Operation mode of membrane module
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	Internal pressure type: under pressure, the feed enters into the inside of the hollow membrane for the inside-out process to be the permeate while the concentrate outflows from the other side of the hollow fiber membrane.
 
 
 
	  
	External pressure type: under pressure, the feed for the outside-in process is to be the permeate while the concentrate is collected from the outside of the hollow fiber membrane.
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