JP2002306932A - Filtration separation cylindrical membrane cartridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filtration separation cylindrical membrane cartridge which is light in weight, maintains a required filtration performance and can be used by itself. SOLUTION: This filtration separation cylindrical membrane cartridge is used in the state of being immersed in a water treating tank for purifying water and extracts permeated water by filtrating and separating a non-purified water component by a cylindrical filtration membrane. Therein, openings of both ends of a cylindrical cartridge body A1 which is constituted of a resin membrane made of FRP having continuous micropores are kept watertight and are closed, and the cylindrical cartridge body is arranged and used independently and vertically one by one in a unit frame 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for purifying rainwater and domestic wastewater, and immersing a sludge component in a water treatment apparatus for purifying water by removing sludge components from an activated sludge tank to filter non-purified components. The present invention relates to a filtration separation cylindrical membrane cartridge used for extracting permeated water by separation.

[0002]

2. Description of the Related Art For example, as a method for efficiently treating sewage, microorganisms growing on organic matter as food are collected into activated sludge, and the organic matter is adsorbed and decomposed. Methods for purifying water are widely practiced. Instead of eliminating this settling operation, a method of completely separating sludge using a filtration membrane for separating activated sludge has begun to spread, and since the treated water quality is not affected by the sedimentation of sludge, maintenance It is reported that there are great advantages such as simplification.

A system for solid-liquid separation of such activated sludge will be described with reference to FIG. 6 which is a drawing according to the present invention. As an example of using a filtration membrane having a cylindrical shape in the above-mentioned filtration separation system, an example in which a ceramic material is formed into a cylindrical shape and used is disclosed in Japanese Patent Application Laid-Open No. H10-235162. The filtration module M shown in this publication includes a plurality of ceramic filtration cylinders 101 described below.
Is a modularized filtration device which is mounted horizontally in a predetermined frame and attached in parallel to a water collecting pipe 41 by a predetermined method, and is used by being immersed in a water treatment tank 43. In this state, the inside of the water collection pipe 41 is depressurized using the pump P connected to the water collection pipe 41, and a negative pressure is applied to each of the ceramic filtration cylinders 101 in the filtration module M.
Sewage in the water treatment tank 43 is suction-filtered, and permeated water is extracted inside the ceramic filtration cylinder 101, and discharged from the water treatment tank 43 via the water collecting pipe 41. In this system, in order to prevent sludge from adhering to the outer peripheral portion of the ceramic filter cylindrical body 101 by applying a negative pressure and closing the pores thereof, a sprinkler connected to the aeration device B is provided below the water treatment tank 43. With the trachea 46 installed, the filtration module M
A method of aerating the inside is employed.

Next, the configuration of the filtration module M will be described with reference to FIGS. 14 and 15. A pair of opposed headers 102 and 103 are provided at both ends of each of the ceramic filtration cylinders 101, and a pair of similarly arranged guide plates 110 are provided between the headers 102 and 103. And are connected to each other. A face plate 104 is attached to one header 102 provided with a drain port 106 so that a water collecting chamber 105 is formed. On the face plate 104, each ceramic filtration cylinder 1
01 is open in the water collecting chamber 105, and a hole 107 for inserting and supporting one end thereof is provided.
On the other hand, the other ends are supported by the header 103. The periphery of the hole 107 into which the end of the ceramic filtration cylinder 101 is inserted, and the supporting portion of the header 103 at the other end of the ceramic filtration cylinder 101 are kept watertight by adhesives 108 and 109, respectively. Thus, it is fixed to both ends of each ceramic filtration cylinder 101.
That is, the filtration module M is a ceramic filtration cylinder 1
A pair of headers 102, 1 spaced apart longer than 01
03 are also integrally connected in a frame shape by a pair of guide plates 110, and both ends of a large number of ceramic filtration cylinders 101 are horizontally supported by one header 103 and face plate 104, and both upper and lower surfaces are open. In this state, it is immersed and arranged in the water treatment tank 43.

[0005] When performing filtration using such a filtration module M, the filtration module M is immersed in the water treatment tank 43 and aerated to flow sludge water. As a result, the ascending sewage (filtration water) 11 becomes a large number of ceramic filtration cylinders 1.
15, as shown by the arrow in FIG. 15, the permeated water passing through the peripheral wall of the ceramic filtration cylinder 101 is collected by the negative pressure acting on the ceramic filtration cylinder 101 through the drain port 106. The water is discharged to the water collecting pipe 41 outside the filtration module M via the chamber 105 and the drain port 106. As a result of the continuous aeration operation at the lower end opening of the filtration module M, the ascending sewage 11 is continuously generated, and the solids 8 (see FIG. 5) in the sludge water are diffused to form a ceramic filter. The film surface of the cylindrical body 101 is updated to prevent the blockage.

However, particularly in an activated sludge tank containing a large amount of solid matter in the water treatment tank 43, it is difficult to prevent the pores of the ceramic filtration cylinder 101 from being blocked by only aeration. In addition, the ceramic filtration cylinder 10
1 is used in a horizontal arrangement, so that after the sludge water rises in the module by aeration, solids 8 (see FIG. 5) in the sludge water accumulate on the cylindrical upper part 101a of the ceramic filtration cylindrical body 101. As a result, the filtration area, which should be effective over almost the entire circumference of the cylindrical body, becomes ineffective and decreases only in that portion due to the sediment, so that the predetermined filtration efficiency cannot be maintained. . The solid matter 8 is a lump-shaped material to be filtered such as activated sludge. In addition, not only the solids 8 but also non-water-purifying components 10 adhering to the ceramic filtration cylinder 101 like slippage were present, each of which caused the pores of the ceramic filtration cylinder 101 to be blocked.
Therefore, it is necessary to expose each of the ceramic filtration cylinders 101 to physically scrape off the deposited solids 8 and the non-purified water component 10. However, the filtration cylinders 101 adhere to the face plate 104 and the header 103. Since they are fixed and integrated using the agents 108 and 109, it is difficult to wash them one by one.

In addition, since ceramic materials are generally brittle, they are easily damaged by vibrations due to aeration, etc., so that they are placed in an aeration tank in a vertically arranged state, which is considered to be more affected by vibrations than in a horizontal arrangement. The example used has not been reported, and only the filtration separation system having the non-purified water component 10 as the main material to be filtered is used.
Had been reported. Also, the ceramic filtration cylinder 101
When the ceramic filter cylinder 101 is damaged,
In addition, since it is necessary to replace the entire filtration module M, a high cost is required to maintain the filtration operation with high reliability and efficiency.

In addition, there is a conventional filtration / separation system in which a filtration membrane is made of a resin instead of a ceramic material lacking rigidity. However, none of the filtration / separation systems has a membrane strength comparable to the ceramic material. There was no use example in which the shape was kept cylindrical.

[0009]

SUMMARY OF THE INVENTION An object of the present invention is to provide a filtration / separation cylindrical membrane cartridge which can be used independently while maintaining a required filtration performance while being lightweight.

[0010]

Means for Solving the Problems The invention of claim 1 for solving the above-mentioned problems is used by immersing in a water treatment tank for purifying water. A filtration / separation cylindrical membrane cartridge for extracting permeated water by filtration / separation, wherein both ends of a cylindrical cartridge body composed of an FRP resin membrane having continuous fine pores are kept watertight by caps. It is characterized in that it is closed and closed one by one in the unit frame, and is used in a vertical arrangement.

According to the first aspect of the present invention, the cylindrical cartridge body is formed of the FRP resin film having fine continuous pores while ensuring the thickness by a specific manufacturing method described later. Since it is lighter than a conventional cylindrical cartridge body made of ceramic, it is easy to handle, and the burden on maintenance is reduced, so that the reliability of the filtration / separation system can be improved. In addition, since each cartridge is independently arranged vertically, each aerating flow is a cylindrical filtering portion as compared to the conventional configuration in which each ceramic cylindrical tube is horizontally arranged and modularized. Therefore, the non-purified water component hardly adheres to the cartridge body, and the filtration operation can be performed efficiently. Further, when a problem occurs in the cylindrical membrane cartridge, only one of them can be easily replaced.

According to a second aspect of the present invention, in the first aspect of the present invention, the cartridge body is formed in a tapered cylindrical shape, and is vertically arranged so that the large-diameter portion is upward, and adjacent to each other. The cartridge is characterized in that the gap is gradually narrowed upward.

According to the second aspect of the present invention, when the sewage containing air bubbles rises, the sewage is forced to flow along the outer peripheral surface of the cartridge body. , Good filtration performance can be maintained.

According to a third aspect of the present invention, there is provided a method for immersing a non-purified water component in a water treatment tank for purifying water, filtering the non-purified water component through a cylindrical filtration membrane, and extracting permeated water. The filtration / separation cylindrical membrane cartridge, wherein the cartridge body has a double pipe structure in which two inner and outer filtration cylinder membranes are concentrically arranged, and a space between both filtration cylinder membranes is a passage of permeated water. As a result, the ring-shaped openings at both ends of the cartridge main body are closed while being kept watertight by a cap, and the two inner and outer filtration cylindrical membranes constituting the cartridge main body are:
It is composed of an FRP resin film having continuous fine pores, and is characterized in that it is used independently in a unit frame and vertically.

According to the third aspect of the present invention, in addition to the effect of the first aspect, it is possible to perform filtration and separation on the inner peripheral surface of the cartridge body as well, thereby increasing the filtration area without increasing the installation space. Thus, the filtration efficiency of the entire filtration separation system is improved.

According to a fourth aspect of the present invention, in the third aspect of the present invention, ascending sewage is supplied to the inner peripheral surface of the filtration cylindrical membrane at the lower end opening of the inner filtration cylindrical membrane constituting the cartridge body. Characterized in that an inverted conical water flow guide body for flowing along is provided.

According to the fourth aspect of the present invention, since the aeration flow spreads over the entire inner peripheral surface of the cylindrical membrane cartridge main body along the inverted conical outer peripheral surface, the non-water-purifying component flows to the inner peripheral surface of the cylindrical membrane cartridge main body. Can be prevented, and the efficiency of the filtration operation can be improved.

The invention of claim 5 is the invention of claim 3 or 4.
In the invention described in the above, the filtration cylindrical membrane body outside the cartridge body is formed into a tapered cylindrical shape, and is vertically arranged so that the large-diameter portion is upward, and the gap between adjacent cartridges is directed upward. It is characterized by being formed gradually narrower.

According to the fifth aspect of the present invention, when the sewage containing air bubbles rises, the sewage is forced to flow along the outer peripheral surface of the cartridge body, so that the non-purified component is less likely to adhere.

According to a sixth aspect of the present invention, in the invention according to any one of the third to fifth aspects, a single tube structure is provided inside the inner filtration cylindrical membrane constituting the cartridge body having the double tube structure. Another cartridge body is arranged substantially concentrically, and both cartridge bodies are integrally connected at a cap portion.

According to the invention of claim 6, since another filtration area can be formed in the space inside the cartridge body having the double tube structure, the ratio of the filtration area to the space occupied by the cartridge is further increased, and the filtration area is increased. Efficiency is further increased.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the cylindrical film cartridge K ₁ according to the first embodiment of the present invention will be described in detail with reference to FIGS. Figure 1 is a number in the unit frame 12 is a partial plan view of a state where the cylindrical film cartridge K ₁ is a vertical arrangement of the FIG. 2 is a partial perspective view of the same state, FIG. 3, the same state is a partial perspective view from the bottom side, Figure 4 is an exploded perspective view of a cylindrical film cartridge K _1, FIG. 5 is a longitudinal sectional view of a use state of the cylindrical film cartridge K _1, FIG. 6 it is a cylindrical film cartridge K ₁ vertical arrangement the unit frame 12, a front cross-sectional view of a state of being immersed in the water treatment tank 43.

[0023] First, the configuration of the cylindrical film cartridge K _1. As shown in FIGS. 2 to 5, a cylindrical membrane cartridge K ₁ which is a filtration membrane having a cylindrical shape.
Is a filter for filtering and separating the non-purified water component 10 on the inner and outer peripheral portions thereof and extracting the permeated water to the water collecting pipe 41 via the drain pipe 45. Is different from each other, and each filter is of an independent cartridge type, and is used by being vertically arranged on the unit frame 12 by a method described later. Cylindrical film cartridge K ₁ is on the outside of the inner filtration cylindrical film body 1 of cylindrical tube shape, place it than the outer filtration cylindrical membrane member 2 having a larger diameter coaxially, a transmission waterway 9 is formed between them a cartridge body a ₁ of the double pipe structure for extracting permeate therein, upper and lower ends each cap ring shape for both ring-shaped opening 7 of the upper and lower ends to close to hold the watertight 4 , 5 and a drain pipe connector 6 attached to a drain port of the upper end cap 4 for discharging permeated water.

The inner and outer filtration cylindrical membranes 1, 2
Are all formed of FRP resin, differing only in their outer diameter (or inner diameter), and have the same length. The inner filtration cylindrical membrane 1 having a smaller diameter is inserted into the inner peripheral portion of the large-diameter outer filtration cylindrical membrane 2 at the same height. In addition, each of the inner and outer filtration cylindrical membrane bodies 1 and 2 molded with the FRP resin according to the present invention has a thickness and strength in a transmission direction and a uniform filtration pore having a uniform pore for filtering. Details of the material, such as its configuration and manufacturing method, will be described later.

The upper and lower caps 4, 5
Has a ring shape slightly larger than the pair of ring-shaped openings 7. An outer peripheral wall portion 4a and an inner peripheral wall portion 4b are formed on the upper end cap 4, and each of the inner and outer filtration cylindrical membranes 1, ₁ constituting the cartridge body A1.
The upper end of the 2, fitted respectively inserted into the inner circumferential wall 4b and the outer peripheral wall portion 4a of the upper end cap 4, the ring-shaped opening 7 of the upper end of the cartridge body A ₁ is closed, the contact portions of both The inner and outer watertightness is maintained by using an adhesive (not shown). Also, on the lower end cap 5,
The outer peripheral wall portion 5a and is formed with an inner peripheral wall portion 5b, the same structure as the ring-shaped opening 7 of the lower end of the cartridge body A ₁ is closed by the lower end cap 5. Further, the upper end cap 4 is provided with a through hole serving as a drain port.
The drain pipe connector 6 is attached via 68. The pair of stoppers 61 attached to the upper portion of the ring-shaped face of the upper end cap 4 is intended for inserting a floating preventing wire 62 for preventing the floating of the cylindrical film cartridge K ₁ installed in the unit frame 12 is there.

Next, the inner and outer filtration cylindrical membranes 1,
The FRP filtration material which is a resin material used in No. 2 will be described. FRP filtration material for use as a filtration cylinder film of cylindrical film cartridge K ₁ of the present invention was mixed with a radical polymerization type thermosetting resin and liquid water plus hardener, i.e. the resin particles are dispersed in an aqueous phase The obtained O / W type thermosetting resin aqueous dispersion is hardened at room temperature or under heating in the presence of a glass chop strand mat and a nonwoven fabric as a reinforcing material, and dried to remove fine continuous pores obtained by removing water. Have
The resin and water before the curing reaction are mixed to form an emulsion, and the resin existing in contact with water becomes a spherical shape having a self-minimum surface area due to the action of surface tension,
The curing reaction proceeds therein. After completion of the curing reaction, the moisture is removed by evaporation, so that fine pores are continuously formed between the resin particles. The pores have an optimum performance for filtration, and are of such a degree that filtration of bacteria having a size of 1 μm or more is sufficiently possible. Further, the FRP filter material is a resin material, so that it is lightweight, has sufficient strength not inferior to a ceramic material by the addition of a reinforcing material, and has excellent durability. In addition, as a liquid radical polymerization type thermosetting resin, a liquid unsaturated polyester resin, a liquid epoxy (meth) acrylate resin, a liquid urethane (meth) acrylate resin, a liquid (meth) acrylic resin, or the like can be given.

Further, since the above-described FRP filter medium is formed from a liquid composition, a free-form filter medium can be formed. The liquid radical polymerization type thermosetting resin and water mixed at a predetermined ratio exhibit good viscosity and thixotropic properties, and form an O / W type thermosetting resin aqueous dispersion which does not sag even on a vertical surface. As a result, it is possible to easily mold. As shown in FIG. 9, the inner and outer filtration cylindrical membrane bodies 1 and 2 according to the present invention are formed using a cylindrical core 20 'having an inner diameter corresponding to each of the inner diameters. . A release material is applied to the outer peripheral surface of the core 20 ′, and a glass chop strand mat as a reinforcing material and a non-woven fabric are alternately layered on the outer peripheral surface of the core 20 ′. After being impregnated by the wall thickness, the resin is cured and dried under predetermined conditions to remove the core 2 from the resulting resin.
By extracting 0 ′, the inner and outer filtration cylindrical membrane bodies 1 and 2 are formed. Therefore, the core 20 ′
A draft is provided. Incidentally, FIG. 9 is a view showing the molding of the cartridge body A ₂ to be described later, since the molding principle is the same, and reference.

The outer diameter of each of the inner and outer filtration cylindrical membranes 1 and 2 formed into a cylindrical shape as described above is about 60 and 100 mm, respectively, and the height thereof is about 8
00 mm, and the thickness of each is 2-3 m.
m. Since each of the filtration cylindrical membranes 1 and 2 is formed in a cylindrical shape, even if its thickness is 2-3 mm, its shape rigidity causes negative pressure during filtration and positive pressure during backwashing. It has sufficient strength against pressure.

Next, a cylindrical film cartridge K _1, a method for accommodating arranged vertically arranged in the unit frame 12 together many, FIGS. 1 to 3 will be described with reference to FIG. First, the configuration of the unit frame 12 will be described. Unit frame 12 is a rectangular parallelepiped frame body, the upper and lower surfaces thereof, bubbles exiting the diffuser tubes 42 are open so as turn on the cylindrical film cartridge K _1, face each other along the longitudinal direction Q A pair of longitudinal direction side plate portions 16 and a pair of lateral direction side plate portions 17 which are opposed to each other along a short direction orthogonal to them are provided and integrated. The water collecting pipe 41 is horizontally held on the side of the upper end of one of the longitudinal side plates 16. The unit frame 12
A pair of L-shaped supports 13 each having an elongated rod shape and an L-shaped cross section are provided along the short direction.
A pair of L-shaped supports 13 are arranged at a middle portion in the width direction of the pair of L-shaped supports 13, and a guide attachment wire 64 is arranged along the lateral direction. the wire 64, a plurality of water flow guide member 15 at the arrangement pitch and the same pitch of the cylindrical film cartridge K ₁ is mounted disposed thereabove.

Both ends of the L-shaped support 13 and the guide attaching wire 64 are fixed to lower ends of the pair of longitudinal side plates 16, respectively. Further, the pair of L-shaped support 13 is for the rests a cylindrical film cartridge K ₁ of a predetermined number along the short side direction, are arranged at the substantially same spacing and diameter I have.
Further, the pair of L-shaped support 13, in order to vertically positionable setting location of each cylindrical film cartridge K _1, four pair of supporting projections 18 corresponding to the outer peripheral shape of its lower end,
At the arrangement pitch and the same pitch of the cylindrical film cartridge K _1, it is integrally provided. In addition, the water flow guide 1
5, increase wastewater 11 to flow along the inner wall of the cartridge main body A _1, is intended to guide. An inverted truncated cone-shaped water flow guide 1 is provided below the water flow guide 15.
5a is provided, and a conical accumulation preventing portion 15b is provided on the upper portion thereof, and the bottom surfaces of both are united and integrally formed. The water flow guide 15 is attached above the guide attachment wire 64 at a predetermined interval.

[0031] The above relative to the unit frame 12 of the construction, the cylindrical film cartridge K _1, as its lower part and the water flow guide portion 15a, becomes substantially the same height, yet are arranged concentrically to each other, Positioned by the support protrusion 18 and the L-shaped support 13, they are individually arranged vertically. Further, the each cylindrical film cartridge K stop 61 above each pair provided on the upper surface portion of the _1, floating preventing wire 62 is inserted, their end portions, said pair of longitudinal side plate portion 16 Above each other. The anti-floating wire 62 is for preventing each cylindrical membrane cartridge K ₁ vertically arranged in the unit frame 12 from floating with respect to the unit frame 12 in a state of being immersed in the water treatment tank 43. is there. Then, as shown in FIGS. 2 and 5, each cylindrical membrane cartridge K ₁
The drainage pipe connector 6 attached to the upper end face of the water collecting pipe 41 and the water collection pipe connector 44 attached to the water collecting pipe 41 are connected to each other using a drainage pipe 45. The water collecting pipe 41 is extended outside the water treatment tank 43, and a pump P is provided in the middle of the pipe.
Is incorporated so that the pressure changing operation of the pump P extends to the inside of the water collecting pipe 41.

Next, the operation of filtering sewage (water to be filtered) using the cylindrical membrane cartridge K ₁ vertically arranged in the unit frame 12 immersed in the water treatment tank 43 will be described. Each of the cylindrical membrane cartridges K ₁ vertically arranged in the unit frame 12 in the water treatment tank 43 has a negative pressure acting on the inside thereof in the above-described manner, so that an outer peripheral portion and an inner peripheral portion of the cartridge main body A ₁ are formed. The both contaminated waters are filtered by suction, and the permeated water is extracted into the permeated water passage 9. Each of the outer and inner filtration cylindrical membranes 1 and 2 constituting the cartridge body A ₁ is
Because it is molded with RP resin, it has appropriate filtration pores, membrane strength and rigidity, and even if it is aerial from below in the vertically arranged state, it vibrates as if it were the same cylindrical ceramic material. There is no risk of damage. Further, in order to cylindrical film cartridge K ₁ is vertically disposed, ceramic filtration cylinder used in horizontal arrangement C. in aerated foam 101
Unlike this, the solid matter 8 in the sewage does not accumulate on the upper part of the filtration membrane, so that the effective filtration area can be used to the maximum.

Further, at the time of filtration, as shown in FIG. 5, from the diffusing pipe 46 installed on the bottom of the water treatment tank 43, upward from below the cartridge body A _1,
Bubbles are generated in parallel with this, and ascending sewage 11 is continuously generated in substantially the entire outer peripheral portion of each cartridge body A ₁ , that is, substantially the entire outer peripheral surface of the outer filtration cylindrical membrane 2. These air bubbles and rise sewage 11 in contact with substantially the entire outer periphery of the cartridge body A ₁ which are vertically arranged, and updates the film surface continuously. That is, since the solid matter 8 and the non-water-purifying component 10 are prevented from adhering thereto while being performed in parallel with the filtration operation, membrane clogging hardly occurs, and the filtration efficiency is increased. Note that the dashed arrows shown in FIG. 5 indicate passages of the permeated water.

On the other hand, the inner peripheral portion of each cartridge body A ₁
That is, also in the inner peripheral surface portion 1b of the inner filtration cylindrical membrane 1,
Suction filtration by a negative pressure load is proceeding simultaneously with aeration. The water flow guide 15 is provided at the lower end opening 1a of the inner filtration cylindrical membrane 1, so that the water flow guide 1
Bubbles and the rising sewage 11 collide with 5 a, and the flowing direction thereof is rectified and rises along the inner peripheral surface 1 b of the inner filtration cylindrical membrane 1. Therefore, ascending sewage 11 easily comes into contact with the inner peripheral surface portion 1b of the inner filtration cylindrical membrane body 1, so that the membrane surface is renewed, and the solid matter 8 in the sludge water is renewed.
In addition, the non-water-purifying component 10 can be prevented from adhering, and similarly to the outer peripheral surface portion, membrane clogging is less likely to occur at this portion, and the filtration efficiency is increased. Although the water flow guide 15 is only supported on the lower surface thereof by the guide mounting wire 64, the force exerted by the rising sewage 11 on the water flow guide 15 is uniform with respect to its axis. In addition, the water flow guide 15 can always maintain a target posture in which its axis is vertical. In addition, since the tip of the accumulation preventing portion 15b protrudes at an acute angle, even if the solid matter 8 such as sludge descends to the water flow guide 15, it can be prevented from sliding down therefrom and accumulating thereon. . Also, unlike the single-tube ceramic filtration cylinder 101, the cartridge body A ₁
Is a double tube structure, and almost the entire inner peripheral surface and the entire outer peripheral surface, since the suction filtration has become possible Naromaku portion, without increasing the installation space of the cylindrical film cartridge K _1, filtered The area can be increased. Moreover, the effect of vertical arranged cylindrical film cartridge K _1, the filtration membrane surface is effectively updated, operating efficiency of the filtration separation system using a cylindrical film cartridge K ₁ is enhanced.

The permeated water passage 9 of the cartridge body A ₁
Is constituted only by the space between the inner and outer filtration cylindrical membranes 1 and 2 (the upper and lower ring-shaped openings 7 are closed by the upper and lower caps 4 and 5). ing. In general, it is considered that a cylindrical molded product has a greater shape rigidity against a negative pressure applied to the inside thereof than a flat plate-shaped product. Is formed of the FRP resin film having a film strength not inferior to that of a ceramic material. The cylindrical shape can be maintained against the negative pressure load without providing a preventive member. For this reason, the configuration of the cylindrical membrane cartridge can be simplified. However, in order to reliably prevent deformation due to negative pressure, a water-permeable deformation preventing member may be provided between the filtration cylindrical membranes 1 and 2. Then, due to the negative pressure load, the permeated water from the permeated water channel 9 to the drain port provided with the drain pipe connector 6 reaches the water collection pipe 41 via the drain pipe 45, and is collected by the water treatment tank 43.
Is discharged from.

Further, the scrape deposits filtration membrane portion of the cylindrical film cartridge K _1, the unit frame 12 itself after pulled from the water treatment tank 43, a water discharge pipe connector 6 and connection of the drain pipe 45 with removal, by removing the floating preventing wire 62 from the unit frame 12, for each cylindrical film cartridge K _1, perform the scraping work.
The cartridge body A ₁ is because it is lightweight due to the resin material, even when pulling the cylindrical film cartridge K _1, good working efficiency, moreover can be easily handled. On the other hand, the conventional ceramic filtration cylinder 101 has a large weight, and the filtration cylinder 1
Since 01 had to be replaced, the work efficiency was poor.

[0037] Incidentally, a cylindrical film cartridge K ₁ according to the present embodiment is is of the double tube structure, C. in aerated foam, by using a cylindrical filtration element of the cartridge type vertical arrangement to a single Even with a tube configuration, a part of the above-described effects can be expected.

[0038] Subsequently, a detailed description of the construction of the cylindrical film cartridge K ₂ according to the second embodiment of the present invention. Cylindrical film cartridge K ₂ is the cartridge body A ₂ is constituted by a single pipe that constitutes it, moreover, is different with the cartridge body A ₁ in that it is formed in a tapered cylindrical shape, the components for information on how features and use, is of substantially the same as the cylindrical film cartridge K _1. The cylindrical membrane cartridge K ₂ has a cartridge main body A ₂ which is a filtration membrane for extracting permeated water into a permeated water passage 29 formed in an inner peripheral space thereof, and _two circular openings at the upper end and the lower end of the cartridge main body A _2. It comprises upper and lower caps 24 and 25 for closing and closing the 27 while maintaining watertightness, and a drain pipe connector 6 attached to a drain port of the upper cap 24 for discharging permeated water.

The cartridge body A ₂ has a tapered cylindrical shape, is formed of the FRP resin, and is used by being vertically arranged such that the large-diameter portion is upward. The FRP resin is the same filtering material as that described in the first embodiment, and as shown in FIG.
_2, in a manner similar to that described for the molding process of the cartridge body A _1, are molded using a central core 20 having a draft. In the molding of the cartridge body A _2, different from the mere draft, the core 20 in the tapered cylindrical shape having a large taper shape is used.

The upper end cap 24 is a circular cap slightly larger than the opening 27 above the cartridge body A ₂ , and has a cartridge inside the outer peripheral wall 24 a provided similarly to the upper end cap 4. fitted insertion upper part of the body a _2, both of which are fixed to each other via an adhesive (not shown). The drainage pipe connector 6 is attached to a through hole substantially at the center of the upper end cap 24 via a pair of nuts 67 and 68. The lower end cap 25 is a slightly larger circular cap from the lower end of the opening 27 of the cartridge body A _2, in the same manner as the upper end cap 24, the cartridge body A ₂ inside the outer peripheral wall 25a It is inserted and fitted to the lower end. A substantially conical concave portion 25b is provided at a substantially central portion of the lower end cap 25. The recess 25b is for fitting with a single tube cartridge support 19 described later.

The above-mentioned predetermined number of cylindrical membrane cartridges K ₂
With the large diameter portion of the tapered shape facing upward, a predetermined gap d ₁ is formed at the upper end of the adjacent cylindrical membrane cartridge K _2.
Are arranged vertically and stored in the unit frame 12. A pair of longitudinal side plates 1 of the unit frame 12
At the lower end of the support frame 6, a plurality of support mounting wires 71 are laid in the transverse direction at predetermined intervals along the longitudinal direction of the unit frame 12, and each support mounting wire 71 the single tube cartridge support 19 of substantially conical shape, is mounted at the arrangement pitch and the same pitch of the cylindrical film cartridge K _1. Each of the cylindrical membrane cartridges K ₂ is supported by the single tube cartridge support 19 fitted in the concave portion 25 _b of the lower end cap 25. In addition, cylindrical membrane cartridge K
₂ is pressed by a pair of anti-floating wires 72 similarly laid horizontally at the upper end portions of the pair of longitudinal side plates 16 at the upper end cap 24 portion,
It is in a floating prevention state. The cartridge main body A ₂ of the cylindrical film cartridge K ₂ are the tapered cylindrical, as shown in FIG. 8, in a state where the vertical arrangement, the gap between adjacent cylindrical film cartridge K ₂ has an upper end from the lower end It gradually narrows toward. In FIG. 8,
d ₂ indicates the gap between the lower end portion of the adjacent cylindrical film cartridge K _2.

Each of the cylindrical membrane cartridges K ₂ vertically arranged in the unit frame 12 is the cylindrical membrane cartridge K.
_{As in 1} , by applying a negative pressure inside
The sewage in the outer peripheral portion of the cartridge main body A ₂ by suction filtration, extracting the permeate in the permeate water channel 29. At this time, from the aeration tube 46, toward the upper from the lower side of the cartridge body A _2, increases wastewater 11 containing air bubbles is generated. Gaps between the cylindrical film cartridge K ₂ adjacent to each, since gradually becomes narrower upward from below, their bubbles and rise sewage 11 is forced to collide with the entire outer peripheral portion of the cartridge main body A ₂ As a result, the membrane surface is continuously renewed to prevent solid matter from adhering to the membrane surface, so that membrane clogging hardly occurs and filtration efficiency is improved.

In this embodiment, a single-tube circle is used.
Tubular membrane cartridge K_TwoWas explained, but in the case of a composite pipe
In this case, filter the outermost filtration cylindrical membrane into a cartridge.
Body A _TwoAs having the same taper shape as
The same effect can be obtained by using
It is something that can be done.

Subsequently, referring to FIG. 10 to FIG.
And a cylindrical membrane cartridge K according to the third embodiment of the present invention.
_ThreeWill be described in detail. The cylindrical membrane cartridge
Di K _Three, The cartridge body A constituting the
_ThreeIs an outer cartridge body A having a double tube structure.₃₁And that
Concentrically arranged inside the tube, smaller single tube structure
Inside cartridge body A₃₂It is composed of Previous
Outer cartridge body A₃₁Is the cylinder of the first embodiment
Membrane cartridge K₁Cartridge body A according to ₁Same as
And a front part at the center of the sewage passage 52 on the inner periphery thereof.
Inner cartridge body A₃₂Insert the method described below
And the cartridge body A₁Even more than
The configuration is such that the excess surface area is increased. Ma
The cylindrical membrane cartridge K_ThreeThe function of each component related to
For the method of use, refer to the cylindrical membrane cartridge of the first embodiment.
Di K₁Since it is almost the same as
Di K_ThreeIn the description, the cylindrical membrane cartridge K₁
The constituent members corresponding to
Is described with "".

The cylindrical membrane cartridge K ₃ is provided with a permeate channel 39.
The cartridge main body A ₃ , which is a filtration membrane for extracting permeated water, and the opening 37 at the upper end thereof are closed while maintaining watertightness, and the outer and inner cartridge main bodies A ₃₁ , A An upper end cap 34 for connecting and integrating the upper end ₃₂ with each other and an opening 37 at the lower end.
A lower end cap 35 that keeps watertight and is closed, and a drain pipe connector 36 attached to a drain port of the upper end cap 34 for discharging permeated water. The permeate channel 39 includes an outer permeate channel 9 ′ formed in a space between the inner and outer filtration cylindrical membranes 1 ′ and 2 ′ constituting the outer cartridge main body A ₃₁ and an inner cartridge main body A ₃₂ . And an inner permeation channel portion 59 formed on the inner peripheral portion of the filtration cylindrical membrane body 3. Further, each opening 37 at the upper end and the lower end of the cartridge body A ₃ is
A ring-shaped outer opening 7 ′ between the inner and outer filtration cylindrical membranes 1 ′, 2 ′, and a circular inner opening formed on the inner periphery of the filtration cylindrical membrane 3 inside 57.

The upper end cap 34 for closing the upper opening 37 while maintaining watertightness is provided with the outer opening 7 '.
An outer upper end cap portion 4 ′ that keeps watertight and closes,
It is formed between the inner upper end cap portion 54 that keeps the inner inner opening portion 57 watertight and closed, and the outer and inner upper end cap portions 4 ′ and 54, and is formed in a radial direction to connect the two. It is composed of three provided rod-shaped connecting members 51. As shown in FIG. 11, the upper end cap 34 is provided inside the outer peripheral wall portions 4'a and 54a of the outer and inner upper end cap portions 4 'and 54, similarly to the above-described upper end cap 4. The outer peripheral portions of the outer and inner cartridge body portions A ₃₁ and A ₃₂ are inserted and fitted, and the outer cartridge body portion is provided on an inner peripheral wall portion 4 ′ b provided inside the outer upper end cap portion 4 ′. the inner peripheral portion of part a ₃₁ is fitted inserts.

Further, in the state where the upper opening 37 is closed in a watertight manner by using the upper end cap 34, the outer and inner cartridge main bodies A
₃₁ and A ₃₂ are integrally connected via an upper end cap 34. Also, outer and inner upper end cap portions 4 ', 5
4 is provided with a through hole for a drain port for attaching the drain pipe connector 36. In addition, the drain pipe connector 36 is
An outer drainage pipe connecting part 6 'attached to the drainage port of the outer upper end cap part 4', and an inner part attached to the drainage port of the inner upper end cap part 54 and connected to the outer drainage pipe connecting part 6 'by a pipeline. The drain pipe connecting portion 56 is provided, and is attached to the upper end cap 34 in the same manner as the drain pipe connecting tool 6 described above.

On the other hand, as shown in FIG.
Lower end cap 35 closing and closing mouth 37 while maintaining watertightness
Is to close the lower opening 7 'while keeping it watertight.
The side lower end cap portion 5 'and the lower opening portion 57 are similar.
And the lower end cap portion 55 that is closed
I have. Further, the lower end cap 35 is located below each of the outer side and the inner side.
The respective outer peripheral wall portions 5'a, 5 provided on the end cap portions 5 ', 55
5a and the inner peripheral wall 5'b of the outer lower end cap 5 '.
Are the outer and inner cartridge bodies A, respectively. ₃₁,
A₃₂Are individually inserted and fitted.

Next, the operation of filtering sewage (water to be filtered) using the cylindrical membrane cartridge K ₃ vertically arranged in the unit frame 12 immersed in the water treatment tank 43 will be described. Each of the cylindrical membrane cartridges K ₃ vertically disposed in the unit frame 12 in the water treatment tank 43 is subjected to a negative pressure therein, so that the waste water on both the outer peripheral portion and the inner peripheral portion of the outer cartridge main body A ₃₁ is discharged. If, by suction filtration sewage in contact with the outer peripheral portion of the inner cartridge body unit a _32, the transmission waterway 3
9. Extract the permeate. The permeated water is discharged to the water collecting pipe 41 via the drain pipe connector 36.

As described above, the cylindrical membrane cartridge K ₃ is
In addition to the filtration surface area of the outer cartridge body A ₃₁ corresponding to the cartridge body A ₁ described above, the permeated water increases by the filtration surface area of the inner cartridge body A ₃₂ added to the inner periphery thereof, so that the installation space is increased. Without doing so, the filtration area can be increased. Thus, the cylindrical film further than when using a cartridge K _1, operating efficiency of the filtration separation system using a cylindrical film cartridge K ₃ is Takameraru.

[0051]

According to the cylindrical membrane cartridge of the present invention, the cylindrical cartridge body constituting the cartridge is made of an FRP resin membrane having fine continuous pores with a required thickness secured. Therefore, it is lighter than the conventional ceramics, and the handling is easy. As a result,
The burden on maintenance is reduced, and the reliability of the filtration / separation system can be improved. Further, when a problem occurs in the cylindrical membrane cartridge, only one of them can be easily replaced. Furthermore, by forming the outer periphery of the cartridge body into a tapered cylindrical shape, when the sewage containing air bubbles rises, it flows forcibly along the outer peripheral surface of the cartridge body, so that the non-purified water component hardly adheres. Therefore, good filtration performance can be maintained for a long time.

Further, since each of the cylindrical membrane cartridges is independently arranged vertically and used, and the aeration flow uniformly spreads over the entire outer peripheral surface of the cylindrical filtration section.
Non-purified water components are less likely to adhere to the cartridge body. Furthermore, by disposing a water flow guide at the lower end opening of the cartridge main body, it is possible to prevent non-purified water components from adhering to the inner peripheral surface of the main body of the cylindrical membrane cartridge, thereby improving the efficiency of the filtration operation. it can.

[Brief description of the drawings]

1 is a partial plan view of a state where a large number of cylindrical film cartridge K ₁ to the unit frame 12 is vertically arranged.

FIG. 2 is a partial perspective view of a similar state.

FIG. 3 is a partial perspective view of the same state as viewed from the bottom side.

4 is an exploded perspective view of a cylindrical film cartridge K _1.

5 is a longitudinal sectional view of a use state of the cylindrical film cartridge K _1.

[6] unit frame 12 to the cylindrical film cartridge K ₁ and the vertical arrangement, a front sectional view of the submerged state in the water treatment tank 43.

7 is an exploded perspective view of a cylindrical film cartridge K _2.

FIG. 8 is a longitudinal sectional view of the same use state.

9 is a perspective view showing a molding method of the cartridge body A _2.

10 is an exploded perspective view of a cylindrical film cartridge K _3.

11 is a partial enlarged perspective view of the upper end portion of the cylindrical film cartridge K _3.

12 is a partial enlarged perspective view of the lower end portion of the cylindrical film cartridge K _3.

13 is a longitudinal sectional view of a use state of the cylindrical film cartridge K _3.

FIG. 14 is a plan sectional view of a filtration module M using a ceramic filtration cylinder.

FIG. 15 is a sectional view taken along line XX of FIG. 14;

[Explanation of symbols]

K _{1 to} K ₃ : cylindrical membrane cartridges A _{1 to} A ₃ : cartridge body d ₁ : gap at the upper end of adjacent cylindrical membrane cartridge K ₁ d ₂ : gap at the lower end of adjacent cylindrical membrane cartridge K ₁ 1 : Inner filtration cylindrical membrane 2: outer filtration cylindrical membrane 4, 24, 34: upper end cap 5, 25, 35: lower end cap 11: rising sewage 15: water flow guide

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B01D 71/48 B01D 29/04 510B 530A

Claims (6)

[Claims] 1. A filtration / separation cylindrical membrane cartridge which is used by being immersed in a water treatment tank for purifying water, filters and separates non-purified water components through a cylindrical filtration membrane, and extracts permeated water. The openings at both ends of a cylindrical cartridge body composed of a resin film made of FRP having continuous fine pores are closed in a watertight manner by caps, and are individually and vertically arranged in a unit frame. Filtration and separation cylindrical membrane cartridge characterized by being used. 2. The cartridge body is formed in a tapered cylindrical shape, and is vertically arranged such that a large diameter portion is located upward.
The cartridge for filtration and separation according to claim 1, wherein a gap between adjacent cartridges is gradually narrowed upward. 3. A filtration / separation cylindrical membrane cartridge which is used by being immersed in a water treatment tank for purifying water, filters and separates non-purified water components through a cylindrical filtration membrane, and extracts permeated water. The cartridge body has a double-pipe structure in which two inner and outer filtration membranes are concentrically arranged, and the space between the two filtration membranes serves as a passage for permeated water. The ring-shaped openings at both ends of the cartridge body are closed while being kept watertight by a cap, and the two inner and outer filtration cylindrical membrane bodies constituting the cartridge body are constituted by FRP resin membranes having continuous fine pores. A filtration / separation cylindrical membrane cartridge characterized by being used independently in a frame and vertically arranged. 4. An inverted conical water flow guide for allowing ascending sewage to flow along the inner peripheral surface of the filtration cylindrical membrane is disposed at the lower end opening of the inner filtration cylindrical membrane constituting the cartridge body. The filtration / separation cylindrical membrane cartridge according to claim 3, wherein the cartridge is provided. 5. The filtration cylindrical membrane body outside the cartridge body is formed in a tapered cylindrical shape, and is vertically arranged so that a large diameter portion is upward, and a gap between adjacent cartridges is directed upward. The filtration and separation cylindrical membrane cartridge according to claim 3 or 4, wherein the cartridge is formed to be gradually narrower. 6. Inside the inner cylindrical filtration membrane constituting the cartridge body having a double-tube structure, another cartridge body having a single-tube structure is disposed substantially concentrically. 6. The filtration and separation cylindrical membrane cartridge according to claim 3, wherein the cartridge is integrally connected at a cap portion.