SoE2020: Volume and load of sewage treatment plants

The annual volume and load of nutrients released from coastal sewage treatment plants into waterways in Queensland has been collected since 2010. In general, we have observed that the loads of nutrients, particularly nitrogen, are correlated with the annual volume. However, loads of nutrients in some locations have reduced in recent years despite high annual volumes and were attributed to improved treatment in these locations.

本研究自2010年起，已收集昆士兰州沿海污水处理厂向水体排放的营养物质年排放量与负荷量数据。整体观测表明，营养物质负荷（尤其是氮负荷）与年排放量呈显著相关关系。但近年来部分区域尽管年排放量仍处于较高水平，其营养物质负荷却有所下降，该现象归因于当地污水处理工艺的优化升级。