C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 1/52 (2006.01) C02F 1/44 (2006.01) C02F 1/58 (2006.01) C02F 1/60 (2006.01) C02F 1/62 (2006.01) C02F 1/66 (2006.01) C02F 9/00 (2006.01)
Patent
CA 2533628
A wastewater treatment system comprising separation unit operations inhibits or promotes the formation and precipitation of species by controlling the pH of wastewater to be treated entering into the separation unit operations. The separation unit operations include first and second reverse osmosis devices. The first reverse osmosis device treats wastewater having pH that is less than about 3.5 and the second reverse osmosis device treats wastewater, from the first reverse osmosis device, having a pH that is about 6 or higher.
Cette invention concerne un système de traitement d'eaux usées comprenant des unités de séparation, lequel système inhibe ou active la formation et la précipitation d'espèces en régulant le pH des eaux usées à traiter entrant dans les unités de séparation. Les unités de séparation comprennent un premier et un deuxième dispositif d'osmose inverse. Le premier dispositif d'osmose inverse est chargé de traiter les eaux usées dont le pH est inférieur à environ 3,5 tandis que le deuxième dispositif d'osmose inverse est chargé de traiter les eaux usées provenant du premier dispositif d'osmose inverse et dont le pH est égal ou supérieur à environ 6.
Helwick Robert P.
Nagghappan Lnsp
Mcfadden Fincham
Otv Sa
Veolia Water Solutions & Technologies Support
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