水资源与水工程学报
水資源與水工程學報
수자원여수공정학보
JOURNAL OF WATER RESOURCES AND WATER ENGINEERING
2014年
6期
132-136
,共5页
水质评价%富营养化%时间特征%源解析%于桥水库
水質評價%富營養化%時間特徵%源解析%于橋水庫
수질평개%부영양화%시간특정%원해석%우교수고
water quality assessment%eutrophication%temporal characteristics%source analysis%Yuqiao Reservoir
基于2000－2010年水质数据和降水资料，应用层次聚类分析、后退式判别分析和正定矩阵因子分解模型，系统地分析了于桥水库富营养化的时间特征及其潜在污染源。结果表明：于桥水库富营养化主要表现为氮超标，磷为限制因子，时间上可划分为2个时段———时段Ⅰ（7－9月）和时段Ⅱ（4－6月、10－11月），对降水存在水质响应延迟现象。其中，时段Ⅰ水体中SS、CODMn、CODCr、BOD5、TP明显高于时段Ⅱ，DO、TN、NO3-N明显低于时段Ⅱ， NH3-N在两个时段相差不大。揭示了时段Ⅰ水体富营养化比时段Ⅱ严重，流域内面源污染对富营养化的影响高于点源污染。正定矩阵因子分解模型解析得到影响于桥水库富营养化的污染源可能有6类，分别是农业面源磷排放、含氮工业废水、库底沉积物、农业面源氮排放、村落生活污水和有机工业废水。
基于2000－2010年水質數據和降水資料，應用層次聚類分析、後退式判彆分析和正定矩陣因子分解模型，繫統地分析瞭于橋水庫富營養化的時間特徵及其潛在汙染源。結果錶明：于橋水庫富營養化主要錶現為氮超標，燐為限製因子，時間上可劃分為2箇時段———時段Ⅰ（7－9月）和時段Ⅱ（4－6月、10－11月），對降水存在水質響應延遲現象。其中，時段Ⅰ水體中SS、CODMn、CODCr、BOD5、TP明顯高于時段Ⅱ，DO、TN、NO3-N明顯低于時段Ⅱ， NH3-N在兩箇時段相差不大。揭示瞭時段Ⅰ水體富營養化比時段Ⅱ嚴重，流域內麵源汙染對富營養化的影響高于點源汙染。正定矩陣因子分解模型解析得到影響于橋水庫富營養化的汙染源可能有6類，分彆是農業麵源燐排放、含氮工業廢水、庫底沉積物、農業麵源氮排放、村落生活汙水和有機工業廢水。
기우2000－2010년수질수거화강수자료，응용층차취류분석、후퇴식판별분석화정정구진인자분해모형，계통지분석료우교수고부영양화적시간특정급기잠재오염원。결과표명：우교수고부영양화주요표현위담초표，린위한제인자，시간상가화분위2개시단———시단Ⅰ（7－9월）화시단Ⅱ（4－6월、10－11월），대강수존재수질향응연지현상。기중，시단Ⅰ수체중SS、CODMn、CODCr、BOD5、TP명현고우시단Ⅱ，DO、TN、NO3-N명현저우시단Ⅱ， NH3-N재량개시단상차불대。게시료시단Ⅰ수체부영양화비시단Ⅱ엄중，류역내면원오염대부영양화적영향고우점원오염。정정구진인자분해모형해석득도영향우교수고부영양화적오염원가능유6류，분별시농업면원린배방、함담공업폐수、고저침적물、농업면원담배방、촌락생활오수화유궤공업폐수。
Based on the records of water quality and precipitation data from 2000 to 2010 ,the paper used hierarchical cluster analysis , backward discriminant analysis and positive matrix factorization model ( PMF) to systematically assess the temporal characteristics of eutrophication and the potential pollution sources in Yuqiao Reservoir .The results indicated that the key exceeded standard factor of eutrophication is N, and the limit factor is P.At temporal scale, eutrophication of water bodies can be divided into peri-od I ( from July to September ) and periodⅡ( from April to June , October to November ) , and there is a delay for the response of water quality to precipitation .Moreover, the concentrations of SS , CODMn , CODCr , BOD5 and TP in period I are much higher than that in period Ⅱ, and the concentrations of DO , TN and NO3-N in period I are much lower than that in period Ⅱ, while NH3-N in both periods is similar . These findings revealed that eutrophication in period I is more serious than that in period Ⅱ, and the in-fluence of non-point source pollution on eutrophication is higher than that of point source pollution .The results of PMF identified six possible pollution sources of eutrophication in Yuqiao Reservoir such as agri -cultural non-point source phosphorus pollution , nitrogen industrial wastewater , reservoir sediment , agri-cultural non-point source nitrogen pollution , village sewage , and organic industrial wastewater .
