Experiment system and method for tangential filtration of high pressure resistant flat reverse osmosis (RO) membrane

An experimental system and flat-plate technology, applied in the field of flat-plate RO membrane filtration experimental devices, can solve the problems of insufficient pressure bearing capacity, inability to change the flat-plate filter, affecting the accuracy of the experiment, etc., and achieve the effect of reducing the cost.

Active Publication Date: 2013-11-27
YANCHENG SILU INFORMATION TECH SERVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First of all, the dead-end filtration technology has been eliminated by the application of engineering examples, and now tangential filtration is generally used to slow down the concentration polarization. If the dead-end filtration is used for scientific research, it does not conform to the actual situation; secondly, the existing flat-plate type Ultrafiltration and microfiltration filters are generally made of plastic, which can only be tested under low pressure (maximum 0.5Mpa), while reverse osmosis membrane filtration requires at least 1-2Mpa pressure conditions, such products are obviously under pressure lack of ability
[0004] In addition, the existing flat filter cannot freely change and adjust the filtration speed according to the pressure intensity, which brings a lot of inconvenience to the experiment and also affects the accuracy of the experiment

Method used

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  • Experiment system and method for tangential filtration of high pressure resistant flat reverse osmosis (RO) membrane
  • Experiment system and method for tangential filtration of high pressure resistant flat reverse osmosis (RO) membrane
  • Experiment system and method for tangential filtration of high pressure resistant flat reverse osmosis (RO) membrane

Examples

Experimental program
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Embodiment

[0042] Example: see Figure 1 to Figure 8 , an experimental system for high-pressure flat RO membrane tangential filtration, including:

[0043] Feed tank 1 is used to hold feed liquid;

[0044] The pressure pump 2 is located between the feed tank and the flat RO membrane filter device, and its two ends are connected with the feed tank and the flat RO membrane filter device through pipelines to transport the feed liquid in the feed tank to the flat RO membrane filter. Membrane filtration device, while providing the high pressure required for filtration experiments;

[0045] Flat-plate RO membrane filtration device 3 is used to separate the substances in the feed liquid and divide the filtered liquid; the permeate (that is, the liquid that passes through the RO membrane) is transported to the storage tank through pipelines for storage, and the concentrated liquid (that is, The liquid that has not penetrated the RO membrane) is returned to the feed tank through the return pipe...

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Abstract

The invention discloses an experiment system and an experiment method for tangential filtration of a high pressure resistant flat reverse osmosis (RO) membrane. The experiment system comprises a material feeding pot, a pressure pump, a flat RO membrane filtration device, a storage pot, a pressure gauge, an adjustment valve and a safety valve. The experiment method comprises the following steps of: (1) arranging an RO membrane between a top plate and a base plate, and fastening the top plate and the base plate together through bolts; (2) connecting equipment; (3) keeping the safety valve closed and the adjustment valve opened, and starting the high-pressure pump; (4) gradually turning down the opening degree of the adjustment valve, so that the liquid feeding pressure of the flat RO membrane filtration device is raised until material liquid flowing through the membrane flows out; and (5) finishing collecting the filtered material liquid, stopping the pump, and opening the adjustment valve and the safety valve to release pressure. The experiment system is feasible in a laboratory and can bear high pressure required by tangential filtration of the flat RO membrane so as to finish an RO filtration experiment; and according to the experiment method, the pollution situation of the membrane in each filtration stage can be observed conveniently, and researches on a pollution control technology is facilitated.

Description

technical field [0001] The present invention relates to a flat plate RO membrane filtration experimental device, in particular to an experimental system for high pressure resistant flat RO membrane tangential filtration, which is a feasible flat plate reverse osmosis (RO) membrane filtration system in the laboratory, and a Experimental method for performing reverse osmosis tangential filter media at high pressure. Background technique [0002] At present, most of the known RO membrane filtration devices use roll-type membrane modules. The roll-shaped RO membrane is selected and inserted into a cylindrical high-pressure resistant filter housing to form a roll-type membrane module. Because the coiled membrane module is sealed in the filter housing, it can only complete the separation and filtration of the medium, which is not conducive to studying and observing the membrane surface at any time to control the occurrence of membrane fouling. The membrane can only be taken out f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D61/00B01D61/08
Inventor 曾晓岚韩乐丁文川张勤李仲刘建栋刘姣
Owner YANCHENG SILU INFORMATION TECH SERVICE CO LTD
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