Methods for controlling ph in water sanitized by chemical or...

Details Methods for controlling ph in water sanitized by chemical or... Methods for controlling ph in water sanitized by chemical or...

C - Chemistry, Metallurgy

02

F

C02F 1/66 (2006.01) C02F 1/00 (2006.01) C02F 1/50 (2006.01) C02F 1/68 (2006.01) C02F 1/46 (2006.01)

Patent

CA 2615604

The invention relates to the control of pH in water where hydroxyl ions are being produced by adding to the water an amount of transition metal salt sufficient to bind with hydroxyl into a slightly soluble or insoluble reaction product, thereby removing sufficient hydroxyl ion from the water to lower the pH thereof. This technique is particularly suitable for pH control in pool or spa water that is sanitized using chemical or electrolytic chlorination, where the sanitation process causes the pH in the water to rise. The invention also relates to apparatus for dispensing water treatment materials to water, and to methods for controlling phosphate levels and algae in water. A pH controlling com osition is also claimed.

L'invention concerne un procédé de réglage du pH d'une eau dans laquelle des ions hydroxyle sont produits. Ce procédé consiste à ajouter du sel de métal de transition dans l'eau en quantité suffisante pour que celui-ci se lie à l'hydroxyle et forme un produit réactionnel insoluble ou légèrement soluble, et permettre ainsi d'éliminer une quantité suffisante d'ions hydroxyle de l'eau pour en réduire le pH. Ce procédé est particulièrement approprié pour le réglage du pH de l'eau d'une piscine ou d'une station thermale aseptisée par chloration chimique ou électrolytique, le procédé d'aseptisation entraînant l'augmentation du pH dans l'eau. Par ailleurs, l'invention concerne un dispositif de distribution de produits de traitement dans l'eau, ainsi que des procédés de réglage des niveaux de phosphate et des algues dans l'eau. Par ailleurs, l'invention concerne une composition de réglage du pH.

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