JP2001239289A - Combined treatment system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a combined sewage treatment tank by effectively utilizing an existing single sewage treatment tank. SOLUTION: The combined sewage treatment tank is constituted by connecting a combined treatment system 20 having a biological filter chamber 22 to the single sewage treatment tank having an anaerobic treatment chamber 3, an aerobic treatment chamber 4, a settling chamber 5 and a disinfection chamber 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a merge processing apparatus.

[0002]

2. Description of the Related Art Purification of human waste is carried out using a single treatment septic tank.

FIG. 4 is a vertical sectional side view showing a conventional single contact septic tank of the separation contact aeration type. In the single treatment septic tank 1, human waste flows into the sedimentation separation chamber 3 from the inflow port 2, performs solid-liquid separation and anaerobic treatment, and is transferred to the contact aeration chamber 4. The contact aeration chamber 4 agitates the treated water that has been transferred by the air bubbles diffused from the diffuser tube 7 and contacts the contact material 8,
The nutrient substrate is oxidized and gradually removed. When the stirring is continued, the contact material 8 is thickened and closed by the biofilm, so that the biofilm is peeled from the contact material 8 by periodically discharging air bubbles from the backwash tube 9. The treated water that has passed through the contact aeration chamber 4 is subjected to sedimentation and separation of solids in the sedimentation chamber 5, the supernatant is transferred to the disinfection tank 6, sterilized, and discharged from the outlet 10. Reference numeral 11 denotes a disinfectant container.

[0004]

The problem with the single treatment septic tank is that the type of sewage to be treated is limited to human waste, and it is not possible to treat domestic wastewater such as kitchen drainage, laundry drainage, wash sink drainage and bathtub drainage. There is.

[0005] This problem can be solved by removing the existing single treatment septic tank and installing a new combined treatment septic tank. However, not only is the construction cost high, but also many single treatment septic tanks require FRP. Because it is made
A new problem also arises with the disposal of the single treatment septic tank that is no longer needed.

Further, if a single treatment septic tank is buried without excavating it, there is no problem of waste disposal, but there is a problem that land cannot be effectively used.

[0007] An object of the present invention is to propose a merged treatment apparatus capable of realizing a merged treatment septic tank by effectively utilizing an existing single treatment septic tank.

[0008]

SUMMARY OF THE INVENTION According to the present invention, there is provided a combined treatment and purification apparatus which constitutes a combined treatment and treatment tank capable of combining and treating treated water by pipe connection to a single treatment and treatment tank. A biological reaction section, and a filtration section for filtering the treated water downstream of the biological reaction section, and a pipe connection to the single treatment / purification tank is configured to remove sewage immediately before flowing into the disinfection chamber of the single treatment / purification tank. An advection pipe for transferring to the biological reaction section, a washing drainage transfer pipe for transferring the treated water after washing the filtration section to the anaerobic treatment section or the sedimentation separation chamber of the single treatment septic tank, and a single treatment for the treated water downstream of the filtration section. It is characterized in that it is performed by a return pipe that returns to the disinfection room of the septic tank.

[0009] A flow control tank is provided upstream of the biological reaction section, and the treated water from the single treatment / purification tank flows into the biological reaction section via the flow control tank.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION A single treatment septic tank constituting a merged treatment septic tank by connecting a merged treatment apparatus of the present invention may include at least an anaerobic treatment chamber or a sedimentation separation chamber and a disinfection chamber. It is necessary, and specifically, as described in the prior art, an inlet and an outlet, and a sedimentation separation chamber, a contact aeration chamber, a sedimentation chamber, and a disinfection tank are preferably provided inside from the upstream side. It is.

[0011] The merge processing apparatus of the present invention comprises at least
What is necessary is just to be provided with the biological reaction part for performing aerobic treatment and the filtration part which filters the treated water.

More specifically, the biological reaction section and the filtration section will be described below. For example, a carrier is filled in a tank to form a carrier layer, and an air diffuser is provided below and inside the carrier tank. The aerobic treatment is mainly performed by the carrier layer above the air diffuser installed inside the filter, and the filtration is mainly performed by the carrier layer below the air diffuser installed inside the carrier layer. Further, as another example, two carrier layers are formed at the upper and lower stages separated by a water flow plate, and an air diffuser is installed below each carrier layer. The downstream carrier layer is configured as a filtration section.

Since the carrier used in the bioreactor is capable of retaining a large amount of microorganisms, it can be synthesized in the form of a net-like cylinder, a skeleton-like sphere, a helix, a small cylinder, a corrugated sheet, a tube, a fiber entanglement, or the like. A molded body made of resin, a molded body made of synthetic resin having closed cells or open cells, or an inorganic substance such as anthracite (anthracite), silica sand, or ceramic can be suitably used.

As the carrier (filter medium) used in the filtration section, a carrier using a carrier can be suitably used as in the biological reaction section. The carrier used may be the same or different from that used in the biological reaction section. The air diffuser arranged at the bottom of the filtration unit does not discharge air bubbles in the normal state, maintains the carrier in a stationary state, and maintains an environment that facilitates filtration. In order to remove the thickly deposited biofilm, air bubbles are periodically discharged to agitate the carrier to separate the biofilm from the carrier. It is preferable that the separated biofilm is transferred to the anaerobic treatment chamber or the sedimentation separation chamber of the single treatment septic tank by the washing and drainage transfer pipe.

The advection tube transfers treated water from the septic tank to the biological reaction section. Treated water from the septic tank is treated water immediately before flowing into the disinfection chamber. Specifically, it is preferable to extract treated water from the contact aeration chamber or sedimentation chamber of the single treatment septic tank, and to transfer the treated water to the biological reaction section. When a flow control tank is provided on the upstream side of the biological reaction section, the treated water from the single treatment / purification tank is once transferred to the flow control tank and then to the biological reaction section.

The drainage washing transfer pipe transfers the treated water, which has washed the filtration section of the combined treatment apparatus, to the anaerobic treatment section or the sedimentation separation chamber of the single treatment septic tank. Transfer treated water rich in membranes.

The return pipe is for returning sewage downstream of the filtration section to the disinfection chamber of the single treatment septic tank, and the returned treated water is subjected to a sterilization treatment and discharged to the outside of the system.

The combined treatment device may include a flow control tank upstream of the biological reaction unit, and may temporarily store the treated water flowing into the combined treatment device in the flow control tank and then flow the treated water into the biological reaction unit from there. Thereby, stable purification processing can be performed.

First Embodiment FIG. 1 shows a combined treatment / purification tank in which a combined treatment / conversion device is connected to a single treatment / purification tank by piping, and (a) is a plan view.
(B) is a longitudinal side view.

The single treatment septic tank 1 is an existing single treatment septic tank. From the upstream side, a first inlet 2, an anaerobic treatment chamber (sedimentation separation chamber) 3, a contact aeration chamber 4, a sedimentation chamber 5, a disinfection tank 6, A first outlet 10 is provided.

The combined treatment apparatus 20 is provided with a biological filtration tank 22 through which treated water flows in from the second inlet 21. The biological filtration tank 22 prevents the carrier from passing above and below the tank and allows the treated water to pass through. The biological reaction part 26 is constituted by the upper carrier layer formed by installing the water-passing members 23, 24, 25 and filling a carrier between the water-passing members 23, 24.
The filtration section 27 is constituted by the lower carrier layer formed by emphasizing the carrier in between. The air diffusion member 28 provided below the biological reaction unit 26 is used for performing aerobic treatment, and always discharges air bubbles.
The air diffuser member 29 provided below is used for cleaning to remove a biofilm, and discharge air bubbles once a day for about 1 to 30 minutes.

Downstream of the filtration unit 27, a treated water storage unit 30 is provided, and the treated water storage unit 30 has a second outlet 3
1 is provided, and the washing drainage transfer pipe 32 is opened at the bottom.

The pipe connection between the single treatment septic tank 1 and the merger treatment apparatus 20 is performed by connecting the sedimentation chamber 5 and the second inflow port 21 by the advection pipe 33, and the treated water in the sedimentation chamber 5 of the single treatment septic tank 1 is merged. It flows to the biological filtration tank 22 of the device 20. Further, the second outlet 31 and the disinfection chamber 6 are connected by the return pipe 34, and the supernatant of the treated water storage section 30 is transferred to the disinfection chamber 6. And the washing drainage extraction pipe 32 is connected to the transfer pump 3
5 and the anaerobic treatment chamber 3 via the cleaning drainage transfer pipe 36.

Here, the flow of sewage (treated water) will be described. Human waste, kitchen wastewater (including disposer wastewater), washbasin wastewater, washing wastewater, bathtub wastewater, etc. (hereinafter referred to as wastewater a) discharged from homes are the first wastewater treatment tank 1
It flows into the anaerobic treatment chamber 2 from the inflow port 2. Anaerobic treatment room 2
Performs the solid-liquid separation of the treated water and the anaerobic treatment, and flows to the contact aeration chamber 4. The contact aeration chamber 4 oxidizes and removes the nutrient substrate of the treated water, and moves to the precipitation chamber 5. The sedimentation chamber 5 separates the solid content of the treated water by sedimentation and transfers the supernatant to the advection tube 3.
By 3, the water is transferred from the second inlet 21 of the combined processing apparatus 20 into the biological filtration tank 22.

The biological filtration tank 22 of the combined processing apparatus 20
The inflowing treated water is first subjected to aerobic treatment by air bubbles from the diffusing member 28 in the biological reaction section 26, and then solid matter while being subjected to aerobic treatment by oxygen carried in from the biological reaction section 26 in the filtration section 27. Is removed, and the water is transferred to the treated water storage unit 30.

The supernatant of the treated water in the treated water storage unit 30 is transferred to the disinfection chamber 6 by the return pipe 34, where it is disinfected and sterilized before being discharged from the first outlet 10.

If the filtration unit 27 of the combined treatment apparatus 20 continuously performs filtration, the biofilm is thickly deposited on the carrier and becomes blocked, so that air bubbles are periodically discharged from the air diffusing member 29 to remove the carrier. To remove the biofilm from the carrier. Then, the detached biofilm is pulled out by the washing drainage pipe 32 by operating the transfer pump 35 and is transferred to the anaerobic treatment chamber 3 through the washing drainage transfer pipe 36.

According to such a combined treatment / purification tank, the single treatment / purification tank 1 can be effectively used to perform a combined treatment of human waste, kitchen drainage, wash sink drainage, washing drainage, and the like.

Second Embodiment FIG. 2 is a view showing a vertical side surface and a pipe of a combined treatment / purification tank according to a second embodiment of the present invention. In this embodiment, a flow control tank 40 is provided integrally with the merged processing apparatus 20 in the merged treatment septic tank of the first embodiment shown in FIG.
In the biological filtration tank 22. The other configuration is the same as that of the first embodiment, and thus the same reference numerals are given and the duplicate description will be omitted.

Bath tub drainage amounts to a large amount of about 200 to 300 liters in a few minutes. Therefore, if it is not possible to ensure a sufficiently large capacity of the biological filtration tank 22 of the combined treatment apparatus 20, the treated water may be discharged with insufficient treatment.

Therefore, in this embodiment, the bath tub drain pipe 4 is configured to drain the bath tub drain with less dirt separately from the drain a.
2 and merged in the middle of the advection pipe 33, flowed into the flow control tank 40 and stored therein, and a suitable amount of treated water was transferred from the flow control tank 40 to the biological filtration tank 22 using the pump 41. Configured.

According to such a combined treatment / purification tank, a stable purification treatment can be performed without deteriorating the processing functions of human waste, kitchen wastewater, washing water and washing wastewater in the single treatment / purification tank 1.

Third Embodiment FIG. 3 is a view showing a vertical side surface and a pipe of a combined treatment / purification tank according to a third embodiment of the present invention. This embodiment has a configuration in which a flow rate adjusting tank provided in a merged processing apparatus in the merged processing purification tank of the second embodiment shown in FIG. 2 is formed separately. The other configuration is the same as that of the second embodiment, so that the same reference numerals are given and the duplicate description will be omitted.

In this embodiment, the flow control tank 40 is
It is formed separately from the merger processing apparatus 20 and is buried underground, and the convection pipe 33 is connected to the third inlet 43 so that the treated water flows in. Then, pipe connection is made so that the treated water stored in the flow rate adjusting tank 40 is transferred by the pump 41 to the second inlet 21 of the combined processing apparatus 20 via the transfer pipe 44.

According to such a septic tank, the merging apparatus 20 can be installed on the ground, and the construction cost can be reduced.

Other Embodiments In such a merged treatment septic tank, when a septic tank is newly installed, a new single treatment septic tank is separately provided, or a new existing single treatment septic tank is used in combination with a combined treatment apparatus. As a result, the combined treatment septic tank can be constructed and newly installed, so that the production efficiency of the single treatment septic tank and the combined treatment septic tank can be increased.

[0037]

According to the present invention, a merged treatment septic tank can be constructed by using an existing single treatment septic tank, so that it is less expensive than disposing of an existing single treatment septic tank and installing a new merged treatment septic tank. This can be realized, and there is no need to dispose of the single treatment septic tank.

Further, by using the disinfecting chamber of the single treatment septic tank, the configuration of the combined treatment apparatus can be simplified.

Further, by providing a separate bathtub drainage pipe, the bathtub drainage which has become unstable because of its large volume compared to other domestic wastewater can be treated directly or only by a combined treatment apparatus. Only the disinfection and sterilization can be performed and the water can be discharged out of the system, and the purification treatment can be stably performed.

Furthermore, if the bath tub drainage is configured to flow directly into the combined treatment apparatus without being passed through the existing single treatment septic tank, or to be discharged directly, or only to be disinfected and sterilized and discharged outside the system, the existing single treatment can be performed. The sludge can be prevented from flowing out without increasing the capacity of the septic tank, and the biofiltration process can be performed efficiently. Therefore, the capacity of the biofiltration tank can be reduced, and the entire system can be downsized. It is possible to do.

Further, when the flow control tank is provided in the merged processing apparatus, a stable purification treatment can be performed. In particular, it is preferable that the merged processing apparatus and the flow control tank are separately connected to each other by piping. For example, installation costs can be reduced by installing the merged processing apparatus on the ground.

Further, according to the present invention, a combined treatment / purification tank can be newly provided by using a new single treatment / purification tank and a combined treatment / purification apparatus, so that the production efficiency of the single treatment / purification tank and the combined treatment / purification tank can be increased.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a merged treatment septic tank in which a merged treatment apparatus according to a first embodiment of the present invention is connected to a single treatment septic tank by piping, (a) is a plan view, and (b) is a vertical side view. It is.

FIG. 2 is a view showing a longitudinal side surface and piping of a combined treatment septic tank according to a second embodiment of the present invention.

FIG. 3 is a view showing a longitudinal side surface and piping of a combined treatment septic tank according to a third embodiment of the present invention.

FIG. 4 is a vertical sectional side view showing a conventional single-contact treatment / separation tank of the separation contact aeration system.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Separate treatment septic tank, 3 ... Anaerobic treatment chamber, 4 ... Contact aeration chamber, 5 ... Sedimentation chamber, 6 ... Disinfection tank, 20 ... Combined treatment apparatus,
22: biological filtration tank, 26: biological reaction section, 27: filtration section.

Claims (2)

[Claims] 1. A merger treatment apparatus comprising a merger treatment septic tank capable of jointly treating sewage by connecting a pipe to a single treatment septic tank, a biological reaction section for performing aerobic treatment, and the biological reaction section. A filtration unit for filtering treated water on the downstream side of the tank, and a pipe connection to the single treatment septic tank is provided for advection of the treated water immediately before flowing into the disinfection chamber of the single treatment septic tank to the biological reaction unit. A pipe, a washing and drainage transfer pipe for transferring the treated water after washing the filtration section to the anaerobic treatment section or the sedimentation separation chamber of the single treatment septic tank, and a return pipe for returning the sewage downstream of the filtration section to the disinfection chamber of the single treatment septic tank. A merging processing apparatus characterized in that the processing is performed by: 2. The method according to claim 1, further comprising a flow control tank upstream of the biological reaction section, wherein treated water from the single treatment / purification tank flows into the biological reaction section via the flow control tank. Characterized merger processing equipment.