Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Fluid pressure responsive
Reexamination Certificate
2007-03-06
2007-03-06
Fortuna, Ana (Department: 1723)
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Fluid pressure responsive
C210S085000, C210S094000, C210S321750, C210S321740, C210S097000, C210S137000, C210S456000, C210S321600
Reexamination Certificate
active
10090802
ABSTRACT:
The invention concerns a monitoring unit [10] for monitoring the condition of a semi-permeable membrane [24] in a water purification system, and particularly the condition of spiral membrane in a reverse osmosis water purification system. The monitoring unit [10] comprises a flow chamber [12] that includes an inlet for permitting ingress of a feed fluid into the flow chamber [12], and a feed fluid outlet [22] for permitting at least partial through-flow of the feed fluid through the flow chamber [12] such that cross-flow conditions apply in the flow chamber [12]. The semi-permeable membrane [24] is at least partly supported in the flow chamber [12]. The monitoring unit [10] further comprises at least one fluid outlet [18] arranged in fluid communication with the flow chamber [12] for permitting egress of fluid from the monitoring unit [10] after having passed through the membrane [24]; and an inspection window [20] for permitting visual inspection of the semi-permeable membrane [24]. The invention also extends to the use of such a monitoring unit [10] in evaluating various operating parameters of such a system, and to a water purification system including such a monitoring unit [10] or test cell.
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Augustyn Petronella Maria
Jacobz Edmund Petrus
Maartens André
Peet Douglas
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Fortuna Ana
Sasol Technology (Pty) Limited
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