KR101450151B1 - Composition for removing algae - Google Patents

Abstract

The present invention provides a composition for algae removal comprising mono and potassium sulfate to provide an eco-friendly and effective algaecide.

Description

[Composition for removing algae]

TECHNICAL FIELD The present invention relates to a composition for removing algae, and more particularly, to a composition for removing green tide and red algae comprising mono and potassium sulfate.

The conditions such as precipitation, sunshine and water temperature are well suited to the growth conditions, and the pollution is introduced from the land, and the phytoplankton grows and accumulates in the river, lake, and sea in a large amount at a time, so that the color of seawater or inland water becomes green, These phenomena are called red tide, green tide phenomenon, respectively.

Green algae is a phenomenon that the green algae, which are phytoplankton, are greatly increased in an eutrophic lake or a slow-flowing river, and change the water color to green. When green algae are covered on the surface of the lake, sunlight is blocked in water and no additional dissolved oxygen The amount of dissolved oxygen in the water is reduced. This causes fish and aquatic creatures to die, smell bad, and destroy the ecosystem of the water, resulting in a number of social, economic and environmental problems. Once the nutrients entering the water are not removed, they remain in the aquatic ecosystem so that the algal blooms are recycled.

Red tide is a phenomenon in which plankton suddenly reproduces in huge numbers and changes the color of sea, river, canal, lake, etc. In general, water is often reddish and is called red tide in the sense of red water. Depends on the color of the plankton causing it. Phytoplankton such as diatom and dinoflagellate are the most common plankton causing red tides. In addition, there are many kinds of plankton that cause red tide by cyanobacteria, prototrophs (noctiluca), and ciliates (mesodinium) . The greatest cause of red tides is the eutrophication of water, as in South Korea, where there are too many organic nutrients in the water. It is also known that red tide occurs when the temperature of the water increases due to the change of temperature and the microorganisms reproduce more vigorously or when the wind is not blowing so much that the sea water does not mix well. Especially, it is known that red tide appears more frequently due to the increase of water temperature due to changes in the global environment such as El Niño.

As a method of removing red tide or green tide, there is known a method of removing green tide using yellow soil (Korean Patent No. 0819460) and a method of removing red tide using gypsum or gypsum (Korean Patent Publication No. 2004-0083045).

However, such a conventional green or red tide removing agent has a problem that the removal efficiency of the green tide is low, the removal effect is temporary, the green tide or the red tide removing agent used is not stable, and is harmful to the human body and the environment, .

According to one embodiment of the present invention as described above, the composition according to an embodiment of the present invention can provide an effect of effectively removing algae. Of course, the scope of the present invention is not limited by these effects.

According to one aspect of the present invention, there is provided a composition for removing algae comprising mono and potassium sulfate.

In the composition for removing algae, the mono and potassium sulfate may be composed of potassium monopersulfate (KHSO ₅ ), potassium hydrogensulfate (KHSO ₄ ), and potassium sulfate (K ₂ SO ₄ ) _{May be} 35 to 50 parts by weight of potassium monopersulfate (KHSO ₅ ), 15 to 30 parts by weight of potassium hydrogensulfate (KHSO ₄ ) and 20 to 40 parts by weight of potassium sulfate (K ₂ SO ₄ ).

In the composition for removing algae, the composition may further comprise sodium chloride. The sodium chloride may be contained in an amount of 1 to 5% by weight based on the total weight of the composition. Further, it may further include percarbonate. The percarbonate may be sodium percarbonate (2Na ₂ CO ₃ .3H ₂ O ₂ ) or potassium percarbonate (2K ₂ CO ₃ .H ₂ O ₂ ) and may be included in an amount of 5 to 30 wt% .

In the composition for removing algae, the composition for removing algae may spray 0.005 to 5% (w / w) based on the total weight of the algae contaminated water.

In the composition for removing algae, mono and potassium sulfate, sodium chloride, and percarbonate may be prepared in the form of liquid, solid, powder, and tablet, and may be used to remove algae such as lake water, reservoirs, dams, and rivers .

According to another aspect of the present invention, there is provided an algae removal kit comprising individual packages of mono, potassium sulfate and sodium chloride, respectively.

In the kit, the mono and potassium sulfate may be composed of potassium monopersulfate (KHSO ₅ ), potassium hydrogensulfate (KHSO ₄ ), and potassium sulfate (K ₂ SO ₄ ) persulfate (KHSO ₅₎ may be 35 to 50 parts by weight of potassium hydrogen sulfate (KHSO ₄₎ 15 to 30 parts by weight of potassium sulfate (K ₂ SO ₄₎ 20 to 40 parts by weight.

The kit may further comprise percarbonate, wherein the percarbonate may be sodium percarbonate (2Na ₂ CO ₃ .3H ₂ O ₂ ) or potassium percarbonate (2K ₂ CO ₃ .H ₂ O ₂ ) 5 to 30% by weight based on the weight of the composition.

The mono and potassium sulfate, sodium chloride and percarbonate contained in the kit may be prepared in the form of liquid, solid, powder, or tablet.

According to another aspect of the present invention there is provided an algae removal kit comprising individual packages of 70-95 wt% aqueous solution of mono and potassium sulfate, and 5-30 wt% aqueous sodium chloride solution, respectively.

In the kit, the mono and potassium sulfate may be composed of potassium monopersulfate (KHSO ₅ ), potassium hydrogensulfate (KHSO ₄ ), and potassium sulfate (K ₂ SO ₄ ) persulfate (KHSO ₅₎ may be 35 to 50 parts by weight of potassium hydrogen sulfate (KHSO ₄₎ 15 to 30 parts by weight of potassium sulfate (K ₂ SO ₄₎ 20 to 40 parts by weight.

The kit may further contain 5 to 30 wt% of an aqueous carbonate solution, and the percarbonate may be sodium percarbonate (2Na ₂ CO ₃ .3H ₂ O ₂ ) or potassium percarbonate (2K ₂ CO ₃ .H ₂ O ₂ ) And may include 5 to 30% by weight based on the total weight of the total composition.

The mono and potassium sulfate, sodium chloride and percarbonate contained in the kit may be prepared in the form of liquid, solid, powder, or tablet.

According to another aspect of the present invention, there is provided a algal removal method comprising spraying mono and potassium sulfate in an amount of 0.005 to 5% (w / w) based on the total weight of the algal contaminated water.

The algae removal method may further include the step of spraying sodium chloride, and the sodium chloride may be sprayed in an amount of 0.0001 to 0.3% by weight based on the total weight of the algae contaminated water. The algae removing method may further include spraying a carbonate. The percarbonate may be sodium percarbonate (2Na ₂ CO ₃ .3H ₂ O ₂ ) or potassium percarbonate (2K ₂ CO ₃ .H ₂ O ₂ ) and may be applied at a rate of 0.001 to 3 wt% .

In the algae removal process, the percarbonate, acid anhydride, and mono and potassium sulfate may be prepared in the form of solids, powders, tablets, and may be applied to algae removal of fresh water and seawater, such as lake, reservoir, have.

According to one embodiment of the present invention as described above, the composition according to an embodiment of the present invention can provide an effect of effectively removing algae. Of course, the scope of the present invention is not limited by these effects.

FIG. 1 is a graph showing that suspended solids are removed when a composition according to an embodiment of the present invention is treated with green algae contaminated water. FIG.
FIG. 2 is a graph showing that chlorophyll-a is removed when a composition according to an embodiment of the present invention is treated with green algae contaminated water.
FIG. 3 is a photograph showing that the green algae are removed when the composition according to an embodiment of the present invention is treated with green algae contaminated water.

The terms used in this document are defined as follows.

As used herein, " algae " means algae that cause algal or algal blooms and include, for example, Alexandrium spp. (Urban Tillmann, et al., Mar. Ecol. Prog. : 47-58, 2002), Dinophysis spp. (Christopher O. Miles, et al., Chem. Res. Toxicol., 17 (11): 1423-1433, 2004), Gambia disastercoxus Gambierdiscus toxicus) (R. Bagnis, et al., Toxicon, 18 (2) 199-208, 1980), Gymnodinium catenatum (Martina A Doblin, et al., Journal of Experimental Marine Biology and , Karenia brevis (Karenia brevis, et al., Harmful Algae, 2 (2): 147-160, 2003), Karenia brevis sulcatus Karenia brevis sulcatum), Karlodinium veneficum (PATRICIA M. GLIBERT, et al., &Quot; Journal of Industrial Microbiology & Biotechnology, 30 (7): 383-406, Journal of Shellfish Research, 26 (4): 919-925, 2007 ), Lyngbya (Wayne W. Carmichael, Human and Ecological Risk Assessment: An International Journal, 7 (5), 2001), Pfiesteria spp. (Joann M. Burkholder, Phycologia, 40 (3): 186-214, 2001), Pfiesteria piscicida (Alan J. Lewitus, et al., Journal of Phycology, 35 (2): 303-312), Protocentrum Lima Prorocentrum lima) (I. Bravo, et al., Toxicon, 39 (10): 1537-1545), Protoperidinium crassipes (D. Stoecker, et al., Ecological Studies, Part C, 189: 177-187, 2006 Pseudo-nitzschia spp. (Astrid Schnetzer, et al., Harmful Algae, 6 (3): 372-387, 2007), pyrodinium bahamense var. ~ Gires Usup, et al., Natural Toxins, 2 (5): 254-262).

As used herein, " potassium monopersulfate (PMPS) " refers to a compound consisting of potassium sulfate (K ₂ SO ₄ ) and is conventionally used as a "shocking agent" Chlorine compounds were added to disinfect the pool contaminated with organic matter and the like. The addition of mono and potassium sulfate to swimming pools and hot springs resulted in the reduction of chloramine and chlorine contents due to the odor of chlorine compounds and organic matter. As disclosed in U.S. Patent No. 7,255,797, U.S. Pat. No. 4,975,109 and U.S. Patent Application No. 20100181264, it is known that the effect of removing mono and potassium sulfate in water is reduced. However, the addition of mono and potassium sulfate together with halogen, oxidizing agent, , Transition metal catalysts and the like. The present inventors have proved to be the best by which a single component of mono and potassium sulfate alone can sufficiently remove algae.

As used herein, " composition for algae removal " means a composition composed of mono and potassium sulfate, and may further include sodium chloride or percarbonate. Conventionally, green algae contaminated water was sprayed with yellow soil or copper sulfate, but the algae removal effect was temporary or secondary contamination. However, the mono and potassium sulfate constituting the composition for removing algae according to an embodiment of the present invention is not only stable, environmentally friendly, but also provides an effect of decomposing algae with excellent oxidizing power as described below:

HSO ₄ ^- + H ₂ O -------> HSO ₅ ^- + 2H ⁺ + 2e ^- (standard electrode potential: -1.44 V); and

(SO ₄ ^- ) · + e ^- -------> SO ₄ ^- (standard electrode potential: 2.5 V).

The addition of sodium chloride (NaCl) is decomposed by mono and potassium sulfate to provide a temporary chlorination effect. In addition, it is dissolved in sodium percarbonate water to exhibit an oxidation potential of about 1.7 to 3.0 V through the following oxidation reaction, and provides excellent oxidizing power. Thus, it can be used in addition to compositions according to one embodiment of the present invention:

H ₂ O ₂ + 2H ⁺ + 2e ^- -> 2H ₂ O (oxidation potential: 1.8V);

2OH + 2H ⁺ + 2e ^- - & gt ^; 2H ₂ O (oxidation potential: 2.8V); And

^{_{HO 2 · + 2H + + 2e}} - -> 2H 2 O ( oxidation potential: 1.7V).

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. It should be understood, however, that the present invention is not limited to the embodiments shown in the drawings, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It is provided to fully inform the category of invention to a knowledgeable person. Also, for convenience of explanation, the components may be exaggerated or reduced in size.

FIG. 1 is a graph showing that suspended solids are removed when a composition according to an embodiment of the present invention is treated with green algae contaminated water. FIG. The composition of Examples 1 to 3 according to one embodiment of the present invention was treated with 0.01% based on the total weight of the green-polluted water, and after one day, the effect of removing the suspended matters was confirmed. As a result, (Example 2) exhibiting a chlorine disinfecting effect (Example 2) and a percarbonate exhibiting an oxidizing power (Example 3) also exhibited a superior floating matter removal effect Effect. These results demonstrate the effect of mono and potassium sulfate monocomponents on good algal pollution and suggest the potential utilization of chlorine-based disinfectants or oxidants together with mono and potassium sulfate monocomponents.

FIG. 2 is a graph showing that chlorophyll-a is removed when a composition according to an embodiment of the present invention is treated with green algae contaminated water. The effect of removing chlorophyll-a was confirmed by the chlorophyll-a removal effect after 1 day from 0.01% treatment of the compositions of Examples 1 to 3 according to one embodiment of the present invention based on the total weight of the green polluted water. As a result, it was confirmed that the composition of Example 1 composed of mono and potassium sulfate mono components showed excellent chlorophyll-a removal rate of about 98%. The chlorophyll removal rate of 92% was shown in the case of sodium chloride (Example 2) and 85.9% in the percarbonate (Example 3) showing the oxidizing power. These results are the result of proving that mono and potassium sulfate components can be usefully used as algae removers.

FIG. 3 is a photograph showing that the green algae are removed when the composition according to an embodiment of the present invention is treated with green algae contaminated water. In order to find out that the composition according to an embodiment of the present invention can be applied to various kinds of algae removal, it is preferable to use a filamentous type, a planktonic type which shows water color to green or a green alga (chara / nitella) was treated once at a rate of 0.01% (w / w), and the degree of algae removal was observed. As a result, it showed excellent algae removing effect irrespective of kinds of green algae. This means that the composition according to one embodiment of the present invention can be widely used for various algae removal.

Hereinafter, the present invention will be described in more detail with reference to Examples and Experimental Examples. It should be understood, however, that the invention is not limited to the disclosed embodiments and examples, but may be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to fully inform the owner of the scope of the invention.

≪ Examples 1 to 3 >

The composition for algaecide according to one embodiment of the present invention was prepared with the components and compositions as shown in Table 1 below. Each component was in a solid state and was mixed just prior to injection into the algae contaminated water.

Mono and potassium sulfate Sodium chloride
Percarbonate Citric acid Example 1 100 parts by weight - - - Example 2 95 parts by weight 5 parts by weight - - Example 3 50 parts by weight - 45 parts by weight 5 parts by weight

≪ Experimental Example 1 >

In order to confirm the effect of the composition for removing algae according to an embodiment of the present invention, 0.01% (w / w) of the composition of Example 1, 2 or 3 was added based on the total weight of the green- The removal effect of suspended solids (ss) was confirmed by using a laminar method.

As a result, when the compositions of Examples 1 to 3 were treated once with the green-brown contaminated water for one day as shown in Fig. 1 and Table 2, about 40 to 50% of suspended solids were removed. These results demonstrate the effective removal of suspended solids from mono and potassium sulphate.

Suspended matter content (mg / ml) Removal efficiency (%) Before processing After processing Example 1 17.5 8.5 51.43 Example 2 17.5 9 48.57 Example 3 17.5 10.5 40.00

<Experimental Example 2> Chlorophyll-a removal effect

After 0.01% (w / w) of the composition of Example 1, 2 or 3 was added based on the total weight of the green water contaminated water, the effect of removing green tide and red tide was confirmed by changing the chlorophyll-a content of the contaminated water. As a result, when the compositions of Examples 1 to 3 were treated once with the green-polluted water for one day as shown in Fig. 2 and Table 3, about 40 to 50% of suspended solids were removed. These results demonstrate that mono and potassium sulphate can be effectively used to remove suspended solids.

Chlorophyll-a Content (ppm) Removal efficiency (%)
Before processing After processing Example 1 344.9 8.9 97.42 Example 2 344.9 20.6 94.03 Example 3 344.9 48.5 85.94

Next, the present inventors observed whether the composition of Example 1 according to an embodiment of the present invention was effective in removing algae in actual condition. Specifically, the composition of Example 1 was added to 0.01% (w / w) of the composition of the filamentous type floating on the surface of the water, the planktonic type causing the water to appear green or the polluted water causing chara / w / w), and the degree of removal of green algae was observed.

As a result, as shown in FIGS. 3A, 3B, and 3C, it was observed that the green algae rooted in the algae algae, microalgae, and the ground were effectively removed within 4 to 5 days. These results demonstrate that the composition according to one embodiment of the present invention is easy to use and can effectively remove the algae.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

Claims (18)

Wherein the composition is composed of mono and potassium triphosphate. The method according to claim 1,
Wherein the mono and potassium triflate is comprised of potassium monopersulfate (KHSO ₅ ), potassium hydrogensulfate (KHSO ₄ ), and potassium sulfate (K ₂ SO ₄ ). delete delete delete delete delete delete delete delete delete delete And spraying mono and potassium sulfate triple salt at 0.005 to 5% (w / w) based on the total weight of the algae contaminated water. delete delete delete delete delete

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