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Reverse osmosis membrane module pollution in-situ monitoring device and monitoring method

A reverse osmosis membrane module, reverse osmosis membrane technology, applied in the field of reverse osmosis membrane module contamination in-situ monitoring devices, can solve the problems of high additional operating costs, increased pressure drop in the feed channel, high pumping and cleaning costs, etc. The effect of avoiding defects and deficiencies, reducing inspection requirements, and low inspection costs

Pending Publication Date: 2022-04-12
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Membrane filtration is susceptible to pollutants: accumulation on the surface of the membrane unit, one of the effects is an increase in the pressure drop of the feed channel, resulting in higher pumping and cleaning costs, which eventually leads to early membrane replacement
Reverse osmosis fouling occurs widely in industry and brings high additional operating costs to membrane plants

Method used

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  • Reverse osmosis membrane module pollution in-situ monitoring device and monitoring method
  • Reverse osmosis membrane module pollution in-situ monitoring device and monitoring method
  • Reverse osmosis membrane module pollution in-situ monitoring device and monitoring method

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A reverse osmosis membrane component pollution in-situ monitoring device (see figure 1 and figure 2 ), comprising a reverse osmosis membrane shell 22 and a membrane shell cover 14, the reverse osmosis membrane shell is movably connected with the membrane shell cover; the inner surface of the right side wall of the reverse osmosis membrane shell is provided with a right fixed pipe 25; on the inner surface of the membrane shell cover A left fixed pipe 29 is provided; the two ends of the central pipe 19 are respectively connected with the right fixed pipe and the left fixed pipe; the near left end of the central pipe is provided with a baffle 17, and the baffle 17 divides the central pipe into the water delivery pipe 15 on the left and The water production pipe 20 on the right side, the water inlet pipe 13 runs through the membrane casing cover and connects with the water delivery pipe 15, and the water delivery pipe 15 is provided with a water inlet hole 16; the pure wat...

Embodiment 2

[0038] An in-situ monitoring method for reverse osmosis membrane module contamination, the monitoring system is shown in image 3 , including the following steps:

[0039] 1) The image processing system 12 is connected to the data acquisition and processing unit 11 through wires, the data acquisition and processing unit 11 is provided with 16 wires (also can be 8 or 12), and the 16 wires are connected to the reverse osmosis membrane module pollution source The first electrode array 28 of the position monitoring device (embodiment 1) is connected (also can be connected with the second electrode array 27 or the third electrode array 26);

[0040] 2) Acquisition of empty-field imaging images:

[0041] Through the water supply pump 2, the raw water in the raw water tank 1 (the composition of the raw water in this embodiment is as an example, but not limited to: 0.5g / L yeast, 0.5g / L kaolin, 100mM NaCl and 1mM CaCl 2 , the balance is deionized water) into the water inlet pipe 13 o...

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Abstract

The invention discloses a reverse osmosis membrane assembly pollution in-situ monitoring device and a monitoring method, the monitoring device comprises a reverse osmosis membrane shell and a membrane shell cover, and a central pipe is connected with a right fixed pipe and a left fixed pipe; a baffle is arranged at the near left end of the central pipe and divides the central pipe into a water supply pipe on the left side and a water production pipe on the right side, and a water inlet hole is formed in the water supply pipe; a purified water outlet pipe penetrates through the right side wall of the reverse osmosis membrane shell and is connected with a water producing pipe; a water outlet hole is formed in the water production pipe; a reverse osmosis membrane is arranged on the outer surface of the central pipe; the first electrode array, the second electrode array and the third electrode array are arranged on the substrate; each electrode penetrates through the reverse osmosis membrane shell, the electrode array is uniformly distributed in a square or round shape, and the distance d1 between the lower end of each electrode and the outer surface of the reverse osmosis membrane is 1-3mm. The method has the advantages of low detection cost, simple equipment, safety in operation, rapidness in data acquisition, in-situ real-time monitoring and the like. The defects and deficiencies of a common reverse osmosis membrane assembly monitoring means can be effectively avoided.

Description

technical field [0001] The invention relates to the field of in-situ monitoring of reverse osmosis membrane component pollution. In particular, it relates to an in-situ monitoring device and a monitoring method for contamination of reverse osmosis membrane modules. Background technique [0002] Reverse osmosis desalination technology is a more advanced, stable and effective desalination technology today. Compared with the traditional water treatment technology, this technology has the characteristics of high desalination rate, wide application range, strong reliability, and no secondary pollution. However, with the promotion of reverse osmosis desalination technology, the problem of reverse osmosis membrane fouling (hereinafter referred to as fouling) has existed for a long time and affects the normal operation of the reverse osmosis system, which greatly increases the operating cost of the reverse osmosis equipment. The fouling position of the reverse osmosis membrane sho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/00
Inventor 王捷贾辉孙敏秦卿雯
Owner TIANJIN POLYTECHNIC UNIV
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