Strategies for chemical cleaning in large scale membrane bioreactors.
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.
Brepols
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C
Erftverband, Paffendorfer Weg 42, 50126 Bergheim/Erft, Germany. info@erftverband.de
Drensla
K
K
Janot
A
A
Trimborn
M
M
Engelhardt
N
N
D000143:Acids / Q000737:chemistry; D019149:Bioreactors; D007287:Inorganic Chemicals / Q000737:chemistry*; D008567:Membranes, Artificial; D010084:Oxidation-Reduction; D013997:Time Factors
D000143:Acids; D007287:Inorganic Chemicals; D008567:Membranes, Artificial