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Energy Efficient MBR Designs Can Significantly Reduce Operating Costs

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The MBR technology is an attractive, flexible solution for plant expansion/enhancement as well as for greenfield facilities. While capital costs of MBRs have become fairly competitive with conventional treatment systems, the operating costs, specifically energy requirements, require additional focus. In order to provide the most cost effective and energy efficient system, enhancements with design, operations, and equipment selection are required. There are several areas within the design of an MBR plant which provide the opportunity for a cost effective design which balances capital and operating costs. These include use of primary clarification, use of flow equalization, adjusting the balance of the solids between biological treatment and the membrane basins, and pump configuration. Key operational focus areas include membrane scour air operational strategies, use of flux enhancers, optimization of the number membranes in service, and biological operating conditions. Along with the operational strategies to reduce energy, energy efficient equipment must be selected.
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Keywords: MBR; aeration; design; energy; equipment; flux enhancers; operations

Document Type: Research Article

Publication date: 2010-01-01

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