JP2000271585A - Membrane separator arranging structure in septic tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the membrane separator arranging structure in a septic tank easy to perform the maintenance of a membrane separator. SOLUTION: In the arranging structure of a membrane separator 20 comprising a plurality of filter membranes provided in the tank body 11a of a septic tank 10a, guides 22, 21 assembled along the body peripheral surface of the membrane separator 20 are provided in the tank body 11a of the septic tank 10a so as to leave an interval up and down and a cavity 113a having the same shape as the bottom part of the membrane separator 20 is provided to the anchoring bottom part on which the membrane separator 20 is arranged of the tank body 11a of the septic tank 10a and the membrane separator 20 is drawn up along the upper and lower guides 21, 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an installation structure of a membrane separation device in a septic tank.

[0002]

2. Description of the Related Art Conventionally, in a membrane separation type septic tank, after starting operation,
It is necessary to replace the filtration membrane in a few years, and also when various problems occur in the membrane separation device such as breakage of the filtration membrane,
The membrane separation device must be easily accessible.
In addition, it is necessary to install the membrane separation device so that the installation position does not shift due to a large vibration such as an earthquake, and the membrane separation device does not fall down.

[0003]

Since the membrane separation device is immersed in the water to be treated mixed with sludge, its position cannot usually be confirmed. For this reason, it is necessary to check the position of the membrane separation device by putting a hand in the water to be treated at the time of lifting. At that time, it is very difficult to return the membrane separation device to the original predetermined position. In addition, the membrane separation device is composed of a filtration membrane and a filtration membrane case capable of storing the filtration membrane, and weighs about 30 kg. Therefore, pulling out the membrane separation device for replacing the filtration membrane is a great effort. . Further, since the membrane separation device is immersed in the water to be treated, its position cannot usually be confirmed. For this reason, there is a problem that it is very difficult to return the membrane separation device to a predetermined position at the time of installation because it is necessary to check the position of the membrane separation device by putting a hand into the water to be treated.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an installation structure of a membrane separation device in a purification tank in which the maintenance of the membrane separation device is easy. .

[0005]

According to a first aspect of the present invention, there is provided an installation structure of a membrane separation device in a septic tank according to the present invention, which comprises a plurality of filtration membranes provided inside a tank body of the purification tank. The inside of the tank body of the septic tank,
Along the body peripheral surface of the membrane separation device, framed guides are provided at intervals up and down, and the bottom of the tank body of the septic tank in which the membrane separation device is installed has the same shape as the installation bottom of the membrane separation device. Is provided so that the membrane separation device can be pulled up along the vertical guide.

According to a second aspect of the present invention, there is provided an installation structure of a membrane separation device in a septic tank, wherein a plurality of filtration membranes are vertically arranged at predetermined intervals, and four upper and lower corners of the filtration membrane are fixed by fixing jigs. The upper fixing jig is connected to an upper support frame, and a filter membrane is detachably inserted into a filter membrane case which is installed in a septic tank and opens upward.

[0007]

According to a first aspect of the present invention, there is provided an installation structure of a membrane separation device in a septic tank according to the present invention, wherein a framed guide is vertically arranged inside a tank body of the septic tank along a body peripheral surface of the membrane separation device. Provided at intervals, the bottom of the tank body of the septic tank in which the membrane separation device is installed is provided with a recess having the same shape as the installation bottom of the membrane separation device, so that the membrane separation device can be pulled up along the vertical guide. Therefore, if the take-out chain is hooked on the guide in advance, it is not necessary to confirm the position of the membrane separation device submerged in the water to be treated.

[0008] Also, when the water is lifted up along with the guide, the water does not hit the inner wall of the water purification tank or the like and does not damage the water purification tank. When the membrane separation device is installed, if it is lowered along the guide, it will fit in the depression on the bottom of the septic tank and can be easily returned to its original position. Further, it is possible to prevent the installation position of the membrane separation device from being largely shifted due to the guide and the depression, and to prevent the membrane separation device from falling down. In addition, since there is no risk of falling, during transportation, the membrane can be transported with the membrane separation device inserted in the septic tank, and the transportation cost can be reduced.

According to a second aspect of the present invention, in the installation structure of the membrane separation device in the septic tank, a plurality of filtration membranes are vertically arranged at predetermined intervals, and the upper and lower four corners of the filtration membrane are fixed by fixing jigs. The upper fixing jig is connected to the upper support frame, and the filter membrane is detachably inserted into the filter membrane case which is installed in the septic tank and opens upward, so that the filter membrane case is left in the septic tank. As it is, only the filtration membrane can be pulled up. In addition, the upper fixing jig is connected to the support frame and is within reach, so that it is not necessary to search in the water to be treated. Furthermore, when inserting the filtration membrane into the filtration membrane case, the filtration membrane can be returned to a predetermined position in the filtration membrane case by lowering the support frame to the original position. Furthermore, since the filtration membrane case is fixed to the septic tank main body, there is no danger of falling.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a first embodiment of an installation structure of a membrane separation device in a septic tank according to the present invention. FIG. 1 is a sectional view showing a first embodiment of a membrane separation device in a septic tank according to the present invention, FIG. 2 is a side view showing installation of the membrane separation device, and FIG. 3 is a plan view showing installation of the membrane separation device. It is. 4 to 7 show a second embodiment of the installation structure of the membrane separation device in the septic tank according to the present invention. FIG. 4 is a side view showing a second embodiment of the membrane separation device of the present invention, and FIG.
Is a plan view showing installation of a membrane separation device, FIG. 6 is a perspective view showing assembly of a filtration membrane plate, and FIG. 7 is a perspective view showing a membrane case.

The first embodiment is shown in FIGS. The membrane separation device 20 in the septic tank 10a of the present invention includes:
It is provided in a nitrification tank 113 which is a one-partition tank inside the tank main body 11a of the septic tank 10a. As shown in FIG. 1, the inside of the tank body 11a of the septic tank 10a is partitioned by partition walls 12 and 13. As the compartment tank, the treated water is taken in from the inflow port 14 and the contaminant treatment tank 111 for separating and separating the contaminants in the filtration tank, the denitrification tank 112 for denitrifying the treated water, and the solid-liquid separation of the treated water. A nitrification tank 113 for disinfecting and discharging is provided. The membrane separation device 20 is installed in a nitrification tank 113.

As shown in FIG. 2 and FIG.
The filter membrane 25 is housed vertically inside the prismatic body with a space between them. Along the trunk surface of the membrane separation device 20, framed guides 21 and 22 are provided at an interval above and below. The guides 21 and 22 are frame members 2
1a, 21b, 22a, 22b, and the frame material 21a,
21b, 22a, and 22b are provided so as to be framed in a girder. The guides 21 and 22 may be anything as long as they are along the outer periphery of the shape of the membrane separation device 20. In this embodiment, the rust-proof treatment of 45 mm × 45 mm is performed in accordance with the membrane separation device 20 having a rectangular cross section. A combination of L-shaped steel materials is used.

In addition, any material which does not rust and has a certain strength may be used. For synthetic resin, vinyl chloride and polyethylene are suitable. The number of guides is two steps above and below. The position of the first stage guide 22 is set at a position 100 mm below the manhole, and the position of the second stage is set substantially in the middle between the first stage and the bottom surface of the tank body 11. For example, the tank body 11a
When the tank height is 1800 mm, the first stage is suitably 100 mm from the top and the second stage is preferably 950 mm from the top. Further, the guides may be provided in three stages other than two stages. The membrane separation device 20 has a hook 23 for hanging a chain 24 in advance for loading and unloading.
Is attached to the upper part of the membrane separation device 20 which is easily accessible from the manhole 16.

The bottom of the tank main body 11a is provided with a depression 113a having the same shape as the bottom of the installation of the membrane separation device 20. Therefore, when the membrane separation device 20 is installed, the installation bottom surface of the membrane separation device 20 fits into the recess 113a, and the installation can be performed without wobbling.

As described above, the installation structure of the membrane separation device 20 in the septic tank 10a of the present invention is framed inside the tank body 11a of the septic tank 10a along the rectangular outer peripheral surface of the membrane separation device 20. Guides 22 and 21 are provided at intervals above and below, and a depression 113a having the same shape as the installation bottom of the membrane separation device 20 is provided at the bottom of the tank main body 11a of the purification tank 10a in which the membrane separation device 20 is installed. Since the apparatus 20 is pulled up along the upper and lower guides 22 and 21, if the take-out chain 24 is hooked on the guide 22 in advance, the position of the membrane separation apparatus 20 submerged in the water to be treated is obtained. You do not need to check

Further, when the membrane separation device 20 is lifted up, it is lifted straight up along the guides 22 and 21 so that it does not hit the inner wall of the tank body 11a and does not damage the tank body 11a. When the membrane separation device 20 is installed, if it is lowered along the guides 22 and 21, it can be housed in the depression 113a on the bottom surface of the tank body 11a and can be easily returned to the original position. In addition, it is possible to prevent the installation position of the membrane separation device 20 from being largely displaced by the guides 22 and 21 and the depression 113a, and to prevent the membrane separation device from falling. In addition, since there is no possibility of falling, during transportation, the container can be transported with the membrane separation device 20 inserted in the tank main body 11a, and the transportation cost can be reduced.

Next, a second embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 4, the membrane separation device 30 in the septic tank 10b of the present invention is provided inside the tank body 11b of the septic tank 10b. A pair of support rods 35 are bridged along two opposing sides of the membrane separation device 30 on the upper part of the inner wall of the tank body 11b of the septic tank 10b. The support rods 35, 35 are made of L-shaped steel material, and the upper surface thereof is configured so that the support frame 33 can be locked. Support frame 33
Is formed in a frame shape so as to be easily locked to the support bar 35 and further easily lifted and lifted. Also, the upper fixing jig 3
2 c and 32 d are connected to the support frame 33. Then, as shown in FIG. 5, the support frame 33 is
5.

The membrane separation device 30 is provided with a filtration membrane 31 erected inside at an interval. The filtration membrane 31
The filtration membrane 31 is fixed collectively by fixing jigs 32a, 32b, 32c, and 32d. Fixing jigs 32a, 32
b, 32c, and 32d are arranged along four upper and lower corners of the filtration membrane 31 in a direction perpendicular to the filtration membrane surface. The fixing jigs 32 a, 32 b, 32 c, and 32 d are provided with fitting grooves 321 that can fit the corners of the filtration membrane 31.
The interval 1 is the same as the interval at which the filtration membranes 31 are provided.

As shown in FIG. 6, fixing jigs 32a, 32
b, 32c, 32d and the filtration membrane 31 are fixed to the filtration membrane 3
Fixing jigs 32a, 32b, 32c, 32
d into the fitting groove 321 and screw holes 3 with the fixing screws 322.
20 and 311 are fixed. As described above, the filtration membrane 31 is accommodated in the filtration membrane case 34 shown in FIG. 7 with the four corners fitted by the fixing jigs 32a, 32b, 32c, and 32d.

The collectively fixed filtration membrane 31 is attached to a support frame 33 at a position accessible from the manhole 16 by a chain 24.
It can be easily pulled up by hooking b.
Further, a support frame 33 can be tightly locked to the support rod 35 so that the fixing jigs 32a, 32b, 32c, 32d and the filtration membrane 31 are located at predetermined positions. The filtration membrane case 34 is fixed to the tank body 11b.

Fixing jigs 32a, 32b, 32c, 32d
The material of the support rod 35 is preferably stainless steel, which has strength enough to suspend a material of 10 kg or more and does not rust. Fixing jigs 32a, 32b, 3
Although the sizes of 2c and 32d are different depending on the number of the filtration membranes 31, the shapes are the same. Thus, the filtration membrane 3
Fixing jigs 32a, 32b, 32c, 32
By fixing them collectively by d, it is possible to pull up only the filtration membrane 31 while keeping the membrane case 34 in the tank main body 11b.

As described above, the membrane separation device 30 in the septic tank 10b of the present invention includes the filter membranes 31 erected at intervals at the upper and lower corners of the filter membrane 31 in a direction perpendicular to the filter membrane surface. Jigs 32 a, 32 b, 3 provided with fitting grooves 321 that can be fitted along the corners of the filtration membrane 31.
2c and 32d, the four corners of the filtration membrane 31 are fixed collectively, and a pair of support rods 35 are provided on the inner wall of the tank main body 11b of the purification tank 10b along two opposing sides of the membrane separation device 30. , 35 are passed over and the upper fixing jig 32
The supporting frame 33 connected to c and 32d is the supporting rod 35,
35, the filtration membrane 31 is fixed to the fixing jig 32.
a, 32b, 32c, and 32d are housed in the membrane case 34 in a state where they are fitted and fixed collectively by the fitting grooves 321. When the filter membrane 31 is pulled up, the filter membrane case 34 is left and pulled up. Since it is made possible, only the filtration membrane can be pulled up while the filtration membrane case 34 remains in the septic tank.

Further, the upper fixing jigs 32c and 32d are connected to the support frame 33 and are within reach, so that there is no need to search for the treated water mixed with sludge. Further, when inserting the filtration membrane into the filtration membrane case, the filtration membrane can be returned to a predetermined position in the filtration membrane case by lowering the fixing jig to the original position. Furthermore, since the filtration membrane case is fixed to the septic tank main body, there is no danger of falling.

[0024]

According to the first aspect of the present invention, there is provided an installation structure of a membrane separation device in a septic tank according to the present invention, wherein a guide framed in a rectangular shape is provided inside the septic tank along the outer peripheral surface of the membrane separation device. Hooks for hooking chains are attached to the upper guide, and a depression having the same shape as the bottom of the membrane separation device is provided at the bottom of the septic tank where the membrane separation device is installed. Is pulled up along the vertical guide,
There is no need to check the position of the membrane separation device because there is a chain for removal. In addition, when the container is lifted, if the container is pulled up directly along the guide, it does not hit the inner wall of the tank. At the time of installation, if it is lowered along the guide, it will fit in the recess on the bottom and can be easily returned to its original position. Further, it is possible to prevent the installation position of the membrane separation device from being largely shifted due to the guide and the depression, and to prevent the membrane separation device from falling down. Further, since there is no risk of overturning, during transportation, the membrane separation device may be carried with the membrane separation device inserted. Therefore, transportation costs can be reduced.

According to a second aspect of the present invention, there is provided an installation structure of the membrane separation device in the septic tank, wherein the membrane separation device includes a fixing jig for connecting and fixing the filtration membrane plate that is erected at an interval from the filtration membrane plate. The fixing jig comprises a membrane case for accommodating a membrane plate, and the fixing jig is arranged vertically, and has a groove provided at the same interval as the standing filtration membrane plate, and a frame connected to the upper fixing material. The filtration membrane plate is housed in a membrane case in a state where the filtration membrane plate is collectively fixed by the fixing jig, and a chain is hung on the hanging member while leaving only the membrane case. Since the plate can be pulled up, only the film can be pulled up while the film case is left in the main body tank by fixing only the film by the fixing jig at once. Further, since the fixing jig is within reach, there is no need to search the inside of the water to be treated. Further, at the time of insertion, if the fixing jig is lowered to the original position, the membrane can be returned to a predetermined position in the membrane case. Furthermore, since the membrane case is fixed to the tank body, there is no danger of falling.

[0026]

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of a membrane separation device in a septic tank according to the present invention.

FIG. 2 is a side view showing the installation of the membrane separation device.

FIG. 3 is a plan view showing the installation of the membrane separation device.

FIG. 4 is a side view showing a second embodiment of the membrane separation device of the present invention.

FIG. 5 is a plan view showing the installation of the membrane separation device.

FIG. 6 is a perspective view showing the assembly of the filtration membrane plate.

FIG. 7 is a perspective view showing a membrane case.

[Explanation of symbols]

 Reference Signs List 10a, 10b Septic tanks 11a, 11b Tank main body 111 Impure substance treatment tank 112 Denitrification tank 113 Nitrification tank 113a Depression 12 Partition wall 13 Partition wall 20, 30 Membrane separation device 21 Guide 21a, 21b Frame material 22 Guide 22a, 22b Frame material 23 Hook 24 Chain 25 Filtration membrane 16 Manhole 30 Membrane separation device 31 Filtration membrane 32a, 32b Receiving material 32c, 32d Receiving material 321 Fitting groove 33 Support frame 34 Filtration membrane case 35 Support rod

Claims (2)

[Claims] 1. An installation structure of a membrane separation device including a plurality of filtration membranes provided inside a tank body of a septic tank, wherein the inside of the tank body of the septic tank is along a body peripheral surface of the membrane separation device. Then, framed guides are provided at intervals above and below, and a depression having the same shape as the installation bottom of the membrane separation device is provided at the bottom of the tank body of the septic tank in which the membrane separation device is installed. An installation structure of a membrane separation device in a septic tank, which is lifted up along the vertical guide. 2. A plurality of filtration membranes are vertically arranged at predetermined intervals, and upper and lower four corners of the filtration membrane are fixed by fixing jigs, and an upper fixing jig is connected to an upper support frame, An installation structure of a membrane separation device in a septic tank, wherein a filtration membrane is detachably inserted into an upwardly opened filtration membrane case installed in the septic tank.