Chemical Cleaning in Membrane Bioreactors: Implications for Accreditation in Water Recycling
نویسندگان
چکیده
In this study, a full-scale membrane bioreactor (MBR) was monitored over a period exceeding 6 months. Two common chemical cleaning modes, chemically enhanced backwash and clean in place, with sodium hypochlorite were monitored with respect to microorganism log removal value (LRV). Overall, impact to microorganism LRV for virus, bacteria and protozoa due to cleaning was negligible with respect to overall system variability. High permeate chlorine residual post chemically enhanced backwash was noted. The findings of this study will facilitate appropriate risk management for MBR systems used for water recycling.
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