DIN 19557-1:1984-05
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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SEWAGE TREATMENT PLANTS - MINERAL FILTER MEDIA FOR PERCOLATING FILTERS - REQUIREMENTS, TESTING, DELIVERY, PLACING
Hardcopy , PDF
01-01-2004
English
01-01-1984
Applies to mineral filter media for percolating filters for the biological treatment of sewage. Mineral filter media, hereinafter briefly termed filter media, consist of natural stone such as scoriaceous lava, broken stone and coarse gravel, graded into size groups. Does not apply to filter media made of plastics.
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