Water Environment Federation (WEF)

New Technologies Force Change from Traditional Design-Bid-Build Strategy

With the increasing demand for technologies which produce high-quality effluent for reuse and/or that have a small footprint suitable for upgrading of site-constrained facilities, several new technologies, e.g. membrane bioreactor (MBR), integrated fixed film activated sludge (IFAS), and moving bed bioreactor (MBBR), have rapidly advanced as reasonable solutions. There are multiple manufacturers for each of these new technologies and the equipment as well as the design and operating requirements vary significantly between the vendors. As a result, it is no longer cost effective or appropriate to allow equipment selection to occur as part of the overall project bid, rather pre-selection of the equipment is required to optimize/customize the design. There are a variety of pre-selection alternatives ranging from sole-source selections to complete life-cycle evaluations. The equipment pre-selection method should be tailored to project specific needs and client preference.

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