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[Information] Explanation of the filtration material test in use

[Information] Explanation of the filtration material test in use

Implemented in accordance with the provisions of JWWA A103-1988! Information on screening tests, washing turbidity tests, and more.

This document explains the testing of filtration materials in use based on the Japan Water Works Association standard JWWA A103. It includes tests such as the "sieving test," "cleaning turbidity test," "adhesion turbidity test," and "quantitative test for metal contaminants." We continue to conduct tests in accordance with the regulations established in JWWA A103-1988. However, regarding the standard solution for turbidity measurement, we have changed from kaolin suspension to a polystyrene particle suspension for calibration due to the revision of water quality standards. [Contents (partial)] ■ Sieving test ■ Cleaning turbidity test ■ Adhesion turbidity test ■ Adhesion sludge volume test ■ Quantitative test for metal contaminants *For more details, please refer to the PDF document or feel free to contact us.

  • Filtration Equipment
  • Testing Equipment and Devices

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[Application Development Open] "Sand" that meets customer needs.

[Application Development Open] "Sand" that meets customer needs.

"Sand" with infinite possibilities - water supply, power plants, sports facilities, golf courses, universities, and pet food, with a wide range of achievements. We will respond with the best proposals for your inquiries.

"Rapid filtration sand" is sand used for filtration ponds in rapid filtration systems for water supply. The particle size of rapid filtration sand is defined by the effective diameter, which ranges from 0.45 to 0.70 mm, and the uniformity coefficient, which is 1.7 or less, according to the standards set by the Japan Water Works Association. Generally, rapid filtration sands with effective diameters of 0.5 mm and 0.6 mm are commonly used in many water purification plants. Our company can also produce sand in sizes tailored to our customers' needs. Please feel free to consult with us. 【Product Lineup】 ■ 15L small bags ■ FIBC (Flexible Intermediate Bulk Container) *For more details, please download the PDF or feel free to contact us.

  • Filtration Equipment
  • Other consumables

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Rapid filtration sand for water supply

Rapid filtration sand for water supply

Wide range of granularity adjustments according to purpose! Production of sand in sizes tailored to your needs is also possible.

"Rapid filtration sand" is the sand used in rapid filtration ponds employing the rapid filtration method. The particle size is defined by an effective diameter ranging from 0.45 to 0.70 mm, with a uniformity coefficient of 1.7 or less, as specified by the Japan Water Works Association standards. However, in general, rapid filtration sands with effective diameters of 0.5 mm and 0.6 mm are commonly used in many water purification facilities. Our company can also produce sand in sizes tailored to your needs, so please feel free to contact us. 【Features】 ■ Low content of impurities, flat or fragile sand, and sand iron ■ Washing turbidity is below 30 degrees ■ Density is between 2.57 and 2.67 g/cm3 ■ Loss on ignition is 1.3% or less ■ Friction rate is 3.0% or less *For more details, please refer to the PDF document or feel free to contact us.

  • Filtration Equipment
  • Other water treatment equipment

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Slow sand filter for water supply

Slow sand filter for water supply

Effective against cryptosporidiosis! Introducing high-quality filter sand rich in quartz.

"Slow sand filter sand" is the filtration sand used in slow sand filtration ponds. The slow sand filtration method is a historic filtration technique adopted when modern water supply systems began in London in the early 19th century, producing high-quality drinking water at a slow filtration rate of 4 to 5 meters per day. The effective diameter, which indicates the particle size, is specified to be between 0.30 and 0.45 mm, and the uniformity coefficient, which indicates the consistency of the particles, must be 2.0 or less according to the Japan Water Works Association standards. Only those that pass product testing are shipped to water purification plants across the country. 【Features】 ■ Low content of impurities, flat or weak sand, and sand iron ■ Washing turbidity is below 30 degrees ■ Density is between 2.57 and 2.67 g/cm³ ■ Loss on ignition is 1.3% or less ■ Friction rate is 3.0% or less *For more details, please refer to the PDF document or feel free to contact us.

  • Filtration Equipment
  • Other water treatment equipment

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Filter sand (for slow and rapid use)

Filter sand (for slow and rapid use)

The water filtration material made from Japanese raw materials is certified and registered by the Japan Water Works Association (JWWA)!

We would like to introduce our "slow/fast filtration sand" that we handle. The filtration material for water supply made from Japanese raw materials is certified by the Japan Water Works Association (JWWA). According to the Japan Water Works Association standard (JWWA A 103:2006-2), "Filtration sand must enable stable and efficient filtration and washing in filtration ponds and must comply with the specifications for main components, quality (physical properties), and quality (leachability)." 【Quality Specifications (Partial)】 <Physical Properties> ■ Washing turbidity [degrees]: 30 or below ■ Density [g/cm3]: 2.57 to 2.67 ■ Loss on ignition [%]: 1.3 or below ■ Abrasion rate [%]: 3.0 or below ■ Hydrochloric acid solubility [%]: 3.5 or below *For more details, please refer to the PDF materials or feel free to contact us.

  • Filtration Equipment
  • Other consumables

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