Method for preparing water quality profile, method for inspecting separation membrane module, and water treatment apparatus
A production method and separation membrane technology, which are used in water/sludge/sewage treatment, permeation/dialysis water/sewage treatment, water treatment parameter control, etc., can solve the problem of the high cost of water treatment devices and the inability to detect separation membranes with high precision Abnormal modules, insufficient number of sensors, etc., to achieve the effect of high maintenance work efficiency
Active Publication Date: 2021-05-04
TORAY IND INC
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Problems solved by technology
[0007] However, in the conventional method of installing sensors and the like in the separation membrane element, if the number of installed sensors and the like is insufficient, the abnormality of the separation membrane module cannot be detected with high accuracy.
On the other hand, when the accuracy of abnormality detection is sufficiently improved by adding sensors, etc., the cost increase of the entire water treatment device is regarded as a problem.
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[0016] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings, but the present invention is not limited by them at all.
[0017] The inspection method of the separation membrane module according to one embodiment of the present invention is characterized in that it includes (1) step 1, (2) step 2, and (3) step 3. In the aforementioned (1) step 1, the The separation membrane module of the mouth and a plurality of permeated water outlets supplies the water to be treated to obtain permeated water. In the aforementioned (2) step 2, the ratio of the flow rates of each permeated water flowing out from the above-mentioned multiple permeated water outlets Change, in the aforementioned (3) step 3, after the aforementioned (2) step 2, measure the water quality of the above-mentioned each permeated water.
[0018] The water treatment device for implementing the inspection method of the separation membrane module according to one embod...
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The present invention provides a method for preparing a water quality profile that has (1) a step 1 for supplying water to be treated to a separation membrane module with a supply port for the water being treated and multiple permeate outlets and obtaining permeate, (2) a step 2 for varying the ratio of the flow rates of the respective permeates flowing out of the multiple permeate outlets, (3) a step 3 after step 2 for measuring the respective water qualities of the permeates, and (4) a step 4 for plotting the relationship between the ratio of the respective permeate flow rates varied in step 2 and the respective water qualities of the permeates measured in step 3 as a scatter diagram, steps 2-4 being repeated multiple times.
Description
technical field [0001] The invention relates to a method for making a water quality profile, a method for checking a separation membrane module and a water treatment device. Background technique [0002] In recent years, fluid separation technologies using various separation membranes such as reverse osmosis membranes, nanofiltration membranes, ultrafiltration membranes, and microfiltration membranes have been developed. For example, a water treatment process using a separation membrane module in which separation membrane elements including these separation membranes are housed in a pressure vessel is known. [0003] In such a water treatment process, processes such as chemical washing are usually repeated in addition to normal operation. Therefore, the occurrence of abnormalities such as damage, rupture, or deterioration of the separation membrane element cannot be avoided. On the other hand, it is extremely important to quickly detect the occurrence of an abnormality in ...
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IPC IPC(8): B01D65/10C02F1/44
CPCC02F1/44B01D65/104B01D2311/16B01D2311/24C02F2209/40C02F2209/05C02F2209/11C02F1/008
Inventor 滨田浩志谷口雅英富冈一宪
Owner TORAY IND INC