Strengthened RO Membrane Elements

Strengthened RO Membrane Elements - Helixfi l Series

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VONTRON TECHNOLOGY CO., LTD.

Beijing, China

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ULP400-LD and LP400-LD membrane elements adopt LD 34mil feed channel spacer to improve the liquid turbulence on the surface of membrane, thus reducing the risk of colloid congestion and the frequency of cleaning. ULP440-MAX and LP440-MAX membrane elements can increase permeate fl ow by 15% and 20% respectively, while maintaining the required rejection rate. PURO-I membrane elements are more fouling-resistant and more resilient to a wide range of chemical cleaning thanks to its improved cross-link strength of Polyamide desalination layer.

PURO-Ⅱ membrane elements have higher endurance to chemical cleaning and obviously higher fouling resistance owing to the brand-new design of feed channel spacer with low pressure differentials. PURO-FRLE, an ultra-low pressure RO Membrane, has the features of fouling resistance and low energy consumption, and is applicable to the treatment of industrial sewage with low salinity, such as electronic sewage and surface water.

Conditions of Testing

Operating pressure at 225 psi (1.55 MPa) 2000 mg/L NaCl solution Temperature at 25℃ pH 7.0 ± 0.5 Recovery rate at 15%.
Operating pressure at 150 psi (1.03 MPa) 1500 mg/L NaCl solution Temperature at 25℃ pH 7.0 ± 0.5 Recovery rate at 15%.
Operating pressure at 150 psi (1.03 MPa) 2000 mg/L NaCl solution Temperature at 25℃ pH 7.0 ± 0.5 Recovery rate at 15%.

                                                            Maximum operating pressure
                                                            600 psi (4.14 MPa);
                                                        
                                                            Maximum feedwater temperature
                                                            45℃
                                                        
                                                            Maximum feedwater fl ow SDI15
                                                            5
                                                        
                                                            Maximum concentration of free chlorine
                                                            <0.1 mg/L
                                                        
                                                            Maximum pressure drop per element
                                                            15 psi (0.1MPa)
                                                        
                                                            Allowed pH range for chemical cleaning
                                                            1-13
                                                        
                                                            Allowed pH range for feedwater in operation
                                                            2-11
                                                        
                                                            Allowed pH range for chemical cleaning
                                                            2-12
                                                        
                                                            Allowed pH range for feedwater in operation
                                                            3-10