characteristic:
■ Ultrafiltration membrane technology can thoroughly remove pollutants such as bacteria, viruses, colloids, macromolecular organic matter, and algae.
■ It adopts an inner-lined PVDF membrane, which has high membrane fiber strength, good toughness, acid and alkali resistance, strong oxidation resistance, and long service life.
■ Strong anti-fouling ability; air-water combined cleaning facilitates the removal of contaminants from the membrane surface.
■Suitable for water purification of river water, spring water, reservoir water, sand filter backwash wastewater, as well as industrial wastewater treatment and sewage reuse.
Technical parameters of submerged ultrafiltration membrane modules
Membrane module model | NL@F-1000D | NL@F-1500D | NL@F-2000D | NL@F-Z35D | ||
Basic parameters | Membrane module height (mm) | 1025 | 1525 | 2025 | 2265 | |
Membrane module length (mm) | 620 | 620 | 620 | 2050 | ||
Effective membrane area ( m² ) | 12 | 18 | 25 | 35 | ||
Membrane fiber material | PVDF | |||||
Membrane fiber pore size (μm) | 0.03 | |||||
Membrane fiber inner/outer diameter (mm) | 1.0/2.2 | |||||
Water collection pipe materials | ABS | |||||
Sealing materials | Epoxy resin | |||||
Save method | Wet preservation / Dry preservation | |||||
Running parameters | Influent turbidity (NTU) | ≤100 | ||||
Suction pressure (MPa) | -0.02 to -0.08 | |||||
Design flux (L/( m² ·h)) | 10～70 | |||||
Operating mode | Suction filtration | |||||
Filtration cycle (h) | 4.0 | |||||
Backwashing method | Air-water backwash | |||||
Backwash time (min) | 2 | |||||
Backwash pressure (MPa) | 0.12 | |||||
Backwash flow rate ( m³ /h/membrane) | 0.5 | 0.7 | 1.0 | 1.4 | ||
Aeration pressure (MPa) | 0.05 | |||||
Air scrubbing intensity ( m³ /h/membrane) | 60 | |||||
Maintenance cleaning method | Physicochemical cleaning | |||||
Maintenance cleaning cycle (d) | 7～14 | |||||
Maintenance cleaning agent, concentration | NaClO (200-500 mg/L) | |||||
Chemical cleaning cycle (monthly) | 6～12 | |||||
Chemical cleaning methods | Physicochemical cleaning | |||||
Chemical cleaning agents, concentration | NaOH (0.02%) + NaClO (1000 mg/L) + Citric Acid (2%) | |||||
Note: (1) The above parameters are all reference values. The membrane module operation control parameters should be set reasonably according to the actual situation. (2) The “ m2 ” in the unit of air scrubbing intensity specifically refers to the projected area of the membrane stack. | ||||||
