JPH09313820A - Septic tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To feed air into water only when it is required and also to minimize noises. SOLUTION: This septic tank is provided with a filter device 5. Also a dissolved oxygen meter 7 for detecting a dissolved oxygen quantity in the water and an oxygen feed mans 8 for feeding oxygen into the water are provided. A control part for controlling the oxygen feed means 8 so as to feed air into the water when the dissolved oxygen quantity determined with the dissolved oxygen meter 7 becomes less than a specified value, is provided on the device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a purifying device such as a bath water purifying device and a septic tank.

[0002]

2. Description of the Related Art Conventionally, a water absorption section and a water discharge section of a circulation channel are connected to a bath, and a pump, a filtration device using microorganisms, and a heater are provided in the circulation channel so that the bath water in the bath can pass from the water absorption section. There is known a bath water circulation purifying device that sucks in water, filters it with a filtering device, heats it with a heater, and returns it to the bath from a water discharge part. In this bathtub water circulation purifying device of the bathtub, organic substances in the bathtub water are decomposed by microorganisms living on the surface of the filter medium filled in the filtering device to purify the bathtub water of the bathtub, whereby the bathwater is purified over a long period of time. You can take a bath without changing.

[0003]

However, since the microorganisms for purification use oxygen to decompose organic substances in the bath water, if oxygen in the water is insufficient, the purification cannot be performed sufficiently. In addition, a so-called jet jet that mixes air by an ejector action is output to the water discharge nozzle that forms the water discharge part of the circulation flow path to supplement oxygen, and mixes air in the bathtub to supply air to the bath water. However, if this is the case, the jet jet will always be ejected, so the bath water will cool, resulting in an extra electricity bill, which is practical in terms of cost. Moreover, since the jet jet is constantly ejected, noise problems occur.

Further, if the microorganisms excessively increase in the filtration device, the filtration device becomes clogged, the amount of circulating water decreases, and the bath water in the bathtub may not be effectively purified. The present invention is invented in view of the problems of the above-mentioned conventional example, supplying air to water only when necessary,
Noise can be minimized, and when cleaning the bath water, the bath water does not cool, the electricity cost is not too high, and it is possible to quickly detect that the filtration device is clogged due to excessive excess of microorganisms. Therefore, it is an object of the present invention to provide a purifying device that can bring the filtering device into a normal state.

[0005]

In order to solve the problems of the above-mentioned conventional examples and achieve the object of the present invention, the purifying device of the present invention is a purifying device equipped with a filtering device 5 using microorganisms, It is characterized in that a dissolved oxygen meter 7 for detecting the amount of dissolved oxygen is provided. With such a configuration, you can check the amount of dissolved oxygen in water,
For example, when the amount of dissolved oxygen decreases, the purifying ability of the filtration device decreases, so it can be easily determined that oxygen needs to be supplied.

Further, in a purification device equipped with a filtration device 5 using microorganisms, a dissolved oxygen meter 7 for detecting the amount of dissolved oxygen in water and an oxygen supply means 8 for supplying oxygen to water are provided, It may be characterized in that a control unit 9 for controlling the oxygen supply means 8 is provided so as to supply air into the water when the dissolved oxygen amount obtained by the total 7 becomes a certain value or less. . With such a configuration, when the amount of dissolved oxygen in water becomes a certain value or less, this is detected by the dissolved oxygen meter 7 and air is supplied into the water by the oxygen supply means 8, and the microorganisms in the filtration device 5 are detected. It effectively decomposes the organic substances.

Further, the water absorption part 3 and the water discharge part 4 of the circulation flow path 2 are connected to the bathtub 1, and the circulation flow path 2 is provided with a pump 11, a filtration device 5 using microorganisms, and a heater 6, and the water absorption part 3 In the purifying device that sucks the bath water in the bath 1 from the bath and filters it with the filtering device 5 and heats it with the heater 6 and returns it from the water discharge part 4 to the bath 1, the amount of dissolved oxygen in the bath water of the bath 1 is detected. A dissolved oxygen meter 7 for supplying oxygen to the bath water, and an oxygen supply means 8 for supplying oxygen to the bath water are provided. When the dissolved oxygen amount obtained by the dissolved oxygen meter 7 falls below a certain value, oxygen is supplied to the bath water. It may be characterized in that a control section 9 for controlling the supply means 8 is provided. With such a configuration, when the amount of dissolved oxygen in the bath water in the bath 1 becomes a certain value or less, this is detected by the dissolved oxygen meter 7, and the oxygen supply means 8 supplies air into the bath water. The organic substances are effectively decomposed by microorganisms in the filtration device 5.

Further, a cleaning means 10 for cleaning the filtration device 5 is provided, and when the amount of dissolved oxygen falls below a certain value within a certain time after supplying air into the bath water by the oxygen supplying means 8, It is also preferable to provide a control unit 9 for controlling the cleaning device 10 to clean the filtration device 5.
With such a configuration, when the dissolved oxygen amount becomes a predetermined value or less within a certain time after the air is supplied into the bath water by the oxygen supply means 8, a large amount of the air is consumed in a short time. Since it can be determined that the filtration device 5 is clogged due to an excessive increase in the amount of water,
To remove the clogging of the filtration device 5, and thereby to bring the filtration device 5 into a normal state and effectively purify it.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below based on embodiments shown in the accompanying drawings. In the embodiment shown in the accompanying drawings, an example of a purifying device that circulates and purifies bath water in the bathtub 1 will be described as the purifying device. As shown in FIGS. 1 and 2, a water absorption part 3 at one end of the circulation flow path 2 and a water discharge part 4 at the other end of the circulation flow path 2 are connected to the bathtub 1 so as to communicate with each other.

In the circulation flow path 2, a water discharge part 4 is arranged from the water absorption part 3 side.
A pump 11, a filter device 5 filled with a filter medium for filtering using microorganisms, and a heater 6 for keeping warm of the bath water are provided in this order toward the side, and these pipes and members are a purification device. It is stored in the main body A. Here, in the embodiment shown in the drawing, an example in which the heater 6 is arranged on the downstream side of the filtration device 5 is shown, but the heater 6 may be arranged on the upstream side of the filtration device 5.

The circulation channel 2 is further provided with a water channel switching unit 12 for switching a water channel between the pump 11 and the filtering device 5, and further, a switching unit 13 for switching the water channel is provided downstream of the filtering device 5. Is provided, the both water channel switching units 12 and 13 are communicated with each other by a cleaning pipe 14, and the drain pipe 1 is further provided above the filtration device 5.
5 is connected, and the drain pipe 15 is provided with an on-off valve 16.
Then, by operating the pump 11, the bath water in the bathtub 1 is normally pumped from the water absorption part 3 to the pump 11, the water channel switching part 12, the filtering device 5, the water channel switching part 13 as indicated by the arrow shown by the solid line in FIG. 1. While circulating in the order of the heater 6, the water discharger 4, the bath 1
When cleaning the filtration device 5, the filtration device 5 is filtered from the lower part of the filtration device 5 through the water channel switching part 12 and the water channel switching part 13 when the filtration device 5 is washed. The inside of the filtration device 5 is backwashed into the device 5 and drained to the outside from the drain pipe 15. Therefore, the water channel switching units 12 and 13, the cleaning pipe 14, the drain pipe 15 including the opening / closing valve 16 and the like constitute the cleaning means 10 of the filtration device 5.

The circulation channel 2 is further provided with a dissolved oxygen meter 7 called a DO meter for detecting the amount of dissolved oxygen in the bath water flowing in the circulation channel 2. In the embodiment shown in the accompanying drawings, a dissolved oxygen meter 7 is provided on the downstream side of the filtration device 5 so that bath water passes through the filtration device 5 and
The amount of dissolved oxygen after the oxygen in the bath water is consumed by the microorganisms living in the filter medium inside is detected.

The detection data of the amount of dissolved oxygen in the bath water from the dissolved oxygen meter 7 is output to a control unit 9 such as a microcomputer, and when the amount of dissolved oxygen falls below a certain value, the oxygen supply means 8
This allows air to be supplied into the bath water. In the embodiment shown in the accompanying drawings, the water jetting section 4 for jetting the bath water circulated in the circulation flow path 2 into the bathtub 1 is a jet nozzle 4a, and an air pipe 18 is connected to the jet nozzle 4a portion. When jetting the bathtub water into the bathtub 1 from the jet nozzle 4a, air is sucked from the air pipe 18 into the jet nozzle 4a by the ejector effect to mix the air into the bathtub water and return it to the bathtub 1. It is like this. An electromagnetic valve 19 is provided in the air pipe 18 to configure the oxygen supply means 8. When the amount of dissolved oxygen detected by the dissolved oxygen meter 7 becomes a certain value or less, The solenoid valve 19 is opened by a signal, and the solenoid valve 19 is controlled to be closed when the dissolved oxygen amount is a certain value or more.

However, normally, the bath water in the bath 1 flows from the water absorbing part 3 through the pump 11 and the water channel switching part 12 to the filtering device 5, and the microorganisms living in the filter medium filled in the filtering device 5 work. Purifies the bath water by decomposing organic matter by
The purified bath water is kept warm by the heater 6 through the water channel switching unit 12 and returned to the bath 1 from the water discharge unit 4. By circulating and purifying the bath water in the bath 1 in this way, the bath water in the bath 1 is maintained in a state where it can be bathed for a long period of time. In the above circulation purification, the dissolved oxygen meter 7 detects the dissolved oxygen quantity in the bath water, and when the dissolved oxygen quantity in the bath water detected by the dissolved oxygen meter 7 is a certain value or more, the solenoid valve 19 is controlled by the control unit 9. It is controlled to be closed, and thus the circulation purification operation is performed in a state where new air is not supplied to the bath water.

By the way, the microorganisms that purify in the filtration device 5 utilize oxygen to decompose organic substances, so that the oxygen contained in the bath water is consumed, so that the dissolved oxygen in the bath water gradually increases. If the amount decreases and the oxygen in the bath water is insufficient, the purification will not be performed sufficiently and the purification capacity will decrease. Therefore, in the present invention, the dissolved oxygen amount in the bath water is measured by the dissolved oxygen meter 7 and the dissolved oxygen amount is kept at a constant value (for example, 1 pp).
m) or less, the control unit 9 opens the solenoid valve 19,
Air is supplied to the bath water by sucking air from the air pipe 18 by the negative pressure generated in the jet nozzle 4a provided in the water discharge port 4 and ejecting bubbled bath water into the bath water 1, thereby dissolving dissolved oxygen in the bath water. Increase the amount. Here, the solenoid valve 19
The control of the opening time may be performed by a timer, or may be performed until the dissolved oxygen amount measured by the dissolved oxygen meter 7 reaches a certain value or more. In this way, when the amount of dissolved oxygen in the bath water falls below a certain value, air can be automatically supplied into the bath water so that the purification action by the microorganisms in the filtering device 5 can be prevented from decreasing. Further, since the solenoid valve 19 is opened and air is sucked in when oxygen is required, the time during which air is sucked and noise is generated during supply can be extremely shortened. And bathtub water containing air is bathtub 1
Since the time for injecting the water inside is extremely short as described above, it is difficult to cool the water in the bathtub, and as a result, the electricity bill is not additionally charged.

When the dissolved oxygen meter 7 detects that the amount of dissolved oxygen in the bath water is below a certain value, the control unit 9 supplies air from the oxygen supply means 8 as described above. When the amount of dissolved oxygen becomes a certain value or less within a certain time from the time when the air supply by the oxygen supply means 8 is stopped, that is, the time when the electromagnetic valve 19 is closed (the constant value in this case is not necessarily the above electromagnetic Valve 19
Is not necessarily the same as the dissolved oxygen amount for opening
The values may be the same or different), and the controller 9 controls the cleaning device 10 to clean the filtration device 5.

That is, the amount of dissolved oxygen in the bath water falls below a certain value in a short time (within a predetermined time) after sufficient air is supplied into the bath water to reach a certain value or more. That means that a large amount of oxygen was consumed in the filtration device, and if the oxygen consumption is abnormally large, it can be determined that the microorganisms have excessively increased in the filtration device. Then, when the microorganisms are excessively increased in the filter device 5, the filter device is clogged, the amount of circulating water is reduced, and as a result, the bath water cannot be purified effectively. Therefore, as described above, when the amount of dissolved oxygen becomes a certain value or less within a certain time from the time when the supply of air by the oxygen supply means 8 is stopped, the microorganisms in the filtration device 5 excessively increase. In view of this, the control unit 9 controls the cleaning unit 10 to clean the filtration device 5 to eliminate the clogging of the filtration device 5. In the embodiment shown in the accompanying drawings, the water channels of the water channel switching units 12 and 13 are switched to the cleaning side by a signal from the control unit 9 and the opening / closing valve 16 is opened, so that the bath water sucked from the water inlet 1 is switched to the water channel switching unit 12 → By flowing through the flow path of the water channel switching unit 13 → the lower part of the filtering device 5 → the upper part of the filtering device 5 → the drain pipe 15, the filtering device 5 is washed in the reverse direction from the lower part to the upper part (so-called reverse cleaning). .

In the above embodiment, the dissolved oxygen meter 7 detects the dissolved oxygen in the bath water, and the controller 9 controls the oxygen supply means 8 based on the detected signal to automatically supply the air. Alternatively, the control unit 9 controls the cleaning means 10 to automatically clean the filtration device 5. However, the dissolved oxygen meter 7 detects only the dissolved oxygen amount in the bath water, and the value is below a certain value. Then, it may be displayed by various display means such as sound, light, characters, etc. In this case, based on the display, the oxygen supply means 8 is manually operated to supply air or manually. The filtering means 5 may be washed by operating the washing means 10.

In each of the above embodiments, the purifying device for circulating and purifying the bath water of the bath 1 has been described, but it goes without saying that the present invention can be applied to a waste water purifying device. In the case of a waste water purification device, air is preferably supplied upstream of the filtration device 5.

[0020]

According to the first aspect of the present invention, as described above, a dissolved oxygen meter for detecting the amount of dissolved oxygen in water in a purification device equipped with a filtration device using microorganisms. Since it is provided, the amount of dissolved oxygen in water can be checked by a dissolved oxygen meter, the fluctuation of the purification capacity of the filtration device can be checked, and whether or not oxygen needs to be supplied can be easily determined.

[0021] According to the second aspect of the invention, in a purification device equipped with a filtration device using microorganisms, a dissolved oxygen meter for detecting the amount of dissolved oxygen in water and oxygen is supplied to the water. Since the oxygen supply means is provided and a control unit for controlling the oxygen supply means is provided so as to supply the air into the water when the dissolved oxygen amount obtained by the dissolved oxygen meter becomes a certain value or less, the dissolved oxygen in the water is provided. When the amount becomes a certain value or less, it is detected by a dissolved oxygen meter, and air is supplied into the water by the oxygen supply means to effectively decompose organic substances by microorganisms in the filtration device.

Further, in the invention according to claim 3, the water absorption part and the water discharge part of the circulation channel are connected to the bath, and the circulation channel is provided with a pump, a filtration device using microorganisms, and a heater. To detect the amount of dissolved oxygen in the bathtub water in the bathtub in a bathtub water circulation purification device that sucks the bathwater in the bathtub from the water absorption part, filters it with a filter device, heats it with a heater, and returns it to the bathtub from the water discharge part Is provided with an oxygen supply means for supplying oxygen to the bath water, and the oxygen supply means is controlled so as to supply air into the bath water when the dissolved oxygen amount obtained by the dissolved oxygen meter falls below a certain value. Since a control unit for this is provided, when the amount of dissolved oxygen in the bath water in the bath falls below a certain value, this is detected by the dissolved oxygen meter, and air is supplied into the bath water by the oxygen supply means for filtration. Due to microorganisms in the device Compared to the case where the air can be decomposed effectively and the oxygen is supplied to the bathtub, the air is constantly sucked in and supplied to the bathtub when the bathwater is being spouted from the spout of the circulation channel. The bath water is difficult to cool, the cost of electricity bill can be reduced, and the noise generation time when supplying air can be extremely reduced.

Further, in the invention described in claim 4, in addition to the effect of the invention described in claim 2 or claim 3, a cleaning means for cleaning the filtration device is provided, and the bath is provided by the oxygen supply means. Since the control unit is provided to control the cleaning device to wash the filtering device when the amount of dissolved oxygen falls below a certain value within a certain time after supplying air into the water, Even if the microorganisms are clogged up due to excessive increase in the above, it is possible to easily estimate this by detecting the amount of dissolved oxygen consumed and wash the filtering device with the cleaning means to clear the clogging of the filtering device. However, this makes it possible to bring the filtration device into a normal state and perform effective purification.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of the present invention.

FIG. 2 is a schematic front view showing the bathtub and the purification device of the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bath 2 Circulation flow path 3 Water absorption part 4 Water discharge part 5 Filtration device 6 Heater 7 Dissolved oxygen meter 8 Oxygen supply means 9 Control part 10 Cleaning means 11 Pump

Claims (4)

[Claims] 1. A purification device equipped with a filtration device using microorganisms, which comprises a dissolved oxygen meter for detecting the amount of dissolved oxygen in water. 2. A purification device equipped with a filtration device using microorganisms, which is provided with a dissolved oxygen meter for detecting the amount of dissolved oxygen in water and an oxygen supply means for supplying oxygen to water, and is obtained by the dissolved oxygen meter. A purifying apparatus comprising a control unit for controlling the oxygen supply means so as to supply air into water when the amount of dissolved oxygen falls below a certain value. 3. A water absorbing part and a water discharging part of the circulation flow path are connected to the bathtub, and a pump, a filtering device using microorganisms, and a heater are provided in the circulation flow path to suck the bath water in the bathtub from the water absorption part. In a purification device that filters with a filtering device and heats it with a heater and returns it from the water discharge part to the bath, a dissolved oxygen meter for detecting the amount of dissolved oxygen in the bath water in the bath and supplying oxygen to the bath water. An oxygen supply unit is provided, and a control unit is provided for controlling the oxygen supply unit so as to supply air into the bath water when the dissolved oxygen amount obtained by the dissolved oxygen meter becomes a certain value or less. Purification device. 4. A cleaning device provided with a cleaning means for cleaning the filtration device, and when the dissolved oxygen amount becomes a predetermined value or less within a predetermined time after supplying air to the water by the oxygen supply device, the filtration device is operated by the cleaning means. The purification device according to claim 2 or 3, further comprising a control unit for controlling so as to wash the.