Thach Hien

Thach Hien aims to develop into an enterprise that has the trust of domestic and foreign customers and partners; to become a manufacturing and trading enterprise in the field of industrial materials with advanced technology and stable quality.
“Understanding customers” and being devoted to “reputation”, maintaining stable “Quality” is the only way for our company to survive and develop sustainably in the future.

Quartz sand for water filter

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Delivery: Nationwide, international
Payment: Flexible
Please contact 0986.306.052 to receive detailed product information

Quartz sand (silica sand) is a popular filter material in water treatment thanks to its superior physical and chemical properties. Below are details on the application characteristics of quartz sand in water filtration:

CHARACTERISTICS OF QUARTZ SAND

Chemical composition

Mainly  SiO₂  (over 95%), few impurities (Fe, Al, Ca) do not react with water and chemicals, ensuring safety for water after filtration.

Chemical inertness: Insoluble in water, does not produce toxic substances.

 Physical properties

  • Uniform particle size: Usually 0.4–1.2 mm, suitable for retaining dirt without clogging the system.
  • High hardness (7/10 Mohs scale): Abrasion resistant, does not crumble under water pressure, long life.
  • Porous structure: Large surface area, increased ability to retain residue and microorganisms.
  • Heat resistance: Stable operation in high temperature environment.

  • Filtration capacity: Effectively removes suspended particles, solids, dirt, algae, and some heavy metals (Fe, Mn) thanks to mechanical filtration and surface adsorption.

APPLICATIONS IN WATER FILTRATION

1. Domestic water filtration system

Rough filter in family filter tank or water purifier, remove dirt, mud, organic impurities.

Combined with activated carbon and filter gravel to create a multi-layer filtration system.

2. Industrial water treatment

Boiler feed water filter, cooling: Removes scale to avoid scale buildup in pipes.

Industrial wastewater treatment: Retains grease, chemicals, and solid particles before discharging into the environment.

3. Clean water plant

Used in fast and slow filter tanks to treat surface water (rivers, lakes) or groundwater.

Combined with  anthracite  (coal) in a multi-layer filter tank to increase filtration efficiency.

4. Desalination and seawater filtration

Pre-treatment  before entering the RO (reverse osmosis) or distillation system, helps protect the filter membrane from clogging.

5. Treatment of water contaminated with alum and iron

Retain alum residue, oxidize iron (Fe²⁺ → Fe³⁺) and filter iron precipitate.

6. Swimming pool

Cleans pool water by removing algae, bacteria and suspended solids.

OUTSTANDING ADVANTAGES

  • Low cost : Much cheaper than synthetic filter materials.
  • Easy to operate : No complex technical requirements.
  • Environmentally friendly : No toxic emissions, can be reused after backwashing.
  • High durability : Lifespan 3-5 years with regular maintenance

Quartz sand is the first “shield” in the water filtration system, ensuring clean, safe water for daily life and production. Thanks to its efficiency, durability and economy, it has become an irreplaceable material in the global water treatment industry.