Concentration of waterborne pathogenic organisms

Details Concentration of waterborne pathogenic organisms Concentration of waterborne pathogenic organisms

C - Chemistry, Metallurgy

12

Q

C12Q 1/24 (2006.01) B04B 5/04 (2006.01) C12M 1/26 (2006.01) C12N 1/02 (2006.01)

Patent

CA 2247127

A method of concentrating waterborne pathogenic organisms from water potentially contaminated by dilute densities of the organisms is described. Potentially contaminated water is directed along an elongated flow path (34) which rests generally within a plane perpendicular to an axis of rotation, and is subjected to centrifugal forces by rotating the flow path about the rotational axis. The method may be executed by use of a conventional continuous flow channel-type blood plasmapheresis centrifuge (30). The method has been tested for its capacity for recovering pathogenic protozoan parasites such as Cryptosporidium and Giarda from contaminated water, and recovery rates of up to 100 % have been observed.

Procédé de concentration d'organismes pathogènes en suspension dans l'eau dans de l'eau potentiellement contaminée par des densités diluées des microorganismes. L'eau potentiellement contaminée est dirigée dans une voie d'écoulement oblongue (34) reposant, d'une manière générale, dans un plan perpendiculaire à un axe de rotation, elle est ensuite soumise à des forces centrifuges par rotation de la voie d'écoulement autour de l'axe de rotation. Le procédé peut être exécuté à l'aide d'une centrifugeuse (30) de plasmaphérèse du sang du type à canaux d'écoulement continu classiques. On a testé la capacité du procédé à récupérer des parasites protozoaires pathogènes tels que Cryptosporidium et Giarda dans de l'eau contaminée, et l'on a observé des taux de récupération allant jusqu'à 100 %.

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