Engineered system · Water & Wastewater Treatment
Ultrafiltration (UF) Systems
A physical barrier with a practical operating plan.
Ultrafiltration needs more than membrane selection. Feed conditions, cleaning and operating discipline shape its usefulness.
Project vision
A UF membrane separates by size. Water and small dissolved molecules pass through its pores as permeate, while suspended solids, colloidal particles, bacteria, large organic molecules and, depending on the membrane, many viruses stay behind as concentrate. UF does not remove dissolved salts, so it runs at a low pressure. It needs no coagulants or disinfectants to do its job and fits into a compact skid.
UF polishes biologically treated sewage and effluent so the water can be reused on site, and gives clear, low-turbidity process water with a steady quality whatever the swings in the feed. The membranes need periodic cleaning, and we set up the cleaning system and schedule as part of design, installation and maintenance.
Illustrative application narrative · no completed installation or measured result is asserted.
Typical business & operational challenges
A typical operational situation
Suspended solids, fouling tendency and variable inlet conditions influence membrane operation.
Our solution
Ultrafiltration (UF) Systems is considered around the actual duty, available inputs and operating arrangement. The scope starts with feed compatibility review. It also considers membrane selection. It also considers backwash planning. It also considers integrity and operating checks.
Our approach
Review sample quality and required separation
Assess membrane and feed compatibility
Define backwash and cleaning arrangements
Check operating pressure and treated-water performance
Features & deliverables
- Feed compatibility review
- Membrane selection
- Backwash planning
- Integrity and operating checks
Selection and inclusion are confirmed through the approved proposal and design.
Expected operational benefits
A clearer basis for feed compatibility review and integrity and operating checks, supported by an operating approach suited to the application. Actual performance depends on the final design, conditions and operation.
Technology options & engineering basis
Define backwash and cleaning arrangements. Equipment, interfaces and operating requirements are selected after the input review.
Information to bring to the discussion
Source or process analysis, flow and load variation, target quality, space, utilities and operating constraints.
How it works, stage by stage
Strainer
A screen or disc filter removes larger particles that could damage the fine membrane fibres.
Feed pump
A pump provides the modest pressure difference that drives water through the membrane.
UF membrane
Water passes through the pores. Colloids, bacteria and suspended solids are held back.
Permeate tank
Filtered water is stored for use or reuse.
Backwash
Short reverse flushes, at intervals set for the chosen module, lift solids off the membrane surface.
Chemical clean
Alkaline detergent or citric acid is circulated periodically to remove organic or mineral fouling.
Options
UF for reuse
Polishes biologically treated sewage or effluent so the water can be reused on site.
UF for process water
Gives clear, low-turbidity water from surface or borewell sources where dissolved salts are acceptable.
Packaged UF skid
Membranes, pumps and the cleaning system on one compact skid, for smaller flows and tight sites.
Where it is used
- Process water
- Sewage reuse
- Effluent recycling
- Pharmaceuticals
- Food & beverage
- Pulp & paper
- Steel & power
Visual story
The needA physical barrier with a practical operating plan. Suspended solids, fouling tendency and variable inlet conditions influence membrane operation.
Read the full voiceover script
- The need A physical barrier with a practical operating plan. Suspended solids, fouling tendency and variable inlet conditions influence membrane operation.
- The response Ultrafiltration (UF) Systems begins with the application. Review sample quality and required separation. Assess membrane and feed compatibility.
- The work Define backwash and cleaning arrangements. Then check operating pressure and treated-water performance. The details belong to the agreed configuration and scope.
- The next step Start with feed compatibility review, and define what success needs to look like. Discuss your application with ZEAL.
Questions before the next step
Does UF remove every dissolved contaminant?
No. UF is a physical separation process; suitability for a contaminant must be assessed against membrane characteristics and feed conditions.
What is needed for an enquiry?
Feed compatibility review, application details, available records, site constraints and the required delivery scope.
What does UF not remove?
Dissolved salts. UF removes particles, colloids, bacteria and, depending on the membrane, many viruses by size, but dissolved salts pass through with the water. A water analysis shows whether that suits your use.
How is a UF membrane cleaned?
Routine backwashes keep it clear day to day. For organic fouling a low-foam alkaline detergent is circulated, and for mineral fouling citric acid, at the strengths and times the membrane maker sets for the chosen module.
Does UF need chemicals to work?
Not for filtration itself. It works by size alone. Chemicals are used only for periodic membrane cleaning.
Bring us your application.
Share your requirement and the information you already have. ZEAL can help clarify the options and the information needed for the next step.