JP2007014940A - Deep water circulating photocatalytic purifier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology which sends water in a deep water area, such as a lake, a pond and an adjoining sea, to the water surface by generating an upward water flow by using a solar panel 41 as a power source, and effectively performs the inactivation of plant plankton abnormally generated by a deterioration in water quality, sterilization of abnormally generated harmful bacteria, decomposition and removal of toxins, and the like with high efficiency and almost no running cost by using a photocatalytic action. <P>SOLUTION: An insulated lifting pipe 1 is installed so as to reach a deep layer from the center part of a photocatalytic water purification table 2 which is a half-submerged floating body with a float 3, receiving direct sunshine, and equipped with photocatalytic porous bodies 5 as a filter medium. A ring heater 44 is installed in the lower part of the lifting pipe to heat the deep water by power generated by the solar panel 41, which increases buoyancy and generates the upward water flow 81 to send the deep water onto the photocatalytic water purification table 2, and to deliver the water as purified water flow 83 subjected to photocatalytic purification. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an apparatus for purifying water quality by photocatalytic action on the surface water surface by circulating and circulating lake water, pond water, bay water, and the like from a deep water area to the vicinity of the water surface.

Recently, the inflow of domestic wastewater into lakes, ponds, inner bays, etc. and eutrophication due to organic pollution in aquaculture farms have progressed, and water quality deterioration has reached not only the surface water area but also deep water areas, which is effective. Countermeasures are desired.

As a method for increasing dissolved oxygen concentration in water and enhancing aerobic biological purification capacity, a fine bubble generating unit that supplies compressed air with a compressor to aerate fine bubbles in water is used.

In lakes, ponds, and bays where water quality has deteriorated, phytoplankton is produced in large quantities when the water temperature rises in the summer, which further promotes eutrophication. It is in an anoxic state and the natural purification ability is reduced. For this reason, a microbubble generation unit that aerates microbubbles in the water is used for the purpose of restoring the natural purification capacity. However, deterioration of water quality is a serious problem only with the microbubble aeration method. There is a shortage. In addition, the deterioration of water quality has reached deep water areas, and aeration of fine bubbles to deep water areas for purification requires compressed air by a compressor and a fine bubble generation unit, and these equipment costs are high. In addition, driving costs and maintenance costs are high, and the total running cost is high.
The occurrence of blue sea urchins due to the progress of eutrophication in lakes and ponds causes various problems. The cyanobacteria that form blue seas form colonies and contain toxins.Therefore, wildlife that drank water from the blue seas and drowning of livestock and fish have been reported. Development of a purification technology effective for decomposing and removing phytoplankton and inactivating large amounts of phytoplankton is strongly desired.
In addition, organic pollution in aquaculture farms in inner bays is surprisingly vast compared to domestic wastewater, and deterioration of water quality due to eutrophication has become a serious problem.

The present invention has been made in view of such a situation. Solar energy that can be used free of charge is used as an energy source, the environment purification action of the titanium oxide photocatalyst, and solar cell power is used as a power source to give buoyancy to deep water from the deep layer. By creating a rising water flow to the surface layer, a purification action is performed on the photocatalyst table floating by the float near the water surface, so that a running cost is low at a low equipment cost and a highly efficient water purification action is made. It was made for the purpose of providing a device.

A thin plate table with a side plate with a channel opening on the outer periphery and a mounting hole for a pumping pipe, which will be described later, is provided at the center, and a plurality of rib plates that reach the side plate radially from there. The base is protruded from the base, and the base leg is fixed to the top surface of the table, and the top surface of the table, the side plate and the rib plate are coated with a titanium oxide photocatalyst to form a photocatalytic water purification table.
In the center of the photocatalyst water purification table, a pumping pipe is connected and fixed with a slightly protruding upper end from the lower side of the table to the upper surface of the table. The structure of this pumping pipe is to provide a gap between the outer cylinder and the inner cylinder by providing a gap on the inner side of the outer cylinder, putting the inner cylinder, sealing the outer side of the inner cylinder with the upper end plate and the lower end plate with the inner cylinder as a flow channel Is evacuated to give a heat insulation effect to obtain a heat insulation pump.
The length of the pumping pipe is manufactured according to the desired depth of purification water collection. A conical water collecting swash plate is attached to the outer periphery of the lower end of the pumping pipe.
A control box with a built-in battery and control circuit is installed on the top of the pedestal that protrudes from the table to the surface of the water. A solar panel is mounted on the control box to store the generated power in the battery.
The current pipe is lowered from the control box through the gantry along the inside of the inner cylinder of the pumping pipe and connected to a ring-shaped heater so that it can be heated by heating. This heater should be positioned slightly above the lower end of the pumping pipe. Shall be placed.
A float is attached to the lower surface of the photocatalyst water purification table to make the device of the present invention a semi-submerged state near the water surface, and a mooring wire is attached below the collecting swash plate at the lower end of the pumping pipe and connected to the weight of the bottom of the water. Moored.
When sunlight is irradiated onto the photocatalytic water purification table, the coated titanium oxide photocatalyst is activated, and a strong purification effect of the photocatalyst is manifested in lake water, pond water, etc. in contact with the active surface of the photocatalytic water purification table, and at the same time a solar cell The panel generates power and stores the generated power.
In addition, the heater provided at the lower end of the pumping pipe reaching the deep layer is energized via the control circuit, and the buoyancy is improved by the water temperature rise due to the heater heating and a rising water flow is generated. In order to maintain the improvement of buoyancy, the deep layer water is delivered onto the photocatalytic water purification table. The water flow sent out on the photocatalyst water purification table diffuses to become a table water flow that flows very slowly, and the passage time on the table becomes long, so that a sufficient photocatalytic time is obtained.
While being in contact with the photocatalyst coating part on the table and receiving a purification action, it flowed in the outer peripheral direction and flowed as a purified water flow outside the photocatalyst water purification table from a channel opening provided in the side plate.

The invention of claim 2 expands the specific surface area of the photocatalyst that exhibits the purifying action to the photocatalyst water purification table portion of the purifying device of claim 1 and also has an adsorption area for bacteria to be purified, harmful bacteria, abnormal phytoplankton, etc. A porous body or fibrous mass is used as a filter medium for enlargement, and the photocatalytic porous body in which the titanium oxide photocatalyst is supported on the porous body, or the photocatalyst fibers are gathered into an appropriate-sized lump and are made of wires or fibers The fixed photocatalyst fiber lump is arranged side by side to form a photocatalyst water purification table.

According to a third aspect of the present invention, a photocatalytic water purification table is formed by arranging photocatalytic titanium oxide and silver ions on a porous body so as to form a photocatalytic silver ion porous body on a table.
When there is sunlight or ultraviolet light irradiation, both the purification action of the activated photocatalyst and the sterilization action of silver ions are utilized. Even when there is no sunlight or ultraviolet light irradiation and the photocatalyst cannot be activated, the silver ion The sterilizing power of has always worked.

The invention of claim 4 is provided with a plurality of light-emitting lamps that emit ultraviolet rays having a wavelength that activates the photocatalyst, is supported on the water from the control box, and is automatically controlled by sensing with an illuminance sensor at night or when there is no sunlight. The device of the present invention is applied to a ship or the like that travels through lakes and ponds by energizing light from the battery in the box through the control circuit, irradiating the photocatalyst water purification table surface to activate the photocatalyst and allowing the luminous lamp to be visually observed from the surroundings. Specify the existence of In addition, the surroundings are slightly brightened to improve the waterside landscape.

The power generated by the solar panel is stored in a battery in the control box, and the control circuit controls and manages the lamp using the battery charge / discharge, heater and illuminance sensor.

As described above, according to the present invention, free electric power generated in the solar cell panel is used, the deep lake water, pond water or inner bay water is heated in an adiabatic pumping pipe to raise the temperature and improve buoyancy, An ascending water flow can be created and delivered onto the photocatalytic table, and a circulating water flow from the deep layer to the surface layer can be created.
Deep water sent to the photocatalyst table flows while contacting the photocatalyst porous body arranged on the table as a filter medium, and adsorbs organic pollutants, abnormal plankton, bacteria, bacteria, etc. in the water to the photocatalyst porous body. As the photocatalyst is activated by the ultraviolet component in sunlight during the day and activated by the ultraviolet ray of the light-emitting lamp (black light) during the day, it has a powerful organic substance decomposing action and bactericidal action. In response to the photocatalyst purification action, it is sent out as a purified water flow outside the photocatalyst table.
It is extremely effective for the inactivation of phytoplankton, which occurs abnormally due to water quality deterioration, the improvement of light transmittance in water by decomposing and removing aquatic toxins, and decomposing and removing organic pollutants.
Since these actions are performed using sunlight, the power source is free of charge, and since there is no mechanical operating part, maintenance is easy and there is almost no running cost, and the total equipment cost is low.
It is possible to illuminate the waterside at night and contribute to the improvement of the landscape.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a cross-sectional view of a main part showing a state where the deep water circulating photocatalyst purification apparatus of the present invention is installed in a lake, and the filter medium of the photocatalytic porous body 5 in the figure shows a state immediately before being arranged on a table. ing. A thin plate table 21 having a side plate 22 provided with a flow path opening 23 on the outer periphery and provided with a mounting hole for a pumping pipe 1 to be described later in the central portion and provided with a plurality of rib plates 24 radiating from the starting point to the side plate 22. A base 25 protruding above the water surface is provided on the table, and the base legs are fixed to the top surface of the table, and the top surface of the table 21, the side plate 22 and the rib plate 24 are coated with a titanium oxide photocatalyst to form the photocatalytic water purification table 2.
The material of the table 21, the side plate 22, the rib plate 24, and the gantry 25 is austenitic stainless steel, and when it is installed in the ocean, it is a SUS316 material.
The upper end of the pumping pipe 1 slightly protrudes from the bottom of the table to the upper surface of the table in the pumping pipe mounting hole in the center of the photocatalyst water purification table 2, and the pumping pipe 1 is connected and fixed.
The overall structure of the pumping pipe 1 is shown in FIG. 1 and the cross-sectional structure is shown in FIGS. 4 and 5. A space is provided inside the outer cylinder 13, an inner cylinder 11 is provided, and the upper end from the inner side of the outer cylinder 13 is provided. An upper end plate 14 is attached to the outer side of the inner cylinder 11 in a mekura shape, and a lower end plate 15 is attached to the outer side of the inner cylinder 11 from the inner side of the outer cylinder 13 at the lower end portion. The space outside the cylinder 11 is evacuated to provide a heat insulating effect as the heat insulating layer 12, and the inner side of the inner cylinder 11 serves as an attachment portion for the water channel and the current-carrying pipe 43.
The length of the pumping pipe 1 is set to the desired depth of purification water collection, and a conical water collecting swash plate 16 is attached to the outer periphery of the lower end of the pumping pipe 1. The material of the pumping pipe 1 and the water collection swash plate 16 is austenitic stainless steel, and when installed in the ocean, a battery and a control circuit are built in the upper part of the pedestal 25 protruding above the water surface from a table made of SUS316 series material. A control box 42 is installed, and a solar cell panel 41 is mounted on the control box 42 to store generated power in the battery.
The current-carrying pipe 43 passes through the gantry 25 downward from the control box 42 and is lowered along the inside of the inner cylinder 11 of the pumping pipe so as to be connected to a ring-shaped heater 44 so that it can be heated by current. It arrange | positions so that it may be located a little above the lower end of.
A float 3 is attached to the lower surface of the photocatalyst water purification table 2 to make the apparatus of the present invention a floating body that is maintained in a semi-submerged state near the water surface 8, and a mooring wire 72 is attached below the water collecting swash plate 16 at the lower end of the pumping pipe 1. Connect to the bottom weight 71 and moor.
The float 3 is arranged along the outer shape of the photocatalytic water purification table 2 with a small cylindrical shape on a plurality of circular rings to obtain the desired buoyancy.
When the photocatalytic water purification table 2 is irradiated with sunlight, the coated titanium oxide photocatalyst is activated, and the water and pond water that contacts the active surface of the photocatalytic water purification table 2 exhibits a powerful purification effect of the photocatalyst. Power is generated by the battery panel 41 and the generated power is stored.
In addition, the heater 44 provided at the lower end of the pumping pipe 1 reaching the deep layer is energized via the control circuit to raise the water temperature by heating the heater, and the rising water flow 81 is generated by improving the buoyancy due to the water temperature rise. In the process of the rising water flow 81 generated by the heating of the heater 44 rising, the water temperature in the pumping pipe is gradually raised, and the pumping pipe 1 is provided with a vacuum layer so as to have a heat insulating structure, so that the decrease in the water temperature is kept slightly. The buoyancy is maintained and the rising water flow 81 is continuously generated by the continued heating of the heater 44, and the deep water is sent onto the photocatalyst water purification table 2 and diffused on the table to become the table water flow 82. In the photocatalyst coating portion, a purified water flow 83 that flows in the outer peripheral direction while being in contact with a photocatalyst filter medium (to be described later) and flowing outside the photocatalyst water purification table 2 from the flow path opening 23 provided in the side plate 22 is formed.
The generation of the ascending water flow 81 causes the deep water to be drawn into the pumping pipe 1, thereby generating the deep water flow 80, and the deep water is drawn into the pumping pipe, drawn to the surface layer and purified, and gradually circulated from the deep layer to the surface layer. Will be done.
A slight increase in water temperature is sufficient for improving the buoyancy, and even if the pumping pipe is long, the inner diameter is small and the capacity of the adiabatic pumping pipe is small, so that it can function sufficiently with the solar panel power generation amount during the day.

As shown in FIG. 2, the photocatalyst water purification table is porous as a filter medium for expanding the specific surface area of the photocatalyst exhibiting a purification action and increasing the adsorption area of bacteria, bacteria, abnormal phytoplankton, etc. to be purified. Photocatalyst porous body 5 in which a titanium oxide photocatalyst is supported on the porous body using a body or a fiber lump, or photocatalyst fiber lump 5 in which photocatalyst fibers are gathered into a lump of appropriate size and fixed with wires or fibers "The photocatalyst water purification table 2 is arranged side by side. An outflow prevention net may be provided in the photocatalyst water purification table 2 so that the filter medium does not flow out due to waves. (The outflow prevention net is not shown).
The photocatalyst porous body 5 has been commercialized as a filter material from Advance Co., Ltd. as a ceramic porous body for environmental purification, and the desired size can be ordered.
As the photocatalyst fiber mass 5 ″, ceramic photocatalyst fibers and the like are commercially available from Ube Industries, Ltd., and can be used after being bundled with ultrafine fibers having a diameter of 6 μm. The environmental cleanup action such as organic substance decomposition action is extremely powerful, and a lot of data is released and widely known from environmental research institutes.

Moreover, when making a filter medium as a photocatalyst silver ion porous body by carrying | supporting a photocatalyst titanium oxide and silver ion on a porous body, the silver ion carrying | support zeolite etc. of Sinanen Zeomic Co., Ltd. can be added.
When there is sunlight or ultraviolet light irradiation, both the purification action of the activated photocatalyst and the sterilization action of silver ions are utilized. Even when there is no sunlight or ultraviolet light irradiation and the photocatalyst cannot be activated, the silver ion The sterilizing power of has always worked.

As shown in FIG. 3, a plurality of light-emitting lamps 6 for irradiating ultraviolet rays having a wavelength that activates the photocatalyst are provided. The light-emitting lamp 6 is an ultraviolet irradiation lamp generally called a black light, and has a black fluorescent tube shape and a white fluorescent tube shape. The light-emitting lamp 6 is placed in a waterproof case that transmits ultraviolet light and light.
The luminous lamp 6 is supported on the water surface 8 from the control box 42, sensed by an illuminance sensor at night or when there is no sunlight, and automatically energized and illuminated from the battery in the control box 42 via the control circuit, and the photocatalytic water purification table. The presence of the device of the present invention is clearly indicated to a ship or the like traveling through lakes and ponds by irradiating the two surfaces to activate the photocatalyst and allowing the luminous lamp 6 to be visually observed from the surroundings. In addition, the surroundings are slightly brightened to improve the waterside landscape.
The solar battery panel 41 that generates power may be positioned above the control box 42 and installed horizontally as shown in the embodiment example or inclined to the sun to improve the light receiving efficiency. .
Each electrical component of the present invention shall be waterproof and shall withstand waves and rain.

INDUSTRIAL APPLICABILITY The present invention can be used for improving and purifying water quality in the near sea, lakes, ponds, aquaculture ponds, irrigation ponds, rivers and the like.

It is principal part sectional block diagram of the deep water circulation photocatalyst purification apparatus which concerns on embodiment of this invention. The photocatalyst water purification table part and solar cell panel part are shown with the top view of the apparatus which concerns on embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a front view of the photocatalyst water purification table part of the apparatus which shows an example of implementation of this invention, a solar cell panel part, and a light-emitting lamp part, a pumping pipe is shown in part and the downward direction is abbreviate | omitted from the middle. It is AA arrow sectional drawing of FIG. 1 of this invention. It is BB arrow sectional drawing of FIG. 1 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lifting pipe 11 Inner cylinder 13 Outer cylinder 2 Photocatalyst water purification table 21 Table 22 Table side plate 23 Flow path opening 25 Mounting frame 3 Float 41 Solar cell panel 42 Control box 44 Heater 5, 5 "Photocatalyst porous body 6 Light-emitting lamp 80 Deep water flow 81 Ascending water flow 82 Table water flow 83 Purified water flow

Claims (4)

Titanium oxide photocatalyst is coated on a table with a side plate with a channel opening on the outer periphery. As a photocatalytic water purification table, a float is attached to the bottom surface, and the photocatalytic water purification table is kept floating in a semi-submerged state near the water surface. A control box is installed at the top of the base that protrudes above the water, a solar cell is mounted on the top, the solar cell is used as the power source, a current pipe is lowered from the control box, and a heater is installed at the lower end. In addition, the pumping pipe with a heat insulation layer is lowered from the center of the photocatalyst water purification table, a water collecting swash plate is provided at the lower end of the pumping pipe, and a weight is connected with a mooring wire at the lower side. The above-mentioned heater is arranged in the above, and the buoyancy is improved by raising the water temperature by heating the heater to generate the rising water flow, and the deep layer water is used as the photocatalytic water purification table. So as to deliver, after receiving the cleaning action of the photocatalyst, deep water circulation photocatalytic purification device is characterized in that so as to flow out from the flow openings of the photocatalytic water purification table periphery. A photocatalyst porous body in which a titanium oxide photocatalyst is supported on a porous body as a filter medium on a table having a side plate provided with a channel opening on the outer periphery, or a photocatalyst fiber lump in which photocatalyst fibers are gathered into a moderately sized lump 2. The deep water circulating photocatalyst purification apparatus according to claim 1, wherein the photocatalyst water purification table is arranged side by side. 2. The deep water circulating photocatalyst purification apparatus according to claim 1, wherein the photocatalytic silver ion porous body supporting photocatalytic titanium oxide and silver ions is arranged on a table to form a photocatalytic water purification table. The deep water circulating photocatalyst purification apparatus according to claim 1, wherein a light emitting lamp emitting ultraviolet rays is provided, energized while being supported from a control box, irradiating the photocatalyst water purification table and allowing the light emitting lamp to be visually observed from the surroundings.

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