JPH038934A - Household water recycling device - Google Patents

Abstract

PURPOSE:To simplify control of a device described in the title by supplying waste water from a cesspool at a fixed rate with a fixed delivery pump to the side of a microbe treatment device installed in the middle of a waste water supply passage and, at the same time, by supplying tap water to the cesspool in accordance with the fall of the water level at the inside. CONSTITUTION:A fixed delivery pump 33, a microbe treatment device 34, a filtrating device 35 and a disinfecting device 36 are arranged in the middle of a waste water supply passage 7 that drains the waste water stored in a cesspool 6. In the case where the water level at the inside of the cesspool 6 falls below a prescribed level, a water level detector actuates a valve 40 to open and tap water is supplied thereto from a tap water supply device A through a tap water supply pipe 19. The waste water collected in the cesspool 6 is delivered continuously and little by little at a fixed rate with the pump 33 to a high tank 37 through the devices 34, 35 and 36 with filtration and disinfection made therewith, and the water is then supplied as flushing water for a toilet bowl 8. Thereby control of the device can be simplified with stabilized microbe treatment.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an invention for water reuse in residences.

[Prior Art] In the past, water used in residences was used only once for each purpose, and after being used, it was directly discharged into the sewer system as wastewater. For example, the current situation is that other wastewater generated in a residence, such as hot water used in a bathroom washing area, hot water used in a washing machine, or water used in a washbasin, is directly discharged into the sewer system.

[Problems to be solved by the invention] However, as mentioned above, discharging water that has been used only once in a residence for one purpose into the sewer system without reusing it causes the following problems. There is.

■Water is used only once and then drained into the sewer, so all the water needed in the residence is supplied from new tap water.
There are problems in that water bills are rising, which increases the burden on households, and the water utilities that supply water have to have larger equipment, and more effort is required to secure water.

■Water is used only once and then drained into the sewer system, so a large amount of water is discharged into the sewer system, which increases sewer usage charges and increases the burden on households.Also, it is necessary to treat a large amount of sewage water at a sewage treatment facility. As a result, there are problems in that the construction costs are large and the sewage treatment costs are also high.

■Furthermore, in recent years, the demand for water has been increasing year by year, and there are times when the water supply cannot keep up with the demand, such as in the summer.Furthermore, if the demand for water continues to increase in the future, water resources will be affected. From a water resource perspective, it is a water resource problem if the water used in residences is not reused and is directly discharged into the sewer system.

Therefore, it is conceivable to reuse the wastewater generated in the residence as water for flushing toilet bowls. For example, the water used for washing titfi is used directly for flushing the toilet bowl, but it is not always convenient to have drainage from the washing machine when flushing the toilet bowl, so the water used for flushing the toilet bowl is not always available. When using this, there is a problem of unstable supply, which makes it impractical. Therefore, it is conceivable to provide a sewage tank to collect and store the sewage generated in the residence, and to use the water stored in this sewage tank as reused water. However, when collecting wastewater in a wastewater tank and reusing the wastewater, there is a problem that it is not sanitary to use the polluted wastewater as it is. Therefore, it is conceivable to treat the sewage by microbial treatment and reuse it, but since the load varies depending on the amount of sewage, there are problems in that the treatment efficiency is poor and it is difficult to manage the microbial treatment equipment.

The present invention was invented in view of the problems of the conventional examples described above, and its purpose is to purify wastewater used in a residence with microorganisms and reuse it again in the residence. It is possible to reduce the amount of water used and the amount of wastewater, and when reusing wastewater, it can be stably supplied to the reuse site, and a constant amount can be continuously supplied little by little to the microbial treatment equipment. To provide a residential water reuse device that is easy to manage.

[Means for Solving the Problems] In order to achieve the above object, the residential water reuse device of the present invention includes a sewage tank 6 for storing wastewater generated in a residence.
A wastewater supply channel 7 is provided to recycle the water from the wastewater tank 6 as reuse water, and a microbial treatment device 34 is provided in the middle of the wastewater supply channel 7, and the water from the wastewater tank 6 is transferred to the microbial treatment device 34 side. A metering pump 33 is provided to continuously supply a fixed amount little by little, and when the water level in the sewage tank 6 falls below a predetermined water level, the sewage tank 6
The structure includes a tap water supply means A for supplying tap water inside the tank.

[Operation 1] The wastewater generated in the residence is stored in the wastewater tank 6, the wastewater collected in the wastewater tank 6 is supplied to the wastewater supply path 7, and the wastewater is treated with microorganisms in the microbial treatment device 34 in the middle of the wastewater supply path 7. The purified water is then reused as water for flushing toilets, etc. In supplying wastewater to the microbial treatment device 34, the metering pump 33 continuously supplies a fixed amount little by little, so that water is not not supplied to the microbial treatment device 34 continuously. This enables stable microbial treatment. However, by providing a tap water supply means A for supplying tap water into the sewage tank 6 when the water level in the sewage tank 64- falls below a predetermined water level, the inflow of sewage into the sewage tank 6 can be prevented. Despite the instability of the water, the water level in the sewage tank 6 can be maintained reliably, and a fixed amount can be continuously supplied little by little to the microbial treatment device 34 using the metering pump 33.

[Examples] The present invention will be described in detail below based on examples shown in the accompanying drawings.

FIG. 1 shows a schematic perspective view of an embodiment of the invention. Both ends of a circulation path 2 are connected to a bathtub 1 in the bathroom.
An opening at one end of the circulation path 2 serves as a suction port 9, and an opening at the other end serves as a discharge port 10.

A heat retention device 11 such as a heater, a circulation pump 12, a filtration device 13, a sterilization device 14, etc. are provided in the middle of the circulation path 2, and a branch water supply channel 4 is connected to the circulation path 2 via a three-way switching valve 15. is branched, and the tip of this branch water supply channel 4 is connected to the washing machine a3 so that water can be supplied thereto. Circulation path 2
The end of a hot water supply pipe 17 led out from the hot water supply device 16 is also connected to the hot water supply pipe 17, and the hot water supply pipe 17 is provided with an on-off valve 18. The water supply pipes 19 connected to the water supply are each connected to a branch pipe 20 for a wastewater tank, a branch pipe 21 for the supply 8 device,
Branch pipes such as a branch pipe 22 for a shower, a branch pipe 23 for a washing machine, a branch pipe 24 for a washbasin, and a branch pipe 25 for a toilet bowl are branched. Branch for supply IIA equipment! 23 is connected to the hot water supply device 16, and connects tap water to the hot water supply device 16, and supplies hot water heated by the hot water supply device 16 to the bathtub 1 side via the hot water supply pipe 17, or via the shower pipe 26. Hot water is supplied to the shower head 30 and to the mixer faucet 29 of the wash basin 28 via the wash basin hot water piping 27. Also, branch for washing machine ¥! 23 is connected to a valve on the washing machine side so that water can be supplied to the washing machine 3, and
The branch pipe 24 for the washbasin is connected to a mixing faucet 29.

A sewage tank 6 is arranged under the floor 50 of the house, and other wastewater generated in the house, such as the bathroom washing area 5, the washing machine 3, or the washbasin 28, is drained through the drain pipes 3.
2 allows the waste water to flow into the wastewater tank 6. That is, in the embodiment shown in FIG. 1, the sewage tank 6 is arranged below the washroom 51, and
The figure shows an embodiment in which a sewage tank 6 is arranged below a washroom 51 and a bathroom 57. Further, although not shown, the sewage tank 6 may be arranged below the washroom 51, the bathroom 57, and the laundry room, or the sewage tank 6 may be arranged under the floor 50 of other residences. The sewage tank 6 is placed on a floor pan 64 placed under the floor 50, and if water leaks from the sewage tank 6, the floor pan 64 will catch the water, and the leaked water will be drained to the sewer. It is supposed to be done. In this way, by placing the sewage tank 6 under the floor 50 of the residence, the underfloor 50 of the residence, which was conventionally a dead space, can be effectively used outside, not only for detached houses but also for mid-to-high-rise apartment buildings. The sewage tank 6 can be installed by making effective use of the space 50 under the floor of the residence, and as a result, even in an apartment complex, the sewage tank 6 can be installed independently in each unit. The sewage tank 6 located under the floor 50 of this residence contains the washbasin 28 installed in the washroom 51, the wash area 5 of the bathroom 57 next to the washroom 51, or the laundry 8!3 and other wastewater generated in the residence. can be collected using short piping. residential floor 5
2 is provided with an inspection port 54 as shown in FIG. 2, an opening frame 59 is provided at the opening edge of this inspection port 54, and a floor cover 53 that closes the inspection port 54 can be opened and closed in this opening frame 59. It is installed. A manhole portion 56 of the sewage tank 6 is provided below the inspection port 54, and a manhole cover 55 is attached to the manhole portion 56 so as to be openable and closable. A cylindrical container body 61 with a bottom is provided in the sewage tank 6 below the manhole portion 56, and the container body 61 may have a water passage hole on its outer periphery, or the container body 61 itself may have a plurality of openings. A filter 63 is attached along the outer surface side or the inner surface side of the container body 61. It is. 62 in the figure is a drainage pipe,
One end is open to the container body 61H, and the other end is connected to the sewage supply path 7 through a hole in the side wall of the sewage tank 6. Here, the drainage pipe 62 is formed entirely or partially by a flexible hose, and this flexible hose is partially loosened in the sewage tank 6.
Ru. Therefore, when inspecting or cleaning the inside of the sewage tank 6, the floor cover 53 is opened, the manhole cover 55 is opened, the interior is inspected, and the filter 63 is cleaned and the steel pipes are cleaned. Since the entire or part of the drain pipe 62 is a flexible hose, the container body 61 can be pulled out through the inspection port 54 for cleaning, replacement, etc.

A metering pump 33, a microbial treatment device 34, a filtration device 35, a sterilization device 36, a high tank 37, and a low tank 38 are arranged in the drainage supply path 7 for draining water accumulated in the sewage tank 6. The sewage tank 6 is provided with three overflow ports, and the sewage tank 6 is equipped with a valve 4o.
The distal end of the branch pipe 20 for the wastewater tank is connected. In the sewage tank 6, other wastewater generated in the residence, such as drainage from the washing area 5, drainage from the washing machine 3, or drainage from the washbasin 28, flows into the sewage tank 6 through a drain pipe 32, and only a predetermined amount of water flows into the sewage tank 6. When more wastewater flows in than the accumulated water, it is drained from the overflow port 39 to the sewer side, and when the water level in the sewage tank 6 falls below a certain water level, the water level is detected by the water level detector and the valve 40 is opened to keep the clean water at a constant level. The water is supplied up to the water level. Therefore, the water level detector and the valve 40 constitute a tap water supply means A for supplying tap water into the sewage tank 6 when the water level in the sewage tank 6 falls below a predetermined water level. The metering pump 33 is for continuously supplying a fixed amount (for example, 0.217 minutes) of the waste water in the sewage tank 6 toward the microbial treatment device 34 side.

The high tank 37 is arranged above the low tank 38, and a pipe 41 forming a part of the wastewater supply path 7 opens at the top of the high tank 37, and a microbial treatment device 34, a filtration device 35, and a sterilization device 36 are connected to the high tank 37. The waste water that has passed is supplied from the pipe 41 into the high tank 37. A pipe 42 constituting a part of the waste water supply path 7 is led out from the lower part of the high tank 37, and this pipe 42 is connected to a pole tap valve device 43 of the low tank 38. The low tank 38 contains flush water for the toilet bowl 8, but when this flush water is used, the low tank 38
A certain amount of waste water from the high tank 37 is supplied to the tank. An overflow port 44 is provided in the upper part of the high tank 37, and when the water level in the high tank 37 reaches a certain level or higher, water is drained from the over 70-low 44 to the sewage tank 6 or the sewer side.

Further, the high tank 37 is provided with a pole tap device 45 provided at the tip of the branch pipe 25 for the toilet bowl.
When the water level in the toilet bowl 7 falls below a certain level, the pole tap device 45 operates so that clean water is supplied from the toilet bowl branch pipe 25 up to a certain water level.

When the circulation pump 12 operates, the hot water in the bathtub 1 is sucked into the circulation path 2 through the suction port 9 and returned to the bathtub 1 through the discharge port 10. When flowing, the water is kept warm by the heat retention device 11, filtered by the filtration device 13, and sterilized by the sterilization device 14, purifying the hot water in the bathtub 1, and by filling the bathtub 1 with hot water once, you can bathe for many days. It looks like this. In this case, by keeping warm with the heat keeping device 11, 2
The solution is to be able to take a bath for 4 hours. On the other hand, when using the washing machine 3, the three-way switching valve 15 is switched so that the hot water in the bathtub 1 drawn in through the inlet 9 is transferred to the circulation path 2.
The water flows into the branch water supply channel 4 from the middle of the water, is supplied to the washing machine 3, and is used as washing water. When taking a bath, the water level in the bathtub 1 is lowered by using hot water in the bathtub 1 in the washing area 5 or as washing water in the washing machine 3 as described above. A drop in water level is detected by the water level detection means, and when the water level falls below a certain level, the on-off valve 18 opens and the hot water from the water supply device 6 flows into the water supply pipe 1.
7. Incidentally, the hot water in the bathtub 1 is to be replaced in whole or in part after several days of continuous use12.In this case, the hot water in the bathtub 1 is drained from the drainage part 48 of the bathtub 1 to the sewer pipe side.

On the other hand, the sewage collected in the sewage tank 6 is transferred to the metering pump 33.
A fixed amount of wastewater is continuously sent little by little to the wastewater supply channel 7, and the sewage that is continuously sent to the wastewater supply channel 7 little by little is purified by the action of microorganisms in the microbial treatment device 34, and further Filtration device 35, sterilization device 36
The water is filtered and sterilized by passing through, and then supplied to the high tank 37. When cleaning the toilet bowl 8, by opening the on-off valve of the low tank 38, the water in the low tank 38 flows into the toilet bowl 8 and cleans the inside of the toilet bowl 8, and the dirty water after cleaning the toilet bowl 8 is sent to the sewer. Drained. here,
When the water in the low tank 38 is supplied to the toilet bowl 8 side as flush water for the toilet bowl 8, a fixed amount of the waste water in the high tank 37 is supplied into the low tank 3B by the action of a pole tap valve device 43 provided in the low tank 38.

FIG. 3 shows a piping diagram of another embodiment of the present invention.
In this embodiment, a reheating function is added to the hot water supply device 6, and the hot water in the bathtub 1 is reheated via a reheating pipe.

Further, a hot water mixing faucet 46 is provided in the shower pipe 26 so that hot water can be supplied to the bathtub 1.

In addition, in this embodiment, a branch water supply channel 4 and a branch pipe 2 for a washing machine are provided.
3 is connected via a three-way switching valve 47, and washing 8!
The water supplied to the bathtub 3 can be selected between hot water and tap water from the bathtub 1 by switching a three-way switching valve 47.

In the above embodiment, the sewage tank 6 is placed under the floor 50 of the residence, but it may be placed outside the residence.

[Effects of the Invention] In the present invention, as described above, a sewage tank is arranged to collect wastewater generated in a residence, and a drainage supply channel is provided to supply water from the sewage tank as reused water. So,
It is a device that can reuse wastewater generated in a residence by stably supplying it to a reuse point, which can reduce the amount of water used and the amount of drainage in the residence. Since it is equipped with a microbial treatment device, it is hygienic as it can be reused as purified water when wastewater is reused in the residence.In addition, a certain amount of water from the sewage tank is continuously transferred to the microbial treatment device little by little. A metering pump is installed to supply a fixed amount of water, and a tap water supply means is installed to supply tap water into the sewage tank when the water level in the sewage tank falls below a predetermined water level, so it is purified by microbial treatment. In this process, there is no problem of water not being supplied to the microbial treatment equipment, allowing continuous and stable microbial treatment, and even though the flow of sewage into the sewage tank is unstable, the sewage is reliably treated. The water level in the tank is maintained and a fixed amount is continuously supplied little by little to the microbial treatment device using a metering pump, thereby stabilizing the microbial treatment by the microbial treatment device, simplifying the management of the microbial treatment device, and reducing the number of reusable parts. It is something that can be removed by stable and continuous supply.

[Brief explanation of drawings]

Fig. 1 is a schematic perspective view of one embodiment of the present invention, Fig. 2 is a sectional view of the sewage tank portion of the same as above, Fig. 3 is a piping diagram of another embodiment of the present invention, and Fig. 4 is the present invention. is a schematic perspective view of still another embodiment of the invention, in which 6 is a sewage tank, 7 is a wastewater supply channel, 33 is a metering pump, 34 is a microbial treatment device,
A is a tap water supply means. 6-

Claims (1)

[Claims] (1) A sewage tank is placed to collect wastewater generated in the residence, a drainage supply path is provided to supply the water from the sewage tank as reused water, a microbial treatment device is installed in the middle of the drainage supply path, and the sewage tank is installed. A metering pump is installed to continuously supply a fixed amount of water little by little to the microbial treatment equipment.
1. A residential water reuse device comprising a tap water supply means for supplying tap water into the sewage tank when the water level in the sewage tank falls below a predetermined water level.