JP2839736B2 - Wastewater treatment equipment for high-rise buildings - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wastewater supplied to a facility such as a boiler or an air conditioner, or used as drinking water, which fulfills its intended purpose, by removing impurities in the wastewater. The present invention relates to a wastewater treatment device for a high-rise building that is recycled.

[0002]

2. Description of the Related Art Conventionally, in a wastewater treatment apparatus used in a high-rise building, wastewater having been used for a purpose is once collected in a storage tank provided in a basement or the like, and then drained by an activated sludge method or a filtration separation method. The impurities in the water are removed to turn the wastewater into wastewater, and the wastewater is returned to each floor and used again.

[0003]

However, when the activated sludge method is used for removing impurities, the air is mixed with the collected wastewater in an aeration tank and then aerated. A solid-liquid separation device such as a sedimentation tank for separating sludge and water is required, and a large installation space for a sedimentation tank and other devices for treating wastewater is required.

Although the installation space can be reduced by using the aeration tank and the sedimentation tank together, new wastewater cannot be treated until the sludge settles, and the amount of wastewater treated per hour is reduced by half.

[0005] When the filtration separation method is used, the wastewater to be treated is passed through a filter medium such as a hollow fiber membrane so that the wastewater to be treated can pass through a filtration medium.
It is necessary to apply a pressure of about 3 to 5 kg / cm ² to the drainage using a device such as a pressure pump.

[0006] Furthermore, it is necessary to recirculate the intermediate water produced by the treatment to each floor again. The higher the building, the longer the circulation path of the intermediate water and the greater the power required for the circulation. And

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has reduced the installation space of equipment for drainage treatment of a high-rise building and the power of wastewater purification treatment, and furthermore has been achieved. The aim is to reduce the power required to recirculate the water.

[0008]

In order to achieve the above object, a high-rise building wastewater treatment apparatus according to the present invention divides a high-rise building into a plurality of vertical sections, and stores drainage in each section. A storage tank to be provided, and an aeration tank filled with a filter material therein, and each storage tank is connected via a pipe to an aeration tank installed in a section below the section where the storage tank is installed, Along with a compressor that communicates in the middle of this pipe and feeds air into the pipe, the drainage is circulated, and the filter medium in the aeration tank is subjected to a pressure difference according to a height difference to process the drainage, and a middle water outlet is provided on the downstream side. It is characterized in that treated water is distributed to other sections.

In the present invention, a high-rise building includes a so-called high-rise building.

[0010]

The high-rise building is divided into predetermined height units, for example, 10 floor units, and the wastewater generated in one section is collected in a storage tank below the section.

The collected wastewater is sent via a pipe to an aeration tank installed in a section below the above section. At this time, a water pressure due to a vertical difference between the storage tank and the aeration tank is generated with respect to the wastewater in the aeration tank, and the wastewater is passed through the filter medium by the water pressure to separate sludge. Generated.

In the wastewater sent to the aeration tank, air is sent from a compressor during the passage of the pipe, and the air is mixed in a bubble state and aerated. The generated medium water is supplied to a section where the aeration tank is installed, a section below the section, and the like.

[0013]

An embodiment of the present invention will be described with reference to the drawings.
In the present embodiment, as shown in FIG. 1, the high-rise building 12 is divided into predetermined height units, for example, 10-story units.
A storage tank H and an aeration tank B are installed in each section.

First, the configuration of an apparatus for treating wastewater generated from the J-th section from the top will be described. As shown in FIG. 2, a storage tank H is installed in the J-th section from the top. Is connected to the (J + 1) -th section. In the storage tank H, waste water 4 sent by a drain pipe 3 is stored. The storage tank H and the aeration tank B are connected by a pipe 5.
In the middle of the pipe 5, a compressor 6 for sending air into the pipe 5 is communicated. Further, the pipe 5 has a position above the switching valve 5a,
One end of the bypass pipe 7 is connected via another switching valve 7a, and the other end of the bypass pipe 7 is connected to another storage tank H provided in the (J + 1) th section.

The aeration tank B is filled with a filter medium 2a made of a hollow fiber membrane having a space above and below and having a horizontal filtration direction, and a space below the filter medium 2a (hereinafter referred to as a lower space). A lower end opening of the pipe 5 is disposed in the space 2b, and a space above the filter medium 2a (hereinafter referred to as an upper chamber).
2d and the Jth storage tank H are connected by a return pipe 8a, and the drainage of the lower chamber 2b can be returned to the storage tank H by a bubble pump 8b communicating with the return pipe 8a. A switching valve 8c for opening and closing the pipe 8a is provided in the middle of the reflux pipe 8a.

A sludge reservoir 2c for sedimenting the sludge is formed below the lower chamber 2b, and a sewer pipe 9 for removing the sedimented sludge is connected to the sludge reservoir 2c.
In the aeration tank B, the filter medium 2a communicates with one end of the middle water pipe 10, and the other end of the middle water pipe 10 communicates with the (J + 2) -th section.

In the above-described configuration, each storage tank H is connected to the aeration tank B installed in a section one lower than the section where the storage tank H is installed. As shown in FIG. 1, devices for treating wastewater in each section are sequentially arranged from the top section. In addition, the middle water generated in the aeration tank B in the lowermost section is supplied to the lowermost section. The wastewater generated in the second section is also supplied to the first section above it.

In the drainage device having the above configuration, the drainage 4 from the J-th section is collected in the storage tank H provided in the J-th section via the drain pipe 3 and stored in the storage tank H. The drainage water 4 stored in the storage tank H is further passed through the pipe 5 to the aeration tank B installed in the (J + 1) -th section below it.
To the lower chamber 2b.

At this time, the wastewater 4 is sent to the lower chamber 2b while being aerated while air bubbles are mixed in from the compressor 6 while passing through the pipe 5, and the organic matter in the wastewater 4 is gelatinized by bacteria or the like. Sludge.

Further, the drainage water 4 sent to the lower chamber 2b of the aeration tank B passes through the hollow fiber membrane as the filter medium 2a due to the water pressure caused by the vertical difference between the storage tank H and the lower chamber 2b. Thus, solid-liquid separation for separating water and sludge is performed. The intermediate water is a section one below the section where the aeration tank B is installed from the filter medium 2a via the intermediate water pipe 10 (J + 2).
Supplied in the second compartment.

The wastewater 4 and a part of the sludge (activated sludge) which have been sent to the lower chamber 2b of the aeration tank B in the (J + 1) th section and have not passed through the hollow fiber membrane 2a are removed by the bubble pump 8
By b, the water is returned to the storage tank H installed in the upper J-th section via the reflux pipe 8a.

By repeating the above-mentioned treatment, excess sludge in the lower chamber 2b is settled in the sludge pool 2c, and the settled excess sludge is appropriately removed through the sewage pipe 9. Here, when maintenance of the aeration tank B is performed, such as performing back washing of the hollow fiber membrane 2a in the aeration tank B, the switching valve 5a of the pipe 5 and the switching valve 8c of the reflux pipe 8a are closed and By opening the switching valve 7a of the bypass pipe 7, the piping 5 from the J-th storage tank H is opened.
Is temporarily sent to the storage tank H of the (J + 1) -th section, and the (J + 2) -th aeration tank thereunder is passed through the storage tank H of the (J + 1) -th section. B is processed.

As described above, in order to allow the drainage 4 to pass through the hollow fiber membrane that is the filter medium 2a, the drainage 4 is supplied from the upper section without the need for a power source such as a pressure pump. The hollow fiber membrane, which is the filter medium 2a, is passed by the water pressure caused by gravity, and aeration is performed when the pipe 5 falls in the pipe 5, thus performing aeration and filtration separation.

In order to supply the middle water formed through the hollow fiber membrane 2a to a section below the section where the aeration tank B is installed, the middle water is supplied from the basement of the building 12 to the top. It does not require power such as sending it to a floor or the like via a long return path, and furthermore, the length of the return path of the intermediate water does not increase even if the building 12 becomes high-rise. Power is greatly reduced. In particular, in this embodiment, since the medium water is mainly supplied to the lower section, the power for supplying is further reduced.

In the present embodiment, the storage tank H is connected to the aeration tank B installed in the lower section, but it is installed in the lower section for the purpose of increasing the water pressure. May be connected to the aeration tank B or the like.

The supply destination of the wastewater is not limited to the section immediately below the section where the aeration tank B for producing the wastewater is installed.
It may be supplied to the section where the aeration tank B is installed, or may be supplied to the next upper section or the like.

Further, in this embodiment, a hollow fiber membrane is used as the filter medium 2a, but another known filter medium may be used. Furthermore, since the filling position of the filter medium 2a in the aeration tank B is an example, the filter medium 2a is set so that the filtration direction is up and down.
, And the drainage 4 may be passed from the top to the bottom through the filter medium 2a, or another arrangement may be adopted.

[0028]

As described above, the wastewater treatment apparatus for a high-rise building according to the present invention utilizes the gravity to cause the wastewater to pass through the filtering material in the aeration tank, thereby providing the power of a pressure pump or the like. There is an effect that it is not necessary.

Also, aeration and filtration / separation can be performed in one tank without reducing the wastewater treatment capacity, and since the wastewater is separately treated in each of the upper and lower compartments, the installation space for the wastewater treatment device is provided. There is also an effect that only a small amount is required.

Furthermore, the generated intermediate water may be supplied to the upper and lower sections of the section where the aeration tank that generated the intermediate water is installed, regardless of the height of the high-rise building. There is also an effect that power for supply is greatly reduced.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a relationship between a storage tank and an aeration tank arranged in each section in a high-rise building.

FIG. 2 is a schematic diagram showing a connection relationship between a storage tank and an aeration tank installed in J-th and (J + 1) -th sections.

[Explanation of symbols]

 H, Storage tank B, Aeration tank 2a Filter material 4 Drainage 5 Piping

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takashi Tomozawa 1-25-1, Nishishinjuku, Shinjuku-ku, Tokyo Taisei Corporation (58) Field surveyed (Int. Cl. ⁶ , DB name) E03C 1 / 122 C02F 1/74 C02F 3/12

Claims (1)

(57) [Claims] 1. A high-rise building is divided vertically into a plurality of sections, and a storage tank for storing wastewater and an aeration tank filled with a filter material therein are provided for each section, and each storage tank is Attached via a pipe to an aeration tank installed in a section below the section where the storage tank was installed, and provided with a compressor that is communicated in the middle of this pipe and sends air into the pipe, and circulates wastewater, Applying the pressure due to the height difference to the filter material of the aeration tank, treats the waste water, and faces the middle water outlet on the downstream side,
A wastewater treatment device for a high-rise building, wherein the treated water is distributed to another section.