A statistical approach to the optimisation of membrane operation
2006
Lodge, B.N. | Judd, S.J.
A bench-scale analysis has been conducted on the ultrafiltration of synthetic and real domestic wastewaters post-biotreatment by a biological aerated filter. This paper presents a rigorous analytical technique to identify the process parameters that have a significant influence on a membrane system performance. By applying statistical techniques, the influence of each parameter and the level of uncertainty were quantified within a highly complex, interrelated and variable process. The results showed that the fouling propensity for real greywater was significantly variable, both during the trial and from one trial to the next. The variability was primarily due to the inherent variability of greywater quality and the extent of settling within the storage facility. However, the fouling propensity for real greywater was generally lower than for settled sewage. The results of the analysis were extended to produce a predictive model that can be used as a guide in the design of membrane systems and their operation. The methodology is readily transferable and adaptable to other membrane systems.
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