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...