JPH09234482A - Florting type water quality purifying device and water quality purifying method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floating type water quality purifying device realizing effective water quality cleaning, and a water quality cleaning method using this device. SOLUTION: This device is constituted by floating a device main body 50 in water, which is provided with a cylindrical support 2 suspended from a float 1, a storage container 9 housing an aeration device 10, magnetically ionized water generator 17 and an underwater fan 6, and the dissolved oxygen, water temp. and water pollution degree are contrived to be uniformed by performing an effective flow circulation and aeration among the upper layer, the intermediate layer and the lower layer of the water. Also, effective water quality cleaning is performed by microorganism under the constitution consisting of the device main body 50 and a biological reactor provided with an automatic control device by which a biological injection liquid and a biological activating liquid are diffused in accordance with the degree of pH of the water in response to a pH sensor.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention reduces nitrogen and phosphorus in water of a relatively highly eutrophic closed sea area (inner bay, etc.) where there is little or no flow of water, ponds, lakes, etc.,
By suppressing photosynthesis of phytoplankton such as diatoms and cyanobacteria that cause red tide (freshwater algae) and red tide, and promoting the activity of animal microorganisms, COD (chemical oxygen demand) or BOD (raw oxygen) The present invention relates to a water purification device and a water purification method that reduce the chemical oxygen demand).

[0002]

2. Description of the Related Art In Japan, environmental standards for nitrogen and phosphorus and drainage standards were enforced in closed sea areas in 1993. When nitrogen and phosphorus, which are nutrient salts, are present, they absorb carbon dioxide in the air. A large amount of algae that cause red tide by photosynthesis are generated, or the algae that have proliferated are precipitated and decomposed and the anaerobic anoxic water mass is formed, resulting in the death of benthic fish and shellfish due to the generation of blue tide. doing.

As described above, even if the sea is vast, if the pollutants (agricultural fertilizers, detergents, organic pollutants) continue to flow in, the self-cleaning ability of the sea will be limited, and there is a danger of becoming a dead sea. is there.

On the other hand, when polluted water pollutes a small amount of water, such as ponds, lakes and rivers, aerobic bacteria (which oxidize organic substances) are rapidly dissolved oxygen (disso).
lved oxygen (DO for short) is absorbed.

In this respect, when the water surface is very wide, oxygen dissolves faster than the rate of absorption by bacteria, so dissolved oxygen is maintained, but when the water surface is small, it becomes an anaerobic environment and the self-cleaning action deteriorates. , Creatures such as fish cannot live there.

As described above, pollution of closed sea areas such as rivers, lakes and marshes significantly reduces the amount of stored oxygen and upsets the ecosystem, and eventually breeds even without oxygen, such as hydrogen sulfide. It becomes barren rivers, lakes and marshes, where odors are present and there is no living thing other than anaerobic bacteria that produce toxic gases, and sludge is deposited.

[0007] Therefore, in order to prevent eutrophication of inner bays, rivers, lakes and marshes, and to conserve the water sources of rivers and lakes, it has become important to develop and popularize water purification treatment devices capable of removing nitrogen and phosphorus.

Aeration is a treatment process for improving the pollution of the water source. This aeration utilizes the natural oxidative action to suspend the C
This is a method of lowering OD or BOD.

In the above method, oxygen is generally supplied by sending bubbles from the lower part of the aeration tank into the water.

[0010]

However, in the conventional water purification apparatus or water purification system, the enormous size of the apparatus, the high cost, the complexity of maintenance and the like are problems that cannot be ignored.

Further, the above-mentioned conventional water purification apparatus has a structure in which the main body is fixedly installed on the ground (at the water's edge) or at the bottom of the water, which is inferior in maneuverability and causes sludge of the bottom mud to be rolled up during aeration by a pipe. It was difficult to purify a wide area.

Therefore, for example, it was not possible to selectively selectively purify a place in a lake or marshes with a poor transparency or a breeding place for blue-green algae by one water purification device.

Further, the injection of the bio-injection in the conventional water purification apparatus is always blindly performed regardless of the COD value in the water, but this is wasteful and there is a problem in terms of maintenance cost.

The present invention has been made in view of the above circumstances, and is a floating type water purification system in which the device is not fixed to the land or the bottom of the water but floated in the water of the target inner bay, river or lake. The equipment is easy to move, and the entire equipment floats without causing sludge sludge to wind up, and the dissolved oxygen is homogenized and the water temperature is kept constant by the circulation of the upper, middle, and lower layers. The present invention relates to a floating-type water purification device and a water purification method, which are capable of homogenizing nutrients, preventing the generation of algae, and stabilizing the upper and middle microbial layers.

[0015]

Means for Solving the Problems (1) The float, a cylindrical strut suspended from the float and having a length of 1 to 6 m corresponding to the water depth, and arranged below the cylindrical strut. The submersible fan that sucks the surrounding water into the cylindrical strut from the inlet port opened on the peripheral wall near the lower end of the cylindrical strut and pushes it up to the opening at the upper end of the cylindrical strut, and is fixed under the cylindrical strut And a tubular support which is disposed in a storage container in which a plurality of ejection ports are disposed below the side wall surface, and which is disposed on the side wall of the storage container of the bakulator and sucks up water around the lower end of the bakulator. A submersible pump for delivering the water through a pipe inward and downward, a magnetic ion water generator arranged in the middle of the pipe so that water sucked up by the submersible pump may pass, and a magnetic ion water generator provided outside the storage container of the bakulator. With pH sensor , PH of the pH sensor
A transmission line for transmitting the detected electric signal to the water or the ground, and a bio-injection system that is arranged on the water or on the ground and that receives the pH detection electric signal from the transmission line and contains an amount of photosynthetic bacteria corresponding to the pH degree in the water. And a bioreactor for feeding a bioactive liquid containing a liquid and an activator of animal microorganisms into the storage container through an injection pipe, and an automatic control device for the bioreactor. It achieves the task.

(2) Further, the float of the floating type water purification apparatus described in (1) above is floated on the water surface and made to stand still, and the length of the cylindrical support is set so that the lower end of the storage container of the bakulator is approximately 1 m above the water bottom. And the aforesaid bakerator is a circular bakerator that generates bubbles in all directions in the horizontal direction of 360 °, so that air bubbles are ejected in the range of a radius of 10 to 30 m around the bakerator to perform aeration. The purification method achieves the above object.

(3) Further, in the water purification method according to the above (2), middle-layer water is sucked from an inlet port opened in the peripheral wall near the lower end of the cylindrical support and is discharged from the open port at the upper end of the cylindrical support to the upper layer. As it circulates, the anaerobic lower layer water around the lower end of the back up is sucked up by the submersible pump, converted into aerobic water by the magnetic ion water generator, and sent out to the inside of the cylindrical strut to the upper end of the cylindrical strut. The above problem is achieved by a water purification method characterized by making the dissolved oxygen in the water, the water temperature, and the degree of pollution uniform by circulating the water from the open port to the upper layer.

(4) In addition, in the water purification method according to the above (2) or (3), the pH in water is received by receiving the pH detection electric signal of the pH sensor only when the pH degree in water exceeds a predetermined value. The water quality is characterized by controlling the bioreactor with an automatic controller so that the bioinjection solution and the bioactive solution are continuously or intermittently fed through the injection pipe into the storage container of the bacillator until the temperature falls below a predetermined value. The above object is achieved by providing a purification method.

The bio-injection means a bio-solution containing aerobic or anaerobic bacteria, and mainly contains photosynthetic bacteria.

Further, the submersible fan, the bacillator, and the submersible pump are operated by a motor, but of course, this apparatus has a power supply equipment for a drive system on land.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a floating-type water purification device and a water-purifying method using the floating-type water purification device according to the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a front view for explaining the overall structure of the main body of the floating-type water purification device according to the present invention.

FIG. 2 is an underwater plan view of the floating type water purification device.

FIG. 3 is a vertical cross-sectional view for explaining the structure of the inside and outside of the bacillator of the floating type water purification device and its storage container.

FIG. 4 is a view for explaining aeration by the floating type water purification device.

FIG. 5 is a diagram for explaining the circulation of the intermediate layer water by the floating type water purification device.

FIG. 6 is a view for explaining the circulation of lower layer water by the submersible pump and the magnetic ion water generator of the floating type water purification device.

FIG. 7 is a diagram showing an entire circulation path of water purification using the floating type water purification apparatus.

FIG. 8 is a configuration diagram for explaining the configuration of injection of bio-injection liquid and bio-active liquid in the floating type water purification device.

1 to 3, a main body 50 of a floating-type water purification device according to the present invention comprises a float 1 and a cylindrical column having a length H = 1 to 6 m which is suspended from the float 1 and corresponds to the water depth. 2, and an inlet 5 at the upper end of the cylindrical strut by sucking ambient water into the cylindrical strut through an inlet 4 which is arranged below the cylindrical strut and opened in a peripheral wall near the lower end of the cylindrical strut. Submersible fan 6 that pushes up to, a bacillator 10 that is fixedly arranged under the cylindrical column 2, and is arranged in a storage container 9 in which a plurality of jet outlets are arranged below the side wall surface, and the bacillator 10 is stored. A submersible pump 15 disposed on the side wall 11 of the container 9 for sucking up water around the lower end of the backwater and sending it out through the pipe 13 to the lower part of the inside of the cylindrical support, and a pipe midway through which the water sucked up by the submersible pump passes. Magnetic field A down water generator 17, pH sensor 1 is disposed on the outside of the container 9 of the Bakkireta 10
9 and a transmission line 21 for transmitting the pH detection electric signal of the pH sensor to the ground, and as shown in FIG. 8, the bioreactor 30 installed on the ground and its automatic control device (incorporated in the bioreactor) ) Receives a pH detection electric signal from the transmission line 21, and supplies a bio-injection solution containing photosynthetic bacteria in an amount corresponding to the pH degree in water and a bio-active solution containing an activator of animal microorganisms through injection tubes 23 and 25. It is designed to be sent into the storage container 9 of the main body 50 of the floating-type water purification device.

Reference numeral 3 is a code cover, and reference numeral 3
Reference numeral 5 denotes electric cords such as a submersible pump and a motor, which are wired to a power supply device on the ground.

Next, each of the above parts will be described in detail.

First, the float 1 has a diameter of 60 to 100 cm.
It is a large spherical float made of plastic of about 2 to
Six pieces (usually four pieces) are symmetrically assembled in a horizontal state so that the following cylindrical column 2 is stably suspended below the center.

The cylindrical column 2 has a diameter of about 60 cm and a length of 1 to
6m (depending on the depth of water of the target river, lake, cove, etc.) made of stainless steel, the upper end has an opening 5, and the upper end is located 10 to 20 cm below the water level WL. The float 1 is suspended and supported by a connecting tool such as a chain.

The lower end of the cylindrical support 2 is a back-up device 1 which will be described later.
It is fixed to the storage container 9 of 0.

In addition, an inlet port 4 (opening size 10 cm) for introducing water from the surroundings is provided in the peripheral wall near the lower end of the cylindrical column 2.
X 10 cm) on each side of the storage container (8-3)
About 6 pieces are drilled.

A submersible fan 6 (driven by a motor 7 at a relatively low speed) is provided near the lower end of the cylindrical column 2, that is, on the upper surface of the storage container 9 in which the back-up device 10 is stored. It is configured such that the surrounding middle-layer water and lower-layer water are sucked up from the inlet 4 into the cylindrical column 2 and slowly pushed upward, and are jetted and diffused from the upper opening 5 to the upper layer (below the water surface).

The back-up device 10 has a height and width of 1.6 m and a height of 1.
An aeration device housed together with an air pump 12 in a box-shaped or cylindrical stainless steel container 9 having a diameter of about 5 m, which is attached to the outer wall of the cylindrical column 2 and has an inner diameter of about 5 cm. The air is drawn out from the opening 5 of the cylindrical support 2 by about 30 cm, and the upper end opening is exposed above the water surface with the apparatus body 50 floating. From the above, small bubbles are ejected in a circular shape at a horizontal angle of 360 degrees (a large number of bubble generating ports 16 are provided in four directions on the lower side of the side wall 11 of the storage container 9).

Further, four small submersible pumps 15 are arranged on the outer side of the storage container 9 with their suction ports facing downward, suck up the anaerobic water in the lower layer and generate magnetic ionized water through the pipe 13 (inner diameter 20 mm). After passing through the device 17, it is converted into aerobic water and introduced into the lower part of the cylindrical support 2, and the submersible fan 6
It is pushed up by and is sprayed to the upper layer with the water in the middle and lower layers and diffused.

The magnetic ion water generator 17 is 1250.
A strong permanent magnet with a residual magnetic flux density of 0 G (Gauss) and a maximum energy product (B · H) MAX = 40 MGOe is N
It has a structure in which a tube (passage) having a diameter of 20 mm is passed through a combination of poles and S poles that are alternately oriented so that a magnetic field is formed intermittently, and anaerobic water passes through the intermittent magnetic field. As a result, water molecules undergo hydrospin motion, water clusters are decomposed, and ionic bonds are enhanced,
This is a device that is subjected to a magnetic treatment to increase the dissolved oxygen amount of anaerobic water (abbreviated as DO) by about 14% to make it aerobic water.

Bioinjection is a solution containing photosynthetic bacteria. This photosynthetic bacterium refers to a bacterium that performs photosynthesis in a broad sense, and is not H ₂ O as an electron donor, but H ₂ , S ^2- , S ₂ O ₃
^2- , organic compounds, etc. are used, so that O2 generation due to carbonic acid reduction does not occur.

In the present application, a type of photosynthetic bacterium that grows in an anaerobic environment depending on light energy is used. That is,
It has the property of moving to the anaerobic layer at the bottom of the water during the bright daytime and moving to the upper layer during the dark night.

The bioactive liquid is a biosolution consisting of 87 element preparations containing various amino acids that activate animal microorganisms that feed on nutrient salts in water and a trace amount of deuterium.

The pH sensor 19 is a device for measuring the acidity in water and converting it into an electric signal, and uses an existing device.

The pH detection electric signal of the pH sensor 19 is transmitted through a transmission line 21 to an automatic control device (a so-called electronic control device by a microcomputer) of the bioreactor 30 on the ground.

The bioreactor 30 installed on the ground (or on the water) is also referred to as a "bioreactor", and a reactor (reactor) in which a biocatalyst of a microorganism or an enzyme is immobilized is put in the bioreactor 30 to utilize its activity as a living organism. To produce photosynthetic bacteria and bioactive liquid in bioinjection.

The above-mentioned bio-injection solution and bio-active solution have a relatively high pH when the transparency of water is poor and the degree of contamination is high.
The pH sensor 19 senses the degree, and when the value exceeds a predetermined value, a predetermined amount of the bio-injection liquid and the bio-active liquid are automatically injected into the vicinity of the bacillator 10 in the storage container 9 through the injection pipes 23 and 25 (inner diameter 13 mm). To be done.

Next, a water purification method using the floating type water purification apparatus having the above structure will be described.

First, as for aeration, as shown in FIG. 4, the float 1 of the floating type water purification apparatus main body 50 is floated on the water surface, and the anchor 34 is sunk to the bottom B under the storage container 9 to stand still. The length H1 of the support column 2 is set so that the lower end of the storage container 9 of the back-up device 10 is approximately 1 m
At the height (h) of the water, the air above the water is sucked in by the air pump 12 through the ventilation pipe 14, and bubbles are generated as fine bubbles in the circular type bakulator 10 that generates bubbles K in all directions in the horizontal direction of 360 °. The circular radius R1 = 10
Aeration is performed in the range of up to 30 m.

As a result, dissolved oxygen is increased and COD or BOD is lowered by the oxidation of the contaminants by the suspended suspended microorganisms.

Next, the improvement of the purification efficiency by the circulation flow in which the middle layer water and the lower layer water are sucked up and circulated to the upper layer will be described.

Generally, the contaminated water source is separated into aerobic upper water, slightly aerobic middle water and anaerobic lower water, and the degree of pollution is not uniform, and decomposition by microorganisms is performed very efficiently. It's not something that has been confused. Also, the water temperature is not uniform, and when the water temperature is high, the solubility of oxygen decreases and its concentration decreases.

Therefore, in order to effectively purify the water quality, it is desirable to make the water temperature, dissolved oxygen (DO) and the degree of pollution uniform.

In order to make the above uniform, as shown in FIG. 5, a large number of inlets 4 (opening size: 10 cm × 10 cm) for opening the middle layer water (black arrow) in the peripheral wall near the lower end of the cylindrical support 2.
From the submersible fan 6 to diffuse circularly to the upper layer from the opening 5 at the upper end of the cylindrical strut to recirculate, and as shown in FIG. (Black arrow) is sucked up by a small submersible pump 15 without rolling up the sludge on the bottom of the water (the lid is closed, and the suction port of the submersible pump 15 is about 1 m above the bottom B of the water.) And the pipe 13 (about 20 mm inside diameter) It passes through the magnetic ion water generator 17, is converted into aerobic water, is introduced into the lower part of the cylindrical column 2, and is pushed up by the submersible fan 6 together with the middle layer water to the upper opening 5 and ejected to the upper layer. And circularly diffuse (the radius R3 of diffusion is about 30 m).

Therefore, since the dissolved oxygen in the water, the water temperature, and the degree of pollution can be made uniform, the photosynthesis of the upper layer water is prevented, the generation of algae is prevented, and the upper and middle microbial layers are also stabilized. Further, the anaerobic lower layer becomes slightly aerobic, and hydrogen sulfide, butane, ammonia, etc. generated by sludge and the like are digested and reduced by microorganisms in the lower layer.

It has been found that the diffusion circulation range extends to a radius R3 = 30 m when the water depth is 5 m.

The improvement of the purification efficiency by the above aeration and circulating flow of each layer is illustrated in FIG.

The circulation flow of each layer is extremely effective and efficient,
It turns out that aeration is performed at the same time.

Next, by maintaining the proper amount of photosynthetic bacteria and microorganisms by introducing the bio-injection solution and the bio-active solution, COD,
A water purification method for reducing BOD will be described.

Conventionally, the above-mentioned bio-injection solution or bio-active solution is always added to the water source, and the management of water quality improvement has been quite rough.

In this respect, needless to say, it is desirable to timely and carefully control the replenishment and activation of microorganisms by stopping the injection of bio-injection or the like when it is clean.

In the present invention, the above management is performed by controlling the pH degree in water and CO
Paying attention to the correlation of D, the pH degree in water is a predetermined value (for example, pH
Only when the pH exceeds 8.0), the pH detection electric signal S of the pH sensor 19 is received via the transmission line 21 as shown in FIG. 8 until the pH degree in the water falls below a predetermined value (eg pH 7). Liquid and bioactive liquid are continuously or intermittently passed through injection pipes 23 and 24, and a storage container 9 for a bakulator is provided.
This is a method of controlling the bioreactor 30 provided on the ground so as to be fed into the inside by an automatic control device (a device that controls an injection amount by microcomputer control by an electric signal of a pH sensor).

The bio-injection liquid and the bio-active liquid injected into the storage container 9 are diffused into a circular shape with the ejection of air bubbles from the aeration.

The above injection is not always performed, but is normally stopped, and the pH is measured constantly or regularly to inject an appropriate amount of the bio-injection solution and the bio-active solution. No need to inject until needed
Effective supply of photosynthetic bacteria and activation of animal microorganisms are realized.

The quantitative and temporal control of the injection can be easily realized by an injection device automatically controlled by a microcomputer attached to the bioreactor 30, but of course the injection amount, bioinjection, and bioactive solution. Should be properly adjusted according to the characteristics of the water source.

The bioreactor 30 and its automatic control device may be floated on the water instead of on the ground like a raft by the float 1, but in any case, the power supply device must be installed on the ground.

The floating-type water purification apparatus of the present invention having the above-mentioned configuration does not fix the apparatus main body 50 to the land as in the conventional case, but rather to the target inner bay or lake or small flow where the flow does not occur. It is a floating-type water purification device that floats in the water of a river, is easy to move, and has a structure in which the aeration aquarium 10 is located above the water bottom and ejects bubbles in the horizontal direction. Since the circulation of aerobic upper water, slightly aerobic middle water, and anaerobic lower water does not take place, the dissolved oxygen in water is made uniform, and the water temperature is kept constant.
Nutrients can be made uniform, algae are not generated in the upper layer, and the microbial layers in the upper and middle layers are stable, and efficient and effective water purification of the water source is realized at low cost. It is clear that

[0068]

The floating-type water purification device and the water purification method according to the present invention have the following effects.

(1) Since it is a floating type, it is easy to move and has an excellent effect that water quality can be effectively purified at a place where purification is required.

(2) Since the bio-injection solution and the bio-active solution are added only in a required amount when needed, there is an excellent effect that there is no waste and the maintenance cost is low.

(3) By incorporating a magnetic ion water generator, the anaerobic lower layer water is converted into aerobic water and circulated without rolling up the sludge on the bottom of the water, so that the amount of dissolved oxygen increases uniformly over the upper, middle and lower layers. It has the excellent effect of

(4) Since aeration is combined with aerobic aeration of the lower anaerobic water, circulation of the middle and lower layers of water, bioinjection and injection of bioactive liquid, nitrogen by activation of photosynthetic bacteria and animal microorganisms is combined. In addition, it has an excellent effect that phosphorus is reduced and dissolved oxygen is secured uniformly in the upper, middle and lower layers.

[Brief description of drawings]

FIG. 1 is a front view for explaining an overall configuration of a main body of a floating-type water quality purification device according to the present invention.

FIG. 2 is an underwater plan view of the floating type water purification device.

FIG. 3 is a vertical cross-sectional view for explaining the configuration of the inside and outside of the bacillator of the floating type water purification device and its storage container.

FIG. 4 is a diagram for explaining aeration by the floating water purification device.

FIG. 5 is a diagram for explaining the circulation of middle-layer water by the floating-type water purification device.

FIG. 6 is a diagram for explaining the circulation of lower layer water by the submersible pump and the magnetic ion water generator of the floating type water purification device.

FIG. 7 is a diagram showing an entire circulation path of water purification using the floating type water purification apparatus.

[Fig. 8] Fig. 8 is a configuration diagram for explaining a configuration of a bio-injection liquid and a bio-active liquid input of the floating type water purification device.

[Explanation of symbols]

 1 Float 2 Cylindrical Strut 3 Cord Cover 4 Inlet 5 Open Port 6 Submersible Fan 9 Storage Container 10 Buckulator 11 Sidewall 12 Air Pump 13 Piping 14 Venting Pipe 15 Submersible Pump 16 Bubble Generation Port 17 Magnetic Ion Water Generator 19 pH Sensor 21 Transmission Line 23, 25 Injection pipe 30 Bioreactor 34 Anchor 50 Main body of floating type water purification device WL Water surface B Water bottom

Claims (4)

[Claims] 1. A float, a cylindrical support hanged from the float and having a length of 1 to 6 m corresponding to the water depth, and a peripheral wall near the lower end of the cylindrical support disposed below the cylindrical support. A submersible fan that sucks ambient water into the cylindrical support from the opened inlet and pushes it up to the open port at the upper end of the cylindrical support, and a jet port that is fixedly arranged under the cylindrical support and located below the side wall surface. A bacillator arranged in a plurality of storage containers arranged, and a submersible pump which is arranged on the storage container side wall of the bakulator and sucks up water around the bottom end of the bacillator and sends it out through a pipe to the lower part of the cylindrical support. A magnetic ion water generator disposed in the middle of the pipe so that water sucked up by the submersible pump can pass through, a pH sensor disposed outside the accommodating container of the bacillator, and a pH detection electricity for the pH sensor. Belief And a bioinjection which is disposed on the water or on the ground and which receives a pH detection electric signal from the transmission line and contains an amount of photosynthetic bacteria corresponding to the pH degree in the water. A floating-type water purification device having a structure comprising a bioreactor for sending a bioactive liquid containing an activator of animal microorganisms into the storage container through an injection pipe and an automatic control device for the bioreactor. 2. The float of the levitation type water purification apparatus according to claim 1 is floated on the water surface and made to stand still, and the length of the cylindrical support is set such that the lower end of the storage container of the bacillator is approximately 1 m above the water bottom. By making the above-mentioned back-up device a circular back-up device that generates bubbles in all 360 ° horizontal directions,
A water purification method characterized by performing aeration by ejecting bubbles in a radius of 10 to 30 m around a bacillator. 3. The water purification method according to claim 2,
Middle-layer water is sucked in from the inlet opened in the peripheral wall near the lower end of the cylindrical support, and circulates to the upper layer from the opening at the upper end of the cylindrical support. It is then converted into aerobic water by the magnetic ionized water generator, and it is sent to the lower part of the cylindrical column and is circulated to the upper layer from the opening at the upper end of the cylindrical column, thereby dissolving oxygen in the water, water temperature, and pollution. A method for purifying water, which is characterized by equalizing the degree. 4. The water purification method according to claim 2, wherein the pH detection electric signal of the pH sensor is received only when the pH degree in the water exceeds a predetermined value.
The water quality is characterized by controlling the bioreactor with an automatic controller so that the bioinjection solution and the bioactive solution are continuously or intermittently fed through the injection pipe into the storage container of the bacillator until the temperature falls below a predetermined value. Purification method.