General Product
Ultra Filtration Systems
UF systems provide a robust polishing barrier before RO, reuse, and sensitive downstream equipment.
Membrane train
Stable permeate quality for RO feed, reuse polishing, and sensitive downstream equipment.
Project overview
Ultra filtration (UF) is a pressure-driven membrane process that removes suspended solids, colloids, bacteria, and high molecular-weight organics while allowing dissolved salts to pass.
In real projects, UF is used as a polishing stage ahead of RO, as tertiary treatment after biological plants, and as a reliability layer where feed turbidity fluctuates.
Unicare configures UF based on feed SDI, turbidity swings, backwash strategy, and required uptime — not just membrane area on paper.
Each system is engineered after source-water analysis, hydraulic checks, and utility integration constraints to avoid underperforming installations.
Our project approach includes design basis confirmation, instrumentation planning, and operator-focused handover documents.
Typical applications
- RO feed pre-treatment and membrane protection
- Tertiary polishing after STP/ETP for reuse
- Process water clarification in industrial lines
- Cooling tower and utility make-up water conditioning
- Commercial and institutional utility infrastructure
- Industrial process and service-water lines
How the system works
Step 01
Feed equalisation
Buffer feed variability and stabilise hydraulic load to the UF rack.
Step 02
Membrane filtration
Hollow-fiber membranes remove turbidity, colloids, and microbial load.
Step 03
Backwash & air scour
Periodic hydraulic/air cleaning restores flux and delays fouling.
Step 04
Permeate transfer
Polished water is routed to RO, storage, or process reuse headers.
Step 05
Engineering and approvals
Freeze P&ID logic, utility tie-ins, and deliverable schedule before fabrication.
Step 06
Commissioning and handover
Run performance checks, SOP training, and acceptance documentation for stable startup.
Technical snapshot
| Typical pore range | 0.01–0.1 micron |
|---|---|
| Operating mode | Dead-end / outside-in with periodic backwash |
| Feed turbidity handling | Project-specific, usually with pretreatment support |
| Control package | Auto valves + PLC/HMI optional |
| Documentation package | GA/P&ID, O&M manual, commissioning checklist, and preventive maintenance plan |
| Execution model | Design, supply, installation support, and post-commissioning service pathways |
Why teams choose this solution
Reliable polishing barrier for variable feed water
Lower SDI before RO improves membrane lifecycle
Automated backwash programs for stable operation
Skid-mounted layouts for faster installation
Design decisions tied to actual source-water and operating variability
Structured commissioning with measurable startup checkpoints
Operator-friendly SOPs for day-to-day consistency
Consistent UF permeate quality under variable inlet turbidity
Suitable polishing block before membrane-based desalination trains
FAQs
Is UF a replacement for RO?
No. UF removes suspended/colloidal load but not dissolved salts. UF and RO usually play complementary roles.
Why is UF used before RO?
It lowers particulate and colloidal fouling risk, helping maintain RO flux and reducing cleaning frequency.
What project inputs are required before final design?
Typical inputs include source-water report, flow demand profile, available footprint, utility constraints, and compliance/reuse target.
Do you support installation and post-commissioning service?
Yes. Unicare supports installation planning, startup supervision, operator training, and AMC-oriented service continuity.
How do you decide UF recovery and cleaning frequency?
Recovery and cleaning intervals are selected from pilot/design assumptions, feed variability, and operating risk tolerance.
Need this system designed for your site conditions?
Share your raw-water profile, flow target, and operating constraints. Our team will suggest the right treatment train with practical O&M expectations.