Seawater desalination reverse osmosis membrane SW-4040

The SW (SeaWater) series membrane elements are suitable for treating seawater as well as high-concentration brackish water. Their high desalination rate ensures that potable drinking water can be obtained from seawater through a single-stage reverse osmosis process. These elements can be used in a variety of industrial water treatment applications, including seawater desalination, desalination of high-concentration brackish water, and feedwater supply for power plant boilers. They are also applicable to diverse fields such as wastewater reuse and the concentration and recovery of high-value substances like food and pharmaceutical products.

◎ Product Introduction and Application Fields

　　The SW (SeaWater) series membrane elements are suitable for treating seawater as well as high-concentration brackish water. Their high desalination rate ensures that potable drinking water can be obtained from seawater through a single-stage reverse osmosis process. These elements can be used in a variety of industrial water treatment applications, including seawater desalination, desalination of high-concentration brackish water, and boiler feedwater supply for power plants. They are also applicable to diverse fields such as wastewater reuse and the concentration and recovery of high-value substances like food and pharmaceutical products.

 

◎ Model Specifications and Parameters

Product Model	Effective membrane area ft² (㎡)	Application test pressure psi (MPa)	Water production GPD (m³/d)	Stable Desalination Rate / %	Stable boron removal rate/%
HT-SW-4040FR	85 (7.9)	800 (5.5)	1700 (6.4)	99.8	93.0

 

　　a. The water production rate and desalination rate are based on the following test conditions: 32,000 ppm NaCl, 5 ppm boron, water temperature of 25℃, pH 7.5, a single-element recovery rate of 8%, and the rated operating pressure specified above.

　　b. The water production of a single component may vary within a range of ±20%.

 

◎ Operating Limits

 

Operating limit	Membrane element type	Polyamide composite membrane
	Maximum operating temperature	45℃
	Maximum working pressure	1200 psi (8.3 MPa)
	Maximum Inflow Rate	16 GPM (3.6 m³/h)
	Minimum brine flow rate	4 GPM (0.9 m³/h)
	Continuous operating pH range	3-10
	pH range for chemical cleaning	2-12
	Maximum Silt Density Index (SDI) for Inlet Water 15	5
	Maximum Inlet Turbidity/NTU	1
	Maximum residual chlorine concentration in influent / (mg/L)	0.1
	Maximum pressure drop for a single component	15 (0.1) psi (MPa)