As the filtration technology has advanced, the method has been improved from [single-layer filtration] using filtered sand to [two-layer filtration] using anthracite together. Furthermore, as a more advanced filtration method used for countermeasures against cryptosporidium and pretreatment for pure water production, there is a [three-layer filtration method] that uses garnet. Garnet is a reddish-brown silicate mineral with a high density of about 4, and is used as a finer particle size than filtered sand to demonstrate its power.
Garnet standard product
|Name||Garnet (for filtration)||Garnet (for support)|
|Effective diameter||0.30mm||1.0 – 2.5mm|
|Equal coefficient / content rate||Equal coefficient 1.5 less||Content rate 85% less|
|Density||3.8 – 4.1g/cm3|
We also manufacture products of the specified size upon request.
(Caution) Since this product is a natural mineral, there are some differences in its chemical composition.
Packaging unit：Cross bag(12.5L/25kg)
* Pallets can be stacked upon request.
|When ordering, please specify the specifications, quantity, packing style, _and the presence _or absence of pallets.|
About garnet support material
Since garnet has a high density, if the same support material as filtered sand or anthracite (for example, filtered gravel No. 4 to 7) is used, the filtered gravel and garnet will be mixed [mixed bed state]. As a result, short circuits in raw water and uneven landing of the support floor may occur, making it difficult to achieve the expected filtration performance.
When using garnet as a filter material, we recommend that you use a high-density support material [supporting garnet] on the filtered gravel as a support floor directly underneath.
1-12-11 Tagawakita, Yodogawa-ku,Osaka
Overseas Business Department