Systematically testing alternative cleaning agents and cleaning procedures on a large scale municipal membrane bioreactor, the Erftverband optimized the cleaning strategies and refined the original cleaning procedures for the hollow fiber membranes in use. A time-consuming, intensive ex-situ membrane cleaning twice a year was initially the regular routine. By introducing the effective means of cleaning in place in use today, which employs several acidic and oxidative/alkaline cleaning steps, intensive membrane cleaning could be delayed for years. An overview and an assessment of various cleaning strategies for large scale plants are given.
Strategies for chemical cleaning in large scale membrane bioreactors
C. Brepols, K. Drensla, A. Janot, M. Trimborn, N. Engelhardt; Strategies for chemical cleaning in large scale membrane bioreactors. Water Sci Technol 1 February 2008; 57 (3): 457–463. doi: https://doi.org/10.2166/wst.2008.112
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