JP2004230238A - System and method for treating intermediate water - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reasonable constitutive technique for obtaining intermediate water by treating waste water and using the obtained intermediate water as toilet washing water. <P>SOLUTION: The subject system for treating the intermediate water has an intermediate water treatment tank 101 for treating the water to be treated to obtain the intermediate water, a toilet 105 having a water feeding tank 106, an intermediate water supplying route 102 for supplying the intermediate water from the tank 101 to the tank 106, a clean water supplying route 107 for supplying cleane water to the tank 106 and a clean water supply amount adjusting means 108. The amount of the clean water to be supplied to the tank 106 can be adjusted by the means 108 according to the amount of the intermediate water to be supplied to the tank 106 through the route 102. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a technology for treating wastewater and using it as intermediate water.
[0002]
[Prior art]
Japanese Patent Application Laid-Open No. 2001-137871 discloses, as an example of a septic tank, a configuration of a middle water utilization device that treats water to be treated such as bathroom drainage and rainwater and uses the same as middle water such as toilet cleaning water and garden tree watering water. Have been. This publication discloses a hybrid-type septic tank having a plurality of treatment systems including an intermediate water utilization device according to the concentration of pollutants.
[0003]
In the hybrid wastewater tank, the treated water that has been processed in the plurality of treatment tanks is sent to the storage tank through the disinfection tank, and then discharged to the wastewater supply path using the pump. . By the way, although it is known that the wastewater obtained through such a wastewater treatment tank is used as a toilet or water for sprinkling, for example, in the case of a toilet, the rational construction technology of the supply mode of the wastewater is further described. It is necessary to take some ingenuity.
[0004]
[Patent Document 1]
JP 2001-137871 A
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a rational configuration technique for treating sewage to obtain medium water and using the same as toilet flush water.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the invention described in each claim is configured.
According to the invention as set forth in claim 1, a wastewater treatment device that processes treated water to obtain wastewater, a toilet having a water supply tank, and wastewater obtained by the wastewater treatment device are supplied to the water supply tank. A middle water treatment system having a middle water supply path for sending, a middle water supply path for supplying clean water to the water supply tank, and a middle water supply amount adjusting unit is configured. Typically, the "sewage treatment apparatus" is preferably configured as a wastewater treatment tank having various treatment tanks such as a biological treatment tank disposed in a housing, as one mode of a septic tank. The `` treatment water '' treated by the sewage treatment apparatus does not matter whether the concentration of the pollutant is high or low, but typically, the water to be treated having a relatively low concentration of the pollutant such as bathroom drainage or rainwater is used. Is preferred. In addition, the sewage treatment equipment is often placed at a lower position than the toilet water tank, or from the viewpoint of stable supply of sewage, a sewage supply pump should be installed in the “sewage supply path”. Is preferred. Further, the “water tank” of the toilet shall preferably include both a high tank installed at a high place and a low tank installed near the toilet, and the “water supply path” may be a general water tank. It is preferable to arrange so as to guide the tap water from the tap water.
[0007]
The water supply amount adjusting means in the present invention is configured to adjust the water supply amount to the water supply tank in accordance with the supply amount of the water supplied to the water supply tank through the water supply path. With such a configuration, in a typical system of using middle water for supplying water to a water supply tank of a toilet, it is possible to construct a rational system by cooperating each supply line of middle water and clean water. Of the various types of water used for water supply, especially for toilet water tanks, the user does not always check the amount of water supply, but on the other hand, even if there is a power outage or equipment failure, the water supply is stabilized. There is a relatively high demand for. For this reason, water is normally supplied to the water supply tank through the water supply path, and when the supply amount of the water is reduced or stopped, water is appropriately supplied to prevent the water amount in the water supply tank from decreasing. In addition, it is possible to utilize the cleaning water in a stable manner.
[0008]
The present invention relates to a method of adjusting the supply amount of clean water to a water supply tank, and preferably includes, for example, a structure in which a water supply valve is provided on a clean water supply path and opening and closing of the water supply valve is controlled. Regarding the opening / closing control of the water supply valve, for example, a mode in which the microcomputer performs monitoring of the amount of supplied water, a float member that moves up and down in accordance with the water level in the water supply tank is disposed, and the float member moves in accordance with the vertical movement of the float member. And the like to open and close the water supply valve. Further, the present invention suitably includes a mode in which the water supply valve in the form of a water supply path is manually opened and closed as necessary.
[0009]
(Invention of claim 2)
According to the invention described in claim 2, the wastewater treatment apparatus in the wastewater treatment system according to claim 1 includes at least an aerobic treatment tank and a water storage tank downstream of the aerobic treatment tank. It is configured as an intermediate water treatment tank. The medium water supply path connects the water storage tank and the water supply tank of the medium water treatment device, and a water supply pump is disposed on the medium water supply path. Thus, a specific mode for supplying the intermediate water to the water supply tank in the intermediate water treatment system is configured. In addition, as each treatment tank in the middle water treatment tank, in addition to the aerobic treatment tank and the water storage tank, a contaminant removal tank, an anaerobic treatment tank, a treatment water tank, and a configuration in which all or part of a disinfection tank and the like are appropriately attached. Good.
[0010]
(Invention of claim 3)
According to the third aspect of the present invention, it is possible to construct a treatment method having substantially the same configuration as that of the wastewater treatment method using the wastewater treatment system according to the first aspect. Of course, it is also possible to add a component substantially equivalent to the component of the wastewater treatment system described in claim 2 and construct a more rational wastewater treatment method.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a wastewater treatment system 100 according to an embodiment of the present invention and a wastewater treatment method by the wastewater treatment system 100 will be described with reference to the drawings. 1 schematically shows the configuration of the wastewater treatment system 100, and FIG. 2 schematically shows the configuration of the wastewater treatment tank 101 used in the wastewater treatment system 100.
[0012]
The sewage treatment system 100 generally includes a sewage treatment tank 101, a sewage supply path 102, a sewage supply pump 103, a toilet 105, a water supply tank 106, a sewage supply path 107, a flow control valve 108, a flow rate The adjustment controller 109 is mainly configured.
[0013]
Among them, the wastewater treatment tank 101 is configured as a treatment tank for appropriately treating the inflowing wastewater to obtain wastewater, and is an element corresponding to the “sewage treatment apparatus” in the present invention. Although not shown, the present embodiment is configured such that treated water having a relatively low concentration of pollutants, such as bathroom drainage and rainwater, is treated in the treated water treatment tank 101 to obtain the treated water. The sewage supply path 102 connects the sewage treatment tank 101 to a water supply tank 106 provided adjacent to the toilet 105.
An intermediate water supply pump 103 is provided on the intermediate water supply path 102. The intermediate water supply pump 103 is used for pumping the intermediate water from the intermediate water treatment tank 101 disposed lower than the water supply tank 106 to the water supply tank 106. The water supply tank 106 is provided adjacent to the toilet 105 in the house, and supplies the stored washing water to the toilet 105 as appropriate. Although not particularly shown, a float valve is disposed in the water supply tank 106, and the float valve floats up as the water level in the water supply tank 106 rises, thereby supplying the middle water through the middle water supply path 102. Adjust the amount appropriately.
[0014]
A water supply path 107 is connected to the water supply tank 106 in addition to the intermediate water supply path 102, and the water supply tank 106 is particularly configured so that water from a water supply (not shown) can be introduced into the water supply tank 106. The medium water supply path 102 and the clean water supply path 107 are connected to the water supply tank 106 using water injection ports provided in the water supply tank 106, respectively. Therefore, it is not necessary to form a special path connecting portion in the water supply tank 106. A flow regulating valve 108 is arranged on the way of the water supply path 107. The flow rate adjusting valve 108 changes the flow path cross-sectional area of the water supply path 107 or shuts off the flow path to appropriately adjust the supply amount of the water supply. In the present embodiment, the flow control valve 108 is subjected to open / close control based on a flow control valve control signal from a flow control controller 109. The flow rate adjusting valve 108 and the flow rate adjusting controller 109 are elements corresponding to the “water supply amount adjusting means” in the present invention. The flow rate adjustment controller 109 generates an open / close control signal for the flow rate adjustment valve 108 based on an intermediate water supply amount signal from an intermediate water supply flow rate sensor (not shown) provided in the intermediate water supply path 102. Specifically, when the supply amount of the intermediate water to the water supply tank 106 is equal to or more than a predetermined reference amount, a flow control valve control signal is generated so that the flow control valve 108 is closed, and the flow rate is lower than the predetermined reference amount. In this case, a flow control valve control signal is generated such that the flow control valve 108 is opened.
[0015]
FIG. 2 shows a detailed configuration of the intermediate water treatment tank 101 in the present embodiment. The sewage treatment tank 101 includes a contaminant removal tank 121, an anaerobic treatment tank 123, a biological treatment tank 125, a treatment water tank 127, and a disinfection device 129 from the inflow portion 113 side where the water to be treated flows into the sewage treatment tank housing 110. And the water storage tanks 131 are arranged in this order, and the processing tanks are appropriately communicated with each other by the processing channel 111. The water to be treated, which has been appropriately subjected to sewage treatment in each treatment tank in the middle water treatment tank 101, is discharged from the water storage tank 131 as middle water, and is supplied to the water supply tank 106 via the middle water supply pump 103 shown in FIG. Sent.
[0016]
The intermediate water treatment tank 101 in the present embodiment can correspond to treated water (sewage) having various pollutant concentrations, but by disposing the water storage tank 131 on the downstream side of the disinfection device 129, The treated water to be treated can be suitably used as flushing water for toilets. When the concentration of pollutants in the water to be treated flowing into the sewage treatment tank 101 is relatively low, the configurations of the contaminant removal tank 121, the anaerobic treatment tank 123, and the like are appropriately omitted, and the aeration tank and the precipitation tank are used. And the like may be appropriately arranged and configured.
[0017]
Regarding the water to be treated that has flowed into the intermediate water treatment tank housing 110 through the inflow portion 113, first, in the impurity removal tank 121, impurities such as solids in the water to be treated are separated from the water by solid-liquid separation. It is processed.
[0018]
The water to be treated, which has been treated in the impurity removing tank 121, is transferred to the anaerobic treatment tank 123 through the treatment channel 111. The anaerobic treatment tank 123 is provided with a filter medium (not shown) to which anaerobic microorganisms for anaerobic treatment (reduction treatment) of the organic pollutants are attached, and the organic pollutants in the water to be treated are removed. Anaerobic treatment is appropriately performed by the anaerobic microorganisms inside.
[0019]
The anaerobic water to be treated in the anaerobic treatment tank 123 is then transferred to the biological treatment tank 125. In the biological treatment tank 125, a biological treatment region (not shown) filled with a granular carrier so as to be able to flow is formed. The granular carrier is formed in a hollow cylindrical shape, and has a large number of aerobic microorganisms that aerobicly treat (oxidize) organic pollutants. In addition, as the material of the granular carrier, for example, an inorganic carrier such as pearlite, shirasu balloon, foamed concrete, activated carbon, porous ceramic, and porous glass, and a synthetic resin carrier such as polyethylene, polypropylene, polyvinyl chloride, and polyurethane may be appropriately used. it can. Thus, in the biological treatment tank 125, aerobic treatment is performed by supplying diffused air to the biological treatment region during normal operation.
[0020]
The water to be treated that has undergone the anaerobic treatment in the anaerobic treatment tank 123 and the aerobic treatment in the biological treatment tank 125 is sent to the treatment water tank 127 through the treatment channel 111. The treated water tank 127 according to the present embodiment is an element which also has a function as a solid-liquid separation tank for treated water, and sedimentation of solid components is promoted in the treated water tank 127, thereby calming the treated water. Is Next, the water to be treated in the treatment water tank 127 is sent to the disinfection device 129 through the treatment channel 111. The water to be treated that has been disinfected by the disinfection device 129 is further sent to the water storage tank 131 through the treatment channel 111. The water to be treated is temporarily stored in the water storage tank 131, and further sedimentation of the solid component is promoted during the water storage. The water to be treated, which has been clarified as much as possible in the water storage tank 131, is discharged to the water supply path 102 shown in FIG. 1 through the discharge section 135 as water, and supplied to the water supply tank 106 of the toilet 105. When supplying the intermediate water, an intermediate water supply pump 103 is used. The intermediate water supply pump 103 can be appropriately replaced with, for example, an air lift pump or a submersible pump. A configuration may be adopted in which a part of the water to be treated in the treatment water tank 127 is returned to the upstream treatment tank such as the impurity removal tank 121 by an air lift pump or the like, and the treatment is performed again from the upstream side.
[0021]
Next, the operation and usage of the intermediate water treatment system 100 according to the present embodiment configured as described above will be described in detail. For example, sewage having a relatively low concentration of pollutants such as bathroom drainage and rainwater is sent to the intermediate water treatment tank 101 shown in FIG. 2 as water to be treated. Specifically, the water to be treated that has flowed into the intermediate water treatment tank housing 110 through the inflow portion 113 shown in FIG. 2 is subjected to the impurity removal treatment by solid-liquid separation in the impurity removal vessel 121, and the anaerobic treatment tank 123 And undergoes aerobic treatment in the biological treatment tank 125. The water to be treated is further subjected to a calming treatment in the treated water tank 127, whereby intermediate water is obtained.
[0022]
As shown in FIG. 1, the sewage obtained by the sewage treatment tank 101 is sent to a water supply tank 106 adjacent to the toilet 105 via a sewage supply path 102 via a sewage supply pump 103. At this time, the flow rate controller 109 appropriately monitors the flow rate of the supplied water through the supplied water flow sensor disposed on the supplied water path 102. The middle water sent to the water supply tank 106 is stored in the water supply tank 106 and is appropriately used as washing water for the toilet 105 as needed. Although not particularly shown, a float member that moves up and down according to the water level is arranged in the water supply tank 106. The float member works in conjunction with a switching valve that opens and closes the intermediate water supply path 102, and the supply of water from the intermediate water supply path 102 to the water supply tank 106 is appropriately adjusted according to the rise in the water level in the water supply tank 106. This is configured so that the supply of intermediate water to the water supply tank 106 does not become excessive.
[0023]
When the water is normally supplied from the water treatment tank 101 to the water supply tank 106, the flow control valve 109 on the water supply path 107 side through the flow control valve control signal 109b by the flow control controller 109. 108 is closed, and the supply of clean water to the water supply tank is regulated.
[0024]
By the way, in operation of the middle water treatment system, for example, the middle water supply pump 103 may fail, or the supply of middle water may be interrupted by a power failure. In this case, since the supply of the wastewater from the wastewater treatment tank 101 to the water supply tank 106 is reduced or stopped, the amount of water stored in the water supply tank 106 is reduced, and there is a possibility that trouble may occur when using the toilet. obtain. In such a case, in the present embodiment, the flow rate adjustment controller 109 controls the opening of the flow rate adjustment valve 108 via the flow rate adjustment valve control signal 109b based on the intermediate water supply amount signal 109a.
[0025]
Therefore, according to the present embodiment, usually, the wastewater treated by the wastewater treatment tank 101 is used as the washing water for the toilet 105 to effectively use the resources, and for example, at the time of a power outage or when the wastewater is supplied. When the supply of the intermediate water to the water supply tank 106 is hindered, such as when the pump 103 is out of order, the flow control controller 109 appropriately guides the clean water to the water supply tank 106, thereby causing the water supply tank 106 to have a shortage of water storage. Can be prevented beforehand. As a result, a rational construction technique for treating sewage to obtain medium water and using the same as toilet flush water has been provided.
[0026]
(First Modification)
A first modification of the embodiment of the present invention will be described with reference to FIG. The modification relates to the modification of the water flow rate adjusting means in the embodiment of the present invention, and the illustration and detailed description of the common members will be omitted as appropriate. In the wastewater treatment system 200 according to this modification, a wastewater-side flow control valve 204 having a float member 204a is provided at a location where the wastewater is supplied from the wastewater supply path 202 to the water supply tank 206 of the toilet 205.
Further, a water supply side flow control valve 208 having a float member 208a is provided at a location where water is supplied from the water supply path 207 to the water supply tank 206. The middle water side flow control valve 204 and the clean water side flow control valve 208 respectively cause the float members 204a, 208a to rise as the water level of the toilet flushing water in the water supply tank 206 rises. The intermediate water supply path 202 and the clean water supply path 207 are each configured to be able to be closed in conjunction with the ascent operation of the 208a.
[0027]
In the present modification, when the supply of the clean water is performed normally, the clean water is supplied to the water supply tank 206 through the clean water supply pump 203, so that the toilet cleaning water in the water supply tank 206 is provided. Standard water level is maintained. When the water level in the water supply tank 206 becomes higher than required, the float member 204a moves upward to close the middle water flow control valve 204, thereby restricting further supply of middle water. . Similarly, the rise of the float member 208a closes the water supply side flow control valve 208, and the supply of clean water to the water supply tank 206 is also regulated.
As a result, an unnecessary rise in the water level in the water supply tank 206 is reasonably avoided.
[0028]
On the other hand, when the supply of the middle water decreases due to a power failure, a failure of the middle water supply pump 203, or the like, or when the supply of the middle water is interrupted, the water level in the water supply tank 206 may decrease. In such a case, as the water level in the water supply tank 206 decreases, the float member 208a moves downward, and the water flow rate adjustment valve 208 is opened.
As a result, the tap water is supplied to the feed water tank 206 through the feed water supply path 207, and it is possible to prevent a shortage of the stored water in the feed water tank 106 from occurring.
[0029]
(Second Modification)
A second modification of the embodiment of the present invention will be described with reference to FIG. Note that, like the first modification, the modification relates to the modification of the water flow rate adjusting means in the embodiment of the present invention, and illustration and detailed description of common members are omitted as appropriate. Shall be. In the middle water treatment system 300 according to the present modification, a middle water side flow control valve 304 having a float member 304a is provided at a point where water is supplied from the middle water supply path 302 to the water supply tank 306 of the toilet 305. On the other hand, a water supply adjustment valve 308 is provided in the water supply path 307. The clean water supply adjustment valve 304 is configured to be able to be manually opened / closed as appropriate in accordance with the supply state of the waste water from the waste water supply path 302 side.
[0030]
In the present modification, when the supply of the clean water is performed normally, the clean water is supplied to the water supply tank 306 via the clean water supply pump 303, so that the toilet cleaning water in the water supply tank 306 is provided. High water level is maintained. When the water level in the water supply tank 306 becomes higher than a predetermined level, the float member 304a moves upward to close the middle water side flow control valve 304, thereby restricting further supply of middle water. . On the other hand, the water supply adjustment valve 308 is normally closed, and the supply of water to the water supply tank 306 is regulated. As a result, an unnecessary rise in the water level in the water supply tank 306 is reasonably avoided.
[0031]
On the other hand, when the supply of the middle water is reduced due to a power failure, a failure of the middle water supply pump 303, or the supply of the middle water is cut off, the water level in the water supply tank 306 may decrease. In such a case, the user of the toilet 305 manually opens the tap water flow control valve 308. As a result, the tap water is supplied to the feed water tank 306 through the feed water supply path 307, and it is possible to prevent a shortage of the stored water in the feed water tank 306 from occurring.
[0032]
Regarding the present invention, in view of the various embodiments described above, various aspects can be configured as follows.
(Aspect 1)
"The sewage treatment system according to claim 1 or 2,
The medium water treatment system according to claim 1, wherein the water supply amount adjusting means includes a water stop valve provided in the water supply path to adjust a water supply amount to the water supply tank. "
With this configuration, the supply amount of clean water to the water supply tank of the toilet can be rationally adjusted.
[0033]
(Aspect 2)
"The sewage treatment system according to aspect 1,
The middle water treatment system according to claim 1, wherein the water stop valve adjusts a supply amount of clean water according to a height position of a float member that moves up and down according to a water level in the water supply tank. With this configuration, it is possible to rationally adjust the supply amount of purified water while reliably reflecting the water level in the water supply tank.
[0034]
(Aspect 3)
"The sewage treatment system according to aspect 1,
The middle water treatment system, wherein the water stop valve is configured as a manually operated valve. "
With this configuration, while the water is normally supplied to the toilet water tank, the amount of the water to be treated in the water treatment device is temporarily reduced, and the supply of the water is hindered by a power outage. In an emergency, such as when a failure occurs in the supply system of the intermediate water, it is possible to take measures such as opening the water stop valve and leading the clean water to the toilet water supply tank.
[0035]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the rational construction technology for treating sewage to obtain middle water and using it as toilet flush water is provided.
[Brief description of the drawings]
FIG. 1 schematically shows an entire configuration of a middle water treatment system according to an embodiment of the present invention.
FIG. 2 schematically shows an entire configuration of a middle water treatment tank according to the embodiment of the present invention.
FIG. 3 is a partial schematic diagram illustrating a configuration according to a first modification of the present embodiment.
FIG. 4 is a partial schematic diagram illustrating a configuration according to a second modification of the present embodiment.
[Explanation of symbols]
100 Medium water treatment system 101 Medium water treatment tank (medium water treatment device)
102 Water supply path 103 Water supply pump 105 Toilet 106 Water supply tank 107 Water supply path 108 Flow rate control valve (water supply amount adjustment means)
109 Flow rate controller (water supply adjustment means)
109a Water supply amount signal 109b Flow control valve control signal 110 Water treatment tank housing 111 Processing channel 113 Inflow part 121 Impurity removal tank 123 Anaerobic treatment tank 125 Biological treatment tank 127 Treatment water tank 129 Disinfection device 131 Water tank 135 Discharge unit 200, 300 Middle water treatment system 203, 303 Middle water supply pump 204, 304 Middle water side flow control valve 204a, 304a Float member 205, 305 Toilet 206, 306 Water supply tank 208, 308 Upper water side flow control valve 208a Float member

Claims (3)

A sewage treatment apparatus for treating the water to be treated to obtain sewage;
A toilet having a water tank,
A middle water supply path for sending middle water obtained by the middle water treatment device to the water supply tank,
A water supply path for supplying water to the water tank,
An intermediate water treatment system having water supply amount adjustment means,
The water supply amount adjusting means is configured to be able to adjust the water supply amount to the water supply tank in accordance with the supply amount of the water supplied to the water supply tank through the water supply path. Wastewater treatment system characterized by the following. The wastewater treatment system according to claim 1,
The middle water treatment device is configured as a middle water treatment tank having at least an aerobic treatment tank and a water storage tank downstream of the aerobic treatment tank,
The medium water treatment system, wherein the medium water supply path connects the water storage tank and the water supply tank, and a water supply pump is disposed on the medium water supply path. A step of obtaining treated water by treating the treated water with the treated water treatment device;
Sending the medium water to a toilet water tank;
Supplying clean water to the water supply tank;
A method of treating wastewater, comprising the step of adjusting the supply amount of clean water to the water supply tank according to the supply amount of wastewater to the water supply tank.

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