Low energy MBR systems - implication for New Zealand wastewater design
Annual Conference
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The high quality product water produced by Membrane Bioreactor (MBR) systems has lead to it being increasingly adopted as a technology of choice in wastewater treatment and water reuse. For MBR systems, energy requirements are of primary interest; in particular aeration energy as it is the largest consumer of energy in the membrane treatment stage of the process.
Recent developments in low energy consumption for MBR design have further enhanced the technology as a relevant stand alone treatment. One development of note is the MemPulse system which has reduced air scour by 60% and total membrane system energy usage by up to 50%. This advance in reduced air consumption, coupled with the market trend for reduced capital costs, continues to increase the viability of MBR on a whole of life cost analysis. This paper reviews the design of MemPulse and operating plants with particular relevance to the NZ market.