JP6047518B2 - Water quality improvement method and apparatus - Google Patents

Description

  The present invention relates to a method and apparatus for improving water quality, and more particularly, rivers, lakes, and even heavy oil spills that have become seriously contaminated by eutrophication, such as by inflow of domestic wastewater, industrial wastewater, agricultural chemicals, and the like. The present invention relates to a method and an apparatus for improving water quality in a sea bay or the like having a problem of drifting of an oil coated with a surfactant.

  Conventionally, there are various methods and devices for improving rivers and lakes, such as decomposition of pollutants using microorganisms, physical treatment using ozone and ultrasonic waves, and adsorption and filtration with charcoal, bamboo charcoal, activated carbon, etc. Has been developed. In addition, human efforts such as river cleaning activities by companies and local governments have also been made. Furthermore, the environmental morals of the Japanese people have been raised, and the act of flowing waste oil etc. into domestic wastewater has been reduced. Even in factories where waste liquid has been discharged into rivers, the environmental management system (ISO14001) There are an increasing number of companies that are accredited by the government, and that they are making efforts to improve the environment as corporate compliance from social norms and ethics.

  The Ministry of Land, Infrastructure, Transport and Tourism's “National Census of Rivers (River Version)” also revised partly in March 2012, two years ago, regarding biological surveys and surveys on river environment maps that were revised in 2006. As a result, the efforts to tackle water quality issues have just been strengthened.

  However, it is extremely difficult to improve and purify rivers and oceans that have been polluted over a long period of time, and recovery is difficult unless large-scale water treatment equipment and long-term work are used. It is also a problem that enormous costs are required especially for the purpose of purifying large lakes and oceans.

  In view of such a problem, various techniques have been conventionally proposed. The inventors of the present application have also worked on solving problems and have made technical proposals. For example, “Proposal of a method and apparatus for efficiently decomposing and eliminating harmful substances by generating bubbles in which many negative ions are taken into contaminated water (see Patent Document 1)”. According to the invention, the impact ionization phenomenon is caused, and the ultrafine bubbles are spread and drained from the annular opening of the diffusion plate to the river and the lake, and the cavitation effect is generated when the drained ultrafine bubbles disappear. Can detoxify harmful substances. Since the detoxified treatment residue material floats on the surface of the water by interfacial coagulation, it can be sucked and treated on the ground.・ It is prevented from sinking to the bottom of the lake to become sediment sludge, and the effect of improving the water quality of rivers and lakes is extremely large.

  However, in spite of the conventional improvement of sewage in rivers and lakes by the various methods described above, pollution is becoming increasingly serious. And because of the lack of methods to remove the detoxified treatment residue due to decomposition, adsorption, filtration, etc. of harmful pollutants, the detoxified residue settles at the bottom of rivers and lakes. As a result, there was a problem that eutrophication such as nitrogen and phosphorus occurred and became a large-scale source of plankton. The method and apparatus of Patent Document 1 is a technology that can solve these problems. However, it takes 1 to 2 months to recover all the ponds and lakes in a wide area because it involves collecting water-floating organic matter floc generated after treatment. It takes a long time, and further, since the rotating part has a narrow sewage passage, the rotational torque becomes high, and a great deal of power and shortening of the component life have occurred as problems. In addition, efficient microbial degradation and removal of emulsified oil drifts coated with surfactants associated with heavy oil spills, which has recently become a social problem, has not been sufficient.

  In addition, “Microbubble device for dissolving microbubbled gas in liquid” (see Patent Document 2), “Method for improving water using bacteria, and fisheries using bacteria” Culture method and system (refer to Patent Document 3) "or" Electrolyzed water production apparatus for producing alkaline electrolyzed water and acidic electrolyzed water, and alkaline electrolyzed water or acidic electrolyzed water produced thereby as a cleaning liquid for decontamination objects Contaminant treatment apparatus and treatment method having decontamination equipment for decontamination ”(see Patent Document 4), and further“ the shape of the ceramic alone incorporated in the water purification apparatus for improving water is There is a ceramic for a water purifier that is a polyhedron or the like surrounded by a plane that is equal to or greater than the surface (see Patent Document 5). Each of these inventions has unique advantages and is considered useful. However, the effects of water purification are unique, and at least biochemical oxygen demand (BOD), chemical oxygen demand (COD), suspended or suspended substances (SS: There is a demand for a technical proposal for a water purification apparatus that exhibits a combined effect on suspended solid, total nitrogen, and total phosphorous, and that can be implemented at low cost.

JP 2001-79557 A Japanese Patent No. 4879365 JP 2001-121186 A JP2013-224918A JP 2009-268964 A

  The present invention has been made to solve the above-mentioned problems, detoxify polluted rivers and lakes, float the detoxified residue on the water surface, and remove it by suction. Rivers and lakes that do not require post-treatment work such as surface treatment, can efficiently decompose oil emulsified with surfactants drifting in the sea bay, and have a simple device structure with few failures and long life, and are inexpensive. An object of the present invention is to provide a sea bay water quality improvement method and apparatus.

The present invention includes a water absorption step for taking in water before treatment from a water supply port, an intake step for compressing the air taken in from the intake port and taking in air while increasing the amount of oxygen, and compressed air taken in in the intake step. an ionization step for ionizing the generator, and the flow path of the compressed air which is ionized through the ionization process, the a flow path of the water before the treatment taken by water absorption process and connected by a connecting port, the gas-liquid mixed fluid the obtained acceleration injecting the gas-liquid mixed fluid and mixing step of microbubbles by using a vortex turbulence generator, the micro-bubbling has been pre-handed liquid mixture into water narrow the diameter of the discharge opening And an accelerated jetting process for further microbubble formation.

  Further, the present invention uses an oxygen concentrator that adsorbs a nitrogen component to the filled zeolite powder and increases the oxygen concentration, and the oxygen concentration step for increasing the oxygen concentration of the air taken in in the intake step is the ionization step. It is also possible to adopt means for performing the previous process.

  Further, the present invention may employ means having a growing light radiation step of irradiating a growing light beam before the mixing step in which the treated water sucked from the water suction port is used as the gas-liquid mixed fluid in the water absorbing step. it can.

Further, the present invention is an apparatus for carrying out the water quality improvement method according to any one of the above, wherein in the water absorption step, the water before the treatment is sucked from the water inlet and is pumped to the water pipe. A water pump, and an air pump for sucking air in the atmosphere from the air inlet and compressing the air to the ion generator through an air supply pipe to increase the amount of oxygen in the air intake step, an ion generator that ionizes the air supplied by the air pump, in the mixing step, the ion generating device by the water before the water supply has been treated by the water pump and the air tube is a flow path of compressed air ionized connection hole for connecting the water-feed tube is a flow path, and, Uzuran flow generating device, the provided capital, in the acceleration injection step, into water narrow the diameter of the discharge port Ru is fast injection accelerate injector may be a water quality improvement device characterized by comprising a.

  Further, according to the present invention, the oxygen increasing device for increasing the oxygen fraction of the gas by adsorbing and removing nitrogen in the air is arranged upstream of the ion generating device. It can also be set as the water quality improvement apparatus of description.

Further, the present invention is after the treated water is taken in the water absorption step, and before the previous mixing step,
It is also possible to employ a configuration in which a growth light emitting ceramic storage tube is provided in either the upstream portion or the downstream portion of the connection port that connects the water supply tube and the air supply tube, or in both the upstream portion and the downstream portion.

  Also, the present invention employs a configuration in which the ion generating means equipped in the ion generating device includes a porous bonded chip storage tube in which ceramic minerals having the ability to ionize air are dispersed in straw fibers. You can also.

  According to the water quality improvement method and the water quality improvement apparatus according to the present invention, when used for improving the water quality of rivers, lakes, and sea bays, the contaminated rivers and lakes are detoxified and the detoxified residual substances are used. It floats on the surface of the water and removes it by suction to eliminate the need for post-treatment such as ground treatment. Furthermore, the oil emulsified with the surfactant drifting in the sea bay can be efficiently decomposed, and the structure of the device is simple. In addition, there are few failures, long life, easy maintenance work, low cost to manufacture and maintain, long-term use that prevents parts from failing, and a wider area within a relatively short period of time. It can be improved efficiently.

  Further, in the water quality improvement method and the water quality improvement apparatus according to the present invention, in the configuration employing the oxygen concentration step, the oxygen concentration in the gas is enhanced by reducing nitrogen in the air with the adsorbent, and ionization is performed in the ionizer. The ionized gas with a high oxygen fraction further activates the decomposition action of aerobic microorganisms that decompose organic matter. As a result, organic substances and the like can be rapidly decomposed and water quality can be improved. Moreover, the algae and fish organisms in the water also have an excellent effect that the activity is increased by the increased amount of oxygen and a favorable biological environment is constructed.

  Further, in the water quality improvement method and the water quality improvement device according to the present invention, in the configuration employing the growing light radiation step, the water molecule cluster is reduced by passing through the growing light radiation ceramic storage area, and the permeability thereof is improved. In addition to the usual organic matter, the emulsion is a surfactant that drifts in the sea bay, which has been difficult to improve. The excellent effect of being able to decompose and extinguish the converted oil efficiently and over a wide range is exhibited.

  In the case of using an ion generator equipped with a storage tube for a porous bonded chip in which the ceramic mineral is dispersed in the cocoon fiber, the porous bonded chip in which the mineral that ionizes air is dispersed in the cocoon fiber is usually used. The amount of ionized molecules in the gas can be increased to 10 times or more of the ionization amount of air. In this device, ionized gas increased to 100 to 10,000 times is used, so that oil that has been coated with a surfactant and drifted due to decomposition by microorganisms also has microbubbles with improved ion action and permeability. It exhibits an excellent effect that the surfactant can be efficiently peeled off by the physical action of the treated water to be contained, and degradation by microorganisms can be improved.

It is this schematic flowchart which shows the water quality improvement method of this invention. It is a chart figure which shows the water quality improvement method of this invention. It is a side view of the apparatus which shows the structure of the Example of this invention. It is a top view of the apparatus which shows the structure of the Example of this invention. It is sectional drawing which shows the structure of the water inlet of the Example of this invention. It is sectional drawing which shows the structure of the ion generator of the Example of this invention. It is sectional drawing which shows the structure of the discharge port of the treated water of the Example of this invention. It is a table | surface which shows the result of the experiment initial stage of this invention. It is a graph which shows the result of the experiment initial stage of this invention. It is a table | surface which shows the result about one month after the experiment start of this invention. It is a graph which shows the result about one month after the experiment start of this invention. It is a table | surface which shows the result about three months after the experiment start of this invention. It is a graph which shows an initial result about 3 months after the experiment start of this invention. It is the photograph which displays the result of invention. It is explanatory drawing which shows a sea bay test result. It is a table | surface which shows a sea bay test result (oxygen concentration). It is a photograph which shows the result (transparency) of invention.

  The present invention is a method for improving the water quality by physically, chemically, and microbially degrading organic substances floating in water over a wide area such as rivers, lakes, and sea bays, and a water quality improvement device used in the method. The most characteristic feature is that the gas-liquid mixed fluid is ejected by ionizing the ionized air into fine bubbles. In addition, by adopting a structure that passes through a process of irradiating water with growth light and a process of increasing the oxygen concentration as a pre-process, this function is suitable not only for water purification but also for growing plants and shellfish. It can also be set as the structure which discharges water and improves water quality, such as a river, a lake, or a sea bay.

  First, two means can be introduced as means for physically decomposing. The first is so-called microbubbles. By generating fine bubbles in treated water having high permeability, the fine bubbles enter the inside of the object to be decomposed, and the object is finely divided by bursting of the bubbles. In the present invention, as a means for generating fine bubbles, a structure (Venturi) for narrowing the diameter of the discharge port is adopted, and the treated water is distributed to a far distant area by accelerating the treated water. In addition, the microbubbles generate an ultrasonic wave when ruptured, and the molecules are vibrated by the impact, so there is an effect of killing bacteria. In the culture of oysters, there is an application example of sterilization in which oysters are ultrasonically cleaned to remove fungi that cause per meal.

  The second physical decomposition means is to irradiate water with a growing light beam. By resonating with the molecular vibration frequency of water, the activation energy is amplified, the water cluster is divided, and the degree of freedom is improved, so that the water can be changed to highly permeable water. In general, it is said that plant growth is good when water permeability is high.

  The chemical decomposition means is to ionize the gas that becomes bubbles. As a result, the surfactant is separated from the oil by the permeation of the ionized bubbles of the oil that is usually covered with the surfactant, which is said to be difficult to decompose by microorganisms, and is efficiently decomposed by the microorganism. It will be. That is, the decomposition efficiency is enhanced by the synergistic effect of the chemical separation means and the separation means by microorganisms. These microorganisms that contribute to degradation are aerobic, and their activity is further enhanced by increasing the oxygen concentration in water. In addition, radicals (unpaired electrons) generated by ionization are combined with other non-radical species at a very high rate as reactive, short-lived intermediates. If a filter or the like is used, the adsorption to the filtration filter or the like is promoted.

  As described above, the present invention is a method for improving water quality by effectively and rapidly decomposing water stains by combining physical, chemical and microbial means. Such a process or apparatus will be described below with reference to the drawings.

  FIG. 1 is a schematic flowchart showing a water quality improvement method according to the present invention. FIG. 1 (a) shows a flow outline of the water quality improvement method according to claim 1, FIG. 1 (b) shows a flow outline of the water quality improvement method according to claim 2, and FIG. The flow outline of this water quality improvement method is shown. Moreover, FIG.1 (d) has shown the flow of the water quality improvement method at the time of providing all the said components.

  In the water quality improvement method according to claim 1, as shown in FIG. 1 (a), the air blown from the air pump 2 in the intake process is increased in the absolute amount of oxygen per unit volume, and is then supplied to the ionization process 100. The ionized air is ionized by the ionization process 100, and the ionized air is microbubbled and mixed with the water supplied in the mixing process 200. Further, the accelerated jet process 300 increases the flow rate of the treated water and releases it. It is a water quality improvement method.

  As shown in FIG. 1B, the water quality improvement method according to claim 2 is the water quality improvement method to which an oxygen concentration step 500 for further increasing the oxygen concentration of the compressed air taken in by the intake step is added. .

As shown in FIGS. 1 (c) and 1 (d), the water quality improvement method according to claim 3 is the water quality improvement in which a growing light radiation step 400 for emitting a growth light to the treated water taken in by the water absorption step is added. Is the method.

  FIG. 2 is a chart showing the flow of absorbed water, the flow of air sucked by the air pump 2, and the flow of mixed water discharged and sucked air. In addition, FIG. 2 illustrates the water quality improvement apparatus 1 when all the elements necessary for the configuration of the invention described in the claims are provided in order to facilitate the overall configuration. Therefore, this does not consciously exclude the configuration that does not include the oxygen concentrating device 5 and the growing light emitting device 12.

  Since the air that has passed through the air filter 3 from the air pump 2 is put out at a high pressure of at least atmospheric pressure, it can be mixed with water in a compressed state, resulting in an increase in the amount of dissolved oxygen that the water can hold. To do. After that, since the air dissolved under pressure is depressurized to atmospheric pressure simultaneously with water discharge, the excessively dissolved air is bubbled and becomes cloudy. The amount of bubbles generated increases as the applied pressure increases, but bubbles rise and deaerate, increasing the transparency in the container and disappear after a few minutes. The oxygen concentration greatly exceeded the saturation concentration. Therefore, it can be said that the supersaturated air dissolved in water in a pressurized state has a characteristic that it can be maintained in water in a partially supersaturated dissolved state, rather than being rapidly bubbled. Therefore, the water obtained by the water quality improvement method and the water quality improvement apparatus 1 according to the present invention becomes functional water that contributes to the activation of microorganisms (see FIG. 17).

  The flow of air in the water quality improvement apparatus 1 will be described. As for the air flow, impurities removed from the outside air taken from the air pump 2 through the air filter 3, sent to the oxygen concentrator 5 through the air supply pipe 4, and the oxygen concentration was adjusted to 25 to 95% by the oxygen concentrator 5. Then, it is sent to the ion generator 6.

  The air pump 2 is a device that sends the air necessary for the water quality improvement method and the water quality improvement device 1 according to the present invention. The air pump 2 dissolves air in the water until it becomes supersaturated using the pressure applied by the compressed air, and is supersaturated. High concentration oxygen water containing oxygen is produced. In order to obtain high-concentration oxygen water, it is necessary to have an output characteristic of at least atmospheric pressure (0.1 MPa) or more, but in theory, oxygen saturation increases in proportion to the applied pressure. It is desirable to use a product having compressible discharge performance. In order to increase the oxygen concentration by about three times, pressurization of at least 0.2 MPa is necessary, and in order to obtain an oxygen saturation of 95% oxygen concentration, at least a pressure of 0.5 MPa or more is applied. Output is required. Therefore, it is possible to obtain a desired oxygen concentration with the air pump 2 alone, but in order to obtain a high oxygen concentration in a large amount of treated water, an oxygen concentrator described later is considered in consideration of downsizing and power saving. Use with 5 is also effective.

  The air filter 3 mainly absorbs fine dust and dust in the air, and further, at the coast part, adsorbs salt in the air and prevents it from entering the inside. The filter material used in the experiment was cloth or Japanese paper.

  The oxygen concentrator 5 is a device that separates nitrogen and oxygen in the air pressurized by the air pump 2 and extracts oxygen. The air separation methods can be broadly divided into two types: the “deep-cooling separation method” that utilizes the difference between the boiling points of nitrogen and oxygen, and the “PSA method” that utilizes the difference between the equilibrium adsorption amounts of nitrogen and oxygen. Used a powder filled with zeolite powder, and “oxygen PSA” was adopted in which the nitrogen concentration in the air was adsorbed to the zeolite powder by ventilation to increase the oxygen concentration. However, the present invention does not exclude other “nitrogen PSA” or the “deep-cooled separation method”, and includes a method of increasing oxygen concentration by supplying oxygen to air taken in an intake process from an oxygen cylinder or the like. As long as the effect of the invention can be generated, it can be diverted as long as it exhibits the same effect (an apparatus that concentrates the oxygen concentration to 25 to 95% and sends it to the ion generator 6). The function of increasing the oxygen concentration is a device different from the configuration in which the amount of dissolved oxygen is increased by increasing the absolute amount of air by pressurization by the air pump 2. It is an apparatus used for the water quality improvement method of Claim 3, and the water quality improvement apparatus 1 used in any one of Claims 5-7.

  Next, the growing beam radiation device 12 of FIG. 4 will be described in detail. As the water absorption filter 11, a metal net coated with a coating material containing a growing light radiation ceramic was used. The contaminated water that has passed through the water absorption filter 11 is activated by resonating with the molecular vibration frequency of the water by passing through the housing area of the growing light emitting ceramic balls 19 surrounded by the growing light emitting network 18 coated with the coating containing the growing light emitting ceramic. By amplifying the energy, the water cluster is divided to improve the degree of freedom and change the water into highly permeable water.

  The growth light emitting ceramic-containing paint was used by dispersing a ceramic material powder such as titanium dioxide, alumina, black silica, tourmaline, and the like and bamboo charcoal powder in a paint and applying it to a metal net.

The growing light emitting ceramic ball 19 is mixed with ceramic material powder clay such as titanium dioxide, alumina, black silica, tourmaline, etc. The particle size is about 3 mm to 20 mm, and the spheres with an average particle size of 8 mm were used for the experiment. Molded and fired at about 1000 degrees. When a growth experiment of 20 days radish was carried out with the growing light emitting device 12 alone, the germination rate increased from 30% to 40% . I follow, to the growing light emission device 1, such as a powder of the breeding ray radiation ceramic balls 19 or ceramic material powder and charcoal used is applied to dispersed metal net into the coating, developing the utilization and wide ones I can say that.

The ion generator 6 in FIG. 5 will be described in detail. The container 22 of the ion generator 6 was made of an electrically insulating plastic. The container is filled with an ionized ceramic chip 20 surrounded by a growing light radiation network 18 and the gas sent from the air pump 2 is passed through the ionized ceramic chip 20 to ionize the gas. In addition, using the ion generator 21 to ensure ionization is also perfectly effective. The ion concentration of ordinary outside air is 100 to 200 / cc, and the concentration is increased to 10,000 to 1,000,000 / cc by passing through the ion generator. In addition, the survival rate increased from 20% to 30% as a result of breeding with water related to the cultivation of puffer fish grown for three months from fry.

  The ionized ceramic chip 20 is formed by binding far-infrared radioactive substance powder, tourmaline, and fine carbon powder with bran fibers and dry-molding them into 2-3 cm square chips, and has a porous surface.

The ion generator 21 ionizes ambient air by applying an alternating electric field and causing glow discharge.

  Next, the vortex turbulence generator 14 and the fine bubble generating nozzle 15 of FIG. 6 will be described in detail. The vortex turbulence generator 14 has a partially spherical shape having a diameter larger than the diameter of the water pipe 13, and the gas-liquid mixed fluid 600 sent to the water pipe 13 enters the vortex turbulence generator 14. Vortex turbulence is generated along the curved inner wall. At this time, the gas-liquid mixed fluid 600 is a squeezed member having a shape in which the ionized gas contained therein is stirred by vortex turbulence, resulting in microbubbles, and the squeezed diameter is gradually reduced by the water pressure of the subsequent processing water. 23 is pushed in the direction of the discharge port 16 where 23 is disposed. From the discharge port 16, the flow velocity is accelerated by the water pressure, the treated water is jetted like a jet stream, and the bubbles in the treated water are further refined and pushed away far away like a white belt.

  The vortex turbulence generator 14 has a spherical structure in which the center positions of the water inlet and outlet are not the same and are slightly shifted, and vortex turbulence is generated in the sphere and discharged from the outlet. The contained water contains finer microbubbles.

  The aperture narrowing member 23 is formed as a funnel-shaped growth light generating material to make the water cluster finer, while being vigorously ejected from a narrowed discharge port as a fine bubble. The treated water is diffused far away.

  According to the embodiment described above, the water quality improvement method of the present invention is a method for improving the water quality by decomposing organic substances floating in a wide area of water such as rivers, lakes, and sea bays physically, chemically, and microorganisms. .

  First, two means are introduced as means for physically decomposing. One of them is that water with high permeability can be obtained by irradiating water with growth light to resonate with the molecular vibration frequency of water and amplify the activation energy, thereby dividing the water cluster and improving the degree of freedom. To change.

  The second physical decomposition means is to generate fine bubbles in the highly permeable treated water so as to enter the inside of the decomposition target object and to divide the target object finely by bursting the bubbles. Further, as a means for generating fine bubbles, the structure is such that the diameter of the discharge port is narrowed down, and the treated water is distributed to a far distant wide area by accelerating the treated water.

  On the other hand, the chemical means is to ionize the gas in the bubbles. As a result, oil that has been covered with a surfactant, which is usually said to be difficult to decompose by microorganisms, is emulsified, and the surfactant is peeled off from the oil by the permeation of ionized bubbles. That is. These microorganisms that contribute to degradation are aerobic, and their activity is further enhanced by increasing the oxygen concentration in water. As described above, the present invention is a method for improving water quality by efficiently and rapidly decomposing water stains by combining physical, chemical and microbial means.

  Moreover, according to embodiment mentioned above, the water quality improvement apparatus 1 suck | inhales external air via the air filter 3, sends it to the oxygen concentration apparatus 5 via the air supply pipe 4, and concentrates oxygen concentration to 25-95% with the oxygen concentration apparatus 5. To the ion generator 6. In the ion generator 6, the ionized oxygen-containing gas containing 10,000 ions / cc to 1,000,000 ions / cc is contaminated water at the connection port 8 provided with the reverse branch valve 7 through the air supply pipe 4. The water is sucked into the water flow and mixed into the water supply pipe 13. On the other hand, the water sucked by the water absorption pump 10 passes through the water absorption filter 11, passes through the growing light radiation device 12, and is sent to the connection port 8, where ionized air is taken into the water. The mixed liquid of gas and liquid forms microbubbles of ionized air while convection in the vortex turbulence generator 14. Thereafter, the gas is accelerated and ejected from a fine bubble generating nozzle 15 having a discharge port 16 with a narrowed diameter, and the bubbles are further miniaturized and discharged vigorously. While these decompose physical and chemical organic substances that are pollutants, an environment in which the activity of aerobic microorganisms that decompose organic substances is active is maintained, and a favorable state can always be maintained in a wide range. .

FIGS. 8 to 14 show the results of experiments conducted at Shinobazunoike, a natural pond located in Ueno Onshi Park, Taito-ku, Tokyo. 8 and 9 show immediately after the start of the experiment, FIGS. 10 and 11 show about one month after the start of the experiment, and FIGS. 12 and 13 show the results of measurement after about three months from the start of the experiment. . The measurement targets are pH (hydrogen exponent), BOD (Biochemical oxygen demand), COD (Chemical Oxygen Demand), SS (suspended solid). Suspended substances or suspended substances), total nitrogen (a general term for compounds containing nitrogen), and total phosphorus. The water quality improvement method and the water quality improvement apparatus 1 used in the experiment are the water quality improvement method according to claim 1 and the water quality improvement apparatus 1 according to claim 5 described in the claims of the present application.

First, regarding pH, the test pond outside water W1 and the test pond water W2 changed greatly immediately after the start of the test. The pH at neutrality where the hydrogen ion concentration and the hydroxide ion concentration are equal to the logarithm of the reciprocal of the hydrogen ion concentration in the aqueous solution is 7, and when the pH is higher than 7, the pH becomes alkaline, and vice versa. In river water without human pollution, the pH may change mainly due to geological factors, but in general, the pH of rivers in Japan is usually near neutral. There are exceptionally swamps with high alkalinity due to the influence of volcanoes and hot springs, but there is no particular geology near the Shinobazu Pond used in the test, pH 6.5 to 8.5 for rivers, pH 7.8 for sea areas 8.3 is said to be suitable for the growth of organisms, and if the pH goes out of the range of these values, it is expected that the balance of the ecosystem will be lost and production will be reduced. In the case of paddy rice, pH 6.0 to 7.5 (agricultural water standard) is suitable, and pH 6.5 to 8.5 is desirable for tap water.
Immediately after start of the test, after about one month, even further look at the timing of or after about 3 months, the alkalinity is high, and compared with the test battery outside water W1 variation was also large in value, the test battery internal water W2 is pH Always showed a stable value (neutral) from 6.7 to 7.

  Next, regarding BOD, BOD is a representative index indicating water pollution, and refers to the amount of dissolved oxygen consumed by aerobic microorganisms in water. It is thought that it is necessary to be 5 mg / L or less for the carp and the crucian carp that live in the Shinobazu Pond. Further, in terms of environmental conservation, it is considered that 10 mg / L or less is appropriate for BOD from the viewpoint of odor limit in relation to DO. Immediately after the start of the test, about 1 month later and further about 3 months later, it was suppressed to 1 to 2.2 or less, and an effective result could be obtained.

  Regarding COD, COD is a representative indicator of water pollution along with BOD, and environmental standards are defined for each type of lake and marine area. It is thermally decomposed in a water bath for 30 minutes, and the amount of permanganic acid consumed is determined and expressed by the corresponding amount of oxygen. 1 mg / L or less is considered to have almost no human pollution, and these lakes are suitable for natural exploration. Water consumption standard of potassium permanganate is 10mg / L or less based on water quality standards, and when converted to COD, it becomes 2.5mg / L or less. As 3 mg / L or less. As water for agriculture, when COD is high, the vitality of rice roots decreases due to the promotion of soil reduction and the like, and rooting occurs. If the water bath is COD 3 mg / L or less, there is no problem. From the viewpoint of industrial water and environmental conservation, COD 8 mg / L or less is sufficient. According to the invention of the present application, it was possible to keep it within the target numerical value at any time immediately after the start of the test, about one month later, and further about three months later. When the test pond water W1 and the test pond water W2 were compared, the water decreased significantly and an effective result could be obtained.

Regarding SS, SS is an insoluble substance suspended in water, and the greater the value, the more water pollution. In JIS, it is called suspended matter, and includes fine particles derived from clay minerals, animal and phytoplankton and their carcasses, organic substances and metals derived from wastewater, etc. In general, clear rivers are mainly composed of clay, and the percentage of organic matter increases as pollution progresses. In lakes and marine areas, plankton and their dead bodies increase depending on the season. The amount of SS affects the appearance of water turbidity, transparency and transparency. The effects of SS on ecosystems include algae inhibition of algae by preventing suffocation of fish and transmission of sunlight. The normal river SS is several tens mg / L at the highest, but it may be several hundred mg / L or more after rainfall. Moreover, SS25 mg / L or less is desirable as a normal growth environment for aquatic products, and 100 mg / L or less is the standard for SS in agricultural water. According to the test results of this case, as shown in FIG. 8 to FIG. 14, when the test pond outside water W1 and the test pond water W2 are compared, it can be seen that there is a significant decrease in all items.

  Finally, environmental standards for total nitrogen and total phosphorus in lakes are established as desirable standards that should be maintained in order to protect the living environment in order to prevent the growth of algae in the water. When the concentration of nitrogen and phosphorus in the water rises and the water area becomes eutrophic, the use of the water area such as deterioration of the landscape due to decrease in transparency, occurrence of nasty smell of tap water, filtration failure of water purification plant, seafood mortality, etc. Cause trouble. In the case of water supply class 1, the environmental standard values are 0.2 mg / L or less for total nitrogen and 0.01 mg / L or less for total phosphorus, and the environmental standard value for agricultural water is suitably 1 mg / L or less for total nitrogen. From the viewpoint of environmental conservation, it is considered appropriate that the total nitrogen is 1 mg / L or less and the total phosphorus is 0.4 mg / L or less, as long as it does not give unpleasant feelings to people's daily lives. From the test results obtained by the water quality improvement method and the water quality improvement apparatus 1 according to the present invention, the total nitrogen was suppressed to 1 or less, and the total phosphorus value was 0.025, which was a very effective effect.

The result of the water quality test in the Shinobazu Pond is based on the Tochigi Prefectural Environmental Technology Association (2145-13 Shimookamoto, Utsunomiya City, Tochigi Prefecture). The above effect can be clearly recognized by visual observation, and FIG. 14 shows the effect. In FIG. 14 (a), it can be seen that the flocs of the sea lions and sludge are solidified and layered, and water cannot be taken in from the water inlet. In FIG. 14B, it can be seen that flocs of water and sludge are taken in by the device, and pond water appears around the device, showing an excellent water purification effect. In FIG. 14 (c), it can be seen that the sea lions and sludge are floating on the surface due to the ionization action. In FIG. 14 (d) and FIG. 17, it can be seen that the water quality is improved and the transparency is improved, as shown in the photographs.

Next, a test result by the water quality improvement method and the water quality improvement apparatus 1 according to claim 2 described in the scope of claims of the present application will be described. Using an oxygen concentrator 5 that adsorbs nitrogen components to the filled zeolite powder and increases the oxygen concentration, an oxygen concentration step for increasing the oxygen concentration of the air taken in in the intake step is performed as a pre-step of the ionization step. using the improvement method and water quality improving apparatus 1, with respect to the oil spill in the Gulf of Mexico (Orange Beach Alabama36561), result of the oil degradation test was tested at each point in the sea bay shown in FIG. 15, a surfactant Installed at the foot of the sea bay where the covered oil drifts, and inhaled the surrounding seawater and returned the treated water to the sea bay. On the 4th day, the oil was decomposed and turned into clear seawater. The effect was achieved until crabs and starfish on the sea floor at a depth of 2m were visible. In addition, an increase in oxygen concentration as shown in FIG. 16 (after 1 week) was also achieved.

  The water quality improvement method and apparatus for rivers, lakes, and sea bays according to the present invention are literally intended to be used as a method and apparatus for improving water quality by decomposing pollutants composed of organic substances floating in rivers, lakes, and sea bays. However, it can also be used for household improvement tanks by aquaculture and further downsizing.

1 water quality improving apparatus 2 air pump 3 Air Filter 4 flues 5 oxygen concentrator 6 ion generator 7 check valve 8 connecting opening 9 battery 10 water pump 11 water filter 12 growing radiation means 13 water supply pipe 14 Uzuran flow generating device DESCRIPTION OF SYMBOLS 15 Fine bubble generation nozzle 16 Discharge port 17 Distribution board 18 Growing light radiation network 19 Growing light radiation ceramic ball 20 Ionizing ceramic chip 21 Ion generator 22 Container 23 Aperture restricting member 100 Ionization process 200 Mixing process 300 Injection process 400 Growing light radiation process 500 Oxygen concentrating process 600 Gas-liquid mixed fluid W1 Water outside test pond W2 Water inside test pond

Claims (7)

A water absorption process for taking water before treatment from the water supply port;
An intake process for inhaling air while increasing the amount of oxygen by compressing the air taken from the intake port;
An ionization step of ionizing the compressed air taken in the intake step by an ion generator;
A flow path of the compressed air which is ionized through the ionization process, the pre said processing captured by water absorption process and a flow path of water connected by a connecting opening, to obtain a gas-liquid mixed fluid,
A mixing step of microbubbles by using a vortex turbulence generator of the gas-liquid mixed fluid,
The microbubbles of has been pre-handed liquid mixture is accelerated and injected into the water to narrow the diameter of the discharge opening, the acceleration injection step further reduce the fine aerated,
A method for improving water quality, comprising: In the water quality improvement method,
Using an oxygen concentrator that increases the oxygen concentration by adsorbing a nitrogen component to the filled zeolite powder, an oxygen concentration step for increasing the oxygen concentration of the air taken in the intake step is performed as a pre-step of the ionization step. The method for improving water quality according to claim 1. In the water quality improvement method,
The water quality according to claim 1 or 2, further comprising a growing light radiation step for irradiating the treated water with a growing light beam in the flow path of the treated water before or after each step. How to improve. An apparatus for carrying out the water quality improvement method according to any one of claims 1 to 3,
In the water absorption step, a water absorption pump for sucking the water before the treatment from the water absorption port and pumping it to a water supply pipe;
In the intake step, an air pump for sucking air in the atmosphere from the intake port and compressing the air to the ion generator via an air supply pipe and supplying the increased amount of oxygen;
An ion generator for ionizing the air supplied by the air pump;
In the mixing step, connection port for connecting the water-feed tube is a flow path of the water before the water supply has been processed for the ionized flow path in which air tube and the water pump of the compressed air by the ion generating device, and , Uzuran flow generating device,
The door is provided,
The acceleration in the injection step, the discharge port A careful acceleration injected was Ru accelerate injector into water a diameter of,
A water quality improvement device characterized by comprising: 6. The water quality improvement apparatus according to claim 5, wherein an oxygen increasing device for increasing the oxygen fraction of the gas by adsorbing and removing nitrogen in the air is arranged upstream of the ion generator. The growth light emitting ceramic storage tube is provided at any position of a water supply tube from the water intake port that takes in the water before the treatment to a discharge port from which the water after the treatment is discharged. The water quality improvement apparatus according to claim 6. 6. The ion generating means equipped in the ion generating apparatus includes a storage tube for a porous bonded chip in which ceramic minerals capable of ionizing air are dispersed in straw fibers. Item 8. The water quality improvement device according to any one of Items 7 to 9.