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Cover, more specifically for underground basins or reservoirs
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A reinforced concrete bridge for waste water treatment basins or ditches
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Solid matter separator for liquid wastes containing floating and precipitating particles
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Building object for waste water multi-stage bio-aeration
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Process for the preparation of drinking water for consumption
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Aeration device for waste water
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Method of conditioning soft water in order obtain drinking water
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Separating device for waste water containing floating and settling substances
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Separating plant for waste water loaded with deposit and floating material
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Separator for light liquids dispersed in waste water
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