Water and Wastewater Mixing
Open Day and Exhibition

A full list of the presentations given at the WWM Open Day and Exhibition in October 2011, is available for download here:

Keynote speech
Mr Steve Bungay (Helix Environmental Consultancy Ltd)
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Water and Wastewater Mixing: Lighting-up a Dark Art
Dr Mick Dawson (BHR Group)
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Accurate Prediction and Validation of Sludge System Losses
Mr Phivos Ioannou (BHR Group)
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Floc-Strength Scale-Up: A Practical Approach
Dr Mick Dawson (BHR Group)
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Quantifying the Financial Benefits of Efficient Sludge Handling and Digester Operation
Mr Paul Lavender (AquaEnviro)
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The Art of Mixing, Anaerobic Digesters: Latest Development in Software Tools
Dr Hara Papachristou (BHR Group)
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Low Energy Mixing in Wastewater Applications
Mr Neil Cathie (Chemineer)
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Static  Mixers: A Story of Continuous Development
Mr Phillip Page (Statiflo)
Download

Research and Development in the Water Sector and then What?
Dr Ian Bernard (British Water)
Download

WWM8
Mr Emile Thomas (BHR Group)
Download


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WWM: Industrial Consortium

The generation of increased quantities of wastewater and sludge has led to significant ongoing capital expenditure on new and refurbished WWT plant and sludge treatment facilities in AMPs 4 and 5.  Particular attention has been paid to biological N and P removal, chemical P removal, storm water treatment and sludge processing. These operations require a quantified knowledge of the specific process mixing and hydraulic requirements, well-designed and efficient mixing systems and where applicable, accurate information on sludge flow behaviour or rheology.

The WWM Industrial Consortium Programme is run to address this. 

Consortium Benefits

• Days of free consultancy
• Excellent networking opportunities
• Access to over 30 staff-years of focused research
• Design Guides, tools and correlations

The Research Programme

Current research topics include:

• Sludge Rheology Database (SRDB) enabling correlations for prediction of sludge flow behaviour to be developed for sludge types (such as potable and hydrolysed) for which no prediction could be done before
• Sludge System Pumping Losses Prediction Tool (SLOT) provides members with easy to use calculation of sludge pipeline headlosses incorporating the latest rheology from the SRDB.
• Energy saving in flash mixing and flocculation through benchmarking of mixing and flocculation processes.
• Design guide for sludge tank & advanced anaerobic digester systems enabling members to select the most efficient equipment within the process, site and cost constraints.
• Successful development and site trials for non-intrusive mixing system for P-removal.

Previous research, which is accessible to all new members, has included:

• Design Guide for pipe and channel mixing
• Correlations to predict mixture quality in both pipes and channels
• Mixture quality (CoV)and headloss in static mixers in pipes and channels
• Mixture quality and headloss over weirs
• Stirred tank flash mixers (CSTRs)
• In-line dosing of additives into sludge
• The effect of additive viscosity on blending rates

Case studies

WWM Mixing and Dosing in Potable Water. Download case study 
The Water and Wastewater Mixing Programme (WWM). Download case study

If you are interested in joining WWM or would like more information, please contact Emile Thomas on +44(0)1234 756567