JPH067785A - Sewage treatment apparatus - Google Patents

Abstract

PURPOSE:To make BOD of living waste water flowing out of a tank hard to become a standard value or more. CONSTITUTION:In a sewage treatment apparatus subjecting living waste water discharged from a bathroom 1, a washstand 2, a kitchen 3 or a toilet 4 to purification treatment in a treatment tank 6, a tank means storing the living waste water 5 discharged from the bathroom 1 and controlling the discharge amount of waste water to the treatment tank 6 is provided and the living waste water 5 discharged from the bathroom 1 is stored in the tank means to be discharged to the treatment tank 6 little by little. Further, a detection means 8 detecting the level of the living waste water 5 in the treatment tank 6 and a control means 9 controlling the discharge amount of the living waste water 5 discharged from the bathroom 1 on the basis of the signal from the detection means 8 are provided and, when the living waste water 5 exceeds a definite water level, a signal is sent to the control means 9 from the detection means 8 to reduce the discharge amount of waste water and, when the living waste water 5 lowers from the definite water level, a signal is sent to the control means 9 from the detection means 8 to increase the discharge amount of waste water.

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. 5, an anaerobic tank 10, a contact aeration tank 11, a settling tank 12, a disinfection tank 13 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 falls below a standard value flows out of a tank through an outlet 14, and the purified domestic wastewater 5 flows through an admission port 15 due to a difference in water level. 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. 6 (a) and 6 (b), the domestic wastewater is discharged. 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. It will be leaked. The primary reason for the large inflow of domestic wastewater 5 at one time is the discharge from the bathtub 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 waste water 5 discharged from the bathroom 1 and to flow it 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]

In the sewage treatment apparatus according to the first aspect of the present invention, domestic waste water 5 discharged from the bathroom 1, the washroom 2, the kitchen 3, the toilet 4, etc. is purified by the treatment tank 6. The sewage treatment apparatus is characterized by comprising tank means 7 for storing domestic wastewater 5 discharged from the bathroom 1 and adjusting the amount of wastewater discharged to the treatment tank 6 side.

As a method of adjusting the amount of waste water by the tank means 7, a method of reducing the flow rate by thinning the connecting pipe 17 on the side of the processing tank 6 of the tank 16 or a processing tank 6 of the tank 16 is used.
It is possible to use a method of reducing the flow rate by partially thinning the side connecting pipe 17 or a method of reducing the discharge rate 110 of the tank 16 to reduce the flow rate.

In the sewage treatment apparatus according to claim 2 of the present invention, the sewage treatment apparatus for purifying domestic wastewater 5 discharged from the bathroom 1, the washroom 2, the kitchen 3, the toilet 4, etc. in the treatment tank 6 is treated. A detection means 8 for detecting the water level of the domestic wastewater 5 in the tank 6, and an adjusting means 9 for adjusting the amount of the domestic wastewater 5 discharged from the bathroom 1 in response to a signal from the detection means 8. To do.

The reason why the amount of drainage is limited to only the domestic drainage 5 from the bathroom 1 is that a large amount of water is drained at one time, and solid substances are simultaneously discharged from the kitchen 3, toilet 4, etc. This is because the tank means 7 or the adjusting means 9 may be clogged.

[0009]

In the sewage treatment apparatus according to claim 1 of the present invention,
Since the domestic wastewater 5 discharged from the bathroom 1 is stored by the tank means 7 and discharged little by little to the processing tank 6 side, a large amount of the domestic wastewater 5 does not flow into the processing tank 6 at one time.

In the sewage treatment apparatus according to the second aspect of the present invention, when the domestic wastewater 5 exceeds a certain water level, a signal is sent from the detecting means 8 to the adjusting means 9 to reduce the amount of wastewater, and when the water level falls below the certain water level, it is detected. A signal is sent from the means 8 to the adjusting means 9 to increase the amount of discharged water, so that the water level in the treatment tank 6 can be kept substantially constant at all times.

[0011]

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, domestic effluent 5 discharged from the bathroom 1, the washroom 2, the kitchen 3, the toilet 4, etc. is made to flow into the anaerobic first tank 101 through the inflow port 19 provided in the anaerobic first tank 101. Domestic effluent purified until the BOD falls below the standard value by allowing the anaerobic second tank 102, the contact aeration tank 11, the settling tank 12, and the disinfection tank 13 to stay in the respective processing tanks 6 for a certain period of time and sequentially purifying them by microorganisms and the like. 5 is a sewage treatment apparatus that flows out of the sterilization tank 13 from an outlet 14 provided in the disinfection tank 13, stores the domestic waste water 5 discharged from the bathroom 1 and adjusts the amount of waste water discharged to the processing tank 6 side. It is characterized by comprising a tank means 7 for

As the tank means 7, a tank 16 for storing domestic wastewater 5 discharged from the bathroom 1, a toilet 2 having an upstream end connected to an outlet 18 of the tank 16 and a downstream end excluding the bathroom 1, a kitchen 3, a connection pipe 17 connected in the middle of a pipe 20 for sending domestic wastewater 5 discharged from the toilet 4 and the like to the treatment tank 6, and the connection pipe 17 is
Domestic wastewater 5 stored in tank 16 is treated tank 6 little by little
A pipe having a smaller diameter than that of the other pipes 20 is used to send the pipe to the side.

The operation of this sewage treatment apparatus is shown in FIG.
This will be described with reference to the time charts shown in FIGS.

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 21 due to etc. appears, lunch at 10 to 12 o'clock,
The second peak 22 due to washing or the like appears, and the third peak 23 appears due to dinner, bathing, or the like at 16 to 22 o'clock, and particularly the third peak 23 due to discharge from the bathroom 1 appears extremely large.

FIG. 2 (b) shows changes in the amount of domestic wastewater 5 flowing into the anaerobic first tank 101 from the inflow port 19, and the first peak 21 due to breakfast, washroom, toilet 4, etc. at 6 to 9 o'clock. Appears, the second peak 22 appears at 10 to 12 o'clock due to lunch, washing, etc., and the third peak 23 appears at 16 to 2 o'clock due to dinner, bathing, etc., and the third peak 23 is due to the action of the tank means 7. The low state continues for a long time without a sudden rise.

FIG. 2 (c) shows changes in the BOD of the sewage discharged from the outlet 14 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. By draining the laundry drainage from the bathroom 1, the BOD can be kept below the reference value even during the time period from 10 to 12 o'clock.

Therefore, in this sewage treatment apparatus, even if a large amount of domestic wastewater 5 is discharged from the bathroom 1 at one time, the flow rate of the domestic wastewater 5 flowing into the anaerobic first tank 101 is adjusted by the operation of the tank means 7. The domestic waste water 5 can be 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 outflowing wastewater to be in a state of being equal to or higher than the reference value.

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

The sewage treatment apparatus of FIG. 3 is the second aspect of the present invention.
In one embodiment, domestic effluent 5 discharged from the bathroom 1, the washroom 2, the kitchen 3, the toilet 4, etc. is made to flow into the anaerobic first tank 101 through the inflow port 19 provided in the anaerobic first tank 101. Domestic effluent purified until the BOD falls below a standard value by allowing the anaerobic second tank 102, the contact aeration tank 11, the settling tank 12, and the disinfection tank 13 to stay in the respective processing tanks 6 for a certain period of time and sequentially purifying them by microorganisms and the like. 5 is a sewage treatment apparatus in which 5 flows out of the disinfection tank 13 through an outflow port 14 provided in the disinfection tank 13.
Detecting means 8 for detecting the water level of domestic wastewater 5 inside, and domestic effluent 5 discharged from the bathroom 1 by a signal from the detecting means 8.
And adjusting means 9 for adjusting the amount of drainage.

The detecting means 8 is provided in the anaerobic first tank 101 and is turned off when a large amount of domestic wastewater 5 is discharged from the bathroom 1 and the domestic wastewater 5 in the first anaerobic tank 101 exceeds a predetermined water level. Further, a float switch 24 is used which is turned on when the water level drops below a predetermined level.

As the adjusting means 9, the float switch 2 is used.
4 is used, and when the float switch 24 is OFF, the valve is closed,
When it is ON, it is in an open state.

The operation of this sewage treatment apparatus is shown in FIG.
The time charts shown in FIGS. 4B, 4C, 4D, and 4E will be described.

FIG. 4 (a) 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 above embodiment.

4 (b) and 4 (c) show the operating conditions of the float switch 24 and the solenoid valve 25, and the first peak 21 to the third of the amount of domestic wastewater 5 generated. At the peak 23, the water level in the first anaerobic tank 101 fluctuates greatly, and the float switch 24 is turned on in response to this fluctuation.
The solenoid valve 25 that is turned off and on and operates in conjunction with the float switch 24 opens and closes.

FIG. 4 (d) shows a change in the amount of domestic wastewater 5 flowing into the anaerobic first tank 101 from the inflow port 19, and the first peak 21 due to breakfast, washroom, toilet 4, etc., at 6 to 9 o'clock. Appears, the second peak 22 appears due to lunch, washing, etc. at 10 to 12 o'clock, and the third peak 23 appears at 16 to 2 due to dinner, bathing, etc. The third peak 23 is the detecting means 8 and the adjusting means 9. By the action of, the low state continues for a long time without a sudden rise. Since the first peak 21 and the second peak 22 are not directly related to the drainage from the bathroom 1, the inflow amount hardly changes.

FIG. 4 (e) shows a change in the BOD of the wastewater discharged from the outlet 14 to the outside of the tank, which is 10-1.
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. By draining the laundry drainage from the bathroom 1, the BOD can be kept below the reference value even during the time period from 10 to 12 o'clock.

The number and order of the processing tanks 6 can be arbitrarily selected according to the installation location, processing purpose and the like. Further, as the operation of the adjusting means 9, not only the opening and closing but also the opening amount of the valve can be changed by a water level sensor, a controller and the like.

[0029]

As described above, in the sewage treatment apparatus according to the first aspect of the present invention, the domestic wastewater 5 discharged from the bathroom 1 by the tank means 7 is stored and discharged little by little to the treatment tank 6 side. Yes, adjust the flow rate from the bathroom 1, which is the first cause of large inflow of domestic wastewater 5 at one time, and make it difficult for the BOD of domestic wastewater 5 flowing out of the tank to exceed the standard value. Is something that can be done.

In the sewage treatment apparatus according to the second aspect of the present invention, when the domestic wastewater 5 exceeds a certain water level, a signal is sent from the detecting means 8 to the adjusting means 9 to reduce the amount of the wastewater, and when the domestic water 5 falls below the certain water level, it is detected. Since a signal is sent from the means 8 to the adjusting means 9 to increase the amount of discharged water, the water level in the treatment tank 6 can be kept substantially constant at all times, and the first cause of large inflow of domestic wastewater 5 is It is possible to adjust the flow rate from the bathroom 1 described in 1 above so that the BOD of the domestic wastewater 5 flowing out of the tank is hard to be in a state of being equal to or higher than the reference value.

[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 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. 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 time chart showing the operation of FIG.
(A) is a change in the amount of domestic wastewater generated, (b) is the operation status of the float switch, (c) is the operation status of the solenoid valve, (d)
Is the change in the amount of domestic wastewater that flows in, and (e) is the change in the BOD of the domestic wastewater that flows out of the tank.

FIG. 5 is a schematic cross-sectional view showing a sewage treatment apparatus which is a conventional example of the present invention.

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.

[Explanation of symbols]

 1 Bathroom 2 Washroom 3 Kitchen 4 Toilet 5 Domestic Wastewater 6 Treatment Tank 7 Tank Means 8 Detecting Means 9 Adjusting Means

Claims (2)

[Claims] 1. A domestic wastewater 5 discharged from a bathroom 1 in a wastewater treatment device for purifying a domestic wastewater 5 discharged from a bathroom 1, a washroom 2, a kitchen 3, a toilet 4, etc. in a treatment tank 6.
A sewage treatment apparatus comprising tank means 7 for storing water and adjusting the amount of drainage to the treatment tank 6 side. 2. 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 detects the water level of the domestic wastewater 5 in the treatment tank 6. A sewage treatment apparatus comprising: a detection unit 8 for performing the above operation; and an adjustment unit 9 for adjusting the amount of the domestic waste water 5 discharged from the bathroom 1 in response to a signal from the detection unit 8.