Backwashing water purification system

A water purification system and backwashing technology, which is applied in water/sewage treatment, water/sludge/sewage treatment, osmosis/dialysis water/sewage treatment, etc. It can solve problems such as time-consuming, affecting the use effect, and difficult to clean. , to achieve the effect of improving fluidity and reducing internal leakage

Pending Publication Date: 2017-06-30
宁波清水坊环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The recent application of ultrafiltration membrane technology in the field of water treatment has gradually attracted people's attention. Raw water is transformed into purified water containing minerals through ultrafiltration devices, but at the same time a large amount of sediment and impurities will accumulate on the surface of ultrafiltration membranes. Traditional cleaning methods It is to open the sewage valve and wash the surface of the ultrafiltration membrane with water. However, due to the adhesion of sediment and colloid on the surface of the membrane, it is difficult to wash it completely, which will affect the use effect; or directly take the ultrafiltration membrane out of the filter element for scrubbing. However, this method is more time-consuming

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] see figure 1 , a backwashing water purification system, comprising an ultrafiltration membrane assembly and a backwashing device connected with the ultrafiltration module assembly. The ultrafiltration membrane assembly includes a housing 10, which is provided with a water inlet, a sewage outlet 13 and a clean water outlet 15, wherein the water inlet and the sewage outlet 13 are respectively located at both ends of the housing 10, and the clean water outlet 15 is opened on the on the side wall of the housing 10.

[0042] Several hollow fiber membranes 20 are also arranged in the casing 10, and one end of several hollow fiber membranes 20 is fixed on the head 40, and the head 40 is fixed in the casing 10, and the casing 10 is divided into two chambers by the head 40 chambers, wherein several hollow fiber membranes 20 are located in one of the chambers, which is a high-pressure chamber 11 , and the opposite chamber is a low-pressure chamber 12 .

[0043] The hollow fiber...

Embodiment 2

[0055] see Figure 5 The difference between a backwashing water purification system and Embodiment 1 is that the backwashing device uses a water storage bucket 52 in conjunction with a water pump 53 to replace the pressure bucket 50 . The return pipeline 51 is also connected to the water purification pipeline 60, and the water pump 53 is connected to the water storage bucket 52. The water storage bucket 52 has a water purification opening 521, and the water purification opening 521 passes through the first water purification branch 55 and the water purification pipeline 60. connected, and a float switch 56 is provided at the clean water opening 521, and a second valve 54 is provided on the return line 51.

[0056] When the system is producing water, the first valve 61 and the water inlet valve 16 are opened, and the drain valve 17 and the second valve 54 are closed. After the same raw water is ultra-filtered, the purified water enters the purified water pipeline 60 from the pu...

Embodiment 3

[0059] see Figure 7 , a backwashing water purification system differs from Embodiment 2 in that the number of water storage tanks 52 is increased. In this embodiment, two water storage tanks 52 connected in series are used, and a connecting pipe 57 is used between the two water storage tanks 52. interconnected. Furthermore, the capacity of flushing water during backwashing is increased, and the water storage capacity is also improved. Of course, the number of series connection of water storage buckets 52 can be selected according to actual conditions.

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Abstract

The invention discloses a backwashing water purification system, which includes an ultrafilter membrane assembly and a backwashing apparatus connected to the ultrafilter membrane assembly. The ultrafilter membrane assembly includes a housing and a plurality of hollow fiber membranes fixed inside the housing through a dish head. The dish head divides the inside of the housing into an upper part which is a low-pressure chamber and a lower part which is a high-pressure chamber. The hollow fiber membranes are put in the high-pressure chamber and have openings that communicate with the low-pressure chamber. The housing further includes a water inlet, a drain outlet and a purified water outlet, wherein the water inlet and the purified water outlet communicate with the low-pressure chamber and the drain outlet communicates with the high-pressure chamber. The purified water outlet is connected to a purified water pipe, and the backwashing apparatus is connected to the purified water pipe. The backwashing apparatus is used to allow water to enter the cavities of the hollow fiber membranes, so that the hollow fiber membranes are made to expand immediately, impurities stacked on the surfaces are loosened, and through combination with high-speed washing of raw water that enters the high-pressure chamber from a water inlet module, impurities on the surfaces of the hollow fiber membranes are effectively cleaned.

Description

technical field [0001] The invention relates to a water purification treatment system, in particular to a backwashing water purification system. Background technique [0002] Recently, the application of ultrafiltration membrane technology in the field of water treatment has gradually attracted people's attention. The raw water is transformed into purified water containing minerals through the ultrafiltration device, but at the same time, a large amount of sediment and impurities will accumulate on the surface of the ultrafiltration membrane. The traditional cleaning method It is to open the sewage valve and flush the surface of the ultrafiltration membrane with water flow, but because the sediment and colloid adhere to the surface of the membrane, it is difficult to wash it all off, thus affecting the use effect; or directly take the ultrafiltration membrane out of the filter element for scrubbing, But this method is more time-consuming. SUMMARY OF THE INVENTION [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D61/18B01D65/02C02F1/44
CPCB01D61/145B01D61/18B01D65/02C02F1/444
Inventor 杜嘉愚
Owner 宁波清水坊环保科技有限公司
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