Ultrafiltration (UF) Systems
Packaged UF skids for RO pretreatment, water clarification and reuse polishing, engineered to your feed water and required m3/day.
Product Description
When turbidity, colloids or bacteria make conventional filtration unstable before RO, DSTC designs UF systems to deliver a more consistent low-SDI feed. Each UF system is sized from the feed water analysis and required capacity, then built with hollow-fiber UF modules, cartridge pre-screening, automatic backwash, CEB, SEKO chemical dosing, instruments and a control panel. DSTC also supports the system after supply with UF modules, dosing chemicals, cartridge filters, spares, commissioning and service.
For quotation, send the feed water analysis, required capacity in m3/day, feed water source (surface, well or wastewater), turbidity and SDI if available, whether the UF feeds an RO plant or is used for direct clarification or reuse, and delivery city.
Overview
Ultrafiltration is a membrane clarification process that removes smaller particles than conventional media filtration can reliably control. In RO pretreatment, its main value is delivering a stable SDI to the RO feed, especially when raw water quality changes during the day or season. UF is also useful for surface water, well water with turbidity or colloids, and treated wastewater polishing. DSTC engineers UF skids around the feed water quality, organic load, turbidity, cleaning strategy and required m3/day rather than selling one fixed model.
Applications
- •RO pretreatment to hold feed SDI below 3 and protect membranes
- •Surface water clarification for rivers, lakes, and canal or dam water
- •Well water clarification where turbidity, iron, or colloids are a problem
- •Wastewater reuse polishing ahead of RO or before discharge or irrigation
- •Removal of bacteria, suspended solids, and colloids for process water
- •Upgrading older media-filter pretreatment on existing RO plants
Product Range & Specs
- ✓Process: hollow-fiber UF membranes at about 0.01 to 0.1 micron remove suspended solids, colloids, bacteria and larger organics for a low, stable SDI, typically below 3
- ✓Components: hollow-fiber UF modules, cartridge pre-screening, SEKO coagulant and CEB dosing, instruments and a control panel, all skid-mounted
- ✓Cleaning and recovery: automatic backwash plus chemically enhanced backwash (CEB) to keep flux stable and extend membrane life
- ✓Control and automation: PLC-based control panel runs filtration, backwash and CEB cycles automatically with the required instruments
- ✓Capacity: sized in m3/day to the feed water and duty, from small skids to larger multi-train systems, not a single fixed size
- ✓DSTC support: system sizing, fabrication in Saudi Arabia, commissioning, and ongoing supply of modules, SEKO dosing, chemicals and spares
Product Summary
UF uses hollow-fiber membranes, usually around 0.01 to 0.1 micron, to remove suspended solids, colloids, bacteria and larger organics. It is commonly used before RO to achieve a low, stable SDI, often below 3.
Frequently Asked Questions
Why use UF instead of media filters before RO?+
UF gives a lower and more stable SDI, usually below 3, even when feed turbidity changes. This protects RO membranes better than sand or multimedia filters and helps reduce fouling, cleaning frequency and membrane replacement.
What SDI can a DSTC UF system deliver as RO pretreatment?+
A properly designed UF system on suitable feed water typically holds SDI below 3, which is the range most RO membrane makers prefer. DSTC confirms the target from your water analysis.
Can UF handle surface water, well water and wastewater?+
Yes. DSTC builds UF systems for surface water and well water clarification, and for wastewater reuse polishing. The dosing, cartridge pre-screening, backwash and CEB settings are matched to each feed.
What is CEB and how often does the system backwash?+
CEB means chemically enhanced backwash. A cleaning chemical is added during backwash to remove organic or biological fouling that plain backwash may leave behind. Normal backwash runs frequently; CEB runs less often.
How is a UF system priced in Saudi Arabia?+
Price depends on required capacity in m3/day, feed water quality, number of trains, membrane quantity, instrumentation, automation level and chemical-cleaning strategy. DSTC needs your feed water analysis and required m3/day to quote accurately.