JP2000107746A - Reclaimed water supply apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reclaimed water supply apparatus becoming simple in structure by dispensing with a solenoid valve or an exclusive pump and an indivisual water level detector because reinwater and living waste water can be sent only by the piping of an air lift. SOLUTION: When the water level in a water storage chamber 6 is an upper limit value or less, air is sent to respective air lift pipes 11, 12 by opening a valve 24 and the living waste water in a first inflow chamber 1 is sent to a purifying chamber 4 through the air lift pipe 11 and biologically treated aerobically by diffused air from an air diffusing pipe 3 to be purified. This purified water overflows a partition wall 53 to flow in a sterilizing chamber 5. Rainwater in a second inflow chamber 2 is sent to the sterilizing chamber 5 by the air lift pipe 12. The water in the sterilizing chamber 5 overflows a partition wall 54 to be sent to the water storage chamber 6 and this water is sent to a reutilizing destination by a piping 14 and a pump 15. The air lift water sending amt. from the inflow chamber 1 or 2 high in water level becomes larger than that from the inflow chamber 2 or 1 low in water level.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wastewater supply device for reusing wastewater such as rainwater, bathtub drainage, washing drainage and other domestic wastewater, and particularly receives rainwater and domestic wastewater separately. Sewage supply device capable of.

[0002]

2. Description of the Related Art Rainwater, bathtub drainage, and other domestic wastewater (eg, bathroom washroom drainage, washbasin drainage, and washing drainage) are being stored in storage tanks and are increasingly used for toilets, watering, car washing, and the like. The rainwater has a higher degree of cleanliness than bathroom drainage, and can be reused by simple filtration as needed.

Japanese Patent Application Laid-Open No. Hei 8-19773 discloses that the turbidity of raw water such as rainwater or domestic wastewater is detected, and when the turbidity of the raw water is equal to or less than a predetermined value, the raw water is introduced into a storage tank. A system for draining raw water as it is when a predetermined value or more is described.

[0004]

The turbidity detection sensor is expensive and requires a lot of maintenance. In addition, rainwater does not always exist, and it is necessary to adopt a structure that considers the time of drought. The present invention is low cost, simple in structure,
It is another object of the present invention to provide an intermediate water supply device capable of efficiently treating domestic wastewater and supplying a large amount of clean reused water. Another object of the present invention is to provide a device that can effectively use rainwater when there is rainwater.

[0005]

According to the present invention, there is provided an intermediate water supply apparatus comprising: a first inflow chamber into which a first raw water for inflow flows;
A second inflow chamber into which raw water for middle water flows, a first airlift pipe provided in the first inflow chamber, a second airlift pipe provided in the second inflow chamber, A first air supply pipe connected to a lower part of the first air lift pipe, a second air supply pipe connected to a lower part of the second air lift pipe,
Wherein the first inflow chamber and the second inflow chamber are disposed at substantially the same level, the first air lift pipe and the second air lift pipe are disposed at substantially the same level, The supply pipe and the second air supply pipe are connected to a common blower.

In such an intermediate water supply apparatus, when air is sent from the common blower to the first air lift pipe and the second air lift pipe, more water is supplied from the inflow chamber having a higher water level to the air lift pipe. Watered by Therefore, for example, when domestic wastewater is introduced into the first inflow chamber and rainwater is introduced into the second inflow chamber for reuse, the water is preferentially supplied from the inflow chamber with the higher water level. become. Therefore, when rainfall is large, rainwater is preferentially sent,
During the drought season, domestic wastewater can be reused preferentially.

In the present invention, it is preferable that domestic wastewater such as laundry wastewater be purified by biological treatment or the like and then reused. When reusing purified water or rainwater from domestic wastewater, it is preferable to sterilize the water before sending it to the reuse destination.

In the present invention, it is preferable that purified water and rainwater are collected and sent by a common water supply means. In the present invention, it is preferable that a water level detector be provided in the water storage chamber for storing the water to be sent out, and that water be supplied when the water level in the water storage chamber falls below a predetermined value.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to FIG.

FIG. 1 is a schematic sectional view of an intermediate water supply device according to an embodiment.

In the tank 50 of the intermediate water supply device, a partition plate 5 is provided.
1, 52, 53, 54 divide the compartment into a first inflow chamber 1, a second inflow chamber 2, a purification chamber 4 having a diffuser tube 3 and a biological support plate (not shown), a sterilization chamber 5 and a water storage chamber 6. .

In the first inflow chamber 1, bath tub drainage, bathroom wash basin drainage, washing drainage and wash-down drainage are introduced as domestic wastewater. Toilet and kitchen wastewater are discharged directly to sewage and are not subject to reuse.

The second inflow chamber 2 contains rainwater (including snowmelt water).
Is introduced. Although not shown, the first inflow chamber 1 and the second inflow chamber 1
Each of the inflow chambers 2 is provided with an overflow port, and domestic wastewater overflowing from the first inflow chamber 1 is discharged to a sewer pipe, and rainwater overflowing from the second inflow chamber 2 is discharged to a rainwater pipe.

The domestic wastewater in the first inflow chamber 1 is sent to the purification chamber 4 via the first airlift 11, and the rainwater in the second inflow chamber 2 is sent to the sterilization chamber 5 via the second airlift pipe 12. . In addition, you may send water to the purification room 4 or the water storage room 6 as needed. Air is introduced into these air lift pipes 11 and 12 from a common blower 7 to a lower portion of each of the air lift pipes 9 and 10 via a pipe 8 and pipes 9 and 10 branched from the pipe 8. As shown, the bottom surfaces of the first inflow chamber 1 and the second inflow chamber 2 are at the same level, and the lower ends of the air lift pipes 9 and 10 are also at the same level. Furthermore, the level of the connection point (air blowing port) between the pipes 9 and 10 and the air lift pipes 11 and 12 is also the same.

The pipes 9 and 10 are provided with flow rate control valves 19 and 20 for manually adjusting the air flow rate.

A pipe 13 for supplying air to the diffuser 3 branches from the pipe 8. An air cutoff valve 24 is provided in the pipe 8 downstream of the location where the pipe 13 branches off.

A water level sensor 21 is provided in the first inflow chamber 1, and the water level detected by the sensor 21 (height from the bottom of the inflow chamber).
Is below the specified water level (for example, 30 cm)
A valve closing signal is output from the controller 23, and the valve 24 is closed.

A water level sensor 26 is provided in the water storage chamber 6,
When the water level detected by the sensor 26 falls below a predetermined water level, a valve opening signal is output from the controller 27 to the on-off valve 29, and the water is supplied to the water storage chamber 6 through the water supply pipe 28. Therefore, even if the domestic wastewater and rainfall are scarce for a long time, the water supply is replenished, so that the reuse destination of the intermediate water supply device can be supplied with water. When the water level in the water storage chamber 6 reaches the prescribed upper limit water level, the controller 27 closes the valve 24 via the controller 23 and switches to the explosion of the air diffuser 3.

In this intermediate water supply apparatus, first, water is filled in the first inflow chamber 1 and the second inflow chamber 2 so as to have the same water level, and air is blown from the blower 7 to the air lift pipes 11, 1.
Send to 2. Then, the amount of water supplied from each of the air lift pipes 11 and 12 is measured, and the valve 1 is controlled so that the amount of water supplied is equal.
The opening degree of 9, 20 is adjusted.

The domestic wastewater and rainwater flowing into each of the inflow chambers 1 and 2 are reused as follows.

When the water level in the water storage chamber 6 is lower than the upper limit, the valve 24 is opened, and the air lift pipes 1 as well as the air diffuser pipe are opened.
Air is sent to the first and second inflow chambers 1, and the domestic wastewater in the first inflow chamber 1 is sent to the purification chamber 4 via the air lift pipe 11,
Aerobic biological treatment and purification by diffused air. The purified water overflows the partition wall 53 and flows into the sterilization chamber 5. Rainwater in the second inflow chamber 2 is sent to the sterilization chamber 5 by the air lift pipe 12. Rainwater and purified domestic wastewater merge in the sterilization chamber 5 and are sterilized by electrolytic sterilization or addition of a chlorine agent. The water in this sterilization chamber 5 is
4 and is sent to the water storage chamber 6, where the pipe 14 and the pump 1
5 to the re-use destination.

When the water level in the water storage chamber 6 reaches the upper limit value, the valve 24 is closed and explosion occurs.

In this intermediate water supply device, the air lift pipes 11 and 12 are arranged at the same level and each air lift pipe 1
Since the air inlets of 1, 12 are also at the same level,
The airlift water flow from the inflow chamber with the higher water level is greater than the airlift water flow from the inflow chamber with the lower water level.

Therefore, when the amount of rainfall is large, the water level of the second inflow chamber 2 is higher than that of the first inflow chamber 1, and the rainwater is supplied with higher priority than the domestic wastewater. Conversely, during the drought period, the water level in the second inflow chamber 2 becomes lower than in the first inflow chamber 1, and domestic wastewater is preferentially sent.

As described above, according to the medium water supply device, the simpler air lift mechanism can preferentially reuse the one that has a large amount of domestic wastewater and rainwater. This air lift mechanism has a very simple structure, is inexpensive, and has good durability.

When the water level in the inflow chamber 1 reaches a prescribed lower limit, the valve 24 closes and the air lift operation stops.

By the way, the difference in the amount of water supplied from the air lift pipes 11 and 12 increases as the difference in water level in the inflow chambers 1 and 2 increases. In this embodiment, the difference in water level in the inflow chambers 1 and 2 increases. When it reaches about 30 cm, water is no longer pumped from the air lift pipe in the low water level chamber. That is, the water level difference between the two inflow chambers 1 and 2 does not increase to 30 cm or more. Therefore,
The water level sensor 21 is provided only in the first inflow chamber, and the water level detected by the water level sensor 21 is 30 cm from the lower end of the air lift pipe.
When the upper level has been reached, the valve 24 is closed. As described above, in this embodiment, since only one water level sensor is required for the inflow chambers 1 and 2, the cost is low. However, in the present invention, water level sensors may be provided in both the inflow chambers 1 and 2. In the present invention, three or more inflow chambers may be provided.

[0028]

According to the intermediate water supply apparatus of the present invention, rainwater and domestic wastewater can be supplied only by the piping of the air lift, so that a solenoid valve, a dedicated pump and an individual water level detecting device are not required, and the structure is simplified. Therefore, cost is reduced. This airlift is much easier to maintain than a pump.
In addition, the water level is detected only by installing a water level meter in the inflow room of the domestic wastewater such as a bathtub or a bathroom. For example, natural management such as stopping water supply at around 30 cm is possible.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of an intermediate water supply device according to an embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st inflow chamber 2 2nd inflow chamber 3 Air diffuser 4 Purification room 5 Sterilization room 6 Water storage room 7 Blower 15 Pump

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Keisuke Sakakibara, Inventor 5-1-1 Koie Honcho, Tokoname-shi, Aichi Pref. Inside

Claims (9)

[Claims] 1. A first inflow chamber into which a first raw water for inflow flows, a second inflow chamber into which a second raw water for inflow flows, and a second inflow chamber provided in the first inflow chamber A first air lift pipe, a second air lift pipe provided in the second inflow chamber, a first air supply pipe connected to a lower portion of the first air lift pipe, and a second air lift pipe. A second air supply pipe connected to a lower portion, wherein the first inflow chamber and the second inflow chamber are arranged at substantially the same level, and the first air lift pipe and the second air lift pipe are An intermediate water supply device which is arranged at substantially the same level, wherein the first air supply pipe and the second air supply pipe are connected to a common blower. 2. The middle water supply device according to claim 1, wherein the first raw water for middle water is domestic wastewater, and the second raw water for middle water is rainwater. 3. The medium water supply device according to claim 2, further comprising a drainage purification chamber into which the outflow water of the first air lift pipe flows. 4. The medium water supply device according to claim 3, wherein the waste water purification chamber is provided with an air diffuser to which air is supplied from the blower. 5. The air supply system according to claim 4, wherein when at least one of the first and second inflow chambers has a water level equal to or lower than a predetermined water level, the air supply to the first air lift pipe and the second air lift pipe is stopped. And a control means for blowing air only to the air diffusing means. 6. The collective chamber according to claim 3, wherein an outflow water from the wastewater purifying chamber and an outflow water from the second air lift pipe are provided. A means for sending water from the wastewater to a reused wastewater supply apparatus. 7. The medium water supply device according to claim 6, wherein a sterilization device is provided in the collection chamber. 8. The intermediate water supply device according to claim 7, wherein the collecting chamber includes a sterilizing chamber and a water storage chamber, and the sterilizing device is provided in the sterilizing chamber. 9. The apparatus according to claim 8, further comprising a water level detecting means in said water storage chamber, and a means for replenishing tap water when a water level detected by said water level detecting means is lower than a predetermined water level. And sewage supply equipment.