论文部分内容阅读
分析了徒骇河、德惠新河与马颊河2003~2010年入海断面水质变化状况及入海通量的变化趋势。结果表明:徒骇河与德惠新河主要超标污染物为CODCr、CODMn、BOD5、NH3-N、石油类,主要表现为耗氧类有机污染与有机有毒类污染。马颊河主要超标污染物除CODCr、CODMn、BOD5、NH3-N、石油类外,还包括TP与VHB,以上各水质指标浓度分别超过III类水质标准的9、7、12、6、7、9、13倍,表现为耗氧类有机污染、营养盐类污染及有机有毒类污染问题。3条河流中,马颊河污染最为严重。研究期间,除德惠新河的无机无毒类与有机有毒类分类综合污染指数呈一定的上升趋势外,其它类别分类综合污染指数均呈下降趋势,表明3条河流的污染程度有所缓解。徒骇河TN、TP的入海通量总体上呈下降的趋势,其他两条河流污染物的入海通量均有所增加,至2010年,3条河流CODCr、CODMn、NH3-N、TN、TP及石油类入海通量分别为73 871、12 963、1 025、26、69、162t,16 075、2 997、365、304、13、31t及51 571、10 801、1 738、626、934、140t;且3条河流主要污染物入海通量的贡献顺序为徒骇河>马颊河>德惠新河。
The changes of the water quality of the sections of the Tuhai, Dehui, and Majia rivers that entered the sea from 2003 to 2010 and the trends of flux into the sea were analyzed. The results show that the major pollutants that exceed the standards of Tuhahe River and Dehui River are CODCr, CODMn, BOD5, NH3-N and petroleum. The main pollutants are oxygen-consuming organic pollutants and organic toxic pollutants. In addition to CODCr, CODMn, BOD5, NH3-N and petroleum, the main pollutants in Majia River also include TP and VHB. The concentrations of the above water quality indicators exceed the water quality standards of Category III, Grade 9, 9, 13 times, showing oxygen-consuming organic pollution, nutrient pollution and organic toxic pollution problems. Among the 3 rivers, the Majia River is the most polluted. During the study period, except for Dehui New River, the comprehensive pollution index of inorganic non-toxic and organic toxic categories showed a certain upward trend, the comprehensive pollution index of other categories showed a downward trend, indicating that the pollution degree of the three rivers was eased. The fluxes of TN and TP into Tricky River generally showed a downward trend, and the flux of other two river pollutants increased into the sea. By 2010, the CODCr, CODMn, NH3-N, TN, TP And petroleum into the sea were 73 871,12 963,1 025,26,69,162t, 16 075,2 997,365,304,13,31t and 51 571,10 801,1 738,626,934 respectively, 140t. The order of contribution of the three rivers’ major pollutants to the sea flux is Tuhai River> Majiahe River> Dehui River.