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Hollow fiber membrane module, process for manufacturing the same, hollow fiber membrane module assembly and method of purifying suspended water with use thereof

A fiber membrane and module technology, which is applied in the field of external pressure hollow fiber membrane modules, can solve the problems of uneven air or water supply, complex assembly operations, and difficulty in supplying raw water to the outer periphery of the membrane bundle, etc., so as to improve the effective utilization rate. , The effect of excellent discharge and low energy consumption

Inactive Publication Date: 2010-03-03
ASAHI KASEI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Patent Document 5 provides a structure similar to Patent Documents 3 and 4. If the air inlet holes observed in the cross section are not opened symmetrically and evenly spaced with the central axis, the supply of air or water will not be uniform, but symmetrical and equal. When openings are arranged at intervals, the same complicated assembly work as document 4 is required
[0014] In addition, Patent Document 6 discloses a structure in which a large number of raw material water introduction holes are connected to the other side from a portion corresponding to a raw material water supply main pipe part perforate

Method used

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  • Hollow fiber membrane module, process for manufacturing the same, hollow fiber membrane module assembly and method of purifying suspended water with use thereof
  • Hollow fiber membrane module, process for manufacturing the same, hollow fiber membrane module assembly and method of purifying suspended water with use thereof
  • Hollow fiber membrane module, process for manufacturing the same, hollow fiber membrane module assembly and method of purifying suspended water with use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 4 and comparative example 3

[0197] The present invention will be described below through experimental examples, examples and comparative examples. In addition, in the comparison of the performance of the hollow fiber membrane module assembly used in the past, a multi-series evaluation device was used for comparison, in which the raw material water supply pump and the backwash water supply pump were independent, and the raw material water tank, permeation water tank (also used as the backwash water tank) Washing sink) is universal. In addition, this evaluation device can control each series of raw water supply pumps with inverters, and can monitor power consumption. In addition, except for Example 4 and Comparative Example 3, river surface water was used as raw material water. (Evaluation of Example 4 and Comparative Example 3 using a closed system using a model liquid)

[0198] Turbidity and TOC in raw water were measured by the following methods.

[0199] Turbidity: The measuring device used UV-160A ...

experiment example 1

[0202] First, experiments were performed on the appropriate hole diameter, hole position, and number of raw material water introduction holes. Prepare a polyvinyl chloride pipe 72 having a nominal diameter of 20 mm (outer diameter 26 mm, approximate inner diameter 20 mm) shown in JIS K6742, such as Figure 13 As shown in (1), six circular holes 73 of 5 mm are arranged at intervals of 10 mm on the side, an end cap 71 is installed on one side of the polyvinyl chloride pipe 72, and a T-shaped joint 74 is installed on the other side. Prepare such test parts. A pressure gauge is installed on a right-angle branch of the T-shaped joint, and a joint is installed on the other branch so as to be able to supply water or compressed air (substances with such a configuration are collectively referred to as supply pipes below). Using this supply pipe, 27 [L / min] of water was supplied under atmospheric pressure, and the drainage from each hole was uniform. At this time, in order to supply 2...

experiment example 2

[0204] In addition to the circular holes of 5.5mm, 6.0mm, 6.5mm, and 7.0mm at intervals of 15mm on the side, prepare the same as Experimental Example 1. Figure 13 A polyvinyl chloride pipe with a nominal diameter of 20 mm as shown in (2) was used as a supply pipe. Next, 27 [L / min] of water was supplied under atmospheric pressure, and the drainage from each hole was uniform. At this time, in order to supply 27 [L / min] of water, the water supply pressure indicated by the manometer needs to be 17 [KPa]. Then using the same supply pipe, under water about 30cm at 1.2[Nm 3 / Hr] to supply compressed air with a pressure of 200 [KPa], and the air is evenly discharged from each hole.

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Abstract

A hollow fiber membrane module characterized by having a tubular module case; a bundle of a multiplicity of hollow fiber membranes housed in the module case; adhesively fixing parts for fixing both side edge portions of the bundle in the module case in such a fashion that raw fluid can pass through the interior of the hollow fiber membranes; a permeated fluid communication part adapted for passable connection between both end faces outside the adhesively fixing parts by a pipe of diameter significantly larger than that of the hollow fiber membranes; and a raw fluid distribution supply part capable of feeding the raw fluid into the module case at one of the adhesively fixing parts, wherein the raw fluid distribution supply part has multiple raw fluid introduction holes made in hollow fibermembrane interspaces so as to be able to supply the raw fluid along the longitudinal direction of the hollow fiber membranes.

Description

technical field [0001] The present invention relates to an external pressure type hollow fiber membrane module and the like which can be used in various fields, especially in the field of water treatment such as deturbidity of river water, lake water, ground water, and the like. Specifically, the present invention relates to a hollow fiber membrane module and a manufacturing method thereof, a hollow fiber membrane module assembly and a method for purifying turbid water using the hollow fiber membrane module assembly, wherein the hollow fiber membrane has an effect on permeation The effective length of the contribution increases, the effective utilization of the membrane area increases, and the permeation performance per unit volume increases. Background technique [0002] Hollow fiber membrane modules can ensure a large membrane area per unit volume, so they are used in many fluid treatment fields, such as desalination of salt water or seawater using reverse osmosis membrane...

Claims

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Application Information

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IPC IPC(8): B01D63/02B01D63/00C02F1/44
CPCB01D2313/26C02F1/445C02F1/44B01D63/022B01D63/02B01D2313/10B01D63/021C02F1/444B01D65/003B01D63/024
Inventor 谷口超石桥让
Owner ASAHI KASEI KK
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