C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
134/35
C02F 1/66 (2006.01) C02F 1/68 (2006.01)
Patent
CA 2010352
Blocks, weighing about 35 lbs., formed of a homogenous mixture of about 75% gypsum and 25% lime, are strategically placed in surface water that is being damaged by acid rain, where, by timed release of lime, the pH of the water is maintained at about 6.5 pH.
Des blocs d'environ 35 lb constitués d'un mélange comportant environ 75 % de gypse et 25 % de chaux sont placés de façon stratégique dans des eaux superficielles dégradées par les pluies acides. Lesdits blocs libérant progressivement la chaux, le pH de l'eau se maintient à environ 6,5.
National Gypsum Company
Osler Hoskin & Harcourt Llp
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