Whole-house quality-divided purification method

A purification device and quality separation technology, applied in the field of water purification, can solve problems such as cumbersome process and energy waste

Active Publication Date: 2013-07-17
ZHEJIANG CHANGXING CREFLUX MEMBRANE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects in the prior art of whole-house purification of tap water that energy is wasted due to lack of quality separation, or that the process is cumbersome and beneficial minerals are removed in

Method used

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  • Whole-house quality-divided purification method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1

[0030] The tap water inlet pressure of the households on the first floor of a user is 0.3MPa, the inlet water turbidity is 3NTU, and the residual chlorine content is 0.05ppm. figure 1 As shown, the tap water is processed by ultrafiltration, nanofiltration and ultraviolet sterilization in sequence. The ultrafiltration process uses hollow fiber membranes made of polyvinylidene fluoride with a molecular weight cut-off of 200,000 Daltons. The concentrated water after ultrafiltration is used for flushing mop or toilet or watering flowers. The turbidity of ultrafiltration water is less than 0.1NTU. The molecular weight cut-off of the nanofiltration module is 3000 Daltons, the operating pressure is 0.2 MPa, and the water output is 300L / h. The concentrated water after nanofiltration treatment can be used for vegetable washing and basin washing, and the nanofiltration product water can be used as direct drinking water or kitchen cooking water after ultraviolet steriliz...

Example Embodiment

[0033] Example 2

[0034] The tap water inlet pressure of households on the sixth floor of a community is 0.1MPa, the inlet water turbidity is 8 NTU, and the residual chlorine content is 0.3ppm. Such as image 3 As shown, tap water undergoes pressurization, microfiltration, ultrafiltration, dechlorination, nanofiltration and ultraviolet sterilization treatments in sequence. The boosting treatment adopts a booster pump, the head of the boosting pump is 20 meters, the microfiltration treatment adopts a microfiltration filter, and the filtration precision of the microfiltration filter is 50 μm. The ultrafiltration treatment uses hollow fiber membranes made of polypropylene with a molecular weight cut-off of 80,000 Daltons. The concentrated water after ultrafiltration treatment is used for flushing mop or toilet or watering flowers. The turbidity of ultrafiltration water is less than 0.1NTU. The residual chlorine removal treatment adopts an activated carbon filter, the activated ca...

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Abstract

The invention relates to the technical field of water purification, and in particular to a whole-house quality-divided purification method for tap water. The method comprises the following steps: conducting ultrafiltration treatment on tap water, and using ultrafiltration concentrated water as primary domestic water; conducting nanofiltration treatment on the tap water and using the nanofiltration concentrated water as secondary domestic water; and conducting UV sterilization treatment on nanofiltration water for domestic drinking. The invention also discloses a whole-house quality-divided purification device, comprising a membrane unit, a nanofiltration membrane unit and a UV sterilizer, which are connected successively; a water outlet of the UV sterilizer is connected with household drinking water port; and a concentrated water port of the ultrafiltration membrane unit and a concentrated water port of the nanofiltration membrane unit are respectively connected with a primary domestic water port and a secondary domestic water port. The whole-house quality-divided purification method and device for tap water provided by the invention employ a membrane integration technology and a full membrane process to produce water with three different qualities, so as to meet different use requirements of household or building users, improve taste of purified water and maintain nutrition content of some minerals.

Description

technical field [0001] The invention relates to the technical field of water quality purification, in particular to a method and device for whole-house separation and purification of tap water. 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. [0003] At present, some techn...

Claims

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Application Information

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IPC IPC(8): C02F9/08C02F1/32C02F1/44
Inventor 包进锋洪海云陈甘
Owner ZHEJIANG CHANGXING CREFLUX MEMBRANE TECH CO LTD
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