METHOD FOR OPERATIONAL CONTROL OF A WATER TREATMENT UNIT AND WATER TREATMENT UNIT FOR IMPLEMENTING SUCH A METHOD

METHOD FOR OPERATIONAL CONTROL OF A WATER TREATMENT UNIT AND WATER TREATMENT UNIT FOR IMPLEMENTING SUCH A METHOD

The method for controlling a water treatment unit in operation comprising at least the following steps of determining (1000) a normalized flow-rate value (D48) per unit of surface area and per unit of pressure of an ultrafiltration membrane (48); water treatment (1004) if a difference (Δ1) between t...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: AL MEZAYEN, Khaled-Valentin, MASSON, Sylvain
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
TRANSPORTING
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Beschreibung
Zusammenfassung:The method for controlling a water treatment unit in operation comprising at least the following steps of determining (1000) a normalized flow-rate value (D48) per unit of surface area and per unit of pressure of an ultrafiltration membrane (48); water treatment (1004) if a difference (Δ1) between the normalized flow value and a first reference value (D481) is less than or equal to a first threshold value (D1); regeneration (1010) of the ultrafiltration membrane (48) if the difference (Δ1) between the normalized flow-rate value and the first reference value (D481) is greater than the first threshold value (D1). The regeneration step (1010) comprises at least sub-steps consisting of backwashing (1011) the ultrafiltration membrane (48); interrupting (1012) and maintaining interrupted the circulation of water in the treatment unit (2); heating (1014) the water in contact with the ultrafiltration membrane (48) in an filtration system with ultrafiltration membrane (44, 58) during the interruption sub-step; and after the heating step, backwashing (1016) the ultrafiltration membrane (48).