KR20130113831A - Apparatus for the removal of plankton and pollutants in a stagnant stream channel - Google Patents

Abstract

PURPOSE: A device for removing the green algae from the stagnant water and improving the water quality is provided to maximize the oxidation and sterilization efficiency of the organic compounds, and removing of the green algae from the stagnant water of the lake and the river. CONSTITUTION: A device for removing the green algae from the stagnant water and improving the water quality comprises an underwater oxidation cask (3). The underwater oxidation cask is combined through multiple fixture pieces (2) with the buoy (1). An inlet (4) is formed in the upper end of the underwater oxidation cask in order that the surface layer water of the stagnant water of the river and the lake is flowed in. An oxidation system and a sterilizer of plasma, ozone, ultrasonic, ultraviolet ray are installed inside the underwater oxidation cask. The mixed solution in which the deep water which has low temperature and the processed water inside the oxidation cask are mixed is discharged to the outlet (6) by using an impeller (5) which receives the rotatory power of the motor (7) in the lower part of the underwater oxidation cask and rotates. [Reference numerals] (AA) Water surface

Description

Apparatus for the Removal of Plankton and pollutants in a stagnant stream channel}

The present invention is located at a certain depth from the surface of the water by buoy, and by installing the oxidation and sterilization apparatus of plasma, ozone, ultrasonic wave, ultraviolet rays in the amber of the water, the removal of algae in the stagnant water of rivers and lakes, oxidation of organic matters and The sterilization efficiency can be maximized, and the rotating impeller allows the mixed water mixed with the treated water and the low temperature deep water to flow below the surface water due to the difference in density. Green algae are removed by continuous suction, and the mixture of deep water and surface water is excellent in solving stratification problems by mixing and vertical circulation. Also, organic matter in stagnant water is oxidized by the oxidizing device within a limited volume in the oxidizing tank. Algae removal and water quality improvement system in stagnant waters It relates.

In general, stratification occurs in summer, when the temperature is high, and in rivers, lakes, lotus roots, and ports, the surface is called the warming layer (epilimnion) or surface layer, and the middle part is the thermocline or weak layer. The lower part of the stagnant part is divided into the hypolimnion or deep water layer. When the stratification occurs, the surface water is almost uniform in temperature due to mixing by wind, wave, etc., but the weak layer is a water layer with a severe temperature change, and water mixing is hardly caused by the wind. Therefore, surface water becomes aerobic due to high dissolved oxygen concentration in contact with air on the surface of the water, while lower dissolved oxygen concentration becomes lower anaerobic in the lower part of the layer, causing deterioration of water quality, causing eutrophication and proliferating plankton in the water. By. Eventually, algae problems occur, which makes it difficult for water treatment today.

The introduction of algae into the water purification plant deteriorates the taste and smell of the water and causes problems in the filtration system. In order to remove this, side effects such as generation of THM may be caused by chlorine or chemical treatment in water.

However, if water density or temperature changes depending on the depth in a stagnant body of water, the vertical circulation of water occurs in the vertical direction, and the surface water with high dissolved oxygen concentration is transferred to the deep water layer, and the anaerobic state of the deep water layer disappears to activate the water ecosystem. Midnight action takes place.

Therefore, in order to improve the stratification phenomenon, a forced circulation method (Forced circulation) or forced injection of oxygen (Injection of oxygen) is used, but the depth of the deep water and the surface layer Because of the low density of the water, the deep water that rose to the surface immediately settles to the deep part, and the injected air rises directly into the bubble, so it cannot diffuse far away, and the effective radius is low, so the efficiency is low. Driving force was required.

In addition, oxidation by dissolved oxygen is not sufficient to oxidize organic matter or algae (including green algae, red tide, etc.) contained in water during summer or to sterilize pathogens.

Thus, Patent Registration No. 10-0785703 (water quality improvement device) dated December 07, 2007 was proposed.

The main body casing includes an upper opening into which surface water flows in, a lower opening into which deep water flows in, and an intermediate opening in which surface water and deep water are mixed and discharged into a temperature gradient layer;

A motor for generating a driving force;

A flow guide which rotates by a driving force by the motor and guides the surface water and the deep water flowing through the upper and lower openings in the direction of the middle opening;

A mixing and diffusion impeller fixed to the flow guide to mix the surface water and the deep water and discharge the mixed water into the intermediate opening;

An oxidizing and sterilizing apparatus including an ultraviolet apparatus, an ozone injecting apparatus, and an ultrasonic generator, which is installed inside or around an inlet of the surface water inflow conduit to oxidize and sterilize the surface or deep water;

A settling part existing inside the main body outer cylinder and separating and precipitating the organic matter and other contaminants contained in the surface water or the deep water oxidized and sterilized using the centrifugal force of the vortex generated by the rotation of the mixing and diffusion impeller;

It comprises a discharge pipe extending from the edge of the settling portion to discharge the organic matter and other contaminants over the water surface by mixing the low-density water and the high-density lower water through the induction pipe by the rotation of the centrifugal impeller It diffuses into a similar middle layer of density and diffuses water with less power, while oxidizing and disinfecting ozone, ultrasonic waves and ultraviolet rays is installed in the space inside the induction pipe to maximize the efficiency of oxidizing and disinfecting organic matter and algae (algae removal). It was possible to provide an apparatus for improving the water quality, and furthermore, by using the centrifugal force of the vortex generated around the rotating centrifugal impeller, it was possible to separate the solids in the water and discharge them to the outside.

However, in the conventional water quality improvement apparatus as described above, the surface water and the deep water are mixed in the mixing and diffusion impeller and discharged only to the water surface through the discharge pipe, so that the effect of the mixing of the surface water and the deep water is halved and the temperature change in the surface water. There was a problem that occurs badly.

The present invention, in view of the problems of the prior art as described above, is located at a certain depth from the surface by buoys by installing an oxidation and sterilization apparatus such as plasma, ozone, ultrasonic waves, ultraviolet rays, etc. It is an object of the present invention to provide an apparatus for removing green algae and improving water quality in a stagnant body of water to maximize the efficiency of removing green algae and oxidizing and disinfecting organic matters in the stagnant waters of lakes and lakes.

In addition, the present invention is the mixed water mixed with the treated water and the low temperature deep water by the rotating impeller is sent below the surface water due to the difference in density, the surface water with a lot of Frankton is continuously sucked into the oxidation tank to remove the algae Of course, the mixing and vertical circulation of deep and surface waters are excellent for solving stratified phenomena, and organic matters in stagnant water are also oxidized by the oxidizing device within a limited volume in the barrel, so that the oxidation efficiency is further improved. The purpose.

Coupled through buoys and fixing pieces, the inlet is formed at the upper end of the underwater amber (chamber) located at a certain depth from the surface of the water to allow the surface water in the stagnant waters of the rivers and lakes to flow in,

The oxidation and sterilization apparatus of plasma, ozone, ultrasonic wave, and ultraviolet rays are installed inside the underwater oxidizing tank to remove the algae in the stagnant waters of rivers and lakes, and to maximize the oxidation and sterilization efficiency of organic matters.

The impeller rotating at the bottom of the underwater tank allows the mixed water mixed with the treated water and the low temperature deep water to be sent under the surface water by the difference in density, so that the surface water with much frankton is oxidized by the rotation of the impeller. As it continues to be sucked into the barrel, the green algae are removed, and the mixture of deep and surface waters and the vertical circulation are excellent for solving the stratification problem. In addition, organic substances in the stagnant water are oxidized by the oxidizing device within a limited volume in the barrel. As a result, the oxidation efficiency is further improved.

Surface water in the stagnant waters of rivers and lakes is introduced through inlets formed through the buoys and the fixed pieces, which are formed at the upper end of the oxidizing tank located at a certain depth from the water surface.

The oxidation and sterilization apparatus of plasma, ozone, ultrasonic wave, and ultraviolet rays are installed inside the barrel of the water to maximize the removal of algae from the stagnant waters of rivers and lakes, and the oxidation and sterilization efficiency of organic matters.

The impeller rotating at the bottom of the underwater tank allows the mixed water mixed with the treated water and the low temperature deep water to be sent under the surface water by the difference in density, so that the surface water with much frankton is oxidized by the rotation of the impeller. Green algae are removed as they are continuously sucked into the barrel.

In addition, the mixture of deep water and surface water is excellent in solving stratification problems due to the mixing and vertical circulation, and the organic matter in the stagnant water is also oxidized by the oxidizing device in a limited volume in the oxidizing tank, thereby improving the oxidation efficiency.

1 is a state diagram illustrating the stratification phenomenon of water in summer rivers and lakes.
Figure 2 is a schematic diagram showing a configuration according to an embodiment of the present invention.
Figure 3 is a schematic diagram showing a configuration according to another embodiment of the present invention.
Figure 4 is a schematic diagram showing a configuration according to another embodiment of the present invention.
5 is a schematic diagram showing a configuration according to another embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In the summer, the stratification is formed by water having different densities. As shown in FIG. 1, since the density of water in the temperature gradient layer is less than that of the stagnant layer and is higher than that of the warm upper layer, the temperature gradient layer is It exists above the congestion layer.

If medium temperature (density) is stacked between hot and dense cold water, medium temperature water will spread widely between hot and cold water without applying force from the outside, like oil between air and water. do.

Therefore, as water of medium temperature spreads widely between hot and cold waters without applying force from the outside, when the surface water and the water of the deep water layer are guided and mixed only with the temperature gradient layer, the mixed water becomes the temperature gradient layer. It is the same as the density of water in the range, so that it is widely spread, allowing the surface water and anaerobic deep water with high dissolved oxygen concentration to be widely circulated with little energy (power).

FIG. 2 illustrates a device for removing algae and improving water quality in a stagnant body of water that can be widely circulated and oxidized and sterilized by mixing surface water and deep water with little power.

The inlet port 4 is formed at the upper end of the underwater oxidation chamber 3 which is coupled through the buoy 1 and the plurality of fixing pieces 2 and is located at a constant depth from the water surface to form surface water in the stagnant water of rivers and lakes. To let in,

The oxidation and sterilization apparatus of plasma, ozone, ultrasonic wave and ultraviolet ray (not shown) are installed inside the underwater oxidation barrel 3 to remove green algae from the stagnant waters of rivers and lakes, and to maximize the oxidation and sterilization efficiency of organic matters. and,

By the impeller 5 which receives the rotational force of the motor 7 at the lower end of the underwater oxidation tank 3 and rotates, the mixed water in which the treated water and the low temperature deep water are mixed is discharged to the discharge port 6. It is configured to be sent below surface water due to density difference.

Green algae removal and water quality improvement apparatus in the stagnant water of the present invention configured as described above,

The buoy 1 floating in the water and the water-chamber 3 coupled through the plurality of fixing pieces 2 are positioned at a constant depth from the water surface.

An intake port 4 is formed at the upper end of the underwater amber 3 to allow surface water in the stagnant water of rivers and lakes to flow.

The oxidation and sterilization apparatus of plasma, ozone, ultrasonic wave and ultraviolet ray (not shown) are installed inside the underwater oxidation barrel 3 to remove green algae from the stagnant waters of rivers and lakes, and to maximize the oxidation and sterilization efficiency of organic matters. do.

By the impeller 5 which receives the rotational force of the motor 7 at the lower end of the underwater oxidation tank 3 and rotates, the mixed water in which the treated water and the low temperature deep water are mixed is discharged to the discharge port 6. By sending the water below the surface water due to the density difference, the surface water with much frankton is continuously sucked into the oxidizer tank by the rotation of the impeller, and green algae are removed. In addition, since the organic material in the stagnant water is oxidized by the oxidizing device in a limited volume in the oxidizing barrel, the oxidation efficiency is further improved.

The above-mentioned underwater barrel 3 is a built-in sterilizer for generating plasma, ozone, ultrasonic waves and ultraviolet rays,

The plasma of the sterilizer is

It is supplied from the plasma generator, and the plasma composed of anion gas and ozone deodorizes and decolorizes while decomposing pollutants.

Ozone generator of sterilizer,

When ozone is applied to water treatment, it must be dissolved in the wastewater, and the solubility of ozone is about 10 times higher in oxygen, but the solubility varies greatly depending on the dissolving device. Less than 50%.

Dissolved ozone is very unstable (about 20-30 minutes at a half-life of 20 ° C), allowing it to decompose into oxygen and water in a short time.

Ozone can be classified into two types: direct reaction of ozone molecules and indirect reaction of OH radicals caused by autolysis.

The OH radicals produced by the autolysis of ozone have a higher potential difference than ozone and react evenly with almost all organic materials at high speed, which is the most important reason for applying ozone to wastewater treatment.

The method for promoting organic decomposition by artificially accelerating the autolysis of ozone to increase the production of OH radicals is called Advanced Oxidation Process (AOP), which is a frequently used method of increasing pH, administering H2O2, ultrasonic radiation And irradiation of ultraviolet rays.

Recently, much research has been conducted on the ability of oxidizing organic matters and reducing the amount of ozone used.

The ultrasonic generator of the sterilizer is

Ultrasound is an inaudible frequency with a frequency above about 20,000 Hz that cannot be felt by the human ear. When ultrasonic waves are radiated into a liquid, ultrasonic waves vibrate the liquid with tens of thousands of short pulses every second. Negative pressure zones in the liquid create a low boiling point due to this low pressure, which creates a bubble bubble. This phenomenon is called cavitation.

However, after half cycle, i.e., when the input frequency is 20KHz, the pressure increases rapidly between 1 / 40,000 seconds and changes to positive pressure, causing the bubble to explode inside and release powerful energy. Although very small, the energy intensity is extremely strong at 10,000 pounds per square inch and about 20,000 degrees Fahrenheit, which entails chemical and thermal effects due to the breakdown of the bubbles, which promotes chemical reactions and increases dispersal, resulting in liquids and contaminants around the bubbles. It causes chemical change of and high reactivity is generated by this reactivity.

For example, crushing and dispersing high-concentration organic matter, polymers, etc. break the bond between atoms, hydroxyl radical, which is a highly reactive oxide. Hydrogen peroxide is generated in a large amount to promote the decomposition and removal of contaminants, so it may belong to a high oxidation method, but the physical energy is strong, so that the high concentration of organic matter, which is a contaminant mass, is broken down and the microorganisms are sterilized.

UV generator of the sterilizer,

Oxidation by ultraviolet light is according to Chick's law dN / dt = KN. Where N is the number of microorganisms, t is the contact time, and K is the microbial lethality coefficient, which is proportional to the light intensity, and the light intensity decreases as it passes through the absorption medium.

That is, the initial light intensity gradually decreases through the absorption media. Furthermore, the ultraviolet wavelength for oxidation and sterilization is 200 ~ 300nm, which is extremely short compared to general visible light and absorbed well by the medium, so the effective distance from the UV lamp in the air is tens of centimeters, and even shorter in water. Since they are not even cm (varies with water turbidity), these UV lamps are mainly used in devices (eg water purifiers, aquariums) that want to sterilize low turbidity (high transparency) in small, confined spaces.

Microorganisms are also oxidized in the process of oxidizing organic substances by the plasma, ozone, ultrasonic waves and ultraviolet rays. So, in a sense, sterilization and oxidation happen at the same time. This is because microorganisms are largely organic matter.

Furthermore, when the ultraviolet, ozone, and ultrasonic waves are sterilized, the contact time required in water is so short that most microorganisms are killed in less than a few seconds at a sufficient concentration (or strength, strength).

Therefore, the application of these advanced treatment techniques (ultraviolet, ozone, and ultrasonic methods), which are commonly used in wastewater treatment, to improve appeal or lotus root, marine green algae, red tide, and water quality, is expected to be effective. Since it is difficult to apply to a wide space indefinitely rather than a limited narrow space like a general wastewater treatment facility, it uses a method for mounting to the water quality improvement apparatus of the present invention described below.

Figure 3 shows the green algae removal and water quality improvement apparatus in a stagnation water according to another embodiment,

The buoy 11 floating in the water and the water-chamber 13 coupled through the plurality of fixing pieces 12 are positioned at a constant depth from the water surface.

A bellows suction port 14 is formed at an upper end of the underwater amber 13 to allow surface water of green algae in rivers and lakes to flow.

The inside of the underwater oxidation barrel (3) to maximize the removal of green algae in the stagnant water of rivers and lakes by installing plasma, ozone, ultrasonic, ultraviolet oxidation and sterilization apparatus.

By the impeller 5 which receives the rotational force of the motor 7 at the lower end of the underwater oxidation tank 3 and rotates, the mixed water in which the treated water and the low temperature deep water are mixed is discharged to the discharge port 6. By sending the water below the surface water due to the difference in density, the surface water with much frankton is continuously sucked into the tank by the rotation of the impeller to remove the algae.

Figure 4 shows the green algae removal and water quality improving apparatus in a stagnation water according to another embodiment,

An underwater oxidation chamber (chamber) 22 coupled to the bottom support 20 through a plurality of fixing pieces 21 is positioned at a constant depth from the water surface.

An intake port 23 is formed at an upper end of the underwater amber 22 to allow surface water in the stagnant water to flow.

The oxidation and sterilization apparatus of plasma, ozone, ultrasonic waves and ultraviolet rays are installed inside the underwater oxidation barrel 22 to maximize the removal of green algae in the stagnant water, the oxidation and sterilization efficiency of organic substances.

The mixed water in which the treated water and the low-temperature deep water are mixed into the discharge port 25 is discharged by the impeller 24 that receives the rotational force of the motor 26 from the lower end of the underwater oxidation tank 22 and rotates. By sending the water below the surface water due to the density difference, the surface water with much frankton is continuously sucked into the oxidizer tank by the rotation of the impeller, eliminating the algae, and it is also excellent for solving the stratification problem by mixing the deep water and the surface water and vertical circulation. In addition, since the organic material in the stagnant water is oxidized by the oxidizing device in a limited volume in the oxidizing barrel, the oxidation efficiency is further improved.

5 is a view illustrating an apparatus for removing green algae and water quality in a stagnation water according to another embodiment,

Through the suction port 32 directly coupled to the small buoy 31 floating in the water to allow the surface water in the stagnant water of the river and the lake to be introduced into the underwater oxidation tank (35).

The suction port 32 of the underwater amber 35 slides according to its own load of the underwater oxidizer 35 by fitting the upper diameter pipe 33 into the upper large diameter pipe 34 of the lower portion. Make sure you are at the right depth from the surface.

Plasma, ozone, ultrasonic, ultraviolet oxidation and sterilization devices (not shown) are installed inside the underwater oxidation barrel 35 to remove green algae from stagnant waters of rivers and lakes, and to maximize the oxidation and sterilization efficiency of organic matter. do.

By the impeller 36 which receives the rotational force of the motor 38 at the lower end of the underwater oxidation tank 35 and rotates, the mixed water in which the treated water and the low-temperature deep water are mixed into the discharge port 27 is discharged. By sending the water below the surface water due to the density difference, the surface water with much frankton is continuously sucked into the oxidizer tank by the rotation of the impeller, eliminating the algae, and it is also excellent for solving the stratification problem by mixing the deep water and the surface water and vertical circulation. In addition, since the organic material in the stagnant water is oxidized by the oxidizing device in a limited volume in the oxidizing barrel, the oxidation efficiency is further improved.

1: buoy 2: fixed piece
3: underwater oxidation tank 4: intake port
5 impeller 6 discharge port

Claims (4)

The inlet port 4 is formed at the upper end of the underwater oxidation chamber 3 which is coupled through the buoy 1 and the plurality of fixing pieces 2 and is located at a constant depth from the water surface to form surface water in the stagnant water of rivers and lakes. To let in,
The oxidation and sterilization apparatus of plasma, ozone, ultrasonic wave, and ultraviolet ray are installed inside the underwater oxidation barrel 3 to remove green algae from the stagnant water of rivers and lakes, and to maximize the oxidation and sterilization efficiency of organic matters.
By the impeller 5 which receives the rotational force of the motor 7 at the lower end of the underwater oxidation tank 3 and rotates, the mixed water in which the treated water and the low temperature deep water are mixed is discharged to the discharge opening 6. Green algae removal and water quality improvement apparatus in a stagnant body of water characterized in that it is configured to be sent below the surface water due to density differences. The method according to claim 1,
Green algae removal and water quality improvement apparatus in the stagnant water, characterized in that the upper surface of the oxidizing barrel 13 is formed so that the bellows suction port 14 is formed so that the surface water of the green algae of the river and the lake can be introduced. The method according to claim 1,
The underwater tank 22 is coupled to the bottom support 20 through a plurality of fixing pieces 21 is located at a certain depth from the water surface and configured to allow the surface water in the stagnant water flows through the intake port 23 of the top Green algae removal and water quality improvement device in the stagnant water. The method of claim 4,
Through the suction port 32 directly coupled to the small buoy 31 floating in the water to allow the surface water in the stagnant water of the river and the lake to be introduced into the underwater oxidation tank (35).
The suction port 32 of the underwater amber 35 slides according to its own load of the underwater oxidizer 35 by fitting the upper diameter pipe 33 into the upper large diameter pipe 34 of the lower portion. Green algae removal and water quality improvement device in the stagnant water, characterized in that configured to be located at an appropriate depth from the water surface.

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