I'm assuming you can't build the biogas facility next to you WWTP, correct? Otherwise you would just be able to pipe it directly from the digester and bypass your cost to belt press and transport. But to answer your first question, NO it would not hurt the biomass simply because by the time is enters the system the chlorine would have either been used up or gassed off. THe demand of the sludge would be so great it would overcome any effect from a 0.25 mg/l concentration which is close to drinking water standards at the tap.
Published by John Foris, Certified DW and WW Operations
I'm assuming you can't build the biogas facility next to you WWTP, correct? Otherwise you would just be able to pipe it directly from the digester and bypass your cost to belt press and transport. But to answer your first question, NO it would not hurt the biomass simply because by the time is enters the system the chlorine would have either been used up or gassed off. THe demand of the sludge would be so great it would overcome any effect from a 0.25 mg/l concentration which is close to drinking water standards at the tap.