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Technical features

Feat Reducing Process Aeration Fig 3B
Feature
04 May 2017

Reducing process aeration energy consumption in MBRs

MBRs use more energy compared with classical activated sludge (CAS) because the aeration requirements are greater. Aeration is needed both for the biological and membrane tanks for degrading the organics and scouring the membrane respectively.

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Feat Kunming Fig 3A
Feature
08 January 2017

Kunming Underground MBR: a Chinese case study

The below-ground installation at Kunming City is an example of one of the largest and most ambitious municipal wastewater MBRs in the world. At an average daily flow capacity of 150,000 m3/d and a peak daily flow of 195,000 m3/d, it is a substantial plant.

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Feat Mbr Opex Fig 3
Feature
30 September 2016

MBR OPEX − the theory of running costs

Operational costs in MBRs are marginally higher than those of conventional activated sludge (CAS) as permeating water through a membrane demands energy. For the immersed technologies (iMBRs), the overall specific aeration demand (SAD) is higher.

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Survey Results 2016 Fig 1
Feature
26 September 2016

The 2016 MBR Survey results

In 2015, we asked 'What’s the main issue with MBRs?' This time our question addresses the topic of sludge − most of your responses from the previous three surveys had been based around this topic so we felt it was worthy of further investigation.

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Feat Mechanical Shear Fig 1
Feature
18 July 2016

Mechanical shear in membrane bioreactors

In membrane separation systems, shear is probably the most significant parameter for driving the membrane process. Pressure is important but shear is arguably the property of the system which largely determines the rate of membrane fouling and so the flux.

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