KR101219745B1 - Removing apparatus for algae - Google Patents

Abstract

또는 직사각체형으로 구성되고, 조류의 제거율을 극대화하기 위하여 반응조에 녹조수가 유입됨과 동시에 양전하물질과 자성분말체가 함께 투입되어 전위차법에 의해 조류와 자성분말체가 혼합된 거대한 플록이 형성되고, 반응조의 내부에 영구자석이 장착된 원판형 타입의 휠이 종축 및 횡축으로 연결되어 플록의 높은 수거율을 제공하고, 상기 휠이 체인으로 연결되어 모터의 동력에 의해 함께 구동되고, 휠 표면에 붙은 자성분말체 및 조류가 혼합된 플록이 휠이 회전하면서 휠표면에 장착된 칼날에 의해 드레인통로로 낙하됨과 동시에 체인외부에 장착된 브러시에 의해 수면위의 바지선으로 이동시키고, 반응조의 외부 상단에 부표가 장착되어, 조류가 발생된 수역을 따라 수면에 부상되어 임의대로 이동하면서 조류를 고속으로 제거할 수 있는 조류제거장치를 제공한다.The present invention collects algae on the surface of water by magnetic powder and potentiometric method while moving along the water where the algae is generated, so that the conventional method of sedimentation by ocher, removal method by flotation method, heavy metal and sodium hypochlorite, etc. The purpose of the present invention is to provide an algae removal device capable of overcoming environmental and economic problems as well as protecting the water ecosystem.
The present invention is a reactor "U" shaped

Or, it consists of a rectangular shape and green algae water is introduced into the reaction tank to maximize the removal rate of algae, and positive charge material and magnetic powder are introduced together to form a huge floc in which algae and magnetic powder are mixed by the potential difference method. Disc-type wheels equipped with permanent magnets are connected in the longitudinal and transverse axes to provide a high collection rate of flocs, and the wheels are connected in a chain to be driven together by the power of the motor, and to adhere to the wheel surface. As the wheel is rotated, the floc mixed with algae is dropped into the drain passage by the blade mounted on the wheel surface and moved to the barge on the surface by a brush mounted on the outside of the chain, and a buoy is mounted on the outer top of the reactor. A tank that removes algae at high speed while floating on the surface of the algae and moving randomly. It provides a removal device.

Description

Algae removal device {Removing apparatus for algae}

The present invention relates to an algae removal device, and more particularly, to an algae removal device that can remove algae at a high speed by using a permanent magnet while moving along the water where the algae is generated.

The demand for the use of appeals and rivers as water is increasing due to the increase in population and industrialization. However, such industrialization and urbanization have increased the pollution load on water resources, and water pollution is worsening.

On the other hand, due to the increase of public awareness about the environment, thorough water quality management is required, and the importance of proper water quality management techniques is increasing.

Due to the climate of Korea, many rains have been concentrated in summer, and many dams have been constructed to secure such heavy rains as water resources, and large appeals have been created proportionally.

Since artificial lakes created to secure water resources become stagnant waters with a longer hydraulic residence time, the concentration of nutrients such as nitrogen and phosphorus is generally increased instead of having less organic matter.

In Korea, due to the environment and abundant nutrients that are suitable for algae growth in the appeal, the ideal excessive algae growth and eutrophication are emerging as serious environmental problems, and fundamental measures are needed.

The problem caused by the increase of algae in the lake is not only the coloring of the water source but also the taste and smell caused by the secretion of the enzymes in vitro, which can lead to complaints. THMs) can threaten the health of citizens who use it as a drinking water source, and such an excess of algae causes flocculation and sedimentation in addition to economic losses such as increased maintenance costs due to deterioration of mechanical facilities and piping and mechanical functions. Increasing backwashing due to impedement, filter closures, or shorter filter paper durations is a serious obstacle to water treatment systems and can result in significant damage to maintenance in existing treatment systems.

In order to remove algae generated in freshwater lakes, the method of spraying ocher and then sedimenting it with a water spoon, and attaching a fine air generator to the water and then floating the algae together with fine air to remove algae, and copper Killing method by spraying heavy metal as a solution (Cu ²⁺ ), killing method by disinfectant such as sodium chloride (NaClO), removing by using inorganic oxide such as zeolite, by aerosol There is a method of collecting by the physical method after the injury of the algae, and the method of spraying the natural microorganisms after cultivating the natural microorganisms, but most of the methods are used to settle by a cutlery, the most commonly used method For economic reasons, it is mobilized to spray loess powder and settle at the same time as algae adsorption.

However, algae that have sunk in the water is composed of organic matter, and because the self-cleaning ability of the natural environment decreases, the microorganisms that have spoiled in the anaerobic atmosphere of the water can cause an increase in BOD and COD. As a result, there is a high possibility of secondary water pollution resulting in the destruction of the water ecosystem.

In addition, the method of removing the algae by floating the algae with the micro air after installing the micro air generating device on the cutlery has a limitation in removing algae generated in a wide range of water because only algae can be removed from the local water area. In the case of the killing method using a disinfectant such as sodium chloride (NaClO), there is a problem that can kill even the microorganisms beneficial to the water ecosystem by hypochlorite, and in the case of the method of removing using an inorganic oxide such as zeolite (under water) There is a problem similar to that of conventional loess because of sedimentation.

In addition, in the case of the killing method by spraying copper solution, there is a risk that the ecosystem is contaminated with heavy metals by the food chain, and in the case of the method of collecting by the physical method after algae injury caused by aerosol, this method is very limited in a narrow space. If possible, the method of cultivating and spraying natural organisms is likely to destroy water ecosystems such as bullfrogs.

Therefore, in order to solve the problems caused by algae, it is necessary to systematically study the fundamental causes and preventive measures for eutrophication due to the rapid growth of algae, and the field removal methods of algae generated in appeals or streams.

The present invention has been invented in view of the above, and the algae are collected in high speed by the magnetic powder and the potential difference method while moving along the water where the algae are generated. It is an object of the present invention to provide an algae removal device that can not only sufficiently overcome environmental and economic problems such as the removal method, heavy metals and sodium hypochlorite, but also protects the water ecosystem.

The algae removal device according to the present invention to continuously collect at a high speed using a permanent magnet while moving along the water body where the algae is generated,

또는 직사각체형으로 구성되고, 조류의 제거율을 극대화하기 위하여 반응조에 녹조수가 유입됨과 동시에 양전하물질과 자성분말체가 함께 투입되어 전위차법에 의해 조류와 자성분말체가 혼합된 거대한 플록이 형성되고, 반응조의 내부에 영구자석이 장착된 원판형 타입의 휠이 종축 및 횡축으로 연결되어 플록의 높은 수거율을 제공하고, 상기 휠이 체인으로 연결되어 모터의 동력에 의해 함께 구동되고, 휠 표면에 붙은 자성분말체 및 조류가 혼합된 플록이 휠이 회전하면서 휠표면에 장착된 칼날에 의해 드레인통로로 낙하됨과 동시에 체인외부에 장착된 브러시에 의해 수면위의 바지선으로 이동시키고, 반응조의 외부 상단에 부표가 장착되어, 조류가 발생된 수역을 따라 수면에 부상되어 임의대로 이동하면서 조류를 고속으로 제거할 수 있는 조류제거장치를 제공한다.
Reactor is "U" shaped

Or, it consists of a rectangular shape and green algae water is introduced into the reaction tank to maximize the removal rate of algae, and positive charge material and magnetic powder are introduced together to form a huge floc in which algae and magnetic powder are mixed by the potential difference method. Disc-type wheels equipped with permanent magnets are connected in the longitudinal and transverse axes to provide a high collection rate of flocs, and the wheels are connected in a chain to be driven together by the power of the motor, and to adhere to the wheel surface. As the wheel is rotated, the floc mixed with algae is dropped into the drain passage by the blade mounted on the wheel surface and moved to the barge on the surface by a brush mounted on the outside of the chain, and a buoy is mounted on the outer top of the reactor. A tank that removes algae at high speed while floating on the surface of the algae and moving randomly. It provides a removal device.

Referring to the advantages of the algae removal device according to the present invention.

1. A “U” shaped reaction tank is constructed to collect algae at high speed while floating along the water where the algae is generated, and the algae flows into the reactor and positively charged material and magnetic powder together. A large floe mixed with algae and magnetic powder is formed by the potentiometric method, and when the floc containing algae and magnetic powder is removed by a wheel with permanent magnets, it is suspended in algae or water generated in the water. The fine particles can be collected at high speed on the water surface and provide a clean water environment.

2. It has high efficiency and high algae collection effect at high speed while moving the water area where algae is generated at any time. Therefore, it is environmentally friendly such as conventional sedimentation method by loess, flotation method, heavy metal and sodium hypochlorite. In this way, the water ecosystem can be protected while fully overcoming economic problems.

3. Since the algae collection rate is very high with minimal attraction in the floc mixed with algae and magnetic powder according to the present invention, it is economical to remove only the magnetic powder with a magnet and replace the algae generated in the remaining water with biofuel. In addition to profits, eco-friendly new fuels can be obtained.

1 is a side view of the algae removal device according to an embodiment of the present invention
FIG. 2 is a front view of FIG. 1
3 is a schematic view showing a state in which the permanent magnet is mounted on the bird collection wheel in FIG.
4 is a perspective view of FIG. 1
Figure 5 is a photograph showing a vertical algae removal reaction apparatus performed for an embodiment of the present invention
6 is a side view showing a brush mounted on the outside of the chain in FIG.
FIG. 7 is a front view of FIG. 6

Prior to presenting the embodiments of the invention for implementing the technical idea of the present application by showing the drawings, the terms or words used in the specification or claims of the present application should not be interpreted limited to the ordinary or dictionary meanings. The scope of the present application should be construed as meanings and concepts consistent with the technical spirit of the present invention, and the examples described herein are merely exemplary embodiments of the present invention and do not represent all of the technical ideas of the present invention. It is to be understood that there may be various equivalents and variations in place of them at the time of the present application.

In addition, the following contents presented by the applicant for applying the technical idea of the present application only shows the embodiments applied by the applicant as a means for achieving the object of the invention, for example, at the enterprise level having a company-affiliated research institute, etc. It will be appreciated that various methods and means of obtaining the results may be employed, but the technical idea of the present invention is that the algae removal device has a rectangular (or " U ”shaped), and the green algae water is introduced into the reactor and at the same time, positive charges and magnetic powders are supplied together to form huge flocs in which algae and magnetic powders are mixed by the potentiometric method. A wheel equipped with a permanent magnet therein is connected to the longitudinal axis and the horizontal axis through the chain 17 and is connected to the motor. Driven, flocs mixed with algae and magnetic powder are attached to the wheel surface by magnetic force, a blade is mounted on the wheel surface to remove the attached algae, and the drain blade is mounted by the mounted blade 14. It will be appreciated that having a means for mounting a brush on the outside of the chain in order to move it to a barge on the water at the same time as it falls, it will be appreciated that it is included in the technical idea herein.

Hereinafter, the technical idea of the present invention will be described with reference to the drawings.

1 is a side view showing a bird removal apparatus according to an embodiment of the present invention, Figure 2 is a front view of FIG.

The present invention can easily be applied to the fields of coal, cement, sand, wood, feed, foundry sand, recycling, beneficiation, etc. as the iron component in the mixture is easily separated through low equipment costs and operating costs, as well as the surface of the magnetic powder When a positively charged substance is provided to the magnetic powder, the magnetic powder is surface-modified to have a positive charge, and floating substances, green algae, and red tide, which are negatively charged on the positively charged magnetic powder, are easily attached by the potential method. The present invention relates to an algae removal device that can remove algae and a magnetic floc containing a large floc (floc) after the formation of a high floc on the water surface using the properties of the magnet 12.

The present invention includes a reactor 10 for removing algae while moving along the water where algae is generated.

The reaction vessel 10 is connected to the rear of the ship or ship, and moves along the body of water generated algae while floating on the water surface.

Water containing algae or suspended matter (eg, green algae water 23) is supplied to the reactor 10 by a fixed pump mounted on a ship or a ship.

In addition, the green algae water 23 is introduced into the reaction tank 10 and the positive charge material and the magnetic powder are supplied together to form huge flocs in which algae and magnetic powder are mixed by the potentiometric method.

The plurality of algae collecting wheels 11 are disposed in the transverse direction and the longitudinal direction by the plurality of rotation shafts 16, and the rotation shafts 16 are disposed in the width direction on the upper portion of the reaction vessel 10. Installed at regular intervals, each of the rotating shaft 16 is rotated while being supported by a plurality of bearings (18).

In addition, each of the rotating shafts 16 is mounted with a sprocket 19, each of the sprockets 19 is connected by a chain 17, one of the plurality of rotating shafts 16 of the rotating shaft 16 is a reaction tank (10) Is connected to the motor 13 and the chain 17 installed on the outside of the chain 13, the chain 17 and the sprocket 19 is rotated as the motor 13 is driven to transmit a rotational force to the rotating shaft 16, the rotating shaft ( 16) is rotated while the bird wheel 11 for rotation.

The algae collection wheel 11 is installed in the vertical axis in the vertical direction and rotates with the rotating shaft 16, the permanent magnet 12 is mounted inside the algae collection wheel 11, the reaction tank 10 The floc mixed with the algae and the magnetic powder contained in the inside is attached to the side of the algae collection wheel 11 by magnetic force.

The blades 14 are inclined on both sides of the algae collection wheel 11 so that the flock attached to both sides of the wheel 11 is dropped from the wheel 11 when the wheel 11 rotates.

At this time, the blade 14 is installed in the longitudinal direction on the upper end of the reaction tank 10 to be in close contact with both sides of the algae collection wheel (11).

The lower end of the blade 14, the drain passage 15 is formed in the longitudinal direction at the upper end of the reaction tank 10, the floc is discharged through the drain passage (15).

At this time, the floc mixed with the algae and the magnetic powder discharged through the drain passage 15 is moved to the barge 22, the brush 20 is connected to the chain 17 connecting the respective rotation shaft 16 By being attached, the brush 20 can be moved while sweeping the flocs dropped to the drain passage 15 by the chain 17 while being in close contact with the drain passage 15 to be discharged to the barge 22. That is, the floc separated from the algae collection wheel 11 by the blade 14 and dropped into the drain passage 15 is moved along the drain passage 15 by the brush 20 installed in the chain 17. It is to be discharged to the barge (22).

Buoys 21 are provided on both sides of the reactor 10, and the buoys 21 are floated on the surface of the reactor to move the water, and as a result, algae generated in the water rotate in the reactor 10. The permanent magnet 12 of the bird collecting wheel 11 is removed above the barge 22 on the water surface.

The permanent magnet 12 to be mounted in the disc-shaped wheel 11 equipped with the permanent magnet 12 shown in FIG. 3 is a permanent magnet of a ceramic of barium (Ba) or strontium (Sr) ferrite, One or more permanent magnets selected from permanent magnets such as Rare-earth permanent magnets of Samarium-Cobalt (Sm-Co) or Nedium (NdFeB), Alico permanent magnets, rubber magnets, and plastic magnets Although it can be used, the rare earths of samarium-cobalt (Sm-Co) or neodymium (NdFeB), which have a high strength of the magnet, because they receive a lot of water resistance when applying magnetic force from the outside to separate fine magnetic powders in water (Rare-earth) It is advantageous to use permanent magnets.

The algae removal reaction tank 10 is equipped with a device for removing algae in the reaction tank 10, to move freely on the surface of the algae in order to increase the removal rate of the algae, it is preferably composed of a U-shaped algae removal reaction tank ( 10) Buoy 21 should be mounted on the outer top of the U-shaped reaction tank 10 so that the algae removal reaction tank 10 is floating on the surface of the water to move the water.

The positive charge material is a material having the ability to neutralize the charge of the colloid to agglomerate suspended matter or algae and the crosslinking ability to bind the colloidal particles to each other, the former should be an ion having a reverse charge with the agglomerated colloid, the latter is a polymer It must be a substance.

의 조류제거 반응조(10)에 유입되는 조류수는 유입되는 조류수에 포함된 부유물질이나 조류의 농도에 따라 알루미늄 내지는 철이 0.5 내지는 25 ppm의 농도가 유지되도록 공급되는 것이 바람직한 바, 알루미늄 내지는 철의 농도가 0.5 ppm 이하의 농도로 유지할 경우 음전하를 띠고 있는 조류나 부유물질들이 다량 존재함에 따라 응결 및 응집현상이 일어나지 않아 본 발명의 기술적 사상에 접근할 수 없으며, 알루미늄 내지는 철의 농도가 25 ppm 이상의 농도가 유지될 경우 철 또는 알루미늄의 무기응집제가 강산을 띠고 있음에 따라 처리 후의 녹조수(23)의 산도가 산성을 띠고 있어 담수호의 수질생태계 보호를 위해서는 반드시 중화를 시켜야 한다는 단점을 가지고 있을 뿐만 아니라, 처리 후 과잉으로 공급된 알루미늄 또는 철의 성분이 용출될 가능성이 높아져 알루미늄 또는 철 중금속 오염에 의한 수질을 악화시킬 가능성이 크기 때문에 해수면 또는 담수호에 발생된 조류를 정화하기 위해서는 상기 농도의 무기 양전하물질(무기 응집제)를 공급하는 것이 바람직하다. Therefore, it is preferable to use a flocculant with these two conditions. In general, the positively charged materials widely used are metal salts or natural polymers, such as aluminum salts, iron salts and chitosan, which are easily hydrolyzed to form hydroxide polymers of positive (+) charges, and more specifically, polyaluminum chloride (PAC). ; Poly Aluminium Chloride), aluminum sulfate _{(Aluminium sulfate: Al 2 (SO} 4) 3 · 18H 2 O), ferrous sulfate _{(ferrous sulfate: FeSO 4 · 7H} 2 O), ferric sulfate (ferric sulfate: Fe ₂ (SO ₄ ) ₃ ), Ferric Chloride (FeCl ₃ ), Calcium Hydroxide (Ca (OH) ₂ ), Calcium Oxide (CaO), Sodium Aluminate: Na ₂ Al ₂ O ₂ ), one or more positively charged materials (inorganic coagulants) selected from chitosan, U-shaped

Algae water flowing into the algae removal reaction tank 10 of the aluminum or iron is preferably supplied to maintain a concentration of 0.5 to 25 ppm according to the concentration of suspended solids or algae contained in the incoming algae, aluminum or iron If the concentration is maintained at a concentration of 0.5 ppm or less, due to the presence of a large amount of algae or suspended matters that have a negative charge, condensation and aggregation do not occur, and thus the technical idea of the present invention cannot be accessed, and the concentration of aluminum or iron is 25 ppm or more. When the concentration is maintained, as the inorganic coagulant of iron or aluminum has a strong acid, the acidity of the algae water 23 after treatment is acidic, so it must be neutralized to protect the water ecosystem of freshwater lakes. , It is highly likely that the excess components of aluminum or iron that are supplied after treatment are eluted. In order to purify the algae generated at sea level or freshwater lake, it is preferable to supply the inorganic positive charge substance (inorganic flocculant) of the above concentration because it is highly likely to deteriorate the water quality due to low aluminum or iron heavy metal contamination.

In the case of chitosan, which is a natural polymer among the positively charged materials, a material obtained by deacetylation of chitin contained in crabs, crayfish, and shrimp shells in a range of 60% or more, preferably 80 to 98%, may be used.

At this time, the molecular weight of the chitosan is preferably in the range of 10,000 to 250,000, preferably in the range of 10,000 to 100,000, more preferably in the range of 30,000 to 70,000. If the molecular weight is less than 10,000, since the potential of the positive charge is lowered when reforming the surface of the magnetic complex, a small floe may be provided by the potentiometric method for the algae or suspended matter having a negative charge. It is advantageous to maintain the above range because a problem arises that the efficiency of workability decreases due to viscosity swelling during dissolution.

The flocculent aid is added to prevent floc (Floc) is not well formed after using the inorganic flocculant as a positive charge material to prevent the removal rate of algae according to the present invention, to increase the sedimentation rate or to form a large floe In the present invention, an acrylamide-based polymer coagulant or a flocculent aid is used in the present invention to form a large floc by forming a huge network inside the algae removal reaction system.

The flocculent aid is added when the floc is not well formed or settled or floated after using the flocculant to increase the settling speed or to form a large floe, and can be divided into inorganic coagulants and organic coagulants. In the case of organic coagulants, agar, starch and gelatin may be included. Inorganic coagulants include clay and activated silica.

The polymer coagulant and the coagulant aid are preferably supplied after the inorganic coagulant is added. The amount of the coagulant and the coagulant aid may vary depending on the shape or concentration of the green algae or the suspended solids contained in the green algae water 23, but the concentration range is 0.1 to 2.5 ppm. When supplied with the present invention, the suspended solids and algae in the green algae (23) can be easily collected on the water surface.

The magnetic powder is generally used in the art, and is not particularly limited, and any magnetic powder may be used.

In the present invention, in particular, a hard or soft type of ferrite, magnetite (Fe ₃ O ₄ ) or iron (Fe) powder is used, but preferably, the price is low, and the production of fine powder It is preferable to use a magnetite or soft type ferrite which is easy, has excellent acid resistance, and is convenient for recycling the magnetic composite, and the permanent magnet 12 is mounted by the blade 14 to the algae in which floc is formed by the positively charged material. Detachable from the surface of the algae collection wheel 11 is moved to the barge 22 through the drain passage (15).

Particles of the magnetic complex are preferably a fine powder that can be sized to widen the specific surface area that can be in contact with algae or suspended matter in water, specifically 0.1 ㎛ ~ 1 mm range, preferably 0.1 ㎛ ~ 100 ㎛ It is better to maintain the range, more preferably 0.1 to 5 μm. If the size of the powder particles is less than 0.1 μm, the specific surface area becomes larger so that algae or suspended solids in the water may form flocs by the positively charged material. However, it is inconvenient to work due to the dust caused by particulates during the process of removing algae, and is generally connected to the U-shaped algae removal reactor 10 in the vertical and horizontal axes as the resistance to water increases. There is a problem that the possibility of solid and liquid separation on the surface of the wheel 11 on which the magnet 12 is mounted may be thin, and the fine particles of the magnetic composite are produced. It requires a lot of manufacturing costs, and if it exceeds 1 mm, the specific surface area is small and the sedimentation speed is high, so the probability of adsorption in contact with the floating material in water is relatively low. In order to effectively remove algae and suspended solids, a magnetic powder having the size of the proposed particle is preferable.

Hereinafter, the present invention will be described in more detail with reference to the following examples, which are not intended to limit the present invention.

Example 1: Manufacture of solid-liquid separator by green algae removal system and magnet 12

Figure 3 is a schematic diagram showing a state in which the permanent magnet is mounted on the bird collection wheel in FIG.

As shown in FIG. 3, a neodymium permanent magnet 12 is inserted into a cylindrical disk to produce a wheel 11 equipped with a magnet 12, and the reactor 10 is made of U-shaped stainless steel. The solid and liquid separators of the magnetic powder by the magnets 12 were manufactured by connecting with the chains 17 so as to be connected to the vertical axis in a straight line and operated together with the drive shafts of the motor 13.

Figure 5 is a photograph showing a vertical algae removal reaction apparatus for an embodiment of the present invention.

In order to carry out an embodiment of the present invention, as shown in FIG. 5, an automatic pH adjustment device 30 is attached so that acid and alkali can be controlled by a metering pump, and magnetic powder and green algae water are attached. (23) is equipped with a flow meter so as to quantitatively flow into the green algae removal reactor, to be able to process up to 5 tons / hour treatment capacity of the green algae water (23) per hour, and to produce a plurality of reaction water tank (31) in a cascade The green algae water 23 is introduced into the reaction tank on the left side having the largest height, and then the green algae water 23 is sequentially moved from the upper reaction tank 31 to the lower reaction tank 31. To increase the reaction time of the magnetic powder and green alga of the), and to prevent the sedimentation of the magnetic powder having a high specific gravity, it is to provide a bubble (Bubble) at the bottom of the reaction tank (31).

The reaction tank 31 of FIG. 5 is a tank for supplying the magnetic powder and the positive charge material to the green algae water 23 so that the algae and the positive charge material and the magnetic powder contained in the green algae water 23 react and aggregate to form flocs. 5, the floc formed in the reaction tank 31 of FIG. 5 is supplied to the reaction tank 10 of FIGS. 1, 2, and 4, and the algae generated in water using the permanent magnet 12 is applied to the surface of the wheel 11. After attaching, the floc attached to the surface of the wheel 11 by the blade 14 is detached and moved to the barge 22 through the drain passage 15.

FIG. 6 is a diagram illustrating an example in which the brush 20 is mounted outside the chain 17 in FIG. 1, and FIG. 7 is a front view of FIG. 6.

As shown, the brush 20 is attached to the outer surface of the chain 17, the floc mixed with algae and magnetic powder dropped in the drain passage 15 while the brush 20 moves along the chain 17 To the barge 22.

Example 2

It was introduced at 2.5 tons per hour using the algae removal reaction apparatus shown in FIG. 5, and the magnetic powder was introduced by the metering pump so that the magnetite powder (Bowang Chemical Co., Ltd.) became 0.05% by weight. At this time, chitosan (Showa: Japan) dissolved in acetic acid is supplied as a positively charged material so that the concentration of chitosan in the algae water 23 is 10 ppm, and is supplied by a metering pump. The pH of the water 23 is adjusted to 6.8, and then the green algae water 23 treated by the vertical algae removing reaction apparatus is discharged through the algae removing system of the present invention to produce a mixture of green algae and magnetic powder. Was removed, and the results of analysis before and after treatment (Control) were confirmed.

Example 3

PAC (polyaluminium chloride: Kyungdeok Chemical) was used as the positive charge material, and was carried out in the same manner as in Example 2 except that 10 ppm of Al was maintained in the algae water (23).

Example 4

 Alum (aluminum sulfate: Dongyang Steel Chemical) was used as the positive charge material, and the same procedure as in Example 2 was performed except that 10 ppm of Al was maintained in the algae water 23.

Example 5

Ferric sulfate (Dongyang Steel Chemical) was used as the positive charge material, and was carried out in the same manner as in Example 2 except that 10 ppm of Fe was maintained in the algae water 23.

Example 6

Magnetic powder was used in the same manner as in Example 2 except for using isotropic ferrite (Toda Korea) instead of magnetite.

Comparative Example 1

The same process as in Example 2 was carried out except that ocher was added in an amount of 0.05 wt% based on the green algae instead of the magnetic powder and the positive charge material.

In the analysis items of Examples 1 to 6 and Comparative Example 1, chlorophyll a and suspended solids were carried out by the water pollution process test method, and the turbidity was performed by a turbidimeter of L. MOTTE 2020e / TC 3000E. Table 1 shows.

As shown in Table 1, when spraying ocher, which is a conventional method, in green algae water 23 as in Comparative Example 1, the reaction rate was very slow, so that chlorophyll-a was somewhat removed, but in the case of suspended matter and turbidity, 23), while the particles of ocher appeared to be much higher than the raw water as the suspended state, the algae removal device of the present invention as a result of the flocculant and magnetic powder to provide a positive charge as shown in Examples 2 to 6 (23) It can be supplied to the floc to form floc by flocculation by the potentiometric method, and finally, the external magnetic force is provided to remove the floc containing green algae and magnetic powder, thereby providing clean water.

10 reactor 11: algae collection wheel
12 permanent magnet 13 motor
14: blade 15: drain passage
16: axis of rotation 17: chain
18: bearing 19: sprocket
20: brush 21: buoy
22 barge 23 green algae

Claims (6)

A reaction tank 10 in which algae move along the generated water, green algae water 23 is introduced and at the same time a positive charge material and magnetic powder are added to form a floc in which algae and magnetic powder are mixed in the water by a potential difference method;
The magnetic powder is mounted on the surface so that the permanent magnet 12 is mounted, rotatably installed by the rotating shaft 16 inside the reactor 10, the bird collection wheel for collecting the floc formed in the water above the water surface (11);
A motor 13 for providing a driving force to the bird collecting wheel 11 to rotate the bird collecting wheel 11;
A blade 14 disposed close to both surfaces of the bird collecting wheel 11 and detaching a floc from the surface of the rotating bird collecting wheel 11;
A drain passage 15 formed at the lower portion of the blade 14 to allow the floc dropped by the blade 14 to be transferred to the barge 22;
A chain 17 for transmitting power from the motor 13 to the bird collection wheel 11; And
A brush (20) installed in the chain (17) for conveying the floc dropped in the drain passage (15);
It includes, a plurality of algae collecting wheel 11 is installed in the plurality of rotary shaft 16 in the reaction vessel 10 is disposed in the transverse direction and the longitudinal direction, the drain passage 15 is the length of the reaction tank 10 Is formed to extend in the direction, and the floc dropped into the drain passage 15 by the blade 14 is moved along the drain passage 15 by the brush 20 installed in the chain 17 to be discharged to the barge 22. Algae removal device, characterized in that to make.
delete The permanent magnet 12 embedded in the algae collection wheel 11 is a ceramic permanent magnet of barium (Ba) or strontium (Sr) ferrite, samarium-cobalt (Sm-Co) or neo. The algae removal device, characterized in that at least one permanent magnet selected from Rare-earth permanent magnet, Alico permanent magnet of NdFeB.
The method of claim 1, wherein the positive charge material is poly aluminum chloride (PAC; Poly Aluminum Chloride), aluminum sulfate (Al ₂ (SO 4) _{3 18} H ₂ O), ferrous sulfate (FeSO ₄ · 7H ₂ O), Ferric Sulfate (Fe ₂ (SO ₄ ) ₃ ), Ferric Sulfate (Ferric Chloride: FeCl ₃ ), Calcium Hydroxide (Ca (OH) ₂ ), Calcium Oxide : CaO), sodium aluminate (Sodium Aluminate: Na ₂ Al ₂ O ₂ ), chitosan (Chitosan) Algae removal device, characterized in that at least one material selected.
The algae removal device according to claim 4, wherein the positive charge material is supplied to water containing algae and suspended matter so as to maintain a concentration of 0.5 to 25 ppm.
The algae removing apparatus according to claim 1, wherein the magnetic powder is any one selected from a hard or soft type of ferrite, magnetite (Fe3O4) and iron (Fe) powder.

Images