JPH0810795A - Automatic purifying device for lake and pond - Google Patents

Abstract

PURPOSE:To prevent the deep layer water, etc., in a closed water basin from attaining an aerobic state and to improve purification efficiency by providing a device for executing waving by mixing the atm. air with the inside of the lifted water and ejecting and dropping the mixture with an automatic pH monitor device including a pH measuring instrument, alkaline dissolving and supplying device, etc. CONSTITUTION:This purifying device 10 to be installed in a lake pond 41, etc., is constituted by packing catalytic packing materials 14 into a frame body 12 enclosed by meshed catalytic materials 13 and installing a submersible aeration pump 11 which executes waving by mixing the bubbled atm. air with the inside of the lifted water and ejecting and dropping the mixture to the upper part of a water conduit gap 15 formed in the central part of this frame body 12. The pH of the water in the lake or pond lifted by a sampling pump 21 is measured by a pH meter 22 at the time of a purification operation. The driving of a supplying pump 23 is controlled in accordance with the measured pH value and the required amt. of the alkaline soln. in an alkaline dissolving and storing tank 24 is supplied into the lake or pond 41 and an alkaline soln. is intimately mixed therewith by a stirring machine, by which the alkaline soln. is dispersed into the water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic purifying apparatus for purifying obstructive water bodies, and more particularly, to various cultivation ponds, agricultural ponds, or regulating ponds that have been rendered oligotrophic or eutrophic by acidification. The present invention relates to an automatic purification system for lakes and marshes capable of improving a water environment by enhancing a natural purification function of a water-stop or semi-static lake or the like.

[0002]

2. Description of the Related Art Aquaculture ponds, artificial lakes and ponds for agricultural ponds, various types of regulating ponds, or occluded water areas such as lakes and eutrophications caused by the inflow of nutrient salts accompanying the inflow of domestic wastewater,
The bottom surface easily becomes anaerobic, and nutrient salts such as nitrogen and phosphorus, sulfides, organic substances, etc. elute in the summer when the water temperature rises,
Significantly adversely affects landscape and water quality. For example, in aquaculture ponds and eutrophic lakes, an increase in nutrients increases the production of phytoplankton such as cyanobacteria, green algae, and flagellates, which further accelerates eutrophication. Abnormal occurrence of algae such as freshwater red tide and blue-green algae, filtration problems in water supply facilities, deterioration of water quality such as unpleasant odor of water, induction of fish death, and deterioration of landscape as a tourist destination. . The main cause of such deterioration of water quality is that oxygen in the water is consumed by the respiratory action of microorganisms in the sediment, and the surface of the sediment and deep water are brought into an anaerobic state.

[0003] On the other hand, acidification of lakes and mars due to acid rain induced by the change of sulfur oxides and nitrogen oxides emitted from fossil fuel combustion to sulfuric acid and nitric acid in the atmosphere has become apparent, Lakes with low buffering capacity, reduced alkalinity in water, and markedly lowered pH become apparent in part of the area of non-limestone substrates mainly composed of granite or silicate substrates, and changes in water quality due to acidification of such lakes Is
Fish toxicity due to reduced alkalinity, reduced phosphorus concentration, and increased aluminum. Prolonged changes in water quality reduce species, reduce the rate of nutrient degradation, and reduce the rate of circulation in the water environment. The lake water of such acidified lakes is clear and has high transparency, so it seems at first glance that the water quality is clear, but in reality it is a lake whose biological system has been destroyed. This is the current situation.

[0004] Conventionally, for example, the oxygen in the atmosphere is sucked into the pumping water by the backward-moving special impeller action, and the mixed water that has been bubbled is mixed with the high-pressure jet again, and is spouted and dropped into the sky in a morning glory shape to produce a ripple action. Submersible aeration pumps are commercially available
As a result, a method for preventing water from being brought into an anaerobic state is known. In addition, as a method of improving the sediment environment, use civil engineering techniques such as dredging, cultivation, earth covering, etc., chemical input methods such as lime, fly ash, sodium aluminate, and zirconium, and use both civil engineering techniques and chemical input methods. Methods and the like are known.

[0005]

However, the submersible aeration pump has a problem that it cannot prevent the bottom surface and the deep water from becoming anaerobic.
Also, for example, in civil engineering techniques to remove sludge by dredging, secondary pollution due to sludge roll-up, effects on fish by hydrogen sulfide produced by sulfate-reducing bacteria, dehydration of dredged sludge or landfill There was a problem that it was necessary to take measures against the pollution of the surrounding environment, such as sewage leaching during storage before disposal.

The present invention was devised in view of the above circumstances, and the problem to be solved is to prevent the bottom surface and deep water of an obstructive water area from becoming anaerobic, and It is to make the best use of the purifying action of. Its purpose is to prevent eutrophication of closed water bodies such as aquaculture ponds, artificial lakes for agricultural reservoirs, various regulating ponds, and lakes and marshes where nutrients flow in with domestic wastewater. By improving and / or improving the water environment of acidified lakes and marshes, abnormal occurrence of algae such as freshwater red tide and blue-green algae, filtration problems in water supply facilities,
It can prevent deterioration of water quality such as off-flavor of water, death of fish, etc., and can purify eutrophic or oligotrophic water in obstructive water bodies such as lakes and marshes to the water quality that satisfies agricultural water discharge standards. It is still another object of the present invention to provide a lake / marsh automatic purification apparatus which can beautify the landscape of the surrounding environment such as a lake / marsh.

[0007]

[Means for Solving the Problems] In order to solve the above-mentioned problems, the means adopted by the present invention is, in the invention described in claim 1, "aeration in the pumped water pumped by a submersible aeration pump. An automatic purification device for an obstructing water area, which mixes the atmosphere and jets and drops it to cause a wave action, comprising a frame body,
A water-conducting void defined in the central portion of the frame, a mesh-like contact material provided over the entire surface of the frame, a contact filler filled inside the mesh-like contact material, and the water-conducting void. At least one purification device having a configuration including an underwater aeration pump fixedly installed on the upper part of the water, at least one or more floats fixed to the frame, a sampling pump for pumping lake water, and the sampling pump. A pH measuring device comprising a pH meter for measuring the pH of the pumped up lake water; an alkaline solution storage tank;
An alkaline solution supply device that supplies the alkaline solution stored in the alkaline solution storage tank based on the pH value measured by the H measuring device, and an alkaline solution supply device that is arranged in the vicinity of the alkaline solution supply device PH automatic monitoring device comprising a stirrer for mixing the prepared alkaline solution with lake water, the submersible aeration pump, and the pH
The automatic purification device for lakes and marshes is characterized by "a measuring device, an alkaline solution supply device, and a power source for energizing the stirrer".

The invention according to claim 2 is characterized in that "a water conduit provided in the purifying device is detachably provided with a water conduit extending below the frame". The automatic purification device for lakes and marshes according to claim 2 is characterized in that in the invention according to claim 2, "the submersible aeration pump is provided with a device for adjusting a falling diameter". The automatic purification device for lakes and marshes according to claim 4, wherein in the invention according to claim 4, "the stirrer is a frame, a water guiding void defined in a central portion of the frame, and the frame". The knitted contact material is provided on the entire surface of the, and fixedly installed on the upper portion of the water guiding space provided in the purification device configured to include a contact filler filled inside the knitted contact material, It is a stirrer that moves in the vertical direction while mixing bubbled air with the surface water of lakes and marshes. " The automatic cleaning device of lakes according to claim 1 having the features, respectively and their contents.

[0009]

According to the apparatus for automatically purifying lakes and marshes according to the first aspect of the present invention, first, as shown in FIG. 1, the purifying device 10 is provided with a frame 12 and the frame 12. Coaxial columnar water-guiding gap 15 and meshed contact material 1 made of polyethylene or polypropylene provided on the entire surface of frame 12
3 and a contact filler 14 of an appropriate shape made of polyethylene or polypropylene filled in the gap between the outer periphery of the frame and the water introduction gap 15. Nitrogen contained in the water being conducted,
Nutrients such as phosphorus, sulfides, or organic matter, algae such as blue-green algae, and sludge such as sludge can be easily absorbed and removed, and these can be biologically treated, and the adsorbed algae and sludge can be removed. Sludge such as can be cleaned very easily as needed.

The submersible aeration pump 11 provided at the upper part of the water introduction gap 15 is used to contact deep water near the bottom of the water introduction gap 15 directly from the bottom and with water filled around the outer periphery of the frame 12. The structure is such that water is guided to the water introduction gap 15 via the filler 14, and in particular, since deep water near the bottom of the water introduction gap 15 has a small water conveyance resistance, the water flows into the water introduction gap 15 via the filled contact filler 14. Since it can be pumped more easily than the water that is conducted, the deeply anaerobic water is pumped together with the sludge deposited on the surface of the sediment,
This can be handled.

Further, the submersible aeration pump 11 sucks oxygen in the atmosphere into the pumping water by the backward-moving special impeller function, mixes the bubbled mixed water into the high-pressure jet again, and forms a morning glory into the sky. It is a submersible aeration pump that squirts and drops to create a ripple effect, and the purifying device 10 can be installed in a lake in a state of being suspended on the surface of the lake, and in particular, a plurality of purifying devices 10 can be installed on the surface of the lake at appropriate intervals. When installed, the purifying device 10 provides a beautiful fountain scenery on the water surface of the lake, together with the purifying device for improving the water quality of the lake, and also acts as a device for maintaining or beautifying the scenery of the surrounding environment.

Next, an automatic pH monitoring device includes a sampling pump for pumping lake water, a pH meter for measuring the pH of the lake water pumped by the sampling pump, and a pH automatic monitoring device. And an alkaline solution supply device that supplies the required amount of the alkaline solution stored in the alkaline solution storage tank based on the pH value measured in step 1. And the pH of the lake water can be maintained near neutrality.

Next, since the stirrer is arranged in the vicinity of the alkaline solution supply device, the alkaline solution supplied from the alkaline solution supply device and the lake water are immediately mixed to form a stirrer. It can be evenly distributed.

Next, according to the automatic purification device for lakes and marshes described in claim 2, each device acts in the same manner as the corresponding devices described in claim 1, while the water conduit 1 extends below the frame.
Since 7 is detachably provided in the lower part of the water guiding space 15, the deep anaerobic lake water is pumped up together with the sludge deposited on the bottom surface and treated. Can be done.

Next, according to the automatic purification device for lakes and marshes of claim 3, since the submersible aeration pump is equipped with a device for adjusting the drop diameter, the drop diameter can be freely changed. It can be installed and used even if the lake, such as an aquaculture pond, an agricultural pond, or a regulating pond, is small.

Next, according to the automatic lake purification apparatus of claim 4, the frame body 32, the water guiding space 35 defined in the central portion of the frame body 32, and the entire surface of the frame body 32 are provided. The stirrer 31 having a purifying device having a configuration including the knitted contact material 33 to be formed and the contact filling material 34 filled inside the knitted contact material 33 is provided, whereby surface water of a lake and marsh is formed. As it is configured to mix the bubbled air into the lake and mix it toward the bottom of the lake, it is possible to supply oxygen to deep water in an anaerobic state and improve it to an aerobic state. , Nutrient salts such as nitrogen and phosphorus contained in the lake water introduced into the water guiding gap 35 through the contact filler 34 filled with water around the outer periphery of the frame 32, sulfide,
Alternatively, organic matter, algae such as blue-green algae, and sludge such as sludge can be easily adsorbed and removed by the contact material 33 and the contact filler 34 filled inside the contact material 33, and these can be biologically removed. Therefore, the alkaline solution supplied from the alkaline solution supply device and the lake water can be immediately mixed to evenly disperse them.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described more specifically and in detail with reference to the drawings. However, this is a typical one, and the present invention is not limited by the present embodiment. . FIG. 1 is a cross-sectional view showing a purifying device according to the present invention, FIG. 2 is a flow sheet diagram of a pH automatic monitoring device according to the present invention, and FIG. 3 is an embodiment of an agitator according to the present invention. FIG. 4 is a sectional view showing the same, and FIG. 4 is an installation plan view of one embodiment in which the automatic purification device according to the present invention is installed.

The automatic purification system for lakes and marshes of Example 1 is an automatic purification system for lakes and marshes equipped with an underwater aeration pump that mixes bubbled air into pumped pumped water and jets and drops it to perform wave action. A pH measuring device comprising at least one or more purification device, a sampling pump for pumping the water of the lake and marshes, and a pH meter for measuring the pH of the water of the marshes and marshes pumped by the sampling pump;
An alkaline solution supply device that supplies the alkaline solution stored in the alkaline solution storage tank, and a stirrer that is disposed near the alkaline solution supply device and mixes the alkaline solution supplied from the alkaline solution supply device PH automatic monitoring device consisting of the constitution, the submersible aeration pump and the pH
It is composed of an automatic monitoring device (including a pH measuring device and an alkaline solution supply device) and a power supply unit for energizing the agitator.

First, as shown in FIG. 1, the purifying device 10 has a cylindrical frame body 12 having an outer diameter of 160 cm and an inner diameter 6 of 6.
The 6 cm coaxial cylindrical water guiding space 15 has a basic skeleton structure including six support bodies vertically and outwardly formed, and the entire surface thereof is made of known polyethylene or polypropylene. The contact material 13 has a hollow columnar shape. The gap between the outer circumference of the frame body 12 and the water guiding space 15 is filled with a known contact filler 14 made of polyethylene or polypropylene and having an appropriate shape. Nitrogen, phosphorus and other nutrient salts, sulfides, or organic matter, algae such as water-bloom and sludge such as sludge contained in the water that is introduced into the water can be easily adsorbed and removed, and these can be biologically treated. It can be processed and can be easily cleaned if necessary.

The underwater aeration pump 11 is provided at the upper part of the water guiding gap 15, and the bottom of the water guiding gap 15 is formed in an open shape. Therefore, as shown by the arrow in FIG. The deep water in the vicinity is guided directly from the bottom, and the water around the outer periphery of the frame 12 is guided to the water guiding gap 15 through the filled contact filler 14. In particular, the water gap 15
The deep water near the bottom has a lower water conduction resistance than the water that is guided to the water gap 15 through the filled contact filler 14, so that the deep water can be easily pumped. In addition, the underwater aeration pump 11 sucks oxygen in the atmosphere into the pumping water by the reciprocating special impeller action, mixes the bubbled mixed water with the high-pressure jet again, and jets and drops into the sky like a morning glory. A UCT type underwater aeration pump that performs a ripple action, which is commercially available from Sanko Manufacturing Co., Ltd., was used.

Next, the purifying device 10 comprises at least one
As described above, since three or four floats 26 are preferably attached to prevent the purification device 10 from sinking in the water, it is installed in a state of being floated on the water surface of a lake or marsh. be able to. Further, as described above, the underwater aeration pump 11 squirts and drops into a beautiful morning glory shape while mixing the bubbled air into the pumped water to perform a ripple action. When this is operated on the surface of the lake, it is possible to simultaneously create a fountain by placing a fountain tower on the surface of the lake, thereby improving the water quality and improving the surrounding environment. It has a special effect that it can provide an excellent landscape.

Further, in the purifying apparatus 10, when the deep water is pumped by operating the purifying apparatus 10, the water located around the frame 12 and near the bottom of the water introducing gap 15 is forcibly partially disturbed. As a result, there is an excellent operational effect that it is possible to purify the area around the purifying device in the closed water area in a wide range.

Next, as shown in FIG. 2, the automatic pH monitoring device 20 is provided with a pH meter 22 for automatically measuring the pH of the lake 41 that has been pumped by the sampling pump 21. Alternatively, it can be measured over time. When the pH value of the lake 41 decreases, for example, the alkaline solution is poured into the lake 4.
1 is supplied to supply the required amount of the alkaline solution stored in the alkaline solution storage tank 24 to the lake 41, and the supply pump 23 is supplied when the pH value of the lake 41 reaches approximately neutral. The application of the water to the lake 41 is stopped, so that the pH value of the lake 41 can be kept almost neutral at all times. The alkaline solution is a basic compound such as sodium hydroxide, potassium hydroxide, calcium oxide (quick lime), calcium hydroxide (slaked lime), calcium carbonate (lime carbonate), dolomite, fly ash, sodium aluminate, and zirconium. , Calcium oxide (quick lime) or calcium hydroxide (slaked lime) were suitable.

Further, a stirrer 31 is provided in the vicinity of the supply port of the alkaline solution to be supplied to the lake 41, whereby the alkaline solution is immediately mixed and dispersed with the lake,
It is configured to prevent the alkaline solution from stagnating near the supply port and locally increasing the pH abnormally.

The purifying apparatus used in the automatic purifying apparatus according to the second embodiment is configured such that a water guiding pipe 17 extending below the frame 12 is detachably provided in the water guiding gap 15 of the purifying apparatus 10 described in the first embodiment. However, the anaerobic water in the deeper layer than that of the purification apparatus of Example 1 can be pumped together with the sludge deposited on the surface of the bottom material and treated. Since the length of the water conduit 17 in the longitudinal direction can be appropriately adjusted, or a plurality of water conduits 17 having different lengths can be prepared and an appropriately selected one can be attached to the water conduit 17. It has an excellent effect that the depth can be adjusted and even a deep lake can be processed by utilizing it.

The purifying apparatus utilized in the automatic purifying apparatus according to the third embodiment is provided with a device for adjusting the falling diameter of the submersible aeration pump provided in the purifying apparatus described in the first embodiment or the first embodiment. The falling diameter can be changed freely. Therefore, for example, even if a lake such as an aquaculture pond, an agricultural reservoir, or a regulating pond is small, the automatic purification device can be installed and used. The falling diameter of the submersible aeration pump may be adjusted as long as the voltage applied to the submersible aeration pump can be adjusted, but other known adjusting devices may be used. Further, when a lake such as an aquaculture pond, an agricultural pond, or a regulating pond is large, a plurality of the above-mentioned purifying devices for the closed water area may be arranged at appropriate intervals. Therefore, it is possible to adapt the purifying device of the closed water area to lakes and marshes of all sizes and depths such as aquaculture ponds, agricultural reservoirs, or regulating ponds, thereby improving the water environment and improving the surrounding environment. A landscape can be provided.

As shown in FIG. 3, in the automatic purifying apparatus according to the fourth embodiment, a frame body 32, a water guiding gap 35 defined in the central portion of the frame body 32, and the entire surface of the frame body 32. Has a purifying device having a structure including a knitted contact material 33 installed on the inner surface of the knitted contact material and a contact filler 34 filled inside the knitted contact material 33, and is bubbled into the surface water of the lake. Since the stirrer 31 that moves the mixture to the bottom while mixing the atmosphere is provided at the upper portion of the water guiding gap 35, the nitrogen contained in the water guided from the outer periphery of the frame body 12 to the water guiding void 15 is thereby provided. , Nutrient salts such as phosphorus, sulfide, or organic matter, algae such as water-bloom and sludge such as sludge can be easily adsorbed and removed, and they can be biologically treated. Oxygen is replenished to deep water located at That and / or that as it can be prevented that deterioration in anaerobic conditions is further also be able to easily clean them if necessary.

As a joint, the result of an experiment using the automatic purification apparatus according to the present invention will be described according to Table 1. The lake 41 used for the experiment has a lake area of about 2 square km and a water amount of about 800.
0 tons, an artificial water reservoir with an average water depth of 4.0 meters,
As shown in FIG. 4, five purification devices 10 were installed in the lake 4
1 at almost equal intervals on the water surface, and 2
The sampling pump 21 was fixed near 1 and the automatic pH monitoring device 20 and the power supply unit 42 were fixedly installed on the lakeshore 43.

In the lake 41 used in the experiment, the bottom surface and deep water are in an anaerobic state, and algae such as blue-green algae are deposited as sludge, and the water quality is deteriorated, such as a bad smell of water, and fishes. The induction of mortality has become apparent, and improvement of its water environment has been strongly demanded.

After the automatic purification system for lakes and marshes described in Example 1 was installed, first, only the underwater aeration pump 11 provided in the purification apparatus 10 described in Example 1 was operated to examine the effect of the purification apparatus 10. As shown in Table 1, the sampling pump 2
P before pumping from position 80 cm from the pond surface before cleaning
Although H was 6.0, the pH rose to 6.8 after the submersible aeration pump 11 was continuously operated for 7 days, but the suspended solids and total nitrogen showed abnormally high values.

(The margin below)

[Table 1]

Then, when the operation of the submersible aeration pump was stopped for 7 days, the pH dropped to 6.3 and sludge accumulation on the surface of the sediment was observed. From this, the suspended matter and total nitrogen showed abnormally high values because of the rise of deposited sludge and the like, and the submersible aeration pump 11 efficiently stirred deep water and the surface of sediment. When the water is pumped by operating the purification device 10, the water located around the frame 12 and near the bottom of the water introduction gap 15 can be forcibly stirred. It has been found that the present invention has an excellent effect of being able to purify a wide area around the installed purification device.
The experimental reservoir is a lake in which acidic water flows in or acidic substances elute from the bottom surface, and the bottom surface and deep water are brought into an anaerobic state, and the ecosystem is destroyed. So I thought.

Then, the automatic purification device for lakes and marshes described in Example 1 was installed, and all of the submersible aeration pump 11, the automatic pH monitoring device 20, and the stirrer 25 were operated, and their effects were examined. Calcium hydroxide (slaked lime) was used as the alkaline solution. PH 6.8 after 2 days of continuous operation
The total phosphorus level was improved to 0.02 mg / l, the transparency of the lake water was also improved, and it seems that the effect of calcium hydroxide dropping is still in progress. After 8 days of continuous operation, sulfate ion decreased to 9.1 mg / l, total phosphorus decreased to 0.03 mg / l, and transparency was 100 c.
It was more than m and the dissolved oxygen in the water of the lake was saturated, and the lake could be purified to a water quality satisfying the standards for releasing agricultural water. From these processes, it is considered that the improvement of sediment by calcium hydroxide is still in progress, and it can be seen that the biological treatment environment has been prepared, and the effectiveness and benefits of the automatic lake purification system according to the present invention are shown. I was able to clarify the sex.

[0034]

As described above, the automatic lake / marsh purifying apparatus according to the present invention has a water flow in a deep part which is apt to be anaerobic through a water guiding gap having an open bottom penetrating the center of the frame. It is possible to easily pump deep water and the surface of sediment, and it is possible to purify the surroundings of the installed purification equipment over a wide area, which is an excellent effect. is there. In addition, nutrients such as nitrogen and phosphorus, sulfides, or organic substances contained in the water of the lake or marsh by the mesh-like contact material provided around the outer periphery of the frame and the contact filler filled inside the mesh-like contact material. Prevents deterioration of the water environment by efficiently adsorbing algae such as blue-green algae and sludge such as sludge, and constantly tracking the hydrogen ion concentration in lakes and marshes with an automatic pH monitoring device. In lakes and marshes, this can be improved, and eutrophication of aquaculture ponds, artificial lakes for agricultural reservoirs, various regulating ponds, and lakes into which nutrients flow in with the inflow of domestic wastewater, etc. It can prevent and / or improve and purify the water quality to meet the agricultural water discharge standard, and furthermore, abnormal occurrence of algae such as freshwater red tide and blue-green algae, filtration trouble in water supply facilities, off-flavor of water, etc. Bad water quality ,
It has a special effect that it can also prevent the death of fish and the like.

Further, in the purifying apparatus provided in the automatic purifying apparatus for lakes and marshes according to the first aspect of the present invention, the backward special impeller action sucks oxygen in the atmosphere into the pumping water to form a mixture. Water is mixed with the high-pressure jet again, and a submerged aeration pump that performs wave action by jetting and dropping into the sky is installed and is installed in a state of floating on the water surface by a float, so Oxygen in the water is consumed by respiration, preventing and / or improving the bottom surface and deep water from being anaerobic, and it is beautiful as if a fountain tower was installed above the water surface of the lake. It can be used as a landscape, and it has the special effect of providing a landscape excellent in the surrounding environment.

According to a second aspect of the present invention, in the purification apparatus provided in the automatic purification apparatus for lakes and marshes, the water guiding pipe extending below the frame is detachably provided in the water guiding gap. The anaerobic water in a deeper part than the purifying device described above can be pumped together with sludge deposited on the bottom surface and treated, and the automatic purifying device for lakes according to claim 3 The purifying device provided with the submersible aeration pump equipped with an adjusting device capable of freely changing the falling diameter can be used even if the lake is small. When the lake where the automatic purification device is installed is large, it is possible to prevent and / or improve the deterioration of the water environment by providing a plurality of purification devices according to claim 1 or 2 at appropriate intervals. Furthermore, since the water surface of the lake can be made beautiful, it is possible to provide a landscape excellent in the surrounding environment.

According to the automatic lake purification apparatus of claim 4, since the surface water is equipped with a stirrer that moves in the vertical direction while mixing the bubbled atmosphere with the surface water, the deep water in an anaerobic state can be used. Oxygen can be replenished to improve the aerobic condition, and nitrogen-containing phosphorus such as nitrogen and phosphorus contained in the knitted contact material and the contact filler filled inside the knitted contact material, sulfurization Substances or organic substances, algae such as blue-green algae, and sludge such as sludge can be adsorbed and biologically treated, thereby preventing and / or improving the deterioration of the water environment and further excellent in the surrounding environment. It has an excellent effect of providing a beautiful landscape.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a purification device according to a first embodiment of the present invention.

FIG. 2 is a flow sheet diagram of the pH automatic monitoring device according to the present invention.

FIG. 3 is a sectional view showing an agitator according to a fourth embodiment of the present invention.

FIG. 4 is a view showing an automatic lake purification system according to the present invention installed 1
It is an installation top view of an example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Purification apparatus 11 ... Submersible aeration pump 12 ... Frame 13 ... Stitch-shaped contact material 14 ... Contact filling material 15 ... Water guiding gap 16 ... Float 17 ... Water guiding pipe 20 ... pH automatic monitoring device 21 ... Sampling pump 22 ... pH meter 23 ... Supply pump 24 ... Alkaline solution storage tank 25 ... Stirrer 31 ... Stirrer 32 ... Frame body 33 ... Stranded contact material 34 ... Contact filler 35 ... Water guide gap 36 ... Float 41 ... Lake 42 ... Power supply unit 43 ... Lake shore

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location C02F 1/66 DM 530 G L Q 540 Z 3/22 ZAB C

Claims (4)

[Claims] 1. An automatic purification device for an obstructive water area which mixes bubbled air with pumped water pumped up by a submersible aeration pump and jets and drops it to cause a wave action. A water-conducting void defined in the central portion, a knitted contact material provided over the entire surface of the frame body, a contact filler filled inside the knitted contact material, and a fixed upper portion of the water-conducting void. At least one purification device comprising a submersible aeration pump provided, and at least one float fixed to the frame, a sampling pump for pumping lake water, and a lake pumped by the sampling pump A pH measuring device comprising a pH meter for measuring the pH of water, an alkaline solution storage tank, and a storage in the alkaline solution storing tank based on the pH value measured by the pH measuring device. And a stirrer disposed near the alkaline solution supply device for mixing the alkaline solution supplied from the alkaline solution supply device with the water of the lake and marshes. An automatic purifying apparatus for lakes and marshes, which comprises: an automatic pH monitoring device; and a power supply unit for energizing the submersible aeration pump, the pH measuring device, the alkaline solution supply device, and the stirrer. 2. An automatic purification system for lakes and marshes according to claim 1, wherein a water guide pipe extending below said frame is detachably provided in a water guide space provided in said purification device. 3. The apparatus according to claim 1, wherein said underwater aeration pump includes a device for adjusting a fall diameter. 4. The stirrer comprises a frame body, a water-conducting void defined in the center of the frame body, a stitch-like contact material provided over the entire surface of the frame body, and the stitch-like contact. It is fixedly installed at the upper part of the water guiding space provided in the purifying device configured to include the contact filling material filled inside the material, and is mixed with the bubbled air in the surface water of the lake in the vertical direction. The automatic purifying device for lakes according to any one of claims 1 to 3, which is a stirrer to be moved.