第42卷第5期2023年10月·水环境·江门市新会区英洲海城区段黑臭水体污染特征研究陈树沛，谭光辉（江门市新会区环境监测站，广东江门529100）摘要：为切实做好黑臭水体治理，需全面掌握水体污染特征。依据2019～2020年间英洲海城区段黑臭水体监测数据，分析水质时空变化和黑臭水体程度，并采用相关性分析和主成分分析探讨监测指标间相互关系，找出主要污染物。结果表明，随着一系列整治工作的开展，2020年英洲海城区段各监测河段水质总体表现为优于2019年。监测指标中氧化还原电位、溶解氧、氨氮浓度与河道黑臭状况均有较高的相关关系；透明度、溶解氧、氧化还原电位与氨氮浓度呈显著负相关，溶解氧与氧化还原电位、透明度与溶解氧呈显著正相关；在黑臭水体评价中的作用依次为：氨氮>氧化还原电位>溶解氧>透明度。可知，周边生活污水、农业污水是导致黑臭水体形成的一个主要原因。后续黑臭治理需加强监管，降低水中氮营养盐浓度，利用生态修复措施实现英洲海城区段长治久清。关键词：新会区；英洲海；黑臭水体；污染特征中图分类号：X824InvestigationonPollutionCharacteristicsofBlack-odorousWaterinXinhuiUrbanSectionofYingzhouhaiRiverCHENShu-pei,TANGuang-hui(XinhuiEnvironmentalMonitoringStation,Jiangmen,Guangdong529100,China)Abstract:Inordertoeffectivelycontroltheblack-odorouswaterbodies,itisnecessarytograspthecharacteristicsofwaterpollutioncomprehensively.BasedonthemonitoringdataofUrbanSectionofYingzhouhairiverfrom2019to2020,thespatialandtemporalchangesofwaterqualityandthedegreeofblack-odorouswaterbodieswereanalyzed.Correlationanalysisandprincipalcomponentanalysiswereusedtoexploretherelationshipbetweenmonitoringindicatorsandfindoutthemainpollutants.Theresultsshowedthatwiththedevelopmentofaseriesofremediationwork,thewaterqualityofeachmonitoringsectionofYingzhouhairiverin2020wasbetterthanthatin2019.Theredoxpotential,dissolvedoxygenandammonianitrogenconcentrationinthemonitoringindicatorshaveahighcorelationwiththeblackandodorstatusoftheriver.Transparency,dissolvedoxygenandredoxpotentialweresignificantlynegativelycorrelatedwithammonianitrogenconcentration,anddissolvedoxygenwassignificantlypositivelycorrelatedwithredoxpotentialandtransparency.Therol...
