How a Reverse Osomosis System works

RO system to remove nitrates from water in NZ

A Reverse Osmosis (RO) system purifies water by removing contaminants and impurities through a multi-stage filtration process.

Here's a simplified breakdown of how it works:



Image

How a Reverse Osmosis (RO) System Works:

A Reverse Osmosis (RO) system is a highly effective water purification method that removes contaminants through a series of filtration stages, delivering clean, safe, and great-tasting drinking water.

Pre-Filtration:

Water first passes through initial filters designed to protect the system and improve overall performance:

Sediment Filter:

Removes particles such as dirt, sand, and rust

Carbon Filter:

Reduces chlorine, chloramines, and chemicals that affect taste and odour

Reverse Osmosis Membrane:

At the core of the system is a semi-permeable membrane.

Water is pushed through this membrane under pressure, allowing only pure water molecules to pass while rejecting contaminants such as:

Heavy metals (lead, arsenic, etc.)

Nitrates and dissolved salts

Chemicals and impurities

Many bacteria and viruses

This stage provides deep purification at a molecular level, making RO one of the most advanced filtration technologies available.

Image

Post-Filtration:

After the membrane, water passes through a post-carbon filter:

Removes any remaining taste or odour

Enhances the final water quality

Storage Tank:

The purified water is stored in a pressurised tank, ensuring a steady supply is available whenever you need it.

Final Polishing

Before dispensing, water goes through a final polishing filter, delivering clean, fresh drinking water straight from the tap.

Key Points to Understand:

Pressure Driven: The system relies on water pressure to operate effectively

Wastewater: A small portion of water is discharged to carry away rejected contaminants—this is a normal part of the process

Benefits of Reverse Osmosis:

Removes a wide range of contaminants including nitrates, heavy metals, and dissolved solids.
Improves taste, odour, and clarity.
Provides high-quality drinking water at the point of use.
Ideal for both town and rural water supplies.

A Reverse Osmosis system is a proven, reliable solution for households wanting confidence in their drinking water quality—especially where contaminants such as nitrates or chemicals are a concern.

Tags:
Older Post Back to Technology Newer Post