JP2008036508A - Pond purification device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pond purification device for purifying the water quality of a pond. <P>SOLUTION: The pond purification device comprises a water intake port 5 located in the deep part of a pond a suction line 3 connected from the water intake port 5 to a pump P, a feed pipe 4 for supplying water (a chemical liquid) supplied from the pump P uniformly throughout the pond, a number of connecting pipes 9 connected to the feed pipe 4 at regular intervals so as to be branched from the feed pipe 4 toward the pond, venturi nozzles each of which is connected to the tip end of the connecting pipe 9, and the middle of which is connected with a suction pipe communicating with atmosphere. Pond water is injected from the venturi nozzles. The pond water supplied from the pump P is injected into the pond so that the injected pond water is quickly returned to the water intake port 5, thereby increasing dissolved oxygen in the pond. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a pond purification device for improving the water quality of a pond. More specifically, the pond water circulation / reflux efficiency is improved, and gas (O2, O3, etc.) useful for water quality management can be easily injected. By increasing the amount of dissolved oxygen in the water and oxidizing the organic matter that pollutes the water, the generation of algae is suppressed, the generation of anaerobic bacteria that cause malodors is suppressed, and the water quality management of the pond is made even more efficient The present invention relates to a pond purification device.

  Algae and pond aquatic plants inhabiting ponds belong to primary producers, and they grow depending on light, water, and nitrogen and phosphorus dissolved in water. For this reason, whatever water is flowing into the pond (rainwater, irrigation water, drainage, etc.), it contains nutrients needed by algae, fertilizer residues, soil particles, and air (nitrogen gas in the atmosphere It is dissolved in pond water and turns into nitrate), so the pond is always rich in algae nutrients, its source is unlimited, and the amount is huge .

  For example, if there is only 0.05PPM phosphorus contained in rainwater, not only is it possible for algae to inhabit in the pond, but the sediment in the pond itself is an excellent algae nutrient. If not enough oxygen is supplied to oxidize these nutrients, the pond becomes eutrophied, causing the algae to overgrow, causing the algae to die of suffocation due to the depletion of dissolved oxygen. The corpse becomes a source of further contamination.

  When they settle in water, a significant amount is degraded by aerobic microorganisms, but the microorganisms require oxygen during the degradation process and most of this oxygen is obtained in water. If water is accumulated, the oxygen in the water will result in a further shortage as the decomposition of microorganisms proceeds. When oxygen is deficient, microbial degradation is delayed and turbidity increases, and nutrients are re-released into the water, which in turn leads to a vicious cycle of algae growth, growth, and extinction.

  If oxygen is sufficiently and continuously supplied, aerobic microorganisms can efficiently decompose organic substances and purify pond water, whereas when there is no or insufficient oxygen, Anaerobic microorganisms increase rapidly, and these generate hydrogen sulfide and methane gas in the process of decomposing organic matter, generating odors in the pond.

  For this reason, when the water stored in a pond or a small lake does not flow, the self-cleaning ability due to starch is extremely weakened. However, when air and water in the atmosphere are injected through a venturi nozzle, the pond water can come into contact with the air. The area increases several hundred times to several thousand times or more, and the contact area with oxygen in the air increases accordingly, and as a result, the amount of dissolved oxygen increases.

  FIG. 10 is a plan view for explaining a conventional pond purifying apparatus, and shows a method for preventing the pond from being contaminated by providing a plurality of fountains or aeration devices in the pond. . This requires a separate device for oxygen supply, and the oxygen supply rate must be extremely limited. In addition, if the pond is severely bent, a dead zone of circulation such as a shaded area is created. There is a problem that.

  Furthermore, when injecting a liquid that is useful for water quality management, a chemical storage tank, a metering pump, an injection tool (KIT), and a controller are required. When injecting a gas, a process for dissolving the gas is usually performed. Ancillary devices such as a tank and a diffuser are required. Moreover, when a processing tank is not provided, a separate dissolution tank is required. In addition to the problems of high installation, operation, and maintenance costs for incidental facilities, O2 and O3 are useful for water quality management because a single facility cannot handle liquid and gas together. When injecting a gas such as a pH regulator, an algaecide, a photosynthetic blocker, a flocculant, and a microbial preparation together, it is necessary to provide each device separately.

  The present invention is intended to solve the above-described problems, and provides a pond purification device that can prevent the pond from being easily contaminated and rotted, and that can greatly reduce the maintenance cost. This is the main purpose.

  In addition, the loss of gas when injecting gas into water (chemical solution) is suppressed as much as possible, and both gas and liquid can be supplied from a single facility, greatly reducing installation costs and maintenance costs. .

  In order to achieve the above object, in the present invention, first, the deep water of the pond is taken in via the pump (both onshore and submersible pumps can be used) and the intake port and the suction line, and along the periphery of the pond. After piping a circulation pipe (can be installed both outside and inside the pond), it is injected from a location approximately 20-30 cm below the surface of the pond via a venturi nozzle provided at a certain interval in the circulation line. Circulate the pond water by the above method to mix the surface water (high temperature, oxygen saturation) and the deep water (low temperature, oxygen-free state), thereby providing a comprehensive return that suppresses the growth of anaerobic bacteria in the deep part of the pond. It is formed to maximize the circulation effect.

  Second, by providing a large number of venturi nozzles at regular intervals on a circulation line provided around the pond, the shape of the pond varies, and there is a portion that is severely bent. Even so, the circulation effect is further enhanced by guiding the pond water to be recirculated throughout the whole without a blind spot area.

  Thirdly, by using a venturi nozzle as the injection nozzle, oxygen in the air is automatically dissolved in the pond water without any additional power, greatly reducing power costs, and the characteristics of the venturi nozzle. In addition, air is finely released to increase oxygen transfer efficiency, and as a result, the amount of dissolved oxygen is maximized.

  Fourth, a simple chemical solution injection device (Venturi nozzle) is provided, and pond purification control is performed by automatically adjusting the supply amount and mixing ratio without additional power when adding the pond purification agent and effective gas. The efficiency and convenience of have been greatly improved.

  Fifth, the Venturi nozzle connection pipe is connected to the upper part of the circulation line, but it extends long inside the circulation line so that it is always present in the liquid, and unless the gas is dissolved in the liquid, the Venturi nozzle is connected through the Venturi nozzle. In order not to escape outside, all the injected gas is dissolved and used.

  Finally, quantifies the specifications of the circulation pump, the length and diameter of the circulation line, the structure and arrangement interval of the venturi nozzle, the arrangement quantity, and the installation standards of other ancillary facilities to the optimum conditions for each pond size and pond water quality. By doing so, installation costs can be dramatically reduced.

  As described above, the present invention significantly increases the amount of dissolved oxygen in the water that is submerged in the pond, compared with the existing ones, so that the biochemical oxygen demand (BOD) and the chemical oxygen demand (COD: By significantly reducing Chemical Oxygen Demand), it is possible to oxidize and sterilize algae and organic substances in the water that are the source of pollution in the pond, thereby greatly contributing to the purification of the pond.

  The present invention has an extremely high purification effect by arranging a supply pipe along the periphery of the pond and recirculating water to the shallow part of the pond, which is the main generation area of green algae, so as to increase the amount of dissolved oxygen. The gas that is high and useful for water quality management is dissolved by using a supply pipe without providing a separate treatment tank.

  In addition, the present invention is simple in structure and low in installation cost, and can purify the water in the pond efficiently, and can always keep a clean and clean pond.

  Hereinafter, operations and effects of a pond purifier according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

  As shown in FIGS. 1 to 3, the pond purifying apparatus according to the present invention is largely composed of a water intake, a suction part, a pump, and a supply pipe. The water intake 5 located in the deepest layer of the pond, the suction line 3 connected from the water intake to the pump P, the pump equipment, and the water (chemical solution) supplied from the pump P over the entire pond Supply pipe 4 for supplying uniformly, a large number of connection pipes 9 branchingly connected from the supply pipe toward the pond at regular intervals, and connected to the tip of the connection pipe, with the central portion being the atmosphere The venturi nozzle 7 is connected to the intake pipe 6 and communicated thereto, through which water is sprayed from the periphery of the pond toward the center, and the pond water is circulated as a whole in the direction of the arrow. Will do.

  A large number of connecting pipes 9 are branched from the supply pipe 4 at a predetermined interval, and a venturi nozzle having an intake pipe 6 exposed to the outside of the water surface by a predetermined height at the end of each connecting pipe. 7 is provided. Oxygen in the air is automatically sucked in through the intake pipe, and the oxygen that flows due to the pressure difference between the water pressure and the atmospheric pressure generated at this time changes into a state of ultrafine bubbles and is injected into water and dissolved. The Thereby, when compared with a normal fountain or an aeration system, the oxygen transfer effect is several hundred to several thousand times higher, and as a result, the entire pond water is saturated with oxygen.

  On the other hand, by taking water from the deep part of the pond and spraying it from about 20-30 cm below the surface of the pond through a number of venturi nozzles 7, the water in the pond flows not only horizontally but also vertically. As a result, the total reflux is performed, and the water at the peripheral edge of the pond is quickly circulated to the water intake in the deep layer. Such a circulation system not only serves to eliminate the water temperature difference between the low-temperature deep water of the pond and the high-temperature surface water, but also the surface water rich in dissolved oxygen and high inhabiting density of aerobic bacteria. By continuing to supply to the deep layer where anaerobic bacteria have a high density of anaerobic bacteria, the breeding of anaerobic and aerobic bacteria is suppressed, and as a result, the purification of the pond is performed efficiently.

  Further, in the present invention, when it is necessary to use gas (O2, O3) and liquid (microorganism culture solution, other pond purifier) in managing the pond, these can be easily and automatically performed without any additional power. A separate chemical solution injection device 8 using the Venturi tube principle is connected between the discharge port of the pump P and the supply tube 4 so that the supply tube 4 can be injected. Thereby, time, cost, etc. can be reduced significantly compared with the dispersion | distribution method of a granular input agent conventionally.

  Since the supply pipe 4 is piped long along the peripheral edge of the pond, the supply pipe 4 is generally configured to be similar to the shape of the pond, and the pump P is a venturi nozzle connected to the end of the supply pipe. 7 also needs to be designed to create a pressure sufficient to spout water (chemical solution).

  The intake 5 is easy to take in the deep water of the pond and is provided in the deepest layer (deep layer) of the pond, but the intake connected to the venturi nozzle 7 so that the outlet of the venturi nozzle 7 faces the center of the pond. It is preferable that the tip of the tube 6 is provided so as to be exposed to the atmosphere.

  FIG. 4 is an enlarged view showing only the venturi nozzle which is a part of the component of the present invention, and the venturi nozzle 7 is formed so that the cross-sectional area of the middle portion is smaller than the cross-sectional area of the inlet / outlet. The fluid passing through the nozzle 7 has a high flow velocity in the middle, and the pressure is reduced to atmospheric pressure or less by the Bernoulli principle. For this reason, oxygen in the atmosphere flows into the venturi nozzle 7 through the intake pipe 6 and is jetted into the pond together with water (chemical solution) supplied from the connection pipe 9 by water pressure.

  FIG. 5 shows a pipe connection structure according to the prior art, FIG. 6 is a side view showing a second embodiment of the pipe connection structure according to the present invention, and FIG. 7 shows a pipe connection structure according to the present invention. It is a side view which shows 3rd Embodiment of this.

  First, as shown in FIG. 5, when the connection pipe 9 is connected higher than the supply pipe 4, no problem occurs as long as liquid is mixed in the water (chemical solution). As in the embodiment, when the liquid 41 and the gas 42 are separated into upper and lower parts, the gas 42 is located above the connecting pipe 9 and thus may be released without being dissolved in water (chemical solution). Is expensive. In this case, gas useful for water quality management such as O2 and O3 is included in the water (chemical solution), but this causes a waste of effective gas, and as a result, a problem that the purification effect cannot be greatly expected. There is a point.

  On the other hand, as shown in FIG. 6, when the connection pipe 9 is connected lower than the water (chemical liquid) supply pipe 4, the liquid (gas) and the gas are mixed together. However, since the liquid 41 is positioned below the connecting pipe 9, the gas 42 is not released in a state where it is not dissolved in water (chemical solution). For this reason, the embodiment of FIG. 6 does not waste gas contained in water (chemical solution) compared to the embodiment of FIG. 5, and is an even more economical and efficient method. .

  However, when connecting the piping of the pond purification apparatus, first, the supply pipe 4 is piped along the peripheral edge 2 of the pond, and then a number of nozzle connection pipes 9 are connected to the supply pipe at regular intervals. However, as shown in FIG. 6, when the connection pipe is positioned lower than the water (chemical solution) supply pipe, the connection pipe must be connected below the supply pipe. In addition, there is a problem that it is not efficient. In order to improve such a problem, in FIG. 7, the connecting pipe 9 is connected higher than the supply pipe 4, but the end 91 of the connecting pipe is extended to the lower end inside the supply pipe. When connected and configured so as to be always located in the liquid 41 inside the supply pipe, the operation is facilitated, and more efficient purification is performed.

  A cap 92 is coupled to the upper portion of the supply pipe 4, and a nozzle connection pipe 9 is fitted through the cap 92, and the liquid 41 and gas 42 inside the supply pipe 4 leak to the outside around these connections. It is necessary to seal well so that there is no.

  FIG. 8 is an operation explanatory diagram of the chemical solution injection device in the pond purification device. In the present invention, the microorganism culture solution and chemical solution (pond purification agent, etc.) useful for water quality management of water returning to the pond along the supply pipe 4 ) Is provided with a separate chemical liquid injection device 8 configured to automatically inject the liquid).

  As shown in FIG. 8, the chemical injection device 8 is connected in parallel to the supply pipe 4, so that water (chemical solution) automatically supplied from the chemical injection device 8 is constant in the pond via the supply pipe. Can be supplied. That is, the branch pipe 81 of the chemical liquid injector 8 is connected in parallel with the supply pipe, and a chemical liquid injector suction pipe 83 connected from the gas generator or the water purification agent storage tank 84 is provided in the middle of the branch pipe 81. It is connected to a Venturi tube 82 connected in the middle.

  For this reason, when the water that has flowed in through the water intake 5 due to the pressure of the pump P passes through the supply pipe 4, the branch pipe 81 is connected in parallel to the supply pipe. It flows into 81. The water flowing into the branch pipe 81 passes through the Venturi pipe 82. Since the suction pipe 83 connected from the gas generator or the water purification agent storage tank 84 is connected in the middle of the Venturi pipe 82, it is Bernoulli's. In principle, the fluid supplied through the suction pipe 83 flows into the venturi pipe 82, and the fluid supplied into the venturi pipe 82 in this way is mixed with the water that flows into the branch pipe 81. It continues to be supplied to the pond via the supply pipe 4.

  In the case where only water (chemical solution) containing gas (O2, O3, etc.) useful for water quality management is to be included, reference numeral 84 corresponds to a gas generator, and water (chemical solution) is useful for water quality management (pH regulator, In the case where it is desired to include only algae, a photosynthetic blocking agent, a flocculant, a microbial preparation, etc., reference numeral 84 corresponds to a water purification agent storage tank. Further, when it is desired to include both gas and liquid in the water (chemical solution), reference numeral 84 corresponds to both the gas generator and the water purification agent storage tank. This chemical solution injection device 8 has a simple structure, has low construction costs, operation costs, and maintenance costs, and has the advantage that gas and liquid can be injected with a single facility.

  If you want to supply water (chemical solution) that contains gas useful for water quality management, the process of mixing the gas and water is necessary to supply the pond with this gas sufficiently dissolved (mixed) in water. In the present invention, this is solved by the method shown in FIG.

  At the front part of the supply pipe 4, a connecting part 9 and a venturi nozzle-less dissolving part 44 are formed to have a length sufficient to mix gas and water, and at the rear thereof, a discharge with a connecting pipe 9 and a venturi nozzle 7 is provided. The part 45 is connected integrally.

  The supply pipe 4 is a sealed space in which the end of the pipe is closed, and the dissolution part 44 serves as a kind of dissolution treatment tank. Therefore, even if there is no treatment tank or expensive dissolution tank, the supply pipe 4 is completely dissolved. There is an advantage that can be done.

  In the illustrated example, the supply pipe 4 is piped along the peripheral edge of the pond, and the ratio of the length of the dissolving part 44 and the discharge part 45 of the supply pipe is arbitrarily determined according to the pipe diameter, pump pressure, and type of gas used. Can be adjusted.

  The pond purification apparatus of the present invention configured as described above operates when the pond becomes cloudy. At this time, the turbid water in the pond flows into the supply pipe 4 by the pump P through the water intake 5 and the pump. After that, it is injected into the pond at high pressure via the connecting pipe 9 and the venturi nozzle 7.

  When this is operated for a predetermined time or longer, the air flowing in through the intake pipe 6 exposed on the surface of the water is sucked in due to a pressure difference generated when passing through the venturi nozzle 7, and then in the state of fine bubbles. Dissolved in Thereby, when compared with a normal fountain system, it is possible to maintain a dissolved oxygen amount that is 12 to 20 times higher in oxygen transmission efficiency.

  As described above, the present invention significantly increases the dissolved oxygen amount to lower the biochemical oxygen demand (BOD) and the chemical oxygen demand (COD), thereby causing algae and organics that are the source of pond pollution. All substances can be oxidized, and there is an advantage that even anaerobic bacteria and viruses can be sterilized and disinfected.

  Furthermore, the supply pipe 4 provided along the peripheral edge of the pond, that is, along the boundary, is severely bent and can be easily installed even in a shallow portion, and jets low-temperature water in the deep pond. As the abundant amount of water is newly supplied, organic matter is oxidized, nutrients such as algae are cut off, and the purification of pond water continues.

The top view for demonstrating the 1st Embodiment of this invention. The side view for demonstrating the 1st Embodiment of this invention. The side view which shows 1st Embodiment of the piping connection structure by this invention. The sectional side view which expands and shows only the venturi nozzle used as the principal part of this invention. The side view which shows the piping connection structure by a prior art. The side view which shows 2nd Embodiment of the piping connection structure by this invention. The side view which shows 3rd Embodiment of the piping connection structure by this invention. Operation | movement explanatory drawing of the water (chemical | medical solution) injection | pouring apparatus in the purification apparatus of a pond. The top view for demonstrating the 2nd Embodiment of this invention. The top view for demonstrating the purification apparatus of the pond by a prior art.

Explanation of symbols

1 Pond (also tank and reservoir) or pond water 2 Peripheral line of pond 3 Suction line 4 Water (chemical liquid) supply pipe 5 Water intake 6 Intake pipe 7 Venturi nozzle 8 Chemical liquid injector 9 Connection pipe 41 Liquid 42 Gas 44 Dissolving part 45 Discharge Part 81 Branch pipe 82 Venturi pipe 83 Chemical solution injector suction pipe 84 Gas generator or water purification agent storage tank 91 End 92 Cap

Claims (6)

In the pond purification apparatus for increasing the amount of dissolved oxygen in the pond by injecting the water supplied from the pump (P) into the pond,
A water intake (5) located in the deep part of the pond, a suction line (3) connected from the water intake to the pump (P), and water (chemical solution) supplied from the pump (P) A supply pipe (4) for supplying uniformly over the whole, a large number of connection pipes (9) branched and connected at regular intervals from the supply pipe toward the pond, and at the tip of the connection pipe And a venturi nozzle (7) connected to the intake pipe (6) connected to the atmosphere at the center, and pond water is jetted through this, and the finally jetted water is taken in. A pond purification device characterized by being quickly recirculated to the mouth (5). A large amount of oxygen is provided at regular intervals so that the tip of the intake pipe (6) connected to the middle of the nozzle of the venturi nozzle (7) is exposed to the atmosphere, and a large amount of oxygen is automatically added without a separate power unit. 2. The pond purifier according to claim 1, wherein the pond purifier is supplied to the pond. Separate chemical injection device (8) for supplying gas (O2, O3, etc.) and liquid (pH regulators, algicides, photosynthetic blockers, flocculants, microbial agents, etc.) useful for water quality management to the pond The chemical injection device includes a branch pipe (81) connected in parallel to the supply pipe (4), a venturi pipe (82) connected to a middle portion of the branch pipe, and a gas generator or water quality And a suction pipe (83) connected to a middle part of the venturi pipe from the purifier storage tank (84), and the gas and liquid can be easily and automatically supplied to the pond without providing a separate power unit. The pond purifier according to claim 1, wherein the pond purifier is supplied and supplied. The purification of the pond according to claim 1, wherein the connection pipe (9) is provided lower than the supply pipe (4) to achieve 100% solubility, thereby maximizing the efficiency of the dissolution treatment. apparatus. The connection pipe (9) is connected higher than the supply pipe (4), but the end (91) of the nozzle connection pipe (9) is connected to the inside of the water (chemical solution) supply pipe (4) from the connection point. The pond purifier according to claim 1, characterized in that it is long connected to the lower end of the tank and is always located in the liquid (41) inside the supply pipe (4). A connecting part (9) and a venturi nozzle (7) are not connected to the front part of the chemical liquid supply pipe (4), and a dissolving part (44) is formed with a length sufficient to mix the gas with water, 2. The pond purifier according to claim 1, wherein a discharge portion (45) to which the connecting pipe (9) and the venturi nozzle (7) are coupled is integrally connected to the rear side thereof.

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