KR20150101567A - Floating foamed polymer composition for water purification and Manufacturing method thereof - Google Patents

Abstract

The present invention relates to a floating foam polymer composition for purifying water and manufacturing method thereof. Especially, the composition includes: a floating support; and a photocatalyst, and an inorganic absorption filtering material coupled to a surface or the inside of the support by a polyol. Basically, by floating on a surface of water polluted by the floating support, not only the solar light absorption rate of the photocatalyst can be increased, but also the water purifying effect can be maximized by inorganic material absorption due to the absorption filtering material by the photocatalyst. While the photocatalyst and inorganic absorption filtering material can be simply coupled, and the safety in water can be more enhanced due to the excellent bonding force.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a floating foam polymer composition for water purification and a method of manufacturing the foam polymer composition,

The present invention relates to a particulate foamable polymer composition that can be floated on water, more specifically to a particle used for water purification, and more particularly to a particulate foamable polymer composition capable of easily bonding a photocatalyst and an inorganic adsorbent on a surface thereof, And a method for producing the same. BACKGROUND OF THE INVENTION 1. Field of the Invention

Organic pollutants such as phenol and toluene, which are water pollutants, are considered to be serious in terms of their emissions.

However, the conventional water treatment technology has a problem that a treatment condition such as an appropriate temperature is very limited in order to remove harmful organic matter to a few ppb level, and a secondary pollutant is generated after the water treatment to require a post-treatment process.

Therefore, since the late 1980s, advanced countries have been actively studying oxidation reactions using photocatalysts and oxidants, which are high-level oxidation technologies. Here, the term 'advanced oxidation treatment technique' refers to a more advanced treatment technique of oxidizing a pollutant organic substance by generating a hydroxy radical (.OH) as an intermediate material. The main advantage of such a photocatalytic oxidation reaction is that sufficient organic contaminant treatment effect can be obtained even if only oxygen is supplied without adding an oxidizing agent such as hydrogen peroxide and ozone, When hydrogen peroxide is administered, the oxidizing power and the sterilizing effect are further increased.

'Photocatalyst' is a substance that absorbs the light of the required wavelength band to help the chemical reaction occur. Such a photocatalyst completely oxidizes toxic substances with carbon dioxide and water using oxygen or water as an oxidizing agent under light irradiation. This is relatively inexpensive compared to other processes, and not only is it possible to obtain a chemically useful material with a renewable energy source, but also as a new method that can be applied to the oxidative decomposition reaction of a decomposable organic material. This photocatalytic reaction process converts various inorganic compounds into less dangerous substances, facilitating disposal and regeneration, and also completely decomposing toxic organic compounds.

The origin of the photocatalytic reaction begins with the finding that in 1839 Becquerel drew the silver chloride (AgCl) electrode into the electrolyte solution and connected it with the counter electrode to generate voltage and current. However, since 1955, Brattin and Garrett explained this phenomenon, and since then organic decomposition reactions using semiconductors such as zinc oxide as photocatalysts have been reported, but the breakthrough has been made in Fujishima and Honda's research in 1972 It was the result. There are a variety of semiconductor materials used in the oxidation and reduction reactions, but in reality there are very few semiconductor materials that can be used in the photocatalytic reaction, and they also have to satisfy the following requirements: First, they are optically active and stable Should be. Second, it must be biologically and chemically inactive, and should not only be able to use visible light or ultraviolet light, but also economically. According to general results, the activity of the oxide semiconductor for the photocatalytic reaction is known in the order of titanium oxide> zinc oxide> zirconium oxide> tin oxide> vanadium oxide.

Various methods have been proposed as methods for immobilizing oxides which exhibit activity in the photocatalytic reaction. Most of the oxides are mainly used in the form of powder, and recovery of these particles and blocking of light by particles have been pointed out as problems. Therefore, there is a need for a method for effectively immobilizing the photocatalyst without deteriorating the efficiency of the photocatalyst. The most common method for immobilizing an oxide semiconductor is a method of coating a solid support. BACKGROUND ART A technique for immobilizing titanium oxide or the like on a heat resistant material such as glass, metal, or ceramics has been known for a long time, and has been put into practical use as glass or tile. Examples of the precursors used herein include titanium alkoxide, titanium chelate, titanium oxide, titanyl nitrate, titanyl sulfate, and titanium tetrachloride. Typical coating methods include deposition coating, screen printing, spin coating, They are known to vary greatly in photocatalytic activity depending on the materials and ranges used.

In recent years, water treatment methods using various photocatalysts have been proposed, but most of them are applied in plant facilities and rarely used directly in the field. In particular, the water treatment process in plant facilities has difficulties in site creation and has a disadvantage in that the ability to cope immediately on site is inferior.

Recently, eutrophication phenomenon, which is high in nutrients and large amount of algae, is continuously occurring in stagnant waters of domestic rivers and lakes, but there is no method for direct water purification to solve this problem. Eutrophication is known to increase the amount of nutrients such as nitrogen and phosphorus in water due to the inflow of domestic sewage, industrial wastewater, manure, and fertilizer. It is necessary to focus on eutrophication as the bird grows by absorbing it.

However, in the water treatment technique using the conventional photocatalyst, since the photocatalyst is not located on the surface of the water but floats in the water, the sunlight can not be efficiently used, and the ability to adsorb an inorganic material is poor, There is a problem that it is difficult to expect the effect of constant water purification because it is easily decomposed in water or the photocatalytic coating is separated.

The object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to maximize the effect of purifying organic matter and adsorption of inorganic matter by not only increasing the solar light absorption rate of the photocatalyst by floating on the surface of contaminated water.

Further, the present invention is to provide a water-purifying particle and / or flocculant which can easily bind a photocatalyst and an inorganic adsorbent on a surface of a floating support, and is also excellent in bonding strength, thereby further improving stability in water.

According to an aspect of the present invention, And a photocatalyst and an inorganic adsorption filter medium bonded to the surface or inside of the support.

Here, it is preferable that the photocatalyst and the inorganic material adsorbing material are bonded to the surface and inside of the support.

The photocatalyst and the adsorbent for adsorbing an inorganic substance may be bonded to the surface or inside of the support via a polyol.

The polyol may be at least one selected from the group consisting of glycerin, propylene glycol, diethylene glycol, and dipropylene glycol.

Also, the floating support is at least one selected from the group consisting of EPS (Expandable Polystyrene) and EPP (Expandable Polypropylene), and the photocatalyst includes titanium dioxide (TiO ₂ ), and the inorganic adsorption filter material is lanthanum ion La ^{3 +} ), iron hydroxide (Fe ₂ O ₃ ), and calcium carbonate (CaCO ₃ ).

On the other hand, another embodiment of the present invention is a microfluidic device comprising: a floating support; And a photocatalyst and an inorganic adsorption filter medium bonded to the surface or inside of the support by a polyol.

According to yet another embodiment of the present invention, there is provided a method for producing a polyol, comprising the steps of: adding a photocatalyst and an inorganic adsorbent to a liquid polyol; Supporting a floating support on the mixed solution; And a step of firing a mixed solution having the floating support supported thereon.

Here, the firing may include cooling the mixed solution carrying the floating support; And removing the floating support from the cooled mixed solution and washing the floating support.

Further, the present invention provides a method for producing a polyol, which comprises: mixing 3 to 4 parts by weight of a photocatalyst and 2 to 3 parts by weight of an inorganic adsorbing material with respect to 1 part by weight of a liquid polyol; Heating the mixed solution to a temperature within a range of 100 to 150 ° C, and carrying the floating support for 10 seconds to 30 seconds; And a step of removing the polyol by washing the loaded floating support with water in the range of 1 to 10 ° C, followed by washing.

In addition, the present invention relates to the above-described float for water purification; And a fixing means for fixing the float for purification of water quality.

The details of other embodiments are included in the detailed description and drawings.

The present invention relates to a lubricant composition comprising a floating support; And a photocatalyst and an inorganic adsorption filter medium bonded to the surface or inside of the support by a polyol. In general, the photocatalyst is floated on the water surface contaminated by the floating support, In addition, the effect of purifying organic matters by the photocatalyst and the adsorption of inorganic substances by the adsorption filter material can maximize the effect of purifying the water.

In addition, the present invention can easily bind a photocatalyst and an inorganic adsorbent on a surface of a floating support by the polyol, but also can improve stability in water because of its excellent bonding strength.

Further, by using the particles or flocculent according to the present invention, it is possible to quickly cope with eutrophication occurring in the stagnant water, to efficiently purify the water, and to be applied directly on site, effective.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing the constitution of a water-based foamable polymer for water purification according to a preferred embodiment of the present invention,
FIG. 2 is a flowchart illustrating a method of manufacturing a foamable polymer composition for water purification according to another preferred embodiment of the present invention,
FIG. 3 is a detailed flowchart showing an example of each process according to the manufacturing method of FIG. 2,
FIGS. 4 to 9 are photographs for explaining respective processes of FIG. 3,
10 is a photograph showing an example of a floating particle for water purification produced by the manufacturing method according to the present invention,
FIG. 11 is a perspective view showing an example of a water quality purification apparatus including suspended particles for water purification according to the present invention,
12 is a perspective view showing an example of a water quality purification apparatus including a float for water purification according to the present invention,
FIG. 13 is a state diagram for explaining an example of the effect of the floating particles and / or float for water purification according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

1 is a schematic view showing the structure of a water-based foamable polymer for water purification according to a preferred embodiment of the present invention.

The present invention is not particularly limited as far as contaminated water is used for purifying polluted water, and preferably it can be a water purifying agent or a purified particle used for purifying water quality in a stationary water area such as a sea, a river, or a lake .

To this end, the water-repellent foam polymer composition for water purification according to the present invention may be a particle as shown in FIG. 1 or a composition containing the same. That is, the water-borne foam polymer composition for water purification according to the present invention comprises a floating support (1); And a photocatalyst (2) and an inorganic adsorption filter medium (3) bonded to the surface or inside of the support (1). That is, the present inventors used a floating support (1) to maximize utilization and maximization of sunlight, which is a natural energy, and oxidized or decomposed organic matter (algae, etc.) in the water by using the photocatalyst (2) (EN) A foamable polymer composition for on - site water purification, which is combined with a surface and / or inside of a support (1) together with an adsorption filter medium (3) for adsorbing an inorganic substance such as phosphorus (P) Or particles.

The floating support 1 serves as a base of the floating foam polymer for water purification according to the present invention and has a certain shape so as to support the photocatalyst 2 and the inorganic adsorption filter medium 3. Particularly, in the present invention, it is preferable that the floating support (1) floats on the surface of the water, and for this purpose, it is more preferable that it has foamability or a foam. In order to absorb the sunlight as much as the photocatalyst 2 is located on the water surface, it is preferable to use a polymer particle bead having a low specific gravity. In addition, since the photocatalytic activity of the photocatalyst 2 is affected by the entire surface area of the photocatalyst 2, it is preferable to use a polymer particle bead having a high specific surface area in order to remove high-efficiency water pollutants. As the polymer bead particles, polypropylene, polystyrene, polyether, or the like can be used. In order to uniformly and efficiently coat the photocatalyst thin film, EPS (Expandable Polystyrene) or / and EPP (Expandable Polypropylene) is preferably used. EPS and / or EPP are superior to conventional materials in breaking, buffering ability, flexibility and chemical resistance, contributing to improvement of stability and miniaturization of various products in the market, and they are floating in water for a long time with low specific gravity . In the case of rivers and lakes, the water area is wide and the shade is small. Therefore, the present invention uses the point where the sunlight directly affects the water surface, and the photocatalytic reaction can be maximized in the field through the above- have.

The photocatalyst 2 has a function of removing organic contaminants by receiving light. The photocatalyst 2 contains all organic or inorganic substances having a decomposing activity by light. When the metal oxide is used, the photocatalyst 2 increases light activity, antibacterial activity, . The photocatalyst 2 has a function of removing organic matter contained in water by reacting with natural light near the water surface. As a precursor for the photocatalyst 2, TiO ₂ (titanium dioxide) and titanium dioxide are excellent in efficiency, and when considering the visible light side, nitrogen-doped TiO ₂ can also be utilized.

The above-mentioned inorganic adsorbent material (3) includes all materials for adsorbing and removing an inorganic substance (for example, PO ₄ ^-3 ) contained in water. As described above, phosphorus (P) often acts as a limiting nutrient for algae growth. The present invention further includes an inorganic adsorption filter material (3) in a floating bead having a photocatalyst, It has the effect of removing the causative minerals together. The inorganic substance adsorbing filter material (3) is lanthanum ion (La ^{3 +),} iron hydroxide (Fe ₂ O ₃₎ and can be obtained by including at least one selected from the group consisting of calcium carbonate (CaCO _3), these inorganic adsorption media (3) basically has its own inorganic adsorption elimination effect, and is capable of further increasing the photoactive characteristics of the photocatalyst (2) by oxidizing ions.

The present invention basically floats on the surface of the water contaminated by the floating support (1), thereby not only increasing the solar absorption rate of the photocatalyst (2) but also enhancing the decomposition of organic matter by the photocatalyst It is possible to maximize the effect of purifying the water by the adsorption of the inorganic substances by the inorganic adsorbent material (3).

Here, the photocatalyst 2 and / or the inorganic adsorbent material 3 are preferably contained on the outer surface and / or the inside of the floating support 1. In the case where the photocatalyst 2 and / or the inorganic adsorption filter medium 3 are provided on the outer surface of the floating support 1, the reactivity of the photocatalyst 2 and / or the inorganic adsorption filter medium 3 can be greatly increased. In addition, when the photocatalyst 2 and / or the inorganic adsorbent material 3 are included in the inside of the floating support 1, the bonding force of the photocatalyst 2 and / or the inorganic adsorbent material 3 is increased, thereby increasing durability and service life.

The foamable polymer composition for water purification according to the present invention may include floating particles for water purification as shown in FIG. 1. The shape of such particles is not particularly limited, and may be circular beads, spherical or polygonal , Ellipse, angle, etc.). Particularly, it is preferable that the floating particle for water purification according to the present invention has a ball shape by adsorbing the photocatalyst 2 and the inorganic adsorbing filter medium 3 on the floating support 1, This is because stability in water can be further increased. The size of such a particle is not particularly limited, but if it has a diameter within a range of about 2 mm to 200 mm, it can penetrate into the contaminant, or the area of reaction with the contaminant is wide, thereby maximizing the purification efficiency.

Another feature of the present invention is that the photocatalyst 2 and the inorganic adsorbent material 3 are bonded to the surface and / or inside of the support 1 via the polyol 4, Lt; / RTI > That is, the photocatalyst 2 and the inorganic adsorbent material 3 may be thermally bonded to the surface and / or the interior of the support 1. To this end, the polyol 4 is bonded to the entire surface of the support 1, Or a portion thereof. In other words, the polyol 4 can be used only for the purpose of bonding the photocatalyst 2 and the inorganic adsorbent material 3 to the support 1, and the photocatalyst 2 and the inorganic material adsorption material 3 are supported on the support 1 1) and then removed by washing.

The polyol (4) has a function of binding the photocatalyst (2) and the inorganic adsorption filter medium (3) to the floating support (1). In the present specification, the polyol (4) collectively refers to a polymer compound having a hydroxyl group (hydroxyl group). Among them, a polyhydric alcohol, that is, an aliphatic compound having two or more aliphatic hydroxyl groups Glycols or diols and also ethylene glycol or propylene glycol or diethylene glycol, dipropylene glycol, polyethylene obtained by etherifying them, Glycol, and the like. Preferably, glycerin having three hydroxyl groups or pentaerythritol having four hydroxyl groups is also usable. The present invention can bind the photocatalyst 2 and / or the inorganic adsorption filter medium 3 to the floating support 1 by including the polyol 4 having at least one hydroxyl group (-OH).

The present invention can easily and easily combine the photocatalyst 2 and the inorganic adsorbing material 3 with the support 1 through the polyol 4 without any additional crosslinking agent or binder and the larger amount of the photocatalyst 2 ) And the inorganic adsorbent material (3) can be firmly bonded to each other, and it is possible to remarkably improve the stability and life of the particles in water.

The present invention can be a composition comprising a floating support (1), a polyol (4), a photocatalyst (2) and an inorganic adsorption filter medium (3), wherein the polyol (4) (3) is coupled to the floating support (1). The present invention has an excellent stability in water due to the strengthening of the binding force by the polyol (4).

On the other hand, another embodiment of the present invention is a microfluidic device comprising a floating support (1); And a photocatalyst (2) and an inorganic adsorption filter medium (3) bonded to the surface and / or the interior of the support (1) by a polyol (4).

The above-mentioned floating support (1), photocatalyst (2), inorganic adsorption filter medium (3) and polyol (4) are as described above. However, the present invention is not limited to the above-described water purification particles, but may be floating structures or floating structures having various sizes and / or shapes floating in water. That is, the present invention is characterized by comprising a floating support (1), a photocatalyst (2) and an inorganic adsorption filter medium (3) (which may further include a polyol (4) It is also possible to have any form that can be. For example, it may be a large buoyancy body, a frame or an angle installed in water.

By using the float for water purification according to the present invention, it is possible to quickly cope with eutrophication occurring in stagnant water, to efficiently purify water, and to avoid the disadvantage of water treatment using existing photocatalyst, It is also effective in water quality accidents and sustainable natural environment maintenance. The present invention is a field-applied technology that utilizes the photocatalytic reaction in a natural state. In order to utilize the natural light to the maximum, the space above the water surface is utilized as a floating support and the bonding strength is maintained by the crosslinking material. The decomposition can be stably sustained for a long time. Accordingly, when the present invention is applied to stagnant waters of natural rivers and lakes, it can be utilized as an efficient in - site method because it has a chain action of natural light utilization, organic matter decomposition and inorganic decomposition.

FIG. 2 is a flow chart for explaining a method for manufacturing a suspension-type foam polymer composition for water purification according to another preferred embodiment of the present invention, and FIG. 3 is a detailed flowchart showing an example of each process according to the manufacturing method of FIG. FIGS. 4 to 9 are photographs for explaining each process of FIG. 3, and FIG. 10 is a photograph showing an example of sub-oil particles for water purification produced by the manufacturing method according to the present invention.

In another embodiment of the present invention shown therein, a step (S100) of adding a photocatalyst 2 and an inorganic adsorbing material 3 to a liquid polyol 4, heating and mixing the same; Supporting the floating support (1) on the mixed solution (S200); And a step (S300) of firing a mixed solution having the floating support (1) carried thereon.

In the mixing step S100, the photocatalyst 2 and the inorganic adsorption material 3 are placed in the liquid polyol 4 and heated. That is, a mixed powder or liquid phase of the photocatalyst (2) and the inorganic adsorbing material (3) is mixed with the polyol (4) to prepare a mixed composition. The liquid polyol (4) can be prepared by heating the polyol (4) having high viscosity such as honey to 40 캜 or higher to lower the viscosity (S110). This is to make the photocatalyst 2 and the inorganic adsorption filter medium 3 more thoroughly mixed with the polyol 4. Thereafter, the photocatalyst 2 and the inorganic adsorbent material 3 are placed in the prepared liquid polyol 4 (S120) and heated to the polyol 4 so that the photocatalyst 2 and the inorganic material adsorbing material 3 It is preferable that they are completely mixed (S130). The heating as described above can dissolve the photocatalyst 2 and the inorganic adsorbent material 3 in the polyol 4 to be sufficiently mixed so that they can be easily and easily bonded to the floating support 1 in the process described below You can.

The amount of the polyol (4), the photocatalyst (2) and the inorganic adsorbent material (3) to be used is not particularly limited, but 3 to 4 parts by weight of the photocatalyst (2) 3 to 3: 3 or 1: 4: 2, and more preferably, the weight ratio of the polyol (4), the photocatalyst (2) Do. When the amount of the photocatalyst 2 and the amount of the inorganic adsorbent material 3 is less than the above range, the purification effect is insufficient. When the amount is larger than the above range, the amount of the support 1 and the polyol 4 is relatively small, Is difficult to manufacture or the stability is poor. However, the blending ratio of the polyol (4): the photocatalyst (2): the inorganic adsorbent material (3) can be varied depending on the kind of the object and the field conditions according to the purpose of use.

In the step S200 of carrying the floating support 1, the floating support 1 is inserted into the mixed solution. Then, the polyol 4 mixed with the photocatalyst 2 and the inorganic adsorption filter medium 3 can be applied to the surface of the floating support 1. At this time, it is preferable to heat the mixed solution to a temperature within a range of 100 to 150 ° C and to carry the floating support 1 for 10 seconds to 30 seconds (S210). In the case of heating the mixed solution, The photocatalyst 2 and the inorganic adsorptive filter medium 3 can be injected into and flowed not only into the surface of the oil-based support 1 but also into the interior of the oil-based support 1, thereby obtaining particles having excellent bonding strength and excellent durability and service life. The polyol 4 serves as a medium for binding the photocatalyst 2 and the inorganic adsorbent material 3 to the floating support 1. The polyol 4 is heated to a temperature within a range of 100 to 150 ° C It does not evaporate. Particularly, it is preferable that the heating temperature is in the range of 100 to 150 ° C and the carrying time is in the range of 10 seconds to 30 seconds. If the heating temperature is lower than the above range, the bonding force between the photocatalyst 2 and the inorganic adsorbent material 3 becomes weak, , The shape of the floating support (1) is deformed. More preferably, depending on the type of the floating support 1, the above-mentioned holding time is preferably heated to a melting point thereof or to a temperature slightly lower than the melting point (5 to 10 DEG C).

The firing step S300 is for cooling the mixed solution carrying the floating support 1 and firing it. The photocatalyst 2 and the inorganic adsorption filter medium 3 are preferably bonded to the surface of the floating support 1 and preferably the photocatalyst 2 is coated on the surface and / And the inorganic adsorbent material (3). For example, the supported floating support 1 may be taken out, put in water in the range of 1 to 10 ° C and sintered. Preferably, the step of cooling the mixed solution carrying the floating support (1), taking out the floating support from the cooled mixed solution, and washing the mixed solution is carried out. For example, it is preferable that the floating support 1 coated with the photocatalyst 2 and the inorganic adsorbing filter medium 3 is dipped in distilled water at 4 ° C for a predetermined time (S310) and rapidly cooled, It is possible to sufficiently wash the water (S320). The photocatalyst 2 and the inorganic adsorption filter medium 3 weakly bound to the polyol 4 can be separated through the cleaning process S320 and thus the photocatalyst 2 strongly bonded to the floating support 1 can be removed, And the inorganic adsorption filter medium 3 remain.

The present invention uses polyol (4) without any crosslinking agent to easily and easily combine photocatalyst (2) and inorganic adsorbing material (3) on floating substrate (1) to form floating particles and / or floating material There is an effect that can be.

FIG. 11 is a perspective view showing an example of a water quality purification apparatus including the suspended particles 10 for water purification according to the present invention, FIG. 12 is an example of a water quality purification apparatus including a float 20 for water purification according to the present invention Fig.

Another embodiment of the present invention shown here is a method for immobilizing the water-repellent subantergenic particle 10 or the float 20 for water purification, And a means for cleaning the water.

The fixing means is not particularly limited and may be a net 30 comprising the particles 10 according to the invention or a frame 40 and / or connecting means 41 for fixing the float 20 according to the invention It is also possible.

Also, the mesh 30 and / or the frame 40 may be connected to a separate center weight 31 and / or a buoyant body 42 to be provided in the water phase.

Fig. 13 is a use state diagram for explaining an example of the effect of the suspended particles (and / or float) for water purification according to the present invention.

As shown therein, another embodiment of the present invention may be a method for removing water pollutants, which comprises removing the water pollutants using the above-mentioned water repellent particles for water purification.

That is, the contaminated water source can be purified by bringing the suspended particles for water purification according to the present invention into contact with or reacting with the contaminated water source. Preferably, when the flocculent particles for water purification according to the present invention are sprayed into the contaminated water, the flocculent particles float on the water surface and purify the contaminated water source.

If a large amount of floating particles for water purification according to the present invention are applied in large quantities, a cradle may be utilized so as not to be disturbed by flowing water or sedimentation. That is, the present invention can be applied to a variety of conditions such as a direct site or a plant facility, and it can be modified in shape depending on the site conditions and the use place.

In addition, it is also possible to apply the floating particles for water purification according to the present invention to a conventional facility by coating them in a thin film form.

The present invention may be better understood by the following examples, which are for the purpose of illustrating the invention and are not intended to limit the scope of protection defined by the appended claims.

Example  1: Floating oil for water purification Bead  Produce

First, EPP (Expandable Polypropylene) as a floating support, TiO ₂ as a photocatalyst, and Fe ₂ O ₃ as an adsorbent for adsorbing an inorganic material were prepared. Then, the liquid was then heated glycerin of the glycerin gel (gel) state to more than 40 ℃: TiO ₂ : Fe ₂ O ₃ were mixed at a ratio of 1: 3: 3, and the mixture was heated to prepare a mixture of glycerin, TiO ₂ , Fe ₂ O ₃ Lt; / RTI > Then, the mixed solution was heated to 153 캜 near the melting point of EPP, and the spherical EPP powder was loaded for 20 seconds. Then, the supported EPP was taken out, immersed in distilled water at 4 ° C, and then washed.

Comparative Example  One : Polyol  Do not have Bead  Produce

The EPP, TiO ₂ and Fe ₂ O ₃ prepared in Example 1 , Kneaded with water, formed into a ball having a radius of about 20 mm, and the formed ball was subjected to a firing treatment. By cooling the fired ball at room temperature, a ball having a weight of about 25 g was obtained.

Experimental Example  1: Physical characteristics experiment

Physical properties of the balls according to Example 1 and Comparative Example 1 are shown in Table 1 below.

The instrument used for the specific surface area measurement is Micromeritics ASAP2420 and the porosity test is the instrumental analysis by mercury pressure method with Micromeritic AUTOPORE IV9500 (V1.06).

Item Example 1 Comparative Example 1 Experimental Method Moisture (wt%) 0.95 1.24 Weight analysis Specific surface area (m < 2 > / g) 1.01 1.30 Instrument analysis In volume ratio 1.46 1.06
KRL3114: 2005
Apparent specific gravity 2.03 1.87 Absorption Rate (%) 29.5 42.3 Porosity (%) 31.7 51.2 Instrument analysis

As shown in Table 1, in Example 1, the specific surface area was smaller than that of Comparative Example 1, and the water absorption rate and the porosity were low. This is because the coating strength of the polyol is high in Example 1, Is analyzed.

Experimental Example  2: Sewage purification experiment

The ball according to Example 1 and Comparative Example 1 was added in an amount of 20 g per 1 L of contaminated sewage, and the concentration of main components for determining water pollution was measured with time. The results are shown in Table 2 below.

ingredient
(mg / L) Example 1 Comparative Example 1 Early 1 hours 24 hours Early 1 hours 24 hours lead 0.10 0.07 0.01 0.11 0.06 0.06 Fluorine 2.1 1.8 0.8 2.1 1.6 1.5 Mercury 0.008 0.005 0.0002 0.008 0.003 0.002 Ammonia nitrogen 0.91 0.63 0.37 0.91 0.52 0.51 cadmium 0.019 0.010 0.004 0.019 0.009 0.008 benzene 0.011 0.009 0.005 0.011 0.007 0.006 Chlorine ion 344 322 287 345 324 318 iron 0.25 0.18 0.16 0.27 0.19 0.20 manganese 0.24 0.15 0.10 0.24 0.17 0.15

As shown in Table 2, although the effect was similar after 1 hour, it can be seen that Example 1 is more effective for reducing harmful components than Comparative Example 1 after 24 hours.

Experimental Example  3: Visual observation

The same amount of the balls according to Example 1 and Comparative Example 1 was added to the water collected from a fish farm, and after 24 hours, the effect of purifying each water was visually observed. As a result, when the ball of Example 1 was used, the effect of improving the green tide was observed, but when the ball of Comparative Example 1 was used, the effect of improving the green tide was little.

While the present invention has been particularly shown and described with reference to preferred embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be apparent to those skilled in the art that changes may be made.

1: Support
2: Photocatalyst
3: Adsorption media
4: Polyol
10: Floating particles
20: float
30: Network
31: center weight
40: frame
41: Connection means
42: buoyancy body

Claims (10)

Floating support; And
And a photocatalyst and an inorganic adsorption filter medium bonded to the surface or inside of the support.
The method according to claim 1,
Wherein the photocatalyst and the inorganic adsorbent material are bonded to the surface and inside of the support.
The method according to claim 1,
Wherein the photocatalyst and the inorganic adsorbent material are bonded to the surface or inside of the support via a polyol.
The method according to claim 1,
Wherein the polyol is at least one selected from the group consisting of glycerin, propylene glycol, diethylene glycol, and dipropylene glycol.
5. The method according to any one of claims 1 to 4,
The floating support may be at least one selected from the group consisting of Expandable Polystyrene (EPS) and Expandable Polypropylene (EPP)
The photocatalyst comprises titanium dioxide (TiO ₂ )
The inorganic substance adsorbing filter material is lanthanum ion (La ^{+ 3),} iron hydroxide (Fe ₂ O ₃₎ and water purification suspended foamed polymer composition, wherein at least one selected from the group consisting of calcium carbonate (CaCO _3).
Floating support; And
And a photocatalyst and an inorganic adsorption filter medium bonded to the surface or inside of the support by a polyol.
Adding a photocatalyst and an inorganic material adsorbing material to a liquid polyol, heating and mixing the same;
Supporting a floating support on the mixed solution; And
And firing a mixed solution carrying the floating support. The method of manufacturing a floating polymeric material for water purification according to claim 1,
8. The method of claim 7,
Wherein the firing comprises:
Cooling the mixed solution carrying the floating support; And
And removing the floating support from the cooled mixture and washing the foamed support.
3 to 4 parts by weight of a photocatalyst and 2 to 3 parts by weight of an inorganic adsorbing material are added to 1 part by weight of a liquid polyol, followed by heating and mixing;
Heating the mixed solution to a temperature within a range of 100 to 150 ° C, and carrying the floating support for 10 seconds to 30 seconds; And
And removing the polyol by washing the supported floating support in water at a temperature in the range of 1 to 10 ° C and then washing the polyol.
A float for water purification according to claim 6; And
And a fixing means for fixing the float for water purification.

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