摘要
根据2021年威海西北部污水排海口附近海域水质监测结果,对海水水质现状进行了评价;结合2007年调查水质监测结果和2017—2021年连续监测数据,分析了污水排放前后和近年附近海域海水水质的变化趋势;采用Mike 3三维潮流和污染物扩散耦合模型,预测了污水排放量增加(提量)、污染物排放标准提高(提标)后排放污水中COD、无机氮、活性磷酸盐对海洋环境的影响范围和程度。结果表明:研究区海水水质较2007年略有下降,但排水口处及外侧海域大部分站位符合海水水质二类标准,海水水质状况相对较好,威海污水处理厂多年污水离岸深水达标排放对区域海洋环境的影响较小。污水处理厂提量、提标改造后,特征因子中仅无机氮扩散范围略超原污水排放混合区用海范围,不会对研究区水质环境造成明显影响。
According to the results near the Weihai sewage outfall in 2021,the current situation of seawater quality was evaluated.Combined with the water quality monitoring results in 2007 and the continuous monitoring data from 2017 to 2021,the change trend of seawater quality before and after sewage discharge and in recent years were analyzed.Mike 3 model was used to predict the impact range and degree of COD,inorganic nitrogen and active phosphate on the marine environment after the increase of sewage discharge and the improvement of pollutant discharge standard.The results show that the seawater quality in the study area was slightly lower than that in 2007,but most stations met the class II standard of seawater quality.The seawater quality was relatively good.Weihai sewage treatment plant had a small impact on the regional marine environment due to the standard discharge of sewage in offshore deep water for many years.After the upgrading of the sewage treatment plant,only the diffusion range of inorganic nitrogen slightly exceeded the original mixed region.So the upgrading will not have a significant impact on the water quality environment of the study area.
作者
蔡德泉
冷星
胡红智
姜来想
高光
刘爱江
张晓东
CAI Dequan;LENG Xing;HU Hongzhi;JIANG Laixiang;GAO Guang;LIU Aijiang;ZHANG Xiaodong(Weihai Marine Development Research Institute,Weihai 264200,China;Ocean University of China,Qingdao 266100,China;Weihai Marine and Fishery Monitoring and Disaster Reduction Center,Weihai 264200,China;Qingdao Jiahe Environmental Engineering Company,Qingdao 266100,China)
出处
《海洋湖沼通报》
CSCD
北大核心
2023年第1期146-155,共10页
Transactions of Oceanology and Limnology
基金
山东省自然科学基金项目(ZR2019MD037)。
作者简介
第一作者:蔡德泉(1965-),男,高级工程师,研究方向为海洋管理与环境保护。E-mail:caidequan-2008@163.com;通信作者:冷星(1993-),女,硕士研究生,研究方向为海洋地质。E-mail.lengxing1993@qq.com.
