CN219112479U - Modular cleaning device for incinerating ash harmlessly - Google Patents

Abstract

The utility model provides a modular cleaning device for incinerating ash harmlessly, which comprises: an input unit for inputting the incineration ash and distributing the incineration ash in a constant amount to be discharged; a nanobubble generation unit; which generates nanobubbles in water to generate washing water; a mixing section; which allows the washing water and the incineration ash to flow in; a cleaning unit for injecting the incineration ash discharged from the mixing unit and injecting high-pressure water into the incineration ash; and a sedimentation part and a water treatment part, which sediments the incineration ash on the wastewater and discharges the incineration ash to a concentration tank for concentration, wherein the cleaning part comprises: a surface peeling section formed by rapidly reducing the diameter from one side; a primary collision section formed by expanding the inner diameter of the end of the surface peeling section; a secondary collision section for causing the fluid passing through the primary collision section to collide with the collision member, thereby further removing the contaminants; and an ultrasonic vibrator provided in the primary collision section.

Description

Modular cleaning device for incinerating ash harmlessly

Technical Field

The present utility model relates to a modularized cleaning device for incinerating ash, and more particularly, to a modularized cleaning device for incinerating ash, which is capable of effectively removing foreign matters or pollutants of fine particles contained in incinerating ash by continuously sorting, transferring, cleaning, classifying, drying, dehydrating, etc. the bottom ash (bottom ash) and fly ash (fly ash) generated in an incineration site, and continuously performing the processes of sorting, transferring, cleaning, classifying, drying, dehydrating, etc. by using a plurality of modularized structures.

Background

In general, bottom ash generated in an incineration site mainly consists of ash, and the amount of heavy metals eluted does not exceed a predetermined value, but contains a large amount of water-soluble salts. Therefore, although it can be treated with ordinary waste, reuse is limited. Fly ash contains a large amount of heavy metals and water-soluble salts, and is disposed of as a designated waste and is limited in reuse.

The waste containing heavy metals is treated with high-priced specified waste or relatively low-priced ordinary waste according to the regulations for the implementation of waste management in table 1, and the water-soluble salt is regulated by a separate chloride ion limitation value according to the purpose of reuse at the time of reuse.

In the prior art, the main application is that the bottom ash in the incineration ash is not treated alone, but is treated as a common waste, and the non-scattered ash is put into a stabilizer or the like to inhibit the dissolution of heavy metals and then is treated as a common waste.

However, if an expensive stabilizer is mixed, the amount of the entire waste increases with the addition of the stabilizer, and the transportation cost and the disposal cost increase, and the water-soluble salt cannot be removed, so that the stabilizer cannot be reused, and improvement is required from the viewpoints of cost saving and effective recycling of waste resources.

The present utility model relates to a cleaning technique for incineration ash treatment, particularly non-scattered ash treatment, and relates to a technique for removing harmful substances as general waste treatment or reuse without increasing the volume and weight due to mixing of a stabilizer or the like.

Generally, the cleaning technique refers to a method of removing contaminants adsorbed on the surface of the contaminants by dissolving them out with water or a chemical solvent, or a method of separating and cleaning fine particles and coarse particles which are contaminated and aggregated.

However, since the particle size is in a uniform range for, for example, bottom ash, fly ash, and the like, and substances contaminated with water-soluble salts and heavy metals, heavy metal contamination of large particulate matters, and the like are poor in applicability and limited in use.

Disclosure of Invention

The utility model aims to continuously perform quantitative supply, transfer, cleaning, classification, water treatment, process water reutilization, dehydration, drying and other processes on incineration ash input through a hopper by using a plurality of modularized components, thereby improving the cleaning efficiency caused by pollutant removal.

Further, a modular cleaning apparatus for incinerating ash is provided, in which a ratio of fly ash to water is 1:1 to 1:4, and only a cleaning solvent or water at a level not requiring neutralization is used as a cleaning liquid, thereby providing a physical treatment technique for reducing the amount of chemicals, waste liquid treatment and water treatment capacity.

The utility model realizes the aim through the following technical scheme.

The utility model relates to a modular cleaning device for incinerating ash harmlessly, which comprises: an input unit for inputting the incineration ash and distributing the incineration ash in a constant amount to be discharged; a nanobubble generation unit; which generates nanobubbles in water to generate washing water; a mixing section; a mixing screw portion for extending the mixing time of the incineration ash and the cleaning water while moving the incineration ash and the cleaning water in a predetermined direction is provided inside the mixing screw portion; a cleaning unit for injecting the incineration ash discharged from the mixing unit and spraying high-pressure water to the incineration ash to peel off the pollutants from the incineration ash; and a settling section and a water treatment section for settling the incineration ash from the wastewater containing the incineration ash and the pollutants after the cleaning discharged from the cleaning section by a coagulant and discharging the wastewater to a concentration tank for concentration, wherein the cleaning section comprises: a surface peeling section formed by sharply reducing the diameter of one side of the incineration ash discharged from the mixing section so as to form cavitation bubbles, wherein the pollutant of the incineration ash is peeled off by utilizing impact energy generated during the generation and collapse of the cavitation bubbles, and the pollutant peeling is performed by generating shear stress and vertical stress by high-speed high-pressure water flow; a primary collision section formed by expanding the inner diameter of the end of the surface separation section so that fluid passing through the surface separation section is caused to flow in a turbulent manner by a pressure change to generate inter-particle collision; a secondary collision section for causing the fluid passing through the primary collision section to collide with the collision member, thereby further removing the contaminants; and an ultrasonic vibrator provided in the primary collision zone for generating acoustic cavitation to further separate contaminants by using impact energy generated when bubbles collapse.

In the modular cleaning apparatus for incinerating ash according to the present utility model, the mixing section is configured to perform transfer while separating in advance the contaminants of the incinerating ash moving toward the cleaning section by the operation of the nanobubble generating section and the spiral section.

In the modular cleaning device for incinerating ash in accordance with the present utility model, the surface separation section may be formed by reducing the diameter of the surface separation section relative to the inlet side of the cleaning section and extending a predetermined length, and the primary collision section may be formed by rapidly expanding or gradually expanding the diameter.

In the modular cleaning device for incinerating ash according to the present utility model, the nano bubble generating portion may supply the cleaning water containing nano bubbles to the cleaning portion.

In the modular cleaning apparatus for incinerating ash according to the present utility model, cavitation bubbles generated in the surface stripping section and cleaning water containing nanobubbles are mixed in the cleaning section to perform stripping and dissolution of inorganic salts and heavy metals.

In addition, in the modular cleaning apparatus for incinerating ash according to the present utility model, the settling section includes: a flow rate adjusting tank into which the incineration ash and wastewater to be cleaned flow; a coagulating sedimentation tank connected to the flow rate adjustment tank, and mixing the incineration ash discharged from the flow rate adjustment tank with a coagulant by flowing the incineration ash into the wastewater; a process water tank provided with a ceramic filter at the upper part thereof, wherein the purified water at the upper part of the coagulating sedimentation tank after the incineration ash is precipitated flows in and removes the particulate heavy metals in the wastewater; and a concentrating tank for flowing the incineration ash discharged from the process water tank into the concentrating tank and concentrating the incineration ash.

The modular cleaning apparatus for the harmless treatment of incineration ash according to the present utility model further includes a dewatering dryer for removing moisture contained in the incineration ash and the wastewater discharged from the concentration tank.

In addition, in the modular cleaning device for incinerating ash of the present utility model, the process water tank is externally provided with an ion exchange device and activated carbon for further removing soluble heavy metals and water-soluble salts contained in the process water.

In the modular cleaning apparatus for incinerating ash according to the present utility model, the settling section may further include a stirring tank for adding a stabilizer to the incinerating ash discharged from the dehydrator and stirring the same.

The effects of the present utility model are as follows.

The utility model uses a plurality of components to continuously perform the processes of feeding, transferring, washing, depositing, dewatering, drying, stabilizer mixing and the like on the incineration ash fed through the hopper, thereby improving the cleaning efficiency for removing foreign matters or pollutants.

In addition, the ratio of incineration ash to water can be minimized, thereby having the effect of providing a physical treatment technique that uses only a washing solvent or water at a level that does not require neutralization as a washing liquid, reducing the amount of chemicals, waste liquid treatment, and water treatment capacity.

Furthermore, the present utility model is to modularize a plurality of components into one device, so that the apparatus can be simplified, and accordingly, the apparatus can be conveniently moved and used, and if necessary, additional apparatuses such as a stabilizer mixing device can be selectively and simply applied to the modularized device.

In addition, in the process of passing through a sharp diameter change zone by utilizing high-speed high-pressure water flow, cavitation bubbles are generated due to reduction of hydraulic pressure, and impact energy generated in the collapse process of the cavitation bubbles is utilized, so that the pollutant on the surface of the incineration ash is stripped. Then, turbulence generated by releasing pressure according to diameter change induces collision among incineration ash particles, secondary stripping is performed by collision force among the particles, and tertiary stripping is performed by collision force generated when the incineration ash particles collide with a final end collision member, so that the effective stripping effect can be achieved only by a simple physical treatment process.

In addition, in order to remove the pollutants existing on the surface of the incineration ash, even the pollutants trapped in the micro-gaps of the incineration ash, permeable nano bubbles can be used in the micro-gaps, and the water of the high-pressure water and the process water is injected after the nano bubbles are formed by the nano bubble device.

Therefore, the utility model does not limit the types and characteristics of pollutants, can perform wide treatment, expands the application range of the device, can remove pollutants only by pure water without using other chemicals, can easily recycle washing water, and has the effect of economic treatment.

Drawings

Fig. 1 is a view showing the overall structure of a modular cleaning apparatus for incinerating ash for the purpose of making it harmless according to an embodiment of the present utility model.

Fig. 2 is a view showing an input portion of a modular cleaning apparatus for incinerating ash for the purpose of making the same harmless according to an embodiment of the present utility model.

Fig. 3 is a view showing a mixing section of a modular cleaning apparatus for incinerating ash for harmlessness according to an embodiment of the present utility model.

Fig. 4 is a view showing a cleaning section of a modular cleaning apparatus for incinerating ash for the purpose of making it harmless according to an embodiment of the present utility model.

Fig. 5 is a diagram showing a principle of contaminant separation in a cleaning section of a modular cleaning apparatus for incinerating ash, according to an embodiment of the present utility model.

Fig. 6 is a view showing an incineration ash settling section of a modular cleaning apparatus for the innocent incineration ash and a water treatment section for reuse of process water according to an embodiment of the present utility model.

Fig. 7 is a view showing a nanobubble generating part of a modular cleaning apparatus for incinerating ash for the purpose of making it harmless according to an embodiment of the present utility model.

Fig. 8 is a graph showing the results of analysis of crystal morphology change by XRD analysis before and after washing in order to confirm the principle of innocuous incineration ash in the example of the present utility model.

FIG. 9 is a graph showing the results of analysis of amorphous morphology change by FTIR analysis before and after washing in order to confirm the principle of innocuous incineration ash according to the example of the present utility model

Fig. 10 is a diagram showing the principle of the harmless treatment of the incineration ash according to the embodiment of the present utility model.

Symbol description

100: input unit, 110: feeding hopper, 120: vibration motor, 130: quantitative conveyor belt, 140: magnetic force component, 300: mixing section, 310: mixing inflow portion, 311: nanobubble water jet member, 330: mixing body, 350: mixing screw, 370: mix discharge portion, 400: nanobubble generation unit, 410: pressure pump, 420: generator, 500: cleaning unit, 510: cleaning the hopper, 520: cleaning the body, 530: high-pressure water jet part, 540: stripping section, 550: ultrasonic vibrator, 560: collision member, 570: trap port, 580: cleaning the discharge port, 700: water treatment unit, 710: flow regulating tank, 720: coagulation sedimentation tank, 730: process water tank, 740: concentration tank, 750: dehydrator, 760: mixing tank, 770: ceramic filter, 780: ion exchange and activated carbon, a: surface peeling interval, B: primary collision interval, C: and a secondary collision zone.

Detailed Description

Hereinafter, preferred embodiments of the present utility model will be described in detail with reference to the accompanying drawings.

The advantages and features of the present utility model, as well as the method of attaining them, will become apparent with reference to the following detailed description of embodiments taken in conjunction with the accompanying drawings.

However, the present utility model is not limited to the following examples, which are to be construed as being merely illustrative of the present utility model and the scope of the present utility model is defined by the scope of the appended claims.

In the description of the present utility model, if it is determined that the conventional techniques and the like are relevant, the gist of the present utility model is not clear, and detailed description thereof will be omitted.

Fig. 1 is a view showing the overall structure of a modular cleaning apparatus for incinerating ash for the purpose of making it harmless according to an embodiment of the present utility model. Fig. 2 is a view showing an input portion of a modular cleaning apparatus for incinerating ash for the purpose of making the same harmless according to an embodiment of the present utility model. Fig. 3 is a view showing a mixing section of a modular cleaning apparatus for incinerating ash for harmlessness according to an embodiment of the present utility model.

Fig. 4 is a view showing a cleaning section of a modular cleaning apparatus for incinerating ash in accordance with an embodiment of the present utility model. Fig. 5 is a diagram showing a principle of contaminant separation in a cleaning section of a modular cleaning apparatus for incinerating ash, according to an embodiment of the present utility model.

Fig. 6 is a view showing an incineration ash settling section and a water treatment section for reuse of process water of the modular cleaning apparatus for the harmless treatment of incineration ash according to the embodiment of the present utility model.

Referring to fig. 1, the modular cleaning apparatus for soil purification of the present embodiment includes: an input unit 100, a mixing unit 300, a nanobubble generating unit 400, a cleaning unit 500, a settling unit, a water treatment unit 700 for recycling process water, a dehydrator 750, and a mixing tank 760.

The modular cleaning apparatus for ash incineration in the present embodiment is configured by modularizing the plurality of members into one apparatus, and thus can simplify the equipment, facilitate the use as a mobile apparatus, and optionally apply additional equipment such as a stabilizer stirring tank to the modular apparatus when necessary.

The input unit 100 can input fine pollutants such as foreign matters adhering to contaminated soil and scattered ash generated by incineration ash. That is, only the incineration ash can be put in.

Further, the input part 100 may include an input hopper 110, a vibration motor 120, a body, and a quantitative conveyor 130 to sequentially separate pollutants by constantly discharging minute pollutants of incineration ash, etc.

The charging hopper 110 is formed to have a shape that narrows from the upper portion toward the lower portion, and thus, can charge the incineration ash mixed with the pollutants by various equipment such as an excavator and move the incineration ash downward. Further, a vibration motor 120 may be provided at a lower end portion of the input hopper 110.

A plurality of vibration motors 120 may be provided on the outer side surface of the input hopper 110. This causes vibration, and the incineration ash is easily discharged downward from the charging hopper 110. At this time, the incineration ash discharged downward may flow into the quantitative conveyor 130.

The quantitative conveyor 130 transfers the incineration ash in a predetermined amount. Further, the quantitative conveyor 130 may be formed to extend rightward. The input hopper 110 is provided at the upper left side of the main body, and the mixing section 300 is provided at the lower right side.

The incineration ash flowing into the input hopper 110 and the quantitative conveyor 130 may move to the mixing part 300 located at the right side. In addition, the quantitative conveyor 130 may be driven at a constant speed so that the moving amount of incineration ash is discharged identically. At this time, a magnetic member 140 for removing foreign substances such as bolts and nuts may be provided at the outlet side of the quantitative conveyor 130.

The mixing part 300 may include a mixing inflow part 310, a mixing body 330, a mixing spiral part 350, and a mixing discharge part 370, so that the incineration ash flowing in from the quantitative conveyor 130 may be moved while the washing water generated in the nanobubble generating part 400 may be flowed into the inside, and the washing water and the incineration ash may be simultaneously mixed, thereby enabling a mixing time of the washing water and the incineration ash to be prolonged to peel off the mixture or the adhesion of the incineration ash contaminants. In this case, the mixing inflow portion 310 may be provided with an injection member 311 for injecting nano bubble water.

The mixing inflow part 310 may be provided at the right end of the quantitative conveyor 130 of the input part 100. Also, the mixing inflow part 310 may be disposed under the quantitative conveyor 130. Thereby, the incineration ash discharged from the quantitative conveyor 130 in a constant amount can flow into the inside of the mixing body 330.

The mixing body 330 may be formed in a circular cross section. Also, the mixing body 330 may extend to the right side. The mixing inflow portion 310 is provided on the left side of the mixing body 330, so that the incineration ash discharged from the quantitative conveyor 130 can flow in.

The injection member 311 that can allow the cleaning water containing nanobubbles to flow in may be connected to the mixing inflow portion 310. This allows the washing water to flow into the mixing body 330. At this time, when the incineration ash flowing into the mixing body 330 and the washing water flow into and move to the right at the same time on the left side of the mixing body 330, mixing and movement can be achieved.

Further, the ratio of the incineration ash to the washing water flowing in may be 1:1 at a minimum and 1:4 at a maximum, so that the amount of the washing water for washing the incineration ash can be minimized, and at the same time, since the washing water can contain nano bubbles, the use of chemicals which may cause environmental pollution can be minimized. At this time, a mixing screw 350 may be provided at the inner side of the mixing body 330.

The water having the nanobubbles formed therein can clean contaminants contained in pores (pore) such as gaps or voids formed in the incineration ash having a small particle size. For example, the nanobubbles may clean pore (pore) foreign matter contained in gaps or voids formed in the minute incineration ash.

For example, the nanobubbles are inserted into pores (pore) such as gaps or voids of the incineration ash to displace or scrape out foreign substances such as heavy metals contained in the incineration ash, thereby effectively cleaning the foreign substances contained in the incineration ash.

That is, in the mixing process by the mixing screw 350, the foreign matter contained in the incineration ash can be effectively cleaned.

When the mixing screw 350 can move the inflow incineration ash and the washing water to the right while mixing them from the left, the mixing time of the incineration ash and the washing water can be prolonged, and the mixing screw is formed in a spiral shape to continuously mix the incineration ash and the washing water, so that the effect of the washing water having the nano bubbles formed to peel off the pollutants of the incineration ash can be maximized. At this time, a mixing drain 370 may be provided at the right end of the mixing body 330.

The mixing drain 370 may be provided at the right end of the mixing body 330. Further, the mixing drain 370 may be provided below the mixing body 330, so that the incineration ash and the washing water moving through the mixing body 330 may flow into the washing part 500 located below the mixing drain 370.

Referring to fig. 4 and 5, the nanobubble generating part 400 includes a pressure pump 410 and a generator 420 to generate nanobubbles in water to produce and supply washing water flowing into the mixing part 300 and the washing part 500.

As a result, the general water flows into the nanobubble generating unit 400, and the cleaning water used for the entire cleaning apparatus for incinerating ash is generated.

The nanobubble generating unit 400 may include nanobubbles in water. At this time, the water in which the nanobubbles occur may be used as the washing water. The water containing the nanobubbles generated in the nanobubble generating unit 400 can be used as water for use in an ash incineration harmless device.

The water having the nanobubbles formed therein can clean contaminants contained in pores (pore) such as gaps or voids formed in the incineration ash having a small particle size. For example, the nanobubbles may clean pore (pore) foreign matter contained in gaps or voids formed in the minute incineration ash.

For example, the nanobubbles are inserted into pores (pore) such as gaps or voids of the incineration ash to displace or scrape out foreign substances such as heavy metals contained in the incineration ash, thereby effectively cleaning the foreign substances contained in the incineration ash.

That is, by forming nanobubbles in water used as high-pressure water and cleaning water, there is an effect that water-soluble salts, which are foreign matters that can be effectively cleaned by the cleaning part 500, and heavy metals that can be effectively cleaned by the nanobubbles can be simultaneously cleaned, and the cleaning effect of incineration ash can be maximized.

The cleaning part 500 may include a cleaning hopper 510, a cleaning body 520, a high-pressure spraying member 530, a stripping part 540, an ultrasonic vibrator 550, a collision member 560, a collection port 570, and a cleaning discharge port 580 so that incineration ash flowing into the inside is mixed with cleaning water containing nanobubbles to easily strip contaminants.

The cleaning unit 500 sprays high-pressure water to the incineration ash and the nano bubble water fed from the cleaning hopper 510 while being transferred along the transfer path, thereby removing contaminants from the incineration ash.

The cleaning section 500 has a surface peeling section a, a primary collision section B, and a secondary collision section C along the longitudinal direction.

After the incineration ash flows into the mixing part 300 through the charging part 100, the incineration ash, which has been peeled off and transferred in advance by the mixing part 300, and the cleaning water are charged into the cleaning hopper 510 at a ratio of 1:1

Here, the incineration ash charged through the cleaning hopper 510 is separated from the pollutants by the high-pressure water injected from the high-pressure injection member 530.

Here, the amount of water injected under high pressure by the injection member 530 is preferably 30% or less of the amount of water injected from the purge hopper 510 together with the fly ash, and is preferably composed of water containing nanobubbles having the same composition as the water injected into the mixing section 300.

Thus, the use of water containing nanobubbles for separation, instead of the conventional fluid containing a cleaning agent for separation alone, enables reuse of the cleaning water in the subsequent contaminant separation step.

On the other hand, the stripping section 540 forms a moving path of the incineration ash, and is configured to increase a flow rate of the incineration ash moving together with the cleaning water in a state where a part of the contaminants is stripped by the high-pressure water.

The stripping section 540 is configured to reduce the hydraulic pressure when the water flow having a high speed and a high pressure passes through a region having a sharply reduced cross section, and the high pressure injection member 530 simultaneously achieves continuous stripping of the ash-incinerated pollutant by cavitation bubbles.

For this purpose, the peeling section 540 has a surface peeling section a, a primary collision section B, and a secondary collision section C in the longitudinal direction.

First, the surface peeling section a is formed in a shape having a diameter sharply reduced from the inlet side so as to increase the flow rate of the contaminated soil, and generates shear stress and vertical stress on the contaminated soil, thereby peeling the contaminants.

That is, in the surface peeling section a, the diameter of the water decreases when the water moves together with the contaminated soil, and therefore, the pressure of the fluid decreases and the flow rate increases, and at this time, the high-pressure water is sprayed onto the contaminated soil, and the pressure of the dissolved oxygen in the high-pressure water decreases, so that bubbles serving as cavitation bubbles are generated and instantaneously collapse to generate impact energy, thereby peeling the contaminants on the surface of the contaminated soil.

As shown in fig. 5, the shearing stress and the vertical stress also have the effect of loss (distribution) and disintegration (disintegration), and the separation of the contaminants adhering to the contaminated soil is achieved.

Cavitation bubbles are not generated in the primary collision zone B, turbulence is formed by pressure change, collision among incineration ash particles is generated, and pollutants attached among particles can be stripped.

Further, secondary separation of contaminants is achieved by collision with the collision member 320 formed at the end portion passing through the secondary collision section C.

In the secondary collision zone C, the volatilized pollutant is discharged to the outside, and the incineration ash from which the pollutant is removed is discharged to the flow rate adjustment tank 710. For this purpose, the cleaning section 500 has a collection port 570 and a cleaning discharge port 580.

The trapping port 570 is formed at an upper portion of the exit side of the secondary collision zone C, and forms a trapping path for trapping volatile contaminants generated when the contaminants are peeled off by collapse of cavitation bubbles.

The purge outlet 580 is formed in the lower portion of the outlet side of the secondary collision zone C, and forms a discharge path for the incineration ash.

In this way, the incineration ash discharged through the washing outlet 580 moves to the settling section and the water treatment section 700 for reuse of the process water.

Meanwhile, the cleaning part 500 may further include an ultrasonic vibrator 550 to generate more cavitation bubbles when the contaminant is peeled off by the collapse of the cavitation bubbles

That is, the ultrasonic vibrator 550 is disposed in the primary collision zone B, and generates acoustic cavitation, so that cavitation bubbles are generated in the primary collision zone B, and impact energy generated when a greater amount of cavitation bubbles collapse is utilized in the secondary collision zone B together with impact energy generated when the structure of the collision member 560 collides.

The cleaning unit 500 can remove clusters between particles by using a high shear stress such as that of a conventional venturi tube to easily classify a large amount of fine particles containing pollutants, and can generate cavitation bubbles by a structure having a predetermined length while drastically reducing a diameter, and when a high-speed and high-pressure water flows in, the atmospheric pressure in the tubule becomes low, and after the dissolved oxygen in the high-pressure water becomes bubble, the cavitation bubbles collapse to be balanced, and the pollutants on the surface of the incineration ash can be peeled off by an impact generated during use.

The cleaning portion 500 has a peeling effect by utilizing impact energy generated when cavitation bubbles collapse, compared to the simple shear stress of the conventional venturi tube.

The cleaning unit 500 uses water containing nanobubbles as cleaning water, and the nanobubbles provide a hydrophobic interface, so that contaminants adhering to the fine particles can be easily peeled off by the permeation effect. This can promote the separation of the inorganic salt and the metal oxide contained in the incineration ash.

In the cleaning section 500, the cavitation bubbles and the process water containing the nanobubbles are mixed to further promote the stripping and dissolution of the inorganic salt and the heavy metal, and the dissolution of Ca contained in the incineration ash can be accelerated, and the carbonate reaction can be additionally generated, so that the re-adsorption and the like in the cleaning process of the pollutants can be prevented, and the purification effect of the incineration ash can be improved.

Referring to fig. 6, the water treatment part 700 may include a flow adjustment tank 710, a coagulation sedimentation tank 720, a process water tank 730, a concentration tank 740, a dehydration dryer 750, and a mixing tank 760.

The flow rate adjustment groove 710 may be provided at the right end of the washing part 500. Also, the flow rate adjustment groove 710 may be provided at a lower portion of the washing part 500. At this time, the wastewater including the purified incineration ash and the stripped contaminant flowing into the flow rate adjustment tank 710 can flow into the condensation precipitation tank 720 by the pump in water.

The coagulation sedimentation tank 720 may be provided in connection with the flow rate adjustment tank 710. At this time, a coagulant may be charged into the coagulation sedimentation tank 720. At this time, the incineration ash flowing into the coagulation sedimentation tank 720 may be sedimented in the incineration ash and the wastewater. Further, by incinerating ash precipitate in the condensation-precipitation tank 720, water can be purified, and the purified water can be transferred to the process water tank 730 again. In this case, the generation of heavy metals exceeds a reference value set by the user, and a stabilization device may be further used.

The process water tank 730 may be provided with a ceramic filter 770 at an upper side of the inside. At this time, the process water tank 730 may purify the particulate heavy metals stripped from the incineration ash, and the soluble heavy metals and water-soluble salts contained in the water by the ceramic filter 770 and the device including the ion exchange and activated carbon 780.

For example, the ceramic filter 770 may remove particulate heavy metals, soluble heavy metals, and particulate heavy metals in water-soluble salts that are present in the wastewater by being stripped from the incineration ash. The process water tank 730 is connected to an apparatus including ion exchange and activated carbon 780, and can remove soluble heavy metals and water-soluble salts in a state where particulate heavy metals are removed.

As described above, the purified water can be reused, and thus can be re-flowed into the nanobubble generating part 400 to be used as washing water.

On the other hand, the incineration ash precipitated in the coagulation and precipitation tank 720 moves to the concentration tank 740 to be concentrated. The concentrated incineration ash is again moved to the dewatering dryer 750, and after removing moisture possibly remaining in the incineration ash, general waste treatment or reuse can be performed.

In this case, when the incineration ash dehydrated and dried by the dehydrator 750 exceeds a reference value required by the user, the incineration ash may be transferred to the separate stabilizer mixing tank 760, stirred, and then subjected to general waste treatment or reuse.

The present utility model uses a plurality of modularized structures to continuously sort, transfer, clean, separate and the like incineration ash input from the input part 100, improves the cleaning efficiency of removing foreign matters or pollutants, adopts a ratio of incineration ash to water of 1:1, uses only cleaning solvent or water at a level which does not need to be neutralized as cleaning liquid, reduces the medicine consumption, waste liquid treatment and water treatment capacity, and can realize general waste materialization or recycling of incineration ash, thereby providing a physical treatment technology without problems.

Furthermore, since the present utility model modules a plurality of components into one device, the apparatus can be simplified, and accordingly, the apparatus can be conveniently moved and used, and if necessary, additional apparatus such as a stabilizer mixing tank can be selectively and simply applied to the modularized device.

In addition, the present utility model achieves primary stripping of pollutants by high-pressure water injection and flow velocity increase, and simultaneously, the incineration ash containing high-speed high-pressure water is hydraulically reduced when passing through a sharp diameter change zone, and the pollutants are stripped by the impact energy applied to the surface of the incineration ash by the collapse of cavitation bubbles generated at this time, and then secondary stripping is achieved by the impact force of collisions between incineration ash particles caused by turbulence generated in a pressure relief zone, and the impact force when colliding with a collision plate at the end achieves tertiary stripping, thereby achieving an effective stripping effect only by a physical treatment process.

Further, as a result of analysis of the crystallization change of the incineration ash before and after the cleaning in fig. 8 and the analysis of the amorphous change of the incineration ash before and after the cleaning in fig. 9, it was confirmed that the carbonate reaction as shown in fig. 10 was also caused in addition to the surface peeling.

As can be seen from fig. 8, the crystalline phases are calcite (CaCO 3), rock (NaCl), potassium salt (KCl) and caclioh (basic calcium chloride), which also include the amorphous phases. After washing with IFA, KCl, naCl, caCl exhibited a characteristic peak, OH disappeared, and the peak intensity of calcite did not change and a new peak was formed by Ca elution. From this, it can be seen that amorphous CaCO3 is formed as a new precipitate during the cleaning of the incineration ash.

To confirm this, amorphous morphology was analyzed by FTIR analysis and is shown in fig. 9.

As can be seen from FIG. 9, the spectrum of the incineration ash before washing exhibited 3643cm ² 1, 3570cm ² 1,3424 cm ² 1 (O-H extension). The bands of 3643 cm.ltoreq.1 and 3570 cm.ltoreq.1 are associated with stretching vibration of Ca-OH and bending vibration of CaClOH of Ca (OH) 2. The 1633cm21 band was associated with the vibration of the H-O-H band between the layers. Bands 1424 cm.ltoreq.1 and 875 cm.ltoreq.1 are due to the presence of amorphous CaCO3 and calcite, respectively.

In the spectrum of the incineration ash after washing, the bands of 3643 cm.ltoreq.1 and 1633 cm.ltoreq.1 gradually decrease with increasing fluid pressure, and the bands of 1424 cm.ltoreq.1 and the band of 712 cm.ltoreq.1 newly appear, which are represented by calcite (calcite). This result shows that Ca (OH) 2 gradually participates in the water washing reaction, and that more Ca (OH) 2 is deformed into CaCO3 in proportion to the increase in the fluid pressure.

From fig. 8 and 9 it was confirmed that additional carbonate reactions as shown in fig. 10 were generated. With high pressure cleaning, the inorganic salt rich layer in the incineration ash can be easily dissolved in cavitation bubbles. The surface Ca and Cl related radicals can be removed by the cleaning process, and as the inorganic salts are removed, ca discharge is accelerated and the characteristics of Ca related phases (phase) are changed, resulting in the formation of amorphous CaCO3, which reacts with carbonate to form precipitate as confirmed in fig. 8.

That is, the removal of Ca and Cl during ash cleaning initiates carbonation (carbonation), which can be illustrated by the reaction principle shown in FIG. 10.

The utility model has the advantages of no limitation on the types and characteristics of polluted matters, wide treatment, wide application range of the device, no use of other chemicals, removal of pollutants only through pure water, easy reuse of washing water, and economic treatment.

The present utility model has been described above with reference to the embodiments shown in the drawings, but this is merely exemplary, and it will be understood by those skilled in the art that various modifications can be made thereto, and all or part of the above-described embodiments may be selectively combined. Accordingly, the technical scope of the present utility model should be defined by the claims.

Claims (9)

1. A modular belt cleaning device for incineration ash is harmless, characterized in that includes:

an input unit for inputting the incineration ash and distributing the incineration ash in a constant amount to be discharged;

a nanobubble generation unit; which generates nanobubbles in water to generate washing water;

a mixing section; a mixing screw portion for extending the mixing time of the incineration ash and the cleaning water while moving the incineration ash and the cleaning water in a predetermined direction is provided inside the mixing screw portion;

a cleaning unit for injecting the incineration ash discharged from the mixing unit and spraying high-pressure water to the incineration ash to peel off the pollutants from the incineration ash; and

a precipitation unit and a water treatment unit for precipitating incineration ash from the wastewater containing the incineration ash and the pollutants after washing, which is discharged from the washing unit, by a coagulant, and discharging the wastewater to a concentration tank for concentration,

the cleaning part includes:

a surface peeling section formed by sharply reducing the diameter of one side of the incineration ash discharged from the mixing section so as to form cavitation bubbles, wherein the pollutant of the incineration ash is peeled off by utilizing impact energy generated during the generation and collapse of the cavitation bubbles, and the pollutant peeling is performed by generating shear stress and vertical stress by high-speed high-pressure water flow;

a primary collision section formed by expanding the inner diameter of the end of the surface separation section so that fluid passing through the surface separation section is caused to flow in a turbulent manner by a pressure change to generate inter-particle collision;

a secondary collision section for causing the fluid passing through the primary collision section to collide with the collision member, thereby further removing the contaminants; and

and the ultrasonic vibrator is arranged in the primary collision zone and is used for generating acoustic cavitation so as to further separate pollutants by utilizing impact energy generated when bubbles collapse.

2. The modular cleaning apparatus for ash incineration as claimed in claim 1, wherein,

the mixing section is configured to perform transfer while removing the ash-incinerated pollutant moving toward the cleaning section in advance by the operation of the nanobubble generating section and the spiral section.

3. The modular cleaning apparatus for ash incineration as claimed in claim 1, wherein,

the surface peeling section is formed by reducing the diameter of the cleaning section on the inlet side and extending for a predetermined length,

the primary collision zone is formed by a sharp expansion or gradual expansion of the diameter.

4. The modular cleaning apparatus for ash incineration as claimed in claim 1, wherein,

the nanobubble generating unit supplies the cleaning water containing nanobubbles to the cleaning unit.

5. The modular cleaning apparatus for ash incineration as claimed in claim 4, wherein,

at the washing part, cavitation bubbles generated in the surface peeling section and washing water containing nanobubbles are mixed to perform peeling and dissolution of inorganic salts and heavy metals.

6. The modular cleaning apparatus for ash incineration as claimed in claim 1, wherein,

the sedimentation portion includes:

a flow rate adjusting tank into which the incineration ash and wastewater to be cleaned flow;

a coagulating sedimentation tank connected to the flow rate adjustment tank, and mixing the incineration ash discharged from the flow rate adjustment tank with a coagulant by flowing the incineration ash into the wastewater;

a process water tank provided with a ceramic filter at the upper part thereof, wherein the purified water at the upper part of the coagulating sedimentation tank after the incineration ash is precipitated flows in and removes the particulate heavy metals in the wastewater; and

and a concentration tank for flowing the incineration ash discharged from the process water tank into the concentration tank and concentrating the incineration ash.

7. The modular cleaning apparatus for ash incineration as claimed in claim 6, wherein,

and a dewatering dryer for removing the incineration ash discharged from the concentration tank and the water contained in the wastewater.

8. The modular cleaning apparatus for ash incineration as claimed in claim 7, wherein,

the process water tank is externally provided with an ion exchange device and activated carbon for further removing soluble heavy metals and water-soluble salts contained in the process water.

9. The modular cleaning apparatus for ash incineration as claimed in claim 8, wherein,

the settling section further includes a stirring tank for adding a stabilizer to the incineration ash discharged from the dewatering dryer and stirring the incineration ash.

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