KR20170121637A - Manufacturing system of calcium carbonate using the recycling water of ready-mixed concrete - Google Patents

Abstract

The present invention provides a system for manufacturing calcium carbonate using recycled water of ready-mixed concrete. The system for manufacturing the calcium carbonate using the recycled water of the ready-mixed concrete according to an embodiment of the present invention comprises: a precipitation unit, if the recycled water of the ready-mixed concrete being building waste flows into the inside, separating the recycled water of the ready-mixed concrete into supernatant water and sludge by physical stirring and eluting ionized calcium from the sludge to acquire ionized water including ionized calcium; an elution unit, if the supernatant water separated from the sludge flows in from the precipitation, eluting the ionized calcium from the supernatant water to acquire the ionized water including the ionized calcium; a fixating unit making an aqueous amine solution (MEA) with predetermined concentration absorb carbon dioxide in the atmosphere to acquire ionized aqueous amine solution; and a carbonation unit, if the ionized water flows into the inside from the precipitation unit and the elution unit, generating a precipitate through chemical bonding and chemical reaction between the ionized water and the ionized aqueous amine solution flowing in from the fixating unit. Therefore, the present invention fixates the carbon dioxide of the recycled water of the ready-mixed concrete, classified as the building waste, to reduce an amount of generated recycled water of the ready-mixed concrete and to reduce concentration of the carbon dioxide in the atmosphere. In addition, the present invention can acquire powder type calcium carbonate through bonding between the recycled water of the ready-mixed concrete and the carbon dioxide and uses the acquired powder type calcium carbonate as aggregate to be recycled as paper making and building materials.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a calcium carbonate production system using a ready-

The present invention relates to a calcium carbonate production system using a ready-mixed recovered water, and more particularly, to a system for recovering ready-mixed recovered water, which is a construction waste generated during construction and construction, And a calcium carbonate production system using the same.

Generally, in order to construct buildings such as buildings, concrete manufactured by mixing cement, water, admixture and aggregate is used, and it is difficult to manufacture such concrete at a construction site. Therefore, generally, .

Concrete is completed by rubbing cement, water and aggregate in a mixing plant with a stationary mixer, and concrete is poured with a pile data truck or truck mixer to arrive at the construction site without curing the finished concrete, .

However, such a concrete has a problem that it releases a large amount of carbon dioxide from the production process of the cement, the water, the admixture and the aggregate to the process to be manufactured.

A cement kiln dust is added to a solvent based on ammonium chloride or ammonium acetate as disclosed in Korean Patent Registration No. 10-1450697 (registered on October 10, Calcium carbonate is produced by allowing an eluted solution containing calcium (Ca) to be prepared, separating the sediment from the eluted solution and reacting the separated eluate with carbon dioxide at a low temperature. However, This is because the solvent through which the cement kiln dust is added to produce an effluent solution containing calcium is subjected to a single stirring process and is discarded, thereby increasing the consumption of solvent for stirring the cement kiln dust to produce calcium carbonate .

Concrete is left in the pile data truck or truck mixer used for manufacturing and transporting concrete, and the remaining concrete is removed by using washing water to extend the life of the equipment. In this process, The number of times is generated.

Concrete recovered water, which is a construction waste, is regulated for environmental pollution and economic reasons, and most of the recovered water is reused for production. However, in the KS standard, KS F 4009 revised in 1991 made it possible to use recovered water as water used for mixing concrete. In case of using recovered water, the solid content of sludge should not exceed 3% The specification stipulates that withdrawals should not be used.

In addition, due to the recent tightening regulations in the construction sector, construction companies are increasing the use of high-durability concrete, which makes it impossible to re-use the remicon collection water.

In addition, with the development of industrial technology, the concentration of carbon dioxide in the atmosphere increases, and global warming is accelerating. There is a growing need to reduce the generation of carbon dioxide in the environment.

Korean Patent Publication No. 10-1450697

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and apparatus for fixing carbon dioxide in a ready-mixed recovered water classified as construction waste, thereby reducing the concentration of carbon dioxide in the atmosphere, The present invention provides a calcium carbonate production system using a ready-mixed recovery water capable of generating calcium carbonate through combination of carbon dioxide and recovered water.

According to another aspect of the present invention, there is provided a calcium carbonate production system using a ready-mixed recovered water, wherein when the ready-mixed recovered water, which is a construction waste, is introduced into the concrete, So that ionized calcium is eluted from the sludge to obtain ionized water containing the ionized calcium; An elution unit for eluting ionized calcium from the supernatant water to obtain ionized water containing the ionized calcium when the supernatant water separated from the sludge flows from the precipitating unit; An immobilization unit for causing an amine aqueous solution (MEA) having a predetermined concentration to absorb carbon dioxide in the atmosphere to obtain an ionized amine aqueous solution; And a carbonation unit for generating a precipitate through chemical bonding and chemical reaction between the ionized water and the ionized amine aqueous solution introduced from the immobilized unit when the ionized water flows into the settling unit and the eluted unit do.

The carbonated portion may include a filtration portion for separating the ionized water and the ionized amine aqueous solution from the ionized water when the mixture of the ionized water and the ionized amine aqueous solution is introduced through the filtration process, And a drying unit for dehydrating and drying the ionized water filtered from the filtration unit to recover the precipitate of the ionized water.

The calcium carbonate production system may further comprise an amine aqueous solution reuse portion in which the ionized water and the ionized amine aqueous solution are extracted from the filtration portion and the ionized amine aqueous solution is extracted and stored, The ionized amine aqueous solution in the stored state may be introduced into the immobilization unit so that a precipitate is formed from the ionized water flowing into the carbonation unit from the precipitation unit and the elution unit.

The ionized calcium may be eluted by chemical bonding and chemical reaction between the symbol water and the acidic substance so that the first ionized water containing the ionized calcium is obtained when the symbol water flows in from the sinking part .

In addition, when the symbol water flows into the elution unit, the precipitating unit may elute the ionized calcium by chemical bonding and chemical reaction between the sludge and the acidic substance to obtain a second ionized water containing the ionized calcium .

And the carbonated portion is configured such that when the first ionized water is introduced from the elution portion and the ionized amine aqueous solution is introduced from the immobilized portion, the chemical bonding of the first ionized water and the chemical reaction of the ionized amine aqueous solution and the chemical reaction A liquid carbonization unit for causing a precipitate to be formed through the liquid carbonization unit; And when the ionized amine aqueous solution is introduced from the immobilizing unit, the chemical bond of the second ionized water and the ionized amine aqueous solution and the chemical reaction are generated through the chemical reaction And a sludge carbonation unit to allow the sludge to be carbonized.

The filtration unit may include a first filtration unit for filtering the first ionized water and the ionized amine aqueous solution when the mixed liquid in which the first ionized water and the ionized amine aqueous solution are mixed is introduced from the liquid carbonization unit. And a second filtration unit for allowing the second ionized water and the ionized amine aqueous solution to be filtered when the mixed liquid in which the second ionized water and the ionized amine aqueous solution are mixed flows from the liquid carbonization unit, .

When the first ionized water and the ionized amine aqueous solution are separated and extracted from the first filtration unit through the filtration process, the extracted first ionized water is dehydrated and dried so that the precipitate is recovered A second drying unit for drying the first drying unit; And a second drying unit for draining and drying the extracted second ionized water to recover the precipitate when the mixed solution from the second filtration unit is separately extracted by filtering the second ionized water and the ionized amine aqueous solution .

In addition, the sedimenting section may cause the second ionized water to be obtained by the chemical bonding and the chemical reaction so that the non-eluting sludge not having eluted the ionized calcium is obtained, The precipitate can be generated through the chemical reaction with the ionized amine aqueous solution introduced from the immobilization unit and the chemical reaction.

In the calcium carbonate production system, a mixture of the ionized water and the ionized amine aqueous solution is dehydrated and dried at a low temperature of 50 ° C to 70 ° C from the carbonated part, dehydrated and dried at the low temperature and recovered from the mixed solution The obtained precipitate is obtained in powder form, the precipitate obtained in the powder form can be aggregated and reused.

As a result, it is possible to reduce the amount of generated remicon return water and the concentration of carbon dioxide in the atmosphere by fixing the carbon dioxide in the ready-mixed recovered water classified as construction waste.

The calcium carbonate is obtained in the form of powder through the combination of the recovered water and the carbon dioxide, and the calcium carbonate obtained in powder form can be aggregated and recycled as paper and building materials.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing the overall configuration of a calcium carbonate manufacturing system using a ready-mixed recovered water according to an embodiment of the present invention;
FIG. 2 is a view showing the overall configuration of a calcium carbonate production system using a ready-mixed recovered water according to an embodiment of the present invention;
FIG. 3 is a flow chart showing the operation of ionized calcium from elution of precipitated water from the water of emblem according to an embodiment of the present invention. FIG.
FIG. 4 is a flowchart illustrating an operation of ionized calcium released from sludge to produce precipitates according to an embodiment of the present invention. FIG.
FIG. 5 is a flow chart showing a stepwise process of generating a precipitate by eluting ionized calcium from a water sample according to an embodiment of the present invention. FIG.
FIG. 6 is a flowchart illustrating the operation of ionized calcium released from sludge to produce precipitates according to an embodiment of the present invention. Referring to FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below are provided by way of example so that those skilled in the art will be able to fully understand the spirit of the present invention. The present invention is not limited to the embodiments described below, but may be embodied in other states. In order to clearly explain the present invention, parts not related to the description are omitted from the drawings, and the width, length, thickness, etc. of the components may be exaggerated for convenience. Like reference numerals refer to like elements throughout the specification.

FIG. 1 is a block diagram showing a general configuration of a calcium carbonate production system using a ready-mixed recovered water according to an embodiment of the present invention. FIG. 2 is a schematic view of a calcium carbonate production system Fig.

As shown in FIG. 1, the calcium carbonate production system using the ready-mixed recovered water according to an embodiment of the present invention is configured to fix the carbon dioxide of the ready-mixed recovered water classified as construction waste, and to combine the ready- The elution unit 200, the storage unit 300, the carbonation unit 400, the immobilization unit 500, and the amine aqueous solution reuse unit 600 in order to generate calcium carbonate.

The number of ready-mixed concrete can be obtained from the process of cleaning equipment used for manufacturing and conveying concrete such as a mixing plant, a pile data truck or a truck mixer.

In the sedimenting unit 100, when the ready-mixed recovered water flows into the inside and the mixed water of washed water and concrete for washing the ready-mixed recovered water passes the predetermined time, the aggregate is precipitated by the density difference, Can be located.

In the sedimenting unit 100, the number of ready-mixed concrete, which is a construction waste, is placed at the upper part by physical stirring, and the sludge is positioned at the lower part so that the symbol water and the sludge are separated. Gt; ionized water < / RTI >

First, the sedimenting unit 100 allows the number of symbols to be located at the upper part due to the difference in density when the ready-mixed return water, which is a construction waste, is introduced, and the sludge having a solid content can be separated at the lower part.

When the symbol water and the sludge are separated from the ready-mixed recovered water, the sedimenting unit 100 allows the upper water to flow into the elution unit 200.

When the symbolic water flows into the elution unit 200 and the acidic substance in the storage unit 300 is introduced into the sedimentation unit 100, the sedimentation unit 100 allows the ionized calcium to be eluted from the sludge, Ionized water containing ionized calcium can be obtained.

The elution unit 200 allows the ionized calcium to be eluted from the symbol water by the physical stirring when the symbol water containing ionized calcium is introduced from the sedimentation unit 100. Based on the ionized water containing the ionized calcium from the symbol water, It is prepared to acquire.

Specifically, when the acidic substance in the storage part 300 is put into the elution part 200 after the water containing the ionized calcium is introduced from the sedimentation part 100, the elution part 200 separates the ionized calcium And ionized water containing ionized calcium can be obtained from the symbol water on the basis thereof.

At this time, although it has been described that the acidic substance of the storage part 300 is injected into the elution part 200, when the remicon returning water is introduced into the sedimentation part 100 and the number of the representative water and the sludge are separated from the density difference, 200 to allow the acidic substance to flow in the settling unit 100 before the introduction of the symbolic water, and the dissolving unit 200 allows the ionized calcium to be eluted from the mixed water mixed with the acidic substance, Can be obtained.

The storage unit 300 is provided to acquire ionized water containing ionized calcium from the sludge and the symbol water mixed with the sludge of the sedimentation unit 100 and the symbol water of the elution unit 200 obtained from the ready-mixed recovered water.

At this time, the storage unit 300 may be provided with nitric acid or hydrogen chloride so that the ionized calcium is released by chemical coupling and chemical reaction with the sludge of the sedimentation unit 100 and the number of the elution unit 200.

Specifically, the acidic substance of one embodiment of the present invention is at least one of nitric acid or hydrogen chloride at a concentration of 0.1 to 1.5 N, and is at least one to two to one to three times higher than the number of sludges of the sedimentation unit 100 and the elution unit 200 To produce chemical bonding and chemical reaction.

The carbonation unit 400 is a unit that performs chemical bonding and chemical reaction between the ionized water containing ionized calcium obtained from the precipitating unit 100 and the elution unit 200 and the ionized amine aqueous solution flowing from the immobilization unit 500, So that calcium carbonate is produced.

At this time, the carbonated part 400 may be provided separately from the ionized water containing ionized calcium obtained from the precipitating part 100 and the carbonated part into which the ionized water including the ionized calcium obtained from the eluting part 200 flows.

The carbonation unit 400 is configured to cause the ionization water of the sedimentation unit 100 and the ionization water of the elution unit 200 to undergo a liquid phase carbonation through chemical bonding and chemical reaction with the ionized amine aqueous solution of the immobilizing unit 500, Calcium carbonate can be produced, and the liquid phase carbonation process is represented by the following chemical formula (1).

Through the above-described liquid phase carbonation process, the calcium carbonate as a precipitate is formed into a solid form as shown in Chemical Formula (1), whereby it floats in a mixture of ionized water containing carbon dioxide and an ionized water containing ionized calcium (MEA).

When the calcium carbonate, which is a precipitate, is generated from the ionized water of the sedimenting unit 100 and the ionized water of the elution unit 200, the carbonated part 400 filters the mixed solution of the ionized water and the ionized amine aqueous solution (MEA) And the amine aqueous solution (MEA) are filtered and extracted separately, and the ionized water is dehydrated and dried to recover the precipitated calcium carbonate.

In one embodiment of the present invention, when the calcium carbonate, which is a precipitate, is recovered from the carbonation unit 400, the final sludge recovered from the calcium carbonate as a precipitate may be dehydrated, dried and aggregated.

Here, the final sludge is a material composed of cement and small particle aggregates used for concrete production, which is recycled to be aggregated and then rehydrated or dehydrated and dried to concretize the generated sludge, It can be used as an available brick or sidewalk block.

The immobilization unit 500 is provided to generate calcium carbonate as a precipitate through chemical bonding and chemical reaction with the ionized water of the precipitating unit 100 and the ionized water of the dissolution unit 200.

First, the immobilizing unit 500 may allow the predetermined weight percent of the amine aqueous solution (MEA) to absorb the carbon dioxide in the atmosphere to obtain the ionized amine aqueous solution having the carbon dioxide fixed therein.

Here, the amine aqueous solution (MEA) is a monoethanolamine, and the concentration is a value obtained by converting the weight of the amine to the weight of the amine aqueous solution (MEA). In this embodiment, the concentration is 20-30% Means weight, but it can be changed to an example.

The reaction of the amine aqueous solution (MEA) to absorb carbon dioxide is shown in the following chemical formula (1).

The amine aqueous solution (MEA) can be made to fix the carbon dioxide through the chemical absorption through the chemical reaction formula as described above, and the carbon dioxide of the amine aqueous solution (MEA) according to one embodiment of the present invention can be made at room temperature and atmospheric pressure.

The amine aqueous solution reuse unit 600 is used in the carbonation unit 400 as a mixture of the ionized water of the sedimenting unit 100 and the ionized water of the elution unit 200 and the ionized amine aqueous solution (MEA) of the immobilization unit 500 , So that the ionized amine aqueous solution (MEA) is reused.

That is, the amine aqueous solution reuse unit 600 is configured such that the ionized water of the sedimenting unit 100 and the ionized water of the elution unit 200 and the ionized amine aqueous solution (MEA) of the immobilizing unit 500 are mixed in the carbonation unit 400 If separately extracted, separately extracted ionized amine aqueous solution (MEA) can be stored.

The ionized water of the settling unit 100 and the ionized water of the dissolution unit 200 are introduced into the carbonation unit 400 so that the ionized water of the settling unit 100 and the ionized water of the dissolution unit 200 An ionized amine aqueous solution (MEA) in a stored state may be introduced into the carbonation unit 400 through the immobilization unit 500 in order to generate calcium carbonate as a precipitate from the ionized water.

FIG. 3 is a flow chart of operation when ionized calcium is eluted from a representative water according to an embodiment of the present invention to produce a precipitate.

First, in the sedimenting unit 100, when the ready-mixed recovery water flows in, the aggregate is located in the lower part from the ready-mixed recovered water, and the number of the symbol and the sludge are positioned in the upper part.

In the sedimenting unit 100, the number of symbols may be located at the upper part by the physical stirring, and the sludge may be positioned at the lower part.

When the symbol water and the sludge are separated from the ready-mixed recovered water, the sedimentation unit 100 can allow the symbol water to flow into the dissolution unit 200.

When the symbol water is introduced from the settler 100, the elution unit 200 allows the ionized calcium to be eluted from the symbol water, and based on this, the first ionized water containing ionized calcium can be obtained from the symbol water.

Here, the elution unit 200 may cause the symbol number and the acidic substance nitric acid or hydrogen chloride in the storage unit 300 to be chemically combined and chemically reacted to obtain ionized water containing ionized calcium from the symbol water.

That is, the elution unit 200 allows the ionized calcium to be eluted through the chemical bonding and the chemical reaction with the symbol water flowing into the elution unit 200 from the sedimentation unit 100 based on nitric acid or hydrogen chloride in the storage unit 300 A first ionized water containing ionized calcium can be obtained.

If the symbol water and the sludge are separated by the physical stirring in the sedimenting unit 100, nitric acid or hydrogen chloride in the storage unit 300 flows into the sedimentation unit 100 and chemically and chemically Through the reaction, the ionized calcium is eluted from the water of the symbol and the sludge, and the precipitator 100 allows the ionized calcium to be eluted from the representative water in the elution unit 200 so that the ionized water containing the ionized calcium can be introduced.

If the precipitating unit 100 elicits ionized calcium from the representative water in the elution unit 200 and the ionized water containing ionized calcium is introduced into the eluting unit 200, the elution unit 200 allows the ionized water to flow into the carbonation unit 400, The nitric acid or the hydrogen chloride in the storage part 300 may be introduced to elute the ionized calcium again.

When the first ionized water containing ionized calcium is obtained from the elution unit 200 from the elution unit 200, the carbonated unit 400 performs a chemical and chemical reaction with the first ionized water and the ionized amine aqueous solution of the immobilization unit 500 And a liquid carbonization unit 410 for performing liquid carbonation through the liquid carbonation unit 410.

That is, the liquid carbonation unit 410 generates a chemical reaction and a chemical reaction between the first ionized water introduced from the elution unit 200 and the ionized amine aqueous solution (MEA) of the immobilization unit 500, Calcium carbonate, which is a precipitate of calcium carbonate, can be produced.

When the solid carbonated calcium carbonate is produced in the first ionized water through the liquid phase carbonation process of the liquid carbonated part 410, the liquid carbonated part 410 is a mixture of the first ionized water and the ionized amine aqueous solution (MEA) A first filtration section 411 is additionally configured for filtration.

The first filtration unit 411 separates the mixture of the first ionized water and the ionized amine aqueous solution (MEA) from the first ionized water and the ionized amine aqueous solution (MEA) in order to recover the calcium carbonate, .

When the mixed solution of the first ionized water and the ionized amine aqueous solution (MEA) is filtered from the first filtration unit 411, the liquid carbonated part 410 is supplied to the first drying unit (not shown) to recover the calcium carbonate, 412) are additionally configured.

The first drying unit 412 can dehydrate and dry the mixed liquor of the filtered first ionized water and the ionized amine aqueous solution (MEA), thereby recovering calcium carbonate as a precipitate in solid form.

The amine aqueous solution reuse unit 600 can extract an ionized amine aqueous solution (MEA) from a mixture of the first ionized water and the ionized amine aqueous solution (MEA), and store the ionized amine aqueous solution (MEA).

When the first ionized water of the elution unit 200 flows into the liquid carbonation unit 410, the amine aqueous solution reuse unit 600 allows the stored ionized amine aqueous solution (MEA) to flow into the immobilization unit 500, Calcium carbonate, which is a precipitate in solid form, can be produced through chemical bonding and chemical reaction with the first ionized water flowing into the quenching section 410.

FIG. 4 is a flowchart illustrating an operation when ionized calcium is eluted from a sludge according to an embodiment of the present invention to generate precipitates. FIG.

First, in the sedimenting unit 100, when the ready-mixed recovery water flows in, the aggregate is located in the lower part from the ready-mixed recovered water, and the number of the symbol and the sludge are positioned in the upper part.

In the sedimenting unit 100, the number of symbols may be positioned at the upper part by the physical stirring, and the sludge may be positioned at the lower part.

When the symbol water and the sludge are separated from the ready-mixed recovered water, the sedimentation unit 100 can allow the symbol water to flow into the dissolution unit 200.

When the water in the sedimenting unit 100 flows into the leaching unit 200, the sedimenting unit 100 allows the ionized calcium to be eluted from the sludge remaining in the sedimenting unit 100, The second ionization number can be obtained.

Here, the precipitator 100 may cause chemical reaction and chemical reaction between sludge and nitric acid or hydrogen chloride, which are acidic substances of the storage part 300, to obtain ionized water containing ionized calcium from the sludge.

That is, the precipitating unit 100 allows the ionized calcium to be eluted through chemical bonding and chemical reaction with the sludge based on nitric acid or hydrogen chloride of the storage unit 300, and a second ionized water containing ionized calcium can be obtained .

At this time, if the sludge is chemically bonded and chemically reacted with nitric acid or hydrogen chloride which is an acidic substance, cosmetic sludge without ionized calcium leaching can be obtained.

Here, the cosmetic sludge means sludge in which ionized calcium has not been eluted even by physical stirring, chemical bonding and chemical reaction.

When the second ionized water containing ionized calcium is obtained from the sedimenting unit 100 based on the sludge from the sedimenting unit 100, the carbonation unit 400 performs chemical bonding and chemical reaction with the second ionized water and the ionized amine aqueous solution of the immobilizing unit 500 And a sludge carbonation unit 420 for performing liquid carbonation through the sludge carbonation unit 420.

Here, the sludge carbonation unit 420 generates a chemical reaction and a chemical reaction between the second ionized water introduced from the sedimenting unit 100 and the ionized amine aqueous solution (MEA) of the immobilizing unit 500, Calcium carbonate, which is a precipitate of calcium carbonate, can be produced.

If the sludge carbonation unit 420 flows into the sludge carbonation unit 420 from the sedimentation unit 100, the sludge carbonation unit 420 is operated to remove the sludge from the sedimentation unit 100 and the ionized sludge from the immobilization unit 500 Chemical coupling of the amine aqueous solution (MEA) and chemical reaction are generated to cause liquid-phase carbonation, so that calcium carbonate, which is a precipitate in solid form, can be produced.

In addition, when the cosmetic sludge is chemically bonded and chemically reacted with the ionized amine aqueous solution (MEA), the cosmetic sludge itself can directly react with the ionized amine aqueous solution (MEA) without any elution.

When calcium carbonate, which is a solid form, is produced in the second ionized water through the liquid phase carbonation process of the sludge carbonation unit 420, the sludge carbonation unit 420 converts the mixture of the second ionized water and the ionized amine aqueous solution (MEA) A second filtration section 421 is additionally configured for filtration.

The second filtration unit 421 is provided with a mixed solution of the second ionized water and the ionized amine aqueous solution (MEA) in order to recover the calcium carbonate, which is a precipitate in solid form, from the second ionized water and the ionized amine- Can be filtered.

When the mixed solution of the second ionized water and the ionized amine aqueous solution (MEA) is filtered from the second filtration unit 421, the sludge carbonation unit 420 separates the carbonated calcium carbonate, which is a solid form precipitate, 422 are additionally configured.

The second drying unit 422 can dehydrate and dry the mixed solution of the filtered second ionized water and the ionized amine aqueous solution (MEA) to recover the calcium carbonate, which is a precipitate in solid form.

The amine aqueous solution reuse unit 600 allows the ionized amine aqueous solution (MEA) to be extracted from the mixture of the second ionized water and the ionized amine aqueous solution (MEA), and stores the ionized amine aqueous solution (MEA).

When the second ionized water is introduced into the sludge carbonation unit 400, the amine aqueous solution reuse unit 600 is operated so that the ionized amine aqueous solution (MEA) stored in the immobilizing unit 500 is introduced .

The ionized amine aqueous solution (MEA) can be extracted from the mixture of the first ionized water and the ionized amine aqueous solution (MEA), and the ionized amine aqueous solution (MEA) can be stored.

That is, the amine aqueous solution reuse unit 600 allows the ionized amine aqueous solution (MEA) to be extracted from the mixture of the first ionized water, the ionized amine aqueous solution (MEA), the second ionized water, and the ionized amine aqueous solution (MEA) An ionized amine aqueous solution (MEA) can be stored.

When the second ionized water in the sedimenting unit 100 flows into the sludge carbonation unit 420, the amine aqueous solution reuse unit 600 allows the stored ionized amine aqueous solution (MEA) to flow into the immobilization unit 500, Calcium carbonate, which is a solid form precipitate, can be produced through chemical bonding and chemical reaction with the second ionized water flowing into the second ionized water 420.

FIG. 5 is a flowchart illustrating a stepwise process of generating precipitates by eluting ionized calcium from a water sample according to an embodiment of the present invention.

First, when the ready-mixed recovery water flows into the sedimentation unit 100, the ready-mixed collected water is separated into the representative water and the sludge by physical stirring (S710).

At this time, the symbol water is located above the sedimenting unit 100 by the physical stirring, and the sludge may be positioned below the sedimenting unit 100.

Here, the physical stirring to separate the symbol water and the sludge can be carried out at a temperature of 400-800 rpm for 3 hours to 24 hours at 15 to 40 캜.

The settling unit 100 may separate the symbol water from the sludge and allow the separated symbol water to flow into the dissolving unit 200.

When the water of the settling portion 100 flows into the dissolving portion 200, the dissolving portion 200 allows the ionized calcium to be eluted through chemical bonding and chemical reaction between the water of the symbol and the acidic substance, So that the first ionized water is obtained (S720).

Specifically, when the embedding unit (100) receives the embroidery water, the elution unit (200) absorbs at least one acidic substance such as nitric acid or hydrogen chloride from the storage unit (300) Whereby ionized calcium is eluted and a first ionized water containing ionized calcium is obtained.

When the first ionized water is obtained from the elution unit 200 and the obtained first ionized water flows into the carbonation unit 400, the carbonation unit 400 performs chemical bonding between the first ionized water and the ionized amine aqueous solution (MEA) A chemical reaction is performed to generate calcium carbonate, which is a solid form precipitate (S730).

At this time, the first ionized water obtained from the elution unit 200 may be introduced into the liquid carbonation unit 410 for generating calcium carbonate based on the ionized water obtained from the water in the carbonation unit 400.

When the first ionized water flows into the liquid carbonization unit 410, the ionized amine aqueous solution (MEA) that absorbs the carbon dioxide stored in the immobilization unit 500 is introduced into the liquid carbonated unit 410, and the first ionized water and the ionized amine aqueous solution Chemical bonding and chemical reaction can produce calcium carbonate, a precipitate in solid form.

In order to recover the calcium carbonate, which is a solid form precipitate, from the mixture of the first ionized water and the ionized amine aqueous solution (MEA), the liquid carbonation unit 410 separates the first ionized water and the ionized amine aqueous solution (MEA) (S740).

At this time, the liquid carbonation unit 410 may include a first filtering unit 411 for filtering a mixture of the first ionized water and the ionized amine aqueous solution (MEA).

Here, when the mixture of the first ionized water and the ionized amine aqueous solution (MEA) is filtered through the first filtration unit 411, the liquid carbonation unit 410 converts the mixture of the first ionized water and the ionized amine aqueous solution (MEA) And the ionized amine aqueous solution (MEA) is allowed to flow into the amine aqueous solution reuse unit 600. The ionized amine aqueous solution (MEA)

If the amine aqueous solution (MEA) extracted from the mixture of the first ionized water and the ionized amine aqueous solution (MEA) flows into the amine aqueous solution reuse portion 600, the amine aqueous solution reuse portion 600 may be an ionized amine aqueous solution Can be mixed with the first ionized water flowing into the liquid carbonation unit 400 by allowing the first ionized water to flow into the immobilization unit 500.

When the mixture of the first ionized water and the ionized amine aqueous solution (MEA) is subjected to the filtration process from the first filtration unit 411, the liquid carbonation unit 410 mixes the mixture of the first ionized water and the ionized amine aqueous solution (MEA) (S750), the mixed solution of the first ionized water and the ionized amine aqueous solution (MEA) is dehydrated and dried to recover calcium carbonate as a solid form precipitate.

Here, the liquid carbonation unit 410 may include a first drying unit 412 for dehydrating and drying the mixed solution of the first ionized water and the ionized amine aqueous solution (MEA).

The first drying unit 412 may be configured to dry the mixed solution of the first ionized water and the ionized amine aqueous solution (MEA) at a low temperature of 50 ° C to 70 ° C in order to recover the calcium carbonate, which is a solid form precipitate.

When the mixed solution of the first ionized water and the ionized amine aqueous solution (MEA) is dehydrated and dried from the first drying unit 412, the calcium carbonate which is a solid form precipitate is recovered (S760).

At this time, when the calcium carbonate, which is a solid form precipitate, is dried at a low temperature through the first drying unit 412, calcium carbonate, which is a precipitate, can be obtained in the form of powder, and such powder calcium carbonate is reused .

FIG. 6 is a flowchart illustrating an operation of ionized calcium released from sludge to produce precipitates according to an embodiment of the present invention. Referring to FIG.

5, when the ready-mixed recovery water flows into the sedimentation unit 100, the ready-mixed collected water is separated into the representative water and the sludge by physical stirring (S810).

The symbol water of the sedimenting unit 100 flows into the elution unit 200. The sedimenting unit 100 allows the ionized calcium to be eluted through chemical bonding and chemical reaction between the remaining sludge and the acidic substance, (Step S820).

Specifically, the sedimenting unit 100 allows the ionized calcium to be eluted through the chemical bonding and the chemical reaction between the sludge remaining after being separated from the symbol number of the ready-mixed recovered water and the acidic substance of at least one of nitric acid or hydrogen chloride from the storage unit 300 , So that a second ionized water containing ionized calcium can be obtained.

When the second ionized water is obtained from the precipitating unit 100 and the obtained second ionized water flows into the carbonation unit 400, the carbonation unit 400 performs chemical bonding between the second ionized water and the ionized amine aqueous solution (MEA) The calcium carbonate, which is a precipitate in solid form, is produced through a chemical reaction (S830).

At this time, the second ionized water obtained from the precipitating unit 100 may be introduced into the sludge carbonation unit 420 for generating calcium carbonate based on the ionized water obtained from the sludge in the carbonation unit 400.

When the second ionized water flows into the sludge carbonation unit 420, the ionized amine aqueous solution (MEA) absorbing the carbon dioxide stored in the immobilization unit 500 flows into the sludge carbonation unit 420, and the second ionized water and the ionized amine aqueous solution Chemical bonding and chemical reaction can produce calcium carbonate, a precipitate in solid form.

The sludge carbonation unit 420 separates the mixture of the second ionized water and the ionized amine aqueous solution (MEA) from the mixture of the second ionized water and the ionized amine aqueous solution (MEA) (S840).

Here, the sludge carbonation unit 420 may include a second filtering unit 421 for filtering a mixture of the second ionized water and the ionized amine aqueous solution (MEA).

When the mixed solution of the second ionized water and the ionized amine aqueous solution (MEA) is filtered through the second filtration section 421, the sludge carbonation section 420, like the liquid carbonation section 410, The ionized amine aqueous solution (MEA) may be extracted from the mixed solution of the amine aqueous solution (MEA) and the ionized amine aqueous solution (MEA) may be introduced into the amine aqueous solution reuse unit 600.

If the amine aqueous solution (MEA) extracted from the mixed solution of the second ionized water and the ionized amine aqueous solution (MEA) flows into the amine aqueous solution reuse unit 600, the amine aqueous solution reuse unit 600 may generate an ionized amine aqueous solution Can be mixed with the second ionized water flowing into the liquid carbonation unit 400 by allowing the second ionized water to flow into the immobilization unit 500.

When the mixture of the second ionized water and the ionized amine aqueous solution (MEA) is subjected to the filtration process from the second filtration unit 421, the sludge carbonation unit 420 converts the mixture of the second ionized water and the ionized amine aqueous solution (MEA) The second ionized water and the ionized amine aqueous solution (MEA) are dehydrated and dried (S850) in order to recover the calcium carbonate, which is a solid form precipitate.

At this time, the sludge carbonation unit 420 may include a second drying unit 422 for dehydrating and drying the mixed solution of the second ionized water and the ionized amine aqueous solution (MEA).

The second drying unit 422 is operated so that the mixture of the second ionized water and the ionized amine aqueous solution (MEA) is heated to a temperature of 50 ° C to 70 ° C so that the calcium carbonate, which is a precipitate in solid form, It can be dried at a low temperature.

As in the first drying unit 412, the second drying unit 422 drains the mixed solution of the second ionized water and the ionized amine aqueous solution (MEA), thereby recovering calcium carbonate, which is a precipitate in solid form (S860) .

At this time, when calcium carbonate, which is a solid form precipitate, is dried at a low temperature through the second drying unit 422, calcium carbonate, which is a precipitate, can be obtained in the form of powder like the first drying unit 412, Calcium can be reused as paper or building materials.

The calcium carbonate production system using the ready-mixed recovered water according to an embodiment of the present invention has an effect of reducing the amount of generated remicon return water and the concentration of carbon dioxide in the atmosphere by fixing the carbon dioxide of the ready-mixed recovered water classified as construction waste .

The calcium carbonate is obtained in the form of powder through the combination of the recovered water and the carbon dioxide, and the calcium carbonate obtained in powder form can be aggregated and recycled as paper and building materials.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the invention as defined by the appended claims. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

100: sedimentation part 200:
300: storage part 400: carbonated part
410: Liquid carbonation part 411: First filtration part
412: first drying section 420: sludge carbonation section
421: first filtering section 422: second drying section
500: immobilization unit 600: amine aqueous solution reuse unit

Claims (10)

A sedimentation unit for separating the ready-mixed recovery water into physically stirred sediment and sludge when the ready-mixed return water, which is a construction waste, flows into the sedimentation unit, and ionized calcium is eluted from the sludge to obtain ionized water containing the ionized calcium;
An elution unit for eluting ionized calcium from the supernatant water to obtain ionized water containing the ionized calcium when the supernatant water separated from the sludge flows from the precipitating unit;
An immobilization unit for causing an amine aqueous solution (MEA) having a predetermined concentration to absorb carbon dioxide in the atmosphere to obtain an ionized amine aqueous solution; And
And a carbonation unit for generating a precipitate through chemical bonding and chemical reaction between the ionized water and the ionized amine aqueous solution introduced from the immobilized unit when the ionized water flows into the immersion unit and the elution unit ≪ / RTI > The method according to claim 1,
The carbonated portion
A filtration unit for separating the ionized water and the ionized amine aqueous solution from the ionized water when the mixed solution containing the ionized water and the ionized amine aqueous solution is introduced and separated through filtration; And
And a drying unit for dehydrating and drying the ionized water filtered from the filtration unit to recover the precipitate of the ionized water. 3. The method of claim 2,
And an amine aqueous solution reuse unit for extracting and storing the ionized amine aqueous solution when the ionized water and the ionized amine aqueous solution are filtered from the filtration unit,
The amine aqueous solution-
Wherein the ionized amine aqueous solution in the stored state is introduced into the immobilization unit so that a precipitate is formed from the ionized water flowing into the carbonated part from the precipitation unit and the elution unit. The method according to claim 1,
The elution unit
Wherein the ionized calcium is eluted by chemical bonding and chemical reaction between the symbol water and the acidic substance so that the first ionized water containing the ionized calcium is obtained when the symbol water flows in from the settling portion, Calcium production system. 5. The method of claim 4,
The settling portion includes:
Wherein the ionized calcium is eluted by chemical bonding and chemical reaction between the sludge and the acidic substance and the second ionized water containing the ionized calcium is obtained when the symbol water flows into the elution unit . 6. The method of claim 5,
The carbonated portion
So that when the first ionized water is introduced from the elution unit and the ionized amine aqueous solution is introduced from the immobilized unit, a precipitate is formed through the chemical reaction and the chemical reaction of the first ionized water and the ionized amine aqueous solution ; And
So that when the second ionized water is introduced from the settling portion and the ionized amine aqueous solution is introduced from the immobilized portion, a precipitate is formed through the chemical bonding of the second ionized water and the ionized amine aqueous solution and the chemical reaction And a sludge carbonation unit for sludge formation. The method according to claim 6,
The filtration unit,
A first filtration unit for allowing the first ionized water and the ionized amine aqueous solution to be filtered when the mixed liquid in which the first ionized water and the ionized amine aqueous solution are introduced from the liquid carbonization unit flows; And
And a second filtration unit for filtering the second ionized water and the ionized amine aqueous solution when the mixture of the second ionized water and the ionized amine aqueous solution is introduced from the liquid carbonization unit, ≪ / RTI > 8. The method of claim 7,
The drying unit includes:
And a second drying unit for draining and drying the extracted first ionized water to recover the precipitate when the mixed solution is separated and extracted from the first filtration unit through the filtration process of the first ionized water and the ionized amine aqueous solution, ; And
And a second drying unit for draining and drying the extracted second ionized water so that the precipitate is recovered when the mixed solution is separated from the second ionized water and the ionized amine aqueous solution by the second filtration unit The calcium carbonate production system. 5. The method of claim 4,
The settling portion includes:
The second ionized water is obtained by the chemical bond and the chemical reaction so that the ionized calcium is extracted from the unexcited cosmetic sludge,
The carbonated portion
And the precipitate is formed through the chemical reaction with the ionized amine aqueous solution introduced from the immobilization unit and the chemical reaction without elution of the cosmetic sludge. The method according to claim 1,
The mixed solution of the ionized water and the ionized amine aqueous solution is dehydrated and dried from the carbonated part at a low temperature of 50 ° C to 70 ° C and dehydrated and dried at the low temperature to obtain the precipitate recovered from the mixed solution in powder form , The precipitate obtained in the form of powder is aggregated and reused.

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