Solution
Protect Membranes. Preserve Performance.
RO performance depends on everything that happens before and around the membrane. C-Water connects pretreatment, filtration, chemical protection, RO, monitoring and optimisation into one treatment strategy.
01Why It Matters
RO & Membranes
Membranes are consumables with a long expected life and a short achieved one when the conditions are wrong. Replacement cost is visible; the cost that usually dominates is the energy spent pushing water through a fouled element, the water lost to a reduced recovery, and the production interrupted by an unplanned clean.
02Common Problems
What Goes Wrong.
Particulate and biological fouling
Solids and biofilm accumulate on the feed side, raising differential pressure across the stage and reducing the flow the system can produce.
Scaling in the concentrate
Sparingly soluble salts exceed saturation in the reject stream and deposit on the last elements first.
Rising differential pressure
The clearest early signal that something is accumulating — and the one most often noticed only after it has become expensive.
Frequent cleaning
Every clean costs downtime, chemical and a small amount of membrane life. Rising frequency is a pretreatment message, not a cleaning problem.
Reduced recovery
Operating at lower recovery to avoid scaling means producing the same permeate from more feed water.
Inconsistent permeate quality
Rising salt passage points to membrane damage or scaling rather than to fouling, and the distinction changes the response entirely.
03Operational Risks
What It Costs the Operation.
Shortened membrane life
Repeated aggressive cleaning and chronic fouling both shorten the element’s useful life.
Higher specific energy
A fouled system needs more pressure for the same output.
Interrupted water supply
Where RO feeds a process or a boiler, its availability defines the plant’s availability.
Unplanned intervention
Emergency cleaning and element replacement rarely happen at a convenient moment.
04The C-Water Approach
How We Work the Problem.
- 01
Characterise the feed
Full analysis plus SDI, turbidity and organic load. Projection software is only as good as the water data behind it.
- 02
Fix pretreatment first
Filtration degree, oxidant removal and biological control are settled before antiscalant is considered.
- 03
Select against the concentrate
Antiscalant is chosen for the chemistry at the tail of the system at the intended recovery, not for the feed.
- 04
Normalise the data
Normalised flow, salt passage and differential pressure separate real decline from temperature and pressure variation.
- 05
Clean on diagnosis
The cleaning chemistry follows what the data says is accumulating, and is triggered by a threshold rather than a calendar.
05Technology Stack
The System, Stage by Stage.
Each stage changes what the next one has to deal with. This is the sequence C-Water engineers around.
- 01
Source Water
Characterised
- 02
Pretreatment
Bulk load removed
TIMEX - 03
Cartridge Filtration
Final barrier
TIMEX - 04
Chemical Protection
Antiscalant dosed
Kurita Europe - 05
RO
Separation
- 06
Monitoring
Normalised data
Walchem - 07
Cleaning
On diagnosis
- 08
Optimisation
Recovery reviewed
Technology Stack
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Related Knowledge
Let’s Talk About Your System.
Tell us the operating conditions and what you are seeing. We will confirm the water chemistry before recommending anything.