JP2002066581A - Combined treatment device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combined treatment device which solves the disposal problem of a single treatment septic tank and can realize the processings of human excrement waste water and domestic waste from miscellaneous sources more inexpensively than that when a new combined treatment septic tank is purchased by effectively using the existing single treatment septic tank. SOLUTION: The device 100 purifies human excrement and domestic waste such as kitchen waste water, washing waste water and washstand/bathroom waste water by connecting a pretreating tank 10 where a flow rate adjusting mechanism (pump) 15 is arranged on the upstream side of the existing single treatment septic tank 20 by using the single treatment septic tank 20 having an aerobic processing part 23. Human excrement piping and domestic waste piping are connected to the pretreating tank 10 and an anaerobic processing is performed. Advection quantity to the single treatment septic tank 20 is controlled. A waste water returning pipe 53 is piping-connected to the first pretreating tank 10 and the single treatment septic tank 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combined treatment apparatus capable of purifying human waste and household wastewater such as kitchen wastewater, laundry wastewater, washbasin and bathroom wastewater.

[0002]

2. Description of the Related Art Conventionally, a single treatment septic tank has been used as an apparatus for purifying human waste. FIG. 3 is a schematic cross-sectional view showing a single treatment septic tank of a separate contact aeration type. Human waste flows into the sedimentation separation chamber 3 from the inflow port 2, is subjected to solid-liquid separation and anaerobic treatment, and is transferred to the contact aeration chamber 4.
In the contact aeration chamber 4, the transferred water is agitated by air bubbles diffused from the diffuser 7 and contacts the contact material 8, whereby the nutrient substrate is gradually oxidized and removed. If the contact material 8 is continuously stirred, the biofilm is thickly deposited and clogged. Therefore, the biofilm is peeled off by periodically discharging air bubbles from the backwash tube 9. After the water that has passed through the contact aeration chamber 4 is subjected to sedimentation and separation of solids in the sedimentation chamber 5, the separated supernatant liquid is transferred to the disinfection chamber 6, sterilized, and subjected to the outlet 1.
It is configured to be discharged from 0. In addition, although the contact aeration method was shown as an aerobic treatment method, there is also an aeration method using only air stirring by dispersing air bubbles.

[0003]

However, the single treatment septic tank has a small capacity and the type of water to be treated is limited to human waste, and cannot treat household wastewater such as kitchen wastewater, washing wastewater, washbasin wastewater and bathroom wastewater. And has the subject.
This problem can be solved by removing the existing single treatment septic tank and installing a new merged treatment septic tank. However, not only is the construction cost high, but also many single treatment septic tanks are made of FRP. Therefore, a new problem has arisen regarding the disposal of the single-use septic tank that is no longer required. In addition, when burying a single treatment septic tank without excavating it, there is no problem with disposal, but another problem arises that land cannot be effectively used.

[0004] The present invention has been made in view of the above problems, and solves the disposal problem of the single treatment septic tank by effectively utilizing the existing single treatment septic tank.
Provided is a merger treatment apparatus that enables human waste treatment and household wastewater treatment at a lower cost than purchasing a new merger treatment septic tank.

[0005]

According to the present invention, a pretreatment tank is connected to an upstream side of a single treatment septic tank using an existing single treatment septic tank having at least an aerobic treatment section. Thus, the waste water and kitchen waste water, laundry waste water, washing water and bathroom waste water and other wastewater waste can be purified. Pretreatment tanks are for human waste drainage piping, kitchen wastewater,
Household drainage pipes such as washing drainage, washbasin and bathroom drainage are connected, and a flow rate adjustment mechanism that adjusts the flow rate to the single treatment septic tank installed downstream is provided. To perform reliable aerobic treatment. Further, a filter bed is formed below the lowest water level of the pretreatment tank. Further, the pretreatment tank is provided with a return pipe connected to the single treatment septic tank for returning sewage from the single treatment septic tank, and configured to return the sewage in the single treatment septic tank to the pretreatment tank.

[0006]

Embodiments of the present invention will now be described with reference to the drawings. The single treatment septic tank constituting the combined treatment apparatus of the present invention may have at least an aerobic treatment section, and may have an anaerobic treatment section and an aerobic treatment section. Specifically, as described in the related art, a device having an inflow port and an outflow port, and provided with a sedimentation separation chamber, a contact aeration chamber, a sedimentation chamber, and a disinfection chamber from the upstream side is preferably used. be able to.

A pretreatment tank having a flow rate adjusting mechanism according to the present invention is disposed upstream of an existing single treatment septic tank, and a mechanism for adjusting a transfer rate when transferring wastewater to a downstream side, for example, pumping means such as a pump. The amount of pumped water is adjusted to adjust the flow rate of wastewater to the single treatment septic tank. As the pump, an air lift pump is preferably used.

The pretreatment tank is configured to receive household wastewater and household wastewater such as kitchen wastewater, laundry wastewater, and washroom / bathroom wastewater. In the pretreatment tank, the wastewater is subjected to anaerobic treatment on a filter bed. In addition, aerobic treatment is performed in the single purification treatment tank whose flow rate has been adjusted.

Further, a pipe for conveying sewage of the single treatment septic tank is connected to the pretreatment tank and the single treatment septic tank.
The sewage in the single treatment septic tank is returned to the pretreatment tank, subjected to anaerobic treatment again, and aerobic treatment is performed in the single treatment septic tank. In addition, when the nitrification liquid generated by the aerobic treatment in the single treatment septic tank is returned to the pretreatment tank, a denitrification reaction occurs in an anaerobic state and denitrification occurs.

An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 are explanatory views of the configuration of a merged processing apparatus 100 showing one embodiment of the present invention. FIG. 1 shows a schematic side sectional view, and FIG. 2 shows a schematic plan view.

The combined treatment apparatus 100 includes a first treatment tank 10 as a pretreatment tank into which human wastewater a and kitchen wastewater, laundry wastewater, and other household wastewater b such as washbasin and bathroom wastewater are introduced, and a first treatment tank. A second processing tank 20 is provided downstream of the tank 10. The second treatment tank 20 uses an existing single treatment purification tank. The first treatment tank 10 connects the inflow port 11 to a human waste pipe and a household drain pipe. The outflow port 13 is connected to the inflow port 21 of the second processing tank 20 via a connection pipe 55. The first processing tank 10 is provided with a pump 15, and transfers the wastewater pumped up by the pump 15 to the second processing tank 20. In addition, although the water surface of the first treatment tank is moved up and down by the pump 15, a filter bed may be formed with a filler below the lowest water level (LWL). Filler (filter material)
Examples of the shape include a net-like cylindrical shape, a skeleton-like spherical shape, a plate-like loofah-like shape, a small cylindrical shape, and a corrugated shape.

An existing one is used as the second processing tank 20. The existing single treatment septic tank has an internal structure at least including a contact chamber, a sedimentation chamber, and a disinfection chamber.
The single treatment septic tank shown in the figure has an inlet 21 from the upstream side,
A sedimentation separation chamber 22, a contact aeration chamber 23, a sedimentation chamber 24, a disinfection chamber 25, and an outlet 26 are provided. The second treatment tank 20 is provided with a return pipe 53 for returning the wastewater from the second treatment tank 20 to the first treatment tank 10 and connected to the first treatment tank 10. The sludge that accumulates at the bottom of the second processing tank 20 is regularly extracted by unillustrated extraction means. In addition, a single treatment septic tank is used in the sedimentation separation chamber 2
2 is provided in the sedimentation separation chamber 22,
If a new aerobic treatment chamber (aeration chamber) is installed by supplying air and supplying air, the purification capacity can be further improved.

Next, the flow of water will be described. Manure wastewater a and household wastewater b discharged from the home flow into the first treatment tank 10 from the inflow port 11. Therefore, removal of impurities and anaerobic decomposition are performed. And the pump 15
The wastewater in the first processing tank 10 is pumped up by the operation of, and flows into the second processing tank 20 from the outflow port 13 through the first connection pipe 51.

The wastewater whose transfer flow rate is adjusted by the pump 15 flows into the sedimentation separation chamber 22 from the inlet 21 of the second processing tank (single processing purification tank) 20. Then, aerobic treatment (that is, oxidation and decomposition of organic substances and nitrification of ammonia) is performed in the precipitation separation chamber 22 by the air diffuser 27. Then, the aerobic treatment is similarly performed in the contact aeration chamber 23. The sewage that has passed through the contact aeration chamber 23 performs sedimentation and separation of SS (floating substances) in the sedimentation chamber 24,
After being sterilized in step 5, it is discharged from the outlet 26.

[0015] Since the merged treatment apparatus configured as described above uses the existing single treatment septic tank as the second treatment tank, the problem of discarding the single treatment septic tank can be solved, and the first flow rate adjustment is performed. Since the treatment volume of the second treatment tank (single treatment septic tank) is adjusted by the treatment tank, a large amount of human waste and household wastewater will be merged even if an existing single treatment septic tank with a small capacity is used as the second treatment tank. Processing can be performed.

[0016]

According to the present invention, by simply adding the first treatment tank, it is possible to use the existing single treatment septic tank to carry out the combined treatment of human waste and household wastewater, and to dispose of the single treatment septic tank to obtain a new treatment. Merger treatment can be performed at a lower cost than when a merger treatment septic tank is installed, and the disposal problem of a single treatment septic tank can be solved.

Further, by providing the first treatment tank with a flow rate adjusting mechanism, the amount of wastewater flowing into the second treatment tank (existing single treatment / purification tank) disposed downstream can be regulated, and overload can be reduced. I can't call it. In addition, since the second treatment tank (existing single treatment / purification tank) is provided with a pipe for returning the wastewater to the first treatment tank, the purification treatment is promoted, and denitrification becomes possible. Further, when a filter bed is provided in the first processing tank and a sedimentation separation chamber is provided in the second processing tank, a diffusing means is provided to convert the sedimentation separation chamber into an aerobic processing chamber. Thereby, more advanced treated water can be obtained.

As described above, according to the combined treatment and purification apparatus of the present invention, the anaerobic treatment in the first treatment tank and the sewage pretreated by flow rate adjustment flow into the existing single treatment / purification tank. The aerobic treatment in the septic tank can be executed reliably, and the treated water discharged from the device is highly advanced (BOD2
(0 mg / L or less) The treated water quality can be secured.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view of a merge processing apparatus showing an embodiment of the present invention.

FIG. 2 is a schematic plan view of the merge processing apparatus showing an embodiment of the present invention.

FIG. 3 is an explanatory side view showing a conventional example of a single treatment septic tank of a separate contact aeration type.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 1st processing tank 11 Inflow port 100 Merger processing apparatus 13 Outflow port 14 Filter bed 15 Pump 20 2nd processing tank (single processing purification tank) 21 Inflow port 22 Precipitation separation chamber 23 Contact aeration chamber 24 Precipitation chamber 25 Disinfection Room 26 Outlet 27 Air diffuser 51 Connecting pipe 53 Return pipe 100 Merger processing equipment

Claims (3)

[Claims] 1. A combined treatment apparatus which enables purification treatment of household wastewater and household wastewater such as kitchen wastewater, laundry wastewater, washbasin and bathroom wastewater by connecting a pretreatment tank to a single treatment wastewater treatment tank. The pretreatment tank includes a flow rate adjustment mechanism that performs adjustment of a downstream flow rate, the single treatment / purification tank has at least an aerobic treatment unit, and the pretreatment tank is a wastewater drainage pipe, and a kitchen wastewater. A wastewater treatment pipe for washing, bathroom, bathroom, etc., and a pretreatment tank connected to the upstream side of the septic tank. 2. The combined treatment apparatus according to claim 1, wherein a filter bed is formed below the lowest water level (LWL) in the pretreatment tank. 3. The pretreatment tank is provided with a return pipe connected to the single treatment septic tank for returning sewage in the single treatment septic tank, and configured to return the sewage in the single treatment septic tank to the pretreatment tank. 3. The merge processing apparatus according to 1 or 2.