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Technical features

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Responses to the survey Q1: In your experience, what are the main technical issues or limitations that prevent MBRs working as they should?
Feature
09 March 2015

The 2015 MBR Survey results

In February 2015, we asked you to contribute to our MBR survey with a view to sharing knowledge and experiences about the common technical issues that prevent MBRs working as they should, as well as your views about the future for MBR technology.

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Pilot plant
Feature
28 July 2014

Immersed anaerobic MBRs: are they viable?

Anaerobic MBRs provide the potential for removing COD with a net energy benefit from the methane generated, albeit without nutrient removal. To date, five independent reviews of the subject have been published in various learned journals in 2012 alone.

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Annual average effluent concentrations of the nine small plants
Feature
09 May 2014

Survey of Japanese municipal MBRs

In Japan, over 3,000 MBRs have been in operation since the 1980s for small-scale on-site industrial/household wastewater treatment. Municipal wastewater applications began in the mid 00’s, with 19 operational full-scale plants by April 2013.

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Average permeability recoveries and permeability increases after each chemical cleaning applied. It was not possible to calculate the permeability recovery for the declogging cleanings
Feature
13 January 2014

Ragging in immersed hollow fibre membrane bioreactors

It is widely recognised by practitioners that clogging phenomena – possibly related to inefficient pre-treatment – are at least as important as membrane surface fouling in MBR systems. It is also recognised that clogging takes different forms...

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Predicted change in viscosity with temperature, Equations 1−5
Feature
04 April 2012

Sludge viscosity − the thick of it

The non-Newtonian nature of sewage sludge means that its measured viscosity µs varies with shear rate due to the shear-dependent deformation of the flocculant solids. Viscosity affects the shear at the membrane interface ...

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Geographical split of 2012 survey respondents
Feature
04 January 2012

The 2012 MBR Survey – the results

In our 2012 MBR survey, we asked for the views of a range of MBR stakeholders regarding the perceived technical challenges facing MBRs: What is the main technical problem that prevents MBRs working as they should?

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