JP2560957B2 - Bathtub water purification equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath water purifying apparatus suitable for purifying bath water in a general household.

[0002]

2. Description of the Related Art In a conventional purifying apparatus for purifying bathtub water and the like by utilizing microbial activity, the bathwater in the bathtub is sent by a circulation pump to a filter provided in a circulation channel to remove hair, dirt, suspended matter, etc. After removal, it passes through a biological treatment tank to remove soluble organic pollutants contained in the bath water, and the bath water purified here is returned to the bath to constitute a circulation system.

[0003]

However, in the above-mentioned conventional purification apparatus, when the time period during which the bath is not performed extends for a long time, or the purification apparatus is not operated for a long period of time, the biological treatment tank is used. The air (oxygen) supply to the inside is cut off, and anaerobic microorganisms propagate in the same tank, producing organic acids and amines and generating an offensive odor, as well as contributing to the original purifying action. The activity of microorganisms is inhibited and the purification function is lost.

For this reason, continuous feeding of air or oxygen-containing water into the biological treatment tank is a condition for maintaining the purifying function, and the purifying device must be operated all the time. Therefore, there is a problem in that the cleaning effect of the bath water is destroyed due to noise, power costs, wear of equipment parts, and the like.

The present invention relates to maintaining the activity of aerobic microorganisms living in a biological treatment tank, and by solving the problems that the above-mentioned conventional techniques have, an effective apparatus for purifying bath water is provided. It is provided.

[0006]

In order to achieve the above-mentioned object, in the bath water purifying apparatus of the present invention, a filter and a biological treatment tank are provided in this order in the circulation channel of the bath water provided with a circulation pump. In the provided bath water purification device, the circulation of the biological treatment tank
Biological treatment tank upstream and upstream of the ring waterway
Interposed waterways switching valve for switching, during cleaning operation stop stopping the circulation pump, feeding the water passage switching valve
It is configured to switch to the air passage side, form a drainage channel in the biological treatment tank, and activate the air supply means to the biological treatment tank, which is arranged in communication with the air supply passage .

Further, in the second bath water purifying apparatus of the present invention, when the purifying operation for stopping the circulation pump is stopped, the water channel switching valve is switched to the air supply passage side.
In addition, a drainage channel in the biological treatment tank is formed , and a heating means for heating the inside of the biological treatment tank is operated.

Further, in the third bath water purifying apparatus of the present invention, a filter and a biological treatment tank are provided in this order in the bath water circulation passage having a circulation pump, and the biological treatment tank is provided with the circulation passage. When the purification operation is stopped by connecting a backwash passage to the biological treatment tank to stop the circulation pump, the drainage passage in the biological treatment tank is formed and the biological treatment tank is heated by heating means or into the biological treatment tank. When the cleaning operation is restarted, a backwash operation of the biological treatment tank is performed and then the cleaning operation is performed.

[0009]

As described above, in the bath water purifying apparatus of the present invention,
When the circulation pump is shut down, the air supply passage and biological treatment tank
And the inside of the biological treatment tank is drained and the air supply passage is
Even if air is sent into the biological treatment tank and the entire area of the biological treatment tank is in a state of deaeration, and even if the operation of the purification device is stopped for a long time,
The habitat conditions for aerobic microorganisms are guaranteed, and the activity of the microorganisms will immediately function when the operation is resumed.

In the second bath water purifying apparatus of the present invention, the air supply passage communicates with the biological treatment tank when the purifying operation is stopped.
And since it warms after discharging the bath water in the biological treatment tank, the air is circulated from the drainage channel to the air supply passage in the same tank, which brings about the effect of suppressing the growth of various bacteria in the microbial epithelial carrier, Even if the purifier is out of service for a long time,
The aerobic microbial habitat is guaranteed and the microbial death is prevented.

Further, in the above-described first or second bath water purifying apparatus of the present invention, drying of the inside of the biological treatment tank during the suspension of the cleaning operation causes a microorganism decomposition residue or a microbial carrier to enter the biological treatment tank. The microbial exfoliated carcasses of No. 1 are generated, and when these restart the purifying operation, they usually flow into the bathtub. In the third bath water purifying apparatus of the present invention, the restarting of the purifying operation is performed. By backwashing the inside of the biological treatment tank prior to the start, the contaminants are removed in advance, and clear purification bath water is returned to the bath.

[0012]

1 is a schematic view showing an embodiment of a bath water purifying apparatus of the present invention. The bath water in the bath 1 is sent to the filter 2 by driving the circulation pump 4 to remove suspended matters in the bath water, and then sent to the biological treatment tank 6 through the circulation water channel 3 and the water channel switching valve 5. This is an example of the configuration of a circulation system in which an organic pollutant contained in bathtub water is decomposed and removed by microbial activity and then returned to the bathtub 1 via the waterway switching valve 7, and the bathwater to be purified is shown. The paths are indicated by solid arrows.

In the purifying apparatus of the present invention having the above circulation system, in order to reduce the load on the filter 2 by removing in advance relatively coarse suspended matters such as hair and dirt aggregates in the bath water, A hair catcher 8 is detachably attached to the opening of the circulating water channel 3 in the filter 1, and the filter 2 is filled with a filter material such as non-woven fabric or synthetic resin foam glass beads composed of open cells.

On the other hand, as a method for filling the aerobic microbial growth carrier 9 in the biological treatment tank 6, a fixed bed method in which a metal net, a plastic honeycomb or the like is fixedly installed may be used, or anthracite, barley stone, etc. A fluidized bed system in which the particles are dispersed in the tank may be used, and when the biological treatment tank 6 is ventilated by the means described later, it does not hinder the air supply into the biological treatment tank 6.

As means for forming a drainage channel for bath water in the biological treatment tank 6 in cooperation with the operation stop of the circulation pump 4,
The passage switching from the circulation water passage 3 to the air supply passage 10 side by switching the water passage switching valve 5 and the passage switching from the circulation water passage 3 to the discharge water passage 11 side by switching the water passage switching valve 7 are performed. The means for feeding air into the biological treatment tank 6 that operates by the above is composed of the compressor 16 that is activated when the water channel switching valve 5 is switched and is connected to the air feeding passage 10.

By switching the respective switching valves and driving the compressor 16, air is introduced into the biological treatment tank 6 via the air supply passage 10 and the water passage switching valve 5, and at the same time, the water passage switching valve 7 and the exhaust air are discharged. The bath water in the biological treatment tank 6 is discharged through the water channel 11, the inside of the tank 6 is ventilated, and air is fed. As the bath water drainage passage in the biological treatment tank 6, the water passage switching valve 7 can be switched to the circulating water passage 3 side, the water can be passed through the bath 1, and the water can be discharged from the drain plug 23 provided at the lower portion of the bath.

Immediately after draining the bath water, continuous air feeding is desirable to accelerate the drying of the microorganism-bearing carrier 9. However, when the operation of the purifying device is stopped for a long time, for example, several hours are required. It is sufficient to set up an intermittent time zone mode in which air is supplied for 1 to 2 minutes each time. As an air feeding means, in addition to the use of a compressor, an air cylinder, an oxygen cylinder, etc.
A combination means of a gas supply device and an automatic opening / closing valve can also be applied.

FIG. 2 is a schematic view showing an embodiment of a second bath water purifying apparatus of the present invention. The difference from the configuration of FIG. 1 is that the air supply passage 10 is connected to a compressor instead of the compressor. A heating means 17 such as a ring-shaped or plate-shaped metal clothing resistance heating element or a ceramic resistance heating element on the outer wall of the tank.
The other configurations are the same in that they are attached. In addition, the heating means 17 is intermittently operated in cooperation with the water level detecting means 18 in the tank provided in the opening of the circulating water channel 3, and the temperature in the tank attached to the biological treatment tank 6 is also increased. Detection means 1
9 and the control circuit attached separately controls the temperature.

The heating temperature in the biological treatment tank 6 is 40 to 45.
Desirably, the heating time is set at 0 ° C., and the heating time is appropriately determined according to the capacity of the tank, the type of bio-engraftment carrier and structural difficulty of drying, the state of the outside air, etc.
To avoid overdrying. In the water level detection means 18,
An element such as a thermistor or an IC sensor is applied to the temperature detecting means 19 by applying float, electrostatic capacity, ultrasonic capacity or the like.

In this structure, when the circulation pump 4 is stopped, the water channel switching valves 5 and 7 are switched, and the water channel switching valve 5 is switched so that the biological treatment tank 6 communicates with the air supply passage 10 to switch the water channel. By switching the valve 7, the inside of the biological treatment tank 6 communicates with the discharge water channel 11. Due to this switching, the inside of the biological treatment tank 6 is drained, and as a result of intermittent heating of the inside of the biological treatment tank 6 by the heating means 17, convection occurs in the biological treatment tank 6 and air is intermittently generated. Since the cells are exchanged, the inside of the biological treatment tank 6 is in an aerated state.

FIG. 3 is a schematic view of an embodiment showing a third bath water purifying apparatus of the present invention. In the discharge water channel 11 of the biological treatment tank 6 of the second bath water purifying apparatus of the present invention described above. The backwash water channel 21 branched from the circulation water channel upstream of the water channel switching valve 5 is connected via the water channel switching valve 12 so that the biological treatment tank 6 can be backwashed. In such a configuration, when the cleaning operation is started, first, the backwash operation of the biological treatment tank 6 is performed for a required time, and then the cleaning operation is performed.

According to the above construction, when the purifying operation is stopped and the circulation pump 4 is stopped, the water channel switching valve 5,
7 and 12 are switched and the water channel switching valve 5 is switched, so that the residual water in the biological treatment tank 6 remains in the water channel switching valve 7, the discharge water channel 11, the water channel switching valve 12, and the discharge water channel 1.
3, the heating means 17 is intermittently operated to generate convection in the biological treatment tank 6 so that air flows into and out of the biological treatment tank 6 to perform biological treatment. The tank 6 is aerated.

When the cleaning operation is started, the water passage switching valve 12 is first switched so that the backwash water passage 21 communicates with the discharge water passage 11, and at the same time, the circulation pump 4 is driven. By this operation, the bath water flows in the reverse direction in the biological treatment tank 6 through the backwash water channel 21, the water channel switching valve 12, the discharge water channel 11, and the water channel switching valve 7 to clean the biological treatment tank 6. By such cleaning, the microbial decomposition residue and the microbial exfoliated carcass separated from the biofilm that is dried by the above-mentioned aeration are discharged to the outside through the water passage switching valve 5 and the air supply passage 10 together with the cleaning water.

When this backwashing operation is performed for a required time, the water channel switching valves 5 and 7 are switched, the biological treatment tank 6 is communicated with the circulating water channel 3, and the purification operation is performed. When the bath water purifying apparatus according to the present invention is implemented, it is easy to control the load of each water channel switching valve, the circulation pump 4, the air feeding means 16, the heating means 17, etc. by using the microcomputer 24. Yes, for example, in the embodiment of FIG. 1, the signal of the operation key for stopping the cleaning operation is the microcomputer 2
4 is stopped, the drive circuit of the circulation pump 4 is stopped, and when the stop of the circulation pump 4 is detected by a circulation flow detection path (not shown) provided in the circulation water path 3, the water path switching valves 5, 7 When the signal of the operation key for restarting the cleaning operation is input to the microcomputer 24, the drive circuit of the air supply means 16 is stopped and the water channel switching valve 5 is operated. , 7 are switched again to operate the drive circuit of the circulation pump 4.

[0025]

As described above, in the bath water purifying apparatus of the present invention, when the operation of the apparatus is stopped, the waste water in the biological treatment tank and the air in the same tank are introduced, and the waste water in the same tank is discharged. In addition, the circulation of air by heating in the tank prevents the growth of anaerobic microorganisms and harmful harmful bacteria in the tank, maintains the activity of aerobic microorganisms that live, and immediately restarts the bath when the operation resumes. Water can be purified. Further, even if the air is introduced into the biological treatment tank intermittently, the aeration effect in the same tank can be maintained, so the power cost is significantly reduced. Furthermore, since the inside of the biological treatment tank is backwashed in advance when the purification device is restarted,
No filth from the inside of the tank will flow into the bath.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of a first bath water purifying device of the present invention.

FIG. 2 is a schematic view showing an embodiment of a second bath water purifying device of the present invention.

FIG. 3 is a schematic view showing an embodiment of a third bath water purifying device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bathtub 2 Filter 3 Circulating water channel 4 Circulating pump 5 Water channel switching valve 6 Biological treatment tank 7 Water channel switching valve 8 Hair catcher 10 Air supply passage 11 Exhaust water channel 12 Water channel switching valve 13 Exhaust water channel 16 Air supply means 17 Heating means

Claims (3)

(57) [Claims] 1. In a bath water purifying device in which a filtration tank and a biological treatment tank are provided in this order in a circulation channel of bath water having a circulation pump, organisms are provided upstream of the circulation channel of the biological treatment tank.
Channel switching to switch the treatment tank between circulation channel and air supply channel
The water passage switching valve is switched to the air supply passage side when the purifying operation for stopping the circulation pump is stopped by interposing an elongate valve.
Forming a drainage channel of the biological treatment tank with, and the air supply passage
A device for purifying bath water, which is characterized in that air supply means for communicating with the biological treatment tank is operated. 2. In a bath water purifying device in which a filtration tank and a biological treatment tank are provided in this order in a circulating water passage of bath water having a circulation pump, organisms are provided upstream of the circulating water passage of the biological treatment tank.
Channel switching to switch the treatment tank between circulation channel and air supply channel
The water passage switching valve is switched to the air supply passage side when the purifying operation for stopping the circulation pump is stopped by interposing an elongate valve.
At the same time , a bath water purifying device is characterized in that a drainage channel in the biological treatment tank is formed and a heating means for heating the biological treatment tank is operated. 3. The biological treatment tank is connected to a circulating water channel with a backwash passage, and when the purification operation is restarted after the purification operation is stopped, the backwash operation of the biological treatment tank is executed and then the purification operation is performed. The bath water purifying apparatus according to claim 1 or 2.