| 摘要 |
The invention relates to a filter element consisting of a molded body of porous concrete, which element is arranged in the water stream of a purification system. In particular, the filter element ( 10 ) is a molded pervious concrete layer arranged as a partition between a lower compartment ( 9 ) and an upper compartment ( 11 ) of a treatment chamber ( 8 ), wherein the water inlet ( 12 ) opens into the lower compartment ( 9 ) and a water outlet ( 17 ) issues from the upper compartment ( 11 ). The pervious concrete filter layer may contain one or more additives to enhance adsorption of pollutants, such as heavy metal ions, phosphorous, hydrocarbons or other target soluble pollutants.
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