JP4695043B2 - Chemical supply method for fly ash treatment and chemical supply device for fly ash treatment - Google Patents

Description

  The present invention provides a kneader for kneading fly ash and a chemical solution (liquid chemical) for fly ash treatment with a kneader to produce a fly ash treated product in which elution of heavy metals in the fly ash is prevented. The present invention relates to a fly ash treatment chemical supply method and a fly ash treatment chemical supply apparatus for supplying a fly ash treatment chemical.

  Fly ash is contained in the exhaust gas generated by incineration of garbage at the garbage incineration facility. The fly ash separated from the exhaust gas is finally landfilled. However, when fly ash contains heavy metals (lead, cadmium, mercury, hexavalent chromium, arsenic, selenium, etc.), heavy metals may be eluted in rainwater after the fly ash is reclaimed. In order to prevent elution of heavy metals, it is necessary to treat the fly ash in advance with a chemical solution for fly ash treatment to obtain a fly ash treated product in which the elution of heavy metals in the fly ash is prevented. In addition, fly ash was collected by waste heat boilers of garbage incineration facilities, "dust" collected in gas cooling chambers (cooling towers), and dust collection ash (dust collection facilities (back filter etc.)). "Baijin") is a general term.

  Therefore, the waste incineration facility uses a kneader to knead the fly ash and the chemical for fly ash treatment to produce a fly ash treatment product that prevents the elution of heavy metals in the fly ash. Is provided.

  In the fly ash treatment chemical solution supply apparatus in this fly ash treatment facility, in the case of an apparatus that can supply, for example, two kinds of chemical solutions to the kneader, a first chemical solution storage tank that stores the first chemical solution for fly ash treatment; And a second chemical storage tank for storing a second chemical for fly ash treatment. Then, the first chemical liquid is supplied to the kneader by a first pipe line having a first float type flow meter and communicating with the kneader from the first chemical liquid storage tank, and the first float type The supply flow rate of the first chemical solution is measured by a flow meter. In addition, the second chemical liquid is supplied to the kneader by a second pipe line having a second float type flow meter and communicating from the second chemical liquid storage tank to the kneader, and the second chemical liquid tank. The supply flow rate of the second chemical solution is measured by a float type flow meter.

  Thus, in the fly ash treatment chemical supply apparatus, a float type flow meter is used to measure the supply flow rate of the chemical liquid. FIG. 4 is a front view showing the float type flow meter for explanation.

  As shown in FIG. 4, the float type flow meter 50 has a float 52 disposed in a taper tube 51, and a fluid, in this case a chemical solution, flows from below to above, and the rising position of the float 52 varies depending on the flow rate of the chemical solution. By utilizing this, the flow rate of the chemical solution is measured.

  Specifically, the taper tube 51 has an inverted frustoconical cylinder shape that extends vertically and gradually increases in diameter as it goes upward, and is transparent or translucent material such as glass or an appropriate synthetic resin. It is made up of. A guide rod 53 extending in the vertical direction (vertical direction) at the center thereof is disposed in the taper tube 51, and a float 52 is movable up and down in the vertical direction along the guide rod 53. It is installed. The float 52 has an inverted frustoconical shape whose diameter is slightly increased upward. Further, a scale portion 54 indicating a flow rate is attached to the outer peripheral surface of the taper tube 51. And the lower end part side of the taper pipe | tube 51 is made into the upstream connection part 55 with respect to the pipe line connected to a kneading machine from a chemical | medical solution storage tank, and the upper end part side of the taper pipe | tube 51 is made into the downstream connection part 56.

  Since this float type flow meter has the advantage that it is easy to use and does not have a malfunction and is inexpensive, it is widely used in a chemical solution supply apparatus for fly ash treatment.

  However, as a chemical solution for fly ash treatment, the viscosity of a generally widely used chemical solution such as a liquid chelating agent is in the range of about 10 mPa · s or less, but a highly viscous chemical solution having a viscosity of 100 mPa · s or more. When using a float type flow meter, the float sticks to the inner peripheral surface near the bottom of the taper tube due to high viscosity, and the float does not move smoothly. There is a concern that the flow meter cannot be used.

Japanese Patent Laying-Open No. 2005-52776 (FIG. 1)

  Accordingly, an object of the present invention is to knead the fly ash and the chemical solution for fly ash treatment with a kneader to produce a fly ash treated product in which elution of heavy metals in the fly ash is prevented. When supplying the chemical solution for fly ash treatment, even if the chemical solution for fly ash treatment is a highly viscous chemical solution, a float type flow meter can be used to know the flow rate of the highly viscous chemical solution. The object is to provide a fly ash treatment chemical supply method and a fly ash treatment chemical supply apparatus.

  In order to solve the above problems, the present invention takes the following technical means.

  In the invention of claim 1, the fly ash and the chemical solution for fly ash treatment are kneaded by a kneader to produce a fly ash treated product in which elution of heavy metals in the fly ash is prevented. In a fly ash treatment chemical supply method for supplying fly ash treatment chemical, a first chemical storage tank for storing a first fly ash treatment chemical supplied to the kneader, and fly ash supplied to the kneader. A second chemical liquid storage tank for storing a high-viscosity chemical liquid for processing and a dilution water storage tank for storing dilution water to be supplied to the kneader are provided, and the first float flow meter is sent from the first chemical liquid storage tank. The first chemical liquid that has passed through and the high-viscosity chemical liquid delivered from the second chemical liquid storage tank are merged and led to a second float-type flow meter provided in a conduit that communicates with the kneader. This is a method for supplying fly ash treatment chemicals.

  In the invention of claim 2, the fly ash and the chemical solution for fly ash treatment are kneaded by a kneader to produce a fly ash treatment product in which elution of heavy metals in the fly ash is prevented. In a fly ash treatment chemical supply method for supplying fly ash treatment chemical, a first chemical storage tank for storing a first fly ash treatment chemical supplied to the kneader, and fly ash supplied to the kneader. A second chemical storage tank for storing a high-viscosity chemical liquid for processing and a dilution water storage tank for storing dilution water to be supplied to the kneader are provided, and the first liquid flowmeter is fed from the dilution water storage tank and passed through the first float flow meter. The diluted water and the high-viscosity chemical solution delivered from the second chemical solution storage tank are joined together and guided to a second float type flow meter provided in a conduit communicating with the kneader. A feature is a method for supplying fly ash treatment chemicals.

  According to a third aspect of the present invention, there is provided a kneader for kneading fly ash and a chemical solution for fly ash treatment to produce a fly ash treated product in which elution of heavy metals in the fly ash is prevented. In a fly ash treatment chemical supply method for supplying fly ash treatment chemical, a dilution water storage tank for storing dilution water to be supplied to the kneading machine and a high viscosity chemical for fly ash treatment to be supplied to the kneading machine are stored. A chemical storage tank is provided, and the dilution water sent from the dilution water storage tank and passed through the first float type flow meter is combined with the high-viscosity chemical liquid sent from the chemical storage tank and communicated with the kneader. It is a chemical solution supply method for fly ash treatment, characterized in that it is guided to a second float type flow meter provided in a pipeline.

  According to the invention of claim 4, the fly ash and the chemical solution for fly ash treatment are kneaded by a kneader to produce a fly ash treatment product in which elution of heavy metals in the fly ash is prevented. In a fly ash treatment chemical solution supply apparatus for supplying a fly ash treatment chemical solution, a first chemical solution storage tank for storing a first fly ash treatment chemical solution to be supplied to the kneader, and a fly ash to be supplied to the kneader. A second chemical storage tank for storing a high-viscosity chemical liquid for processing, and a dilution water storage tank for storing dilution water to be supplied to the kneader, and is sent out from the first chemical liquid storage tank; The first chemical liquid that has passed through and the high-viscosity chemical liquid delivered from the second chemical liquid storage tank are merged and led to a second float-type flow meter provided in a conduit that communicates with the kneader. The fly ash treatment chemical solution supply apparatus is characterized in that it is configured as follows.

  The invention of claim 5 is a method for kneading fly ash and a chemical solution for fly ash treatment with a kneader to produce a fly ash treated product in which elution of heavy metals in the fly ash is prevented. In a fly ash treatment chemical solution supply apparatus for supplying a fly ash treatment chemical solution, a first chemical solution storage tank for storing a first fly ash treatment chemical solution to be supplied to the kneader, and a fly ash to be supplied to the kneader. A second chemical solution storage tank for storing a high-viscosity chemical solution for processing, and a dilution water storage tank for storing dilution water to be supplied to the kneader, and is sent from the dilution water storage tank and passes through the first float-type flow meter. The diluted water and the high-viscosity chemical solution delivered from the second chemical solution storage tank are merged and guided to a second float type flow meter provided in a conduit communicating with the kneader. It is the chemical | medical solution supply apparatus for fly ash processing characterized by having.

  The invention of claim 6 is a method for kneading fly ash and a chemical solution for fly ash treatment with a kneader to produce a fly ash treated product in which elution of heavy metals in the fly ash is prevented. In the fly ash treatment chemical solution supply apparatus for supplying the fly ash treatment chemical solution, the dilution water storage tank for storing the dilution water to be supplied to the kneader and the high viscosity chemical solution for fly ash treatment to be supplied to the kneader are stored. A diluting water storage tank that is fed from the diluting water storage tank and passed through the first float-type flow meter and a high-viscosity chemical liquid that is fed from the medicinal liquid storage tank, and communicates with the kneader. The fly ash treatment chemical solution supply apparatus is configured to be guided to a second float type flow meter provided in a pipe line.

The chemical solution supply method for fly ash treatment according to claim 1 or the chemical solution supply device for fly ash treatment according to claim 4 is delivered from the first chemical solution storage tank, and passes through the first float flow meter, The high-viscosity chemical solution fed from the second chemical solution storage tank is merged and guided to a second float type flow meter provided in a pipe line communicating with the kneader.

  Therefore, the second float type flow meter has a mixed chemical solution in which the first chemical solution and the high-viscosity chemical solution are merged, and the viscosity is lower than that of the high-viscosity chemical solution by merging with the first chemical solution. Since the chemical solution is introduced, in the second float type flow meter, the float moves smoothly without sticking to the inner peripheral surface near the bottom of the tapered tube. Therefore, by subtracting the flow rate S1 of the first chemical solution measured by the first float flow meter from the measured value (scale value) St of the second float flow meter, the height from the second chemical solution storage tank is reduced. It is possible to know the flow rate S2 of the viscous chemical solution, and even if the chemical solution for fly ash treatment is a highly viscous chemical solution, the flow rate S2 of the highly viscous chemical solution is easy to use and has the advantage of being inexpensive and inexpensive. A float flow meter can be used.

  The fly ash treatment chemical solution supply method according to claim 2 or the fly ash treatment chemical solution supply device according to claim 5 is sent from the dilution water storage tank and passes through the first float-type flow meter and the second chemical solution. The high-viscosity chemical solution delivered from the storage tank is merged and guided to a second float type flow meter provided in a pipe line connected to the kneader.

  Therefore, the second float type flow meter is a mixed chemical solution in which the dilution water and the high-viscosity chemical solution are merged, and the chemical solution having a lower viscosity than the high-viscosity chemical solution is introduced by the merge with the dilution water. In the second float type flow meter, the float moves smoothly without sticking to the inner peripheral surface near the bottom of the tapered tube. Therefore, by subtracting the value of the flow rate S1 ′ of the dilution water measured by the first float type flow meter from the measured value (scale value) St ′ of the second float type flow meter, the second chemical solution storage tank The flow rate S2 'of high-viscosity chemical liquid can be known, and even if the chemical liquid for fly ash treatment is a high-viscosity chemical liquid, it is easy to use and inexpensive without knowing the flow rate S2' of the high-viscosity chemical liquid A float type flow meter having the following advantages can be used.

  The fly ash treatment chemical solution supply method according to claim 3 or the fly ash treatment chemical solution supply device according to claim 6 is sent out from the dilution water storage tank and sent from the dilution water passing through the first float type flow meter and the chemical solution storage tank. The high-viscosity chemical solution to be combined is led to a second float type flow meter provided in a pipe line communicating with the kneader.

  Therefore, the second float type flow meter is a mixed chemical solution in which the dilution water and the high-viscosity chemical solution are merged, and the chemical solution having a lower viscosity than the high-viscosity chemical solution is introduced by the merge with the dilution water. In the second float type flow meter, the float moves smoothly without sticking to the inner peripheral surface near the bottom of the tapered tube. Therefore, by subtracting the value of the flow rate S1 ″ of the dilution water measured by the first float type flow meter from the measured value (scale value) St ″ of the second float type flow meter, the high viscosity from the chemical solution storage tank is obtained. Even if the flow rate S2 ″ of the chemical solution can be known, and the chemical solution for fly ash treatment is a highly viscous chemical solution, the advantage is that it is easy to use and has no trouble to know the flow rate S2 ″ of the highly viscous chemical solution. A float type flow meter can be used.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram showing a fly ash treatment chemical supply apparatus according to an embodiment of the present invention.

  The waste incineration facility is equipped with a fly ash treatment facility that produces fly ash treatment products that prevent elution of heavy metals in the fly ash by kneading the fly ash and the chemical solution for fly ash treatment using a kneader. The fly ash treatment chemical supply device is one of the devices constituting this fly ash treatment facility.

  In FIG. 1, 1 is a fly ash storage tank, 2 is a fly ash conveyance conveyor, and fly ash collected by a waste heat boiler, a gas cooling chamber (temperature reduction tower), a back filter, etc. in a garbage incineration facility. Is transported to the fly ash storage tank 1. Reference numeral 3 is a table feeder as a fly ash quantitative supply device that performs quantitative cutout and supply of fly ash from the fly ash storage tank 1, and 4 is a fly ash quantity supplied by the table feeder 3, and fly ash and fly ash treatment. It is a kneader that kneads the chemical solution for use together with dilution water. 5 is a carry-out conveyor, and 6 is a fly ash processed product pit in this example. The fly ash processed product after kneading is stored in the fly ash processed product pit 6 after being naturally cured on the carry-out conveyor 5 in order to prevent sticking in the fly ash processed product pit 6.

  Next, the fly ash treatment chemical supply apparatus 100 will be described.

  In FIG. 1, 101 is a first chemical storage tank for storing a first chemical for fly ash treatment supplied to the kneading machine 4, and 102 is a first chemical storage tank for storing high-viscosity chemical for fly ash treatment supplied to the kneading machine 4. The chemical solution storage tank 2, 103 is a dilution water storage tank for storing dilution water supplied to the kneader 4. The first chemical solution storage tank 101 stores a liquid chelating agent (viscosity: 10 mPa · sat 25 ° C.), which is a typical fly ash treatment chemical solution, and the second chemical solution storage tank 102 has a viscosity of, for example, a slurry chemical solution. Is stored at a high viscosity of 100 to 1000 mPa · s (at 25 ° C.).

  In this embodiment, a pipe (supply line) L101 communicates from the first chemical solution storage tank 101 to the kneading machine 4, and the pump 104, the on-off valve 105, the first line L101 are connected to the pipe L101 in this order from the upstream side. A float type flow meter 106, a check valve 107, a second float type flow meter 108 and a check valve 109 are provided. Further, a pipe line L102 communicates from the second chemical solution storage tank 102 between the check valve 107 and the second float type flow meter 108 in the pipe line L101, and this pipe line L102 is pumped in order from the upstream side. 110 and an on-off valve 111 are provided.

  A pipe L103 communicates from the diluting water storage tank 103 to the kneading machine 4, and a pump 112, an on-off valve 113, a float type flow meter 114, and a check valve 115 are provided in this pipe L101 in order from the upstream side. ing.

  As described above, the fly ash treatment chemical supply apparatus 100 according to this embodiment is supplied from the first chemical storage tank 101 and passes through the first float flow meter 106 and the second chemical storage tank. The high-viscosity chemical solution delivered from 102 is joined and guided to the second float type flow meter 108 provided in the pipe line L101 communicating with the kneader 4.

  Accordingly, the second float type flow meter 108 is a mixed chemical liquid in which the first chemical liquid and the high-viscosity chemical liquid from the second chemical liquid storage tank 102 are merged, and the high-viscosity is obtained by merging with the first chemical liquid. Since the mixed chemical liquid whose viscosity is lower than that of the chemical liquid is introduced, in the second float type flow meter 108, the float moves smoothly without sticking to the inner peripheral surface near the bottom of the tapered tube. Therefore, the second chemical liquid storage tank 102 is obtained by subtracting the flow rate S1 of the first chemical liquid measured by the first float type flow meter 106 from the measured value (scale value) St of the second float type flow meter 108. The flow rate S2 of the high-viscosity chemical solution can be known, and even if the chemical solution for fly ash treatment is a high-viscosity chemical solution, the flow rate S2 of the high-viscosity chemical solution is easy to use and has no trouble, and is inexpensive. An advantageous float flow meter 108, 106 can be used.

  FIG. 2 is a schematic configuration diagram showing a chemical solution supply apparatus for fly ash treatment according to another embodiment of the present invention.

  As shown in FIG. 2, in this embodiment, a pipe L201 communicates from the dilution water storage tank 203 to the kneading machine 4, and this pipe L201 is connected to the pump 204, the on-off valve 205, the first float in this order from the upstream side. A flow meter 206, a check valve 207, a second float flow meter 208, and a check valve 209 are provided. Further, a pipe line L202 communicates from the second chemical solution storage tank 202 between the check valve 207 and the second float type flow meter 208 in the pipe line L201. 210 and an on-off valve 211 are provided.

  Further, a pipe line L203 communicates from the first chemical solution storage tank 201 to the kneading machine 4, and a pump 212, an on-off valve 213, a float type flow meter 214, and a check valve 215 are connected to the pipe line L203 in this order from the upstream side. Is provided.

  As described above, the fly ash treatment chemical supply apparatus 200 according to this embodiment is sent from the dilution water storage tank 203, and is sent from the dilution water that has passed through the first float type flow meter 206 and the second chemical liquid storage tank 202. The high-viscosity chemical liquid is combined and guided to the second float type flow meter 208 provided in the pipe line L201 communicating with the kneader 4.

  Accordingly, the second float type flow meter 208 is a mixed chemical liquid in which the diluted water and the high-viscosity chemical liquid from the second chemical liquid storage tank 202 are merged, and is more viscous than the high-viscosity chemical liquid by the merge with the diluted water. In the second float type flow meter 208, the float moves smoothly without sticking to the inner peripheral surface near the bottom of the tapered tube. Therefore, the second chemical solution is obtained by subtracting the value of the flow rate S1 ′ of the dilution water measured by the first float type flow meter 206 from the measured value (scale value) St ′ of the second float type flow meter 208. The flow rate S2 ′ of the high-viscosity chemical solution from the storage tank 202 can be known, and even if the fly ash treatment chemical solution is a high-viscosity chemical solution, it is easy to use to know the flow rate S2 ′ of the high-viscosity chemical solution. Float type flow meters 208 and 206 having the advantage of being inexpensive and inexpensive can be used.

  FIG. 3 is a schematic configuration diagram showing a chemical solution supply apparatus for fly ash treatment according to another embodiment of the present invention.

  As shown in FIG. 3, in this embodiment, a pipe line L301 communicates from the dilution water storage tank 302 to the kneading machine 4, and this pipe line L301 is connected to the pump 303, the on-off valve 304, the first float in this order from the upstream side. A flow meter 305, a check valve 306, a second float flow meter 307, and a check valve 308 are provided. Further, a pipe line L302 communicates from the chemical solution storage tank 301 between the check valve 306 and the second float type flow meter 307 in the pipe line L301, and this pipe line L302 is opened and closed with the pump 309 in order from the upstream side. A valve 310 is provided.

  As described above, the fly ash treatment chemical supply apparatus 300 according to this embodiment is sent from the dilution water storage tank 302 or the dilution water passing through the first float type flow meter 305 and the height supplied from the chemical liquid storage tank 301. The viscous chemical solution is merged and guided to the second float type flow meter 307 provided in the pipe line L301 communicating with the kneader 4.

  Therefore, the second float type flow meter 307 is a mixed chemical liquid in which the diluted water and the high-viscosity chemical liquid from the chemical liquid storage tank 301 merge, and the viscosity is lower than that of the high-viscosity chemical liquid due to the merge with the diluted water. Since the chemical solution is introduced, in the second float type flow meter 307, the float moves smoothly without sticking to the inner peripheral surface near the bottom of the tapered tube. Accordingly, by subtracting the value of the flow rate S1 ″ of the dilution water measured by the first float type flow meter 305 from the measurement value (scale value) St ″ of the second float type flow meter 307, the chemical solution storage tank 301 Can know the flow rate S2 ″ of the high-viscosity chemical solution, and even if the chemical solution for fly ash treatment is a high-viscosity chemical solution, it is easy to use and inexpensive without knowing the flow rate S2 ″ of the high-viscosity chemical solution Float type flow meters 307 and 305 having the following advantages can be used.

It is a schematic block diagram which shows the chemical | medical solution supply apparatus for fly ash processing by one Embodiment of this invention. It is a schematic block diagram which shows the chemical solution supply apparatus for fly ash processing by other embodiment of this invention. It is a schematic block diagram which shows the chemical solution supply apparatus for fly ash processing by other embodiment of this invention. It is the front view which shows a float type flowmeter for description.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Fly ash storage tank 4 ... Kneading machine 101 ... 1st chemical | medical solution storage tank 102 ... 2nd chemical | medical solution storage tank 103 ... Dilution water storage tank 104,110,112 ... Pump 106 ... 1st float type flow meter 108 ... 2nd Float type flow meter 114 ... Float type flow meter L101, L102, L103 ... Pipe line 201 ... First chemical liquid storage tank 202 ... Second chemical liquid storage tank 203 ... Dilution water storage tank 204, 210, 212 ... Pump 206 ... First float Type flow meter 208 ... Second float type flow meter 214 ... Float type flow meter L201, L202, L203 ... Pipe 301 ... Chemical solution storage tank 302 ... Dilution water storage tank 303,309 ... Pump 305 ... First float type flow meter 307 ... 2nd float type flow meter L301, L302 ... Pipe line

Claims (6)

In order to produce fly ash treated products in which elution of heavy metals in the fly ash is prevented by kneading fly ash and fly ash treatment chemicals with a kneader, the fly ash treatment chemical is added to the kneader. In the method for supplying fly ash treatment chemicals to be supplied,
A first chemical storage tank for storing a first chemical liquid for fly ash treatment supplied to the kneader, a second chemical storage tank for storing a high-viscosity chemical liquid for fly ash treatment supplied to the kneader, and the kneading A dilution water storage tank for storing dilution water to be supplied to the machine is provided, sent from the first chemical liquid storage tank, and sent from the first chemical liquid storage tank through the first float type flow meter and the second chemical liquid storage tank. A high-viscosity chemical solution is fed to a second float-type flow meter provided in a pipe line connected to the kneading machine. In order to produce fly ash treated products in which elution of heavy metals in the fly ash is prevented by kneading fly ash and fly ash treatment chemicals with a kneader, the fly ash treatment chemical is added to the kneader. In the method for supplying fly ash treatment chemicals to be supplied,
A first chemical storage tank for storing a first chemical liquid for fly ash treatment supplied to the kneader, a second chemical storage tank for storing a high-viscosity chemical liquid for fly ash treatment supplied to the kneader, and the kneading A dilution water storage tank for storing dilution water to be supplied to the machine is provided, the dilution water sent from the dilution water storage tank and passed through the first float type flow meter, and the highly viscous chemical liquid sent from the second chemical liquid storage tank Is fed to a second float type flow meter provided in a pipe line connected to the kneading machine. In order to produce fly ash treated products in which elution of heavy metals in the fly ash is prevented by kneading fly ash and fly ash treatment chemicals with a kneader, the fly ash treatment chemical is added to the kneader. In the method for supplying fly ash treatment chemicals to be supplied,
A dilution water storage tank for storing dilution water to be supplied to the kneading machine, and a chemical liquid storage tank for storing high-viscosity chemical liquid for fly ash treatment to be supplied to the kneading machine, are provided from the dilution water storage tank, and are supplied to the first float. The diluting water that has passed through the flow meter and the high-viscosity chemical solution fed from the chemical solution storage tank are joined together and led to a second float flow meter provided in a pipe line that communicates with the kneader. A chemical solution supply method for fly ash treatment characterized by the above. In order to produce fly ash treated products in which elution of heavy metals in the fly ash is prevented by kneading fly ash and fly ash treatment chemicals with a kneader, the fly ash treatment chemical is added to the kneader. In the chemical supply device for fly ash treatment
A first chemical storage tank for storing a first chemical liquid for fly ash treatment supplied to the kneader, a second chemical storage tank for storing a high-viscosity chemical liquid for fly ash treatment supplied to the kneader, and the kneading A dilution water storage tank for storing dilution water to be supplied to the machine, sent from the first chemical liquid storage tank, and sent from the first chemical liquid storage tank through the first float-type flow meter and the second chemical liquid storage tank The high-viscosity chemical solution is combined and led to a second float type flow meter provided in a pipe line connected to the kneading machine. In order to produce fly ash treated products in which elution of heavy metals in the fly ash is prevented by kneading fly ash and fly ash treatment chemicals with a kneader, the fly ash treatment chemical is added to the kneader. In the chemical supply device for fly ash treatment
A first chemical storage tank for storing a first chemical liquid for fly ash treatment supplied to the kneader, a second chemical storage tank for storing a high-viscosity chemical liquid for fly ash treatment supplied to the kneader, and the kneading A dilution water storage tank for storing dilution water to be supplied to the machine is provided, the dilution water is sent out from the dilution water storage tank and passed through the first float type flow meter, and the high-viscosity chemical liquid is sent out from the second chemical liquid storage tank The chemical solution supply device for fly ash treatment is characterized in that it is guided to a second float type flow meter provided in a conduit communicating with the kneader. In order to produce fly ash treated products in which elution of heavy metals in the fly ash is prevented by kneading fly ash and fly ash treatment chemicals with a kneader, the fly ash treatment chemical is added to the kneader. In the chemical supply device for fly ash treatment
A dilution water storage tank for storing dilution water to be supplied to the kneading machine; and a chemical liquid storage tank for storing high-viscosity chemical liquid for fly ash treatment to be supplied to the kneading machine. The diluting water that has passed through the flow meter and the high-viscosity chemical solution that is delivered from the chemical solution storage tank are joined together and guided to a second float flow meter that is provided in a conduit that communicates with the kneader. A chemical supply device for fly ash treatment, characterized in that:

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