KR20050103071A - Water processing material of impregnation microorganism - Google Patents

Abstract

The present invention relates to a microorganism-supported water treatment agent, 5 to 50wt.% Of oyster shell powder, ocher, montmorillonite, bentonite, which was pulverized to have a particle size of 50 to 10000mesh by baking and drying at a temperature of 50 to 1350 ℃ At least one porous natural inorganic powder selected from the group consisting of elite, elvan, and zeolite is calcined and dried at a temperature of 50 to 1350 ° C. to have a particle size of 50 to 10000 mesh, and 35 to 95 wt.% Of porous natural inorganic powder, charcoal or Activated carbon is pulverized to have a particle size of 50-10000mesh, water 1 to 32wt.% Of carbon compound powder and 0 to 13wt.% Of at least one polymer material powder selected from the group consisting of chitosan, cellulose, polyvinyl alcohol and polyethylene oxide And solidified through hydration reaction to form a viscous liquid phase, and then supported by microorganisms in granulated powder prepared by spray drying Since the components of the microbial carrier are recycled or used natural materials, they are not toxic at all, and the granular powder-type adsorbents carrying the prepared microorganisms have a certain strength and specific gravity due to the hydration reaction during manufacture. In addition, it is not only easy to apply to waste water treatment plant, but also does not generate colloidal particles in the form of swelling in water, so it does not affect turbidity and has no influence on turbidity. There is an advantage that can be adjusted. In addition, since the adsorbent in the form of a molded body has a certain strength by hydration reaction, it does not swell even after being left in water for a long time and thus does not generate suspended solids. In addition, since they have excellent adsorption capacity, they are capable of removing most of heavy metals, colloidal suspended solids such as surfactants, and nitrogen and phosphorus compounds, and they can be manufactured in various forms, thereby increasing their applicability.

Description

Water processing material of impregnation microorganism

The present invention relates to a water treatment agent loaded with microorganisms, and more particularly, to pulverize the oyster shell at a high temperature and then pulverize and activate it, and to prepare or form a granular powder having a certain strength and specific gravity by adding natural inorganic matter and a certain amount of water thereto. The oyster shell powder, activated by supporting microorganisms in the molded body, has a function as an inorganic solidifier as well as porosity and molecular surface charge. The present invention relates to a water treatment agent loaded with microorganisms capable of simultaneously performing a function as an adsorbent.

In general, various sewage or factory wastewaters are introduced into rivers, lakes, and seas, causing serious water pollution. Therefore, in order to maintain natural purification capability, the pollutants must be removed and discharged to some extent before discharge. By properly removing contaminants, it is easy to use as drinking water and can maintain a natural ecological environment.

However, despite various forms of water treatment, various algae are generated by eutrophication in existing rivers and lakes, and red tide occurs every year in the southern sea where the water temperature is high in summer. This is an urgent need for a new water treatment model because there are many problems in efficiency and economic efficiency of existing water treatment technologies and methods.

Various types of water treatment methods for removing contaminants have been developed at present, but in terms of economics and efficiency, most of them are used to adsorb and remove contaminants. In the water treatment method using such an adsorbent, porous zeolite or bentonite is used as the adsorbent for waste water treatment or ocher is mainly used.

However, such an adsorbent is used in the form of a powder, and the adsorption rate of the material itself is slow, and the amount of adsorption per unit volume is rather small. Then, when the excessive use of the adsorbent particles are suspended in the colloidal form to increase the turbidity, thereby reducing the transmittance of light and the supply of dissolved oxygen in the water there is a problem that secondary pollution occurs.

Recently, shells discarded by using environmental friendliness and excellent adsorption performance have been used as adsorbents. However, in the case of using only these shells, especially oyster shells as an adsorbent, the adsorption rate is high, but after the adsorption of contaminants and the like, the sedimentation rate is low, causing floating for a long time to cause the secondary problem as described above.

Above all, the adsorbent is used as a powder to perform the water treatment only on the surface of the water, it is impossible to remove the contaminants present in a certain depth in the water. Therefore, there is a problem that can not properly handle the contaminants existing in the water as well as the surface of the fundamental.

Accordingly, the present invention was devised to solve the above problems, and is an improvement of the prior patent application No. 2001-7432 filed by the present applicant, and each component such as active oyster shell powder, natural inorganic matter, activated carbon, and natural polymer. The mixture is mixed with water to make a viscous liquid phase, and the granulation powder having a proper strength is produced by the hydration reaction by spray drying, or each component is mixed with water to make a viscous liquid phase, using a molding mold, such as natural stone. It is an object of the present invention to prepare a molded article having various shapes and moderate strength and specific gravity, and to provide a microorganism-supported water treatment agent formed by supporting microorganisms in the granulated powder or the molded article thus prepared.

5 to 50wt.% Of oyster shell powder, ocher, montmorillonite, bentonite, which was pulverized to have a particle size of 50 to 10000mesh by firing and drying at a temperature of 50 to 1350 ° C. At least one porous natural inorganic powder selected from the group consisting of elite, elvan, and zeolite is calcined and dried at a temperature of 50 to 1350 ° C. to have a particle size of 50 to 10000 mesh, and 35 to 95 wt.% Of porous natural inorganic powder, charcoal or 1 to 32wt.% Of carbon compound powder obtained by pulverizing activated carbon to have a particle size of 50-10000mesh and 0 to 13wt.% Of at least one polymer material powder selected from the group consisting of chitosan, cellulose, polyvinyl alcohol and polyethylene oxide, The mixture is mixed with water to solidify through a hydration reaction to form a viscous liquid phase, and microorganisms are added to the granulated powder prepared by spray drying. It characterized in that the paper produced.

In addition, the present invention is characterized by producing a viscous liquid phase by mixing with the water through the hydration reaction to produce a viscous liquid phase, by supporting the microorganisms in a natural stone formed by projections and aeration on the surface.

In addition, the present invention is prepared by mixing with water to solidify through a hydration reaction to form a viscous liquid phase, and then formed into at least one molding frame consisting of a cylinder, a square column, a hexagonal column, an octagonal column to support the microorganisms in a dry molded body The molded body is a polygonal body characterized in that the inner space is formed with a plurality of through holes formed from the inside to the outside.

Hereinafter, a detailed description of the water treatment agent loaded with other microorganisms in the present invention will be described with reference to the accompanying drawings.

First, in order to prepare the shell powder among the raw materials of the water treatment agent according to the present invention, the washed shell, preferably the oyster shell, is washed with water and then dried or dried calcined or calcined and pulverized at a temperature range of 50 to 1350 ° C. A powder having a range of about 1000 mesh is prepared. The prepared oyster shell powder is porous and the specific surface area is quite large, the chemical composition is as shown in Table 1 below. Oyster shell powder has a strong alkalinity, has a high specific surface area and an excellent adsorption capacity, and has a function as an inorganic hardener.

TABLE 1

<Oyster Shell Powder and Chemical Composition (wt.%) Fired at 1200 ° C>

Furtherance CaO MgO K2O SiO2 Other Ignition loss content 50.5 0.55 0.05 0.4 1.6 46.9

As shown in the table, the ignition loss amounts to 46.9%.

When the calcium carbonate (CaCO3), which is a major component of the shell, is changed to quicklime (CaO) by plastic working, carbon dioxide (CO2) is evaporated and modified to be more porous, and also a large number of charges are distributed.

Therefore, the adsorption performance can be improved by the charge distribution of the porous structure and the molecular surface.

In addition, the quicklime component has a function as an inorganic hardener because it reacts with water.

Therefore, even when sprinkled in powder form, it becomes swelled and does not exist in a colloidal state, thereby preventing secondary pollution due to an increase in turbidity, and solidifying by hydration reaction as water is added in a mixed state with other ingredients. It is possible to manufacture a molded article having a certain shape, that is, an adsorbent which is a chip or ball-type water treatment agent, as well as to control the specific gravity of the granular powder.

Second, natural minerals used as the main raw materials are mainly selected from secondary clays such as ocher and montmorillonite or bentonite or illite or elvan or zeolite such as raw materials or raw materials and dried or calcined at a temperature range of 50 to 1350 ° C. Grinding to prepare a powder having a range of about 50 ~ 1000mesh.

The natural inorganic powders prepared as described above also have excellent adsorption capacity due to the high specific surface area as the porous material, exhibit alkalinity, and have a large amount of oxygen on the surface of the natural inorganic molecules, thus exhibiting a function as an adsorbent, which is mainly a water treatment agent.

TABLE 2

<Chemical composition of natural mineral powder calcined at 1200 ℃ (100%, wt.%)>

     Composition ocher SiO2 Al2O3 Fe2O3 / FeO CaO MgO K2O Etc Ig.Loss Ocher 56.9 27.3 7.6 1.3 0.8 - 0.8 5.3 Illite 54.3 29.9 3.5 0.2 0.2 4.6 1.6 5.7 Bentonite 60.6 23.2 2.6 1.7 3.2 0.3 1.5 6.9 Elvan 61 19.3 5.8 4.3 1.6 2.5 3.1 2.4

Third, charcoal or activated carbon having excellent adsorption capacity is dried and pulverized at a temperature range of 50 to 2000 ° C., and then a powder having a particle range of about 50 to 2000 mesh is prepared.

The powder produced in this way has a very large specific surface area and thus shows very good adsorption capacity.

Since the adsorption capacity of such charcoal and activated carbon is known from the examples, detailed description thereof will be omitted.

However, since the cost is too high when using charcoal or activated carbon alone, highly activated carbon treatment is used in a special field in a water purification plant, but in the present invention, since it forms a granular powder or a shaped body, it is easily recovered and reused so that it can be mixed and used. Done.

Fourth, a natural polymer such as chitosan may be added as an organic hardener and an adsorbent, and when added, a viscous water-soluble liquid may be prepared by dissolving chitosan polymer in a weakly acidic aqueous solution.

Each powder thus prepared is mixed in an appropriate proportion to package the mixed powder, or water is added to the mixed powder, or the chitosan viscous liquid and water are added together, followed by spray drying the mixed viscous liquid to obtain a hydration reaction. After preparing a solid granular powder having a particle range of ˜200 mesh or by adding it to a mixed powder or by adding chitosan and water together, preparing a mixed viscous liquid phase, putting it in a mold and drying it, The molded article which solidified can be manufactured.

The microorganism-supported water treatment agent can be obtained by supporting microorganisms of various uses with respect to the granular powder or the molded product prepared as described above.

Therefore, by preparing a granulated powder having an appropriate specific gravity according to the concentration and condition of the pollutant, it is possible to treat the pollutant more efficiently by adjusting the precipitation time.

In addition, by molding and drying in various forms in a viscous liquid state, it is possible to manufacture a molded body of various forms, it is possible to manufacture a water treatment agent of a new performance that can not be conventionally exhibited.

1 is an exemplary view showing the shape of a microorganism-supported water treatment agent according to the present invention, Figure 2 is an exemplary view showing another shape of the microorganism-supported water treatment agent.

As shown in FIG. 1, reference numeral 10 denotes an external shape of a water treatment agent of a polygonal body, and a plurality of through-holes 11 are formed from the outside to the inside of the polygonal body through which the center is penetrated.

Reference numeral 20 is another shape of the water treatment agent, and is formed of a natural stone body such as granite having projections and aeration formed on a surface thereof.

Therefore, it is possible to adsorb and remove pollutants such as nitrogen and phosphorous compounds by replacing them with cement concrete of submerged beams installed in tributaries of rivers or rivers, or by forming them in the form of natural stones distributed in rivers and valleys.

In this case, since it is a molded product rather than a separate powder form, it can be used semi-permanently because it can be collected and decomposed and reused after a certain time.

As described above, according to the present invention, each component is almost non-toxic because it consists mostly of natural substances, and the water treatment agent, which is an adsorbent in the form of a granulated powder, has a certain strength and specific gravity due to a hydration reaction during manufacture. It is not only easy to apply to water, lake, sea, and wastewater treatment plant, but also does not generate colloidal particles in the form of swelling in water. There is an effect that can be adjusted freely floating time.

In addition, since the water treatment agent, which is an adsorbent in the form of a molded body, has a certain strength by hydration reaction, it does not swell even after being left in water for a long time, and thus does not generate suspended solids. It can remove most of colloidal suspended solids, nitrogen and phosphorus compounds, and can be manufactured in various forms, so there are other effects with very high applicability, and greatly increase the treatment efficiency and shelf life, which are disadvantages of various water treatment agents. You can.

While the invention has been shown and described with reference to certain preferred embodiments, the invention is not limited to the embodiments described above and does not depart from the spirit of the invention and has ordinary skill in the art to which the invention pertains. Various changes and modifications may be made by the user.

1 is an exemplary view showing the shape of a microorganism-supported water treatment agent according to the present invention,

Figure 2 is an exemplary view showing another shape of the microorganism-supported water treatment agent according to the present invention.

Explanation of symbols on main parts of drawing

             10; Polygonal body 11; Through hole

             20; Natural stone

Claims (4)

Oyster shell powder 5-50wt.% At least one porous natural inorganic material selected from the group consisting of ocher, montmorillonite, bentonite, elite, elvan, and zeolite is calcined and dried at a temperature of 50 to 1350 ° C. to have a particle size of 50 to 10000 mesh. 95 wt.%, 1 to 32 wt.% Of carbon compound powder obtained by pulverizing char or activated carbon to have a particle size of 50 to 10,000 mesh and 0-13 wt.% Of at least one polymer powder selected from the group consisting of chitosan, cellulose, polyvinyl alcohol and polyethylene oxide, After mixing with water to solidify through a hydration reaction to make a viscous liquid phase, the microorganism-supported water treatment agent characterized in that the manufacturing by supporting the microorganisms in the granulated powder prepared by spray drying. The method of claim 1, After mixing with the water to solidify through a hydration reaction to form a viscous liquid phase, the microorganism-supported water treatment agent characterized in that the preparation by supporting the microorganisms on the natural stone body 20 formed by projections and aeration on the surface. The method of claim 1, After mixing with the water to solidify through a hydration reaction to form a viscous liquid phase, it is formed into at least one molding frame consisting of a cylinder, a square column, a hexagonal column, an octagonal column to support the microorganisms in a dry molded body characterized in that the manufacturing Water treatment agent loaded with microorganisms. The method of claim 3, wherein The molded body is a polygonal body 10 has an internal space and a plurality of through-holes (11) formed from the inside to the outside is a water treatment agent characterized in that the microorganism is carried.