Features - Feasibility, optimisation and costs

Foaming in MBRs: measurement and evaluation

Foaming of conventional activated sludge (CAS) is very common. It may happen during start-up due to the presence of surfactants, with insufficient biomass to degrade them during the early stages. However, this is normally a short-term issue. These foams (from surfactant foaming) are mostly white and can be countered with anti-foamants until there are sufficient biomass developed to degrade them.

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Process biology | Feasibility, optimisation and costs

How much does an MBR cost? The relative cost of an MBR vs an SBR

Operational experience at La Center WWTP in Washington, USA indicates that the cost of MBR technology may be lower than that of a conventional biological treatment process, despite the higher energy demand. La Center is a small city in Clark County, Washington, USA, with a population of 3,100. The wastewater treatment works at the town was originally constructed in 1967

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Feasibility, optimisation and costs | Alternative membrane technologies and applications

Immersed anaerobic MBRs: are they viable?

There has been a recent surge of interest in anaerobic MBRs. The technology provides the potential for removing COD with a net energy benefit from the methane generated, albeit without nutrient removal. Interest within academia is evidenced by the publication of five independent reviews of the subject in various learned journals in 2012 alone.

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Feasibility, optimisation and costs | Water quality and treatability | Alternative membrane technologies and applications

Commissioning of large WWTP with flat sheet MBR technology: The Arenales del Sol case

The Arenales del Sol WWTP in Spain combines biological treatment with nutrient removal with a submerged MBR system fitted with flat sheet (FS) ultrafiltration membranes, with an average treatment capacity of 10,000 m3/d (10 MLD). The plant provides high quality treatment to highly variable seasonal sewage inflow due to the nature of this popular coastal region.

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Feasibility, optimisation and costs | Pre-treatment and post-treatment