[WATER] Management and Control of Taste and Odour Problems associated with Geosmin and 2-MIB in Drinking Water Supplies

在这个学生博士项目中，我们的目标是了解韦塞克斯集水区饮用水水库中VOC产量(geosmin和2-MIB)增加的驱动因素。偶尔(尽管不总是)，Geosmin和2-MIB的间歇性暴发与Wessex水库的浮游蓝藻水华有关，但最近，底栖群落已被确定为VOCs的潜在和重要来源(Wessex Water，未发表的数据)。我们将集中于三个水库及其相关的集水区，分析这些挥发性有机物的分布、迁移和去向，以及它们对水处理过程的响应。具体目标是：i)从三个水库的底栖和中上层(以及直接集水区)分离潜在的产生VOC的微生物；ii)在一系列实验制度下检查地精和2-MIB产生的种内和种间差异；iii)确定VOCs溶解部分和颗粒部分之间的分隔程度；iv)确定导致VOCs渗出的条件，并利用分离的产生VOC的底栖和中上层微生物，特别侧重于病毒溶解、原生动物和甲壳类草食动物的作用(S)。

In this CASE Studentship PhD project we aim to understand the drivers of elevated VOC production (Geosmin and 2-MIB) in drinking water reservoirs within the Wessex Water catchment. Episodic outbreaks of Geosmin and 2-MIB have occasionally, though not always, been associated with planktonic cyanobacterial blooms in Wessex reservoirs, but more recently, benthic communities have been identified as potential and significant sources of the VOCs, (Wessex Water, unpublished data). Focussing on three reservoirs and their associated catchments, we will analyse the distribution, transport and fate of these VOCs and their response to water treatment processes. The specific aims are: i) to isolate potential VOC producing microorganisms from the benthic and pelagic regions of the three reservoirs (and from the immediate catchment); ii) to examine intra-and interspecific variability in Geosmin and 2-MIB production under a range of experimental regimes; iii) to determine the degree of compartmentalisation between dissolved and particulate fractions of VOCs; iv) identify conditions that lead to the exudation of VOCs with a specific focus on the role(s) of viral lysis, protozoan and crustacean grazers, using isolated benthic and pelagic VOC-producing microorganisms.