Shallow Sand Filter

The sand filter is a highly efficient filtration device that uses quartz sand as the filtering medium. Under a certain pressure, water with higher turbidity is passed through a specific thickness of granular or non-granular quartz sand, which effectively traps and removes suspended solids, organic matter, colloidal particles, microorganisms, chlorine, odors, and certain heavy metal ions. The result is reduced water turbidity and improved water quality.

This type of filter uses quartz sand as the filter media, which is particularly effective in removing impurities from water. It offers several advantages, including low filtration resistance, large specific surface area, strong acid and alkali resistance, and excellent anti-fouling performance. One of its unique benefits lies in the adaptive design of both the filter media and the filter itself:

• During filtration, the filter bed naturally forms a “loose-on-top, dense-on-bottom” structure, allowing it to adapt to various raw water concentrations, operating conditions, and pretreatment processes, while consistently ensuring high-quality effluent.

• During backwashing, the filter media expands fully, resulting in excellent cleaning performance.

The sand filter is particularly effective at removing suspended solids from water. It also shows significant removal performance for colloids, iron, organic compounds, pesticides, manganese, bacteria, viruses, and other contaminants. Key advantages include high filtration speed, fine filtration accuracy, and large dirt-holding capacity.

Quartz sand filters are widely used across many industries, including:

• Power generation

• Electronics

• Beverage production

• Municipal water treatment

• Petroleum and petrochemical industries

• Metallurgy

• Textiles and paper making

• Food and beverage processing

• Swimming pools

• Municipal infrastructure

They are suitable for process water, domestic water, circulating water, and advanced wastewater treatment applications.