烟台套子湾污水处理厂扩建后邻近海域水质预测

THE pREDICTION OF WATER QUALITY ON ADJACENT SEA AREA AFTER EXPANSION WORK OF SEWAGE PLANT IN TAOZI BAY,YANTAI

以龙洞咀至养马岛邻近海域二维潮流模型为基础,建立污染物输运模型。预测烟台套子湾污水处理厂二期工程建成后对附近水域水质的影响,并进行环境风险事故影响预测。结果表明。正常运行时.污染物的超二类水域全部位于混合区内部,对附近海域环境影响不大,事故时无机氮和活性磷酸盐的排放会对该海域造成一定的污染,效应对污水处理厂加强管理.采取一定的防范措施.防止风险事故的发生。

A two dimension tidal current numerical model was constructed, and the calculation field was the adjacent sea area from Longdongzui to Yangmadao. Based on the established model, the mass transport model was built and then the impact in water quality of the adjacent sea area was simulated after sewage plant of Taozi Bay project were finished. And the prediction of environmental risk was also taken. The predictive results show that the area of exceeding the second standard was in the dilution zone and it has little effect on adjacent sea area when the plant was under normal running. But during accidents, the area might be contaminated because of discharging inorganic nitrogen and active phosphate. So the management should be intensified and the measures should be taken previously in order to avoid the accident.