JPH0639386A - Waste water treating apparatus - Google Patents

Abstract

PURPOSE:To provided a waste water treating apparatus which can adjust flow quantity of domestic waste water discharged from a bathtub and can make BOD of the domestic waste water run out of the bathtub hardly come to a condition with a standard value or higher. CONSTITUTION:A drain plug means 9 for adjusting the quantity of drainage of domestic waste water discharged from a bathtub 7 is provided on an outlet 8 of the bathtub 7 and the quantity of the domestic waste water discharged from the bathtub 7 can be adjusted by performing repeatedly switching of the outlet 8 by the drain plug means 9 and changing the ratio of opening of the outlet 8. In addition, when as the drain plug means 9, a syphon pipe 11 provided outside of the side wall 10 of the bathtub 7 so as to communicate with the bathtub 7, a detecting means 12 provided on the syphon pipe 11 and detecting the water level in the bathtub 7, and a valve 13 actuated in accordance with a signal sent from the detecting means 12 are provided, as the detecting means 12 etc., can be set outside of the bathtub 7, there exists no projection such as the detecting means 12 in the bathtub 7.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a treatment tank 6 for treating domestic wastewater 5 discharged from a bathroom 1, a washroom 2, a kitchen 3, a toilet 4, etc.
The present invention relates to a sewage treatment device that purifies the water.

[0002]

2. Description of the Related Art As shown in FIG. 7, an anaerobic tank 14, a contact aeration tank 15, a settling tank 16, a disinfecting tank 17, and other processing tanks 6 are provided, and a bathroom 1, a washroom 2, a kitchen 3, a toilet 4 are provided. Domestic wastewater 5 discharged from the etc. is treated tanks 6 installed in a predetermined order
Stay for a certain period of time and purify sequentially with microorganisms,
A sewage treatment device is known in which domestic wastewater 5 purified until the BOD becomes equal to or lower than a reference value flows out of a tank from an outlet 18, and the domestic wastewater 5 to be purified flows through an admission port 19 due to a water level difference. It is advancing from the processing tank 6 to the processing tank 6 via it.

[0003]

However, in the above conventional technique, since the purified domestic wastewater 5 is advected due to the water level difference, as shown in FIGS. 8 (a) and 8 (b), the domestic wastewater is removed. When a large amount of 5 inflowed at a time, it could not be retained in each treatment tank 6 for a certain period of time, and as shown in FIG. 8 (c), the BOD was out of the tank without being sufficiently purified. It will be leaked. The primary reason for the large inflow of domestic wastewater 5 at one time is the discharge from the bathtub 7 installed in the bathroom 1.

Therefore, the present invention has been invented to solve the above-mentioned problems in the prior art. That is, the problem is to adjust the flow rate of the domestic wastewater 5 discharged from the bathtub 7 and to flow out of the tank. It is to provide a sewage treatment apparatus that can make it difficult for the BOD of domestic wastewater 5 to be in a state of exceeding a reference value.

[0005]

The sewage treatment apparatus of the present invention is a sewage treatment apparatus for purifying domestic wastewater 5 discharged from a bathroom 1, a washroom 2, a kitchen 3, a toilet 4, etc. in a treatment tank 6. The drainage port 8 of the bathtub 7 is provided with drain plug means 9 for adjusting the drainage amount of the domestic wastewater 5 discharged from the bathtub 7.

Further, as the drain plug means 9, a siphon pipe 11 provided outside the side wall 10 of the bath 7 so as to communicate with the inside of the bath 7, and a detection provided on the siphon pipe 11 for detecting the water level in the bath 7. It is possible to use the one provided with the means 12 and the valve 13 which operates in response to the signal sent from the detection means 12.

[0007]

In the sewage treatment apparatus of the present invention, domestic drainage discharged from the bathtub 7 by repeatedly opening and closing the drainage port 8 by the drainage plug means 9 or changing the opening ratio of the drainage port 8 is used. The flow rate of 5 can be adjusted.

When the siphon tube 11 is provided,
Since the detection means 12 and the like can be installed outside the bathtub 7, the detection means 12 and the like do not project into the bathtub 7.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on the embodiments shown in the drawings.

The sewage treatment apparatus of FIG. 1 is the first aspect of the present invention.
In one embodiment, the domestic wastewater 5 discharged from the bathroom 1, the washroom 2, the kitchen 3, the toilet 4, etc. is made to flow from the inflow port 20 provided in the anaerobic first tank 141, and the anaerobic first tank 141, Domestic effluent purified by keeping it in each treatment tank 6 such as the second anaerobic tank 142, contact aeration tank 15, settling tank 16 and disinfection tank 17 for a certain period of time and sequentially purifying by microorganisms, etc. until the BOD falls below a standard value. 5 is a sewage treatment apparatus that flows out of the sterilization tank 17 from an outlet 18 provided in the disinfection tank 17, and adjusts the amount of domestic wastewater 5 discharged from the bath 7 to the drain 8 of the bath 7. The drain plug means 9 is provided.

As the drain plug means 9, the drain port 8 of the bathtub 7
And a timer 22 for intermittently driving the electromagnetic valve 21, and the domestic wastewater 5 discharged from the bathtub 7 is sent to the treatment tank 6 side in a plurality of divided steps. Is.

The operation of this sewage treatment apparatus is shown in FIG.
The time charts shown in FIGS. 2B, 2C, 2D, 2E, and 2F will be described.

FIG. 2 (a) shows changes in the amount of domestic wastewater 5 discharged from the bathroom 1, washroom 2, kitchen 3, toilet 4 and the like. Breakfast, washroom, toilet at 6 to 9 o'clock. Four
First peak 23 due to etc. appears, lunch at 10 to 12 o'clock,
The second peak 24 due to washing or the like appears, and the third peak 25 appears due to dinner, bathing, or the like at 16 to 22 o'clock, and particularly the third peak 25 due to discharge from the bathroom 1 appears extremely large.

2 (b), 2 (c) and 2 (d)
Is the operating status of the timer 22, the operating status of the solenoid valve 21,
And showing the drainage status of domestic wastewater 5 discharged from the bathtub 7. The timer 22 is turned on at a fixed time interval, OF
Repeating F, the electromagnetic valve 21 that operates in conjunction with the timer 22 is intermittently driven and repeatedly opens and closes at fixed time intervals, so that the domestic wastewater 5 in the bathtub 7 is discharged at a fixed amount at fixed time intervals. .

FIG. 2 (e) shows changes in the amount of domestic wastewater 5 flowing into the anaerobic first tank 141 from the inflow port 20, and the first peak 23 due to breakfast, washroom, toilet 4, etc., at 6 to 9 o'clock. Appears, and the second peak 24 due to lunch, washing, etc. appears at 10 to 12 o'clock, and the third peak 25 appears at 16 to 2 due to dinner, bathing, etc. The third peak 25 is the solenoid valve 21 and the timer 22. Due to the action of the drain plug means 9 consisting of, the low state continues for a long time without a sudden rise. The first peak 23 and the second peak 2
No. 4 has no direct relation to the drainage from the bath tub 7, so that the inflow amount hardly changes.

FIG. 2 (f) shows changes in the BOD of sewage discharged from the outlet 18 to the outside of the tank.
The reference value slightly exceeds the reference value only in the time zone of 2 o'clock, but becomes less than the reference value in the other time zones.

Therefore, in this sewage treatment apparatus, the drainage amount of the large amount of domestic wastewater 5 discharged from the bathtub 7 is adjusted by the action of the drain plug means 9, and the inflow amount of the domestic wastewater 5 flowing into the anaerobic first tank 141 is adjusted. Is adjusted so that the domestic wastewater 5 is retained in the respective treatment tanks 6 for a certain period of time to be sufficiently purified, and it is possible to make it difficult for the BOD of the outflowing wastewater to be in a state of a reference value or more.

The number, order, etc. of the processing tanks 6 can be arbitrarily selected according to the installation location, processing purpose and the like.

The sewage treatment apparatus of FIGS. 3 and 4 is an embodiment of the second aspect of the present invention, in which the domestic waste water 5 discharged from the bathroom 1, the washroom 2, the kitchen 3, the toilet 4, etc. One tank 141
The anaerobic first tank 14 through the inflow port 20 provided in the
1, second anaerobic tank 142, contact aeration tank 15, precipitation tank 1
6. From the outlet 18 provided in the disinfection tank 17, the domestic wastewater 5 which has been retained in the respective treatment tanks 6 of the disinfection tank 17 for a certain period of time and successively purified by microorganisms etc. A sewage treatment device that flows out of the tank,
Domestic wastewater 5 discharged from the bathtub 7 into the drainage port 8 of the bathtub 7.
It is provided with drain plug means 9 for adjusting the amount of drainage.

As the drain plug means 9, a siphon pipe 11 provided outside the side wall 10 of the bath 7 so as to communicate with the inside of the bath 7, and a detection means 12 provided on the siphon pipe 11 for detecting the water level in the bath 7. And a valve 13 that operates according to a signal sent from the detection means 12. The siphon tube 11 is formed by bending a stainless steel tube into a substantially U-shape and forming a slit 27 through which light passes through the vertical tube 26, and a glass 28 is formed in the slit 27.
It is made by fitting. Further, the lateral pipe 29 is externally connected to a communication hole 30 formed in the side wall 10 of the bathtub 7,
It communicates with the inside of the bathtub 7. The detection means 12 includes an optical sensor 31 for detecting the water level in the bathtub 7, and an optical sensor 3
1 and a control unit 32 that outputs a signal in accordance with the water level detected. As shown in FIG. 5, the valve 13 changes its opening ratio in response to a signal sent from the detecting means 12, and its opening ratio increases as the water level decreases. A switch for opening and closing the valve 13 is provided separately from the detection means 12, and the valve 13 can be opened and closed when the bathtub 7 is filled with hot water or when cleaning the bathtub 7.

The operation of this sewage treatment apparatus is shown in FIG.
The time charts shown in FIGS. 6B and 6C will be described.

FIG. 6A shows changes in the amount of domestic wastewater 5 discharged from the bathroom 1, the washroom 2, the kitchen 3, the toilet 4, etc., as in the case of the above embodiment.

FIG. 6 (b) shows changes in the amount of domestic wastewater 5 flowing into the anaerobic first tank 141 from the inflow port 20, and the first peak 23 due to breakfast, washroom, toilet 4, etc. at 6 to 9 o'clock. The second peak 24 due to lunch, washing, etc. appears at 10 to 12 o'clock, and the third peak 25 appears at 16 to 2 due to dinner, bathing, etc. The third peak 25 is the siphon tube 11 and the detection means 12. Due to the action of the drain plug means 9 including the valve 13 and the valve 13, the low state continues for a long time without a sudden rise. The first peak 2
The third and second peaks 24 are not directly related to the drainage water from the bathroom 1, so that the inflow amount hardly changes.

FIG. 6 (c) shows changes in the BOD of sewage discharged from the outlet 18 to the outside of the tank.
The reference value slightly exceeds the reference value only in the time zone of 2 o'clock, but becomes less than the reference value in the other time zones.

The number and order of the processing tanks 6 can be arbitrarily selected according to the installation location, processing purpose and the like.

[0026]

As described above, in the sewage treatment apparatus of the present invention, the drainage plug means 9 repeatedly opens and closes the drainage port 8 or changes the opening ratio of the drainage port 8.
It is possible to adjust the flow rate from the bathtub 7, which is the first cause of large inflow of domestic wastewater 5 at one time, to make it difficult for the BOD of the domestic wastewater 5 flowing out of the tank to exceed the standard value. It is a thing.

Further, when the siphon pipe 11 is provided outside the side wall 10 of the bathtub 7, the detection means 12 and the like can be installed outside the bathtub 7, and the detection means 12 and the like project into the bathtub 7. Therefore, the bathtub 7 can be widely used, and the cause of malfunction or failure such as a bather touching the detection means 12 or the like can be eliminated.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing a sewage treatment apparatus which is an embodiment of claim 1 of the present invention.

FIG. 2 is a time chart showing the operation of FIG.
(A) is the change in the amount of domestic wastewater generated, (b) is the operating status of the timer, (c) is the operating status of the solenoid valve, (d) is the draining status of domestic wastewater discharged from the bathtub, and (e) is Changes in the amount of domestic wastewater that flows in, (f) is the B of domestic wastewater that flows out of the tank
It is a change in OD.

FIG. 3 is a schematic sectional view showing a sewage treatment apparatus which is an embodiment of claim 2 of the present invention.

FIG. 4 is a side view of a main part of FIG.

5 is a graph showing the opening ratio of the valve of FIG. 3 versus the water level in the bath.

FIG. 6 is a time chart showing the operation of FIG.
(A) is a change in the amount of domestic wastewater generated, (b) is a change in the amount of domestic wastewater flowing in, and (c) is B of the domestic wastewater flowing out of the tank.
It is a change in OD.

FIG. 7 is a schematic cross-sectional view showing a sewage treatment apparatus that is a conventional example of the present invention.

8 is a time chart showing the operation of FIG.
(A) is a change in the amount of domestic wastewater generated, (b) is a change in the amount of domestic wastewater flowing in, and (c) is B of the domestic wastewater flowing out of the tank.
It is a change in OD.

[Explanation of symbols]

 1 Bathroom 2 Washroom 3 Kitchen 4 Toilet 5 Domestic Wastewater 6 Treatment Tank 7 Bathtub 8 Drainage Port 9 Drain Plug Means 10 Sidewall 11 Siphon Pipe 12 Detecting Means 13 Valve

Claims (2)

[Claims] 1. In a sewage treatment device for purifying domestic wastewater 5 discharged from a bathroom 1, a washroom 2, a kitchen 3, a toilet 4, etc. in a treatment tank 6, the wastewater is discharged from the bathtub 7 to a drainage port 8 of the bathtub 7. Drain plug means 9 for adjusting the amount of discharged domestic wastewater 5
A sewage treatment apparatus comprising: 2. A siphon pipe 1 provided with a drain plug means 9 outside a side wall 10 of the bath 7 so as to communicate with the inside of the bath 7.
1. A detection means 12 provided in the siphon pipe 11 for detecting the water level in the bathtub 7, and a valve 13 which operates in response to a signal sent from the detection means 12. Sewage treatment equipment.