Water Purifiers

A water purifier is a device or system designed to remove impurities, contaminants, and undesirable substances from water, making it safe and palatable for drinking or other specific uses. These impurities can include suspended particles, dissolved solids, chemicals, heavy metals, bacteria, viruses, and sediments.

Types of Water Purifiers

Point-of-Use (POU) Purifiers: Installed at the tap or sink for immediate access to purified water.

Faucet-Mounted Filters: Attach directly to the faucet.

Countertop Filters: Sit on the counter, diverting water from the faucet.

Under-Sink Filters: Installed beneath the sink, often with a dedicated faucet.

Pitcher Filters: Gravity-fed filters for small volumes.

Point-of-Entry (POE) / Whole-House Purifiers: Treat all water entering the home, typically installed at the main water line.

Gravity-Based Purifiers: Use multi-stage filtration by gravity, no electricity needed.

RO (Reverse Osmosis) Purifiers: Use a semi-permeable membrane to remove dissolved solids, heavy metals, and microorganisms. Often combine with UV and other filters.

UV (Ultraviolet) Purifiers: Disinfect water by killing bacteria and viruses using UV light, without chemical addition.

UF (Ultrafiltration) Purifiers: Use a hollow fiber membrane to remove suspended solids, bacteria, and cysts.

Activated Carbon Filters: Remove chlorine, organic chemicals, bad taste, and odor.

Sediment Filters: Remove larger particles like sand, silt, and rust.

Softening Systems: Remove hardness minerals (calcium, magnesium) using ion exchange resin.

Commercial/Industrial Purifiers: Larger scale systems for businesses, hospitals, or industrial processes.

Applications in Various Industries

Residential Use: Providing safe drinking water for homes, reducing health risks and improving taste.

Commercial & Office Spaces: Water dispensers, coffee machines, ice makers.

Food & Beverage Industry: Ensuring water quality for beverage production, food processing, and cleaning.

Healthcare & Laboratories: Providing purified water for medical equipment, laboratory analyses, and sterile processes.

Pharmaceutical Industry: Producing high-purity water for drug manufacturing, critical for product quality and regulatory compliance.

Hospitality: Hotels and restaurants for drinking water and cooking.

Material Selection Considerations

• Filter Housings: Food-grade plastics (e.g., PP, SAN, ABS) for point-of-use, or stainless steel for commercial/industrial units and whole-house systems, ensuring durability and chemical resistance.
• Sediment Filters: Polypropylene melt-blown, wound string.
• Activated Carbon: Granular activated carbon (GAC) or carbon blocks from coconut shell or coal.
• Membranes: Polymeric materials like polyamide (RO), polysulfone (UF), PVDF (UF).
• Piping & Connectors: Food-grade plastic tubing (e.g., LLDPE, PE) or stainless steel.
• UV Lamp Chambers: Stainless steel for the reactor chamber to ensure proper UV reflection and prevent corrosion. Quartz sleeve for the UV lamp.
• Storage Tanks (RO systems): Food-grade plastic or stainless steel, often with a butyl diaphragm.
• Seals & Gaskets: Food-grade elastomers like EPDM or silicone.
• Faucets: Lead-free brass, stainless steel, or chrome-plated.
• Electronic Components: Encapsulated and protected to withstand humidity and potential water exposure.