Evaluation of a novel flat sheet MBR filtration system

被引：10

作者：

Grelot, A. ^{[1
]}

Tazi-Pain, A. ^{[1
]}

Weinrich, L. ^{[2
]}

Lesjean, B. ^{[3
]}

Grasmick, A. ^{[4
]}

机构：

[1] Res Ctr Veolia Water, Anjou Rech, Maisons Laffitte, France

[2] A3 Water Solut, Gelsenkirchen, Germany

[3] Berlin Ctr Competence Water, D-10709 Berlin, Germany

[4] Univ Montpellier 2, Lab Proc Engn, Montpellier, France

来源：

DESALINATION | 2009年 / 236卷 / 1-3期

关键词：

Double-deck; Cleaning; Flat sheet membrane; Membrane bioreactor;

D O I：

10.1016/j.desal.2007.10.057

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The objective of the study was to optimize the hydraulic operating conditions and the cleaning strategy of a novel flat sheet MBR filtration system developed by A3 water solutions. Four areas were focused on in particular: the optimization of the filtration operating conditions; the impact of peak flows oil the membrane performances; the impact of a double-deck configuration and the testing of chemical cleaning products as alternatives to chlorine. The A3 water Solutions technology was operated for 11 months under typical biological operating conditions (MLSS = 9 gSS/L; SRT = 28.6 days) for MBR systems. The optimum net flux of 26.4 L/h m(2) at 20 degrees C gave a stable permeability around 500-600 L/h m(2) bar at 20 degrees C with filtration/relaxation cycles of 8 min/2 min and an air flow rate of 0.34 Nm(3)/h m(2). The optimization of the cleaning strategy enabled to operate with a net flux of 25.5 L/h m(2) at 20 degrees C at a lower membrane air flow rate of 0.21 Nm(3)/h m(2) and to recover the permeability after some bio-fouling. Regular peak flows did not affect the membrane performances. The double-deck configuration did not influence the fouling characteristics of each module.

引用

页码：111 / 119

页数：9

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