When working with a high volume of organic wastewaters with TS concentration around 5-7%TS, such as cheese whey, digesters volume are very high when working with typical CSTR or plug flow digesters. Considering the homogeneous nature of these type of substrates and their properties (easy flow, no separation of phases...), I wonder if reactors such as UASB or others where there is a mechanism to differentiate solid and liquid retention time can help in reducing significantly digester volume without affecting biogas production and organic matter removal.
Check https://www.researchgate.net/publication/260950072_Biogas_production_from_cheese_whey_wastewater_Laboratory-_and_full-scale_studies
Also check https://www.ajol.info/index.php/njb/article/view/106823/96739
Dear Juan-Luis Ramos-Suarez,
Based on my worldwide expertise since 1977 in development, realization and operation of full-scale high-rate anaerobic digestion (HRAD) plants converting various medium-high strength agro-industrial wastewaters to biomethane at up to 99% efficiency, the answer to your question is YES on the condition that one minimizes the load of suspended solids (TSS) in the reactor feed and/or that one retains the ACTIVE biosludge in the reactor instead of just ALL solids such as in (an)MBR's. Over 80% of our HRAD reactors are (advanced) UASB/EGSB's.
Thank you very much for your answers Mr. Chinaza and Mr. Peeters.
Mr Peeters could you please share some more info on these case studies? Here you can find my email: [email protected] . Thanks in advance,
Yes it does and also depends on the technology where I always suggest if the waste has less than 4-5% Total solid content then always one should select UASB or modified version of UASB
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