화학공학소재연구정보센터
Journal of Chemical Technology and Biotechnology, Vol.85, No.10, 1334-1339, 2010
Application of A/O-MBR for treatment of digestate from anaerobic digestion of cow manure
BACKGROUND: Anaerobic digestion (AD) is widely used as an animal manure bioconversion technology. However, the effluent obtained from the digester during the wet-AD process requires to be treated carefully before discharge if AD technology is to be developed as an effective and environmentally advantageous animal manure treatment. RESULTS: An anoxic/aerobic-membrane bioreactor(A/O-MBR) system has been developed for digestate treatment in an AD system treating cow manure. The performance of the A/O-MBR system in terms of removal of nitrogen, COD and phosphorus were investigated. Results indicated that the average removal efficiencies of NH4-N+, COD and PO43--P were 98.1%, 96.3% and 76.6%, respectively. The fouled membrane from the A/O-MBR system was cleaned effectively using NaOH and a 30h soak time. CONCLUSION: This study suggests that it is technically feasible to use the A/O-MBR for the treatment of digestate from a cow manure AD system, and can provide an environmentally acceptable way for the application of wet-AD in animal manure treatment. (C) 2010 Society of Chemical Industry