 is processed by the agitator cleaning waste liquid processing method described above.

[0037]

As described above, according to the first aspect of the present invention,
According to the agitator washing waste liquid treatment apparatus described in the above, since the washing method of washing the agitator using a washing liquid consisting of a concrete stabilizer having a function of temporarily stopping the hydration reaction of concrete is used, conventionally, a large amount Since the water for cleaning that was necessary for the cleaning is unnecessary, and the cleaning can be performed with only a small amount of the cleaning liquid, the amount of the cleaning waste liquid discharged after the cleaning of the agitator can be significantly reduced as compared with the related art. it can. Therefore, as an agitator cleaning waste liquid treatment apparatus, the amount of cleaning waste liquid to be treated at a time can be reduced, so that the size of the entire apparatus can be reduced, the installation area of the apparatus can be reduced, and the apparatus itself can be reduced. Costs and equipment installation costs can be reduced.

Further, by providing a transport drum conveyor having a cylindrical drum that is driven to rotate in the circumferential direction, the cleaning waste liquid transported on the transport drum conveyor is agitated by the rotation of the cylindrical drum, and the cleaning waste liquid is removed. While the solids such as the contained aggregate repeatedly collide with each other,
The sludge such as cement adhered to the aggregate is peeled off by rubbing against the conveying surface of the cylindrical drum. Therefore, the aggregate to which sludge does not adhere can be easily separated from the washing waste liquid, and the aggregate removed from the agitator washing waste liquid treatment apparatus according to the present invention can be reused as an aggregate when kneading concrete as it is. Can be used.

Further, by providing an aggregate drying device having a bag-shaped filter that allows only the washing liquid to pass, the washing liquid attached to the aggregate separated from the washing waste liquid can be removed, and the aggregate can be dried. Can be easily reused as aggregate when kneading concrete.

Further, by providing a sludge drying device having a bag-shaped filter that allows only the cleaning liquid to pass through, the cleaning liquid can be removed from the mixture of the sludge and the cleaning liquid separated in the trommel with a device having a very simple configuration. Therefore, a dehydrating apparatus having a complicated configuration which has been conventionally used is not required, so that the equipment cost can be reduced and the maintenance work of the apparatus can be reduced.

According to the agitator cleaning waste liquid treatment apparatus according to the second aspect of the present invention, a stirring apparatus having a tank for holding a mixed liquid of sludge and a cleaning liquid, and a stirring apparatus for preventing the sludge from settling. A tank and a delivery device for sequentially sending out the mixed solution contained in the stirring tank to the sludge drying device in an appropriate amount are separated from a washing waste liquid discharged one after another from an agitator such as a truck mixer. The mixed liquid is temporarily stored without settling, and can be sent to a sludge drying device in an appropriate amount, so that the removal of the cleaning liquid from the mixed liquid of the sludge and the cleaning liquid in the sludge drying device can be performed under appropriate conditions. it can.

According to the agitator washing waste liquid treatment apparatus according to the third aspect of the present invention, the agitator washing waste liquid treatment apparatus is connected to the washing liquid collecting sections of the aggregate drying apparatus and the sludge drying apparatus, respectively, and is assembled into one at the downstream thereof. A cleaning liquid discharge pipe, a first discharge pipe for branching from the cleaning liquid discharge pipe at the branch portion and feeding the cleaning liquid to the stirring tank, and a cleaning liquid branching from the cleaning liquid discharge pipe at the branch section and sending the cleaning liquid to the auxiliary tank. A second discharge pipe for the
A switching valve for selectively switching the flow path of the cleaning liquid to a first discharge pipe or a second discharge pipe, and a storage valve for storing the cleaning liquid passing through the second discharge pipe and removing the cleaning liquid as necessary. By providing an auxiliary tank provided with a take-out device, the washing liquid recovered in the aggregate drying device and the sludge drying device is usually sent to the stirring tank for recirculation, and evaporated during stirring in the stirring tank. While supplementing the water content of the mixed solution to ensure the fluidity of the mixed solution, and when the stirring tank is full, instead of the stirring tank, it is sent to an auxiliary tank, and once stored in the auxiliary tank,
It can be reused by appropriately taking it out by the take-out device and using it for kneading concrete.

According to the agitator cleaning waste liquid treatment apparatus according to the fourth aspect of the present invention, the agitator cleaning waste liquid processing apparatus has an upper surface opening for recovering the cleaning waste liquid discharged from the agitator, and the lowermost discharge port is provided. By providing a collecting chute connected to the input port of the transport drum conveyor, the washing waste liquid discharged from the agitator such as a truck mixer can be easily collected and sent to the transport drum conveyor.

According to the agitator cleaning waste liquid treatment apparatus of the present invention, the cleaning waste liquid is provided by providing an opening / closing valve for opening and closing the flow path of the cleaning waste liquid downstream of the discharge port of the recovery chute. Liquid and solids are simultaneously sent to the conveyor drum conveyor, so that only liquids such as washing liquid flow first, and solids such as aggregates and sludge contained in the washing waste liquid are collected by the collecting chute. Can be prevented from being left behind and becoming difficult to flow.

According to the agitator cleaning treatment system of the present invention, a cleaning liquid tank containing a cleaning liquid comprising an agitator and a concrete stabilizer having a function of temporarily stopping a hydration reaction of concrete,
A truck mixer having a liquid feed pipe and a valve for feeding the cleaning liquid in the cleaning liquid tank into the agitator as needed, and the agitator cleaning waste liquid treatment apparatus according to claim 1, 2, 3, 4, or 5. By providing, after discharging the concrete in the agitator at a construction site or the like, the agitator can be washed while moving to the place where the agitator washing waste liquid treatment device is usually installed in a garage or the like, so that the garage can be cleaned. There is an advantage that the agitator cleaning time after returning to the home is zero. Further, by performing washing of the agitator using the washing solution, water for washing which was conventionally required in a large amount becomes unnecessary, and washing can be performed with only a small amount of the washing solution, thereby saving water resources. be able to. Furthermore, since the concrete does not adhere to the inside of the agitator and hardens due to the action of the cleaning liquid, the inside of the agitator can be hardly suspended.

According to the agitator cleaning waste liquid treatment method of the present invention, the agitator is cleaned using a cleaning liquid comprising a concrete stabilizer having a function of temporarily stopping the hydration reaction of concrete. Since the method is used, water for cleaning which was conventionally required in a large amount is not required, and cleaning can be performed with only a small amount of the cleaning liquid. It can be very small in comparison. Therefore, it is possible to reduce the size of the apparatus for implementing the agitator cleaning waste liquid treatment method, to reduce the installation area of the apparatus, and to reduce the cost of the apparatus itself and the installation cost of the apparatus.

Also, the method has a peeling step of peeling off sludge such as cement adhered to aggregates contained in the washing waste liquid by stirring the washing waste liquid and rubbing solids contained in the washing waste liquid. Since the aggregate having no sludge attached thereto can be easily separated from the washing waste liquid, the aggregate obtained by performing the method for treating an agitator washing waste liquid according to the present invention and kneading concrete as it is as the aggregate is removed. Can be reused as

[0048] Further, by being stored in a bag-shaped filter which is formed in a bag shape and allowing only the liquid to pass through, and left for a certain period of time, only the cleaning liquid is exuded to remove the cleaning liquid attached to the aggregate. By having the step, the washing liquid attached to the aggregate separated from the washing waste liquid can be removed, and the aggregate can be taken out in a dry state, so that it can be easily used as an aggregate when kneading concrete. Can be reused.

Further, the cleaning liquid is formed into a bag from a mixture of the sludge and the cleaning liquid separated in the separation step, and is accommodated in a bag-shaped filter through which only the liquid is allowed to pass. Has a sludge drying step of exuding the cleaning liquid from the mixed liquid, so that the removal of the cleaning liquid from the mixed liquid of the sludge and the cleaning liquid separated in the separation step can be performed by a very simple method. The dewatering device having a complicated configuration according to the conventional method is not required, so that the equipment cost can be reduced and the labor for maintenance of the device can be reduced.

According to the agitator cleaning waste liquid treatment method of the present invention, the mixed liquid of the sludge and the cleaning liquid separated in the separation step is once stored in a stirring tank provided with a stirring device, and then the mixed liquid is washed. Having a storage step of sequentially feeding an appropriate amount to the sludge drying step between the separation step and the sludge drying step, whereby the mixed liquid separated from the washing waste liquid that is sequentially discharged from an agitator such as a truck mixer is removed. Once stored without sedimentation,
Since an appropriate amount can be sent to the sludge drying step, the removal of the cleaning liquid from the mixture of the sludge and the cleaning liquid in the sludge drying step can be performed under appropriate conditions.

According to the agitator cleaning waste liquid treatment method according to the ninth aspect of the present invention, the cleaning liquid exuded through the bag-shaped filter in the aggregate drying step and the sludge drying step is recovered, and usually, the cleaning liquid is removed. The washing liquid is sent to the stirring tank and recirculated. When the stirring tank is full, the washing liquid is sent to an auxiliary tank instead of the stirring tank, and once stored in the auxiliary tank, taken out and used for kneading concrete. By having a washing liquid treatment step, the washing liquid collected in the aggregate drying step and the sludge drying step is recirculated to compensate for the water content of the mixed liquid evaporated during stirring in the storage step in the stirring tank, and the mixing is performed. In addition to ensuring the fluidity of the liquid, the cleaning liquid is once stored in the auxiliary tank, and when a certain amount is accumulated, mixing of the concrete is performed. It can be reused by the use to.

According to the agitator cleaning method of the tenth aspect of the present invention, a cleaning liquid comprising a concrete stabilizer having a function of temporarily stopping a hydration reaction of concrete is previously loaded on a concrete mixer. The concrete in the agitator is discharged, and the washing liquid is poured into the agitator for washing, and the washing waste liquid after washing the agitator is treated by the agitator washing waste liquid treatment method according to claim 7, 8, or 9. After discharging the concrete in the agitator at the construction site,
Since the agitator can be washed while moving to the place where the agitator washing waste liquid treatment apparatus is usually installed in a garage or the like, there is an advantage that the agitator washing time after returning to the garage becomes zero. Further, by performing washing of the agitator using the washing solution, water for washing which was conventionally required in a large amount becomes unnecessary, and washing can be performed with only a small amount of the washing solution, thereby saving water resources. be able to. Furthermore, since the concrete does not adhere to the inside of the agitator and hardens due to the action of the cleaning liquid, the inside of the agitator can be hardly suspended.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an agitator cleaning waste liquid processing apparatus and an agitator cleaning processing system according to the present invention.

FIG. 2 is a perspective view showing an example of a collection chute of the agitator cleaning waste liquid treatment device according to the present invention.

FIG. 3 is a cross-sectional view showing a collection chute and an opening / closing valve of the agitator cleaning waste liquid processing apparatus according to the present invention.

FIG. 4 is a view showing a transport drum conveyor and a trommel of the agitator cleaning waste liquid treatment apparatus according to the present invention.

FIG. 5 is a diagram showing an aggregate drying device of the agitator cleaning waste liquid treatment device according to the present invention.

FIG. 6 is a view showing a stirring tank of the agitator cleaning waste liquid treatment apparatus according to the present invention.

FIG. 7 is a diagram showing a sludge drying device of the agitator cleaning waste liquid treatment device according to the present invention.

FIG. 8 is a view showing a concrete mixer according to the agitator cleaning processing system according to the present invention.

FIG. 9 is an explanatory diagram showing an agitator cleaning waste liquid processing apparatus according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Agitator washing waste liquid treatment apparatus 2 Collection chute 3 Drum conveyor 4 Trommel 5 Aggregate drying apparatus 6 Stirrer tank 7 Sludge drying apparatus 8 Auxiliary tank 9 Agitator 10 Washing waste liquid 11 Aggregate 15 Truck mixer 21 Cylindrical drum 22 Drive unit 23 Cylindrical Sieve 24 Mixed liquid of sludge and cleaning liquid 26 Bag-shaped filter of aggregate drying device 27 Cleaning liquid recovery unit of aggregate drying device 30 Cleaning liquid discharge pipe 32 Belt conveyor 33 Stirring device 34 Sending device 37 Bag-shaped filter of sludge drying device 38 Sludge drying Cleaning liquid recovery unit 42 Branch unit 43 First discharge pipe 44 Second discharge pipe 45 Switching valve 46 Cleaning liquid 47 Extraction device 52 Cleaning liquid stirring device 53 Cleaning liquid tank 54 Liquid feed pipe 55 Valve 58 Open / close valve

Claims (10)

(57) [Claims] 1. A washing method comprising a concrete stabilizer having a function of temporarily stopping a hydration reaction of concrete is poured into an agitator to prevent the concrete from adhering to the inner surface of the agitator, thereby washing the agitator. An agitator cleaning waste liquid treatment device for processing a cleaning waste liquid mainly composed of sludge, aggregate, and a cleaning liquid discharged from the agitator when the cleaning method is performed, and transporting the inner surface of the cleaning waste liquid. Surface, and arranged so as to be inclined so that the traveling direction of the washing waste liquid is low,
A transport drum conveyor having a cylindrical drum that is driven to rotate in the circumferential direction; and an aperture connected to the transport drum conveyor, the aperture not allowing passage of aggregate having a certain particle size or more among components contained in the washing waste liquid. A trommel that is disposed so as to be inclined so that the direction of travel of the washing waste liquid is low, has a cylindrical sieve that is driven to rotate in the circumferential direction, and separates the washing waste liquid into aggregate, sludge, and washing liquid. And a bag-shaped filter formed in a bag shape capable of accommodating the aggregate separated by the trommel, and passing only the washing liquid attached to the aggregate, and the bag-shaped filter for collecting the passed washing liquid. An aggregate drying device having a washing liquid recovery unit provided below the washing machine; and a bag formed into a bag shape capable of storing a mixed solution of the sludge and the washing solution separated by the trommel, and the washing contained in the mixed solution. An agitator cleaning waste liquid processing apparatus, comprising: a bag-shaped filter that allows only the liquid to pass therethrough; and a sludge drying device having a cleaning liquid recovery unit provided below the bag-shaped filter for recovering the passed cleaning liquid. . 2. A stirring tank installed below the trommel, the tank containing a mixture of the sludge and the cleaning liquid separated by the trommel, and a stirring device for preventing the sludge from settling. 2. The agitator cleaning waste liquid treatment apparatus according to claim 1, further comprising: a delivery device for sequentially delivering an appropriate amount of the mixed solution contained in the stirring tank to a sludge drying device. 3. A cleaning liquid connected to each of the cleaning liquid recovery sections for discharging the cleaning liquid collected in the cleaning liquid recovery sections of the aggregate drying apparatus and the sludge drying apparatus, and being collected downstream of the cleaning liquid collection section. A discharge pipe, a first discharge pipe for branching from the cleaning liquid discharge pipe at the branch part and sending the cleaning liquid to the stirring tank, and a branch pipe from the cleaning liquid discharge pipe for sending the cleaning liquid to the auxiliary tank at the branch part. A second discharge pipe, a switching valve provided in the branch portion, for selectively switching a flow path of the cleaning liquid to a first discharge pipe or a second discharge pipe, and containing the cleaning liquid passing through the second discharge pipe. And an auxiliary tank provided with a take-out device for taking out the washing liquid as needed.
The agitator cleaning waste liquid treatment apparatus according to the above. 4. A transfer chute having a top opening for collecting the washing waste liquid discharged from the agitator and having a discharge port provided at a lowermost portion connected to an input port of the transport drum conveyor. The agitator cleaning waste liquid treatment apparatus according to claim 1, 2, or 3. 5. An agitator cleaning waste liquid treatment apparatus according to claim 4, wherein an opening / closing valve for opening and closing a flow path of said cleaning waste liquid is provided downstream of an outlet of said recovery chute. 6. A cleaning liquid tank containing a cleaning liquid comprising an agitator and a concrete stabilizer having a function of temporarily stopping a hydration reaction of concrete, and a cleaning liquid in the cleaning liquid tank is charged into the agitator as required. An agitator cleaning processing system, comprising: a truck mixer having a liquid feeding pipe and a valve for feeding; and the agitator cleaning waste liquid processing apparatus according to claim 1. 7. A washing method comprising a concrete stabilizer having a function of temporarily stopping a hydration reaction of concrete is poured into an agitator to prevent the concrete from adhering to the inner surface of the agitator, thereby washing the agitator. An agitator cleaning waste liquid treatment method for treating a cleaning waste liquid containing sludge, aggregate, and a cleaning liquid as main components when the cleaning method is performed, wherein the cleaning waste liquid is stirred. A peeling step of peeling sludge attached to the aggregate by rubbing solids contained in the washing waste liquid, and the washing waste liquid that has passed through the peeling step is sieved according to its particle size to have a particle size of a certain size or more. A separating step of separating the aggregate into sludge and a washing liquid, and forming the aggregate separated in the separating step into a bag shape, and passing only the liquid. Aggregate drying step to remove only the cleaning liquid attached to the aggregate by exuding only the cleaning liquid by storing in a bag-shaped filter to be passed and leaving it for a certain period of time, and the sludge and the cleaning liquid separated in the separation step. A washing liquid from the mixed liquid, formed in a bag shape, stored in a bag-shaped filter that allows only the liquid to pass through, and allowed to stand for a certain period of time, so that only the washing liquid oozes out and a sludge drying step of removing the washing liquid from the mixed liquid; And a method for treating an agitator washing waste liquid. 8. A storage step of temporarily storing a mixed liquid of the sludge and the cleaning liquid separated in the separation step in a stirring tank provided with a stirring device, and then sending the mixed liquid to the sludge drying step sequentially in an appropriate amount. The method according to claim 7, wherein the method is provided between a sludge drying step and a sludge drying step. 9. A cleaning liquid exuded through the bag-shaped filter in the aggregate drying step and the sludge drying step is collected, and in a normal state, the cleaning liquid is sent to the stirring tank for recirculation, and When full,
9. The agitator cleaning method according to claim 8, further comprising a cleaning liquid processing step of sending the cleaning liquid to an auxiliary tank instead of the stirring tank, temporarily storing the cleaning liquid in the auxiliary tank, and then taking out the kneading concrete. Waste liquid treatment method. 10. A cleaning liquid comprising a concrete stabilizer having a function of temporarily stopping a hydration reaction of concrete is previously loaded in a concrete mixer, and after the concrete in the agitator is discharged, the cleaning liquid is discharged into the agitator. An agitator cleaning treatment method, wherein the agitator cleaning waste liquid after washing the agitator is treated by the agitator cleaning waste liquid treatment method according to claim 7, 8 or 9.