Biogas reactor: does it have an effluent or not?

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Biogas reactor: does it have an effluent or not?

Dear all
This is a question that has been popping up in my work again and again:

Does a biogas reactor have an effluent or not?


The Factsheet on this Technology Compendium of Eawag says no, because, depending on the design, the effluent quantity can be very low.
However, when you look at the picture provided with it: you clearly see an outlet...
When generating different sanitation system options from the technologies, this question becomes very relevant because if I need to consider this effluent, the number of possible options of system configuration is significantly increased (i.e. multiplied by the number of options available to treat this effluent).

Please share your opinions / gut feelings / best guesses!

Cheers, Dorothee
WG1 Co-lead
Developing methods and tools to support strategic planning for sustainable sanitation. Particular interested in novel technologies contributing to more inclusive and circular sanitation. This email address is being protected from spambots. You need JavaScript enabled to view it.

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