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Alternative Approaches to Bacterial Reduction for WwTW Discharges: Phase 1, Desk Study

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Price: £100  

This project studies a range of wastewater disinfection technologies in a search for a low carbon method for achieving bacterial reduction in discharges to Shellfish and Bathing Waters. It concludes that there are no alternative technologies currently available which could dramatically reduce the carbon footprint associated with disinfection.
This study shows that optimsed low pressure UV systems can provide one of the lowest carbon solutions. An evaluation of operational data provided from existing UV irradiation systems highlighted that there is significant potential to reduce power demand and associated operational carbon emissions in this area.
There is a wide variation in the way disinfection consents are set across the UK. Additionally, bacteriological data indicated that conventional wastewater treatment processes can produce effluents that are, on average, better than the guidance defaults for faecal coliforms. This could potentially provide the opportunity to reduce the onus on the downstream disinfection plant.
The importance of understanding the relationships between dose, log10 reduction, transmissivity and power was emphasised, in order to optimise the performance of UV disinfection systems while minimising carbon emissions. The report recommends field trials to test a methodology and protocol that might be used to establish an effective low carbon approach to disinfection.

 

 

UKWIR Reference :- 12/WW/17/12Published Date :- 14/11/2012
Retail Price (£) :- 100ISBN :- 1 84057 640 5

 

Supporting Material and Reports

 Alternative Approaches to Bacterial Reduction for WwTW Discharges: Phase 1, Desk Study CD