JPH10176361A - Reclaimed water treatment system for dwelling house - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reclaimed water processing system which is low-priced and improved in cleaning capacity. SOLUTION: This system is adapted to let sewage flow in a collecting tank 3 to be stored, feed the same from the collecting tank 3 through a pump 4 to a cleaner 1 to be cleaned in the cleaner 1, and reuse the treated water as toilet washing water or the like. The pump 4 is controlled to be intermittently operated in such a manner that the inflow of sewage flowing in the cleaner 1 agrees with the cleaning speed in the cleaner 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a residential sewage treatment system.

[0002]

2. Description of the Related Art The inventors have already developed a residential sewage treatment system as shown in FIG. 3 and applied for it. Is temporarily stored in the drainage catchment tank 3, and the pump 4 is operated to flow into the purification device 1 through the pressure feed pipe 5,
Purification treatment is performed in the purification device 1, and the treated water is stored in a treated water storage tank 2, and the accumulated treated water is supplied to a toilet bowl of a house by operating a pump 6 through a purified water pipe 7. The structure shown in FIG.
In the apparatus described above, the processing speed in the purification device 1 is 1
On the other hand, the amount of domestic wastewater that can flow into the purification device 1 from the pressure feed pipe 5 by the operation of the pump 4 is about 3 liter / minute, However, there is a problem that a general-purpose pump is too fast to perform good biological purification in the purification device 1 and, therefore, the pump 4 must be constituted by an expensive pump having a low flow rate. .

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide an intermediate water treatment system capable of performing good purification treatment using an inexpensive general-purpose pump. The first point is that the domestic wastewater flows into the catchment basin and is stored therein, and the household wastewater is sent from the catchment basin to the purification device via a pump to be purified in the purification device. In a residential sewage treatment system configured to be reusable as toilet wash water, etc., the inflow of domestic wastewater flowing into the purification device from the catchment basin is a purification treatment speed in the purification device. That is, the pumping amount of the pump is controlled so as to match. A second gist of the present invention is to control the delivery amount of the domestic wastewater by operating the pump intermittently in a case where the pump is operated at a constant discharge amount. In addition, the third gist is that, when the pump is an air pump constituting an air lift pump capable of sending domestic wastewater into the purification device, the amount of air is controlled to control the amount of domestic wastewater sent. is there. In addition, the fourth gist is that the domestic wastewater flows into the water collecting basin and is stored therein, and the domestic wastewater is sent from the water collecting basin to the purification device via a pump to be purified in the purification device, and the treated water is supplied to the toilet. In a residential sewage treatment system configured to be reusable as wash water or the like, a partition for preventing diffusion of the inflowing domestic wastewater into the purification device is provided on an inflow side of the household wastewater in the purification device. That is, a wall is provided. A fifth aspect is that a valve for switching to a circulation operation for circulating the treated water into the purification device is provided, and the pump can be used for the circulation operation.

[0004]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment of a residential sewage treatment system. In FIG. 1, domestic wastewater from a house flows into a drainage water collecting tank 3 and is stored therein. A pressure feed pipe 5 is provided upright from the water tank 3, and a three-way valve 8 is provided in the pressure feed pipe 5 on the upstream side.
A pump 4 is provided on the downstream side, so that the domestic wastewater collected in the drainage catchment tank 3 can flow into the purification unit 1 through the pressure feed pipe 5.
The living wastewater can be biologically purified in the inside, and in this example, the first wastewater is introduced into the purification unit 1 at the inflow side of the living wastewater.
A partition wall 11a is provided upright, a second partition wall 11b is provided on the discharge side with a gap, and a third partition wall 11c is provided at a central portion in the purification unit 1.
Further, partition walls 11d, 11e, and 11f are erected on the discharge side, and the first partition wall 11a, the third partition wall 11c, and the partition wall 11e are open on the bottom side.
The upper ends of the second partition wall 11b and the partition walls 11d and 11f are opened, and the first partition wall 11a and the second partition wall 11 are opened.
b, the third cut wall 11c, and the partition wall 11d form a bypass for domestic wastewater that flows in, and the treated water is sent to the treated tank without using a pump by the partition walls 11e and 11f. Further, a delivery pipe 9 is connected to the outlet side of the purification unit 1, and the treated water purified by the purification unit 1 is sent out through the delivery pipe 9 into the treated medium water storage tank 2 and stored therein. Further, a circulation path 10 is connected to the treated intermediate water storage tank 2, and the tip of the circulation path 10 is connected to the three-way valve 8.

[0005] In this embodiment, a general-purpose inexpensive general-purpose pump is used as the pump 4. When the pump 4 is operated, the domestic wastewater collected in the drainage collecting reservoir 3 passes through the pressure feed pipe 5. At this time, the pump 4 is intermittently controlled so that domestic wastewater flows into the purification unit 1 intermittently.
That is, it is possible to cause the pump 4 to intermittently drive the pump 4 to flow into the purification unit 1 with the same amount of domestic wastewater as the treatment amount corresponding to the purification processing speed in the purification unit 1. The biological purification treatment in the unit 1 can be continuously and satisfactorily performed.

The domestic wastewater flowing into the purification section 1 flows down into the purification section 1 so as to descend along the first partition wall 11a and further ascend along the second partition wall 11b. The fact that the domestic wastewater flowing into the section 1 is diffused in the purifying section 1 at a stretch is due to the first partition wall 11a and the second partition wall 11a.
The partition wall 11b prevents the wastewater, which is well prevented by the partition wall 11b, from gradually flowing into the purification unit 1 from the left end in the drawing. The wastewater can be sent out as treated water to the treated intermediate water storage tank 2 side, so that the inflowing domestic wastewater is prevented from being mixed with the treated water in the purification unit 1 at a stretch. Further, by the third cut wall 11c, the partition wall 11d, and the partition walls 11e and 11f,
Mixing of the treated water to the downstream side becomes gentle, preventing rapid mixing.

The pump 4 is operated intermittently. However, when the pump 4 is not operated intermittently, for example, when the treated intermediate water storage tank 2 is full, at night, or when it is out of service for a long period of time, etc. The three-way valve 8 is switched to operate the pump 4, and the treated intermediate water storage tank 2 is passed through the circulation path 10.
The treated water in the inside is sequentially circulated in the purifying section 1, and the biological water is further purified in the purifying section 1 to further improve the quality of the treated water to obtain good treated water. The pump 4 can be effectively used for operation, and only one pump 4 needs to be arranged in the device. The entire cost can be reduced and the device can be configured. Since it can be used, it is possible to configure an apparatus with reduced cost. In addition, since the pump 4 has a stop time, its life can be maintained long, and by performing the circulating operation, the progress of decay in each pipe can be prevented and the clogging of the pipe can be reduced. It is also possible to obtain a great effect.

Next, FIG. 2 is a structural view of a main part of a second embodiment. In FIG. 2, an air lift pipe 1 is used instead of the pressure feed pipe 5.
The three-way valve 8 is provided in the air lift pipe 12, and the circulation path 10 is connected to the three-way valve 8. An air pump 13 is provided upstream of the three-way valve 8 of FIG.
Is connected via an air pipe 14, and when the air pump 13 is operated, air is spouted into the air lift pipe 12 through the air pipe 14, and the drainage water collecting volume is raised with the air rising in the air lift pipe 12. 3 is configured so that the domestic wastewater stored in the airlift pipe 3 rises in the airlift pipe 12 and flows into the purification section 1. The airlift pipe 12, the air pump 13, and the air pipe 14 form an airlift pump. Have been.

In such a configuration using an air lift pump, domestic wastewater rises in the air lift pipe 12 by air sent from the air pump 13, so that the amount of domestic wastewater sent out is adjusted by the amount of air from the air pump 13. It is possible to finely adjust the discharge amount of domestic wastewater by the air pump 13. Further, since the air is mixed into the domestic wastewater flowing into the purification section 1, the amount of dissolved oxygen increases, and the activity of microorganisms in the purification section 1 is activated, thereby purifying a good purification function. This can be achieved in the part 1. Further, the three-way valve 8 is switched to operate the air pump 13 to draw out the treated water in the treated intermediate water storage tank 2 from the circulation path 10 and circulate the treated water through the air lift pipe 12 into the purification unit 1. The circulating operation can be favorably performed, and the circulating operation can be favorably performed by one air pump 13. The switching control of the three-way valve 8 can be performed using, for example, a level sensor or a turbidity sensor.

[0010]

According to the present invention, domestic wastewater is caused to flow into a water collecting basin and stored therein, and the domestic wastewater is sent out from the water collecting basin to a purification device via a pump to be purified in the purification device, and the treated water is purified. In a residential sewage treatment system configured to be reusable as toilet wash water, etc., the inflow of domestic wastewater flowing into the purification device from the catchment basin is a purification treatment speed in the purification device. Since the pumping amount of the pump is controlled so as to match, the amount of domestic wastewater flowing into the purification device and the treatment amount in the purification device match, and continuous good biological purification in the purification device. Processing can be performed, and there is an effect that high quality treated water can be obtained.

[0011] Further, in the case of the pump in which the pump is operated at a constant discharge rate, the pump is operated intermittently to control the discharge amount of the domestic wastewater, so that an inexpensive general-purpose pump can be used. The pump can be operated intermittently to make the discharge amount equal to the purification processing speed in the purification device, good purification power can be obtained with the purification device, the pump can be inexpensive and the overall cost can be reduced. The intermittent operation has the effect of extending the life of the pump and reducing power consumption.

Further, when the pump is an air pump constituting an air lift pump capable of sending domestic wastewater into the purification device, the amount of air discharged from the domestic wastewater is controlled by controlling the air amount of the air pump. The air pump is controlled to control the amount of air sent into the air lift pump, and the air pump makes it possible to finely adjust the amount of domestic wastewater sent to the purification device side. Inside, the amount of dissolved oxygen is increased by air, which has the effect of further improving the purification power in the purification device.

[0013] Further, domestic wastewater is caused to flow into the water collecting basin and stored therein, and the household wastewater is sent from the water collecting basin to the purification device via a pump for purification treatment in the purification device, and the treated water is used as toilet washing water or the like. In the residential sewage treatment system configured so as to be reusable, a partition wall for preventing diffusion of the inflowing domestic wastewater into the purification device is provided on the inflow side of the household wastewater in the purification device. As a result, it is possible to prevent the household wastewater flowing through the partition wall from being diffused in the purification device at a stretch, and to prevent the inside of the purification device from being contaminated by a large amount of dirty domestic wastewater. Has the effect of producing good treated water.

In addition, a valve for switching to a circulation operation for circulating the treated water into the purification device is provided, and the pump can be used for the circulation operation. The pump can be operated to perform a circulating operation of circulating in the purification device, the quality of the treated water generated by the circulating operation can be improved, and the treated water having better water quality can be obtained. (1) Since one pump can be used for circulation operation, there is an effect that the entire apparatus can be reduced in size and a low-cost apparatus can be configured.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a residential sewage treatment system according to a first embodiment.

FIG. 2 is a schematic configuration diagram showing a main part of a second embodiment.

FIG. 3 is a schematic configuration diagram of a conventional residential sewage treatment system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Purification part 2 Treated intermediate water storage tank 3 Drainage water collecting tank 4 Pump 5 Pressure feeding pipe 8 Three-way valve 9 Delivery pipe 10 Circulation path 11a First partition wall 11b Second partition wall 12 Air lift pipe 13 Air pump 14 Air pipe

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Tatsuro Yamamoto 5-1-1 Koiehonmachi, Tokoname-shi, Aichi Prefecture Inax Corporation (72) Inventor Junko Takada 5-1-1 Koiehonmachi, Tokoname-city, Aichi Prefecture Inax Corporation (72) Inventor Hiroyuki Tsuji 5-1-1 Koiehonmachi, Tokoname-city, Aichi Pref.

Claims (5)

[Claims] 1. A domestic wastewater is caused to flow into a water collecting basin and stored therein, and the domestic wastewater is sent from the water collecting basin to a purification device via a pump for purification treatment in the purification device. In the residential sewage treatment system configured to be reusable as such, the inflow amount of domestic wastewater flowing into the purification device from the catchment tank is matched with the purification processing speed in the purification device. A residential sewage treatment system characterized by controlling the delivery rate of the pump. 2. The house according to claim 1, wherein the pump is operated at a constant discharge rate, and the pump is operated intermittently to control the discharge rate of the domestic wastewater. Middle water treatment system. 3. When the pump is an air pump constituting an air lift pump capable of sending domestic wastewater into a purification device, the amount of air supplied from the air pump is controlled to control the amount of domestic wastewater sent. The residential sewage treatment system according to claim 1. 4. A domestic wastewater is caused to flow into a water collecting basin and stored therein, and the domestic wastewater is sent out from the water collecting basin to a purification device via a pump for purification treatment in the purification device, and the treated water is used as toilet washing water or the like. In the residential sewage treatment system configured so as to be reusable, a partition wall for preventing diffusion of the inflowing domestic wastewater into the purification device is provided on the inflow side of the household wastewater in the purification device. A residential sewage treatment system characterized by being used. 5. The valve according to claim 2, wherein a valve for switching to a circulation operation for circulating the treated water into the purification device is provided, and the pump can be used for the circulation operation. Item 4. A residential sewage treatment system according to item 3.