JPH07299336A - Purifying apparatus - Google Patents

Abstract

PURPOSE:To enhance the packing area ratio of a filter membrane apparatus by providing a hollow membrane type filter device to the planar blank part of the purifying chamber provided to a flat membrane type filter apparatus in a suspended state. CONSTITUTION:A flat membrane type filter device 3 constituting a part of a filter membrane device G is arranged above an air diffusion device 2. A hollow membrane type filter device 4 constituting the remainder of a filter membrane device G is provided to the planar empty part of the purifying chamber provided with the flat membrane filter chamber 3 in a suspended state. By this constitution, the packing area ratio to the purifying chambers of both of the devices 3, 4 is enhanced. The entry and exit to the device 3 from the upper opening of the upper part of the purifying chamber becomes easy and stirring and the dissolution efficiency of oxygen are also enhanced by the shaking due to air diffusion.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a purifying device in which a diffuser pipe is arranged at the bottom of a purifying chamber and a filter membrane device is provided above the diffuser pipe.

[0002]

2. Description of the Related Art As the purifying device, for example, a plurality of square plate-shaped flat membrane type filtration membrane devices arranged in a standing posture above an air diffusing tube in the purifying chamber is used. Was there.

[0003]

By the way, since the flat membrane type filtration membrane device cannot usually change its outer shape, the plan view shape of a combination of a plurality of the filtration membrane devices is previously set. Unless it has been adapted to the plan view shape of the purification chamber (which is difficult because it needs to be performed for each size of the purification device), the purification chamber can be densely packed with the filtration membrane device. However, the low filling area ratio has been a problem. The present invention has been made in view of such an actual situation, and an object thereof is to provide a means for solving the problem of the low filling area ratio of the filtration membrane device in the conventional device described above.

[0004]

A characteristic configuration of a purifying device according to the present invention (hereinafter referred to as the present invention device) is that a diffusing pipe is arranged at the bottom of a purifying chamber and a filtration membrane device is provided above the diffusing pipe. A purifying device provided above the air diffuser,
A flat sheet membrane filtration membrane device that constitutes a part of the filtration membrane device is installed, and the flat membrane membrane filtration device is provided in a blank space in a plan view in the purification chamber where the flat membrane membrane filtration device is installed indoors. The hollow child membrane type filtration membrane device constituting the rest is provided in a suspended state.

[0005]

According to the apparatus of the present invention having the above-mentioned characteristic structure, first, a plurality of the flat sheet membrane filtration membrane apparatuses are installed in the same manner as the conventional apparatus above the air diffusing tube in the purification chamber, and The filling area ratio of the filtration membrane device to the purification chamber,
For the time being, it is possible to raise the filling area ratio to the same level as in the conventional device. Moreover, according to the device of the present invention having the above-described characteristic configuration, the outer shape can be relatively freely changed to a blank portion in a plan view in the purification chamber in which the flat sheet membrane filtration device is provided inside the chamber. Since the porcine membrane type filtration membrane device is provided in a suspended state, in addition to the flat membrane type membrane filtration device, the hollow membrane type filtration membrane device can be additionally accommodated in the blank portion.

[0006]

Therefore, according to the apparatus of the present invention having the above-mentioned characteristic constitution, the filtration membrane device including both the flat membrane type filtration membrane device and the hollow child membrane type filtration membrane device is installed in the purification chamber. The filling area ratio is improved compared to the conventional device,
Therefore, the problem of low filling area ratio of the conventional filtration membrane device can be solved. In addition, in the hollow child membrane type filtration membrane device, the operation is carried out into and out of the purification chamber via a manhole or the like formed in the upper part of the purification chamber, but the workability at the time of the removal is There is also a merit that the hollow child membrane type filtration membrane device becomes favorable due to its easiness of deformation. Further, since the hollow child membrane type filtration membrane device is present above the air diffuser pipe, the hollow child membrane type filtration membrane device comes to oscillate due to air diffusion from the air diffuser pipe, and based on the oscillation. As a result, the water to be treated is agitated, so that the efficiency of dissolving oxygen supplied from the air diffuser into the purification chamber in the water to be treated is also improved.

Further, in the apparatus of the present invention having the above-mentioned characteristic constitution, if the flat membrane type filtration membrane device and the hollow membrane type filtration membrane device are arranged alternately in the plan view, The hollow child membrane type filtration membrane device swings due to air diffusion from the trachea, and based on the swing, the hollow child membrane type filtration membrane device comes into contact with the flat membrane type filtration membrane device, By the rocking / contact, the deposits on the flat sheet membrane filter device are wiped off, and the clogging is eliminated. Therefore, the device of the present invention having the above-described characteristic configuration can be applied to water treatment under the condition of relatively severe pollution.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a septic tank in which the first embodiment of the device of the present invention is partially incorporated.

As shown in FIG. 1, the septic tank comprises an anaerobic filter bed first chamber N1 and an anaerobic filter bed second chamber N2 from the upstream side.
The anaerobic filter bed tank N consisting of, the contact aeration tank E 1 consisting of the contact aeration tank first chamber E1 and the contact aeration tank second chamber E2, the settling tank P, and the disinfection tank S are treated in this order by natural advection of the water to be treated. It is configured by being provided so as to flow.

In the first chamber N1 of the anaerobic filter bed tank and the second chamber N2 of the anaerobic filter bed tank, anaerobic microorganisms that anaerobically decompose organic substances in the water to be treated grow, and in order to fix the biofilm thereof, Floors F1 and F2 are individually provided. In the contact aeration tank first chamber E1 and the contact aeration tank second chamber E2, there are first and first portions for fixing aerobic microorganisms that perform decomposition of residual organic matter in the water to be treated, nitrification reaction of ammonia nitrogen, and the like. The two contact materials C1 and C2 are individually provided. Further, the contact aeration tank first chamber E1 and the contact aeration tank second chamber E
2, a circulating flow of the water to be treated is produced in each chamber, and the aerobic microorganisms fixed on the first and second contact materials C1 and C2 are well contacted with the water to be treated containing an organic substance, and Air diffusers D1 and D2 are also provided for supplying air that gives oxygen to the aerobic microorganisms.

A settling tank P, which communicates with the contact aeration tank second chamber E2 below, is provided downstream of the contact aeration tank second chamber E2, that is, a purification chamber 1 of the apparatus of the present invention. At the bottom of the purification chamber 1, aerobic microorganisms that enter the purification chamber 1 from the contact aeration tank first chamber E1 and the contact aeration tank second chamber E2 and contribute to the purification of the water to be treated also there. An air diffuser for supplying air into the purification chamber 1 in order to supply necessary oxygen and to eliminate clogging of the flat sheet membrane filtration membrane device 3 arranged in the purification chamber 1 as described later. 2 are arranged. And
Above the air diffuser 2, there is provided a filtration membrane device G for performing filtration for further purification of the water to be treated which has been considerably purified by the anaerobic filter bed tank N and the contact aeration tank E. There is. As shown in FIGS. 2 and 3, in the purification chamber 1, a flat membrane that constitutes a part of the filtration membrane device G is located in the central portion in plan view and above the air diffusing tube 2. The mold filtration membrane device 3 is installed. In the flat plate type membrane separation device 3, a plurality of flat plate type filtration membranes are arranged in a parallel state, and the parallel state is fixed and integrated. Furthermore, in the plan view blank portion (around the central portion) in the purification chamber 1 in which the flat sheet membrane filter device 3 is provided in the room,
The hollow child membrane type filtration membrane device 4 constituting the rest of the filtration membrane device G is provided in a suspended state. In the hollow child membrane type filtration membrane device 4, both ends of a large number of hollow child membranes 4a are attached to the upper fixing member 4b, and the intermediate portion of each hollow child membrane 4a is simply hung. .

A disinfection tank S for receiving the liquid treated by the filtration membrane device G is provided downstream of the settling tank P. At the entrance of the disinfection tank S, a medicine barrel T containing a solid disinfectant
Is provided, and a plurality of slit-shaped openings for inflow and outflow of water to be treated are formed in the lower portion of the medicine cylinder T. Medicine bottle T
The water to be treated that has come into contact with the disinfectant therein passes under the baffle plate provided in the middle of the disinfection tank S, overflows and is discharged. In the contact aeration tank first chamber E1, an air lift pipe A is raised from the bottom in order to return peeled sludge, nitrification liquid, etc. to the anaerobic filter bed first chamber N1, and this is returned to the return pipe B.
And a blower for intermittently supplying air to the air lift pipe A, and a blower to constitute return means M.

Next, another embodiment will be described. In the drawings showing another embodiment, the same reference numerals as those in the first embodiment indicate the same or corresponding portions. The device of the present invention can be applied not only to the septic tank as in the above-described embodiment, but also to various water treatment devices such as a device for treating other general wastewater. For example, as shown in FIGS. 4 and 5, an air diffusing tube 2 is arranged at the bottom of an independent purification chamber 1 having a circular planar shape by the activated sludge treatment method, above the air diffusing tube 2, and The flat membrane type filtration membrane device 3 forming a part of the filtration membrane device G is installed in the central portion of the purification chamber 1 in plan view (that is, the circular central square portion). A second embodiment is also conceivable in which a hollow child membrane type filtration membrane device 4 constituting the rest of the filtration membrane device G is provided in a suspended state in a visually blank portion (that is, a portion excluding the central square portion). To be

Further, as shown in FIGS. 6 and 7, an air diffuser 2 is arranged at the bottom of an independent purification chamber 1 having a quadrangular planar shape, and a flat membrane type filtration membrane is provided above the air diffuser 2. A third embodiment is also conceivable in which the device 3 and the hollow child membrane type filtration membrane device 4 are arranged while being alternately positioned in plan view. In the third embodiment as described above, the flat sheet membrane filtration membrane device 3 and the hollow membrane membrane filtration membrane device 4 are alternately arranged when seen in a plan view. The empty membrane-type filtration membrane device 4 swings, and based on the swing, the hollow-membrane-type filtration membrane device 4 comes into contact with the flat membrane-type filtration membrane device 3. The deposits on the membrane filtration membrane device 3 are removed and the clogging is eliminated.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a septic tank provided as a part of a first embodiment of the device of the present invention.

FIG. 2 is a horizontal sectional view showing the main part thereof.

FIG. 3 is a cross-sectional view showing the same main part.

FIG. 4 is a horizontal sectional view showing a second embodiment of the device of the present invention.

FIG. 5 is a vertical sectional view thereof.

FIG. 6 is a horizontal sectional view showing a third embodiment of the device of the present invention.

FIG. 7 is a vertical sectional view thereof.

[Explanation of symbols]

 1 Purification room 2 Air diffuser 3 Flat membrane type filtration membrane device 4 Hollow child membrane type filtration membrane device G Filtration membrane device

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Internal reference number FI Technical display location C02F 3/20 ZAB Z (72) Inventor Masaharu Iwahashi 1 share at 2 Takamatsu, Kosai-cho, Koga-gun, Shiga Prefecture KUBOTA Shiga Factory (72) Inventor Katsumi Hamada 1 share at 2 Takamatsu, Kosai Town, Koga-gun, Shiga Prefecture KUBOTA Shiga Factory

Claims (2)

[Claims] 1. A purifying device comprising an air diffuser pipe (2) arranged at the bottom of a purification chamber (1) and a filtration membrane device (G) provided above the air diffuser pipe (2). Above the trachea (2), a flat sheet membrane filter device (3) forming a part of the filter membrane device (G) was installed, and the flat sheet membrane filter device (3) was installed indoors. A purification device in which a hollow child membrane type filtration membrane device (4) that constitutes the rest of the filtration membrane device (G) is provided in a suspended state in a blank portion in a plan view in the purification chamber (1). 2. The purifying apparatus according to claim 1, wherein the flat sheet membrane type filtration membrane device (3) and the hollow child membrane type filtration membrane device (4) are arranged alternately in the plan view.