JPH04200689A - Water treating system - Google Patents

Abstract

PURPOSE:To effectively sterilize the city water and to decrease the amt. of ozone and the amt. of chlorine to permissible amts. or below by mounting an ozone sterilizing device and a deozonizing and dechlorinating device for removing the residual ozone and residual chlorine in the city water after the sterilization treatment, branching a reflux piping from the upstream side or downstream side thereof and connecting the terminal thereof to the sterilizing device. CONSTITUTION:The sterilizing device B and the deozonizing and dechlorinating device F are mounted from the upstream side toward downstream side in a water flow channel and, further, the reflux piping 30 is branched from the upstream side or downstream side of this deozonizing and dechlorinating device F. The terminal of this reflux piping 30 is connected to the sterilizing device B. Bacteria, etc., are effectively sterilized by circulating the water in the circulating flow passage having the sterilizing device and the electrolytic dechlorinating and deozonizing device, by which the ozone and chlorine are decreased to the permissible amts. or below if the chlorine and ozone remain to the permissible amts. safe to the human body or above in the city water W. The safety of the city water W is thereby assured in this way and the chlorine smell and ozone smell are surely removed.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a water treatment system that can produce delicious and safe water without any unusual odor or taste.

(b) Prior art In recent years, due to the rapid pollution of rivers, etc., tap water taken from these rivers, etc. has also become sufficiently contaminated.

Therefore, a wide variety of water treatments are applied to such tap water, such as sterilizing it by adding large amounts of chlorine and filtering it with activated carbon, to produce water that is drinkable and has its odor reduced to a certain extent. .

On the other hand, some systems have focused on the sterilizing effect of ozone and have installed an ozone sterilizer in the middle of the tap water supply pipe.

(C) Problems to be Solved by the Invention However, such prior art still has the following problems to be solved.

In other words, in the above-mentioned treatment of tap water with chlorine and ozone, the degree of contamination of the tap water changes depending on the time of day and region, so in some cases, more chlorine than is necessary is added to the tap water or ozone is generated. There is a risk that it may cause

In this case, problems arise such as the smell of chlorine hitting the nose and the effects of ozone on the human body.

An object of the present invention is to provide a water treatment system that can solve the above problems.

(d) Means for Solving the Problems The present invention provides a means for solving the problems in a waterway, in order from the upstream side to the downstream side.
We installed an ozone sterilization device that sterilizes tap water using ozone, and a deozonation/dechlorination device that removes residual ozone and residual chlorine from tap water after sterilization treatment.
Branch the reflux piping from the upstream or downstream side of the dechlorination equipment,
The present invention relates to a water treatment system characterized in that the end of the reflux pipe is connected to an ozone sterilizer.

The present invention is also characterized in that an electrolytic dechlorination/deozonation device is used as the deozonation/dechlorination device.

(E) Function/Effect The water treatment system according to the present invention can effectively sterilize tap water using an ozone sterilizer, and
Even if the tap water after sterilization treatment still contains ozone and chlorine in excess of the permissible amount for the human body, the amount of ozone and chlorine can be effectively reduced to below the permissible amount by the deozonation/dechlorination device.

In addition, by circulating a circulation channel equipped with an ozone sterilization device and an electrolytic dechlorination/deozonation device, a large amount of bacteria, etc. can accumulate in the water channel and the accumulated water in the circulation channel during long periods of non-use. By repeating the circulation of the treated water before discharging the water into the tank, etc., it is possible to effectively sterilize bacteria, etc., and then supply water to the tank, etc., as well as prevent cancer-causing bacteria. Safety can be ensured by reliably decomposing and removing various compounds whose properties are considered problematic, such as trihalomethane.

(f) Examples The present invention will be specifically described below based on examples shown in the attached drawings.

FIG. 1 shows a configuration B in which a water treatment system A according to the present invention is installed side by side on one side of a sink 9 as part of a system SK.

Further, FIG. 2 conceptually shows the overall configuration of the water treatment system A.

As shown in the figure, tap water W (see FIG. 3) is first supplied to an ozone sterilizer B, and the ozone sterilizer B sterilizes the tap water W.

The tap water W sterilized by the ozone sterilizer B is supplied to the chiller C through the downstream piping 20 and cooled to a desired temperature.

A portion of the tap water W is returned to the ozone sterilizer B through a partial return pipe 30 that includes a mineral addition device and a cluster treatment device E.

After that, the tap water W is cooled to an appropriate temperature by the chiller C.
will be fed to Curran 8, etc., which will be described later, through electrolytic dechlorination and deozonation equipment F.

Further, a bypass pipe 37 is provided in parallel to the downstream pipe 20 to which the chilled water device C is attached, and a hot water device G is attached to the bypass pipe 37.

Further, a part or all of the tap water W treated by the electrolytic dechlorination/deozonation device F is returned to the ozone sterilization device B through the reflux pipe 44.

Here, part or all of the tap water W before being treated by the electrolytic dechlorination/deozonation device F is returned to the ozone sterilization device B from the middle of the pipe 20 through a return pipe (not shown).

Moreover, since the water treatment system A according to this embodiment has the above-described configuration, each device can be compactly packed and stored in the cabinet of the sink 9. Furthermore, a photoelectric sensor detects the presence of a human body,
It is also possible to incorporate the water treatment system A according to the present invention into a faucet that opens and closes a magnetic valve based on the sensing signal to discharge water.

Hereinafter, the configuration and function of each component will be explained in detail with reference to FIGS. 3 to 9.

As shown in FIG. 3, the lower end opening of a vertical water supply vibrator 11 whose upper end is connected to an elevated water tank in a building or the like is connected to the upper wall 10a of the sterilization treatment tank 10 that constitutes the main part of the ozone sterilizer B. ing.

On the other hand, one end of an ozone supply pipe 13 is connected to an ozone jet nozzle 12 provided on the bottom wall 10b of the sterilization treatment tank 10, and the other end of the ozone supply pipe 13 is connected to an air supply fan 1.
The ozone generator 15 is connected to an ozone generator 15 equipped with a

With this configuration, by operating the ozone generator 15 and the air supply fan 14, the sterilization process 1'! is carried out from the elevated water tank! Ozone can be ejected into the tap water W supplied and stored in the tank 10 through the ozone supply pipe 13 and the ozone jet nozzle 12, and the tap water W can be effectively sterilized.

In particular, since ozone sterilizer B uses ozone to sterilize, it can: ■ reliably sterilize bacteria and viruses; , 2) It suppresses the oxidation of iron and manganese to prevent the formation of scale, and 2) it can decompose and reduce various organic compounds whose carcinogenicity is considered a problem, such as trihalomethane precursors.

In this embodiment, a deozonization catalyst 16 for absorbing excess ozone is attached to the upper wall 10a of the sterilization treatment tank 10 to prevent ozone from being released into the outside air.

Further, in this embodiment, an upper limit float 17 and a lower limit float 18 are installed in the sterilization treatment tank 10 in order to always maintain a constant amount of tap water W in the sterilization treatment tank 10. As shown in FIG. 10, the output signal causes the vertical water supply vibrator 11 to be activated via the control device CPU.
By opening and closing a solenoid valve 19 installed midway, the flow rate of tap water W supplied from the elevated water tank to the sterilization treatment tank 10 can be adjusted.

Furthermore, in this embodiment, the lower end opening 11a of the vertical water supply vibrator 11 is located above the water surface of the tap water W in the sterilization treatment tank 10, and the sterilization treatment tank 10 is provided with an overflow port (not shown). Therefore, it is possible to reliably prevent bacteria and the like from flowing back into the elevated water tank from the sterilization treatment tank 10 through the vertical water supply vibrator 11.

Next, to explain the configuration of the downstream side of the ozone sterilizer B described above, as shown in FIG. is installed.

A part of the reflux piping 30 branches off from a point immediately downstream of the pressurized circulation pump P;
The end opening 30a of the sterilization tank 10 faces the inside of the sterilization treatment tank 10, and a mineral addition device and a cluster treatment device E are installed partially in the middle of the reflux pipe 30.

As shown in FIG. 4, the mineral addition device consists of a ceramic plate 34 sintered with mineral components and a platinum electrode 35 in a processing tank 33 that is partially provided in the middle of a reflux pipe 30.
and by connecting both to iii ill 36.

With this configuration, it is possible to promote the elution of various mineral components from the ceramic plate 34, such as Ca"° + Na" + K=, into the tap water W, and it is possible to make the tap water W even more delicious. can.

Furthermore, by circulating the tap water W in an electronic field using the cluster treatment device E, as shown in FIG. 5, water molecules can be activated and delicious water with small clusters can be obtained.

Such mineral-added and cluster-treated tap water W
is then supplied to the chiller C.

That is, the downstream piping 20 whose upstream side is connected to the mineral addition device and the cluster processing device E has the chilled water device C and the solenoid valve 22 attached to its downstream side.

With this configuration, sterilization is performed in the sterilization treatment tank 10,
In addition, the tap water W that has been processed into delicious tap water W by the mineral addition device and the cluster treatment device E is fed to the chiller C by the pressurized circulation pump P and cooled to an appropriate temperature, thereby producing even more delicious water. Thereafter, it can be fed to the column 8 shown in FIG. 1 through the downstream piping 20.

In particular, this embodiment is characterized in that the chilled water device C is configured using a Beltier element 23.

That is, as shown in FIGS. 6 and 7, the chilled water device C:
A Beltier element 23 is attached to the outer wall surface 25 of a vertically long metal storage tank 24, and the Beltier element 23 is
It is comprised of a pair of P-type semiconductors 2G and N-type semiconductors 27 connected to the outer wall surface 25, a power source 28 electrically connected to both-handed conductors 26 and 27, and heat radiation fins 29.

With this configuration, heat can be taken from the metal storage tank 24 to the Beltier element 23 by utilizing the Peltier effect, and the storage tank 24 and the tap water W flowing in the tank 24 can be cooled.

In this way, in this embodiment, since the water chiller C is formed by the Beltier element 23, there is no noise, vibration, or wear, and the water chiller 21 can be made smaller and can be easily installed in the necessary location in a general household. ■Maintenance is easy because there is no need to worry about leakage of refrigerant, and ■Two-handed conductor 26.2
By controlling the current value applied to 7 by the CPU, highly accurate cooling temperature control is possible.

Further, as shown in FIG. 3, in this embodiment, two bypass pipes 37 and 38 are provided in parallel to the downstream pipe 20 equipped with the chilled water device C, and the bypass pipe 37 has a hot water bag [G and an electromagnetic bag]. Another feature is that the valve 40 is attached and only the solenoid valve 41 is attached to the bypass piping 38.

With this configuration, by selectively opening and closing the solenoid valves 22, 40, 41 as appropriate via the control device CPU,
Not only can tap water W that has been cooled to an appropriate temperature be produced, but also tap water W that has been heated to an appropriate temperature and tap water W that has not been temperature-treated can be obtained.

Further, in this embodiment, as shown in FIG. 3, the downstream piping 2
0, the configuration is also characterized in that the electrolytic dechlorination/deozonation device F and the electromagnetic valve 43 are provided at the downstream side of the chilled water device C.

The structure of such an electrolytic dechlorination/deozonation apparatus F is conceptually shown in FIG.

As shown in the figure, this electrolytic dechlorination/deozonation apparatus F has a large number of porous graphite plates 51 stacked in an electrolytic cell 50, and direct current flows through the anode and cathode power feeders 52 and 53 installed at both ends of the electrolytic cell 50. By applying a voltage, a polarization phenomenon occurs in which 51a becomes an anode and 51b becomes a cathode on the upper and lower sides of the porous graphite plate 51, and a large number of electrolytic units can be generated in the electrolytic cell 50.

With this configuration, the following reduction reaction (1) regarding chlorine can be caused at the cathode to render chlorine harmless.

CIO-+ 2H-+2e-→H,O+ CI-(1
) Furthermore, the following reactions (2) and (3) can occur at the anode 51a to effectively decompose residual ozone.

0□→0□+0° (2) o”+o”→Oz (3) Here, 0" represents activated oxygen.

In this way, if chlorine or ozone remains in the tap water W discharged from the tap water W discharged from the Karan 8 etc. shown in Figure 2 in an amount exceeding the human body safety tolerance, ozone is removed and the tolerance level is reduced. The safety of tap water W can be ensured, and chlorine and ozone odors can also be reliably removed.

In addition, as shown in FIG. 9, since the bacteria V is negatively charged (-), it comes into contact with the anode 51a of the porous graphite plate 51, but at this time, the bacteria G converts coenzymes that contribute to metabolism. It will lose its electrons and die. That is, electrolytic sterilization can be performed.

Furthermore, in this embodiment, as shown in FIG.
A reflux pipe 44 is branched from a point immediately downstream of the reflux pipe 44, and a terminal opening 44a of the reflux pipe 44 faces into the sterilization treatment tank 30, and a solenoid valve 45 is installed in the middle of the reflux pipe 44.
is installed.

With this configuration, by closing the solenoid valve 43 and opening the solenoid valve 45, if the ozone concentration is still excessive even after treatment by the electrolytic dechlorination/deozonation device F, the entire amount of tap water W is removed. It can be refluxed to the sterilization treatment tank 10 through the reflux piping 44 .

Then, by circulating the circulation channel equipped with the ozone sterilization device B and the deozonation/dechlorination device F a necessary number of times, the residual ozone amount and residual chlorine amount in the tap water are further reduced, and the tap water W is Safety can be further ensured.

Further, various compounds whose carcinogenicity is considered a problem, such as trihalomethane, can be reliably decomposed and removed by repeated treatment in the above-mentioned circulation channel.

Furthermore, by circulating the circulation channel equipped with the ozone sterilization device B and the electrolytic dechlorination/deozonation device F,
Even if there is a large amount of bacteria, etc. in the accumulated water in the circulation channel during a long period of non-use, by repeating the circulation of the treated water before discharging the water into the drain, the bacteria, etc. can be effectively removed. After that, the water can be sterilized and then supplied to the water tank, etc., and safety can be ensured in this aspect as well.

Next, the control circuit configuration of the water treatment system A according to this embodiment will be explained with reference to FIGS. 3 and 10.

As shown in FIG. 3, a tap water component analyzer S is installed at a location upstream of the pressurized circulation pump P in the downstream piping 20, and analyzes the components of the tap water W. Data can be sent to the control unit CPU.

In addition, the chilled water device C and the hot water device G include a temperature sensor St that measures the temperature of the tap water W flowing inside each.
Ss is installed, and the measured temperature value is sent to the control device CP.
You can send it to IJ.

Furthermore, the electrolytic dechlorination/deozonation device F of the downstream piping 20
A residual ozone measurement sensor S4 and a residual chlorine sensor S are installed at a location on the downstream side of can be detected and the detected value can be sent to the control device CPU.

Further, as shown in FIG. 10, the above-mentioned sensor group S l
-S s and the upper and lower flow limits H7 and 1B arranged in the sterilization treatment tank 10 are connected to the input side interface a of the control device CPU, and the output side interface b of the control device CPU is connected to an air supply fan. 14° Ozone generator 15. Pressurized circulation pump P, mineral addition device, cluster treatment device E, chilled water device C9, hot water device G, electrolytic dechlorination/deozonation device F, and various other solenoid valves 19, 22, 4
1, 40, 43, 45 are connected.

By driving various devices connected to the output interface b based on the sensor output input through the input interface a, delicious water can be automatically produced.

In addition, in FIG. 10, C indicates a memory.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a system kitchen incorporating the water treatment system according to the present invention, Fig. 2 is a conceptual diagram illustrating the configuration of the water treatment system, and Fig. 3 is a block diagram showing the overall configuration of the water treatment system. , Fig. 4 is an explanatory diagram of the conceptual configuration of the mineral addition device, Fig. 5 is an explanatory diagram of electron field processing by the cluster processing device, Fig. 6 is an enlarged partial cross-sectional front view of the chilled water device, and Fig. 7 is a Peltier element. FIG. 8 is an explanatory diagram of the configuration of the electrolytic dechlorination/deozonation apparatus, FIG. 9 is an explanatory diagram of the electrolytic sterilization process, and FIG. 10 is a block diagram of the control circuit. In the diagram, A: Water treatment system B Niosin sterilization device C: Chilled water device D: Mineral addition device E: Cluster treatment device F: Electrolytic dechlorination/deozonation device G: Water heating device 44: Reflux piping

Claims (1)

[Claims] 1. An ozone sterilizer that sterilizes tap water using ozone in a running waterway from the upstream side to the downstream side, and removes residual ozone and residual chlorine from the tap water after sterilization treatment. A deozonating/dechlorinating device is installed, and a reflux pipe is branched from the upstream or downstream side of the deozonating/dechlorinating device, and the end of the reflux piping is connected to an ozone sterilization device. Water treatment system. 2. The water treatment system according to claim 1, wherein an electrolytic dechlorination/deozonation device is used as the deozonation/dechlorination device.