The pressure sand filter, also known as the multi-stage sand filter, achieves filtration by mixing different filter media in a fixed proportion. These include fine and coarse media, which are designed to remove large suspended solids and small contaminants from the water. These filters are widely used in water treatment processes and can be used alone, but generally as a pre-filtration for advanced water treatment.

• Three-layer filter media
• Single-stream
• According to the requirements of internal surface anti-corrosion, it is divided into:

• Pre-filtration treatment of raw water in power generation, chemical, papermaking, beverage and other industries.

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