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Technical Service

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Product quality assurance

Guildline For Membrane Elements Selection

Service process

Guildline For Membrane Elements Selection

1. Selection According to Total Dissolved Solids (TDS) of Feedwater

(（Feed Water TDS：mg/L)

2. Selection According to Design Index Requirements of Membrane System

Indicators	Requirements	Recommended Model
System desalination rate	20-70%	NF1/NF2
	≥95%	XLP
	≥98%	ULP/BW/FR
	≥99%	SW
Influent pressure	≤4.1MPa(600psi)	XLP/ULP/BW/FR
Influent pressure	≤8.3MPa(1200psi)	SW
Product water flow rate	<4.0m³/h	4-inch membrane element
Product water flow rate	≥4.0m³/h	8-inch membrane element