UNE - Spanish national standards

Wastewater treatment plants - Part 16: Physical (mechanical) filtration

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Wastewater treatment plants - Part 3: Preliminary treatment

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Wastewater treatment plants - Part 4: Primary treatment

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Wastewater treatment plants - Part 5: Lagooning processes

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Wastewater treatment plants - Part 6: Activated sludge process

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Wastewater treatment plants - Part 7: Biological fixed-film reactors.

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Wastewater treatment plants - Part 8: Sludge treatment and storage

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Wastewater treatment plants - Part 9: Odour control and ventilation

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Transportable gas cylinders - Seamless, hoop-wrapped composite cylinders.

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Aluminium and aluminium alloys - Terms and definitions - Part 1: General terms

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