I don't know about the condition of your industrial effluent but sewage is already anaerobic and already contains sulfate, and sulfide and sulfate reducing and methanogenic bacteria so I don't think there is much concern about bisulfite in that application.
Published by Joseph Cotruvo, President at Joseph Cotruvo & Associates, Water , Environment and Public Health
I don't know about the condition of your industrial effluent but sewage is already anaerobic and already contains sulfate, and sulfide and sulfate reducing and methanogenic bacteria so I don't think there is much concern about bisulfite in that application.