Method for preventing whole-house separate purifying device film from being polluted

A purification device and membrane pollution technology, which is applied in the field of water purification, can solve the problems of poor antifouling effect and short membrane service life, and achieve the effects of prolonging service life, reducing operating costs and ensuring stable operation

Inactive Publication Date: 2013-05-08
ZHEJIANG CREATION ENVIRONMENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects of poor antifouling effect and short membrane service life in the existing method for preventing membrane pollution of the separation and purification device, the present inv

Method used

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  • Method for preventing whole-house separate purifying device film from being polluted
  • Method for preventing whole-house separate purifying device film from being polluted

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Example 1

[0022] A whole-house quality separation and purification device, such as figure 1 As shown, including the ultrafiltration membrane unit 3, the nanofiltration membrane unit 5, and the ultraviolet sterilizer 6 are connected in sequence, wherein the tap water outlet is connected with the water inlet 31 of the ultrafiltration membrane unit 3, and the water production port 32 of the ultrafiltration membrane unit 3 is connected to The water inlet 51 of the nanofiltration membrane unit 5 is connected, the water production inlet 52 of the nanofiltration membrane unit 5 is connected to the water inlet 61 of the ultraviolet sterilizer 6, and the water outlet 62 of the ultraviolet sterilizer 6 is connected to the household drinking water inlet 83. The concentrated water port 33 of the ultrafiltration membrane unit 3 and the concentrated water port 53 of the nanofiltration membrane unit 5 are respectively connected to the household primary water port 81 and the household se...

Example Embodiment

[0029] Example 2

[0030] A whole-house quality separation and purification device, such as figure 2 As shown, it includes a booster pump 1, a microfiltration filter 2, an ultrafiltration membrane unit 3, an activated carbon filter 4, a nanofiltration membrane unit 5, and an ultraviolet sterilizer 6 connected in sequence, wherein the booster pump 1 is connected to the tap water outlet Between the water inlet 21 of the microfiltration filter 2, the water outlet 22 of the microfiltration filter 2 is connected to the water inlet 31 of the ultrafiltration membrane unit 3, and the water production port 32 of the ultrafiltration membrane unit 3 is connected to the nanofiltration membrane unit 5. The activated carbon filter 4 is connected between the water inlet 51, the water production port 52 of the nanofiltration membrane unit 5 is connected to the water inlet 61 of the ultraviolet sterilizer 6, and the water outlet 62 of the ultraviolet sterilizer 6 is connected to the domestic dri...

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Abstract

The invention relates to the technical field of water purification, and in particular relates to a method for preventing a whole-house separate purifying device film from being polluted. The method comprises the following steps of: 1) carrying out ultrafiltration membrane backwashing on a hollow fiber ultrafiltration membrane of ultrafiltration equipment through tap water, and then carrying out positive ultrafiltration membrane washing; and 2) carrying out positive spiral-wound membrane washing on a spiral-wound membrane of nanofiltration or reverse osmosis equipment through water. According to the method for preventing the whole-house separate purifying device film from being polluted, the hollow fiber is subjected to ultrafiltration backwashing, positive ultrafiltration washing and positive spiral-wound membrane (nanofiltration or reverse osmosis) washing by the raw water of tap water when in downtime in light of the polluting conditions of the hollow fiber ultrafiltration membrane and the spiral-wound membrane (nanofiltration membrane or reverse osmosis membrane) of a core component of a whole-house separate water supplying device, the serious pollution of the hollow fiber ultrafiltration membrane and the spiral-wound membrane (nanofiltration membrane or reverse osmosis membrane) can be effectively avoided, the stability of the system in running can be ensured, the service life of the reverse osmosis membrane is prolonged, and the operation cost of the system is reduced.

Description

technical field [0001] The invention relates to the technical field of water quality purification, in particular to a method for preventing membrane pollution of a whole-house quality separation and purification device. Background technique [0002] The new version of "Drinking Water Hygienic Standards" (GB5749-2006) was implemented on July 1, 2012. Drinking water needs to meet 106 water quality monitoring standards. Do deep processing. However, tap water has to go through a long pipeline network before it can be delivered to direct users. At present, the biggest problem with the safety of drinking water quality for users is the secondary pollution problem during the transportation process. Due to the huge investment in pipeline network reconstruction, and the long construction period , so the renewal and transformation of the water supply pipe network cannot be fully completed in the short term. Therefore, the safety of domestic water will be a very urgent problem. ...

Claims

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Application Information

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IPC IPC(8): B01D65/02C02F1/44
Inventor 包进锋洪海云陈甘
Owner ZHEJIANG CREATION ENVIRONMENT TECH
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