JP4584098B2 - Wastewater treatment equipment - Google Patents

Description

  The present invention relates to a wastewater treatment apparatus for treating wastewater of sanitary equipment discharged from a general household.

The merged treatment septic tank is widely used because wastewater from a plurality of sanitary equipment is integrated into a single drainage path and connected to a wastewater treatment tank for wastewater treatment.
In this one drainage route, there is a case where a wastewater treatment device that transports wastewater from a sanitary equipment device through a drainage horizontal branch pipe and collects this wastewater in a drainage header as shown in Patent Document 1 may be used.
Patent Document 2 discloses a method of treating wastewater having a high pollutant concentration and wastewater having a low pollutant concentration in a single wastewater treatment tank.
JP 2002-106011 A JP 2002-336883 A

In recent years, the administrative agency has been trying to improve the sanitary environment by replacing the existing single-treatment septic tank that treats only toilet wastewater with the merged septic tank described above.
However, there are many cases where there is no space for refilling the merged treatment septic tank, which has a capacity 2 to 3 times that of the single treatment septic tank, and a space for laying drain pipes from sanitary equipment other than toilets. It was a hindrance to improvement.

  In view of the above, an object of the present invention is to provide a wastewater treatment apparatus having excellent space saving characteristics.

(1) The present invention comprises a drainage horizontal branch pipe connected to each of a plurality of sanitary equipment and two drainage headers, and one drainage header A discharges wastewater containing a large amount of solid matter. Connected to the drainage side branch pipe connected to the drainage side branch pipe connected to the drainage side branch pipe connected to the sanitary equipment that discharges wastewater having less solid matter than the drainage flowing into the drainage header A The two drainage headers are connected to one wastewater treatment tank downstream, and a basic through-hole portion downstream of each drainage header is provided in the middle of the flow path between the two drainage headers and the wastewater treatment tank. It is a wastewater treatment apparatus which is provided and has an identification mark which identifies which drainage header is the downstream side of which drainage header .
(2) In item (1), the sanitary equipment that discharges solid wastewater is a toilet or a kitchen sink, and the sanitary equipment that discharges wastewater with less solids is a washbasin or laundry Wastewater treatment equipment that is a machine or bathroom.
(3) In the item (2), the waste water treatment apparatus wherein the waste water from the kitchen sink includes a disposer waste water.
(4) The wastewater treatment apparatus according to any one of (1) to (3) , wherein there is one discharge path from the wastewater treatment tank.

ADVANTAGE OF THE INVENTION According to this invention, the waste water treatment system excellent in the space-saving property suitable for the refilling to a merged process septic tank and laying of the drain pipe from a sanitation equipment can be provided.
Moreover, in this invention, since the foundation penetration part has the identification mark which identifies which of the two drainage headers is the downstream side of the drainage header, the connection between the two drainage headers and the foundation penetration part You can prevent mistakes.

The sanitary equipment described in the present invention is not particularly limited as long as it is generally used at home, and specifically includes toilet bowls, kitchen sinks, washstands, washing machines, bathrooms, and the like. .
In addition, sanitary equipment that discharges wastewater containing a large amount of solids includes toilets, kitchen sinks, etc. In particular, kitchen sinks are equipped with disposers that have been installed in recent years. Large amount.
Sanitary equipment that discharges wastewater with low solids includes a wash basin, a washing machine, and a bathroom.

The drainage header described in the present invention is installed on the ground, and drainage containing a large amount of solid matter is introduced into one drainage header A, and wastewater containing little solid matter is introduced into the other drainage header B. The size of the drainage header is not particularly limited, but needs to be stored in the space under the floor.
Moreover, it is preferable that the drainage header can be inspected by securing a storage space under the floor and removing a lid or the like from the inside.

The material of the drainage header is not particularly limited, but is preferably one that does not corrode, and it is preferable to use a rust-proof metal or a synthetic resin molded product.
Moreover, it is preferable to provide an inspection port or an inspection window at the top of the drainage header, and it is preferable that the inside of the drainage header can be inspected and cleaned as necessary.

The drainage horizontal branch pipe described in the present invention communicates the sanitary equipment and the drainage header, and can be appropriately used as long as it forms a drainage channel and does not corrode.
In the middle, pipe separation, integration, bending using an elbow, or the like may be performed.
Furthermore, the drainage horizontal branch pipe may be crossed with other drainage horizontal branch pipes to ensure a drainage gradient, and even if such a pipe is installed, it is a ground work. Compared to the burial operation, the operation can be performed much more quickly and easily.

  As the waste water treatment tank described in the present invention, a commonly used septic tank can be used. Moreover, since it is separated into wastewater with different solids content, the load on the wastewater treatment tank is reduced, a more compact wastewater treatment tank can be used, and a space for embedding the wastewater treatment tank can be secured. It will be easy.

The flow path between the drainage header and the wastewater treatment tank may be directly connected to the pipe, but it is preferable to provide a basic penetration part in a part where the pipe is hidden from the ground to the underground.
Moreover, it is preferable to provide an identification mark so that the piping to be connected is connected to the basic penetration part. As the identification mark, a difference in color, a difference in shape, a difference in characters in various languages, or the like may be used. it can.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is an example of a wastewater treatment apparatus according to the present invention. Wastewater discharged from the toilet 2 and the kitchen sink 3 installed in the detached house 7 passes through each drainage lateral branch pipe 8 laid in the space under the floor, and is also a drainage header laid on the ground under the floor. Flow into 1a. On the other hand, the sewage discharged from the wash basin 4, the washing machine 5, and the bathroom 6 also flows into the drainage header 1 b through the drainage side branch pipes 8.

The drainage from the toilet 2 contains a lot of solids such as stool and toilet paper, and the drainage from the kitchen sink 3 contains a lot of solids such as vegetable scraps, which is more solid than the drainage from other sanitary equipment. There are many things included.
In addition, the wastewater from the kitchen sink 3 may be mixed with garbage crushed by the disposer, and in this case, the proportion of the solid matter further increases.

  Each sanitary equipment installed in the detached house 7 has a different installation position for each house. For this reason, when the drainage path from each sanitary equipment is made into two systems, the drainage path often intersects. If this drainage path is laid outside the building, it will be a pipe crossing in the ground, so the pipe must be leveled, and a water gradient is required to connect to the wastewater treatment tank 10. The waste water treatment tank 10 will be buried deeply, and workability will deteriorate. However, according to the present embodiment, as shown in FIG. 2, even if each drainage horizontal branch pipe 8 laid in the space under the floor intersects, the ground penetration portion 9a, 9b (see FIG. 1) is ground. Since it goes inside, it is not necessary to bury the waste water treatment tank 10 deeply.

Drainage from the drainage header 1a flows into the wastewater treatment tank 10 through the base penetration part 9a, and similarly drainage from the drainage header 1b flows into the drainage treatment tank 10 through the foundation penetration part 9b.
The drainage headers 1a and 1b are each provided with an inspection port 19 at the top thereof.

  In wastewater treatment, when installing a septic tank, the contractor and construction period may differ between the building and the building. For this reason, when there are two drainage paths, the foundation penetration part 9a and the drainage treatment tank connection port 11a must be connected, but the foundation penetration part 9a and the drainage treatment tank connection port 11b are connected by mistake. There is a fear. Therefore, it is desirable to identify each of them. In this embodiment, identification is performed by characters (A and A, B and B). At this time, it is preferable to put the same identification on the drainage header. In addition, it is also effective for preventing connection mistakes and checking after use to display the drainage header 1a such as “only for toilet and kitchen”.

  FIG. 3 shows another embodiment of the waste water treatment tank apparatus according to the present invention. The drainage headers 1a and 1b are preferably laid in one place in consideration of subsequent maintenance and inspection, but can be laid separately if it cannot be laid in one place on construction. . Moreover, in order to shorten the distance of the drainage horizontal branch pipe 8 as much as possible, the drainage header may be provided in different places.

  FIG. 4 shows an embodiment of the waste water treatment tank according to the present invention. Wastewater containing a large amount of solid matter flowing in from the wastewater treatment tank connection port 11 a is separated into solid matter and liquid in the solid-liquid separation tank 12. The solid matter is anaerobically treated to form sludge and scum. At this time, since peak loads such as bathtub drainage and washing drainage do not pass through the solid-liquid separation tank 12, the inside of the tank is not stirred and scumming is promoted. Therefore, since the sludge concentration rate is kept high, the sludge storage capacity can be set small.

On the other hand, the wastewater flowing in from the wastewater treatment tank connection port 11 b with relatively little solid matter does not pass through the solid-liquid separation tank 12 and flows into the anaerobic treatment tank 13. Here, it is mixed with the outflow water from the solid-liquid separation tank 12, subjected to anaerobic treatment, and flows out to the aerobic treatment tank 14. Since the anaerobic treatment tank 13 is subjected to a peak load, it is preferable to add a flow rate adjusting function.
Further, the upper part of the anaerobic treatment tank 13 may be aerobic and sludge digested according to the inflow load.

  The treated water that has been aerobically treated in the aerobic treatment tank 14 is separated from a finer solid in the solid-liquid separation tank 15, disinfected in the disinfection tank 16, and then discharged from the outlet 17. The solid matter separated in the solid-liquid separation tank 15 is returned to the upstream solid-liquid separation tank 12 by the circulation device 18. At this time, since the nitrification liquid is also returned, a denitrification reaction occurs in the solid-liquid separation tank 12.

It is a schematic plan view of the waste water treatment apparatus which is one Example of this invention. It is an expansion perspective view of the drainage header used for the present invention. It is a schematic plan view of the waste water treatment apparatus which is the other Example of this invention. It is a schematic perspective plan view which shows the waste water treatment tank used for this invention.

Explanation of symbols

1a, 1b ... drainage header, 2 ... toilet bowl, 3 ... kitchen sink, 4 ... wash basin, 5 ... washing machine, 6 ... bathroom, 7 ... detached house, 8 ... drainage horizontal branch pipe, 9a, 9b ... foundation penetration part DESCRIPTION OF SYMBOLS 10 ... Waste water treatment tank, 11a, 11b ... Waste water treatment tank connection port, 12 ... Solid-liquid separation tank, 13 ... Anaerobic treatment tank, 14 ... Aerobic treatment tank, 15 ... Solid-liquid separation tank, 16 ... Disinfection tank, 17 ... outlet, 18 ... circulator, 19 ... inspection port

Claims (4)

The drainage horizontal pipe provided with a drainage horizontal branch pipe connected to each of a plurality of sanitary equipment and two drainage headers, and one drainage header A is connected to a sanitary equipment that discharges wastewater containing a large amount of solid matter. is connected to the branch pipe, the other drainage header B, is connected to the drainage lateral branch pipe connected to the sanitary equipment for discharging wastewater solids is less than the waste water flowing into the water discharge header a, the two drainage header Is connected to one wastewater treatment tank downstream, and in the middle of the flow path between the two wastewater headers and the wastewater treatment tank, a foundation penetration part downstream of each drainage header is provided. Is a wastewater treatment apparatus having an identification mark that identifies which drainage header is downstream .   In Claim 1, the sanitary equipment which discharges wastewater containing a large amount of solids is a toilet bowl or a kitchen sink, and the sanitary equipment which discharges wastewater containing less solids than that is a washstand, a washing machine or a bathroom. Some wastewater treatment equipment. The waste water treatment apparatus according to claim 2, wherein the waste water from the kitchen sink includes a disposer waste water. The wastewater treatment apparatus according to any one of claims 1 to 3 , wherein there is one discharge path from the wastewater treatment tank.

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