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Method for calculating effective membrane area of universal reverse osmosis membrane element

A technology of reverse osmosis membrane and calculation method, applied in semi-permeable membrane separation, chemical instruments and methods, osmosis/dialysis water/sewage treatment, etc., can solve the scrapping of membrane elements and increase the time and difficulty of obtaining the effective membrane area of ​​membrane elements , increase the cost of obtaining the effective membrane area of ​​the membrane element, etc., to achieve the effect of fast and accurate calculation and reduce the design cost

Active Publication Date: 2021-03-16
中芯膜(北京)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As one of the core components of water treatment, reverse osmosis membrane elements are the key influencing factors to achieve deep filtration in the field of water treatment. For reverse osmosis membrane elements, stable membrane element performance is particularly important, and reverse osmosis membrane elements are accurate and effective. Membrane area is an important factor to ensure the stable performance of membrane elements. At present, when reverse osmosis membrane manufacturers design each type of membrane element, they need to roll out the membrane element of this type. It is disassembled, and then manually measure the effective length and width of a single sheet of the membrane element, and then calculate the real effective membrane area, especially when the membrane element has a large number of pages, this calculation method completely relying on manual measurement increases the technical personnel to obtain the effective membrane area of ​​the membrane element. time and difficulty, because the membrane element is scrapped after dismantling, it also greatly increases the cost of obtaining the effective membrane area of ​​the membrane element

Method used

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  • Method for calculating effective membrane area of universal reverse osmosis membrane element
  • Method for calculating effective membrane area of universal reverse osmosis membrane element
  • Method for calculating effective membrane area of universal reverse osmosis membrane element

Examples

Experimental program
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Effect test

Embodiment 1

[0031] refer to Figure 1-3 As shown, a method for calculating the effective membrane area of ​​a general-purpose reverse osmosis membrane element includes the following steps:

[0032] Step 1: Determine the dimensional parameters of the membrane element 1Q; the dimensional parameters include the length Z of the central rod 3 of the membrane element 1, the trimming size H, the page number J of the membrane element 1, and the length E of the membrane blanking;

[0033] Step 2: Determine the width A of the total glue line 2 after winding, the width B of the leftover glue line 2 after trimming, and the length L of the diaphragm outside the primer; when determining the width of each glue line 2 for the first time, the values ​​​​of A, B, and L can be determined by Formula 1, Formula 2, Formula 3 to determine:

[0034] Formula 1: A=V*6

[0035] Formula 2: L=A / 2

[0036] Formula 3: B=(B1+B2+B3+…Bn) / n

[0037] Among them, V represents the width of the unextended glue line 2 when ...

Embodiment 2

[0045] Embodiment 2 includes all the technical features in Embodiment 1, specifically including:

[0046] A method for calculating the effective membrane area of ​​a general-purpose reverse osmosis membrane element includes the following steps:

[0047] Step 1: Determine the dimensional parameters of the membrane element 1Q; the dimensional parameters include the length Z of the central rod 3 of the membrane element 1, the trimming size H, the page number J of the membrane element 1, and the length E of the membrane blanking;

[0048] Step 2: Determine the width A of the total glue line 2 after winding, the width B of the leftover glue line 2 after trimming, and the length L of the diaphragm outside the primer; when determining the width of each glue line 2 for the first time, the values ​​​​of A, B, and L can be determined by Formula 1, Formula 2, Formula 3 to determine:

[0049] Formula 1: A=V*6

[0050] Formula 2: L=A / 2

[0051] Formula 3: B=(B1+B2+B3+…Bn) / n

[0052] Am...

Embodiment 3

[0060] Embodiment three includes all technical characteristics in embodiment two, specifically includes:

[0061] A method for calculating the effective membrane area of ​​a general-purpose reverse osmosis membrane element includes the following steps:

[0062] Step 1: Determine the dimensional parameters of the membrane element 1Q; the dimensional parameters include the length Z of the center rod 3 of the membrane element 1, the trimming dimension H, the page number J of the membrane element 1, the cutting length E of the membrane, and the trimming dimension H refers to the central rod 3 The distance from the outermost side to the end face of the film roll on the same side;

[0063] Step 2: Determine the width A of the total glue line 2 after winding, the width B of the leftover glue line 2 after trimming, and the length L of the diaphragm outside the primer; when determining the width of each glue line 2 for the first time, the values ​​​​of A, B, and L can be determined by ...

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Abstract

The invention discloses a method for calculating the effective membrane area of a universal reverse osmosis membrane element, and relates to the technical field of reverse osmosis membrane element rolling, which comprises the following steps of: calculating the effective membrane area of the universal reverse osmosis membrane element according to the predetermined length of a central rod of the membrane element, the trimming size, the page number of the membrane element, the membrane blanking length, the unextended glue line width before gluing before rolling and the trimmed leftover glue linewidth; the method comprises the following steps: calculating the total adhesive line width after winding of the membrane element and the length of a membrane except a primer through a relational expression, calculating the effective edge adhesive width and the primer width of the membrane element through the relational expression according to the total adhesive line width after winding of the membrane element and the leftover adhesive line width after end trimming, and finally calculating and determining the effective membrane area of the membrane element according to the relational expression. According to the calculation method, the effective membrane areas of various membrane elements can be rapidly and conveniently calculated, the efficiency of obtaining the effective membrane areas is improved by 90% or above compared with a traditional measurement method, in addition, the calculation method enables the obtaining cost of the effective membrane areas of the membrane elements to bereduced to 0% from 100%, and the design cost of membrane products is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of reverse osmosis membrane element rolling, in particular to a method for calculating the effective membrane area of ​​a general-purpose reverse osmosis membrane element. Background technique [0002] As one of the core components of water treatment, reverse osmosis membrane elements are the key influencing factors to achieve deep filtration in the field of water treatment. For reverse osmosis membrane elements, stable membrane element performance is particularly important, and reverse osmosis membrane elements are accurate and effective. Membrane area is an important factor to ensure the stable performance of membrane elements. At present, when reverse osmosis membrane manufacturers design each type of membrane element, they need to roll out the membrane element of this type. It is disassembled, and then manually measure the effective length and width of a single sheet of the membrane element, and then cal...

Claims

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Application Information

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IPC IPC(8): G06F30/17B01D63/06C02F1/44
CPCB01D63/06C02F1/441G06F30/17
Inventor 王美李海玲许家旺王双
Owner 中芯膜(北京)科技有限公司
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