How to Integrate Water Treatment Into Small Bottling Lines

Which treatment stages does your water actually need?

The raw water analysis decides it. Surface water usually needs multi-media filtration, carbon and RO; hard well water needs softening before the RO; low-hardness municipal water may only need carbon and disinfection. A package bought without an analysis is either oversized or short of a stage.

Reverse osmosis is a powerful water purification technique that effectively removes contaminants and impurities from water by applying pressure to push it through a semi-permeable membrane.

Why does RO recovery limit the line?

RO produces permeate and rejects concentrate. The recovery rate sets how much of the feed becomes product water, and the buffer tank size sets how long the line can run when the RO is in flush or maintenance. A filler that outruns the RO starves at shift start, which looks like a filler problem and is not.

Throughput and change-part lists are on the Water Treatment page rather than in this note.

UV or ozone for disinfection?

UV leaves no residue and acts instantly, but it has no residual effect in the bottle. Ozone leaves a residual that protects the water in storage, and it needs a destruction step before filling. Many plants run both: ozone for storage, UV as a final barrier.

Reference unit for this duty: the Pre-treatment.

How is RO capacity matched to the filler?

By permeate flow against filler demand plus the buffer tank volume. The tank covers the RO flush and any short stop; without it, the filler waits on the membrane. Sizing the RO at exactly the filler rate is a common design error.

The same question is worked through from another angle in Integrating Water Treatment Systems in Bottling Lines.

Frequently asked questions