JP4194863B2 - Bottom mud quality improvement device with high concentration oxygen supply mechanism - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bottom mud quality improvement device with a high-concentration oxygen supply mechanism, particularly for improving the water quality in a closed water area such as a lake, a dam, etc., keeping the bottom mud in an aerobic state and alkaline by spraying a neutralizing agent. The microorganism is activated by the atmosphere to suppress bottom mud water purification and phosphorus elution.
[0002]
[Prior art]
As a device for supplying oxygen to the bottom layer for water treatment of lakes and the like, a deep layer aeration method and a land-mounted oxygen supply method are known.
Of these, the on-shore oxygen supply method pumps up bottom water with a pump installed on land, dissolves oxygen through a supply pipe with an oxygen dissolver, and returns the oxygen water to the bottom.
[0003]
In addition, as an apparatus for the deep layer aeration method, for example, a vertical flow treatment tank is suspended to the vicinity of the bottom of the tank, and a return plate having a substantially arc shape is provided at a desired depth on the outer periphery. An expanded pipe section that expands in a flower shape, an inner cylinder pipe for descending water flow with a frustoconical raised head in the expanded pipe section, and a concentric arrangement from the upper end to the required position on the outer periphery of the inner cylinder pipe An outer cylinder tube for the lowering aerated water flow formed, an air supply pipe for creating an aerobic atmosphere provided at the upper end portion of the outer cylinder tube, and an inlet at each upper end portion of the inner cylinder tube and the outer tube tube And an impeller for forming a descending water flow in the inner tube and the outer tube is provided on the ground portion so as to be rotatable by a motor as a drive source (see, for example, Patent Document 1). .
[0004]
[Patent Document 1]
JP-A-9-239395 (first to fourth pages, FIGS. 1 and 6)
[0005]
[Problems to be solved by the invention]
However, in the conventional deep layer aeration method described in Patent Document 1, air is ejected from the air supply pipe attached to the outer peripheral portion of the outer cylindrical tube so as to face the upper end portion of the inner cylindrical tube. As a result, the water flow descends in the outer cylindrical pipe and is guided by a return plate provided at a desired depth on the outer periphery of the inner cylindrical pipe to be exchanged as an upward return flow. Then, when the impeller provided facing the upper end portions of the inner and outer cylindrical tubes is rotated by driving the motor, the surface water is aerated and becomes a descending water flow, and descends in the inner cylindrical tube. . Thus, lowering the water flow to be transferred to the inner cylinder tube is vigorously ejected at the bottom layer close to the lake from the frustoconical raised head provided in the expanded portion for expanding the flower-shaped lower end of the inner tube, A jet is formed. Accordingly, the bottom layer mud is suspended, and the bottom layer water returns to the surface layer, which causes problems such as diffusion of contaminants.
[0006]
Moreover, the above-mentioned conventional oxygen supply method of the land installation type first pumps bottom layer water such as a lake by a pump installed on land. Then, oxygen is dissolved in the water pumped up through the supply pipe by the oxygen dissolving device. Then, since it is the method of returning the water in which oxygen was dissolved in this way to the bottom layer such as a lake, the water temperature would rise by about 3 to 5 ° C. while the dissolved oxygen water was returned to the bottom layer. Therefore, the dissolved oxygen water that has been dissolved and returned to the bottom layer is not fixed in the bottom layer, causing heat convection and causing problems such as destroying the thermal stratum, which hinders water treatment. It was.
[0007]
In addition, both of the conventional deep layer aeration method described in Patent Document 1 and the conventional oxygen supply method of the land-installed type are used to adjust the pH required to promote the activity of microorganisms for water treatment. The company did not adopt a policy of spraying the neutralizing agent over the treated water.
[0008]
The present invention has been made in order to solve the above-mentioned conventional drawbacks, and without causing sludge in the bottom mud layer such as lakes to float and disperse pollutants in the surroundings, or the temperature rises and heat convection does not occur. , Supply the necessary moderate oxygen, promote the activity of microorganisms, efficiently suppress water purification and phosphorus elution, and also the structure is simple and easy to maintain and inspect, making and assembling It is an object of the present invention to provide a bottom mud quality improving apparatus with a high concentration oxygen supply mechanism part which can be easily performed and whose manufacturing cost and equipment cost are low.
[0009]
[Means for Solving the Problems]
The present invention solves the above conventional disadvantages, and the invention according to claim 1 is a floating body that floats on the surface of a closed water area such as a lake, an oxygen generation mechanism section and an oxygen compression mechanism section provided on the floating body, A submersible pump as a drive source connected to an oxygen dissolution tank, water supplied from the submersible pump, and oxygen pumped from the oxygen compression mechanism are mixed by sucking water below the surface of the closed water area. The oxygen supply mechanism comprising an ejector that is pumped together into the oxygen dissolution tank and a spray nozzle provided outside the oxygen dissolution tank is moved up and down through a hoist near the bottom mud layer in the closed water area. The means of being suspended from the floating body as possible was adopted.
[0010]
The invention according to claim 2 of the present invention is the invention according to claim 1, wherein the oxygen supply mechanism section is configured to inject high-concentration oxygen water that is injected from the spray nozzle around the towing line of the hoisting machine. Using the reaction force, the means is characterized in that the installation position is adjustable and can be turned.
[0011]
According to a third aspect of the present invention, in the first or second aspect of the present invention, the oxygen supply mechanism section is provided with an injection means so that the injection water injected from the injection means in the closed water area. Adopted the feature that the bottom mud layer is provided so as to be deeply plowable.
[0012]
Moreover, the invention according to claim 4 of the present invention is that, in any one of claims 1 to 3 , a neutralizing agent is applied to the spray body of the oxygen supply mechanism section through the chemical solution supply pipe. By providing a neutralizing agent supply port that can be supplied, the neutralizing agent was mixed with the high-concentration oxygen water so that it can be sprayed from the spray nozzle to the bottom mud layer.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, specific examples of embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a piping diagram showing an embodiment of a bottom mud quality improving apparatus with a high-concentration oxygen supply mechanism of the present invention.
[0014]
Reference numeral 1 denotes a floating body that floats on a deep water surface 2a in a closed water area 2 such as a lake or a dam. On the floating body 1, an oxygen generation mechanism section 3 and an oxygen compression mechanism section 4 are provided.
5 is a submersible pump as a drive source connected to the oxygen dissolution tank 6. This submersible pump 5 is connected in parallel with the ejector 7, and the water W near the bottom mud layer T below the water surface 2 a of the closed water area 2. For inhalation. The submersible pump 5 mixes the water W1 supplied after inhalation and the oxygen O ₂ pumped from the oxygen compression mechanism 4 and pumps them together into the oxygen dissolving tank 6; An oxygen supply mechanism 9 comprising a spray nozzle 8 provided outside the oxygen dissolution tank 6 can be moved up and down from the floating body 1 to the bottom 2b of the closed water area 2 near the bottom mud layer T via a hoist 10. Suspended by. The deep layer is about 30 to 80 m.
[0015]
The floating body 1 has a sufficient buoyancy when it is floated on the surface 2b of a closed water area 2 such as a lake or a dam by forming a hollow interior sealed with, for example, a synthetic resin or a metal plate. ing. The entire floating body 1 may be integrally formed, or a plurality of floating bodies 1 may be coupled to each other using a connecting member. Further, the outer shape of the floating body 1 is not limited to that shown in the figure, and is appropriately formed, and the size thereof is freely set.
[0016]
The hoisting operation of the tow rope 11 of the hoisting machine 10 is automatically performed by using the motor as a driving source, which is not shown in the drawing, and the hoisting operation and the feeding operation of the hoisting machine 11 of the hoisting machine 10 are automatically performed. The installation distance H of the oxygen supply mechanism unit 9 with respect to the bottom mud layer T, particularly the installation distance H of the spray nozzle 8, is adjusted. At this time, using a sensor not shown in the figure, the motor of the hoisting machine 10 is started, stopped, rotated, and the like by controlling the direction of rotation and the like, and extending and retracting the tow rope 11 to extend the bottom mud layer T of the spray nozzle 8. The installation distance H from can be easily adjusted.
[0017]
Further, the oxygen supply mechanism 9 can adjust the installation position by utilizing the reaction force at the time of injection of the high-concentration oxygen water W2 injected from the spray nozzle 8 around the tow rope 11 of the hoisting machine 10. Is provided so as to be pivotable. At this time, the hoisting operation and the feeding operation of the tow rope 11 of the hoisting machine 10 are automatically performed using a motor although not shown in the drawing.
[0018]
Further, the oxygen supply mechanism 9 is provided with the injection means 12 so that the bottom mud layer T in the closed water area 2 can be deeply plowed by the injection water W3 injected from the injection means 12. Moreover, although the injection means 12 uses an injection nozzle in the present embodiment, the injection direction of the injection nozzle, the distance to the bottom mud layer T, and the deep plowing depth can be automatically and freely selected.
[0019]
Further, the floating body 1 is provided with a neutralizing agent supply port 14 on the water surface 2b through which the neutralizing agent S can be supplied to the spray nozzle 8 of the oxygen supply mechanism 9 via the chemical solution supply pipe 13. The PH is adjusted by mixing the neutralizing agent S with the high-concentration oxygen water W2 from the chemical solution supply pipe 13, and provided so as to be sprayed from the spray nozzle 8 to the bottom mud tank T.
[0020]
15 is a float type oxygen relief valve provided for the oxygen dissolution tank 6 in the middle of a transfer pipe 16 connected between the oxygen generation mechanism 3 on the water surface 2a and the oxygen dissolution layer 6 below the water surface 2b. It is.
[0021]
Reference numeral 17 denotes a water amount adjusting valve provided upstream of the submersible pump 5 and the ejector 7.
[0022]
Reference numeral 18 denotes a throttling mechanism for quickly and efficiently exerting the spray pressure of the spray nozzle 8.
[0023]
One embodiment of the present invention has the above-described configuration. In a closed water area 2 such as a lake or a dam, an oxygen generation mechanism unit 3 and an oxygen compression mechanism unit 4 are provided on a floating body 1 floated on a water surface 2a in a deep layer. Since it is provided, the oxygen O ₂ generated by the oxygen generation mechanism unit 3 is compressed by the oxygen compression mechanism unit 4 to a high concentration. This high-concentration oxygen O ₂ is supplied to the floating body 1 via the tow rope 11 to the ejector 7 suspended near the bottom mud layer T below the surface 2b of the closed water area 2 through the oxygen supply pipe 4A. Injected from a nozzle (not shown in the figure) provided in the ejector 7 to the front stage of the submersible pump 5 arranged in parallel to the ejector 7.
[0024]
When the submersible pump 5 is driven, the water W near the bottom mud layer T in the closed water area 2 such as a lake or a dam is sucked into the submersible pump 5, and then the water W1 is connected to the submersible pump 5 in parallel. As described above, oxygen O ₂ and water W1 pumped from the oxygen compression mechanism 4 are mixed by the ejector 7 and driven by the submersible pump 5 as described above. 6 are pumped together.
[0025]
Thereafter, a desired amount of high-concentration oxygen O ₂ is dissolved in the oxygen dissolution tank 6 and sprayed from the spray nozzle 8 into the water near the bottom mud layer T in the closed water area 2. Therefore, necessary and sufficient oxygen O ₂ is supplied to the aerobic microorganisms and activated, and the action of the microorganisms can be promoted and used for the purification of the water W.
[0026]
At this time, the water W mixed with the oxygen O ₂ by the ejector 7 is directly pumped from the bottom layer water without the hose by the drive pump 5 being driven, and is ejected from the spray nozzle 8. There is no temperature rise.
Therefore, unlike the above-mentioned conventional oxygen supply method on land, for example, oxygen is dissolved through a supply pipe by an oxygen dissolving device and oxygen-dissolved water is returned to the bottom mud layer of the lake. While oxygen water is returned from the land to the bottom layer of the lake, etc., the water temperature rises by about 3-5 ° C, and the dissolved oxygen water that is dissolved and returned to the bottom layer is not settled in the bottom mud layer. Inconveniences such as thermal convection and destruction of the thermal climatic layer do not occur.
[0027]
Further, since the neutralizing agent supply port 14 is provided on the water surface 2 b by the floating body 1 and is connected to the front stage of the spray nozzle 8 through the chemical supply pipe 13, the neutralizing agent S is supplied from the neutralizing agent supply port 14. Since it is supplied to the spray nozzle 8 via the chemical supply pipe 13 and sprayed from the spray nozzle 8 to the bottom mud layer T, the microorganisms are activated by adjusting the pH easily and creating a weakly alkaline atmosphere. , Phosphorus elution can be suppressed.
[0028]
Further, when high-concentration oxygen water is injected from the spray nozzle 8 into the water near the bottom mud layer T of the closed water area 2 such as a lake or a dam, the high-concentration oxygen mechanism suspended from the floating body 1 via the tow rope 11 The part 9 can turn around the tow rope 11 by the reaction force when the high-concentration oxygen water W2 injected from the spray nozzle 8 is injected. Therefore, the installation position of the high-concentration oxygen mechanism 9 can be adjusted and moved without being obstructed by obstacles such as driftwood existing in the bottom mud layer T, and the high-concentration oxygen water W2 can be widely distributed from the spray nozzle 8. Can be sprayed and sprayed.
[0029]
Furthermore, since the oxygen supply mechanism section 9 is provided with the injection means 12, the bottom mud layer T in the closed water area 2 is deeply plowed by the injection water injected from the injection means 12. Then, the high concentration oxygen water W2 can be sprayed from the spraying means 12 evenly and uniformly to the bottom mud layer T for deep plowing.
At this time, an injection nozzle is used as the injection means 12 in this embodiment. The injection direction of the injection nozzle and the distance to the bottom mud layer T are detected using a sensor, and automatically based on the detection signal. The bottom mud layer T in the closed water area 2 can be deeply plowed to a desired depth.
[0030]
In the above embodiment, the water quality improvement in the deep layer of the lake has been representatively described. However, the application of the present invention is not limited to this, and the design can be easily changed.
[0031]
【The invention's effect】
The invention according to claim 1 of the present invention includes a floating body that floats on the surface of a closed water area such as a lake, an oxygen generation mechanism section and an oxygen compression mechanism section that are provided on the floating body, and water under the surface of the closed water area. A submersible pump as a drive source that is inhaled and connected to the oxygen dissolving tank, water supplied from the submersible pump and oxygen pumped from the oxygen compression mechanism are mixed together in the oxygen dissolving tank An oxygen supply mechanism composed of an ejector to be pumped and a spray nozzle provided outside the oxygen dissolution tank is suspended from the floating body so that it can be moved up and down via a hoist near the bottom mud layer of the closed water area. It is characterized by floating mud in the bottom layer of lakes and marshes and spreading pollutants in the surrounding area, raising the temperature and generating heat convection, supplying the necessary moderate oxygen and increasing the activity of microorganisms. Encourage efficient water purification and phosphorus It is possible to suppress the output, and further, the structure is simple maintenance and inspection can be easily and reliably performed, moreover manufacture, assembly is easy to, manufacturing cost and equipment cost is inexpensive.
[0032]
The invention according to claim 2 of the present invention is the invention according to claim 1, wherein the oxygen supply mechanism section is configured to inject high-concentration oxygen water that is injected from the spray nozzle around the towing line of the hoisting machine. Since the installation position can be adjusted and swiveled using the reaction force, the installation position can be adjusted and moved, so high-concentration oxygen water is sprayed from the spray nozzle over a wide area. Can be sprayed.
[0033]
According to a third aspect of the present invention, in the first or second aspect of the present invention, the oxygen supply mechanism section is provided with an injection means so that the injection water injected from the injection means in the closed water area. Since the bottom mud layer is provided so that it can be deeply cultivated, it is possible to spray the bottom mud layer by spraying high-concentration oxygen water uniformly and uniformly from the spray nozzle.
[0034]
Moreover, the invention according to claim 4 of the present invention is that, in any one of claims 1 to 3 , a neutralizing agent is applied to the spray body of the oxygen supply mechanism section through the chemical solution supply pipe. By providing a neutralizing agent supply port that can be supplied, the neutralizing agent is mixed with high-concentration oxygen water so that it can be sprayed from the spray nozzle to the bottom mud layer. Since it is supplied to the front stage of the spray nozzle through this chemical solution supply pipe and sprayed from the spray nozzle to the bottom mud layer, the pH is easily adjusted to suppress elution of phosphorus by making a weak alkaline atmosphere, Microorganisms can be activated.
[Brief description of the drawings]
FIG. 1 is a piping diagram showing an embodiment of a bottom mud quality improving apparatus with a high-concentration oxygen supply mechanism according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Floating body 2 Closed water area 2a Above water surface 2b Below water surface 3 Oxygen generation mechanism part 4 Oxygen compression mechanism part 5 Submersible pump 6 Oxygen dissolution tank 7 Ejector 8 Spray nozzle 9 Oxygen supply mechanism part 10 Hoisting machine 11 Towing rope 14 Neutralizing agent supply Mouth W Water W2 High-concentration oxygen water

Claims (4)

  A floating body that floats on the surface of a closed water area such as a lake, an oxygen generation mechanism section and an oxygen compression mechanism section provided on the floating body, and a drive source that sucks water below the surface of the closed water area and is connected to an oxygen dissolution tank A submersible pump, an ejector that mixes water supplied from the submersible pump and oxygen pumped from the oxygen compression mechanism, and pumps the oxygen together in the oxygen dissolving tank, and outside the oxygen dissolving tank A bottom with a high-concentration oxygen supply mechanism, characterized in that an oxygen supply mechanism comprising a spray nozzle provided is suspended from the floating body so as to be movable up and down via a hoist near a bottom mud layer in the closed water area Mud quality improvement device.   The oxygen supply mechanism section is provided so that the installation position can be freely adjusted using a reaction force at the time of injection of high-concentration oxygen water injected from the spray nozzle around the towing line of the hoisting machine. The bottom mud quality improvement apparatus with a high concentration oxygen supply mechanism part of Claim 1 characterized by these. 3. The oxygen supply mechanism according to claim 1 or 2, wherein the oxygen supply mechanism is provided with an injection means so that a bottom mud layer in the closed water area can be deeply cultivated by the injection water injected from the injection means. The device for improving bottom mud quality with the high-concentration oxygen supply mechanism described. The floating body is provided with a neutralizing agent supply port through which a neutralizing agent can be supplied to the spray nozzle of the oxygen supply mechanism through a chemical solution supply pipe, thereby mixing the neutralizing agent with high-concentration oxygen water. hyperoxia supply mechanism section with the bottom mud quality improving apparatus according to any one of claims 1 to 3 which is characterized in that arranged to be sprayed in the sediment layer from the spray nozzle.

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