BSI - BS 1438
Specification for media for biological percolating filters
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| Organization: | BSI |
| Publication Date: | 7 September 1971 |
| Status: | inactive |
| Page Count: | 32 |
| ICS Code (Sewage water): | 13.060.30 |
scope:
Single-sized materials, 63 mm to 14 mm, including coke, clinker, gravel, crushed stone, slag for treatment of water, sewage, trade effluents. Durability; sizes; descriptions of shape, nature of surface and group classification; flakiness, cleanness, sampling and testing; supplier's certificate; independent tests. Notes on use appended.
Document History
March 5, 2004
Aggregates - Single-sized aggregates for use as a medium in biological percolating filters
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BS 1438
September 7, 1971
Specification for media for biological percolating filters
Single-sized materials, 63 mm to 14 mm, including coke, clinker, gravel, crushed stone, slag for treatment of water, sewage, trade effluents. Durability; sizes; descriptions of shape, nature of...
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