CAJ | 학술논문

鉴于研究城区路面径流水质特征与初期径流量可为有效利用城市雨水、控制城市非点源污染等提供参考依据，采用污染物分析法对新乡市2010年城区路面3场降雨径流的水文水质过程进行采样分析，水质指标包括 pH 值、SS、COD 和 DO。结果表明：径流初期污染严重，主要污染物 COD、SS 变化趋势基本一致，随着降雨过程的持续含量逐渐降低，趋于一个稳定值；各指标标准差率呈 SS ＞COD ＞DO ＞pH值的趋势，这与各自浓度变化过程的指向性一致；径流中 COD、SS 之间的相关性较好，DO 与其之间的相关性较差；场次降雨路面初期径流量可取为前8 mm ～10 mm 的降雨量或前25 min ～30 min 的径流量。
감우연구성구로면경류수질특정여초기경류량가위유효이용성시우수、공제성시비점원오염등제공삼고의거，채용오염물분석법대신향시2010년성구로면3장강우경류적수문수질과정진행채양분석，수질지표포괄 pH 치、SS、COD 화 DO。결과표명：경류초기오염엄중，주요오염물 COD、SS 변화추세기본일치，수착강우과정적지속함량축점강저，추우일개은정치；각지표표준차솔정 SS ＞COD ＞DO ＞pH치적추세，저여각자농도변화과정적지향성일치；경류중 COD、SS 지간적상관성교호，DO 여기지간적상관성교차；장차강우로면초기경류량가취위전8 mm ～10 mm 적강우량혹전25 min ～30 min 적경류량。
Researching on the variation characteristics of pollutants and initial runoff amount of urban road runoff can pro-vide bases for effectively using the urban rainfall and controlling the non-point source pollution,etc.The hydrology and water quality processes of 3 rainfall events on the urban road of Xinxiang City in 2010 were sampled and analyzed by us-ing the pollutant analysis method.The examples were taken to analyze the contents of pH,SS,COD and DO.The results show that the runoff water quality is bad at the beginning,as the duration of rainfall,the variation trend of main pollutant index COD and SS in runoff is similar and tends to a steady value.The standard deviation rate of water quality indicators is in the order of SS >COD >DO >pH,which is consistent with the directivity of these indicators’concentration varia-tion .The correlation between COD and SS is good in runoff,but that is small between DO and these pollutants.The ini-tial runoff amount on the road of event rainfall is equivalent to the former 8 mm ~10 mm rainfall or former 25 min ~30 min runoff.