CAJ | 학술논문

以新乡市城区屋面作为汇水区域，开展试验对雨水管网中场次降雨径流水文水质过程进行研究，可为有效利用城市雨水、控制非点源污染等提供依据。水质指标包括SS、COD和TN。结果表明：水质指标中SS、COD变化趋势基本一致，随着降雨过程的持续浓度逐渐降低并趋于一个稳定值；TN随着雨量的累积浓度逐渐降低，但在降雨结束前有反弹趋势；指标标准差率呈SS＞COD＞TN的趋势；径流初期屋面冲刷效应明显，初期径流量可定义为前1～3mm的降雨量；径流中SS与COD、TN之间的相关性较好，在控制径流污染时可采取措施同时去除；径流污染物直接通过城区排水管网汇入受纳水体后对其水质影响较大，尤以SS、COD的变化最为明显。
이신향시성구옥면작위회수구역，개전시험대우수관망중장차강우경류수문수질과정진행연구，가위유효이용성시우수、공제비점원오염등제공의거。수질지표포괄SS、COD화TN。결과표명：수질지표중SS、COD변화추세기본일치，수착강우과정적지속농도축점강저병추우일개은정치；TN수착우량적루적농도축점강저，단재강우결속전유반탄추세；지표표준차솔정SS＞COD＞TN적추세；경류초기옥면충쇄효응명현，초기경류량가정의위전1～3mm적강우량；경류중SS여COD、TN지간적상관성교호，재공제경류오염시가채취조시동시거제；경류오염물직접통과성구배수관망회입수납수체후대기수질영향교대，우이SS、COD적변화최위명현。
Taking urban roof as the catchment area in Xinxiang City, the paper researched the hydrology and water quality process of each rainfall event so as to provide the basis for effective use of urban rainfall and control of non-point source pollution.The samples includes the contents of SS, COD and TN.The results show that the variation trend of pollutant index SS, COD in runoff is similar and tends to a steady value.the contents gradually decrease and reach a stable value with the duration of rainfall.With the ac-cumulation of rainfall, the change amplitude of TN gradually reduce, but which has a rebound and in-crease tendency before the end of rain.The standard deviation rate of water quality indicator is in the or-der of SS>COD>TN.The first flush of roof runoff is clear, and the initial runoff amount is equivalent to former 1~3mm rainfall.The correlation between SS and COD, TN in runoff is good.It shows that the similar measures can be taken to remove them in controlling the runoff pollution.That the runoff pollu-tants flow into the receiving water body directly through urban drainage pipes has an important effect on its quality.The change of SS and COD is obvious.