JP2001009489A - Water quality conservation within water basin required to be clean and treatment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively improve the cleaning efficiency of water required to be treated by many kinds of microorganisms living in granular filter media by setting treatment conditions. SOLUTION: The treatment device consists of a pedestal 1 which is disposed on the bottom of a water tank (t), circulation piping 2 for circulating treated water which is disposed between the bottom of the water tank (t) and the pedestal 1, a magnetic means 5 which is disposed in mid-way of the circulation piping 2 and the granular filter media 4 which are placed on the pedestal 1. The pedestal 1 consists of a seat plate 1b which is penetrated with many flow holes through the front and rear and plural leg bodies 1c which are disposed on the rear surface side thereof. The circulation piping 2 consists of water collection piping 2a which is disposed below the pedestal 1 and upright piping 2b which rises from the base part of the water collection piping 2a. Water collection holes 2c are opened at the water collection piping 2a. The end of the upright piping 2b opens right below a water surface (s) and an air introducing pipe is connected to the mid-way thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for preserving and purifying water in a water area requiring purification which is used for preserving and purifying water inside a lake, a river, a waterway, a pond or a water tank. It is about.

[0002]

2. Description of the Related Art Devices for purifying water quality in lakes, rivers, water courses, ponds, aquariums and the like. When filter media are used, for example, when they are granular, These are used by laying them on the bottom, and especially when they are laid thickly, the flow of the water required for treatment inside becomes insufficient and the anaerobic state is apt to occur. Even in the case of a ceramic pipe or a ceramic plate supported by a frame, it is installed on the bottom together with the frame, and the flow of the water for treatment tends to be insufficient. However, the precious filter media did not work effectively,
In many cases, the decomposition of organic substances contained in the water to be treated was not performed well.

[0003]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, and can easily increase the dissolved amount of dissolved oxygen on one side by securing an appropriate flow of the water requiring treatment. On the other hand, on the other side, granular filter media and other filter media are used efficiently, and various aerobic and anaerobic microorganisms are inhabited in them, and most of the organic matter contained in the required water flowing therethrough is decomposed and decomposed. It is an object of the present invention to provide a water quality preservation and purification apparatus in a purification-required water area that can leave only inorganic substances as residues.

[0004]

According to one aspect of the present invention, a pedestal member formed of a member through which water can pass up and down is provided on the bottom of a water area requiring purification, and a water member is provided between the pedestal member and the water bottom. And a forced circulation means for generating a forced circulation of water flowing between the lower part and the upper part of the pedestal member. A water quality preservation and purification apparatus in a purification-required water area, which is provided with magnetic means for applying a magnetic effect to water circulated thereby.

[0005] The purifying waters required include lakes, marshes, rivers, various irrigation canals and other waterways, ponds or water tanks used for various purposes, for preserving the quality of flowing or accumulated water. And all water bodies that require purification.

[0006] As described above, the pedestal member needs to be able to place the particulate filter medium thereon and through which water required for treatment can pass above and below it. In addition, as long as it has such a function, any structure for passing the water to be treated can be freely adopted. For example, a perforated plate, mesh plate, or grid-like plate material having a large number of holes with appropriate diameters opened on average can be adopted.

However, the pedestal member has an appropriate length so that when the pedestal member is disposed at the bottom of the purified water area, an appropriate gap through which the treated water flows can be formed between the pedestal member and the bottom. It is preferred to have a leg body. If a leg is not provided, a plurality of spacer members having an appropriate height are arranged in a well-balanced manner between the pedestal member and the bottom of the purified water area where the pedestal member is to be provided, so that an appropriate gap is generated. Should be so.

[0008] The particulate filter medium is placed on the pedestal member in a layered manner to allow good aerobic, anaerobic and facultative anaerobic fungi to inhabit in the layer. Appropriate ones can be adopted as long as the water requiring treatment can be satisfactorily circulated between them placed in layers.

The forced circulation means circulates the water required for treatment above and below through the pedestal member, and forcibly circulates between the granular filter media arranged in layers thereon, thereby purifying the microorganisms therein. Any kind of thing that can make it proceed can be used.

The magnetic means acts on the water to be treated flowing and moving by the forced circulation means, disperses hydrated ions and associative water molecules, and divides the water molecules from complicated bonds into simple bonds. The configuration does not matter as long as it can be obtained. If the water to be treated is magnetically treated and the association is divided into small pieces, the water to be treated has a space between molecules, so that oxygen and the like are easily dissolved and aerobic microorganisms also propagate. It will be easier. In addition, the SS tends to settle,
Purification of the water requiring treatment can be promoted.

Therefore, according to the water quality preservation and purification apparatus in the purified water area according to the first aspect of the present invention, the forced circulation means is operated, for example, the treated water below the pedestal member is supplied to the surface of the purified water area. When the water is pumped up to the vicinity, the treated water above the pedestal member is forcibly circulated below the pedestal member through the layer of the granular filter medium and the pedestal member.

When the forced circulation means is configured to move the water to be treated upward from below the pedestal member by using, for example, an air lift function, an aeration effect is obtained at the same time, and the water to be treated is required. Can also increase the amount of dissolved oxygen.

In the process of forced circulation by such forced circulation means, the water to be treated is subjected to a magnetic action by the magnetic means, so that the association is divided into small pieces, and a gap between molecules is generated. Therefore, oxygen is easily dissolved in the water requiring treatment, and the aeration effect as described above can be obtained very well. In addition, as described above, when an interval between molecules is generated, aerobic microorganisms also easily proliferate, which is favorable for their inhabitation on the granular filter medium.

When the forced circulation of the water to be treated as described above is performed, the aerobic, anaerobic and facultative anaerobic microorganisms will inhabit the particulate filter medium, so that the granular filter medium flows vertically. In the process, the organic matter contained therein is decomposed by the action of the microorganisms in the process, and the water is purified.

Therefore, if the operation of the forced circulation means is continued, a circulating flow in which the flow of the above-mentioned treated water is repeated is received, and the treated water receives the action of the magnetic means each time, and The action of the microorganisms in the granular filter medium will be received each time. Thus, favorable conditions for purification are prepared by the magnetic means, and under the favorable conditions, decomposition of organic substances contained by microorganisms in the particulate filter medium is favorably performed, and almost complete treatment of the water required for treatment is completed. Purification will be promoted.

In other words, according to the water quality preservation and purification apparatus in the purified water area according to the first aspect of the present invention, the granular filter medium is disposed at a position slightly higher than the bottom in the purified water area by the pedestal member, and the space between the upper and lower parts is separated. While allowing to be circulated, it was intended to exert a magnetic effect on the water that needs to be circulated between them, so that, as described above, the water that needs to be treated was processed under favorable conditions for purification. This makes it possible to reliably circulate through the granular filter medium, and therefore, water is efficiently purified as described above.

According to a second aspect of the present invention, in the water quality preserving and purifying apparatus in the purifying water area according to the first aspect of the present invention, the pedestal member is provided with a plate-like member having a large number of holes opened on an average and a lower surface thereof. And a plurality of legs.

Therefore, according to the water quality preservation and purification apparatus in the purified water area according to the second aspect of the present invention, by simply installing the apparatus at the bottom of the purified water area, an appropriate gap through which the treated water can flow can be provided below. The treatment water can be circulated through a large number of holes between the upper and lower portions. Therefore, when the granular filter medium is placed in a layered manner on top of this, the water for treatment is circulated through the filter medium, and the decomposition of the organic substances contained therein can be promoted satisfactorily.

According to a third aspect of the present invention, in the water quality preserving and purifying apparatus in the purifying water area according to the first or second aspect of the present invention, the granular filter medium is constituted by a porous granular member, and the porous filter member is provided on the pedestal member. It is laid in layers.

Therefore, according to the apparatus for preserving and purifying water in the purifying water area of the third aspect of the present invention, aerobic, anaerobic and facultative anaerobic fungi can be favorably inhabited in the granular filter medium. Thereby, the purification of the treated water in the purified water area, that is, the action of decomposing the organic matter can be favorably performed.

A fourth aspect of the present invention is the water quality preserving and purifying apparatus in the purifying water area according to the first, second, or third aspect of the present invention, wherein the forced circulation means is provided for collecting the required water from below the pedestal member. A water collection pipe arranged there, an upright pipe having a lower end connected to the water collection pipe and an upper end opened directly below the water surface,
It is constituted by an air introduction pipe connected to the upright pipe and introducing air into the pipe so as to raise water required for treatment, and a compressed air generating means for sending air to the air introduction pipe.

Therefore, according to the water quality preserving and purifying apparatus in the purifying water area according to the fourth aspect of the present invention, it is possible to pump the water required under the pedestal member near the water surface of this water area with a simple configuration. Through the above process, it is possible to generate a flow of water circulating between the upper part and the lower part through the granular filter medium layer placed on the base member on the way. In addition, since the required water is raised by utilizing the air lift effect, the aeration effect can be obtained at the same time by operating the forced circulation means.

According to a fifth aspect of the present invention, there is provided the water quality preservation and purification apparatus in the purified water area according to the fourth aspect of the present invention, wherein the magnetic means comprises a pair of at least two poles having opposite poles facing each other with the upright pipe interposed therebetween. Of the permanent magnet.

Therefore, according to the water quality preserving and purifying apparatus in the purifying water area according to the fifth aspect of the present invention, the water to be treated is efficiently acted on in the process of passing through the upright pipe, and the hydrated ions and the associated The water molecules disperse, breaking the water molecules from complex bonds to simple bonds. As a result, as described above, since an interval between molecules occurs in the water to be treated, oxygen and the like are easily dissolved, and aerobic microorganisms are also easily propagated. In addition, the SS tends to settle, and the purification of the water requiring treatment can be further promoted.

According to a sixth aspect of the present invention, in the water quality preservation and purification apparatus in the purifying water area according to 1 of the present invention,
It is a pool-like water area constructed by embedding a water tank with a large number of infiltration holes on the peripheral side so that the upper part is open on the ground surface, and an introduction pipe for introducing the required water to the pool-like water area In addition, the granular filter medium is arranged near the water surface along the inner peripheral side of the pool-like water area.

Therefore, according to the water quality preserving and purifying apparatus in the purified water area of the sixth aspect of the present invention, domestic wastewater and other treated water are guided into the pooled water area, which is the purified water area, by the introduction pipe. Then, after purifying in the same manner as in the first aspect of the present invention, the purified water can permeate into the surrounding soil.

According to a seventh aspect of the present invention, there is provided a pedestal member formed of a member through which water to be treated can pass up and down in a water channel which is a purified water area, and a pedestal member between the water member and the water bottom. A filter medium having a plurality of ceramic pipes held by a frame is installed at regular intervals along the flow direction on the pedestal member, and a granular filter medium is arranged therebetween. In addition, the forced circulation means for generating forced circulation of the water required for treatment flowing between the lower part and the upper part of the pedestal member, and a water collecting pipe arranged below the pedestal member, and collected by the collecting pipe A return pipe for returning the treated water upstream and above the pedestal member, and a forced circulation means constituted by a pump means inserted for performing the return operation in the middle of the return pipe, are disposed. In the middle of water collection pipe or return pipe Aeration means for forming magnetic means for applying a magnetic effect to the water requiring treatment flowing therethrough, and further supplying air into the water requiring treatment through the vicinity of a filter medium holding a plurality of ceramic pipes in the frame from below the pedestal member. It is a water quality preservation and purification device in a purification-required water area where means are arranged.

The water channel, which is the water area requiring purification, includes a river, an irrigation canal, or a wastewater treatment facility configured in a water channel shape. In any case, the present invention is particularly applicable to a case where the water flowing in a grooved water area having a flow is contaminated with an organic substance or the like and needs to be purified.

The pedestal member may be different in dimensions and the like, but is basically the same as that of the first aspect of the present invention. The particulate filter medium and magnetic means are also the same as those of the first aspect of the present invention.

As the filter medium in which a plurality of ceramic pipes are held by the frame, it is preferable to adopt a porous ceramic pipe to which microorganisms easily adhere. The diameter does not matter. The configuration of the frame is also free, and the mounting direction of the ceramic pipe is also free in either the vertical direction or the horizontal direction.

[0031] The forced circulation means collects the water required for treatment below the pedestal member and moves it to the upstream side thereof, whereby the granular filter medium disposed in a layered manner from above the pedestal member and above it. Also, a downward movement of the required water moving downward through the filter medium holding a plurality of ceramic pipes in the frame body is caused, and thus a circulating movement of the required water moving up and down the base member is generated. As long as the purification by the microorganisms in both filter media can be advanced, the details of the configuration may be any. In addition, such forced circulation of treated water is caused by:
In addition, the present invention is also expected to have a favorable effect of increasing the amount of dissolved oxygen in the water requiring treatment. Further, the forced circulation means is not intended to cause the above-mentioned circulating movement of all the water required for treatment in the waterway, but may perform such operation at an appropriate ratio.

The aeration means may be the same as that generally used conventionally. It is preferable that the air is diffused, for example, by connecting two filter media holding a plurality of ceramic pipes to the frame, and ejecting the filter upward from between them.

Therefore, according to the apparatus for preserving and purifying water in the purified water area according to the seventh aspect of the present invention, a part of the treated water flowing from the upstream to the downstream in the water channel is partially forced by the forced circulation means to the pedestal. Circulation that is collected from below the member, moved upward in the upstream, and moves downward while moving downstream through a filter medium in which a plurality of ceramic pipes are held in the layer of the granular filter medium or the frame. A stream is generated, and in this process, it comes into contact with microorganisms inhabiting both filter media, and the organic substances contained therein are decomposed.

Further, in the process of forced circulation by such forced circulation means, the water to be treated is subjected to a magnetic action by the magnetic means, so that the association is divided into small pieces, and a gap between molecules is generated. Therefore, as described above, oxygen is easily dissolved in the water to be treated, and the effect of the aeration means can be obtained extremely well. In addition, as described above, when an interval between molecules is generated, aerobic microorganisms also easily proliferate, which is favorable for their inhabitation on the granular filter medium.

Therefore, if the operation of the forced circulation means and the operation of the aeration means are continued, a part of the water required to flow from upstream to downstream becomes the circulating flow, and the water required for the magnetic means Each time,
In addition, it receives the action of the microorganisms in the two filter media each time and receives the supply of air by the aeration means. Thus, favorable conditions for purification are prepared by the magnetic means and the aeration means, and under the favorable conditions, microorganisms in the two filter media can favorably decompose organic substances contained in the treated water. , Almost complete purification.

The water quality preserving and purifying apparatus in the purifying water area according to the present invention described above generally requires only one device when the narrow water area such as in a water tank is targeted as the purifying water area. However, when a wide area such as a lake, a river, or a water channel is targeted, it is preferable to use a plurality of such areas at appropriate intervals according to the conditions of the area.

[0037]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail based on embodiments with reference to the drawings. Figure 1
FIG. 6 shows a device for preserving and purifying water in a water purifying area of Example 1 to which the present invention is applied. FIG. 1 is a side view of the device, and FIG. FIG. 3 is a partially cutaway plan view showing circulating and backwashing pipes for the water required for treatment, FIG. 3 is a side view of magnetic means used in the apparatus, and FIG. 4 is a cross-sectional view of magnetic means used in the apparatus. ,
FIG. 5 is an explanatory side sectional view of a backwash pipe used in the apparatus, and FIG. 6 is an enlarged front sectional view of the backwash pipe used in the apparatus.

FIGS. 7 and 8 show a second embodiment of the present invention.
5 shows a device for preserving and purifying water in the water area requiring purification, FIG. 5 is a side view of the device, and FIG. 6 is a schematic diagram showing a side wall of a water tank used in the device. 9 to 11
FIG. 9 shows a water quality preserving and purifying apparatus in a purifying water area according to a third embodiment to which the present invention is applied, and FIG.
FIG. 10 is a schematic explanatory view showing a circulation pipe used in the apparatus, and FIG. 11 is a schematic enlarged perspective view showing a ceramic pipe held by a frame supporting filter medium used in the apparatus.

<Embodiment 1> In this embodiment, the present invention is applied to an aquarium fish tank. As shown in FIG. 1, this embodiment has a pedestal (pedestal member) disposed on the bottom of a water tank t.
1, a circulating pipe 2 for circulating treated water disposed through the gap between the bottom of the water tank t and the pedestal 1 and above and below the pedestal 1, a backwash pipe 3 for backwashing disposed at the same position, .. And the magnetic means 5 disposed in the circulating pipe 2 as basic elements.

As shown in FIGS. 1 and 2, the pedestal 1 is made of a vinyl chloride seat plate (plate-like member) 1b having a large number of flow holes (holes) 1a, 1a,. And a plurality of legs 1c, 1c,.
The seat plate 1b is installed with a gap between the legs 1c, 1c,... And the bottom of the water tank t. In addition, the said circulation hole 1
The openings a, 1a,... have such a diameter that the granular filter medium 4 placed on the seat plate 1b does not fall therefrom, that is, a diameter slightly smaller than the diameter of the granular filter medium 4. The seat plate 1
A pipe through hole is opened at one end side (right side in the figure) of b, through which upright pipes 2b and 3b to be described later penetrate and stand up, through the circulation pipe 2 and the backwash pipe 3.

The circulation pipe 2 constitutes a part of the forced circulation means. As shown in FIGS. 1 and 2, two circulation pipes 2 are arranged below the seat plate 1b of the pedestal 1 installed in the water tank t. And a vertical pipe 2b that rises from the center of the base of one end (right side in the figure) of the water collection pipe 2a. The water collection pipe 2a has a large number of peripheral pipes. The water collecting holes 2c, 2c ... are opened on average. The height of the upright pipe 2b is determined so that the upper end thereof is located immediately below the water surface s, and the air introduction pipe 2d is connected midway in the height direction. A compressor (not shown) (compressed air generating means) is connected to the air introduction pipe 2d.

As shown in FIG. 1, the magnetic means 5 is provided on the upright pipe 2b at an upper portion thereof and the air introduction pipe 2b.
It is arranged in two places, just below the connection with d. Further, as shown in FIGS. 3 and 4, the magnetic means 5 includes the upright pipe 2.
a pair of permanent magnets 5 with opposite poles facing each other with b
a, 5a, and a case 5b that covers them. The case 5b also forms a magnetic path. The magnetic flux density of the permanent magnets 5a, 5a is 1200
0 Gauss. The magnetic flux density is not limited to this,
It is appropriate to employ one having about 0 to 13000 gauss.

As shown in FIGS. 1 and 2, the backwash pipe 3 branches into two pipes disposed below the seat plate 1b and slightly shifted vertically and horizontally from the water collection pipe 2a. And an upright pipe 3b that rises from the center of the base on one end side (right side in the figure) of the above-mentioned ejection pipe 3a. As shown in FIGS. 5 and 6, the ejection pipe 3a has a double structure having an inner pipe 3d inside thereof, and the ejection pipe 3a and the inner pipe 3d are respectively provided on the peripheral side thereof. The outlets 3c, 3c,. The upright pipe 3b is, as shown in FIG.
The upper end is drawn out of the water tank t, and is connected to a pump device for supplying fresh water for back washing as required.

As the particulate filter medium 4, a porous material obtained by firing a mixture of humus, incineration ash and sludge was used. It has a specific gravity of about 1.05 to 1.55. Of course, other ceramic particles may be used. The granular filter media 4, 4,... Were placed on the seat plate 1b of the pedestal 1 in a layer with a thickness of about 3 cm.

Therefore, according to the water quality preserving and purifying apparatus of this embodiment, since the quality of the water in the water tank t can be maintained in a good state, the health state of the ornamental fish and the like kept therein can be maintained in a good state. can do. In addition, since the transparency of the water can be naturally maintained, it is convenient for appreciation.

In this embodiment, in the circulation pipe 2, air is always introduced from an air introduction pipe 2d connected in the middle of the upright pipe 2b. The pipe 2b is foamed and rises. Along with this, the water around the foamed air also rises, and eventually the water is discharged from the upper end of the upright pipe 2b and flows out near the water surface s of the water tank t. Then, in the water collecting pipe 2a connected to the lower end of the upright pipe 2b, water is sucked from the water collecting holes 2c, 2c,..., And accordingly, the water above the seat plate 1b of the pedestal 1 becomes granular. It is sucked below the seat plate 1b through the filter media 4, 4,....

In this way, the water below the seat plate 1b is moved upward through the circulation pipe 2 to near the water surface s, and the water above the seat plate 1b is sucked downward therefrom. 1b moves upward through the circulation pipe 2, and the upper water moves downward through the granular filter media 4, 4,... And the seat plate 1b, thereby causing a circulating movement. Further, since this circulation movement is performed by the introduction of air from the air introduction pipe 2d, the aeration operation is performed at the same time.

The water in the water tank t is subjected to the action of the magnetic means 5 at two points in the middle of such a circulating movement, ie, in the middle of the upright pipe 2b, so that hydrated ions and associative water molecules are dispersed. Then, a complicated connection is divided into a simple connection. In the water subjected to such an action, an interval between molecules occurs, so that oxygen and the like in the air introduced by the air introduction pipe 2d are more easily dissolved as described above, and aerobic microorganisms also propagate. Easier to do. Further, the condition that the SS easily settles and the water purification is easily promoted is established. In addition, the circulation movement of water as described above has an action of increasing the amount of dissolved oxygen alone.

On the other hand, as described above, the granular filter media 4, 4,...
4 mainly adhere to the aerobic microorganisms, and the anaerobic or facultative anaerobic microorganisms mainly inhabit the granular filter media 4 in the inner layer. The water that has passed through these particulate filter media 4, 4,... Due to the circulating movement is decomposed and purified by the microorganisms when the organic substances contained therein come into contact with them. Become. The decomposition action by the microorganism is effected by the magnetic means 5 and is performed very well because suitable conditions are set.

Therefore, when breeding tropical fish and other ornamental fishes in this aquarium t, for example, their environment can be maintained well, and the health status of these ornamental fishes can be maintained well.

When clogging occurs due to accumulation of bait or powder left over by the ornamental fish on the layer of the particulate filter media 4, 4,..., The air passing through the air introduction pipe 2d in the circulation pipe 2 The introduction is temporarily stopped, and the backwashing by the backwashing pipe 3 is performed. That is, the pump device is operated, and the supplied fresh water is introduced below the seat plate 1b through the upright pipe 3b and the ejection pipe 3a, and is ejected from the ejection holes 3c, 3c,... Provided in the ejection pipe 3a. Then, the granular filter media 4, 4,... Mounted on the seat plate 1b are backwashed. In this way, the rest of the bait for the ornamental fish, feces, and the like that have accumulated on the clogging and clogged are removed. At this time, the ejection pipe 3
a is provided with an inner pipe 3d, which also has ejection holes 3c, 3c ...
And through which water is supplied, so that the pressure in all the ejection holes 3c, 3c,... Of the ejection pipe 3a becomes constant, and the remaining in the entire area of the layer of the granular filter media 4, 4,. It can be backwashed without any problems.

Thereafter, the operation described above is restarted and continued.

<Measurement Results> As the water tank t of the above-mentioned Example 1, a water tank having a length of 30 cm, a width of 60 cm and a height of 40 cm was adopted.
Tap water was placed therein, and changes in water quality (BOD, TN, TP, Do) were examined while breeding 5 goldfish therein.
Further, as Comparative Example 1, the same granular filter medium as in Example 1 was spread over the bottom of a water tank having the same size and capacity as in Example 1, tap water was poured, and the same capacity as the compressor used in Example 1 was used. Five aquariums were bred during aeration, and changes in water quality (BOD, TN, TP, Do) were examined. Table 1 shows the results of the above.

[0054]

[Table 1]

In Table 1, Actual 1 indicates Example 1 and Ratio 1 indicates Comparative Example 1. The data on the first day is data immediately after tap water is supplied, and the other data is data on the subsequent display days.

As can be understood from the measurement results shown in Table 1 above, according to Example 1, the water quality does not decrease even with the passage of time, and the water quality tends to be slightly better. For example, BOD hardly changes after 30 days, but TN and TP are slightly reduced,
DO is found to be rising. In the case of using the conventional general technique shown in Comparative Example 1, BOD increased more than 7-fold after 30 days, and TN and TP slightly increased, while DO decreased less than half. It is recognized that it has decreased. Comparing the two, it can be seen that Example 1 obtained extremely excellent results as compared to Comparative Example 1 using a conventional general technique.

Although not shown in Table 1, when the potential of water in the water tank t of Example 1 was measured, it was -10 mV to -30 mV.
It has become. Example 1 used for the above measurement was continuously carried out as it was, and seven months have passed. However, no occurrence of blue water has been observed. It maintains high transparency as seen by eyes. This seems to be related to the fact that the potential in the water tank t is as described above.

<Embodiment 2> In this embodiment, the present invention is applied to a treatment tank for domestic wastewater. As shown in FIG.
In this embodiment, a treatment tank (water tank) T is formed by digging down an appropriate area close to the source of drainage. This treatment tank T is constructed by a general technique using concrete or the like, and a large number of infiltration holes h, h. Shall be. The penetration holes h, h... Do not need to be opened at the top and bottom.

In the processing tank T, a pedestal 11 is installed on the bottom as a basic component, and a gap between the pedestal 11 and the bottom of the processing tank T and a position penetrating the top and bottom thereof are provided. A circulating pipe 12 for circulating drain water is disposed in the pedestal 1, and a backwash pipe 13 for backwashing is disposed in a similar position.
, And a magnetic means 15 is installed in a part of the circulation pipe 12, and above the treatment tank T, wastewater required for treatment is discharged from its upper opening. A drainage introduction pipe 16 to be introduced is provided.

As with the pedestal 1 of the first embodiment, the pedestal 11 is made of a vinyl chloride seat plate 11b having a large number of flow holes penetrating from front to back, and a plurality of legs 11c, 11
c, and the legs 11c, 11c
The seat plate 11b is provided with a gap between the base plate and the bottom of the processing tank T. In addition, the said flow hole is the said seat plate 11
In order to prevent the particulate filter medium 14 placed on the b from dropping therefrom, it is configured to have an inner diameter smaller than its outer diameter. A pipe through hole is opened at one end (right side in FIG. 7) of the seat plate 11b, through which the upright pipes 12b and 13b to be described later penetrate and stand up. ing.

As shown in FIG. 7, the circulation pipe 12
The water collecting pipe 12a is disposed below the seat plate 11b of the pedestal 11 disposed in the processing tank T, and an upright pipe 12b rising from one end of the water collecting pipe 12a (on the right side in the figure). The water collecting pipe 12a has a large number of water collecting holes 12c, 12c,. The height of the upright pipe 12b is determined so that the upper end thereof is located immediately below the water surface s, and the air introduction pipe 12d is connected in the middle of the height direction. A compressor (not shown) (compressed air generating means) is connected to the air introduction pipe 12d.

The magnetic means 15, as shown in FIG.
It is arranged in the middle of the upper part of the upright pipe 12b. The magnetic means 15 is provided in the upright pipe 1 in exactly the same manner as in the first embodiment.
A pair of permanent magnets having opposite poles facing each other with 2b interposed therebetween, and a case enclosing them.
The case also forms a magnetic path. Here, a permanent magnet having a magnetic flux density of 12000 gauss was used.

The backwash pipe 13 is, as shown in FIG.
A jet pipe 13a disposed below the seat plate 11b and slightly displaced in the vertical and horizontal directions from the water collecting pipe 12a.
And an upright pipe 13b that rises from a base on one end side (right side in the figure) of the ejection pipe 13a.
The ejection pipe 13a has a double structure including an inner pipe therein, just like the ejection pipe 3a of the first embodiment, and the ejection pipe 13a and the inner pipe each have a peripheral side portion. The ejection holes 13c are opened on average.
As shown in FIG. 7, the upright pipe 13b has an upper end drawn out of the water tank T and connected to a pump device for supplying backwashing fresh water as needed.

As the particulate filter medium 14, a porous material obtained by firing a mixture of humus, incinerated ash, and sludge was employed in exactly the same manner as in Example 1. Such a granular filter medium 14,
Except for 14 near the side wall W, the seat plate 1 of the pedestal 11
It is supposed to be placed on the side of the side wall W in a layer shape with a thickness of about 3 cm on the base 1b, and to be stacked so as to cover the side wall W to a position higher than the water surface s. Stacked granular members 1
4, 14 ... are covered with the net material 17 to prevent them from collapsing.

Therefore, according to the water quality preserving and purifying apparatus of this embodiment, after purifying domestic wastewater containing organic matter introduced into the treatment tank T from the target household, the permeation hole opened on the side wall W thereof. It can be discharged and permeated into the surrounding soil through h, h.

In this embodiment, in the circulation pipe 12, an air introduction pipe 12d connected in the middle of an upright pipe 12b is used.
, Air is always introduced from above, and the air introduced from here is foamed and rises in the upright pipe 12b. With the rise of the foamed air, the surrounding wastewater required for processing also rises, and eventually the wastewater required for discharge is discharged from the upper end of the upright pipe 12b and flows out near the water surface s of the processing tank T. . Then, in the water collecting pipe 12a connected to the lower end of the upright pipe 12b, the water collecting holes 12c, 12c... Cause suction of the wastewater to be treated, and accordingly, the water collecting pipe 12a located above the seat plate 11b of the base 11 is formed. The treated wastewater is sucked below the seat plate 11b through the granular filter media 14, 14,.

In this manner, the wastewater required for treatment located below the seat plate 11b is moved up to near the water surface s through the circulation pipe 12, and the wastewater required for treatment located above the seat plate 11b is sucked downward. Therefore, as a whole, the treated wastewater below the seat plate 11b moves upward through the circulation pipe 12, and the treated wastewater above is removed from the granular filter medium 14,
.. And the seat plate 11b to move downward. This cyclic movement also
Since this is performed by introducing air from the air introduction pipe 12d, the aeration function is also performed at the same time.

The effluent requiring treatment (house effluent) introduced into the treatment tank T is subjected to the action of the magnetic means 15 in the course of such a circulation movement, that is, in the middle of the upright pipe 12b. The ions and associative water molecules are dispersed, and the complex bond is broken into simple bonds. Since an interval between molecules is generated in the treated wastewater that has been affected in this manner, oxygen and the like in the air introduced through the air introduction pipe 12d as described above are more easily dissolved, and the aerobic microorganisms are removed. Will also be easy to breed. Further, the condition that the SS easily settles and the purification of the wastewater requiring treatment is easily promoted is established.

On the other hand, the granular filter media 14, 14,... Are porous fired materials as described above, and the granular filter media 14, 14,
The aerobic microorganisms mainly adhere to 14..., And the anaerobic or facultative anaerobic microorganisms mainly inhabit the granular filter media 14 in the inner layer. The wastewater requiring treatment that has passed through these particulate filter media 14, 14... Due to the circulation movement is decomposed and purified by the microorganisms when the organic substances contained therein come into contact with them. It will be. This microbial decomposition action is performed by the magnetic means 15 and suitable conditions are set, so that it can be performed more favorably.

Of the wastewater required for purification that has been purified in the treatment tank T, the wastewater that moves in the direction of the side wall W is the granular filter medium 14, 14 disposed along the side wall W.
.., Furthermore, as described above, the microorganisms inhabit there and pass through while undergoing the purifying action, and are discharged into the soil through the permeation holes h, h.

When the layers of the granular filter media 14, 14... Are clogged, the introduction of air through the air introduction pipe 12d is stopped, and then the backwashing is performed by the backwashing pipe 13. The pump device is operated, and the supplied fresh water is introduced below the seat plate 11b through the upright pipe 13b and the jet pipe 13a.
. are provided, and backwashing of the particulate filter media 14, 14... mounted on the seat plate 11b is performed. Thus, clogging is eliminated.

At this time, an inner pipe is provided inside the jetting pipe 13a, and the jetting hole is opened in the jetting pipe 13a, and fresh water is supplied through the jetting pipe.
The pressure in all the ejection holes 13c of 13a becomes constant, and the backwash can be performed well in the entire area of the layer of the granular filter media 14, 14 ....

Thereafter, the operation described above is resumed and continued.

<Measurement Results> The treatment tank T of Example 2 having a capacity of 2 m ³ was adopted,
, Domestic wastewater was introduced at a rate of 1 m ³ / day, and the quality of the introduced wastewater and the quality of the treated water discharged and permeated through the permeation holes h, h. The treated water is supplied to the side wall W of the treatment tank T.
Digging down the outside part of, the penetration hole h at the digging position
Samples flowing out of h ... were sampled. Table 2 shows the measurement results.

[0075]

[Table 2]

As can be understood from the measurement results shown in Table 2 above, according to Example 2, the pollutant components in the introduced wastewater were sufficiently removed, and the dissolved oxygen was increased. . The quality of the treated water discharged and infiltrated into the ground sufficiently meets the discharge standards.

<Embodiment 3> In this embodiment, the present invention is applied to a continuous water treatment apparatus for pond water in a park. After the water is purified through the treatment device, the treated water is returned to the pond. As shown in FIG.
In the middle of the channel R, as a basic component, a pedestal 21 is first arranged on the bottom thereof, and the pedestal 21 and the channel R are mainly arranged.
A circulation pipe 22 for circulating treated water is disposed in a gap between the bottom and the bottom of the water passage R, and two backwash pipes 23, 23 and three for backwash from the vicinity of the bottom of the water channel R toward the lower side of the pedestal 21. Aeration pipes 28, 28, 28 are arranged, and in addition to the above-mentioned pedestal 21, frame supporting filter materials 29 in which a plurality of ceramic pipes are held in a frame body are installed at regular intervals at three places, one pair at a time. .. Are placed on the pedestal 21 in the meantime, and a magnetic means 25 is installed in a part of the circulation pipe 22, and further on the upstream side of the position where the pedestal 21 is installed. Has a orbiting screen 26 for removing coarse solid components, and a basket-like container 27 for receiving the coarse solid components removed by the orbiting screen 26 just below the upper end thereof.

An air supply pipe 30 for sending air to the backwash pipes 23, 23 and the aeration pipes 28, 28, 28 is drawn in FIG. 9 as if it were buried below the water channel R. However, this is convenient for drawing, and the air supply pipe 30 is disposed along the bottom, and the backwash pipes 23, 23 and the aeration pipes 28, 28, 28 are connected to the air supply pipes. It is the one that rises from the pipe 30 for use.

Similar to the pedestals 1 and 11 of the first and second embodiments, the pedestal 21 is made of a vinyl chloride seat plate 21b having a large number of flow holes penetrating from front to back, and a plurality of legs disposed on the back side thereof. 21c, 21c, ..., and the seat plate 21b is arranged with a gap between the leg 21c, 21c, ... and the bottom of the water channel R. The diameter of the flow hole is the same as that of the first and second embodiments.

The circulation pipe 22 is, as shown in FIG.
A water collection pipe 22a disposed below the seat plate 21b of the pedestal 21 from upstream (left side) to downstream (right side), and is turned back when it comes out of the seat plate 21b at the most downstream portion, and is disposed along the upstream from the downstream. And a return pipe 22b which is set up at the most upstream part. As shown in FIG. 10, the water collecting pipe 22a has a large number of water collecting holes 22 on its peripheral side.
are open on average. The height of the return pipe 22b is determined so that the upper end of the rising part at the most upstream part is located immediately below the water surface s. It is assumed that the rising portion is located immediately upstream of the most upstream one of the pair of frame supporting filter materials 29, 29,....

As shown in FIGS. 9 and 10, a pump device 22d and the magnetic means 25 are installed in the circulation pipe 22 in the vicinity of the folded portion between the water collection pipe 22a and the return pipe 22b. The magnetic means 25 is also provided in the middle of the rising section.

The pump device 22d is connected to the collecting pipe 2
2a to pump up the wastewater required for treatment located below the seat plate 21b, and to perform a pumping action to return it to the upper portion immediately upstream of the frame support filter materials 29, 29 located at the most upstream portion through the return pipe 22b. belongs to.

The magnetic means 25 is provided in the water collection pipe 2 of the circulation pipe 22 as described above and shown in FIGS.
In the vicinity of the folded portion between the return pipe 2a and the return pipe 22b, more specifically, at the downstream end of the water collection pipe 22a, one is provided in front of the pump device 22d, and the other is provided on the return pipe 22b. It is exteriorly installed in the middle of the upper part of the start-up part which started up at the upstream end of. The configuration of the magnetic means 25 is exactly the same as that of the first and second embodiments. Briefly, it is composed of a pair of permanent magnets having opposite poles facing each other with a rising portion of the water collection pipe 22a or the return pipe 22b interposed therebetween, and a case for exteriorizing these. Also forms a magnetic path.

The backwash pipes 23, 23 and the aeration pipes 28, 28, 28 are respectively branched from the air supply pipe 30 arranged along the bottom of the water channel R, and the aeration pipes 28, 28, 28 Are configured to branch and extend to a lower portion of each of the pair of frame supporting filter media 29, 29, and the backwash pipes 23, 23 are branched and extend to a lower portion of a portion where the granular filter media 24, 24,. Configuration.

The aeration pipes 28, 28, 28
The upper end of each of the pair of frame supporting filter media 2
It opens toward the gap between 9 and 29, and is positioned so as to diffuse here. These aeration pipes 2
Each of 8, 28 and 28 is directly connected to the air supply pipe 30. When air is being sent to the air supply pipe 30, the aeration pipe 28,
From 8 and 28, air diffusion is always performed.

The backwash pipes 23, 23 are positioned as described above, and an electromagnetic valve 23a is inserted in the middle of a pipe extending from the air supply pipe 30. Further, a T-shaped nozzle pipe 23b is connected to the uppermost portion thereof, and air for backwashing can be jetted from several nozzles opened to the nozzle pipe 23b.

The end of the air supply pipe 30 is connected to a compressor that generates compressed air.

As the particulate filter medium 24, the same porous fired material as that of Examples 1 and 2 was employed. The granular filter media 24, 24...
Except for the part where 9 is installed, the seat plate 21 of the pedestal 21
It is placed in a layer of about 3 cm thick on b.

The frame-supporting filter medium 29 is formed by arranging several ceramic pipes 31 vertically or horizontally with a slight gap therebetween and supporting them with a frame. This ceramic pipe 3
As shown in FIG. 11, reference numeral 1 denotes a member having a hollow cross section and a star-shaped cross section, which is porous.

The orbiting screen 26 employs a screen generally used in the related art.

Therefore, according to the water quality preserving and purifying apparatus of this embodiment, the water containing organic matter guided from the pond in the water channel R can be purified and returned to the pond. Needless to say, the return can be easily performed using a pump device or the like outside the device.

In the apparatus of this embodiment, the water required for treatment (pond water) guided from the pond of the target park to the waterway R is supplied to the waterway R.
, And solid components therein, for example, leaf fall, are removed by the orbiting screen 26 and transferred to the upper basket 27. The water requiring treatment that has passed therethrough moves gradually above and below the seat 21b of the pedestal 21 in the downstream direction.

At this time, in the circulation pipe 22, a pump device 22d disposed at the turn-back portion at the most downstream portion is always performing a pumping operation, and is disposed below the seat plate 21b from upstream to downstream. The required water flowing therethrough is collected and suctioned through the water collecting holes 22c, 22c,... Of the water collecting pipe 22a, sent to the return pipe 22b via the pump device 22d, and further returned to the upstream part. The liquid is discharged from the upper end of the rising section.

The discharge position is, as described above, the upper part immediately upstream of the frame supporting filter materials 29, 29 arranged at the most upstream part, and the water required to be discharged discharged in this manner rides on a gentle flow. .. And the particulate filter media 24, 2
4. On the other hand, as described above, the water collecting operation is performed by the water collecting pipe 22a below the seat plate 21b, as described above, so that the seat plate 21b Most of the water required for treatment flowing above the
24... Are sucked and lowered below the seat plate 21b.

Thus, the water to be treated below the seat plate 21b moves to the upstream side through the circulation pipe 22 and is moved up to the vicinity of the water surface s. As it flows down, it is sucked down below the seat plate 21b. Therefore, the water to be treated as a whole is collected while flowing from the upstream to the downstream and is moved upward from the lower side of the seat plate 21b to the upstream side. The circulation movement of moving below 21b is repeated.

At the same time, air is diffused from the upper ends of the aeration pipes 28, 28, 28 toward the gaps between the pair of frame supporting filter media 29, 29, and an aeration operation is performed.

The above-mentioned treated water is supplied to the magnetic means 25, 25 in the middle of such a circulation movement, that is, in the vicinity of the turn-back portion on the downstream side of the water collecting pipe 22a and in the upper part of the rising portion of the return pipe 22b. Due to the action, as described in Examples 1 and 2, hydrated ions and associative water molecules are dispersed, and complex bonds are broken into simple bonds. Since the water to be treated which has been affected in this way has a space between molecules, the aeration pipe 2 is formed as described above.
Oxygen and the like in the air introduced by 8, 28 and 28 are more easily dissolved, and aerobic microorganisms are also more likely to propagate. Further, the condition that the SS is likely to settle and the purification of the water to be treated is easily promoted is established.

On the other hand, each of the granular filter media 24, 24,... Is a porous fired material,
The aerobic microorganisms mainly adhere to 4, 4,..., And the anaerobic or facultative anaerobic microorganisms mainly inhabit the granular filter media 24, 24,. Then, due to the circulation movement, these granular filter media 24, 2 and
4. The treated water that has passed through the inside is decomposed and purified by the microorganisms when the organic substances contained therein come into contact with them. The decomposing action by the microorganism is effected by the magnetic means 25 and is performed very favorably because suitable conditions are set.

[0099] The treated water thus purified by the device in the water channel R is pumped up from a downstream portion by a pump device outside the device, and returned to the target pond.

When the layers of the particulate filter media 24, 24... Are clogged, the operation of the pump device 22d is stopped, and the electromagnetic valves 23a, 23a, 23a are stopped.
Is opened, air is supplied to the backwash pipes 23, 23, and air is ejected from the nozzles of the nozzle pipes 23b, 23b to perform the backwash operation. Thus, the granular filter medium 2
The clogging of 4, 24 ... is eliminated. Thereafter, the operation described above is resumed and continued.

<Measurement Results> Water from the park pond was introduced into the waterway R of the third embodiment from the upstream side at a rate of 1 m ³ / day, and the water quality of the introduced pond and the downstream side of the continuous treatment apparatus were measured. Leaked,
The quality of the treated water returned to the pond was measured. Table 3 shows the measurement results. The capacity of the water channel R in the portion where the continuous treatment device is installed is 2 m ³ .

[0102]

[Table 3]

As can be understood from the measurement results shown in Table 3 above, according to Example 3, the treated water returned into the pond has an increased dissolved oxygen and has other polluting components. Is almost less than half, indicating that the water quality has been sufficiently improved.

[0104]

According to the first aspect of the present invention, the particulate filter medium is disposed at a position slightly higher than the bottom of the purified water area by the pedestal member, and a space between the upper and lower parts is provided by the pedestal member. Is allowed to circulate, and a magnetic effect is exerted on the water requiring treatment flowing therethrough. Therefore, as described above, after the treated water is treated under favorable conditions for purification, it can be reliably circulated through the granular filter medium, and thus the water can be purified efficiently. It becomes.

A second aspect of the present invention is the water quality preserving and purifying apparatus in the purifying water area according to the first aspect of the present invention, wherein the pedestal member is a plate-like member having a large number of holes opened on an average and a lower surface thereof. Therefore, according to the water quality preservation and purification device in the purifying water area of the second aspect of the present invention, by simply installing this at the bottom of the purifying water area, An appropriate gap through which the water to be treated can flow can be formed below, and the water to be treated can flow through many holes between the upper and lower portions. Therefore, when the granular filter medium is placed in a layer on this, the water required for treatment is circulated through the medium, and the decomposition of the organic substances contained therein can be favorably advanced.

[0106] A third aspect of the present invention is the water quality preservation and purification apparatus in the purifying water area according to the first or second aspect of the present invention, wherein the granular filter medium is formed into a porous granular member, and the granular filter medium is formed on the pedestal member. Therefore, according to the apparatus for preserving and purifying water in the purifying water area according to the third aspect of the present invention, aerobic, anaerobic and facultative anaerobic fungi are favorably contained in the granular member. Therefore, it is possible to satisfactorily purify the water to be treated in the water to be purified, that is, to effectively decompose the organic matter.

A fourth aspect of the present invention is the water quality preserving and purifying apparatus in the purifying water area according to the first, second or third aspect of the present invention, wherein the forced circulation means is arranged to collect the required water from below the pedestal member. A water collection pipe arranged there, an upright pipe having a lower end connected to the water collection pipe and an upper end opened directly below the water surface,
An air introduction pipe connected to the upright pipe to introduce air thereinto raise the required water therein, and compressed air generating means for sending air to the air introduction pipe. Therefore, according to the apparatus for preserving and purifying water in the purifying water area of 4 of the present invention, the water below the pedestal member can be pumped to the vicinity of the water surface of this water area with a simple configuration, and through this, According to the present invention, a flow of water circulating between above and below the pedestal member can be generated via the granular filter medium layer placed on the pedestal member. In addition, since the required water is raised by utilizing the air lift effect, the aeration effect can be obtained at the same time by operating the forced circulation means.

According to a fifth aspect of the present invention, in the water quality preserving and purifying apparatus in the purified water area according to the fourth aspect of the present invention, the magnetic unit is provided with at least one pair of poles having opposite poles facing each other with the upright pipe interposed therebetween. Therefore, according to the apparatus for preserving and purifying water in the purified water area according to 5 of the present invention, the treated water is efficiently actuated in the process of passing through the upright pipe, The hydrated ions and associative water molecules therein are dispersed, and the water molecules are separated from the complex bonds into simple bonds. As a result, as described above, since an interval between molecules occurs in the water to be treated, oxygen and the like are easily dissolved, and aerobic microorganisms are also easily propagated. In addition, SS also tends to settle, which facilitates further purification of the water to be treated.

A sixth aspect of the present invention is the water quality preserving and purifying apparatus in the purifying water area according to 1 of the present invention, wherein the purifying water area comprises:
It is a pool-like water area constructed by embedding a water tank with a large number of infiltration holes on the peripheral side so that the upper part is open on the ground surface, and has an introduction pipe for introducing the water required for treatment into the pool-like water area. In addition, the granular filter medium is piled up near the water surface along the inner peripheral side of the pool-like water area. Therefore, the water quality preservation and purification apparatus in the water purification area requiring purification according to 6 of the present invention is improved. For example, domestic wastewater or other water to be treated is guided by the introduction pipe into a pool-like water area, which is the water area requiring purification, and inside the same, purifying is performed in the same manner as in the first aspect of the present invention. Water that has been subjected to purification treatment can be made to permeate the water.

A seventh aspect of the present invention is that a pedestal member formed of a member through which water to be treated can pass up and down is provided between the water bottom and the water bottom in a water channel which is a purified water area. A filter medium having a plurality of ceramic pipes held by a frame is installed at regular intervals along the flow direction on the pedestal member, and a granular filter medium is arranged therebetween. In addition, the forced circulation means for generating forced circulation of the water required for treatment flowing between the lower part and the upper part of the pedestal member, and a water collecting pipe arranged below the pedestal member, and collected by the collecting pipe A return pipe for returning the treated water upstream and above the pedestal member, and a forced circulation means constituted by a pump means inserted for performing the return operation in the middle of the return pipe, are disposed. In the middle of water collection pipe or return pipe Aeration means for forming magnetic means for applying a magnetic action to the water to be treated flowing therethrough, and for supplying air into the water to be treated through a filter medium holding a plurality of ceramic pipes to the frame from below the pedestal member. Is a water quality preservation and purification device in the water purification required area.

Therefore, according to the apparatus for preserving and purifying water in the purifying water area according to the present invention, the water channel which is the purifying water area includes a river, an irrigation canal, or a drainage treatment facility formed in a water channel shape. Even in the case of a flow-like grooved water area, the water flowing therethrough is contaminated with organic matter and the like, and it can be particularly targeted when purification is required.

According to the water quality preserving and purifying apparatus in the purifying water area according to the seventh aspect of the present invention, if the operation of the forced circulation means and the operation of the aeration means are continued, the water flowing from the upstream to the downstream is required. Are often circulating flows, and their treated water is affected by the magnetic means each time,
In addition, it receives the action of the microorganisms in the two filter media each time and receives the supply of air by the aeration means. Thus, favorable conditions for purification are prepared by the magnetic means and the aeration means, and under the favorable conditions, microorganisms in the two filter media can favorably decompose organic substances contained in the treated water. , Almost complete purification.

[Brief description of the drawings]

FIG. 1 is an explanatory side view showing a water quality preservation and purification device in a purification-required water area according to a first embodiment.

FIG. 2 is a partially cutaway plan view showing a pedestal used in a water quality preservation and purification apparatus in a purified water area according to the first embodiment, and piping for circulating and backwashing the treated water required disposed therebelow.

FIG. 3 is a side view of a magnetic unit used in the water quality preservation and purification device in the purification-required water area according to the first embodiment.

FIG. 4 is a cross-sectional view of a magnetic means used in the water quality preservation and purification device in the purification-required water area according to the first embodiment.

FIG. 5 is an explanatory side sectional view of a backwash pipe used for a water quality preservation and purification device in a purification-required water area according to the first embodiment.

FIG. 6 is an enlarged front cross-sectional view of a backwash pipe used for a water quality preservation and purification apparatus in a purification-required water area according to the first embodiment.

FIG. 7 is an explanatory side view showing a water quality preservation and purification device in a purification-required water area according to a second embodiment.

FIG. 8 is a schematic explanatory view showing a side wall of a water tank used for a water quality preservation and purification device in a purification-required water area according to a second embodiment.

FIG. 9 is an explanatory side view of a water quality preservation and purification device in a purification-required water area according to a third embodiment.

FIG. 10 is a schematic explanatory view showing a forced circulation pipe used for a water quality preservation and purification apparatus in a purification-required water area according to a third embodiment.

FIG. 11 is a schematic enlarged perspective view showing a ceramic pipe held by a frame supporting filter used in a water quality preserving and purifying apparatus in a purifying water area according to a third embodiment.

[Explanation of symbols]

 1, 11, 21 Base 1a Flow holes 1b, 11b, 21b Seat plates 1c, 11c, 21c Legs 2, 12, 22 Circulation pipes 2a, 12a, 22a Water collection pipes 2b, 12b Upright pipes 2c, 12c, 22c Water collection Holes 2d, 12d Air inlet pipes 3, 13, 23 Backwash pipes 3a, 13a Spout pipes 3b, 13b Upright pipes 3c, 13c Spout holes 4, 14, 24 Granular filter media 5, 15, 25 Magnetic means 5a Permanent magnet 5b Case 22d Pump device 23a Electromagnetic valve 23b Nozzle pipe 26 Orbiting screen 27 Cage-shaped container 28 Aeration pipe 29 Frame support filter medium 30 Air supply pipe s Water surface t Water tank T Treatment tank R Water path W Side wall

Claims (7)

[Claims] A pedestal member made of a member through which water can pass up and down is provided on the bottom of the water requiring purification, with a gap through which water can flow between the pedestal member and the bottom. And arranging a particulate filter medium on the pedestal member, and additionally providing a forced circulation means for generating a forced circulation of water flowing between below and above the pedestal member, and A water quality preservation and purification device in a water area requiring purification provided with magnetic means for applying a magnetic effect to the water. 2. The apparatus for preserving and purifying water in a purifying water area according to claim 1, wherein said pedestal member comprises a plate-like member having a large number of holes opened on average and a plurality of legs hanging from the lower surface thereof. . 3. The granular filter medium is constituted by a porous granular member, which is laid in layers on the pedestal member.
Or 2) a water quality preservation and purification device in the purifying water area. 4. A water collecting pipe arranged to collect the water to be treated from below the pedestal member, a lower end connected to the water collecting pipe, and an upper end opened directly below the water surface. An upright pipe, an air introduction pipe connected to the upright pipe and introducing air into the upright pipe so as to raise required water therein, and compressed air generating means for sending air to the air introduction pipe. 4. The apparatus for preserving and purifying water quality in a purifying water area according to claim 1, 2 or 3. 5. The apparatus for preserving and purifying water in a purification-required water area according to claim 4, wherein said magnetic means comprises a pair or more of permanent magnets having opposite poles facing each other across said upright pipe. 6. The pooled water area, wherein the purifying water area is a pool-shaped water area formed by burying a water tank having a large number of infiltration holes on the peripheral side so that an upper part thereof is open on the ground surface. 2. An apparatus for preserving and purifying water in a purification-required water area according to claim 1, wherein an introduction pipe for introducing treated water into the water area is arranged, and in addition, the granular filter medium is arranged near the water surface along an inner peripheral side of the pool-like water area. . 7. A pedestal member formed of a member through which water to be treated can pass up and down in a water channel which is a purified water area, and the water to be treated flows between the base member and the water bottom. A filter medium having a plurality of ceramic pipes held in a frame is installed at regular intervals along the flow direction on the pedestal member, and a granular filter medium is arranged therebetween. A forced circulation means for generating forced circulation of the water to be treated flowing between the lower part and the upper part of the pedestal member, and a water collecting pipe disposed below the pedestal member, and the effluent water collected by the collecting pipe. A return pipe, which is returned upstream and above the pedestal member, and a forced circulation means constituted by a pump means inserted to perform the return operation in the middle of the return pipe, are disposed. In the middle of the return piping, Magnetic means for applying a magnetic effect to the flowing water to be treated; and aeration means for supplying air into the water to be treated through the vicinity of a filter medium holding a plurality of ceramic pipes in the frame from below the pedestal member. Water quality preservation and purification equipment in the water area requiring purification.