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MBR membrane system

A membrane system and membrane technology, applied in the field of membrane bioreactors, can solve the problems that affect the effective filtration area of ​​MBR membrane modules, cannot well prevent the diaphragm from swinging, and the diaphragm shape design is not reasonable.

Inactive Publication Date: 2017-02-22
CHENGDU MEIFUTE MEMBRANE TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem of hindering the flow of water in setting the spacer net, and it cannot prevent the swing of the diaphragm well
In addition, the shape design of the diaphragm in the MBR membrane module is not reasonable, which affects the effective filtration area of ​​the MBR membrane module on the unit floor area.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as Figures 1 to 6 In the MBR membrane module shown, the membrane element 410 adopts a square membrane 411 with the same shape and size. The length or width of the diaphragm 411 is 320 mm. The four corners of the diaphragm 411 are all rounded with a radius of 15 mm. The center of the diaphragm 411 is provided with a through hole 411d. A support plate 411f with a thickness of 1.2mm is provided in the cavity 411c of the diaphragm 411. The support plate 411f is a square solid plate, and the four corners of the support plate 411f are respectively provided with chamfers. An assembly hole 411g is provided at the center of the support plate 411f, and the assembly hole 411g is coaxially arranged with the through hole 411d. The length or width of the square support plate 411f is 20mm smaller than the length or width of the square diaphragm 411, so as to reserve the position of the welding scar 411i. The membrane 411 is made by stacking the support plate 411f and the sec...

Embodiment 2

[0046] Replace the support rod 100 of Embodiment 1 with a solid rod. On this basis, the structure of the second positioning device 300 is adjusted accordingly, so that the flow path formed by the guide gap 430 and the matching gap between the seal ring body 421a and the support rod 100 (that is, the flow path provided on the surface of the support rod 100 The filtered water in the diversion channel) directly flows out from the second support plate 310 of the second positioning device 300 . The specific method is to set diversion holes and water outlets on the second support plate 310 , and connect the diversion holes with the diversion channels provided on the surface of the support rod 100 .

Embodiment 3

[0048] Such as Figures 6 to 7 As shown, the membrane 411 of the embodiment 1 is improved, specifically, support nets 411h are provided on the inside of the first filter membrane 411a and the inside of the second filter membrane 411b. Such as Figure 7 As shown, the improved membrane 411 is after stacking the support net 411h, the support plate 411f, the support net 411h and the second filter film 411b sequentially on the first filter film 411a, and then the edge of the first filter film 411a and the second filter film The edges of the two filter films 411b are heat-processed and fused together, and the edges of the support net 411h inside the first filter film 411a and the support net 411h inside the second filter film 411b are preferably combined in the welding scar 411i. The support net 411h can further support the first filter film 411a and the second filter film 411b, and can better prevent the deformation of the diaphragm 411 when used in conjunction with the support pl...

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Abstract

The invention discloses an MBR membrane element of an improved structure and an MBR membrane system with MBR membrane elements. The MBR membrane system comprises a membrane assembly horizontal placement support, and a plurality of MBR membrane assemblies are distributed on the membrane assembly horizontal placement support. Each MBR membrane assembly comprises a supporting rod of a hollow structure or solid structure, a first positioning device at one end of the supporting rod, a second positioning device at the other end of the supporting rod, and a membrane core arranged on the supporting rod and axially positioned between the first positioning device and the second positioning device. The membrane cores comprise a plurality of membrane elements sequentially arranged on the supporting rods in a sleeving mode and arranged at intervals in the axial direction of the supporting rods, and sealing devices matched with the membrane elements. Each membrane element comprises a membrane. Each membrane comprises a cavity formed between a first filtering thin film and a second filtering thin film. Anti-deviation supporting structures are arranged in the cavities.

Description

technical field [0001] The present invention relates to the technical field of membrane bioreactor (Membrane Bio-Reactor, referred to as MBR), in particular to MBR membrane module, MBR membrane element and MBR membrane system. Background technique [0002] The Chinese patent application document with the publication number CN105617865A (hereinafter referred to as the reference) applied by the applicant of the present application describes a new type of high-efficiency filtration water treatment membrane stack, which actually belongs to the submerged MBR membrane module. The MBR membrane module disclosed in the reference literature effectively avoids the bonding between the membranes by setting a spacer net between adjacent membranes, and improves the water treatment efficiency and the service life of the membranes. However, there is a problem of hindering the flow of water in setting the spacer net, and it cannot prevent the swing of the diaphragm well. In addition, the sha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12
CPCC02F3/1273Y02W10/10
Inventor 宋岱峰韩亮
Owner CHENGDU MEIFUTE MEMBRANE TECHNOLOGY CO LTD
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