Baloch M I, Akunna J C, Collier P J
Wessex Water, Bristol Wastewater Treatment Works, Kings Weston Lane, Avonmouth, Bristol, BS11 0YS, UK.
Bioresour Technol. 2007 Jul;98(9):1849-55. doi: 10.1016/j.biortech.2006.06.014. Epub 2006 Sep 1.
This study presents the performance characteristics of a plug flow phase separated anaerobic granular bed baffled reactor (GRABBR) fed with brewery wastewater at various operating conditions. The reactor achieved chemical oxygen demand (COD) removal of 93-96% with high methane production when operated at organic loading rates (OLRs) of 2.16-13.38kg COD m(-3)d(-1). The reactor configuration and microbial environment encouraged the acidogenic dominant zone to produce intermediate products suitable for degradation in the predominantly methanogenic zone. Noticeable phase separation between acidogenesis and methanogenesis mainly occurred at high OLR, involving a greater number of compartments to contribute to wastewater treatment. The highly active nature and good settling characteristics of methanogenic granular sludge offered high biomass retention and enhanced methanogenic activities within the system. The granular structure in the acidogenic dominant zone of the GRABBR was susceptible to disintegration and flotation. Methanogenic granular sludge was a multi-layered structure with Methanosaeta-like organisms dominant in the core.
本研究介绍了推流式相分离厌氧颗粒床折流板反应器（GRABBR）在不同运行条件下处理啤酒废水时的性能特征。该反应器在有机负荷率（OLR）为2.16 - 13.38kg COD m(-3)d(-1)运行时，化学需氧量（COD）去除率达到93 - 96%，同时甲烷产量较高。反应器的结构和微生物环境促使产酸主导区产生适合在主要产甲烷区降解的中间产物。产酸和产甲烷之间明显的相分离主要发生在高OLR时，涉及更多隔室以助力废水处理。产甲烷颗粒污泥的高活性和良好沉降特性使得系统内生物量得以高保留，并增强了产甲烷活性。GRABBR产酸主导区的颗粒结构易发生解体和上浮。产甲烷颗粒污泥是一种多层结构，核心部分以类甲烷八叠球菌属生物为主。
