JPH07246385A - Water purifying system - Google Patents

Abstract

PURPOSE:To provide a water purifying system which executes a water quality reforming treatment in a storage pond by the effect of deodorization, decoloration, sterilization, etc., particularly with ozone and discharge of the flocculated precipitate of the storage pond with the water purifying system for executing a water purifying treatment of water. CONSTITUTION:The base of the storage pond 100 is formed as a slope 110 having an approximately funnel-like sectional shape. A discharge port 107 is formed in the deepest part of the slope 110. The water of the storage pond 100 is taken in by a screw filter flow passage 11 and a discharge flow passage 12. The ozone in a fine grained air bubble state generated from an ozone foaming section 2 is mixed with the taken-in water. The water mixed with the ozone is released from a discharge port 13 of the discharge flow passage 12 disposed under the water surface of the storage pond 100 toward directions exclusive of the region where the discharge port 107 of the storage pond 100 is formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purification system for purifying water, and more particularly to water for improving water quality in a reservoir and discharging aggregated deposits in the reservoir by the action of deodorizing, decolorizing and sterilizing ozone. Regarding purification system.

[0002]

2. Description of the Related Art Conventionally, a water purification system of this type has been shown in FIG. FIG. 4 is a schematic sectional view of a conventional water purification system. In the figure, a conventional water purification system is a filter 1 installed below a water surface 101 of a reservoir 100 to be purified and for filtering dust contained in water.
A screw 4 arranged in the filtration flow path 11 of the filter 1 for taking in water from the reservoir 100 into the filter 1 and discharging the filtered water; a motor 5 for rotationally driving the screw 4; This is a configuration including a power source 60 that supplies electric power to the motor 5.

Next, the operation of the conventional device based on the above configuration will be described. First, the electric power from the power source 60 is supplied to the motor 5
Is supplied to the motor 4, the motor 5 is driven to rotate the screw 4 via the drive shaft 51. Due to the rotation of the screw 4, the water in the pond 100 is filtered through the filter 1, and is pumped from the filtration flow channel 11 in the filter 1 to the discharge flow channel 12 and discharged to the reservoir 100. In this way, the water in the reservoir 100 can be continuously purified by filtering the water in the pond 100 with the filter 1 and further sucking / discharging from the filtration channel 11 of the filter 1 to the discharge channel 12 to circulate the water. Become.

[0004]

Since the conventional water purification system is configured as described above, it is not sufficient to remove dust from ponds, etc.
There is a problem that water quality improvement such as sterilization cannot be performed. As a device for improving the water quality, a coagulant
A chemical treatment method by introducing an algaecide or the like or a water purification system utilizing the oxidizing power of ozone can be considered. However, the water purification system using ozone has a problem that the solubility of ozone in water to be purified is poor and the purification efficiency for improving water quality is low.

In both the chemical treatment method and the water purifying apparatus using ozone, it is necessary to perform a discharging operation or install a separate discharging apparatus in order to discharge the sediment accumulated on the bottom surface of the reservoir due to agglomeration or the like. Had a problem. The installation of such an exhaust device increases the scale of equipment as a water purification system and increases the maintenance cost.

The present invention has been made to solve the above problems, and an object of the present invention is to propose a water purification system for removing and discharging dust contained in water to be purified and improving purification efficiency for improving water quality. And

[0007]

A water purification system according to the present invention includes a reservoir for storing water to be purified, the water taken in from a water inlet, and the taken water is discharged to the reservoir again from a water outlet. In a water purification system comprising a recirculation means for causing water to recirculate, and an ozone foaming means for foaming ozone in the form of fine bubbles in the water taken in from the water intake, a bottom surface of the reservoir is a funnel-shaped inclined surface. And a discharge port for discharging water and a mixture of water is formed at the deepest part of the inclined surface of the bottom of the pond, and the discharge port of the reflux means is arranged below the water surface of the reservoir, and the discharge port is formed. The discharge direction is outside the region where the discharge port of the reservoir is formed.

Further, according to the present invention, the recirculation means is intermittently operated so that water is taken in and released at predetermined intervals, if necessary. In the present invention, the ozone supply rate specified by the ratio between the amount of water in the reservoir and the amount of ozone generated to be supplied to the ozone foaming means is set to 0.05 to 0.1 mg / l · h as necessary. It determines the ozone treatment concentration.

Further, according to the present invention, if necessary, ozone injection specified by the ratio of the amount of ozone generated per unit time supplied to the ozone foaming means and the amount of circulating water circulated per unit time by the reflux means. Rate 0.3 to 0.4
The ozone treatment concentration of the reservoir is determined as mg / l.

[0010]

In the present invention, the bottom surface of the reservoir is an inclined surface having a substantially funnel-shaped cross section, a discharge port is formed at the deepest part of this inclined surface, the water in the reservoir is taken in by the recirculation means, and the taken-in water is taken in. Ozone in the form of fine bubbles that is foamed from the ozone foaming means is mixed, and the water mixed with this ozone is discharged from the discharge port of the reflux means disposed below the water surface of the reservoir except the area where the discharge port of the reservoir is formed. Since it is configured to discharge in the direction of, the water quality of the reservoir will be improved by purifying ozone, and the water will be forcibly circulated in the reservoir by the discharge reflux from the outlet below the surface of the water. In addition to improving the purification capacity of the reservoir itself. The purification capacity of the reservoir itself is due to increasing the amount of dissolved oxygen in water by mixing ozone with water in the form of fine bubbles.

Further, in the present invention, by intermittently operating the recirculation means, it is possible to purify the water at predetermined time intervals and also to make the sediment stay near the discharge port of the reservoir when the recirculation means is stopped. This facilitates the work of discharging the precipitate from the discharge port. Further, in the present invention, since the ozone treatment concentration determined by foaming ozone from the ozone foaming means is determined by the ozone supply rate or the ozone injection rate of a specific numerical value, the reservoir can be efficiently used with a very small amount of ozone. Can be purified.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is an overall schematic configuration diagram of this embodiment, and FIG. 2 is a plan configuration diagram of a reservoir in the embodiment apparatus described in FIG. In each of the drawings, the water purification system according to the present embodiment is similar to the prior art described in FIG.
In addition to this configuration, the bottom surface of the reservoir 100 is formed as a substantially funnel-shaped inclined surface 110 and the inclined surface 110 is provided. Outlet 10 at the deepest part of 110
7 is provided, and the filtration channel 11 of the filter 1 is provided.
An ozone foaming device 2 which is disposed inside the screw 4 and is arranged below the screw 4 to foam ozone into a fine bubble state, and ozone is generated by a silent discharge (electrolysis method, other photochemical, various generation mechanism of radiation action) and delivered. This is a configuration including an ozone generator (ozonizer) 3 that supplies the ozone foaming device 2 via a pipe 21.

The filter 1, screw 4, motor 5
The power source 60 takes in the water from the reservoir 100 into the filtration channel 11 via the filter 1, pumps it to the discharge channel 12 by the screw 4, and discharges it from the discharge port 13 to the reservoir 100 for circulation (in FIG. 2). (In the direction of the chain line arrow), and constitutes a reflux means as a whole. The discharge port 13 is a reservoir 100
Is located below the water surface of the water and the outlet 1 of the reservoir 100
It is arranged so as to have a discharge direction other than the direction in which 07 is formed. The discharge direction of the discharge port 13 is
It is also possible to arrange the region where the discharge port 107 of 00 is formed so that the flow velocity of the water circulation is the slowest and the slowest, and it is determined by adjusting the arrangement direction depending on the side wall shape of the reservoir 100, the water depth, and the like.

The power source 60 appropriately selects a battery 6 that outputs a DC voltage, a solar cell 61 that receives sunlight to generate an electromotive force, and a voltage from the battery 6 and a voltage from the solar cell 61. In this configuration, a controller 7 for controlling whether to output both or both, and an inverter 8 for converting a DC voltage output from the controller 7 into an AC voltage. In addition, the ozonizer 3, battery 6, controller 7
The inverter 8 is housed in the separate box 9.

Next, the purifying operation of the apparatus of this embodiment based on the above-mentioned structure will be described. First, when a DC voltage is applied to the inverter 8 under the control of the controller 7, the inverter 8 converts the AC voltage into an AC voltage and outputs the AC voltage to the ozonator 3 and the motor 5. When an AC voltage is applied to the ozonizer 3, the AC voltage is converted into an AC high voltage by a high voltage power supply device (not shown), and the ozonizer body (not shown) is converted.
Apply to. The ozonizer body applies the AC high voltage between two electrodes arranged to face each other, supplies oxygen or air to a gap between the two electrodes, and causes partial discharge (that is, silent discharge) in the gap. Discharge) to generate ozone.

Further, the motor 5 is driven when an AC voltage is applied from the inverter 8 to rotate the screw 4 via the drive shaft 51. The rotation of the screw 4 sucks the water in the reservoir 100 into the filtration channel 11 of the filter 1. Since the suction of water into the filtration channel 11 flows through the filter 1, dust contained in the water is adsorbed and filtered by the brush portion 10.

When the filtered water is sucked into the filtration channel 11 by the rotation of the screw 4, the ozonizer 3
The ozone generated in step 2 is made into a state of fine bubbles of about 200 μm or less by the ozone foaming device 2 and is discharged into the filtered water. Further, the water from which the ozone of the fine air bubbles is released is pushed up to the upper discharge flow path 12 by the rotation of the screw 4 and is stirred to generate a turbulent flow, so that the contact time between the ozone and the water of the fine air bubbles is increased. Therefore, the solubility of ozone is improved and the purification efficiency of water quality improvement is further improved. The water thus efficiently purified is discharged from the discharge port 13 through the discharge flow path 12 to the reservoir 100.
The water in the reservoir 100 is forcibly circulated as a whole due to the discharge pressure when the water is discharged below the water surface 101 and is directly discharged to the lower side of the water surface 101, so that the entire reservoir 100 can be uniformly purified.

Purification of the entire reservoir 100 is performed by the reservoir 1
No. 00 water is oxidized by ozone, and when the ozone is mixed with water, the pollution decomposed by the oxidation is floated on the water surface 101. Therefore, the pollution floated on the water surface 101 is discharged from the floating drain pipe 103 to the drain groove 106. It will be possible to automatically circulate and discharge. In order to circulate and discharge this pollution, it is desirable to adjust the amount of water from the water supply pipe 102 so that the water surface 101 of the reservoir 100 is at the same position as the opening of the floating drain pipe 103. Further, at the bottom of the pond 100, a discharge port 107 connected to the drain pipe 104 is provided,
Water is drained by opening / closing a valve 505 arranged in the middle of the drain pipe 104.

The strong discharge pressure below the water surface 101 causes the water in the reservoir 100 to circulate.
In the vicinity of the discharge port 107 formed in the reservoir 100, the flow velocity of water circulation is gentle due to other regions. After the lapse of a predetermined time of the oxidation by ozone, an agglomerated mixture of seaweed, dust and the like contained in water is precipitated as a precipitate 120, and the precipitate 120 is discharged at a slow flow rate 1
Area 07. In addition, since the discharge port 107 is arranged at the deepest portion of the funnel-shaped inclined surface 110 of the reservoir 100, the funnel-shaped inclined surface is formed so that the aggregated precipitates are sequentially transferred to the deepest portion of the discharge port 107 side and accumulated. Then, the accumulated coagulated sediment is discharged from the outlet 107.
Can be discharged by opening and closing the valve 505.

It is also possible to control the amount of ozone from the ozonizer 3 supplied to the ozone foamer 2 to a value at which the water in the reservoir 100 is most efficient and does not adversely affect the environment of the reservoir 100. As the control of the ozone amount, the ozone supply rate specified by the ratio of the water amount in the reservoir and the ozone generation amount supplied to the ozone foaming means is set to 0.
It is also possible to determine the ozonation concentration of the reservoir as 03 to 0.1 mg.

Further, as the control of the amount of ozone, the amount of ozone generated per unit time supplied to the ozone foaming device and the amount of circulating water circulated by the filtration flow path, the discharge flow path 12 and the discharge port 13 per unit time. It is also possible to determine the ozone treatment concentration of the reservoir 100 by setting the ozone injection rate specified by the ratio of 0.3 to 0.4 mg / l. FIG. 3 shows a characteristic diagram of the degree of ozone fading and the purification ability of this concrete experimental example. In the figure, in the case where the purification efficiency of the reservoir 100 is good and the degree of fading of the goldfish reared in the reservoir 100 is small, the ozone injection rate is optimally 0.03 to 0.4 mg / l centered on 0.33 mg / l. it is conceivable that.

In the experiment in the case of each ozone amount control example, a water amount of 20 t is stored in a reservoir 100 having a water depth of 50 cm, and well water is introduced as well as a loss amount due to natural evaporation / leakage of about 0.2 t / day. It is a semi-closed system that only replenishes (about 1% of the total amount) and inflows of rainwater only. The system was operated continuously at a circulating water flow rate of 80 l / min, and ozone was injected intermittently from 6 o'clock to 18 o'clock (12 h / day). Moreover, in order to confirm the efficiency of this system, operation was stopped twice and the water quality state was quantitatively measured. For ozone injection, the ozone supply rate (ozone generation rate / reservoir water volume) is set to 0.
05 to 0.1 mg / l · h (Ozone generation: 1.6 g
/ H, ozone injection rate 0.3 to 0.4 mg / l).

According to the above experiment, the ozone concentration at the discharge port 13 was 0.25 to 0.30 mg / l with respect to the average injection rate of 0.33 mg / l, showing a high dissolution efficiency. The ozone contact time in the discharge flow path 12 is 6.3 seconds. Outlet 1
The residual ozone concentration at the point farthest from 3 is pH 8.3.
Below 0.01 mg / l, pH 8.5
It could not be detected in the above cases. Further, no adverse effect on carp or goldfish bred in the reservoir 100 since the start of this experiment could be confirmed.

Although the filter 1 having the brush portion is provided in the above embodiment, this filter 1
Alternatively, the water in the reservoir 100 may be directly taken into the filtration channel 11 without the provision of the above. Further, although the screw 4 is provided above the ozone foaming device 2 in the above-described embodiment, the screw 4 may be provided below the ozone foaming device 2 or inside or near the filter 1. .

[0025]

As described above, according to the present invention, the bottom surface of the reservoir is an inclined surface having a substantially funnel-shaped cross section, the discharge port is formed at the deepest part of the inclined surface, and the water in the reservoir is taken in by the reflux means. , The fine water bubbles in the state of being foamed from the ozone foaming means are mixed with the taken-in water, and the water mixed with the ozone is discharged from the outlet of the recirculation means arranged under the water surface of the reservoir to the outlet of the reservoir. Since it is configured to release in a direction other than the region where the water is formed, the water quality of the reservoir is improved by purifying ozone, and it is forced to circulate in the reservoir by the discharge reflux from the discharge port below the water surface. ,
It has the effect of improving the purification capacity of the reservoir itself, in addition to the water quality improvement capacity of ozone. By mixing this ozone with water in the form of fine bubbles, the amount of dissolved oxygen in the water is increased, and the effect of improving the purification capacity of the reservoir itself is produced. Further, in the present invention, by intermittently operating the recirculation means, it is possible to purify water every predetermined time and to retain the precipitate near the discharge port of the reservoir when the recirculation means is stopped, This has the effect of facilitating the work of discharging the precipitate from the discharge port. Further, in the present invention, since the ozone treatment concentration determined by foaming ozone from the ozone foaming means is determined by the ozone supply rate or the ozone injection rate of a specific numerical value, the reservoir can be efficiently used with a very small amount of ozone. It has the effect of being able to purify.

[Brief description of drawings]

FIG. 1 is an overall schematic configuration diagram of a water purification system according to an embodiment of the present invention.

FIG. 2 is a plan configuration diagram of a reservoir in the apparatus of the embodiment shown in FIG.

FIG. 3 is a characteristic diagram of the degree of fading and purification ability of ozone in an experimental example of the present invention.

FIG. 4 is an overall schematic configuration diagram of a conventional water purification device.

[Explanation of symbols]

 1 Filter 2 Ozone Foamer 3 Ozone Generator (Ozonizer) 4 Screw 5 Motor 6 Battery 7 Controller 8 Inverter 9 Separate Box 11 Filtering Flow Path 12 Exhaust Flow Path 13 Discharge Port 20 Foaming Section 51 Drive Shaft 61 Solar Cell 100 Reservoir 101 Water Surface 102 Water Supply Pipe 103 Floating Drainage Pipe 107 Discharge Port 505 Valve

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display location C01B 13/11 K C02F 1/50 510 A 520 B 531 R 540 A 550 B C 560 B 1/78 ZAB // B01D 35/027 (72) Inventor Toshiro Nakamura 6-4-7 Takagise Nishi, Saga City, Saga Prefecture Nakamura Denki Seisakusho Co., Ltd. (72) Masaaki Muto 6-4-7 Takagise Nishi, Saga City, Saga Prefecture Nakamura Electric Co., Ltd. (72) Inventor Nobumasa Matsuo 6-4 Takagise Nishi, Saga City, Saga Prefecture Nakamura Electric Co., Ltd.

Claims (4)

[Claims] 1. A reservoir for storing water to be purified,
A recirculation unit that takes in the water from the water intake port, releases the taken water from the discharge port to the reservoir again to recirculate the water, and an ozone foaming unit that foams ozone in the form of fine bubbles to the water taken in from the water intake port. In a water purification system comprising and, while forming the bottom surface of the reservoir as an inclined surface funnel-shaped cross section, forming a discharge port for discharging a mixture of water and water in the deepest part of the inclined surface of the bottom surface of the reservoir, A water purification system characterized in that the discharge port of the recirculation means is disposed below the water surface of the reservoir, and the discharge port is in a discharge direction other than the region where the discharge port of the reservoir is formed. 2. The water purification system according to claim 1, wherein the recirculation means is an intermittent operation in which water is taken in and released every predetermined time. 3. The water purification system according to claim 1, wherein the ozone supply rate specified by the ratio of the amount of water in the reservoir and the amount of ozone generated supplied to the ozone foaming means is 0.0.
A water purification system characterized in that the ozone treatment concentration of the reservoir is determined as 5 to 0.1 mg / l · h. 4. The water purification system according to claim 1 or 2, wherein the ratio of the amount of ozone generated per unit time supplied to the ozone foaming unit to the amount of circulating water circulated by the reflux unit per unit time. A water purification system characterized in that the ozone treatment concentration of the reservoir is determined by setting the ozone injection rate specified by the above to 0.3 to 0.4 mg / l.