石洞口邻近海域环境状况及监测建议

Environmental Status of and Monitoring Proposal for the Sea Area Adjacent to Shidongkou

石洞口城镇污水处理厂为上海市大型城镇污水处理厂之一,其邻近海域为本市重点监测区域。根据2012-2014年监测资料,对石洞口邻近海域水质状况进行了分析,并对沉积物质量状况进行了总结。结果表明,受无机氮、活性磷酸盐、阴离子表面活性剂等因子影响,石洞口邻近海域水质劣于第四类海水水质标准,沉积物符合第二类海洋沉积物标准。结合主要入海河流污染物通量分析,推断石洞口邻近海域水体的水质主要取决于该海域地表径流的大量输入。

The municipal sewage treatment plant of Shidongkou is one of the largest sewage treatment facilities in Shanghai,and great attention to monitoring its adjacent sea area has been paid by Shanghai Municipal Ocean Bureau.According to the data obtained in the period 2012～2014,water quality in this area was analysed,and sediment quality was summarised as well.It turned out that the water quality was inferior to Class 4 of Sea Water Quality Standard owing to higher contents of inorganic nitrogen,active phosphate and anionic surfactants.The sediment quality was compliant with Class 2 of Marine Sediment Standard.Combined with an analysis on pollutant fluxes of main rivers flowing into the sea,it could be deduced that water quality in the sea area adjacent to Shidongkou was mainly dependent upon the massive input of pollutants from land-based runoff.