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Bumper issue! IFAS-MBRs | MBR ragging | MABRs − ten research papers | MBR energy reduction | Defining MABRs, MBBRs and MBRs |SludgeProcessing.com | HAPPY CHRISTMAS!
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— FEATURE —
The integrated fixed-film activated sludge membrane bioreactor (IFAS-MBR): comparison with a regular MBR for nutrient removal
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The IFAS-MBR process is less well explored than the MBBR-MBR configuration − but what is the performance of the IFAS-MBR when challenged with a variable influent C/N ratio? This is important because it affects both nutrient removal and the emission of N2O – a highly active greenhouse gas (GHG).
→ View feature
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– ABSTRACTS –
MABRs − ten research papers
Our list of MABR abstracts includes studies of the removal of specific recalcitrant pollutants such as tetracycline, nitroaniline and melamine, plus sulphide removal from AD-treated wastewaters; enhancement with bio-carriers; nitritation, and a composite membrane-based process.
There’s also a modelling/simulation study and integration into a UCT process. Plus a review, published in 2020, which seems pretty comprehensive.
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– BLOG –
Defining MABRs, MBBRs and MBRs − terms and terminology
Terms which suggest that technologies are similar or related can be confusing and misleading. This is the case with the MABR, MBBR and MBR technologies. Let’s face it, the acronyms do kind of suggest that they are related. But they are actually quite different. Simon Judd summarises the definitions of 'MABR', 'MBBR' and 'MBR' in a handy at-a-glance table in his latest blog.
Defining MABRs, MBBRs and MBRs − terms and terminology
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— FEATURE —
Energy reduction at a large-scale MBR: the Nordkanal experience
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Christoph Brepols et al highlight the impact of on-site installation of an anaerobic digestion (AD) process on the key parameters of energy consumption and greenhouse gas emissions. The MBR at Kaarst-Nordkanal is one of 36 municipal WwTWs operated under the authority of the Erftverband, a regional river water association located in the German federal state of North-Rhine Westphalia.
→ Energy reduction at a large-scale MBR: the Nordkanal experience
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– NEWS –
Announcing SludgeProcessing.com
We are pleased to announce the launch of our new website SludgeProcessing.com, a technical information source for sludge treatment and the end disposal of waste sludge solids. We tackle the basics of sludge processing through to anaerobic digestion, thickening, dewatering & drying, sludge stabilisation and thermochemical processes.
As a sister site to The MBR Site, the plan is to offer technical features for experienced practitioners, as well as directory listings for companies active in this area.
Take a look!
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– EXPLAINER –
Sludge thermochemical treatment
There are two chemical states by which the solids content of sludge can be reduced thermochemically: oxidative and non-oxidative.
As such, the thermochemical process types are analogous to the biochemical digestion methods for solids destruction which take place in the presence (aerobic digestion) or absence (anaerobic digestion) of air. Read our Introduction to thermochemical methods...
View explainer
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Ragging in MBRs − how do rags form?
Rags may form in both flat sheet and hollow fibre immersed MBRs, but little is known of the factors contributing to their formation (their 'ragging propensity'). It has been suggested that the rags are formed by cotton products, and cotton wool specifically.
A simple test has been developed at Qatar University to assess the ragging propensity of sample textile materials − cotton wool, an MBR rag sample and lint.
View feature
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Happy Christmas from The MBR Site ...
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We'd just like to take this opportunity to wish you and your family a very happy and safe festive season. Thanks to all our friends from across the world for all your support and friendship again in 2020. What a year it's been.
A special thank you also to our advertisers, without whose support we would not be able to continue our work.
Here's hoping for a safer 2021 − as we in the UK also finally find out what this disaster of a Brexit means.
So, Merry Christmas, and all the best to you and your families,
Claire and Simon Judd
PS. This Christmas, we will be making a donation to our chosen charity instead of sending cards − this year, we have chosen lendwithcare.org, a charity which supports entrepreneurs in low income countries.
→ Visit the LendwithCare website
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With thanks to our advertisers:
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