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reverse osmosis


Reverse Osmosis

"Reverse Osmosis uses membrane technology to deliver virtually pure water from any source"

The term reverse osmosis comes from the process of osmosis, the natural movement of solvent from an area of low solute concentration, through a membrane, to an area of high solute concentration if no external pressure is applied. In simple terms, reverse osmosis is the opposite of osmosis. It is the process of pushing a solution at high pressure through a filter that traps the solute on one side and allows the pure solvent to be obtained from the other side.

Reverse osmosis will remove most elements from a water source. We understand the critical nature of pure water to the process.

Reverse Osmosis Performance Chart

The reverse osmosis membrane is extremely fine and sensitive to fouling and contaminants. For this reason the pretreatment to and RO plant is critical. The supply water should be softened to eliminate the potential for scale fouling the membrane. The supply should then be filtered using fine sediment filters to remove debris and carbon filters to remove any chlorine, organics, taste, odours etc.. as seen on the above chart. RO membranes will be consumed by chlorine very rapidly if it is allowed.

Halpin & Hayward can manufacture specialized RO units for specific applications such as hospital implement autoclaves. These autoclaves have a pure, hot water requirement that must be delivered above a specific pressure. Our skid mounted unit comes prebuilt for ‘plug & play’ ease of installation. On the skid is all required pumps, pressure sets, the filtration and softening pretreatment, the RO system and a lagged, stainless steel hotwell. (maintained at >75ºc) (insert alternating pic of skid RO)

Halpin & Hayward supply, install & commission all manner of RO systems.

We also supply and fit all necessary Parts & spares, and other consumables.

Our Dublin warehouse holds stock of our most commonly used products and what we do not have in stock can be quickly sourced.

Undersink RO – STELLA Commercial & Industrial RO

Should you require further information or a quotation please contact our offices.

What is Reverse Osmosis?

It’s like putting water through a microscopic filter! RO uses pressure to push water through a semi-permeable membrane, allowing water molecules to pass through while leaving behind most contaminants like salts, minerals, and even bacteria. Think of it as straining unwanted particles out of your water.

What does RO remove?

RO effectively removes a wide range of impurities, including:

  • Dissolved solids: Salts, minerals, and hardness minerals like calcium and magnesium.
  • Chemicals: Fluoride, chloride, nitrates, and even some heavy metals.
  • Microorganisms: Bacteria, viruses, and protozoa (when properly maintained).
Is RO water healthy?

While RO removes many harmful contaminants, it also removes some beneficial minerals like calcium and magnesium. Some claim this can affect mineral intake, though current research doesn’t show significant health risks. If concerned, consider adding mineral supplements or choosing an RO system with a mineral remineralization filter.

Does RO waste water?

Yes, the RO process produces wastewater alongside purified water. The ratio varies depending on your system, but modern ones are becoming more efficient. Consider using the wastewater for watering plants or other non-drinking purposes.

Does RO remove chlorine?

Most RO systems come with pre-filters that remove chlorine, which is beneficial as it can damage the RO membrane.

Is RO water good for cooking?

RO water can be good for cooking as it reduces impurities that might affect taste or appearance. However, some prefer a slight mineral content for taste, so experiment and see what you like.

Does RO affect coffee and tea taste?

The lack of minerals in RO water can affect the taste of coffee and tea for some people. Consider adjusting brewing methods or adding a pinch of mineral supplement to enhance flavor.

How do I maintain an RO system?

Regularly changing pre-filters and the RO membrane are crucial for optimal performance and lifespan. Follow your system’s specific maintenance instructions.

Is RO right for me?

RO can be beneficial if you have concerns about your tap water quality, high levels of specific contaminants, or simply prefer the taste of RO water. Consider your water quality, needs, and budget before making a decision.