Packings; Fillings; Grids (packing elements in general B01J19/30, B01J19/32)

Full Title

Biological treatment of water, waste water, or sewage > Aerobic processes > Packings; Fillings; Grids (packing elements in general B01J19/30, B01J19/32)

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• C02F 3/101
• C02F 3/102
• C02F 3/103
• C02F 3/104
• C02F 3/105
• C02F 3/109