Cordier Clemence, Eljaddi Tarik, Ibouroihim Nadjim, Stavrakakis Christophe, Sauvade Patrick, Coelho Franz, Moulin Philippe
Aix Marseille Univ, CNRS, Centrale Marseille, M2P2-EPM (UMR 7340), 13545 Aix en Provence, France.
Plateforme Expérimentale Mollusques Marins, Station Ifremer de Bouin, Polder des Champs, 85230 Bouin, France.
Membranes (Basel). 2020 Apr 22;10(4):78. doi: 10.3390/membranes10040078.
The main objective of this paper is to study the effect of new air backwash on dead-end ultrafiltration of seawater with a pilot at semi-industrial scale (20 m/day). To control membrane fouling, two different backwashes were used to clean the membrane: classical backwash (CB) and new air backwash (AB) that consists of injecting air into the membrane module before a classical backwash. To evaluate the efficiency of AB and CB, a resistance in series model was used to calculate each resistance: membrane (R), reversible (R) and irreversible (R). The variation of the seawater quality was considered by integrating the turbidity variation versus time. The results indicate clearly that AB was more performant than CB and frequency of AB/CB cycles was important to control membrane fouling. In this study, frequencies of 1/5 and 1/3 appear more efficient than 1/7 and 1/9. In addition, the operation conditions (flux and time of filtration) had an important role in maintaining membrane performance-whatever the variation of the seawater quality.
本文的主要目的是在半工业规模（20立方米/天）下，通过中试研究新型气水反冲洗对海水终端过滤的影响。为了控制膜污染，使用了两种不同的反冲洗方式来清洗膜：传统反冲洗（CB）和新型气水反冲洗（AB），后者是在传统反冲洗之前向膜组件中注入空气。为了评估AB和CB的效率，采用串联阻力模型来计算各阻力：膜阻力（R）、可逆阻力（R）和不可逆阻力（R）。通过整合浊度随时间的变化来考虑海水水质的变化。结果清楚地表明，AB比CB更有效，且AB/CB循环频率对于控制膜污染很重要。在本研究中，1/5和1/3的频率似乎比1/7和1/9更有效。此外，无论海水水质如何变化，操作条件（通量和过滤时间）在维持膜性能方面都起着重要作用。
