Section of Environmental Engineering, Aalborg University, Sohngaardsholmsvej 57, 9000 Aalborg, Denmark.
Water Sci Technol. 2011;64(2):348-54. doi: 10.2166/wst.2011.717.
The collection system of a major city at the Persian Gulf was simulated for bulk water hydrogen sulfide and the release of sewer gas to the urban atmosphere. Geometry data on 870 km of sanitary sewer and data on dry weather flow entering all nodes in the catchment was exported from a Mike Urban database and imported to the sewer process model WATS. The process model then routed sewage and sewer gas through the system and simulated relevant physical, chemical and biological processes. In its non-calibrated state, the model was used as a planning tool to identify problem areas and to identify locations to install monitoring equipment and make preliminary choices for control strategies in terms of dosing of nitrate and iron salts. The monitoring equipment consisted of flow meters, level gauges, UV-Vis spectroscopes, and H2S gas sensors. Data from the first set of installed monitoring equipment were applied to calibrate and validate the model. It was illustrated how the calibrated model can be applied to assess compliance with quantitative formulated service levels and to design control strategies in terms of dosing of iron and nitrate salts.
对波斯湾一个主要城市的集水系统进行了模拟，以研究大量水硫化氢和污水气体排放到城市大气中的情况。从 Mike Urban 数据库导出了 870 公里卫生下水道的几何数据以及所有汇水区进入所有节点的旱季流量数据，并将其导入下水道处理模型 WATS。该过程模型通过系统输送污水和污水气体，并模拟相关的物理、化学和生物过程。在未经校准的状态下，该模型可用作规划工具，以确定问题区域，并确定安装监测设备的位置，并初步选择硝酸盐和铁盐投加的控制策略。监测设备包括流量计、液位计、紫外可见分光光度计和 H2S 气体传感器。第一批安装的监测设备所获得的数据用于校准和验证模型。说明了如何应用校准后的模型来评估符合定量制定的服务水平，并设计铁盐和硝酸盐盐投加的控制策略。
