CN114951206A - Modular cleaning device for harmless incineration ash - Google Patents
Modular cleaning device for harmless incineration ash Download PDFInfo
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- CN114951206A CN114951206A CN202210778723.9A CN202210778723A CN114951206A CN 114951206 A CN114951206 A CN 114951206A CN 202210778723 A CN202210778723 A CN 202210778723A CN 114951206 A CN114951206 A CN 114951206A
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- incineration ash
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- 238000004140 cleaning Methods 0.000 title claims abstract description 115
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 133
- 238000002156 mixing Methods 0.000 claims abstract description 69
- 239000002101 nanobubble Substances 0.000 claims abstract description 50
- 238000005406 washing Methods 0.000 claims abstract description 48
- 239000000356 contaminant Substances 0.000 claims abstract description 29
- 239000002351 wastewater Substances 0.000 claims abstract description 16
- 238000007599 discharging Methods 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims abstract description 9
- 239000007921 spray Substances 0.000 claims abstract description 5
- 239000012141 concentrate Substances 0.000 claims abstract description 3
- 239000002956 ash Substances 0.000 claims description 179
- 238000000034 method Methods 0.000 claims description 45
- 230000008569 process Effects 0.000 claims description 35
- 239000003344 environmental pollutant Substances 0.000 claims description 34
- 231100000719 pollutant Toxicity 0.000 claims description 34
- 229910001385 heavy metal Inorganic materials 0.000 claims description 24
- 238000000926 separation method Methods 0.000 claims description 20
- 150000003839 salts Chemical class 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 13
- 238000005345 coagulation Methods 0.000 claims description 12
- 230000015271 coagulation Effects 0.000 claims description 12
- 238000004062 sedimentation Methods 0.000 claims description 12
- 239000003381 stabilizer Substances 0.000 claims description 12
- 230000008859 change Effects 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 230000018044 dehydration Effects 0.000 claims description 9
- 238000006297 dehydration reaction Methods 0.000 claims description 9
- 238000001784 detoxification Methods 0.000 claims description 9
- 239000000919 ceramic Substances 0.000 claims description 6
- 239000000701 coagulant Substances 0.000 claims description 5
- 238000004090 dissolution Methods 0.000 claims description 5
- 238000005342 ion exchange Methods 0.000 claims description 5
- 239000008213 purified water Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 230000008719 thickening Effects 0.000 claims description 3
- 235000002918 Fraxinus excelsior Nutrition 0.000 claims 1
- 239000002699 waste material Substances 0.000 description 17
- 239000000126 substance Substances 0.000 description 13
- 230000000694 effects Effects 0.000 description 12
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 10
- 239000002689 soil Substances 0.000 description 10
- 239000011575 calcium Substances 0.000 description 9
- 239000011148 porous material Substances 0.000 description 8
- 239000010881 fly ash Substances 0.000 description 7
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 229910021532 Calcite Inorganic materials 0.000 description 5
- 239000010882 bottom ash Substances 0.000 description 5
- 229910000019 calcium carbonate Inorganic materials 0.000 description 5
- 235000010216 calcium carbonate Nutrition 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 4
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- 238000004458 analytical method Methods 0.000 description 4
- 239000010419 fine particle Substances 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 238000011068 loading method Methods 0.000 description 3
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- 238000006386 neutralization reaction Methods 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
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- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
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- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
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- 230000006872 improvement Effects 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B2101/00—Type of solid waste
- B09B2101/55—Slag
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
- C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides a modular cleaning device for harmless incineration ash, which comprises: an input unit for inputting incineration ash and discharging the incineration ash in a constant amount by dispensing; a nano-bubble generating section; which generates nanobubbles in water to generate washing water; a mixing section; which the cleaning water and the incineration ash flow into; a cleaning unit into which the incineration ash discharged from the mixing unit is injected and which sprays high-pressure water to the incineration ash; and a settling section and a water treatment section for settling and incinerating ash in wastewater and discharging the same to a concentration tank to concentrate the same, wherein the cleaning section includes: a surface peeling section formed by rapidly reducing the diameter from one side; a primary collision zone formed by expanding the inner diameter of the end of the surface peeling zone; a secondary collision zone where the fluid having passed through the primary collision zone collides with the collision member to further separate the contaminants; and an ultrasonic vibrator provided in the primary collision section.
Description
Technical Field
The present invention relates to a modular cleaning apparatus for making incineration ash harmless, and more particularly, to a modular cleaning apparatus for making incineration ash harmless, which can continuously perform processes of sorting, transferring, cleaning, classifying, drying, dehydrating, etc. on bottom ash (bottom ash) and fly ash (fly ash) generated from an incineration site by using a plurality of modular structures, thereby effectively removing foreign materials or pollutants of fine particles contained in the incineration ash and realizing the harmless of the incineration ash.
Background
Generally, bottom ash produced in an incineration site is mainly composed of ash, and the amount of heavy metals eluted does not exceed a specified value, but contains a large amount of water-soluble salts. Thus, although it can be disposed of with ordinary waste, recycling is limited. Fly ash contains a large amount of heavy metals and water-soluble salts, is disposed of as a designated waste, and is limited in reuse.
The wastes containing heavy metals are treated as high-priced wastes or relatively low-priced general wastes according to the implementation rules of waste management act (table 1), and the water-soluble salts are regulated by a separate chlorine ion limit value according to the purpose of reuse.
At present, the method mainly applied is that bottom ash in incineration ash is treated as common waste without being treated alone, and other stabilizer and the like are added instead of scattered ash, and the incineration ash is treated as common waste after dissolution of heavy metals is inhibited.
However, if an expensive stabilizer is mixed, the amount of the whole waste increases with the input of the stabilizer, which leads to an increase in transportation cost and disposal cost, and the water-soluble salt cannot be removed and therefore cannot be reused, and improvement is required from the viewpoint of cost saving and effective recycling of waste resources.
The present invention relates to a cleaning technique for incineration ash treatment, particularly non-emission ash treatment, and relates to a technique for removing harmful substances without increasing volume and weight due to mixing of a stabilizer, etc., and treating or recycling the same as general waste.
In general, the cleaning technique refers to a method of eluting and removing contaminants adsorbed on the surface of the contaminants using water or a chemical solvent, or a method of separating and cleaning fine particles and coarse particles aggregated by the contaminants.
However, for example, bottom ash, fly ash, and the like, the particle size is in a uniform range, and substances contaminated with water-soluble salts and heavy metals, heavy metal contamination of large particles, and the like are poor in applicability and limited in use.
The present invention has been made to solve the above-mentioned problems of the prior art and has been made to solve the problems of the research and collaboration of seoul city, korea.
Disclosure of Invention
The invention aims to continuously perform processes of quantitative supply, transfer, cleaning, grading, water treatment, process water reuse, dehydration, drying and the like on incineration ash input through a hopper by utilizing a plurality of modularized components, thereby improving the cleaning efficiency brought by pollutant removal.
Also provided is a modular cleaning device for detoxifying incineration ash, which uses a ratio of fly ash to water of 1:1 to 1:4, uses only a cleaning solvent or water at a level that does not require neutralization as a cleaning liquid, and provides a physical treatment technique that reduces the amount of chemicals used, the volume of waste liquid treated, and the volume of water treated.
The invention achieves the above purpose through the following technical scheme.
The modular cleaning device for the detoxification of incineration ash according to the invention comprises: an input unit for inputting incineration ash and discharging the incineration ash in a constant amount by dispensing; a nano-bubble generating section; which generates nanobubbles in water to generate washing water; a mixing section; a mixing screw part which is used for the washing water and the incineration ash to flow in, extends towards a specified direction, and is internally provided with a mixing screw part which moves the incineration ash and the washing water towards the specified direction and simultaneously prolongs the mixing time of the incineration ash and the washing water; a cleaning unit into which the incineration ash discharged from the mixing unit is injected and which sprays high-pressure water to the incineration ash to remove contaminants from the incineration ash; and a settling section and a water treatment section for settling incineration ash by a coagulant in wastewater containing the cleaned incineration ash and pollutants discharged from the cleaning section and discharging the wastewater to a concentration tank for concentration, the cleaning section including: a surface separation section formed by rapidly reducing the diameter of the incineration ash from one side so as to form cavitation bubbles in the incineration ash discharged from the mixing section, separating pollutants from the incineration ash by using impact energy generated in the processes of generation and collapse of the cavitation bubbles, and performing pollutant separation by generating shear stress and vertical stress by high-speed and high-pressure water flow; a primary collision zone formed by expanding the inner diameter of the end of the surface peeling zone so that the fluid passing through the surface peeling zone is disturbed by a change in pressure to generate inter-particle collision; a secondary collision zone where the fluid having passed through the primary collision zone collides with the collision member to further separate the contaminants; and an ultrasonic vibrator disposed in the primary collision region for generating acoustic cavitation to further separate the contaminants by using impact energy generated when the bubbles collapse.
In the modular cleaning apparatus for detoxifying incineration ash according to the present invention, the mixing unit may be configured to move the incineration ash moving to the cleaning unit while removing the contaminants from the incineration ash by the operation of the nano-bubble generating unit and the spiral unit.
In the modular cleaning apparatus for detoxifying incineration ash according to the present invention, the surface separation zone is formed by reducing the diameter of the inlet side of the cleaning part and then extending the inlet side by a predetermined length, and the primary collision zone is formed by rapidly or gradually increasing the diameter.
In the modular cleaning apparatus for detoxifying incineration ash according to the present invention, the nano-bubble generating unit supplies cleaning water containing nano-bubbles to the cleaning unit.
In the modular cleaning apparatus for detoxifying incineration ash according to the present invention, the cleaning unit mixes cavitation bubbles generated in the surface separation zone with the cleaning water containing nano bubbles to strip and dissolve inorganic salts and heavy metals.
In addition, in the modular cleaning apparatus for detoxifying incineration ash of the present invention, the settling section includes: a flow rate adjusting tank into which the incineration ash and the waste water to be cleaned flow; a coagulation sedimentation tank connected to the flow rate adjustment tank, for allowing the incineration ash discharged from the flow rate adjustment tank and wastewater to flow in and be mixed with a coagulant; a process water tank having a ceramic filter disposed at an upper portion thereof, for allowing purified water at an upper portion of the coagulation sedimentation tank, on which the incineration ash is precipitated, to flow therein and removing particulate heavy metals in the wastewater; and a concentration tank into which the incineration ash discharged from the process water tank flows and concentrates the incineration ash.
In addition, the modular cleaning apparatus for detoxifying incineration ash according to the present invention further includes a dehydration dryer for removing moisture contained in the incineration ash and the wastewater discharged from the thickening tank.
In the modular cleaning apparatus for detoxifying incineration ash according to the present invention, 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 detoxifying incineration ash according to the present invention, the settling section further includes a stirring tank for adding a stabilizer to the incineration ash discharged from the dehydration dryer and stirring the mixture.
The effects of the present invention are as follows.
The present invention utilizes a plurality of modular components to continuously perform processes of feeding, transferring, washing, precipitating, dehydrating and drying, mixing a stabilizer, etc. to incineration ash fed through a hopper, and can improve the cleaning efficiency of 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 cleaning solvent or water as a cleaning solution at a level that does not require neutralization, reducing the amount of chemicals used, waste liquid treatment, and water treatment capacity.
Further, the present invention modularizes a plurality of members into one device, so that the apparatus can be simplified and accordingly can be conveniently moved for use, and if necessary, additional equipment such as a stabilizer mixing device can be selectively and simply applied to the modularized device.
In addition, the invention also realizes the stripping of pollutants on the surface of the incineration ash by utilizing the impact energy generated in the process that cavitation bubbles are generated due to the reduction of hydraulic pressure and collapse of the cavitation bubbles in the process that high-speed and high-pressure water flow passes through a sharp diameter change interval. Then, the turbulence generated by releasing the pressure according to the diameter change induces the collision among the incineration ash particles, the secondary stripping is performed by the collision force among the particles, and the tertiary stripping is performed by the collision force generated when the particles collide with the 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 on the surface of the incineration ash material, even the pollutants trapped in the micro-gaps of the incineration ash, permeable nano-bubbles can be used in the micro-gaps, and water of high pressure water and process water is injected after forming the nano-bubbles through a nano-bubble device.
Therefore, the invention is not limited by the types and characteristics of pollutants, can carry out wide treatment, enlarges the application range of the device, does not use other chemicals, can only remove the pollutants through pure water, can easily recycle the washing water, and has the effect of economic treatment.
Drawings
Fig. 1 is a view showing the overall configuration of a modular cleaning apparatus for detoxifying incineration ash according to an embodiment of the present invention.
Fig. 2 is a view showing a loading part of the modular cleaning apparatus for detoxifying incineration ash according to the embodiment of the present invention.
Fig. 3 is a diagram showing a mixing section of a modular cleaning apparatus for detoxifying incineration ash according to an embodiment of the present invention.
Fig. 4 is a view showing a cleaning unit of the modular cleaning apparatus for detoxifying incineration ash according to the embodiment of the present invention.
Fig. 5 is a view showing a principle of contaminant separation in a cleaning unit of the modular cleaning apparatus for detoxifying incineration ash according to the embodiment of the present invention.
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 detoxifying incineration ash according to the embodiment of the present invention.
Fig. 7 is a view showing a nanobubble generating unit of the modular cleaning apparatus for detoxifying incineration ash according to the embodiment of the present invention.
Fig. 8 is a graph showing the results of analyzing the crystal morphology change by XRD analysis before and after cleaning in order to confirm the principle of making the incineration ash harmless in the example of the present invention.
FIG. 9 is a graph showing the results of FTIR analysis before and after cleaning to analyze the amorphous form change in order to confirm the principle of making incineration ash harmless in the example of the present invention
FIG. 10 is a view showing the principle of making incineration ash harmless according to an embodiment of the present invention.
Description of the symbols
100: input unit, 110: a charging hopper, 120: vibration motor, 130: quantitative conveyer, 140: magnetic force member, 300: mixing section, 310: mixed inflow portion, 311: nanobubble water jet member, 330: mixing body, 350: mixing helix, 370: mixing and discharging part, 400: nanobubble generation unit, 410: pressure pump, 420: generator, 500: cleaning section, 510: cleaning hopper, 520: cleaning the body, 530: high-pressure water injection part, 540: peeling part, 550: ultrasonic vibrator, 560: collision member, 570: a collection port, 580: purge outlet, 700: water treatment unit, 710: flow regulation groove, 720: coagulation sedimentation tank, 730: a process water tank, 740: concentration tank, 750: dewatering dryer, 760: mixing tank, 770: ceramic filter, 780: ion exchange and activated carbon, a: surface peeling interval, B: primary collision zone, C: a secondary collision zone.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The advantages and features of the present invention, and the manner 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 invention is not limited to the following embodiments, and various embodiments are possible, and the present embodiment is only for the purpose of disclosure of the present invention and is intended to explain the scope of the present invention to a person having common knowledge in the technical field to which the present invention pertains, and the present invention is defined by the scope of the claims.
In describing the present invention, if it is determined that the gist of the present invention is unclear by a related known technique or the like, detailed description thereof will be omitted.
Fig. 1 is a view showing the overall configuration of a modular cleaning apparatus for detoxifying incineration ash according to an embodiment of the present invention. Fig. 2 is a view showing a loading part of the modular cleaning apparatus for detoxifying incineration ash according to the embodiment of the present invention. Fig. 3 is a diagram showing a mixing section of a modular cleaning apparatus for detoxifying incineration ash according to an embodiment of the present invention.
Fig. 4 is a view showing a cleaning unit of the modular cleaning apparatus for detoxifying incineration ash according to the embodiment of the present invention. Fig. 5 is a view showing a principle of contaminant separation in a cleaning unit of the modular cleaning apparatus for detoxifying incineration ash according to the embodiment of the present invention.
Fig. 6 is a view showing an incineration ash settling section and a water treatment section for reusing process water of the modular cleaning apparatus for detoxifying incineration ash according to the embodiment of the present invention.
Referring to fig. 1, the modular cleaning apparatus for soil purification of the present embodiment includes: a charging part 100, a mixing part 300, a nano-bubble generating part 400, a washing part 500, a settling part, a water treatment part 700 for reusing process water, a dehydration dryer 750, and a mixing tank 760.
The modular cleaning apparatus for detoxifying incineration ash according to the present embodiment is a modular cleaning apparatus in which a plurality of members are modularized into one unit, and therefore, the apparatus can be simplified, and the modular cleaning apparatus can be used conveniently as a mobile apparatus, and if necessary, additional equipment such as a stabilizer agitation tank can be selectively applied to the modular cleaning apparatus.
The input unit 100 may input fine contaminants such as foreign matters attached to contaminated soil or fly ash generated from incineration ash. That is, only the incineration ash can be charged.
The input unit 100 may include an input hopper 110, a vibration motor 120, a body, and a quantitative conveyor 130 to constantly discharge minute pollutants of the incineration ash and sequentially separate the pollutants.
The input hopper 110 forms an input path of the scattered ash and has a shape that is narrowed from the upper portion toward the lower portion, and thus the incineration ash mixed with the pollutants can be input and moved downward by various devices such as an excavator. A vibration motor 120 may be provided at a lower end of the input hopper 110.
A plurality of vibration motors 120 may be provided on the outer surface of the input hopper 110. This generates vibration, and the incineration ash is easily discharged downward from the input hopper 110. At this time, the incineration ash discharged downward may flow into the quantitative conveyor 130.
The quantitative conveyer 130 transfers the incineration ash by a predetermined amount. Also, the quantitative conveyor belt 130 may be formed to extend to the right side. The loading hopper 110 is provided at the upper left side of the main body, and the mixing unit 300 is provided at the lower right side.
The incineration ash having flowed into the input hopper 110 and the quantitative conveyor 130 can be moved to the mixing section 300 located on the right side. In addition, the quantitative conveyor belt 130 may be driven at a constant speed so that the moving incineration ash is discharged in the same amount. At this time, a magnetic member 140 for removing foreign substances such as bolts and nuts may be provided on the exit side of the quantitative conveyer 130.
The mixing part 300 may include a mixing inflow part 310, a mixing body 330, a mixing screw 350, and a mixing discharge part 370 to move the incineration ash flowing in from the quantitative conveyor 130 and to flow in the cleaning water generated in the nano-bubble generating part 400, and to mix the cleaning water and the incineration ash at the same time, so that the mixing time of the cleaning water and the incineration ash can be extended to peel off the pollutants mixed with or attached to the incineration ash. In this case, the mixing inflow part 310 may be provided with an injection member 311 injecting nano bubble water.
The mixing inflow unit 310 may be provided at the right end of the quantitative conveyer 130 of the input unit 100. Also, the mixing inflow part 310 may be disposed below the quantitative conveyer 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. In addition, a mixing inflow part 310 is provided at the left side of the mixing body 330 to allow the incineration ash discharged from the quantitative conveyor 130 to flow in.
Further, the mixing inflow part 310 may be connected to an injection member 311 through which washing water containing nano bubbles can flow. Thereby, the washing water can flow into the inner side of the mixing body 330. At this time, when the incineration ash and the washing water flowing into the mixing body 330 simultaneously flow into the left side of the mixing body 330 and move to the right side, the incineration ash and the washing water can be mixed and moved.
Further, the ratio of the inflow incineration ash to the washing water may be 1:1 at the minimum and 1:4 at the maximum, and the amount of the washing water for washing the incineration ash may be minimized, and since the washing water may contain nano bubbles, the use of chemicals, which may cause environmental pollution, may be minimized. At this time, a mixing screw 350 may be provided inside the mixing body 330.
The water in which the nano bubbles are generated can clean the pollutants contained in the pores (pores) such as the gaps and the voids formed in the incineration ash having a small particle size. For example, the nanobubbles can clean foreign matters contained in pores (pores) such as gaps and voids formed in fine incineration ash.
For example, the nanobubbles are inserted into gaps or voids (holes) of the incineration ash to replace or scrape out foreign substances such as heavy metals included in the incineration ash, thereby effectively cleaning the foreign substances included in the incineration ash.
That is, foreign matter contained in the incineration ash can be effectively cleaned in the mixing process by the mixing screw 350.
The mixing screw 350 may extend a mixing time of the incineration ash and the washing water when the inflow incineration ash and the washing water move to the right side while being mixed from the left side, and may be formed in a spiral shape to continuously mix the incineration ash and the washing water, thereby maximizing an effect of the washing water having nano bubbles formed therein to strip contaminants of the incineration ash. At this time, a mixing discharge part 370 may be provided at a right end of the mixing body 330.
The mixing discharge part 370 may be provided at a right end of the mixing body 330. Also, the mixing and discharging part 370 may be disposed below the mixing body 330, so that incineration ash and washing water moving through the mixing body 330 may flow into the washing part 500 located below the mixing and discharging part 370.
Referring to fig. 4 and 5, the nano-bubble generating part 400 includes a pressure pump 410 and a generator 420 to generate nano-bubbles in water to produce and supply the washing water flowing into the mixing part 300 and the washing part 500.
Thus, the general water flows into the nano bubble producing unit 400 to produce the washing water used in the entire washing apparatus for detoxifying the incineration ash.
The nanobubble generating unit 400 may include nanobubbles in water. At this time, the water in which the nano bubbles occur may be used as the washing water. The water containing the nanobubbles generated in the nanobubble generation unit 400 may be used as water used in the incineration ash detoxification device.
The water in which the nano bubbles are generated can clean the pollutants contained in the pores (pores) such as the gaps and the voids formed in the incineration ash having a small particle size. For example, the nanobubbles can clean foreign matters contained in pores (pores) such as gaps and voids formed in fine incineration ash.
For example, the nanobubbles are inserted into gaps or voids (holes) of the incineration ash to replace or scrape out foreign substances such as heavy metals included in the incineration ash, thereby effectively cleaning the foreign substances included in the incineration ash.
That is, the nanobubbles are formed in the water used as the high-pressure water and the washing water, so that the water-soluble salt, which is the foreign matter effectively washed by the washing part 500, and the heavy metal effectively washed by the nanobubbles can be simultaneously washed, and thus the washing effect of the incineration ash can be maximized.
The cleaning part 500 may include a cleaning hopper 510, a cleaning body 520, a high pressure spray member 530, a peeling part 540, an ultrasonic vibrator 550, a collision member 560, a trap port 570, and a cleaning discharge port 580 to mix incineration ash flowing into the inside with cleaning water containing nano bubbles to easily peel off contaminants.
The cleaning unit 500 sprays high-pressure water onto the incineration ash and the nanobubble water, which are transferred along the moving path and input from the cleaning hopper 510, to separate pollutants from the incineration ash.
The cleaning unit 500 has a surface peeling section a, a primary collision section B, and a secondary collision section C along the longitudinal direction.
The incineration ash flows into the mixing part 300 through the input part 100, and then the incineration ash peeled off in advance by the mixing part 300 and transferred and the washing water are input into the washing hopper 510 at a ratio of 1:1
Here, the incineration ash charged through the cleaning hopper 510 is stripped of pollutants by the high-pressure water injected by the high-pressure injection member 530.
Here, the amount of water injected at high pressure by the injection member 530 is preferably 30% or less of the amount of water charged from the cleaning hopper 510 together with the fly ash, and is preferably composed of water containing nano bubbles of the same composition as the water charged into the mixing section 300.
Thus, instead of using a fluid containing a cleaning agent for separation alone in the related art, water containing nano bubbles is used for separation, and the cleaning water can be reused in the subsequent contaminant separation step.
On the other hand, the peeling unit 540 forms a moving path of the incineration ash, and is configured to increase the flow rate of the incineration ash moving together with the washing water in a state where part of the contaminants are peeled by the high-pressure water.
The stripping part 540 has a structure in which the hydraulic pressure is reduced when the high-speed and high-pressure water flow passes through the section in which the cross section is sharply reduced, and the high-pressure injection member 530 continuously strips the pollutants present in the incineration ash together with the cavitation bubbles.
For this purpose, the peeling part 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 separation zone a is formed in a shape having a diameter sharply reduced from the inlet side in order to increase the flow velocity of the contaminated soil, and shear stress and vertical stress are generated in the contaminated soil, thereby separating the contaminants.
That is, in the surface separation zone a, since the diameter of the contaminated soil is reduced when the contaminated soil moves together with water, the pressure acting on the moving contaminated soil is increased, the pressure of the fluid is reduced, and the flow rate is increased, and at this time, high-pressure water is injected into the contaminated soil, the pressure of dissolved oxygen in the high-pressure water is reduced, and bubbles as cavitation bubbles are generated and then instantaneously collapse to generate impact energy, thereby separating the contaminants on the surface of the contaminated soil.
As shown in fig. 5, the shear stress and the vertical stress also produce loss (abrasion) and disintegration (disintegration) effects, and the contaminant adhered to the contaminated soil is peeled off.
In the primary collision zone B, cavitation bubbles are not generated, turbulence is generated by a change in pressure, and collision between the soot particles occurs, so that contaminants adhering to the particles can be detached.
Further, the secondary separation of the contaminants is achieved by the collision with the collision member 320 formed at the end portion passing through the secondary collision zone C.
In addition, in the secondary collision zone C, the volatilized pollutants are discharged to the outside, and the incineration ash from which the pollutants are removed is discharged to the flow rate adjustment tank 710. Therefore, the cleaning unit 500 includes a collection port 570 and a cleaning discharge port 580.
The trapping port 570 is formed in the upper portion of the outlet side of the secondary collision zone C, and forms a trapping path for trapping the volatilized contaminants generated when the contaminants are detached by collapse of the cavitation bubbles.
The purge outlet 580 is formed at a lower portion of the outlet side of the secondary collision zone C, and forms a discharge path through which the incineration ash is discharged.
In this way, the incineration ash discharged through the cleaning discharge port 580 moves to the precipitation unit and the water treatment unit 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 separation of the contaminants is performed by the collapse of the cavitation bubbles
That is, the ultrasonic vibrator 550 is provided in the primary collision zone B to generate acoustic cavitation, thereby generating cavitation bubbles 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 the collision energy generated at the time of collision of the structure of the collision member 560 described above, thereby effectively separating contaminants.
The cleaning part 500 can not only remove the agglomeration of particles by using the high shearing stress of the conventional venturi tube to easily classify a large amount of fine particles containing pollutants, but also generate cavitation bubbles by a structure having a predetermined length with a rapidly reduced diameter, and the atmospheric pressure inside the venturi tube becomes low with the inflow of high-speed and high-pressure water flow, so that the dissolved oxygen in the high-pressure water is bubbled, and then the cavitation bubbles are collapsed to reach equilibrium, and pollutants on the surface of the incineration ash are peeled off by the impact energy generated during the process.
The cleaning part 500 has a peeling effect of utilizing impact energy generated when cavitation bubbles collapse, compared to a simple shear stress method of a conventional venturi tube.
In addition, in the cleaning unit 500, water containing nano bubbles is used as cleaning water, and the nano bubbles provide a hydrophobic interface, so that contaminants attached to the fine particles can be easily detached by a permeation effect. This promotes the separation of the inorganic salts and the punching metals contained in the incineration ash.
In the cleaning part 500, the cavitation bubbles and the process water containing the nano bubbles are mixed to further promote the stripping and dissolution of the inorganic salts and the heavy metals, 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 pollutant cleaning process 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 rate 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 a right side end portion 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 containing the purified incineration ash and the peeled contaminants flowing into the flow rate adjustment tank 710 can flow into the coagulation sedimentation tank 720 by the underwater pump.
The coagulation sedimentation tank 720 may be provided in connection with the flow rate adjustment tank 710. At this time, a coagulant may be put into the coagulation sedimentation tank 720. At this time, the incineration ash and the wastewater flowing into the coagulation sedimentation tank 720 may be sedimented. Also, by burning the ash precipitate in the coagulation sedimentation 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 or more, and a stabilizer 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 and soluble heavy metals and water-soluble salts contained in the water, which are stripped from the incineration ash, through the ceramic filter 770 and the apparatus including the ion exchange and activated carbon 780.
For example, the ceramic filter 770 can remove particulate heavy metals, soluble heavy metals, and particulate heavy metals among water-soluble salts, which are present in the wastewater after being stripped from the incineration ash. Further, the process water tank 730 is connected to a device 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 nano bubble generating part 400 to be used as washing water.
On the other hand, the incineration ash precipitated in the coagulation sedimentation tank 720 moves to the thickening tank 740 and is thickened. The concentrated incineration ash is moved to the dehydration dryer 750 again to remove moisture that may remain in the incineration ash, and then general waste treatment or reuse can be performed.
In this case, when the incineration ash dehydrated and dried by the dehydration dryer 750 exceeds a reference value requested by a user, the incineration ash may be transferred to another stabilizer mixing tank 760, stirred, and then subjected to general waste treatment or reuse.
The present invention utilizes a plurality of modularized structures to continuously perform processes such as sorting, transferring, cleaning, separating, etc. of incineration ash input from an input part 100, thereby improving the cleaning efficiency of removing foreign matters or pollutants, and simultaneously, the ratio of the incineration ash to water is 1:1, only cleaning solvent or water of a level which does not need neutralization is used as cleaning liquid, so that the general waste recycling or resource utilization of the incineration ash can be realized while reducing the drug dosage, waste liquid treatment and water treatment capacity, and the physical treatment technology without problems can be provided.
Further, since the present invention modularizes a plurality of components into one unit, the apparatus can be simplified and accordingly can be conveniently moved for use, and additional equipment such as a stabilizer mixing tank can be selectively and simply applied to the modularized unit as necessary.
Further, the present invention realizes primary separation of pollutants by high-pressure water injection and increase of flow velocity, and simultaneously, the incineration ash containing high-speed and high-pressure water is reduced in hydraulic pressure when passing through a sharp diameter change section, pollutants are separated by impact energy applied to the surface of the incineration ash by collapse of cavitation bubbles generated at this time, secondary separation is realized by impact force of collision between incineration ash particles caused by turbulent flow generated in a pressure release section, and tertiary separation is realized by impact force when colliding with a collision plate at the end, thereby realizing effective separation effect only by physical treatment process.
Further, it was confirmed from the results of analysis of the crystal change of the incineration ash before and after cleaning in fig. 8 and analysis of the amorphous change of the incineration ash before and after cleaning in fig. 9 that the carbonate reaction shown in fig. 10 occurred in addition to the surface exfoliation.
As can be seen from fig. 8, the crystalline phases are calcite (CaCO3), slate (NaCl), sylvite (KCl), and caclioh (basic calcium chloride), which also include the amorphous phase. After IFA cleaning, KCl, NaCl and CaCl have characteristic peaks, OH disappears, and the peak intensity of calcite does not change and new peaks are formed through Ca dissolution. As can be seen from this point, during the cleaning of the incineration ash, amorphous CaCO3 was generated as a new precipitate.
To confirm this, the amorphous form 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 showed 3643cm 2 1,3570cm 2 1,3424cm 2 1(O-H extended). The bands 3643 cm.ltoreq.1 and 3570 cm.ltoreq.1 are associated with Ca (OH)2 Ca-OH stretching vibrations and CaClOH bending vibrations. 1633cm 2 The band of 1 is associated with the vibration of the H-O-H band between layers. The 1424 cm. ltoreq.1 and 875 cm. ltoreq.1 bands result from the presence of amorphous CaCO3 and calcite, respectively.
In the spectrum of the cleaned incineration ash, the bands of 3643cm < 1 > and 1633cm < 1 > gradually decrease with the increase of the fluid pressure, and a band of 1424cm < 1 and a newly appeared band of 712cm < 1 appear, which is represented by calcite (calcite). This result indicates that Ca (OH)2 gradually takes part in the water washing reaction, and that more Ca (OH)2 is transformed into CaCO3 in proportion to the fluid pressure rise.
It was confirmed from fig. 8 and 9 that an additional carbonate reaction as shown in fig. 10 was generated. With the high-pressure cleaning, the inorganic salt-rich layer in the incineration ash can be easily dissolved in the cavitation bubbles. The surface Ca and Cl-related functional groups are removed by the cleaning process, Ca discharge is accelerated as the inorganic salts are removed, and the characteristics of the Ca-related phase (phase) are changed, thereby resulting in the formation of amorphous CaCO3, which is confirmed to react with carbonate to form precipitates as shown in fig. 8.
That is, the discharge of Ca and Cl during the incineration ash washing causes carbonation (carbonation), which can be illustrated by the reaction principle shown in fig. 10.
The invention is not limited by the type and the characteristics of the pollutants, can carry out wide treatment, enlarges the application range of the device, does not use other chemicals, can only remove the pollutants through pure water, can easily recycle the washing water, and has the effect of economic treatment.
The present invention has been described above with reference to the embodiments shown in the drawings, but this is merely exemplary, and those having ordinary knowledge in the art can understand that various modifications can be made thereto, and all or part of the above-described embodiments can be selectively combined to constitute. Therefore, the technical scope of the present invention should be defined by the claims.
Claims (9)
1. Modular cleaning device for the harmlessness of ashes deriving from incineration, characterized in that it comprises:
an input unit for inputting incineration ash and discharging the incineration ash in a constant amount by dispensing;
a nano-bubble generating section; which generates nanobubbles in water to generate washing water;
a mixing section; a mixing screw part which is used for the washing water and the incineration ash to flow in, extends towards a specified direction, and is internally provided with a mixing screw part which moves the incineration ash and the washing water towards the specified direction and simultaneously prolongs the mixing time of the incineration ash and the washing water;
a cleaning unit into which the incineration ash discharged from the mixing unit is injected and which sprays high-pressure water to the incineration ash to remove contaminants from the incineration ash; and
a settling section and a water treatment section for settling incineration ash in a waste water containing the cleaned incineration ash and pollutants discharged from the cleaning section by using a coagulant and discharging the waste water to a concentration tank for concentration,
the cleaning part includes:
a surface separation section formed by rapidly reducing the diameter of the incineration ash from one side so as to form cavitation bubbles in the incineration ash discharged from the mixing section, separating pollutants from the incineration ash by using impact energy generated in the processes of generation and collapse of the cavitation bubbles, and performing pollutant separation by generating shear stress and vertical stress by high-speed and high-pressure water flow;
a primary collision zone formed by expanding the inner diameter of the end of the surface peeling zone so that the fluid passing through the surface peeling zone is disturbed by a change in pressure to generate inter-particle collision;
a secondary collision zone for causing the fluid that has passed through the primary collision zone to collide with the collision member and further separating the contaminants; and
and the ultrasonic vibrator is arranged in the primary collision interval and is used for generating acoustic cavitation so as to further separate the pollutants by utilizing impact energy generated when the bubbles collapse.
2. The modular cleaning device for the detoxification of incineration ash according to claim 1,
the mixing section removes the contaminants of the incineration ash moving to the cleaning section in advance and transfers the incineration ash by the operation of the nano-bubble generating section and the spiral section.
3. The modular cleaning device for the detoxification of incineration ash according to claim 1,
the surface peeling section is formed by reducing the diameter of the surface peeling section relative to the inlet side of the cleaning part and extending the surface peeling section for a predetermined length,
the primary collision region is formed by a sharp or gradual diameter expansion.
4. The modular cleaning device for the detoxification of incineration ash according to claim 1,
the nano-bubble generating part supplies washing water containing nano-bubbles to the washing part.
5. The modular cleaning device for the detoxification of incineration ash according to claim 4,
in the washing part, cavitation bubbles generated in the surface peeling zone and washing water containing nano bubbles are mixed to perform peeling and dissolution of inorganic salts and heavy metals.
6. The modular cleaning device for the detoxification of incineration ash according to claim 1,
the settling section includes:
a flow rate adjusting tank into which the incineration ash and the waste water to be cleaned flow;
a coagulation sedimentation tank connected to the flow rate adjustment tank, for allowing the incineration ash discharged from the flow rate adjustment tank and wastewater to flow in and be mixed with a coagulant;
a process water tank having a ceramic filter disposed at an upper portion thereof, for allowing purified water at an upper portion of the coagulation sedimentation tank, on which the incineration ash is precipitated, to flow therein and removing particulate heavy metals in the wastewater; and
a concentration tank into which the incineration ash discharged from the process water tank flows and concentrates the incineration ash.
7. The modular cleaning device for the detoxification of incineration ash according to claim 6,
further comprising a dehydration dryer for removing the incineration ash discharged from the thickening tank and moisture contained in the wastewater.
8. The modular cleaning device for the detoxification of incineration ash according to claim 7,
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 device for detoxifying incineration ash according to claim 8,
the settling section further includes a stirring tank for adding a stabilizer to the incineration ash discharged from the dehydration dryer and stirring the incineration ash.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210778723.9A CN114951206A (en) | 2022-06-30 | 2022-06-30 | Modular cleaning device for harmless incineration ash |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210778723.9A CN114951206A (en) | 2022-06-30 | 2022-06-30 | Modular cleaning device for harmless incineration ash |
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| CN202210778723.9A Pending CN114951206A (en) | 2022-06-30 | 2022-06-30 | Modular cleaning device for harmless incineration ash |
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