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March 2015 - Portugal WWTP AD plant increase biogas output by 20% Case Study
Courtesy of Citadel Environmental Solutions (CES)
A BioCat+ system was installed at Espinho, Portugal, the site is a waste water treatment facility with an AD plant, processing domestic sewage. Citadel Environmental Solutions technology, BioCat+™ has recently been installed at a Waste water treatment plant in Portugal. The AD plant technology is a bespoke design cosisting of 2 x digestors of 2668 M3 in parallel with 2x400kw CHP's. The feedstock is domestic sewage with a solid content of 4.6% and a daily loading of 97.84 tons per day.
Details
BioCat+ was applied from September 2013 till March 2014. then stopped for a major plant upgrade and restarted in December 2014. During the application period an increase in biogas output of up to 20% was measured, the output since restarting has exceeded all previous records and continues to be highly efficient. Please see graphs on the following page indicating before and after BioCat+ aoDlication for September 13 to March 14 period.
Other benefits found by applying BioCat+™ technology are:
- Major reduction in H2S
- Reduction in additives
- Increased plant stability
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