Zooming in on Network Fouling Locations
Zooming in on Network Fouling Locations
复制标题
放大网络污垢位置
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
M. Blokker
中科院分区：
文献类型：
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作者：
P. Schaap;M. Blokker
PWN致力于尽可能少的水质投诉。人们对了解结垢机制并找到更长期的解决方案以减少棕色水投诉有浓厚的兴趣。因此，PWN记录了所有冲洗动作的浊度。本文用两种方法分析了30个历时18个月的低流量冲洗浊度数据集。首先，分析了整个管网的泥沙积累率，其次，研究了每根管道的局部积累物质。该假说认为，泥沙堆积的位置和数量可能与温度、分支和附属物的位置以及最大流速有关。结果表明，温度是影响研究区泥沙淤积的重要因素，随着水温的升高，泥沙淤积速率增大。分支在干线中的位置可能起作用，也可能不起作用。看起来更多的沉积物聚集在树枝周围（在树枝的前面和后面）。由于各分支机构相互之间距离较近，因此无法量化影响。在这个相对较小的研究区域中，无法确定最大流速的影响。
PWN strives for as few water quality complaints as possible. There is a strong interest in understanding the fouling mechanisms and finding a more long term solution to reduce the brown water complaints. Therefore PWN records the turbidity of all their flushing actions. In this paper 30 turbidity datasets of low flow flushing actions over a period of 18 months were analysed in two ways. First, the sediment accumulation rate of the total network was analysed and second, the locally accumulated material per pipe was studied. The hypothesis is that the location and amount of sediment accumulation may be related to temperature, the location of branches and appurtenances and the maximum flow velocity. The results show that temperature is an important factor for sediment build-up in the study area; accumulation rate increased with higher water temperature. The location of branches in mains may or may not play a role. It seems that more sediment is accumulated around the branches (in front as well as after the branches). The influence could not be quantified as the branches are relatively close to each other. The influence of maximum flow velocity could not be determined in this relatively small study area.