Technical standard of quartz sand filter media for water treatment

Recently, many customers have called to inquire about the technical standards of quartz sand filter materials. Today, I will give you a detailed introduction. 1. The sum of the crushing rate and wear rate of the quartz sand filter material should not exceed 1.5% (the percentage is based on mass, the same below). 2. The density of quartz sand filter material should not be less than 2.55g/cm3.

Except for those with special requirements for density during use. 3. The quartz sand filter material should not contain visible soil, mica and organic impurities. The water leachate of the filter material should not contain toxic substances, and the mud content should not exceed 1%. The content of light substances with a density less than 2g/cm3 should not exceed 0.2%.

4. The loss on ignition of the quartz sand filter material should not exceed 0.7%. 5. The hydrochloric acid soluble rate of the quartz sand filter material should not exceed 3.5%. Particle size of quartz sand filter material 1. The particle size range of quartz sand filter material in a single-layer or double-layer filter material filter tank is generally 0.5-1.2mm.

The particle size range of quartz sand filter material in the three-layer filter material filter tank is generally 0.5-0.8mm. 2. Among the quartz sand filter materials in various particle size ranges, the particle size smaller than the specified lower limit should not exceed 3%, and the particle size larger than the specified upper limit should not exceed 2%. 3. The effective particle size and non-uniformity coefficient of the quartz sand filter material shall be determined by the user.

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