营口月亮湾砂质海岸整治修复工程近岸水环境效果评价

Evaluation of Nearshore Water Environment Effect of the Sandy Coast Renovation and Restoration Project in the Moon Bay of Yingkou

针对砂质海岸整治修复工程的近岸水环境效果评价问题,建立了基于海洋功能区划水质要求的砂质海岸整治修复工程近岸水环境效果评价方法,并以辽宁营口月亮湾砂质海岸整治修复工程为例进行了实证研究。结果表明:月亮湾海岸整治修复工程初步改善了海湾水环境质量,海湾环境中主要污染物变化各具特点:无机氮质量浓度由工程实施前所有站位点都不满足二类海水水质标准提升为16.67%站位点满足二类海水水质标准;重金属铜质量浓度由工程实施前85%站位点都满足二类海水水质标准提升为100%站位点满足二类海水水质标准;石油类质量浓度由工程实施前所有站位点都满足二类海水水质标准降低为80%站位点满足二类海水水质标准;无机氮质量浓度在月亮湾海岸整治修复工程实施前、后都是海水环境质量的“短板”。

For evaluating the nearshore water environment effect of the sandy coast renovation and restoration project,a evaluation method of nearshore water environment effect is developed based on the requirements for water quality in the marine function zoning,and the nearshore water environment effect is investigated by taking the sandy coast renovation and restoration project carried out in the Moon Bay of Yingkou as the study case.The results show that through this project the quality of the water environment in the Moon Bay has been initially improved,which can be seen from the variations of the standard rates of the major pollutants in the seawater environment before and after the implementation of the project.Before the project inorganic nitrogen in the seawater environment did not meet class II seawater quality standard at all of the surveying stations and after the project there are 16.67%of the stations where inorganic nitrogen has met the class II seawater quality standard.The surveying stations where heavy metal Cu in the seawater environment can reach class II seawater quality standard has increased from 85%of the stations before the project to 100%after the project.However,the surveying stations where oil in the seawater environment can meet the class II seawater quality standard have reduced from 100%before the project down to 80%after the project due to the construction and operation of the Xianrendao Island port area of the Yingkou Port.As for the inorganic nitrogen in the Moon Bay,its standard rate in the seawater environment has been a“short board”of the seawater environment quality before and after the project.