The University of Queensland, Advanced Water Management Centre, Level 4 Gehrman Building 60, St Lucia, QLD, 4072, Australia.
Seqwater, 117 Brisbane Street, Ipswich, QLD, 4305, Australia.
Water Res. 2019 Feb 1;149:440-447. doi: 10.1016/j.watres.2018.11.034. Epub 2018 Nov 16.
Biodegradation is an effective method for the removal of taste and odour (T&O) compounds from drinking water sources. In this study, the applicability of a moving-bed biofilm reactor (MBBR) as biological treatment step for the control of MIB and geosmin was studied at pilot-scale. After a 3.5 month acclimation period both T&O compounds could be reliably removed by at least 80%. Biodegradation was found to be the dominant removal mechanism with air stripping contributing up to 25% at shorter HRTs. Also sorption of MIB and geosmin onto carriers and biofilm did occur, simultaneously facilitating the biodegradation process. The biodegradation of MIB and geosmin followed pseudo-first-order kinetics.
生物降解是去除饮用水源中异味化合物（T&O）的有效方法。在本研究中，采用移动床生物膜反应器（MBBR）作为生物处理步骤，在中试规模上对控制 MIB 和土臭素进行了研究。经过 3.5 个月的驯化期，两种异味化合物的去除率均可靠地达到了至少 80%。生物降解被发现是主要的去除机制，空气吹脱在较短的水力停留时间（HRT）下贡献高达 25%。此外，MIB 和土臭素也会同时被载体和生物膜吸附，从而促进生物降解过程。MIB 和土臭素的生物降解遵循拟一级动力学。
