JPH1099879A - Coombined treating method of independent treatment purifying tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a purifying tank using an existing independent treatment purifying tank and capable of performing combined treatment. SOLUTION: This combined treatment tank is constituted by arranging a biological treatment tank 18 consisting of a contact aeration tank 20 having a contact material 13, the backwashing pipe 15 provided to the lower part of the contact material and an air diffusion cylinder 14 and provided with a second inflow port 36 and a sedimentation tank 21 and a disinfection tank 22 in the vicinity of an existing independent treatment purifying tank 1 wherein a sedimentation separation chamber 4 having a first inflow port 33, a contact aeration chamber 5, a sedimentation chamber 6 and a disinfection chamber 7 are allowed to communicate with each other in this order and the first outflow port 34 of the independent treatment purifying tank 1 is allowed to communicate with the second inflow port 36 of the biological treatment tank 18 by a communication pipe 35 and the communication pipe 35 is branched on the way thereof to set the branch part to a drain inflow pipe 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for merging a single treatment wastewater treatment tank by connecting a biological treatment tank to an existing single treatment wastewater treatment tank.

[0002]

2. Description of the Related Art Conventionally, as a method of purifying human waste, there is a method using a single treatment septic tank. Explaining the single treatment septic tank with reference to FIG. 3, human waste to be purified flows into the sedimentation / separation chamber 4 from the first inlet 33, where solid-liquid separation is performed. The separated supernatant liquid is transferred to the upper part of the contact aeration chamber 5 and is stirred by air bubbles discharged from the air diffuser 9 installed in the contact aeration chamber 5.
By the stirring, the supernatant liquid comes into contact with the contact material 12 provided in the contact aeration chamber 5, and the oxidative removal of the nutrient substrate is gradually performed. If the stirring is continued as it is, the biofilm is thickly deposited on the surface of the contact material 12 and becomes blocked. Therefore, the biofilm is periodically removed by the backwash tube 10 provided below the contact material 12. The detached biofilm is returned to the precipitation separation chamber 4 (not shown). After passing through the contact aeration chamber 5,
After flowing into the sedimentation chamber 6 for sedimentation separation, only the supernatant liquid enters the disinfection chamber 7 and is sterilized with a chlorine agent.
It is released more.

[0003]

In the above-mentioned single treatment septic tank, the type of water to be purified is only human waste, and it is not possible to simultaneously treat domestic wastewater in a household already having a single treatment septic tank. Can not. Therefore, in the case where human waste and domestic wastewater are combined, the only option is to purchase and install a new wastewater treatment tank. However, this is costly, and the disposal problem of the old single treatment septic tank becomes serious. As is well known, many septic tanks are manufactured by FRP, and disposing of the septic tank requires much labor. If the septic tank is buried and killed because it cannot be discarded, a new problem that the land cannot be used effectively arises.

The present invention solves the disposal problem of a single treatment septic tank by effectively using an existing single treatment septic tank and uses the single treatment septic tank as a part of a combined treatment septic tank, and purchases a new combined treatment septic tank. The purpose is to convert to a merger treatment septic tank at a lower cost.

[0005]

According to the present invention, as shown in FIG. 1, a sedimentation separation chamber 4 having a first inlet 33, a contact aeration chamber 5, a sedimentation chamber 6, and a first outlet are provided. The existing single treatment septic tank 1 in which the disinfection chamber 7 having the pipes 34 is communicated in this order.
In the vicinity, a contact aeration tank 20 having a contact material 13, a backwash pipe 15 provided below the contact material 13, and an air diffuser 14, and having a second inlet 36, a settling tank 21, The biological treatment tank 18 including the disinfecting tank 22 is installed, and a first outlet 34 of the single treatment / purification tank 1 and a second inlet 36 of the biological treatment tank 18 are communicated by a communication pipe 35. By branching on the way, the branch portion is formed as a drainage inflow pipe 25.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The outline of the present invention will be described with reference to FIG. The present invention separates and treats sewage discharged from homes into "human waste and kitchen wastewater (hereinafter referred to as wastewater A)" and "bath water and laundry wastewater (hereinafter referred to as wastewater B)". Drains water to the existing single treatment septic tank 1 and drains water B directly to the biological treatment tank 18 without passing through the single treatment septic tank 1. It should be noted that kitchen wastewater does not necessarily need to be discharged to the single treatment septic tank 1 and can be discharged directly to the biological treatment tank 18 without any problem if the solid content is small. More specifically, the drainage A is caused to flow from the human waste inflow pipe 23 and the drainage inflow pipe 24, and the wastewater B is caused to flow from the wastewater inflow pipe 25.

[0007] When purifying in the septic tank of the present invention, a medicine tube (a container for containing a sterilizing agent such as a chlorine agent) in the disinfecting chamber 7 originally installed in the existing single treatment septic tank 1 is removed. The air supply from the blower 8 to the contact aeration chamber 5 is stopped before use. By doing so, the existing single treatment / purification tank 1 functions as a sedimentation / separation tank in the entire vessel, and the volume of the attached biological treatment tank can be reduced.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG. 1. Drainage A naturally flows into the single treatment septic tank 1 from the human waste inflow pipe 23 and the wastewater inflow pipe 24. Is removed and transferred to the biological treatment tank 18 by the communication pipe 35. The wastewater inflow pipe 25 branched from the communication pipe 35 is connected to the biological treatment tank 18.
Wastewater B also flows in from.

The wastewater flowing into the biological treatment tank 18 is subjected to biological treatment by oxygen in the air supplied from the air diffuser 14 in the contact aeration tank 20, and a biological film is gradually formed on the contact material 13. If the purification of the wastewater is continued as it is, the contact material 13 is clogged by the biofilm. Therefore, an operation of periodically peeling the biofilm from the contact material 13 using the backwash tube 15 is performed. The above-described air supply to the air diffuser 14 and the backwash pipe 15 is performed from the dedicated blower 16, but the blower 8 used in the single treatment septic tank 1 may be used. The treated water biologically treated in the contact aeration tank 20 passes through the sedimentation tank 21, is sterilized with chlorine in the disinfection tank 22, and then discharged by the pump 17.

FIG. 2 shows that only the night soil of the wastewater A flows into the single treatment septic tank 1, and the kitchen wastewater and the wastewater B
Into the biological treatment tank 18. As previously mentioned,
In the present invention, since the single treatment septic tank is used as the sedimentation separation tank, it is possible to directly flow into the biological treatment tank 18 when the solid content of the kitchen wastewater is small.

[0011]

As described above, according to the present invention, it is possible to use an existing single treatment septic tank and easily form a combined treatment tank. Therefore, there is no need to dispose of the existing single treatment septic tank, and it is possible to keep costs lower than installing a new combined treatment septic tank.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a septic tank showing one embodiment of the present invention.

FIG. 2 is a side sectional view of a septic tank showing another embodiment of the present invention.

FIG. 3 is a schematic cross-sectional view of a single treatment septic tank conventionally used.

[Explanation of symbols]

1. Separate treatment septic tank 2. Partition wall 3. Partition wall 4. Sedimentation separation chamber 5. 5. Contact aeration chamber Settling chamber 7. Disinfection room 8. Blower 9. Diffuser tube 10. Backwash tube 11. Medicine cartridge 12. Contact material 13. Contact material 14. Aeration cylinder 15.
Backwash tube 16. Dedicated blower 17. Pump 18. Biological treatment tank 19. Partition wall 20. Contact aeration tank 21. Sedimentation tank 22. Disinfection tank 23. Night soil inflow tube 24. Drainage inflow pipe 25. Drainage inflow pipe 26. Biological treatment tank 33. First inlet 34. First outlet 35. Communication pipe 3
6. 2nd inlet

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Jun Hibino 1250 Shimoedori, Shimodate-shi, Ibaraki Pref.Hitachi Chemical Industry Co., Ltd.

Claims (1)

[Claims] 1. An existing single treatment / purification tank in which a sedimentation separation chamber having a first inlet, a contact aeration chamber, a sedimentation chamber, and a disinfection chamber having a first outlet are communicated in this order. In the, having a contact material and a backwash tube and an air diffuser provided below the contact material,
And a contact aeration tank provided with a second inlet, a settling tank,
By installing a biological treatment tank consisting of a disinfection tank, the first outlet of the single treatment purification tank and the second inlet of the biological treatment tank are communicated by a communication pipe, by branching the communication pipe in the middle, A method for merging single treatment septic tanks, wherein the branch portion is a drainage inflow pipe.