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Filter sand (for rapid and slow)
Filtration methods using filtered sand are the basis of purified water, and the importance of [filtered sand], which performs physical treatment (capture of turbid components) in rapid filtration and biological treatment in slow sand filtration, is well known. In recent years, with the aim of increasing the filtration rate and improving the water recovery rate, improvements have been made to the composition of the filter media and the direction of the flow path, and further quality improvement is desired along with the results. As a manufacturer of filtered sand, we have thoroughly pursued quality control and production technology since 1965.
Product Specifications
Standard specifications for filtered sand (for rapid sand filtration)
| Effective diameter | 0.35mm | 0.5mm | 0.6mm | 1.0mm | Dimensional regulation (JWWA A 103-1:2006-2) |
|---|---|---|---|---|---|
| 0.45 – 0.70mm | |||||
| Equal coefficient | 1.5 less, 1.4 less | 1.7 less | |||
| Maximum diameter | 2.0 mm less | 2.8 mm less | 2.0 mm less | ||
| Minimum diameter | 0.3mm more | 0.3mm more | |||
| appearance | Clean, granular | – | |||
We also manufacture products with the specified effective diameter and uniformity coefficient upon request.
Please note that the effective diameter includes an error value.
Standard product of filtered sand (for slow sand filtration)
| Effective diameter | 0.30 – 0.45mm | Dimensional regulation (JWWA A 103-1:2006-2) |
|---|---|---|
| 0.30 – 0.45mm | ||
| Equal coefficient | 2.0 less | 2.0 less |
| Maximum diameter | 2.0 mm less | 2.0 mm less |
| Minimum diameter | 0.18 mm more | 0.18 mm more |
| appearance | Clean, granular | – |
We also manufacture products with the specified effective diameter and uniformity coefficient upon request.
Please note that the effective diameter includes an error value.
Quality standard for filtered sand
| Our products (1) | Our products (2) | Quality regulations (Physical properties) (JWWA A 103-1:2006-2) |
|
|---|---|---|---|
| density | 2.64g/cm3 | 2.63g/cm3 | 2.57 – 2.67g/cm3 |
| Cleaning turbidity | 9 degrees | 16 degrees | 30 degrees less |
| Ignition weight loss | 0.31% | 0.39% | 1.3% less |
| Abrasion rate | 0.40% | 0.51% | 3.0% less |
| Hydrochloric acid solubility | 0.16% | 0.31% | 3.5% less |
Packing
Packaging unit：PE bag (20L), flexible container bag(0.6m3 included)
* Pallets can be stacked upon request.
| When ordering, specify the specifications, quantity, packing style, _and presence / absence of pallets. If you would like a JWWA certified product, please let us know. |
JWWA certified product
For the first time in Japan, it has been certified as a certified factory for all filter media (filter sand, anthracite, manganese sand, filter gravel) in “JWWA A103: 2006-2 Water Filter”.
We will contribute to the safe, tough and sustainable water supply business.
* Quality certified products are guaranteed to comply with the Ministry of Health and Welfare Ordinance and JWWA standards.
* Reduce the time and effort of individual quality confirmation by business entities!
* If the pipeline is a certified product, the heart of water purification treatment and the filter medium are also certified products!
Head Office
1-12-11 Tagawakita, Yodogawa-ku,Osaka
532-0021
Overseas Business Department
TEL +81-6-6301-6460
FAX +81-6-6308-3022
