Membrane module protection solution

A technology of protective liquid and protective agent, applied in membrane technology, semi-permeable membrane separation, chemical instruments and methods, etc., can solve problems such as environmental impact

Inactive Publication Date: 2013-07-24
TIANJIN POLYTECHNIC UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, conventional protective fluids are corrosi...

Method used

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Embodiment Construction

[0017] Taking the concentration of the protective solution as 30% as an example, the present invention is further described in detail: take 70ml of clear water, slowly add 30ml of glycerol into the clear water, stir continuously during the addition to make the solution evenly mixed; take NaHSO 3 : 5g-10g, slowly add to glycerol aqueous solution, stir to mix evenly; take sodium propionate: 0.5g-1g, add to the solution and stir evenly; take sodium tripolyphosphate: 0.5g-1g, add to the solution , mix well to form a uniform and stable solution, and store at room temperature. The protective solution of this concentration can protect the film material in the temperature range above -10°C, prevent it from freezing, and long-term soaking and storage can also play a role in antibacterial and sterilizing.

[0018] When the membrane module soaked in the protective solution is put into use again, first drain the protective solution, soak in clean water for 5-8 hours, and then backwash wit...

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Abstract

The invention relates to a membrane module protection solution formula and a preparation method thereof, belonging to the technical field of water treatment and environment. The membrane module protection solution formula comprises glycerol, NaHSO3, sodium propionate, and sodium tripolyphosphate (low temperature type). The protection solution is characterized in that the protection solution uses the glycerol which is harmless to human body and environment friendliness, the protection solution has stable physicochemical properties and no corrosion on the membrane material. The glycerol is used as the main material of the formula and prepared into different glycerol solutions according to different mass concentration proportions and the mass concentrations of the glycerol solutions mainly comprise 20%, 30%, 40%, 50%, and 60%. According to the different concentrations, the glycerol is mixed with water to prepare different glycerol solutions and the glycerol solutions are slowly stirred up. The NaHSO3, sodium propionate, and sodium tripolyphosphate are respectively prepared into NaHSO3 solution, sodium propionate solution, and sodium tripolyphosphate solution, and the NaHSO3 solution, the sodium propionate solution, and the sodium tripolyphosphate solution are slowly added into the protection solution, and the protection solution is stored at the room temperature. The membrane module protection solution has the advantages that the property of the protection solution is stable and the preparation process operation is simple. The raw materials are available and environment-friendly and do not cause secondary pollution.

Description

technical field [0001] The invention relates to a preparation method of a novel membrane module protection solution. Background technique [0002] Membrane water treatment technology is a newly developed water treatment and reuse technology in recent years. Its emergence and development are the inevitable results of the application and development of material science and environmental science. Membrane water treatment is an efficient and practical purification technology, which has the advantages of high effluent quality, small footprint, compact structure, and easy automatic control. Because membrane water treatment technology has many advantages that traditional water treatment processes cannot match, it is recognized as one of the most promising water treatment technologies in the future. [0003] With the rapid application and promotion of membrane technology, the investment cost of membrane materials and the operating energy consumption of the system have become the bo...

Claims

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Application Information

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IPC IPC(8): B01D65/00
Inventor 王捷程志杨贾辉张宏伟丁志威
Owner TIANJIN POLYTECHNIC UNIV
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