Sterile Disinfection
Microbial control without adding a chemical to the water — ozone generated on site, and ultraviolet light applied in the pipe.
Chlorination disinfects by leaving something behind. These two systems disinfect by doing something — ozone oxidises cell walls, UV light scrambles DNA — and then leave nothing behind at all. No taste, no odour, no chlorinated by-products, no pH shift, no chemical drum in the yard.
The absence of a residual is both the point and the constraint. It is why these are the only disinfectants acceptable inside a purified-water loop or a UPW polish — and why where you place them matters more than how big you buy them.
Disinfection is not one stage. Ozone works in the tank, UV works in the line — and both appear again at the far end of the train, where stored water has had time to grow something.
Both systems are sized on the same quantity — how much disinfecting power meets each litre, for how long. Everything else about their design follows from that.
Neither system protects water downstream of itself. A UV chamber sterilises what passes through it and nothing more; ozone decays back to oxygen within minutes. So they are placed where recontamination cannot follow — at the loop return, immediately before the point of use, or continuously on a recirculating tank — and never as a one-off dose at the front of a long dead-legged pipe run.
One is a chemical made on site and destroyed after use. The other is a lamp. They overlap on disinfection and diverge on everything else.
If the water only needs to be microbially clean at one point, UV is almost always the answer. If it also needs colour, odour, COD or taste dealt with — or a tank kept clean between batches — that is ozone's territory.
On most plants these two are not alternatives — they are a sequence. Each covers the other's blind spot.
Client names withheld under confidentiality. Full commissioning data available on request.
With your flow rate, water quality and target — whether that is a GMP loop specification, a packaged-water standard or a COD limit — we will return the dose calculation, the equipment configuration and where in the train it belongs.