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C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
C02F9/00—Multistage treatment of water, waste water or sewage
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FR603448D1924-10-101925-09-21Procédé pour clarifier et décolorer les eaux résiduelles des usines travaillant à l'aide de couleurs
ExpiredFR603448A
(fr)
Dispositif de production d'écume pour des installations de clarification d'eaux résiduelles par le procédé de flotation à l'aide d'écume