Specialty Membranes
Engineered for the streams standard membranes cannot handle
Acid and caustic service, high-pressure disc-tube and spacer-tube concentration, mineral and resource recovery, ceramic filtration — purpose-built platforms for challenging wastewater and ZLD duty.
- 16
- Specialty platforms
- 11
- Technology families
- 0–14
- pH service envelope
- ZLD
- Concentration ready
Why specialty
Four problems that break conventional membranes
Every platform below exists because a real plant stream defeated a standard element. Select by the problem, not by the datasheet.
Extreme chemistry
Free acid, spent caustic, oxidisers and solvents outside conventional polyamide limits.
High solids & foulants
Open-channel and tubular geometries that keep running where spiral elements plug.
Resource & mineral recovery
Selective platforms that return acid, alkali, salts and process values to the plant.
Near-ZLD concentration
High-pressure and thermally driven stages that push brine toward crystallisation.
Portfolio
Specialty platforms by technology family
Full specifications, operating limits and application notes on every product page.
Showing 16 of 16 series
SP-HC Series — High-Efficiency Concentration & Separation
Up to 290,000 mg/L concentrate with 98.5% salt separation purity
Sub-high-pressure alternative to ultra-high-pressure systems for ultra-high salinity concentration, salt separation and resource recovery.
Specifications →
SP-AR Series — Acid Resistance Membranes
Composite spiral elements, 200–300 Da MWCO, pH 0–12
Acid-resistant specialty membranes for acid recovery, metal cation removal, decolorization and electrolyte recovery in mining, metallurgy and chemical processing.
Specifications →SP-CR Series — Caustic Resistance Membranes
MWCO 200 & 1000 Da for caustic recovery at pH up to 14
Caustic-resistant specialty membranes for NaOH recovery, spent caustic reuse, color and organic removal and alkaline stream concentration.
Specifications →
SP-ST (Spacer-Tube) Series
Hypersaline concentration up to 70,000 ppm TDS
Optimized spiral-wound architecture for hypersaline wastewater concentration, ZLD pre-concentration and resource recovery.
Specifications →
SP-DT (Disc-Tube) Series
Disc-tube modules for landfill leachate and extreme wastewater
Flagship disc-tube technology for TDS concentration up to 70,000 ppm, landfill leachate treatment and industrial resource recovery.
Specifications →
SP-CM Series — Ceramic Specialty Membranes
Multi-channel MF, UF and NF ceramic elements, 2.5 µm to 8 kDa
Alumina, zirconia, titania and silicon carbide ceramic elements for high-temperature, high-solids and chemically aggressive streams.
Specifications →
SP-MD Series — Membrane Distillation Modules
PTFE hydrophobic hollow fibre MD for thermal brine concentration
PTFE hollow fibre membrane distillation modules driven by vapour pressure difference — concentrating brine, acids and salt solutions using low-grade waste heat toward near zero liquid discharge.
Specifications →
SP-DDA Series — Acid Recovery Diffusion Dialysis Membranes
Anion exchange membranes for acid–salt and acid–organic separation
High-selectivity anion exchange membranes that recover free acid from spent process liquors under a pure concentration gradient — no pressure, no additives.
Specifications →SP-DDC Series — Alkali Recovery Diffusion Dialysis Membranes
Cation exchange membranes for caustic recovery from spent alkaline liquors
Selective cation exchange membranes that recover NaOH, KOH and LiOH from spent alkaline streams by concentration-driven diffusion dialysis.
Specifications →
SP-AN Series — Ammonia Nitrogen Removal Membranes
Membrane contactors combining stripping and acid absorption in one module
Modified PP hollow fibre membrane contactors that strip NH₃-N and absorb it into acid inside a single module — inlet up to 20,000 ppm, effluent below 1 ppm.
Specifications →
SP-AZ Series — Azeotropic Separation Membranes
Ceramic-supported membranes that break azeotropes and cut distillation energy
Membranes that separate azeotropic organic mixtures, coupling with distillation or reactive distillation columns to slash energy use and raise conversion.
Specifications →
SP-BG Series — Biogas Upgrading Membranes
Methane purification and CO₂ removal for renewable gas
Polymer gas separation membranes that upgrade biogas to grid- or vehicle-quality methane, with ≥98% hydrocarbon recovery and outlet CO₂ ≤2%.
Specifications →
SP-TB Series — Organic Tubular Membranes
PTFE, PVDF and PES tubular membranes, 10 kDa to 0.2 µm
Sintered and non-woven tubular membranes with open-channel geometry for high-solids, high-viscosity and chemically aggressive streams.
Specifications →SP-PV Series — Pervaporation Membranes
Zeolite hollow fibre molecular sieve membranes for solvent dehydration
In-situ grown zeolite layer on ceramic hollow fibres — ≥50% energy saving, ≥99% single-pass recovery and 2–3× the flux of tubular molecular sieve membranes.
Specifications →
SP-GS Series — Spiral-Wound Gas Separation Membranes
Organic-selective spiral elements with conductive spacers and metal housings
Compact, high packing density spiral-wound elements that separate organic vapours from air, nitrogen, oxygen and CO₂ for concentration and recovery.
Specifications →SP-VOC Series — VOCs Recovery Membranes
Rubbery polymer membranes separating organic vapours from light gases
Skid-mounted VOC recovery membrane systems with >90% typical recovery and 3–12 month payback for chemical, petrochemical and gas processing plants.
Specifications →Custom engineering
Need a specialty platform tuned to your stream?
Share your feed chemistry, recovery target and foulant profile. Our engineers select or configure the right specialty membrane, then model flux, pressure and cleaning intervals before you commit.
Looking for standard RO, NF, UF or MBR?
Our core portfolio covers seawater and brackish RO, nanofiltration, ultrafiltration and submerged MBR platforms.
View core products