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Filter material for removing phosphor from waste water originating from e.g. scattered settlement and/or leachate, comprises lightweight aggregate, calcium hydroxide and water which have been mixed by grinding during preparation
Filter material for removing phosphor from waste water originating from e.g. scattered settlement and/or leachate, comprises lightweight aggregate, calcium hydroxide and water which have been mixed by grinding during preparation
A filter material comprises lightweight aggregate, calcium hydroxide and water which have been mixed by grinding during the preparation of filter material. Independent claims are also included for the following: (1) the preparation of the above filter material by (A) wetting crushed lightweight aggregate and/or lightweight aggregate granule mixture with water; (B) grinding the wetted crushed lightweight aggregate and/or lightweight aggregate granule mixture; and (C) adding calcium hydroxide to the ground crushed lightweight aggregate and/or lightweight aggregate granule mixture while simultaneously continuing grinding; and (2) a filter cartridge, e.g. tube, bag, and/or basket, containing the above filter material.
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