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DE19936757A1
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Waste water filter medium compressed and compressed by cable arrangement lowering filtration costs for large volume of water
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DE19738067A1
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Filtration apparatus for tertiary treatment of waste water
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DE19704897A1
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Waste water aeration frame assembly hinged to side-frame and hooked to winch
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DE19636153A1
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Assembly which removes cleaned water lifted from sequencing batch reactor basin
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DE4424298A1
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Activated sludge treatment of waste water in single tank
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DE4133805C2
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Processes for biological wastewater treatment
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VENTILATION DEVICE FOR A LIQUID
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Device for injecting compressed air into a liquid
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Aeration device esp. for waste water - has stable connection between aeration tube and air supply pipe
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Aeration plant with funnel-shaped secondary clarifier
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They break to remove solid components from flowing liquids
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Processes for biological wastewater treatment
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DE3818646A1
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Process for biological waste water purification
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DE3712433A1
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Process for biological waste water purification
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Device for the fine-bubble introduction of a gas into a liquid
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DE3623931A1
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Activation plant having a floating aeration bridge
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Activation unit for biological waste water purification
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DE3602736A1
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Process and device for the biological degradation of phosphorus from waste water
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DE3543408A1
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Process for sewage purification using activated sludge
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DE3332074A1
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Floating aerator for waste-water ponds
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