Biofouling is the Achilles' heel of RO
The npj Clean Water review highlights biological growth as one of the main costs and operational limits of reverse osmosis.
Membranes · microbiological safety · SDC / CDS / ClO₂
SDC and reverse osmosis: protection before and after the membrane
Osmosis removes salts; SDC helps face the biological challenge that continues to exist in the system's lines, filters, and tanks.
Specialized engineering
Laboratory and field evidence guides projects defined by membrane, generation purity, and application point.
A moleculemultiple engineering disciplines
The reverse osmosis membrane is extraordinary for separating salts and dissolved contaminants, but it does not create a disinfectant residual. At the same time, biological growth increases pressure, energy consumption, cleaning frequency, and loss of availability.
ClO₂ has been studied both in pretreatment and in protecting filters and circuits. After the membrane, it can function as a microbiological layer for the tank and distribution—a use different from direct contact with the membrane.
Control in filters and pre-treatment
A desalination study observed a reduction in biofouling potential in cartridge filters with lower ClO₂ concentration than chlorine under the tested conditions.
Application point changes everything
ClO₂ before the membrane, circuit cleaning, and post-RO residual are distinct strategies; each requires its own compatibility and control.
02 · results and references
A new layer of protection for osmosis
01
Reviews and field studies indicate the potential of chlorine dioxide to reduce biofouling in membrane systems.
02
In polyamide membranes, application point, purity, pH, and exposure time define the integration strategy.
03
With engineering and monitoring, ClO₂ opens a promising front to control the biological challenge before and after the membrane.
03 · application
How to bring technology to operations
Map the problem
Identify if the source is in the raw water, pre-filters, membrane, permeate tank, or distribution.
Confirm compatibility
Cross-check membrane material, manufacturer limits, ClO₂ generation quality, and absence of unwanted oxidants.
Separate the barriers
Pretreatment protects the membrane; post-treatment protects storage and network. Mature projects do not confuse these functions.
04 · supply
We transformed ClO₂ technology into a ready-to-operate solution.
Tell us your request. We connect application, flow, automation, and supply method in a focused project.
Generation→Dosage→Control
ClO₂ produced for the actual demand of the operationChlorine dioxide generators
We integrate generation, dosing, and application point into the plant architecture to protect filters, tanks, and distribution lines.
Size my system ↗SDC ready
The ready SDC allows starting pilots, targeted applications, and operational validations quickly.
Get to Know the Ready SDC ↗05 · technical reading
Sources for further study
01
npj Clean Water — Reverse osmosis membrane biofouling
↗02Open review on causes, consequences, and countermeasures.
Environmental Research — ClO₂ in SWRO pretreatment filters
↗03Comparative study on cartridge filters before osmosis.
Desalination and Water Treatment — effect on polyamide membrane
↗04Experimental evaluation of exposure and performance.
IDA Journal — field experience in RO plants
↗Operational experience and need to validate conditions before scaling.
06 · potabilization subindices
Keep exploring the applications
Consolidated applicationWater tanksSpecialized applicationPiscinasSpecialized engineeringPost-reverse osmosisEstablished technical applicationSanitation and effluentsSpecialized professional applicationHospital and surfacesRegulated applicationFood industryPromising expanding applicationAgriculture and irrigation
Engineering applied to ClO₂