KR20010045824A - Exclusion Method For Microorganism of Seawater change color - Google Patents

Abstract

PURPOSE: To prevent large-scaled red tide that happens frequently in enclosed sea area, loess and natural minerals are processed. Since loess of the present invention is applied after sorting/pulverizing, it does not directly settle down on seabed. Instead, fine particle of loess forms suspension and dispersion over wide range of sea area. Therefore, loess particle has enough chance to adsorb algal bacteria and has little adverse effect to submarine ecosystem. CONSTITUTION: Loess acting as adsorbent is sorted to satisfy particle size distribution of 1 to 500μm and then heat treated at 600deg.C for 1hr. When happening of red tide, processed loess 93-95wt.% and natural mineral such as tourmaline and calcium hydroxide 1-7wt.% are sprayed sea area under red tide.

Description

Exclusion Method For Microorganism of Seawater change color}

According to the present invention, when sprinkling natural raw yellow soil as it is, it is possible to affect the seabed environment by piling up unprotected piles of sediment, thus mixing powder yellow clay and natural minerals that are commercial additives. A method for removing red tide microorganisms that prevents ecological changes and pollution in the seabed environment due to sedimentation without causing damage to aquatic organisms in coastal waters by manufacturing a red tide removal material and spraying an appropriate amount on the sea level where red tide occurs. will be.

In general, the red tide phenomenon is a phenomenon caused by discoloration of the color of the sea water due to physical growth or large quantities at a time when microorganisms inhabiting the sea become suitable environmental conditions for breeding. Occurs in the closed inner sea area where there is little seawater exchange with the ocean in order to maintain a constant nutrient concentration, and promotes nutrients and growth necessary for the growth and reproduction of red tide organisms by precipitation and precipitation of sea sediments from land. It is supplied with trace elements such as vitamins, iron, and manganese, which are richly dissolved in seawater, causing red tide.

In addition, if the amount of sunshine necessary for photosynthetic activity of the red tide organisms and the temperature of the seawater is suitable for growth, it may cause the occurrence of red tide.

Recently, red tide occurs due to the increasing frequency of widening, toxicization and prolonged phenomena, and contaminants such as nitrogen and phosphorus, which cause red tide, continue to increase. You must find a way to do it.

In recent years, the development of coastal cities and coastal industries, and a large number of contaminants are introduced into the coast, causing frequent red tide and the rapid development of coastal aquaculture industry, causing massive damage at once. Therefore, there is an urgent need for technology development to remove red tide organisms.

Therefore, it is necessary to maintain a high-quality coastal fisheries environment, to prevent red tide in advance, and to minimize fishery damage after red tide occurs.

Currently, existing methods for removing and removing red tide include chemical spraying, ultrasonic treatment, ozone treatment, and bio-control, which destroy and kill red tide, but for industrial use, mass production and large scale It must be competitive in price as it should not affect the spreading and subsea ecosystems, be easy to transport and simple to use.

In general, ocher is a material that can be easily obtained anywhere, has no harm to living organisms, and has been proved to be harmless in the dissolution experiments under the Japanese Marine Pollution Prevention Act, and the role of natural circulation and natural purification is particularly high. It has the property of adsorbing and flocculating suspended solids, which can be used as a material to remove red tide.

However, if the raw raw clay, which is not purified and processed, is applied to the sea as it is, the loess and impurities are settled as it is, so there is no time for adsorption and aggregation of red tide organisms. Because of dumping, there is a problem that can cause secondary environmental pollution of the seabed.

The present invention has been made in order to solve the above problems, and after the first step of refining and classifying the natural raw ocher, secondly processed to the optimum temperature conditions by high temperature drying and thirdly by the fine grinding The precision classification process is passed through the optimum particle size condition with the adjusted particle distribution composition. Red tide removal material produced by mixing the powder loess passed at the optimum temperature and granularity with the commercial additive which is finally natural mineral. The present invention provides a method for removing red tide microorganisms by optimum conditions of powder loess and additives.

In order to achieve the above object, the present invention is a powdered loess (temperature condition of 100 ~ 1000 ℃, crushing particle size condition; 1 ~ 1500㎛) as an adsorbent, calcined lime and mound of natural minerals Provided is a method for removing red tide microorganisms by using tourmaline as an additive (addition amount range: 1 to 7 weight) to absorb and aggregate red tide organisms.

Here, the optimum condition of the particle size distribution of the finely divided powder ocher is in the range of 1 to 500 μm, and the optimum temperature of the powder ocher to be processed and heat treated is 600 ° C./1hr.

It would be desirable.

In addition, 93-95 weight of powdered yellow clay (1 ~ 500㎛, 600 ℃) and 5 ~ 7 weight of natural minerals processed by refining process are mixed with seawater to make large volume spray on the sea when red tide occurs. Provided is a method for removing red tide microorganisms to achieve red tide microorganisms.

Hereinafter, preferred embodiments will be described in order to be described easily to those skilled in the art to which the present invention pertains.

The present invention is a high-efficiency red tide removal material manufactured to prevent the destruction of aquatic organisms and fisheries environment due to red tide in advance and to minimize the damage of fishery after red tide to reduce red tide. Silver ocher 93-99 weight and commercial natural minerals obtained by refining and processing high quality natural raw ocher at high temperature drying at 100 ~ 1000 ℃ and fine grinding process of 1 ~ 1500㎛. 1-7 wt% of slaked lime and tourmaline mineral powder, an anion-generating natural material, are mixed powders and dissolved in seawater. Red tide microbes can be removed.

Here, the component analysis data for mineral powders, which are commercial loess and additives, are as follows.

Mineral name SiO ₂ Al ₂ O ₃ Fe ₂ O ₃ CaO MgO K ₂ O Na ₂ O B ₂ O ₃ Lg-loss ocher 42.5 30.6 8.32 0.60 1.69 1.23 2.09 11.5 Slaked lime 0.98 0.67 0.10 71.0 0.65 Tourmaline 38.5 35.9 3.0 0.2 0.1 0.5 8.1

And the high-efficiency red tide inhibitor used in the present invention effectively removes red tide because it is used in a fine powder state, and in particular, since the particle distribution of powder loess is classified and adjusted in various particle sizes from ultra fine grade particles to fine grade grade particles, The main feature of the invention is that the powder loess is configured to be efficiently adsorbed, aggregated and removed while settling at sea level according to the formation layer of the organism. In addition, due to the large specific surface area of the ocher particles, the ocher particles migrate to the red tide particles, causing sufficient collision with the red tide particles, and forming chemical adsorption and aggregates.

Due to the high temperature drying and the various particle size distribution, the double ocher is widely dispersed and dispersed in the seawater rather than rapidly settling in the seawater, causing sufficient collision with the red tide organisms. And the red tide forming layer in the seawater is formed in the depth of 3 ~ 5m to form the red tide band, so spraying by various particle size distribution of powder loess seizes the red tide creatures according to the particle level as the yellow soil particles settle in the sea surface. It is an important feature of the operation of the present invention, which is designed to allow efficient red tide control by spraying an appropriate amount within a short time since it can remove the aggregates.

On the other hand, adsorption means that a substance in a gaseous phase or a liquid phase is in equilibrium while maintaining a different concentration from the inside of the phase at the interface with other phases in contact with the phase. It refers to a phenomenon that reaches, the cause of adsorption is a chemical bonding force between the solid and the adsorption dill material and the phenomenon of agglomeration of molecules on the surface.

Most natural raw ocher particles have 5 to 10 mm or more) is so large that the sedimentation rate of the particles is much greater than the diffusion rate, making it difficult to obtain a dispersion state effective for removing red tide.

The physical forces of ocher particles in seawater are settling and diffusion. As the size of ocher particles increases, the settling velocity of the particles increases geometrically and the diffusion velocity of the particles decreases geometrically. Here, the sedimentation speed is the speed at which the particles sink in the vertical direction by gravity, and the diffusion speed is the speed at which the particles spread out in the horizontal and vertical directions by colliding with the water molecules.

The physicochemical forces of the ocher particles themselves in seawater are attractive and repulsive forces. Seawater is a high concentration of electrolyte solution and ocher particles exhibit very thin electrical double layers in seawater, so there is little repulsive force between mutually approaching ocher particles. Only the attraction force acts to form flocculation easily.

In the present invention, the adsorption principle of powder ocher is widely dispersed in seawater, causing sufficient collision with red algae, and the red tide organisms due to attraction between the colloid particles of powder ocher are adsorbed into the pore layer and surface layer of powder ocher by high temperature drying. As the molecules are adsorbed, they settle naturally to remove red tide.

The experimental results according to the present invention are shown in the following table.

Comparison of Removal Rate of Toxic Red Tide by Different Particle Sizes of Powdered Ocher Test Zone / Time 0 min 10 minutes 30 minutes 60 minutes Natural raw yellow soil (raw) Red tide 2000 710 630 590 Removal rate () 0 64.5 68.5 70.5 Powder ocher (adjustment of particle size after drying and grinding operation at 100 ℃) 1000 ~ 1500㎛ Red tide 2000 390 355 335 Removal rate () 0 80.5 82.3 83.3 500 ~ 1000㎛ Red tide 2000 270 233 228 Removal rate () 0 86.5 88.4 88.6 1 ~ 500㎛ Red tide 2000 230 215 185 Removal rate () 0 88.5 89.3 90.8

The toxic red algae used in the experiments were cultured from Cochlodinium polykrikoidｅs flagella algae, the red algae density was within the range of 2000cells / ℓ and the ocher remedy dose was about 10g / ℓ.

As a result of the experiment, in the case of natural fresh loess, the red tide removal rate was about 70.5 after 60 minutes, but after the soil was sufficiently dried in the dryer for about 1 hour at 100 ℃, it was crushed by a ball mill (dry mill) for about 2 hours and then classified In the range of 1 ~ 500㎛, 500 ~ 1000㎛, and 1000 ~ 1500㎛ by particle grades, the red tide test of powder yellow soil used by adjusting the particle size composition by cumulative distribution weight in each range, 1 ~ after 60 minutes The red tide removal rate was 90.8 at 500㎛, 88.6 at 500 ~ 1000㎛, and 83.3 at 1000 ~ 1500㎛. From the results of this experiment, it is more efficient to use red tide removal efficiency after adjusting the grain size than using raw raw clay. In addition, after adjusting the particle size composition by the cumulative distribution weight in each particle size range and comparing the red tide removal rate, by the cumulative distribution weight in the range of 1 ~ 500㎛ Experimental results show that the adjusted ocher particles can obtain the optimum red tide removal effect.

Comparison of Removal Rate of Toxic Red Tide Microorganisms by High Temperature Drying Temperature in Powder Loess of Optimum Grain Size Test zone / hour (1 ~ 500㎛ particle size powder loess applied) 0 min 10 minutes 30 minutes 60 minutes 100 ℃ Red tide 2000 238 210 182 Removal rate () 0 88.1 89.5 90.9 200 ℃ Red tide 2000 222 204 184 Removal rate () 0 88.9 89.8 90.8 400 ℃ Red tide 2000 208 198 177 Removal rate () 0 89.6 90.1 91.2 600 ℃ Red tide 2000 156 140 125 Removal rate () 0 92.2 93.0 93.8 800 ℃ Red tide 2000 227 222 220 Removal rate () 0 88.7 88.9 89.0 1000 ℃ Red tide 2000 265 258 250 Removal rate () 0 86.8 87.1 87.5

The red tide organisms used in the experiment were cultured species of Cochlodininm polykrikoides flagella algae, the density of red tide was carried out within the range of 2000cells / ℓ and the amount of powdered ocher remedy was used about 10g / ℓ.

As a result, the removal rate of red tide organisms was observed by using powder loess adjusted to the particle size of 1 ~ 500㎛, maintained at 100 ~ 1000 ℃ in an electric furnace for 1 hour, and then cooled naturally using powder loess for each high temperature drying temperature. After 60 min, 90.9 at 100 ° C, 90.8 at 200 ° C, 91.2 at 400 ° C, 93.8 at 600 ° C, 89.0 at 800 ° C and 87.5 at 1000 ° C, the red tide removal rate was found.

As mentioned above, it was fixed at the optimum condition of powder loess adjusted by the cumulative distribution weight in 1 ~ 500㎛ particle size composition and observed red tide removal efficiency according to the change of each high temperature drying temperature. Can be.

In general, the crystal structure of loess is composed of tetrahedral layer and octahedral layer, and layered silicates containing water molecules between the two-layer lattice. It is composed of minerals. In the differential thermal analysis curve, the endothermic peak near 550 ~ 600 ℃ is due to dehydration of crystalline water. Complete dehydration until the reaction heat of 136㎈ / gr.

Therefore, when the ocher is dried at a high temperature around 600 ℃, the ocher is activated and there is no time for crystallization. Therefore, the high crystallization energy is preserved inside. Since it is naturally settled, he created the principle to remove red tide.

However, when the high temperature drying temperature of powder loess is over 700 ℃, the internal crystal structure starts to change slowly, and around 980 ℃, mullite (Allite 3Al ₂ O ₃ 2SiO ₂ ) and It is thought that red tide removal efficiency decreases above 700 ° C because it loses the inherent adsorption and cohesiveness of the loess itself by changing to the crystal structure of -Al ₂ O ₃ .

At temperatures below 550 ° C, it is thought that red tide removal efficiency decreases due to the decrease of specific surface area and porosity, as the crystallized water remains intact.

Comparison of Red Tide Removal Rate with Natural Minerals Added to Optimum Powder Loess Test Zone / Time (Optimized Powder Ocher + Natural Minerals) 0 min 10 minutes 30 minutes 60 minutes 99 + 1 Red tide 2000 130 124 116 Removal rate () 0 93.5 93.8 94.2 97 + 3 Red tide 2000 112 97 77 Removal rate () 0 94.4 95.2 96.2 95 + 5 Red tide 2000 107 53 36 Removal rate () 0 94.7 97.4 98.2 93 + 7 Red tide 2000 108 44 32 Removal rate () 0 94.6 97.8 98.4

(Optimum powder ocher: particle size 1 ~ 500㎛, high temperature drying temperature 600 ℃, natural minerals; slaked lime + tourmaline)

The red tide organisms used in this experiment were cultured species of Cochlodinium polykrikoides flagella algae, and the density of red tide organisms was about 2000 cells / ℓ.

As a result of the experiment, the change of red tide removal rate according to 1,3,5,7 weight of natural mineral added to the optimum powder loess was 94.2, 96.2, 98.2, 98.4 after 60 minutes, which was not added by red tide removal efficiency. The red tide removal efficiency was slightly higher, and the red tide removal efficiency was significantly higher when it was added 5 to 7 than when it was added 1 to 3, but the economic efficiency was 5 It is thought that optimum red tide removal efficiency can be obtained when the degree additive is added.

Note) The red tide organisms used in the experiments were cultured with Cochlodinium polykrikoides flagella algae, and the experimental tanks were made with a 250 mm inner diameter, 1000 mm long, and 5 mm thick round acrylic baths. The sample intake was made with a circular acrylic tube at the position of 900㎜ to increase the reproducibility of sampling.The samples were taken at intervals of 0, 10, 30, and 60 minutes for each time period. Averaged.

In conclusion, the effect of the red tide removal material used in the present invention is to use the refined processed loess rather than using the natural loess as it can reduce the spread of the loess to the seawater and preserve the marine ecosystem and preserve the marine life. will be.

In addition, the particle size adjusted by the cumulative distribution weight in the range of 1 ~ 500㎛ of powder milled powder loess improved the red tide removal efficiency more than the particle size adjusted by the composition of other particle size. Experiments at 1000 ℃ showed the highest red tide removal efficiency near 600 ℃.

In addition, when the red tide removal rate was observed while varying the amount of addition of natural materials from 1 to 7 at the optimum particle size distribution and high temperature drying temperature, the highest efficiency was obtained when 5 to 7 was added. Experimental results obtained the maximum red tide removal efficiency when added.

The red tide preventing agent for treating marine red tide organisms of the present invention is sufficiently dispersed and dispersed in seawater to settle and remove red tide organisms by sedimentation, so that the toxic red tide can be sufficiently removed within 30 minutes to one hour to maintain a stable seabed ecosystem. This study was designed to obtain the effect of preserving aquatic organisms, and the red tide removal rate according to particle size, high temperature and drying temperature of ocher powder, and red tide removal rate according to the amount of commercial natural minerals added to the powder ocher. Therefore, it is effective to obtain the maximum red tide removal by obtaining the appropriate range of the optimal condition.

Claims (4)

Powder loess (temperature condition 100 ~ 1000 ℃, crushing particle size condition; 1 ~ 1500㎛) is used as an adsorbent, and additives such as slaked lime and tourmaline, which are natural minerals, 1 to 7 by weight) red tide microorganisms removal method characterized in that by removing the adsorption and aggregation of red tide organisms. The method of claim 1; Optimum condition for particle size distribution of finely divided powder loess is red tide microorganism removal method, characterized in that the range of 1 ~ 500㎛. The method of claim 1; Optimum temperature condition of the powder-ocher treated with heat treatment is 600 ℃ / 1hr, characterized in that the removal of red tide microorganisms. A mixture of 93 ~ 95 weight of powdered ocher (1 ~ 500㎛, 600 ℃) and 5 ~ 7 weight of natural minerals processed by refining process is liquefied with seawater, and red tide microorganisms are sprayed on the sea when red tide occurs. Red tide microorganisms removal method characterized in that the removal.