Emd Millipore Corporation

Merck Patent Gmbh

Didier Meyer

Yves Gaignet

Julien Bole

Laurent Moreau

Ichiro Kano

Pascal Roitel

The invention provides a water purification and dispensing system, preferably for producing ultrapure water and offering the purified water at dispensing sites. The system () comprises a first purification stage () for purifying water to a first water purity grade, a water recirculation loop () including a second purification stage () for purifying water to a second water purity grade higher than the first purity grade and a dispensing portion () for the purified water, and a reservoir () arranged to store the water purified at the first purification stage () through a first connecting flowpath () and to deliver the stored water to the water recirculation loop () through a second connecting flowpath (). A 3-way valve () is provided in the flowpath between the first purification stage () and the reservoir () to selectively block the flow of purified water to the reservoir () and to drain the purified water from the first purification stage (). A third connecting flowpath () is branched from said dispensing portion () and is connected to the first connecting flowpath () upstream of an UV radiation treatment device ().

Water purification and dispensing system and method of operating such system

The invention concerns a treated water purification system () comprising a closed water flow loop () said loop comprising at least one treated water supply point (A), at least one point of use (U) of purified water, a pump means (), a sterilization means () and a filtration means (), characterized in that the zone () comprises the supply point (A) and a water extraction point (P), situated upstream of the supply point (A), and in that the extraction point (P) and the supply point (A) are both situated in a sector (B) of the sterilization zone () that is isolated from the two connection points (R, R) of the loop () to the zone () by two other sectors (A,C) of the zone (). Method for use of such a system.

System and method for purification and distribution of water with separation barrier taking away the biological contamination

The invention concerns a treated water purification system () comprising a water flow loop (), said loop () being closed onto a tank () of treated water to purify, and said loop () successively comprising, in the direction of flow of the water downstream of the tank (), at least one pump means (), at least one first filtration means (), at least one second filtration means () and at least one point of use (U), the system () being characterized in that it further comprises at least one diversionary pipe () linking the first filtration means () to the tank (), and a loop return pipe () linking the second filtration means () to the tank (). Method for use of such a system.

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Paris, France

Didier Meyer