Pre-treatment & Utility
Ultrafiltration Equipment
Hollow-fibre UF systems for turbidity, colloid and bacteria removal, and as RO pre-treatment.
- Capacity
- 1 – 500 T/H
- Outlet Quality
- SDI ≤ 3, turbidity ≤ 0.1 NTU, bacteria removal ≥ 99.99 %
Ultrafiltration uses hollow-fibre membranes with a pore size around 0.01–0.1 μm to physically retain suspended solids, colloids, macromolecular organics, bacteria and viruses while allowing water, ions and small molecules to pass.
As RO pre-treatment, UF stabilises the feed SDI regardless of raw water fluctuation, dramatically extending RO membrane life. As a standalone process, it clarifies surface water, well water and process water to potable clarity without chemical coagulant sludge.
Systems run in dead-end or cross-flow mode with automatic backwash, air scrub and CEB (chemically enhanced backwash) sequences controlled by the PLC.
Key Features
Why This System Performs
Stable SDI for RO
Guarantees SDI below 3 even with variable surface water, protecting downstream RO membranes.
Absolute barrier
Physical retention of bacteria and viruses at ≥ 99.99 % without chlorine dosing.
Automatic backwash & CEB
Timed backwash, air scouring and chemically enhanced backwash keep flux high with minimal manual work.
Compact footprint
High packing density modules replace large clarifier and sand filter civil works.
Process
Typical Process Flow
- 01Raw water tank
- 02Self-cleaning / disc pre-filter 100 μm
- 03UF feed pump
- 04Hollow fibre UF modules
- 05UF product tank
- 06Backwash pump + air scour blower
- 07CEB dosing (NaClO / NaOH / HCl)
- 08To RO system or direct use
Specifications
Technical Data
| Capacity | 1 – 500 T/H |
|---|---|
| Membrane | PVDF hollow fibre, 0.01 – 0.1 μm |
| Operating flux | 40 – 80 L/(m²·h) |
| Recovery | 90 % – 97 % |
| Operating pressure | 0.1 – 0.3 MPa |
| Cleaning | Auto backwash, air scrub, CEB, CIP |
Applications
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