JP2000343072A - Treatment of granule to which pollutant is stuck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To separate the granule free from a pollutant and large in particle size while adding water from the granule subjected to granulating treatment and to which the pollutant is stuck. SOLUTION: In the treating method, the water to be treated and containing the granule to which a pollutant is stuck is classified by using a liq. cyclone 51 after temporarily storing the water to be treated in a feed sump 40. Moreover, the treated water discharged from the upper part of the liq. cyclone 51 and containing the granule low in particle size and the treated water obtained by separating the granule large in particle size from the soil water containing the granule separated at the liq. cyclone 51 and large in particle size by a dehydrating vibrating screen 53 are returned again to the feed sump 40.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for reducing the size of granules adhering to contaminants such as soil contaminated with heavy metals and oily substances, and incineration ash discharged from an incinerator, and the above-mentioned fine granulation. The present invention relates to a method for separating a granular material containing no or most of contaminants from the granular material.

[0002]

2. Description of the Related Art In recent years, it has been considered that soil near factories such as chemical factories and metal refining factories is contaminated with heavy metals, organic chlorine compounds, oily components, and the like. Also,
Crude oil is often attached to seashore soil contaminated with crude oil spilled into the sea due to a marine accident or excavated soil carried out due to the excavation of a tunnel in a crude oil-existing ground. is there. Furthermore, combustible materials such as industrial waste and non-recyclable garbage are incinerated in an incinerator and transported to a waste disposal site as incinerated ash for burial. And contaminants such as dioxin generated during the incineration process. Therefore,
After removing the contaminants from the contaminated soil, stone, sand,
It is hoped that there will be a technology to extract and reuse fine particles, etc., and a technology to extract solid particles that can be used effectively after removing contaminants from incineration ash and to reduce the volume of incineration ash that is disposed of at the disposal site. It is rare.

[0003] Generally, incinerated ash is a granular material in which particles having a small particle size are aggregated, and contaminants such as heavy metals and dioxins are not only present on the surface of the granular material but also on individual particles. It is believed that it is attached to the surface. Contaminated soil, although clumped, has few aggregated portions, and contaminants are considered to be attached to the surface of individual particles. Accordingly, the present applicant has reduced the aggregated granular material such as incineration ash into particles of various sizes, and has eliminated contaminants such as heavy metals adhering to the surface of each particle. A grain refiner capable of separating and separating efficiently has been proposed (Japanese Patent Application No. Hei.
-310429). This is to apply the processing material that has been charged, while adding water within the processing space, and to apply the force of compression and rubbing between the granular materials to separate the incinerated ash into independent particles, and to separate the granular materials and the particles. A fine-graining means for separating foreign substances adhering to the surface is provided over a plurality of stages,
As the incineration ash passes through each of the granulating means sequentially, the processing gap of the above-mentioned granulating means is set gradually narrower in the downstream stage, and mainly in the upstream stage, aggregated granules are formed.
Performs a crushing process in which the individual particles are separated into almost independent particles without breaking, and granulated, and in the downstream stage, the above-mentioned granulated individual particles are mainly treated, mainly between the respective particles. By applying the force of the rubbing, the mutual polishing by the friction between the particles is performed, and the deflocculation process for separating the foreign substances attached to the surface of the individual particles is performed.
The material to be treated is not limited to the incinerated ash, and even in the case of the contaminated soil, the contaminants attached to the soil can be separated by the same treatment. Since the separated contaminants such as heavy metals float or dissolve in the treatment water, the contaminants are almost adhered to the large-sized particles that do not contain the contaminants in the treated particles. Not.

[0004] Treated water containing the granular material treated by the fine-granulating apparatus is temporarily stored in a liquid supply tank and then classified into various-sized granular materials by a classification means such as a hydrocyclone. At this time, since the heavy particles and dioxins are separated and made harmless, the granular material having a large particle size that does not contain pollutants is reused as aggregate for cement and the like. In addition, harmful sludge containing a large amount of fine particles such as heavy metals and dioxins is subjected to a treatment such as melting and solidification and discarded, and the sewage in which the heavy metals are dissolved or suspended is added with a chelating agent or the like to insolubilize the heavy metals. Is formed, and the heavy metals are insolubilized, thereby detoxifying the heavy metals by separating them from the treatment liquid, and reused or discarded.

[0005]

The liquid cyclone discharges treated water containing small-sized particles from the upper part and discharges muddy large-sized particles from the lower discharge port. However, in practice, in a single classification process, a part of the particles having a large particle diameter may be discharged from the upper part of the hydrocyclone. Was difficult.

SUMMARY OF THE INVENTION The present invention has been made in view of the problems in the prior art, and has been made in such a manner that particles containing no or most of contaminants are removed from granules adhering to contaminants which have been subjected to graining treatment while adding water. It is an object of the present invention to provide a method for reliably separating a granular material having a large diameter.

[0007]

According to a first aspect of the present invention, there is provided a method for treating particulate matter to which contaminants have adhered, comprising the steps of: The treated water containing the granular material stored in the liquid supply tank and sent from the lower part of the liquid supply tank is classified using a liquid cyclone, and the granular material having a small particle diameter discharged from the upper part of the liquid cyclone Treated water containing
The liquid supply tank is returned to the liquid supply tank.

[0010] In the method for treating particulate matter to which contaminants adhere, the treated water obtained by separating the particulate matter having a large particle diameter from the muddy water discharged from the lower part of the liquid cyclone is returned to the liquid supply tank. It is characterized by doing so.

According to a third aspect of the present invention, there is provided a method for treating particulate matter to which contaminants adhere, comprising a main body of a liquid supply tank for storing the finely divided particulate matter, and a seal tank communicating with upper and lower parts of the liquid supply tank. In addition, treated water containing particulate matter having a small particle diameter discharged from the upper part of the liquid cyclone is sent to the seal tank.

According to a fourth aspect of the present invention, there is provided a method for treating particulate matter to which contaminants are adhered, wherein the rotary drum includes a cylindrical rotary drum having a plurality of outer blades on an inner peripheral surface and a plurality of inner blades on an outer peripheral surface. The granular material to which the contaminants are attached is charged into the processing space between the rotary drum and the rotor of the fine-graining apparatus, which includes a rotor eccentrically mounted on the rotary drum inside the drum, and finely mixes with water. After granulation, the liquid is stored in a liquid supply tank of a liquid cyclone.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an outline of a system for treating contaminated soil according to an embodiment of the present invention.
In the figure, 18 is a receiving hopper for charging contaminated soil,
Reference numeral 19 denotes a belt conveyor that conveys the contaminated soil, and reference numeral 20 denotes a fine-granulating device that disintegrates and pulverizes the contaminated soil sent by the belt conveyor 19 while slurrying and discharging the contaminated soil. , 30 is a vibrating screen for selecting and separating particles of 5 mm or more from the contaminated soil discharged from the grain refiner 20, and 40 is a temporary storage of mud-like contaminated soil containing particles of 5 mm or less passing through the vibrating screen 30. A feed sump, which is a liquid supply tank for supplying treated water to the liquid cyclone 51, is provided with the liquid cyclone 51, and is used to classify contaminated soil sent from the feed sump 40 into particles of various sizes. Is a water supply section for supplying treated water to the granulating device 20 and the feed sump 40, and 70 is discharged from the classification means 50. A wastewater treatment unit for purifying the treated water.

The grain refining apparatus 20 includes a classifying net 21a provided at a discharge port (not shown) for catching solids such as large metals and contaminants of about 30 mm or more. Primary grinder 21 that hydrates contaminated soil conveyed by the above and performs coarse crushing treatment on the contaminated soil.
From the contaminated soil crushed by the primary granulator 21
Vibrating screen 2 for sorting and separating granular materials of 0 mm or more
2 and a vibrating screen 22 which is crushed by the primary
A secondary granulator 23 for adding water to contaminated soil that has become a granular material of 10 mm or less that has passed through the filter, and further performing crushing and peptizing treatment on the contaminated soil; A draining device 24 is provided between the refining device 23 and drains treated water including the granular material that has passed through the vibrating screen 22. The classification means 50 includes a liquid cyclone 51 for separating particles of about 50 μm or less from the mud-like contaminated soil containing the particles of 5 mm or less stored in the feed sump 40 by suspending the particles in the treatment water and separating the liquid cyclone 51. Spigot tank 5 discharged from the bottom
A dewatering vibrating screen 53 for separating particles such as fine-grained sand mainly composed of sand of about 50 μm or more from the slurry primarily stored in Step 2, and treated water in which fine particles supplied from the upper part of the feed sump 40 are floating A thickener tank 54 for coagulating and sedimenting the solid matter of
Tank 55 for storing the slurry precipitated at the bottom of the tank
And a dehydrator 56 for dehydrating the slurry stored in the slurry tank 55. The sewage treatment section 70 includes a treatment water tank 71 for insolubilizing heavy metals dissolved or floating in the treatment water,
And a liquid filtration device 72 for filtering the treated water by filtering heavy metals and the like or oily components insolubilized with the adsorbent.

FIGS. 2A and 2B show the structure of the primary granulator 21. FIG. 2A is a side view, and FIG.
It is A sectional drawing. The primary grain refiner 21 is attached to the inner peripheral surface in the axial direction, and has a cylindrical rotating drum 11 having a plurality of outer blades 11W protruding in the center direction, and attached to the outer peripheral surface in the axial direction. A rotor 12 having a plurality of radially projecting inner blades 12W and eccentrically mounted inside the rotary drum 11; and an annular gear 13 provided on the outer circumference of the rotary drum 11 The rotating shaft 15 is rotated in opposite directions to each other by a drive mechanism 16 to apply compressive and shear stress to the processing material S (hatched portion in FIG. 8B) input from the material input port 17 to perform the above-described processing. The material S is crushed or deflocculated. The magnitude of the stress acting on the processing material mainly depends on the distance between the rotating drum 11 and the rotor 12 (the eccentricity of the rotor 12) and the rotating drum 11 And low It is to be adjusted by the respective rotational speeds of 12. The configuration of the secondary granulator 23 is almost the same as that of the primary granulator 21 described above.

A primary refining machine 2 for coarsely crushing contaminated soil
1, as shown in FIG. 3 (a), with a relatively wide spacing D ₁ of the the rotary drum 11 and the rotor 12 by reducing the eccentricity of the rotor 12, and the rotational speed and low speed. Further, as shown in FIG. 3B, the secondary fine-granulating machine 23 mainly for peptizing the contaminated soil is
The eccentric amount is increased to narrow the distance D ₂ between the rotary drum 11 and the rotor 12, further, a rotational speed said primary granules machine 2
As shown in FIG. 4, the rotor diameter on the downstream side is made larger than the rotor diameter on the upstream side so that the treatment gap of the contaminated soil becomes discontinuous and narrow in the downstream direction. It is configured.

As shown in FIG. 5, the rotary drum 11, which is a processing gap,
Soil P introduced into the gap between the rotor and the rotor 12 is lifted up by the outer blades 11W of the rotating drum 11 and pulled down by the inner blades 12W of the rotor 12, so that the contaminated soil P has compressive stress. At the same time, a shear stress acts, and the aggregated granular material of the contaminated soil is pulverized and peptized. That is, as shown in FIG. 6A, the aggregated granular materials P or the particles of the contaminated soil in which the particles p are fixed to each other on the fixing surface r and are in the aggregated state are not fixed. When compressive stress and shear stress act on the large-sized particles p, each of the aggregated granular materials P is separated from the fixing surface r and granulated into almost independent fine particles p (solution). Crushing action)
The contaminants q such as heavy metals that are relatively weakly attached to the surface of each of the granular materials P are separated. Further, as shown in FIG. 6B, when a force in the direction of rubbing acts on the granular material or the particles, the contaminants q such as heavy metals attached to the surface of each particle p are separated and separated from the particle p. (Peptizing action), and the separated contaminants q float or dissolve in the treated water. In the treatment of the contaminated soil, it is considered that the soil particles are less likely to be agglomerated. Therefore, both the primary granulator 21 and the secondary granulator 23 shown in FIG.
The peptizing action shown in FIG.

As shown in FIG. 7, the liquid cyclone 51 injects liquid containing various-sized particles at high speed onto the inner wall of a cylindrical main body 51a, and the liquid is swirled by a vortex called a primary rotational flow. When moving downward along the inner wall of the main body 51a while forming V1, the pressure in the center of the main body 51a decreases, and the liquid forms a vortex V2 called a secondary rotational flow while forming the primary rotational flow V1. This is a classifier utilizing the phenomenon that the body 51a is lifted from the inside of the body. The particles having a large particle diameter contained in the liquid introduced into the hydrocyclone 51 are moved downward while colliding with the inner wall of the main body 51a by the primary rotation flow V1, and are discharged from the outlet pipe 51b together with a part of the liquid. Is discharged. On the other hand, the particles having a small particle diameter are carried by the secondary rotation flow V2 and move upward of the main body, are sucked into the rising pipe 51c, are discharged from the upper part of the main body 51a, and are fed through a transfer pipe 51d. Returned to sump 40. In this case, particles having a large particle diameter may be sucked into the rising pipe 51c and discharged from the upper part of the liquid cyclone 51.

FIG. 8A is a schematic diagram showing an example of the configuration of a feed sump 40 which is a liquid supply device according to the present invention. The feed sump 40 is 5 mm or less sent from the vibrating screen 30 or the like. A feed sump main body 41 for storing mud-like contaminated soil containing particles, and a partition wall 42 communicating with the feed sump main body 41 at upper and lower portions, and having a small particle diameter discharged from the upper part of the liquid cyclone 51. A seal tank 43 for storage, a pump 40P for pumping treated water containing large-diameter particles at the bottom of the feed sump body 41 to the liquid cyclone 51, and an introduction for sending the supernatant of the seal tank 43 to the thickener tank 54. And a passage 44. Here, reference numeral 42a denotes an upper connection port of the partition wall 42, and as shown in FIG.
From 2a, the liquid moves to the seal tank 43, and the supernatant liquid of the seal tank 43 is sent to the thickener tank 54 through the introduction passage 44. Also, the feed sump body 4
The slurry containing the large-diameter particles at the bottom of 1 is sent to the hydrocyclone 51 by the pump 40P and classified again.

Next, the method for treating contaminated soil according to the present invention will be described. The contaminated soil put into the receiving hopper 18 is conveyed by the belt conveyor 19 and put into the primary granulator 21 of the granulator 20. In the primary refining machine 21,
The introduced contaminated soil is coarsely crushed while being hydrated in a relatively large processing space, and the contaminated soil is separated without destruction of individual particles, and the contaminated soil is separated by the primary fine-granulating machine 21. It is moved downstream, and discharged from a discharge port (not shown). At this time, fine particles such as heavy metals that are weakly attached to the surface of the contaminated soil are peeled off and float in the treated water.
Also, heavy metals that are easily dissolved dissolve in the above treated water. Solid matter such as large metals and contaminants discharged from the primary granulator 21 is captured and removed by a classifying net 21a of about 30 mm, and contaminated soil that has become a granular body of about 30 mm or less is removed. It is sent to the vibrating screen 22 and sieved.
Granules of 0-30 mm are separated. Vibrating screen 2
The treated water containing the granular material of 10 mm or less that has passed through 2 is subjected to a draining treatment by a draining device 24, and then sent to a secondary fine-granulating machine 23. The wastewater containing fine particles discharged from the draining device 24 is sent to the feed sump 40 and temporarily stored.

As described above, since the secondary granulator 23 has a higher stress acting on the contaminated soil than the primary granulator 1, the solution mainly due to the mutual friction between the individual particles of the contaminated soil is used. By the glue action, fine particles of heavy metals that are strongly attached to highly viscous carbon, oily components, or individual particles of contaminated soil can be released. At this time, the secondary refiner 23
In the method, the peptizing treatment is performed by adding appropriate water to the drained treatment material so that the individual particles of the contaminated soil can rub against each other. In addition, in the above treatment, heavy metals that are easily dissolved are dissolved in the above treated water, and contaminants such as carbon, oily components, and heavy metals that strongly adhere to individual particles of the contaminated soil are separated from the particles. It floats in the treated water, and is discharged from the outlet of the secondary granulator 23 together with the crushed and peptized contaminated soil. In addition, the secondary grain refiner 23 is configured such that the rotor diameter on the downstream side is larger than the rotor diameter on the upstream side, and the processing gap of the contaminated soil is discontinuous and narrow in the downstream direction. Some of the processing material does not flow smoothly to the downstream side, and some of the processing material is returned to the upstream side and stays there, so that the peptizing treatment of the processing material further proceeds.

The slurry of the contaminated soil and the particles such as sand and gravel discharged from the secondary grain refiner 23
The particles having a size of 5 mm or more are sieved, and the granules having a size of 5 mm or less are temporarily stored in a feed sump 40 and then sent to a classification means 50 to be classified into granules having various sizes. Among the mud-like contaminated soil containing particles of 5 mm or less stored in the feed sump 40, the slurry containing the large-diameter particles at the bottom of the feed sump 40 is sent to the liquid cyclone 51 of the classification means 50 and classified. Is done. In the hydrocyclone 51, fine particles having a particle size of about 50 μm or less are floated and separated in the treated water, and the treated water containing the fine particles is transferred to the transfer pipe 51.
While returning to the feed sump 40 via d, the slurry containing a large amount of solids and having a large particle diameter discharged from the spigot nozzle 4 at the bottom of the hydrocyclone 51 is sent to the spigot tank 52 and temporarily stored. After the particles (fine-grained sand) mainly composed of sand of about 50 μm or more are separated by the dehydrating vibrating screen 53,
It is returned to the seal tank 43 of the feed sump 40. The supernatant liquid of the seal tank 43 is sent to the thickener tank 54 through the introduction passage 44. Thus, treated water containing fine particles classified by the liquid cyclone 51,
The treated water from which the fine-grained sand has been separated by the dewatering vibrating screen 53 is returned to the feed sump 40, and the slurry containing large particles at the bottom of the feed sump 40 is classified again by the liquid cyclone 51, The supernatant of the sump 40 is sent to a thickener tank 54. Therefore, the treated water containing only the fine particles can be supplied to the thickener tank 54.

In the thickener tank 54, the treated water containing the fine particles supplied from the introduction passage 44 of the feed sump 40 is slowly rotated in the tank to perform solid-liquid separation for coagulating and sedimenting solids in the treated water. . As described above, heavy metals and oily components separated from the contaminated soil are dissolved or suspended in the supernatant liquid of the thickener tank 54, so that the supernatant liquid is sent to the treatment water tank 71 of the sewage treatment section 70 for treatment. In the treatment water tank 71, the heavy metals are separated from the treatment liquid by adding a chelating agent or the like to form an insolubilizing salt of the heavy metals and insolubilize the heavy metals. On the other hand, the slurry-like contaminated soil settled at the bottom of the thickener tank 54 is temporarily stored in a slurry tank 55 and then sent to a dehydrator 56 to be dehydrated, and a dewatered cake is prepared by a filter press (not shown). Dehydrator 5
The treated water dehydrated in Step 6 is also sent to the treated water tank 71 to insolubilize heavy metals, and then sent to the liquid filtration device 72.
In the liquid filtration device 72, the treated water is filtered with an adsorbent such as activated carbon to remove and purify heavy metals, and the adsorbent capturing the heavy metals is sent to a final disposal site for treatment.

As described above, in the present embodiment, the treated water containing the particulate matter to which the contaminants are attached is temporarily stored in the feed sump 40, and then classified using the liquid cyclone 51. Of separating the large-grained particles with dewatering vibration screen 53 from the treated water containing the small-grained particles discharged from the water and the muddy water containing the large-particles separated by the liquid cyclone 51 The water is returned to the feed sump 40 again,
Since the slurry containing the large-diameter particles at the bottom of the feed sump 40 is classified again by the hydrocyclone 51, the large-particles discharged from the upper part of the hydrocyclone 51 are reliably classified. Can be. Further, a granular material such as contaminated soil is provided on the inner peripheral surface with a plurality of outer blades 11.
W having a cylindrical rotary drum 11 having a plurality of inner blades 12W and a rotor 12 having a plurality of inner blades 12W on its outer peripheral surface and being eccentrically mounted inside the rotary drum 11;
And pulverization and pulverization by the secondary granulator 23,
Not only can the granules be efficiently granulated, but also foreign substances adhering to individual particles of the granules can be reliably and efficiently separated.

In the above embodiment, a method for treating contaminated soil has been described. However, even when the material to be treated is incinerated ash or contaminated soil containing incinerated ash, the same treatment system can be used. In this case, since the incinerated ash is agglomerated, the primary and secondary granulators 21 and 2
No. 3 performs the crushing and peptizing action as shown in FIGS. 6A and 6B on the processing material. Further, in the above example, the granular material to which the contaminants adhered after being pulverized and pulverized by the pulverizer 20 having the primary pulverizer 21 and the secondary pulverizer 23 is classified by the liquid cyclone 51. However, the configuration of the grain refiner 20 is not limited to this. For example, the grain refining process may be performed by one grain refining device having the same configuration as that of the secondary grain refining machine 23 and configured so that the processing gap is discontinuous and narrow in the downstream direction. Then, the granules to which the contaminants are attached may be refined while adding water using a general crusher.

[0024]

As described above, according to the first aspect of the present invention, the granular material to which the contaminant is attached is finely divided while adding water, and then stored in the liquid supply tank of the liquid cyclone. The treated water containing the particulate matter sent from the lower part of the liquid supply tank is classified using a liquid cyclone, and the treated water containing the particulate matter having a small particle diameter discharged from the upper part of the liquid cyclone is supplied to the liquid supply tank. By returning to the tank, the large particles having a large particle diameter mixed back into the small particles having the small particle diameter are also sent to the liquid cyclone from the lower part of the liquid supply tank and classified again. Can be reliably classified.

According to the second aspect of the present invention, the treated water obtained by separating the particulate matter having a large particle diameter from the muddy water discharged from the lower part of the hydrocyclone is returned to the liquid supply tank. Can be further improved.

According to the third aspect of the present invention, a liquid supply tank for storing the finely divided particles is provided with a seal tank communicating with upper and lower parts of the liquid supply tank.
Since the treated water discharged from the upper part of the hydrocyclone is sent to the seal tank, the large-particles discharged from the upper part of the liquid cyclone mixed with the small-particles having the above-mentioned particle diameter are also returned. Classification can be performed, and a granular material having a large particle size can be efficiently classified.

According to the fourth aspect of the present invention, a cylindrical rotary drum having a plurality of outer blades on an inner peripheral surface and a plurality of inner blades on an outer peripheral surface are provided inside the rotary drum. On the other hand, the granular material to which the contaminant is adhered is charged into the processing space between the rotary drum and the rotor of the granulating device having the rotor eccentrically mounted thereon, and fine particles are formed while adding water. Because the liquid is supplied to the liquid supply tank, the granular material such as contaminated soil to be charged into the liquid cyclone can be efficiently granulated, and the foreign matter adhering to the individual particles of the granular material can be surely removed. And it can separate efficiently.

[Brief description of the drawings]

FIG. 1 is a diagram showing an outline of a contaminated soil treatment system according to an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of a primary grain refiner according to the present embodiment.

FIG. 3 is a diagram showing a positional relationship between a rotating drum and a rotor of a primary grain refiner and a secondary grain refiner.

FIG. 4 is a diagram showing a configuration of a secondary grain refiner according to the present embodiment.

FIG. 5 is a diagram illustrating a crushing and peptizing process according to the present embodiment.

FIG. 6 is a diagram for explaining a crushing / peptizing action according to the present embodiment.

FIG. 7 is a schematic diagram illustrating a configuration of a hydrocyclone.

FIG. 8 is a diagram showing a configuration of a feed sump according to the present embodiment.

[Explanation of symbols]

11 rotating drum, 11W outer blade, 12 rotor, 1
2W inner blade, 13 ring gear, 14 motor, 15
Rotary axis of rotor, 16 drive mechanism, 17 material input port,
Reference Signs List 18 receiving hopper, 19 belt conveyor, 20 grain refiner, 21 primary grain refiner, 22 vibrating screen, 23 secondary grain refiner, 24 drainer, 30 vibrating screen, 40 feed sump, 50 classifier,
51 hydrocyclone, 52 spigot tank, 53
Dewatering vibration screen, 54 thickener tank, 55
Slurry tank, 56 dehydrator, 60 water supply section, 70 sewage treatment section, 71 treated water tank, 72 liquid filtration device.

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (Reference) B09B 3/00 ZAB B09B 3/00 ZABZ (72) Inventor Takao Sachigo 2-3-13 Shinjuku, Shinjuku-ku, Tokyo The 7th floor of the Ohashi Building Melting Resources Co., Ltd. (72) Inventor Hiroshi Ito 2-1 Tsukudo-cho, Shinjuku-ku, Tokyo Headquarters, Kumagaya Gumi Tokyo headquarters (72) Inventor Yutaka Shinta 265 Sakurazawa, Yorii-cho, Osato-gun, Saitama New R-Seiki Co., Ltd. F-term (reference) 4D004 AA36 AA41 AB02 AB03 AB06 AB07 AC05 BA02 CA01 CA04 CA10 CA13 CA50 CB09 CB11 CB44 CB50 4D063 EE06 EE11 EE21 GA10 GC01 GC07 GC16 GC27 GC36 GD27 4D067 EE01 EE12 A05 GA16 AB13 AB14 AB25 CA01 CA05 DA20

Claims (4)

[Claims] 1. A treated water containing the above-mentioned particulate matter which is stored in a liquid supply tank of a liquid cyclone, and is then sent from a lower part of the above-mentioned liquid supply tank. A liquid contaminant is characterized by using a liquid cyclone and classifying the treated water containing the particulate matter having a small particle diameter discharged from the upper part of the liquid cyclone back to the liquid supply tank. Processing method of granular material. 2. The method according to claim 1, wherein treated water obtained by separating particulate matter having a large particle diameter from muddy water discharged from a lower part of the liquid cyclone is returned to the liquid supply tank. A method for treating adhered particulate matter. 3. A main body of a liquid supply tank for storing the finely divided granules, a seal tank communicating with upper and lower portions of the main body, and a small particle having a small particle diameter discharged from an upper part of the liquid cyclone. 2. The processing water containing the body is sent to the seal tank.
A method for treating particulate matter to which the contaminant described above has adhered. 4. A cylindrical rotary drum having a plurality of outer blades on an inner peripheral surface, and a rotor having a plurality of inner blades on an outer peripheral surface and mounted eccentrically to the rotary drum inside the rotary drum. 2. A granular material to which a contaminant is adhered is introduced into a processing space between the rotary drum and the rotor of a grain refiner provided, and is granulated while adding water.
A method for treating particulate matter to which the contaminant described above has adhered.