MBR-4: Optimisation of operational costs in a full-scale MBR

The first full-scale MBR on domestic wastewater in the Benelux, with an average capacity of 230 m3/h, has been commissioned two years ago at Schilde (Belgium). Applying a rather new technology, there is still little known about operational cost optimisation. The fellow's first task will be to compile a detailed overview of all factors contributing to operational costs at WWTP Schilde. Based on data from practical experiences with operating MBRs within Aquafin as well as on literature data, it should be outlined where there is further room for operational optimisation, without neglecting the filtration stability and effluent results.

This can be tested empirically with a 1,5 m3/h pilot plant operated in parallel with the full-scale plant and treating the same influent. Depending on these findings, a test program will be developed describing the implementation of operational measures on the full-scale MBR. The effect of these measures on operational costs, filtration stability and effluent results will be evaluated and used to update the applied 'code of good operational practice'. The final outcome will describe the potential to decrease operational costs without affecting effluent quality or membrane filtration stability.

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