Process for the biochemical purification of waste water containing organic constituents which favour the undesirable development of filamentous bacteria and/or the formation of bulking sludge
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Method for eliminating organic and inorganic bound nitrogen from domestic and industrial waste water
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Framework for organization of organic organisms bundet quantity fraon hushaolls- och industriavloppsvatten
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Domestic effluent water purification process
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Process and device for the purification of waste water using the activated sludge process
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Improvements in or relating to rotary drum filters for liquids
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Method and device for separating solid substances, in particular fibers, from suspensions containing them by means of rotating drum filters
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Method and apparatus for sewage disposal according to the activated sludge process
