KR100694214B1 - Antifungal sand, brick, bloc, moulding for water purification and method of water purification using here - Google Patents

Abstract

The present invention relates to an antibacterial sand for water purification prepared by adding a latex diluent mixed with water to latex, stirring, and then adding a mixture of titanium oxide, a photocatalytic oxide, and an additive, stirring, and drying. The present invention relates to an antibacterial brick for water purification, an antibacterial block for water purification, and an antibacterial molding for water purification. In another aspect, the present invention is the water or pond, water in the tank, fish tank, or the like, the water purification of the antibacterial sand for water purification, antibacterial brick for water purification, antibacterial blocks for water purification, or antibacterial sculptures for water purification, etc. The present invention relates to a water purification method for purifying water by adding or removing the antibacterial sand to a lake or a river, and suppressing or removing green algae, eutrophication, odor generation, foaming, turbidity, and water deterioration.

Sand, titanium oxide, zeolite, silver, alumina, latex, water purification, green algae, eutrophication

Description

Antibacterial sand, antibacterial brick, antibacterial blocks, antibacterial sculptures and water purification method using the same {Antifungal sand, brick, bloc, molding for water purification and method of water purification using here}

The present invention is prepared by adding a mixture of titanium oxide, photocatalytic oxide, and additives to water, followed by stirring and drying, and adding the antibacterial sand and the antibacterial sand. A water purification antibacterial brick, water purification antibacterial block, water purification antibacterial sculptures, water purification antibacterial sand, water purification antibacterial bricks, water purification antibacterial blocks, or a method for purifying water quality by adding water purification antibacterial sculptures to the water system. It is about.

In general, water, ponds, waters in tanks or fish tanks, or lakes or rivers that accumulate in golf courses, parks, reservoirs, fish farms, etc., have various organic substances, wastewater inflow or spontaneous generation. Problems such as generation, foaming, turbidity increase, poor landscape, and deterioration of water quality are occurring.

Conventional techniques used to solve these problems can be divided into water purification agent treatment method and mechanical method. In general, water purifier treatment is a method of purifying water quality by directly adding chemicals or pesticides composed of polymer coagulants, photosynthesis inhibitors, herbicides, herbicides, etc. directly to the water system to suppress the growth of algae or kill eutrophication organisms. Since the effect is maintained to continuously put in the water system has the disadvantage of causing destruction of the natural system or environmental pollution. In addition, activated carbon, which has good adsorption power, may be used as a water purifier, but its adsorption capacity is limited, so it must be improved, exchanged or regenerated all the time, and its use period is extremely short and the price is high. There is a problem.

On the other hand, mechanical methods include prevention of eutrophication by a simple surface stirring device, prevention of eutrophication by simple agitation of a deep pond by an air supply device and oxygen supply, or prevention of eutrophication by input of a chemical such as a herbicide or photosynthesis inhibitor. And other filtration devices, ozone and ultraviolet light generating devices, etc., but there are problems such as facility investment costs, operating expenses, environmental destruction and environmental pollution.

Therefore, the present invention is to solve the conventional problems of water purification as described above, by producing a water purification antibacterial sand, antibacterial brick, antibacterial block, or antimicrobial sculptures and putting them into the water system secondary pollution or environmental pollution Its purpose is to ensure that the water quality is cleanly and economically.

The present invention provides an antibacterial sand for water purification prepared by adding a latex diluent mixed with water to latex, stirring, and then adding a mixture of titanium oxide, photocatalytic oxide, and additives, stirring, and drying. It provides an antibacterial brick for water purification, antibacterial block for water purification, and antibacterial moldings for water purification. In addition, the antibacterial sand, antimicrobial brick, antimicrobial block, or an antimicrobial sculpture is provided to the water system to provide a water purification method characterized in that to purify the water quality.

Hereinafter, the present invention will be described in detail.

The antibacterial sand to be applied to the water purification of the present invention has been disclosed in Patent Application No. 10-2004-99077 filed by the applicant of the present invention.

In the present invention, the antibacterial sand for water purification is produced by the following steps.

a) preparing sand with a diameter of 0.02-2 mm;

b) preparing 1 to 10% by weight of latex and 1 to 10% by weight of water based on the weight of sand, and then mixing the water with the latex to dilute the latex;

c) adding the latex diluent according to step b) to the sand prepared in step a) and stirring the sand;

d) preparing and mixing 1 to 10% by weight of titanium oxide, 0.5 to 10% by weight of photocatalyst oxide, and 0.1 to 10% by weight of additives based on the weight of sand prepared in step a);

e) stirring while slowly adding the mixture of step d) to the stirring mixture of step c); And

f) antibacterial sand for water purification is prepared by drying the whole stirred mixture in step e).

The latex in step b) uses at least one selected from the group consisting of acrylic latex, EVA (ethylene vinyl acetate) latex, epoxy latex, styrene-butadiene rubber (SBR) latex, urethane latex.

The additive in step d) uses one or more selected from the group consisting of zeolite, silver, alumina and silica. At this time, the additive is for increasing the antibacterial activity, deodorizing power, adsorption power.

Generally, an emulsion in which fine polymer particles are stably dispersed in an aqueous solution as a dispersion medium is called latex. These latexes have strong adhesion as binders, excellent miscibility with fillers, pigments, etc., and are inexpensive and have good mechanical and chemical stability. Therefore, in the present invention, the latex is used as the binder. That is, the latex is used to bind the fine particles of titanium oxide and titanium photocatalyst oxide to the sand particles to prepare the antibacterial sand for water purification of the present invention.

In general, titanium oxide usually refers to titanium oxide (IV). Titanium (IV) oxide is also called titanium dioxide, and it is also called titanic anhydride and titania. The chemical formula is TiO ₂ . In nature, it exists as minerals, such as brookite, anatase, pantitanium, and ilmenite (titanium iron). Three variants with different structures are known, rutile type, which is stable at high temperature, and a type that is stable at low temperature. Titanium oxide is used to remove the gloss of acid and alkali paints, highly concealable white pigments, artificial dogs, staple fibers, and chemical fibers. It is also used for polishing metal products, raw materials of organic titanium compounds, glazes of enamel and ceramics, titanium capacitors, dental materials, soaps, printing, printing inks and artificial leather. And active oxygen such as O ₂ , OH, H ₂ O ₂ generated on the surface of titanium oxide decomposes and kills bacteria and viruses on the surface of titanium oxide and has antibacterial activity.

The antibacterial sand for water purification of the present invention contains titanium oxide and photocatalytic oxide. Titanium oxide photocatalyst has the same chemical composition as titanium oxide, but is obtained by further purifying titanium oxide, and its particles are finer than redox oxide, deodorizing, sterilizing, self-cleaning, air purifying, and photocatalytic. It is distinguished from ordinary titanium oxide in that it performs better. In addition, the titanium oxide in the present invention may be used containing 5 to 20% by weight of silica relative to the titanium oxide, in this case titanium oxide has an adsorption power and the overall surface area is also increased, so deodorization, antibacterial function is improved.

The antibacterial brick for water purification of the present invention adds the antibacterial sand for water purification at the time of manufacture of the brick to prepare the antibacterial brick for water purification. Similarly, the antibacterial block for water purification of the present invention is prepared by adding the antibacterial sand for water purification in the preparation of the block, and the antibacterial sculpture for water purification is prepared by adding the antibacterial sand for water purification in the preparation of the molding.

The antibacterial sand for water purification, the antibacterial brick for water purification, the antibacterial block for water purification, and the antibacterial molding for water purification of the present invention prepared by the above are to perform deodorization, antibacterial function and photocatalytic function by the photoreaction of titanium oxide and titanium oxide photocatalyst. . The water or pond, water in a tank or a fish tank, and the water, or lake, where the antibacterial sand for water purification, the antibacterial brick for water purification, the antibacterial block for water purification, or the antibacterial sculpture for water purification are accumulated for a golf course, a park, a reservoir, a fish farm, etc. The water quality is purified by suppressing or eliminating green algae generation, eutrophication progression, odor generation, bubble generation, turbidity increase, water quality deterioration, etc. in the water system of the river or the like. At this time, the antibacterial sand for water purification may purify the water quality by adding 130 to 400 g per 1 L of water.

Hereinafter, the present invention will be described in more detail with reference to Examples. However, this invention is not limited by the following Example.

(Example 1)

Preparation of antibacterial sand for water purification.

First, 1 kg of sand having a diameter of 0.5 to 1.5 mm was prepared.

20 g of water was added to the mixture of 10 g of EVA latex and 10 g of acrylic latex to dilute the latex.

The latex diluent thus prepared was added to the sand and stirred.

20 g of titanium oxide, 10 g of photocatalyst titanium oxide, and 1 g of silver nanosol and silver powder were mixed as additives to enhance antibacterial and deodorizing power. At this time, titanium oxide was used as a powder having a diameter of 20 to 50 nm, a surface area of 100 m 2 / g, and a TiO ₂ content of 70% by weight, containing 10% by weight of silica. A powder having a weight of / g and a TiO ₂ content of 81% by weight was used.

Titanium oxide, a photocatalytic oxide, and a titanium oxide mixture made of an additive were prepared by the above. The mixture was slowly added to the mixture of the sand and latex diluting solution, stirred, and dried in an oven at 100 ° C. for 30 minutes to finally purify water. Antibacterial sand was prepared.

(Example 2)

Experiments were conducted to determine the survival of goldfish and the degree of water purification.

Prepare a tank 1 containing 2 kg of normal sand and 40 L of water and a tank 2 containing 2 kg of the antibacterial sand of Example 1 and 40 L of water respectively, add goldfish and continuously observe the foaming in each tank, Goldfish survival, water purification ability, odor, MLSS (Mixed Liquor Suspended Solids), COD (Chemical Oxygen Demand: Chemical Oxygen Demand) was measured, and the results are shown in Table 1 below.

(Based on 75 days) Countertop 1 Countertop 2 Bubble occurrence none Foaming Goldfish Survival survival survival Water Purification Ability Weak, green algae occur Rain, green algae suppression rancidity Dark none MLSS 100 ppm 20 ppm COD 21.5 ppm 4.14ppm Remarks Plain sand Antibacterial sand

(Example 3)

Experiments were carried out to investigate the survival and water purification of goldfish by promoting eutrophication of water quality and real field conditions.

Water tank 1 (normal sand 1 kg + water plants + water 5 L + goldfish), water tank 2 (antibacterial sand of Example 1: general sand = 500 g: 500 g + water plants + water 5 L + goldfish) were prepared and continued. Observation was carried out and the results are shown in Table 2 below.

(Based on 50 days) Countertop 1 Countertop 2 Bubble occurrence none Slightly Goldfish Survival survival survival Water Purification Ability weakness usually Algae occurrence has exist none Eutrophication increase control Turbidity of water increase Weak rancidity Dark slightly MLSS 90 ppm 60 ppm COD 18.2 ppm 12.3 ppm Remarks General sand Antibacterial: General = 5:

(Example 4)

The experiment was performed to determine the degree of water purification according to the goldfish survival conditions and the antibacterial sand mixing ratio for the antibacterial sand of Example 1.

Water tank 1 (antibacterial sand: normal sand = 100 g: 100 g + water 2L), water tank 2 (antibacterial sand: normal sand = 80 g: 120 g + water 2L), water tank 3 (antibacterial sand: normal sand = 60 g: 140 g + 2 L of water), water tank 4 (antibacterial sand: normal sand = 40 g: 160 g + water 2 L), water tank 5 (antibacterial sand: normal sand = 20 g: 180 g + water 2 L), A water tank 6 (2 L of water) was prepared, and a goldfish was put thereinto, followed by continuous observation. The results are shown in Table 3 below.

(For 40 days) Countertop 1 Countertop 2 Countertop 3 Countertop 4 Countertop 5 Countertop 6 Goldfish Survival survival survival survival survival survival survival rancidity none none none none slightly slightly MLSS 20 ppm 30 ppm 30 ppm 30 ppm 40 ppm 50 ppm COD 4.1 ppm 6.12 ppm 6.14 ppm 6.15 ppm 8.92 ppm 11.1 ppm Remarks Antibacterial: General = 5: Antibacterial: General = 4: 6 Antibacterial: General = 3: 7 Antibacterial: General = 2: 8 Antibacterial: General = 1: 9 enemy

(Example 5)

The experiment was carried out to determine the water purification ability of the antibacterial sand and the general sand of Example 1.

Water tank 1 (antibacterial sand: normal sand = 40 g: 160 g + water 2L), water tank 2 (normal sand 200 g + water 2L), water tank 3 (antibacterial sand 200 g + water 2L), water tank 4 (normal 200 g of sand + 2 L of water) were prepared and observed continuously, and the results are shown in Table 4 below.

(Based on 15 days) (Based on 70 days) Countertop 1 Countertop 2 Countertop 3 Countertop 4 Green algae Occurrence suppression Occur Occurrence suppression Occur Turbidity of water Weak Thickening Weak Thickening rancidity none slightly none middle MLSS 10 ppm 20 ppm 10 ppm 30 ppm COD 2.21 ppm 4.45 ppm 2.36 ppm 7.10 ppm Remarks Antibacterial: General = 2: 8 Plain sand Antibacterial sand General sand

(Example 6)

The experiment was carried out to determine the water purification ability of the antibacterial sand of Example 1 by proceeding the experiment for the field test of the general tank, fish farm, pond.

Basin 1 (normal sand 2 kg + water 80 L), basin 2 (antibacterial sand: normal sand = 600 g: 1400 g + water 80 L), water tank 1 (normal sand 1 kg + water 40 L), water tank 2 (antibacterial Sand: General sand = 300 g: 700 g + 40 L of water) were prepared, and the goldfish was placed and continuously observed. The results are shown in Table 5 below.

(Based on 15 days) Basin 1 Basin 2 Countertop 1 Countertop 2 Goldfish survival survival survival survival survival Green algae Slightly none Occur none Turbidity of water increase clear increase clear rancidity none slightly none middle MLSS 20 ppm 10 ppm 30 ppm 10 ppm COD 3.48 ppm 1.92 ppm 6.18 ppm 2.27 ppm Remarks General sand Antibacterial: General = 3: 7 General sand Antibacterial: General = 3: 7

As shown in Tables 1 to 5, which are the results of Examples 2 to 6 above, when the antibacterial sand prepared according to the present invention is put into the water system, green algae generation, odor generation, foaming, turbidity increase, deterioration of water quality, etc. are suppressed or eliminated. It can be seen that the MLSS and COD values are also relatively decreased.

(Example 7)

Water and antibacterial sand volume ratio standardized test.

Five tanks each containing 1 L of water were prepared, and 100 g, 130 g, 200 g, 300 g, and 400 g of antibacterial sand were added to each tank and left for 30 days, and then the MLSS and COD values were measured. It is shown in Table 6 below. MLSS and COD values were also measured after 30 days in a tank 6 containing only 1 liter of raw water without adding antibacterial sand.

Countertop 1 Countertop 2 Countertop 3 Countertop 4 Countertop 5 Countertop 6 MLSS 40 ppm 20 ppm 20 ppm 10 ppm 10 ppm 60 ppm COD 9.13 ppm 3.49 ppm 3.25 ppm 3.05 ppm 2.81 ppm 14.2 ppm Antibacterial sand quantity / water 1L 100 g 130 g 200 g 300 g 400 g 0 g

According to Table 6, it can be seen that the water tanks 2 to 5 except for the water tank 1 are better than the water tank 6 without the antibacterial sand. Therefore, it can be seen that the antibacterial sand for water purification can effectively purify the water quality by adding 130 to 400 g per 1 L of water.

As described above, the water or pond, water in a tank or a fish tank where the antibacterial sand for water purification, the antibacterial brick for water purification, the antibacterial block for water purification, or the antimicrobial sculpture for water purification are accumulated in a golf course, a park, a reservoir, a fish farm, etc. Alternatively, if it is put into water, such as a lake or a river, it can purify the water quality by suppressing or eliminating green algae, eutrophication, odor generation, foaming, turbidity, and deterioration of water in the water system. Does not involve secondary environmental damage or pollution.

Claims (8)

delete delete delete delete delete delete delete In the water purification method, a) preparing sand with a diameter of 0.02-2 mm; b) preparing 1 to 10% by weight of latex and 1 to 10% by weight of water based on the weight of sand, and then mixing the water with the latex to dilute the latex; c) adding a latex diluent according to step b) to the sand prepared in step a) and mixing the mixture; d) 0.1 to 10% by weight of titanium oxide, 0.5 to 10% by weight of photocatalytic titanium oxide, and zeolite, silver, alumina and silica in an amount of 0.1 to 10% by weight, based on the weight of sand prepared in step a). Preparing after mixing 10% by weight; e) stirring while slowly adding the mixture of step d) to the stirring mixture of step c); And f) drying the entire stirred mixture in step e); adding antibacterial sand for water purification to a pond, water tank, fish tank, lake, or river to generate green algae, eutrophication, odor generation, foam generation, Increase or decrease turbidity, deteriorate water quality, The water purification antibacterial sand is water purification method, characterized in that the 130 to 400 g per 1 L of water.