CN201020345Y - Submerged columnar hollow fiber membrane module - Google Patents

Abstract

A submerged columnar hollow fiber membrane module used for water purification and sewage treatment. One end of the hollow fiber bundle is sealed and consolidated in the end, and a group of diversion holes is formed on the end surface between the hollow fiber bundles in the end to communicate with the mixed liquid flow channel inside the membrane module; the other end of the hollow fiber bundle is reinforced by The distributor is divided into fiber bundle clusters, and consolidated with the drum, the mixed liquid flow channel is formed between each fiber bundle cluster, and at least one support rod is arranged between the end and the reinforced distributor; Head with permeate outlet. The membrane module does not contain a shell, and is directly immersed in the tank containing the mixed liquid, and the permeate is generated by suction. Its characteristics are that it can realize the uniform distribution of the mixed liquid, clean the membrane modules in place, have no dead angle, prevent the adhesion between fibers, the system is easy to manage and maintain, and the filtration performance is stable. It can be applied to water purification and membrane bioreactors.

Description

Submerged columnar hollow fiber membrane module

【Technical field】

The utility model belongs to the technical field of filtration or purification treatment of water or liquid media, in particular relates to an immersed columnar hollow fiber membrane module for water purification and sewage treatment, and is especially suitable for membrane bioreactors.

【Background technique】

At present, hollow fiber membranes have been widely used to filter or purify water or liquid media. Raw water permeates through the micropores of the hollow fiber membrane to become purified water. The core-shell membrane module with a shell is widely used in the market. In recent years, the submerged membrane module has been developed. It is characterized in that the membrane module has no shell, and the membrane module is directly placed in the container containing the liquid to be separated. The purpose of generating permeate is achieved by suction. During use, the suspended particles in the raw water are continuously concentrated on the surface of the hollow fiber membrane, resulting in a decrease in efficiency. Therefore, cleaning is required. Hollow fiber membrane modules used in membrane bioreactors mainly adopt immersion curtain membrane modules, which have uneven distribution of gas and liquid, hollow fibers are easily adhered by sludge, cumbersome cleaning operations, difficult to clean in situ, and difficult to repair and maintain hollow fiber membrane modules , The hollow fiber membrane is easily damaged by foreign matter, resulting in a reduction in the service life of the membrane.

【Content of invention】

The purpose of the utility model is to solve the above-mentioned deficiencies in the prior art, and provide a submerged columnar hollow fiber membrane module.

The submerged columnar hollow fiber membrane module provided by the utility model includes hollow fiber bundles, ends, and sleeves, one end of the hollow fiber bundles is sealed and dispersedly consolidated in the ends, and the hollow fiber bundles in the ends are A group of diversion holes is formed on the end surface to communicate with the flow channel of the mixed liquid inside the membrane module; the other end of the hollow fiber bundle is divided into fiber bundle clusters by a reinforcing distributor, and consolidated with the drum, and a mixture is formed between each fiber bundle cluster. There is at least one support rod between the end and the reinforced distributor; the head with the permeate outlet and the backwash liquid inlet is installed outside the cylinder, and the quick-installed The snap ring locks the connection.

The reinforced distributor is composed of a distribution plate and a support rod positioning groove. The distribution plate can be distributed radially, and the number of distribution plates is 4 to 16. The distribution plates in the reinforced distributor can also be distributed in a net shape.

The working process is: under the action of gas, the feed liquid flows into the membrane module evenly from the diversion hole at one end of the membrane module, flows out at the top of the module, and the permeate passes through the outer surface of the hollow fiber membrane under the action of suction. The pores and enter the cavity of the hollow fiber to flow out, realizing the filtration and separation process of the feed liquid.

Advantage and positive effect of the utility model:

The utility model can realize uniform distribution of feed liquid (including liquid and gas), and improve the operation and cleaning efficiency of the membrane. Stable performance.

【Description of drawings】

Figure 1 is a general structural diagram of a hollow fiber membrane module,

Figure 2 is a side view of the end face of the deflector,

Figure 3 is an end side view of the distributor.

【Detailed ways】

As shown in Figure 1, the submerged columnar hollow fiber membrane module includes a hollow fiber bundle 1, one end of the hollow fiber bundle 1 is sealed with resin and dispersedly cast in the end 5, the end surface between the hollow fiber bundles in the end A group of guide holes 12 communicating with the mixed liquid flow channel 9 inside the membrane module is formed, and the ends and the end faces of the hollow fiber bundles inside constitute the mixed liquid guide plate 2 together. The other end of the hollow fiber bundle is divided into fiber bundle clusters by the reinforcement distributor 3, and is cast and bonded with the sleeve 6 by resin, and a mixed liquid flow channel 9 is formed between each fiber bundle cluster, and the fiber port at this end is cut, and the to produce permeate. At least one support rod 4 (two support rods in this example) is arranged between the end and the reinforced distributor; a head 7 with a permeate outlet 10 and a backwash inlet 11 is installed outside the sleeve 6, The fast-loading snap ring 8 is locked and connected between the sleeve and the head.

As shown in FIG. 2 , the guide plate 2 is composed of a plurality of guide holes 12 , the distribution density of the guide holes is 500-2000 pieces/m ² , and the diameter of the holes is 5-20 mm.

As shown in FIG. 3 , the distributor 3 is composed of radial distribution plates 13 and positioning grooves 14 for support rods, and the number of distribution plates is 4 to 16 in various forms. The distributor is used to divide the fiber bundle evenly.

The distribution plates in the reinforced distributor can also be distributed in a net shape (figure omitted).

The membrane module does not contain shell material, and is directly immersed in the tank containing the mixed liquid, and the permeate is generated by suction.

Working process: Under the action of gas, the feed liquid flows into the membrane module evenly from the diversion hole 12 at one end of the membrane module, and flows out at the top of the module. The permeate passes through the outer surface of the hollow fiber membrane under the action of suction The pores enter the cavity of the hollow fiber and flow out, and gather in the cavity of the head, and flow out from the outlet 10 of the permeate. When the membrane module needs to be backwashed, the backwash liquid enters the membrane module from the backwash liquid inlet 11 on the side of the head.

Claims (7)

1. immersion column hollow fiber film assembly, comprise hollow fiber bundle, termination and sieve tube, it is characterized in that: the end sealing of hollow fiber bundle also is cemented in the termination, forms one group of pod apertures that is communicated with membrane module internal mix liquid flow channel on the end face in the termination between the hollow fiber bundle; The other end of hollow fiber bundle is divided into the fiber fascicle by strengthening distributor, and fixed with sieve tube, forms the mixed liquor flow channel between each fiber fascicle, is provided with a support bar at least between termination and reinforcement distributor; Sieve tube is installed on it outward and is provided with the end socket of penetrating fluid outlet.

2. immersion column hollow fiber film assembly according to claim 1 is characterized in that: strengthen distributor and be made of distribution grid and support bar locating slot.

3. immersion column hollow fiber film assembly according to claim 2 is characterized in that: the distribution grid of strengthening in the distributor is radial, and distribution grid quantity is 4 to 16.

4. immersion column hollow fiber film assembly according to claim 2 is characterized in that: the distribution grid of strengthening in the distributor is net distribution.

5. according to claim 1 or 2 or 3 or 4 described immersion column hollow fiber film assemblies, it is characterized in that: tightly connect by the quick-mounting clamp ring lock between sieve tube and the end socket.

6. according to claim 1 or 2 or 3 or 4 described immersion column hollow fiber film assemblies, it is characterized in that: be provided with the backwash liquor inlet on the end socket simultaneously.

7. according to claim 1 or 2 or 3 or 4 described immersion column hollow fiber film assemblies, it is characterized in that: the end of hollow fiber bundle sealing in the termination and be cemented in the termination of dispersion.

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