Phytoplankton growth inhibitors and a water purification...

Details Phytoplankton growth inhibitors and a water purification... Phytoplankton growth inhibitors and a water purification...

A - Human Necessities

01

N

A01N 59/00 (2006.01) A01K 63/04 (2006.01) A01N 59/06 (2006.01) C02F 1/50 (2006.01) C02F 1/52 (2006.01) C02F 1/72 (2006.01)

Patent

CA 2396063

It is intended to provide convenient phytoplankton growth inhibitors which can reduce phosphorus components causing eutrophication in water and inhibit the growth of phytoplanktons and algae and a method of water purification in a closed water system. These objects can be achieved by adding a peroxide (in particular, calcium peroxide and/or magnesium peroxide) in an amount of 10 to 35% by mass based on the total mass of a phytoplankton growth inhibitor. The effect can be further potentiated by adding one or more iron compounds selected from among iron salts, iron oxide and iron hydroxide in an amount of 0.01 to 15% by mass, in terms of iron (Fe), based on the total mass of the phytoplankton growth inhibitor.

L'invention porte sur des inhibiteurs appropriés de la prolifération du phytoplancton qui peuvent réduire les composants de phosphore entraînant l'eutrophisation de l'eau et qui inhibent la prolifération des phytoplanctons et des algues. L'invention porte également sur un procédé de purification de l'eau dans un réservoir de filtration à circuit fermé. Le procédé de cette invention consiste à ajouter un peroxyde (notamment un peroxyde de calcium et/ou un peroxyde de magnésium) dans une quantité comprise entre 10 et 35 % en poids sur la base du poids total d'un inhibiteur de la prolifération du phytoplancton. L'effet peut être également accru si on ajoute un ou plusieurs composés de fer sélectionnés parmi des sels de fer, l'oxyde de fer et l'hydroxyde de fer dans une quantité comprise entre 0,01 et 15 % en poids, en termes de fer (Fe), sur la base du poids total de l'inhibiteur de la prolifération du phytoplancton.

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