JPH09278504A - Aqueous solution of inorganic chloride - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an aqueous solution of an inorganic salt excellent in hardening effect and modifying effect on soil, etc., by blending chlorides of Na, K, Li, Ba, Ni, Ca, Mg, Mn, Sr and Rb with potassium bromide. SOLUTION: This aqueous solution of an inorganic salt is obtained by blending sodium chloride, potassium chloride, lithium chloride, barium chloride, potassium bromide, nickel chloride, calcium chloride, magnesium chloride, manganese chloride, strontium chloride and rubidium chloride in a specific ratio. The blending ratio is properly 8.33wt.% of sodium chloride, 12.53wt.% of potassium chloride, 0.16wt.% of lithium chloride, 1.2wt.% of barium chloride, 0.6wt.% of potassium bromide, 1wt.% of nickel chloride, 0.8wt.% of calcium chloride, 0.8wt.% of magnesium chloride, 0.6wt.% of manganese chloride, 0.4wt.% of strontium chloride and 0.16wt.% of rubidium chloride. The prepared aqueous solution of the inorganic salt is useful as a soil hardening agent, a waste treating agent, a cement improver, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inorganic chloride aqueous solution used as, for example, an inorganic soil hardening agent, a waste treatment agent, or a cement modifier.

[0002]

2. Description of the Related Art Conventional soil hardening agents include, for example, portland cement. As is well known, this Portland cement is mainly composed of limestone and clay, and its ingredients are adjusted by adding silica stone and slag having a high iron content, finely pulverized, and heated to a temperature of 1400 ° C. or higher at which a part melts to react and fire. It is produced by tying it into a clinker, adding a small amount of gypsum to it, and then pulverizing it.
However, in order to use such conventional cement-based soil hardening agents as concrete, the required strength cannot be obtained unless aggregates such as sand and gravel are selected and used. In addition, sludge, sludge, and incineration are required. There is a problem that it is difficult to cure ash, clay, volcanic ash, waste, etc. with the above-mentioned conventional cement-based soil hardening agents.

On the other hand, in recent years, garbage and waste (various industrial wastes such as coal ash discharged from thermal power plants)
However, the fly ash after incineration (eyelash) is particularly harmful for heavy metals such as Pb (lead) and Cd (cadmium). Therefore, there is a demand for a means for treating such garbage and waste while protecting the natural environment.

[0004]

The invention according to claim 1 of the present invention is capable of solidifying by utilizing the soil at the site as it is, without selecting aggregates such as sand and gravel unlike conventional concrete. Besides, it can also cure sludge, sludge, incineration ash, volcanic ash, industrial waste, coal ash that can not be expected to be hardened only with ordinary Portland cement, inorganic soil hardener for all soils, waste treatment agent, The purpose of the present invention is to provide an extremely useful inorganic chloride aqueous solution as a cement modifier.

According to the second aspect of the present invention, in addition to the object of the first aspect of the invention, the composition ratio of the inorganic chloride constituting the aqueous inorganic chloride solution is set to a predetermined weight percentage, respectively. It is an object of the present invention to provide an inorganic chloride aqueous solution capable of ensuring a deodorizing action (neutralizing action) with pH (pH, an index representing a hydrogen ion concentration) = 7.

[0006]

The invention according to claim 1 of the present invention is sodium chloride, potassium chloride, lithium chloride, barium chloride, potassium bromide, nickel chloride, calcium chloride, magnesium chloride, manganese chloride, strontium chloride. And rubidium chloride, which is an inorganic chloride aqueous solution in which a predetermined ratio is mixed.

According to a second aspect of the present invention, in combination with the configuration of the first aspect of the invention, the predetermined ratios are sodium chloride 8.33 wt% and potassium chloride 12.53 wt%.
%, Lithium chloride 0.16 wt%, barium chloride 1.20
wt%, potassium bromide 0.60 wt%, nickel chloride 1 wt
%, Calcium chloride 0.80 wt%, magnesium chloride 0.80 wt%, manganese chloride 0.60 wt%, strontium chloride 0.40 wt%, rubidium chloride 0.16 wt%
It is an inorganic chloride aqueous solution set to.

[0008]

According to the invention described in claim 1 of the present invention, since the above-mentioned inorganic chlorides are mixed to form an aqueous solution of inorganic chloride, this aqueous solution of inorganic chloride is used in combination with Portland cement. When the target is treated and hardened (sludge, sludge, incineration ash, volcanic ash, industrial waste, coal ash, etc.) and water, it is stirred and water, and simultaneously with the hydration reaction of Portland cement, A needle-like crystal is formed by ionic bond, and a modifier capable of binding organic and inorganic substances is obtained by a reaction of changing to a crystalline substance that exceeds water hydration and does not accompany water.

Therefore, it has an excellent action such as chemical resistance, heat resistance, water permeability, weather resistance, and durability that exceeds the hardening effect due to the hydration reaction of the hardening cement, and maintains the hardening property for a long time. There is an effect that can be. Moreover, it is easy to carry out without selecting and using aggregates such as sand and gravel required for conventional concrete, and it is possible to use the soil at the site as it is for solidification and to use ordinary Portland cement. It can also cure and solidify sludge, sludge, incinerated ash, volcanic ash, industrial waste, coal ash that cannot be hardened with, as an inorganic soil hardening agent for all soils, waste treatment agent, cement modifier It has a very useful effect.

In addition, the above-mentioned inorganic chloride aqueous solution is used in combination with a small amount of cement to solidify the object to be treated and hardened (sludge, sludge, incinerated ash, volcanic ash, waste, coal ash, etc.) and to stabilize it for a long period of time. Since it is masked and not re-eluted, this solidified product can be reused effectively as a secondary processed product while satisfying all the conditions that exist in nature such as strength, weather resistance, chemical resistance, etc. While protecting it, it can contribute to pollution prevention and resource saving.

According to the second aspect of the present invention,
In addition to the effect of the invention described in claim 1, since the composition ratio of the inorganic chloride that constitutes the above-mentioned inorganic chloride aqueous solution is each set to a predetermined weight percent, the deodorizing effect (neutralizing effect) is set at pH = 7. There is an effect that can be secured.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. The inorganic chloride aqueous solution of the present invention has a total of 1% of each of the following inorganic chlorides in a predetermined weight percentage.
It is produced by mixing with water so that the concentration becomes 00 wt%.

That is, sodium chloride 8.33 wt%,
12.53 wt% potassium chloride, 0.16 wt lithium chloride
%, Barium chloride 1.20 wt%, potassium bromide 0.60
wt%, nickel chloride 1 wt%, calcium chloride 0.80 wt
%, Magnesium chloride 0.80 wt%, manganese chloride 0.
60 wt%, strontium chloride 0.40 wt%, rubidium chloride 0.16 wt% and sodium bromide 0.60 wt% are mixed with water to produce pH = 7 (Medieval). The above-mentioned sodium bromide is not essential.

The inorganic chloride aqueous solution (special cement hardening liquid) thus constituted has a volume ratio of about 6 to that of the raw material.
% Before and after mixing, it can be used in a cement construction method for hardening and solidifying sludge, sludge, incinerated ash, volcanic ash, industrial waste, and coal ash by mixing together with Portland cement.

Next, an example of solidifying fly ash (coal ash discharged from a thermal power plant among industrial wastes) by using the inorganic chloride aqueous solution having the above-mentioned structure and the test results thereof will be described. Snow melting agent (high thermal conductivity ceramic) 2
0 vol%, fly ash 30 vol%, sand (sea sand is acceptable) 2
Water (seawater is also acceptable) and 6 vol% of the inorganic chloride aqueous solution of the present invention for 0 vol% and 30 vol% of cement
Was mixed, cured and solidified, and the compressive strength and the compressive strength were measured after 21 days, and the compressive strength was 428 kg / cm.
² and bending strength of about 60 kg / cm ² was recorded. As the inorganic chloride, cobalt chloride, which is a factor of weakening the lateral strength, is not used, so that sufficient bending strength can be secured.

Here, the above-mentioned compression strength has the property of increasing as the time passes. This is presumed to be that what has solidified crystallizes over time. As for the snow melting effect, the same result as that of road snow melting mixed with general asphalt was shown. Therefore, the solidified product of the inorganic chloride aqueous solution of the present invention can be effectively used as a secondary processed product for snow melting roof tiles, tiles, and sidewalk flat plates (interlocking).

Next, examples of solidifying fly ash (coal ash) and general incinerated ash using the aqueous solution of inorganic chloride having the above-mentioned structure and the test results thereof will be described. Snow melting agent 10
vol%, fly ash 10 vol%, general incineration ash 20 vol%,
Human waste treatment residue 10vol%, sand 20vol%, cement 30vol%
Water and 6 vol% of the inorganic chloride aqueous solution of the present invention were mixed with the compounding ratio of 5%, and the mixture was cured and solidified, and after 7 days, a compression strength test and a heavy metal elution test were carried out. As a result, the compression strength was 328 kg / The cm ² heavy metal elution test satisfied the water quality standard, and it was found that there was no concern about secondary pollution of industrial waste use. As a result of conducting the heavy metal elution test again after 37 days, it was found that the water quality standard was sufficiently cleared.

From these test results, it was confirmed that even when it was used as a secondary processed product, it could be made into a sufficiently strong material, and the melted water had no adverse effect on the human body or agricultural products. Incidentally, the test results of the hardening liquid concrete elution test (method stipulated in the Environmental Agency Notification No. 13) for the above mixing ratio are as follows.

Cadmium: less than 0.005 mg / l Total cyan: less than 0.01 mg / l Organophosphorus: less than 0.1 mg / l Lead: less than 0.02 mg / l Hexavalent chromium: 0.04 mg / l Less than l Arsenic …… less than 0.01 mg / l Total mercury …… less than 0.0005 mg / l Alkyl mercury …… less than 0.0005 mg / l PCB …… less than 0.0005 mg / l.

Next, for the purpose of testing the elution of harmful substances from the object to be treated and cured which has been solidified using the aqueous solution of inorganic chloride having the above-mentioned structure, PCB (polychlorinated bifaire, an organic chlorine compound as a harmful substance) is solidified. The examples and the test results in the case of doing so will be described.

PCB (20.000 PPM, with spindle oil containing 2% PCB) 500 cc, coal ash 2
A mixture of 0 vol%, 30 vol% of cement, 30 vol% of sand, 6 vol% of water and an inorganic chloride aqueous solution to make 100 vol% as a whole, hardened, solidified, and solidified after 7 days, a test body of 1 to 2 cm It was crushed into horns and made into crushed pieces. And
40 vol% of this crushed piece, 30 vol% of sand, 30 cement
Mix 6% by volume of water and an inorganic chloride aqueous solution to the mixture at a mixing ratio of vol%, cure and solidify again,
As a result of conducting a heavy metal elution test after 30 days, it was found that the water quality standard was sufficiently satisfied. From such test results, it was possible to easily and easily carry out the treatment of harmful substances (hexavalent chromium, PCB, etc.), particularly harmful metals, by using the above-mentioned inorganic chloride aqueous solution.

By the way, the test results of the hardening liquid concrete elution test (method stipulated by the Environmental Agency Notification No. 13) for the above-mentioned mixing ratio (PCB 2%) are shown below. Cadmium: less than 0.005 mg / l Total cyanide: less than 0.01 mg / l Organophosphorus: less than 0.1 mg / l Lead: less than 0.02 mg / l Hexavalent chromium: less than 0.12 mg / l Arsenic …… Less than 0.01 mg / l Total mercury …… Less than 0.0005 mg / l Alkyl mercury ・ ・ ・ Less than 0.0005 mg / l PCB …… Less than 0.0005 mg / l

Next, the results of the compressive strength test when the cement construction method is carried out using the above-mentioned inorganic chloride aqueous solution are shown. Characteristic a shown in FIG. 1 is that Portland cement 50k
g, 50 liters of sea sand, the inorganic chloride aqueous solution of the present invention 4.
5 liters, seawater slump 25 cm, sludge content 20 to 3
The characteristics are for the formulation of 0%, with the horizontal axis representing days and the vertical axis representing pressure (psi) (3500 psi = 250 kgf / cm ² in pounds per square inch). Characteristic b shown in FIG. 1 is the characteristic for a mixture of Porland cement 50 kg, sea sand 100 liter, the inorganic chloride aqueous solution of the present invention 9.0 liter, sea water slump 25 cm, and a sludge content of 20 to 30%. Show.

Characteristic c shown in FIG. 2 is 50 kg of Portland cement, 50 liters of river sand or mountain sand, 4.5 liters of the inorganic chloride aqueous solution of the present invention, 25 cm of river water slump,
The characteristics are shown for those blended with a sludge content of 40 to 50%. The characteristic d shown in FIG. 2 is 50 kg of Portland cement, 100 liters of river sand or mountain sand, 9.0 liters of the inorganic chloride aqueous solution of the present invention, 25 cm of river water slump,
The characteristics are shown for those blended with a sludge content of 40 to 50%.

The characteristic e shown in FIG. 3 is as follows: Portland cement 966 kg, river sand 1100 kg, water ash ratio slump 23-2.
The characteristics are shown for a mixture of 5 cm and 60 liter of the inorganic chloride aqueous solution of the present invention. Characteristic f shown in FIG.
Is, Portland cement 966kg, general household waste incineration ash 0.45m ^3, river sand 0.3m ^3, Mizuhaihi slump 23
The characteristics are shown for a mixture of ˜25 cm and 60 liters of the inorganic chloride aqueous solution of the present invention.

The characteristic shown in FIG. 5 g portland cement 966Kg, coal ash 0.45 m ^3, river sand 0.3 m ^3, Mizuhaihi slump 23～25Cm, they were blended at a ratio of the inorganic chloride solution 60 l of the present invention Shows the characteristics for things. The characteristic h shown in FIG. 6 is that Portland cement 800
shows kg, Sand 0.15 m ^3, ash 0.60 m ^3, Mizuhaihi slump 23～25Cm, the characteristics for those in proportions of inorganic chloride solution 60 l of the present invention.

The characteristic i shown in the figure, Portland cement 800 kg, Sand 0.30 m ^3, ash 0.45 m ^3, Mizuhaihi slump 23～25Cm, those in proportions of inorganic chloride solution 60 l of the present invention To show the characteristics. The characteristic i shown in the figure is that Portland cement 800
shows kg, Sand 0.45 m ^3, ash 0.30 m ^3, Mizuhaihi slump 23～25Cm, the characteristics for those in proportions of inorganic chloride solution 60 l of the present invention.

The characteristic k shown in the figure, Portland cement 1250 kg, Sand 0.30 m ^3, ash 0.45 m ^3,
The characteristics are shown for a slump having a water-ash ratio of 23 to 25 cm and an inorganic chloride aqueous solution of the present invention mixed at a ratio of 60 liters. The characteristic m shown in the figure is that Portland cement 125
Shows 0 kg, Sand 0.45 m ^3, ash 0.30 m ^3, Mizuhaihi slump 23～25Cm, the characteristics for those in proportions of inorganic chloride solution 60 l of the present invention.

The characteristic n shown in FIG. 7, the proportion of portland cement suitable amount, sea sand 0.45 m ^3, ash 0.30 m ^3, Cement (sludge) 800 kg, an inorganic chloride solution the required amount of the present invention (for example, 60 liters) The characteristics are shown for those blended in. Characteristic p shown in the figure, Portland cement suitable amount, sea sand 0.30 m ^3, ash 0.45 m ^3, were formulated at a ratio of Cement (sludge) 800 kg, an inorganic chloride solution the required amount of the present invention (for example, 60 liters) Shows the characteristics for things.

As shown by the characteristic curves of the compressive strength test results in each of the above figures, the use of the inorganic chloride aqueous solution of the present invention as an inorganic soil hardening agent has the following excellent effects. That is, it shows a completely different state from the result of hardening the conventional Portland cement. In other words, it becomes a modifier capable of mixing organic and inorganic substances, which changes and improves into a crystal body which does not accompany water, which transcends the hydration reaction stage.

Further, since aggregates are not selected, not only sand (including sea sand) and gravel but also volcanic ash, incinerated ash, sludge, clay, shirasu, black soil, sludge, and other industrial waste can be directly used as on-site soil. Can be solidified. Further, since it becomes possible to solidify the harmful substances, it is possible to prevent secondary pollution, thereby removing foul odors and obtaining a deodorizing action.

When applied to road construction,
Since there is no need for roadbed materials such as gravel and crushed stone as in the past,
It is possible to simplify the construction. In addition, even with a high flow rate (slump) that cannot be expected with conventional cement and concrete, sufficiently high strength can be obtained, so that versatility can be expanded.

In summary, according to the present invention, since the above-mentioned inorganic chlorides are mixed to form the inorganic chloride aqueous solution, this inorganic chloride aqueous solution is used together with Portland cement to treat the object to be treated and the water content. When the mixture is stirred, simultaneously with the hydration reaction of Portland cement, needle-like crystals due to anion bond are generated, and the reaction to change the crystal to a crystal without water exceeding mere hydration is performed. A bondable modifier is obtained.

Therefore, it has excellent chemical resistance, heat resistance, water permeation resistance, weather resistance, durability, etc., which exceeds the hardening effect of the hydration reaction of the hardening cement, and maintains the hardening property for a long time. There is an effect that can be. Moreover, it is easy to carry out without selecting and using aggregates such as sand and gravel required for conventional concrete, and it is possible to use the soil at the site as it is for solidification and to use ordinary Portland cement. It can also cure and solidify sludge, sludge, incinerated ash, volcanic ash, industrial waste, coal ash that cannot be hardened with, as an inorganic soil hardening agent for all soils, waste treatment agent, cement modifier It has a very useful effect.

In addition, the above-mentioned inorganic chloride aqueous solution is used in combination with a small amount of cement to solidify the object to be treated and cured (sludge, sludge, incinerated ash, volcanic ash, waste, coal ash, etc.) and to stabilize it for a long period of time. Since it is masked and not re-eluted, it is possible to reuse this solidified product as a secondary processed product while satisfying all the conditions that exist in nature such as strength, weather resistance and chemical resistance. It can contribute to pollution prevention and resource saving while protecting the environment.

Further, since the composition ratio of the inorganic chlorides constituting the above-mentioned inorganic chloride aqueous solution is each set to a predetermined weight percentage, there is an effect that the deodorizing action (neutralizing action) can be secured at pH = 7. .

Aged vinyl vinyl for vinyl greenhouses (mainly PVC) is crushed and washed, and then formed into fluff or pellets. This PVC is mixed with 10 to 21% far-infrared ray element and inorganic chloride aqueous solution. Knead,
When a snow melting sheet is formed, it can be recycled and utilized effectively as a sheet having a far infrared ray heat retaining effect and a radioactivity effect, even for agricultural waste vinyl such as PVC, which is originally difficult to process.

[Brief description of drawings]

FIG. 1 is a characteristic diagram showing the results of a compressive strength test by compounding sea sand when a cement construction method is carried out using the inorganic chloride aqueous solution of the present invention.

FIG. 2 is a characteristic diagram showing the results of a compressive strength test with the same river sand mixture.

FIG. 3 is a characteristic diagram showing the results of a compressive strength test using the same river sand mixture.

FIG. 4 is a characteristic diagram showing the results of a compressive strength test for solidification of incinerated ash.

FIG. 5 is a characteristic diagram showing the results of compressive strength test for solidification of coal ash.

FIG. 6 is a characteristic diagram showing the results of a compressive strength test for solidification of volcanic ash.

FIG. 7 is a characteristic diagram showing the results of a compressive strength test on solidification of water mud.

Continuation of front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location // C09K 103: 00 B09B 3/00 301R

Claims (2)

[Claims] 1. An inorganic chloride aqueous solution in which sodium chloride, potassium chloride, lithium chloride, barium chloride, potassium bromide, nickel chloride, calcium chloride, magnesium chloride, manganese chloride, strontium chloride and rubidium chloride are mixed in a predetermined ratio. 2. The above predetermined ratio is sodium chloride 8.33.
wt%, potassium chloride 12.53 wt%, lithium chloride 0.
16 wt%, barium chloride 1.20 wt%, potassium bromide 0.60 wt%, nickel chloride 1 wt%, calcium chloride 0.80 wt%, magnesium chloride 0.80 wt%, manganese chloride 0.60 wt%, strontium chloride 0.40 wt
%, Rubidium chloride 0.16 wt%, the inorganic chloride aqueous solution according to claim 1.