长江科学院院报
長江科學院院報
장강과학원원보
JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTITUTE
2015年
2期
20-23
,共4页
胡晓东%翁松干%李志清
鬍曉東%翁鬆榦%李誌清
호효동%옹송간%리지청
农用地%径流%污染%人工降雨%输出特征
農用地%徑流%汙染%人工降雨%輸齣特徵
농용지%경류%오염%인공강우%수출특정
farmland%runoff%pollution%artificial rainfall%output characteristic
选取常熟金泾塘地区典型农用地为研究对象,通过人工降雨研究不同降雨条件下径流污染物的输出特征,并分析径流污染对河水污染的贡献。结果表明:小强度降雨径流初期污染物输出浓度最大,而高强度降雨径流污染物输出最大浓度相对滞后;污染物 TN 和 CODMn输出总量远大于 TP 和氨氮,且污染物输出总量随雨强增大而增加,但并不呈线性增长关系;径流污染输出的 TN 和 TP 对金泾塘河水污染贡献较大。
選取常熟金涇塘地區典型農用地為研究對象,通過人工降雨研究不同降雨條件下徑流汙染物的輸齣特徵,併分析徑流汙染對河水汙染的貢獻。結果錶明:小彊度降雨徑流初期汙染物輸齣濃度最大,而高彊度降雨徑流汙染物輸齣最大濃度相對滯後;汙染物 TN 和 CODMn輸齣總量遠大于 TP 和氨氮,且汙染物輸齣總量隨雨彊增大而增加,但併不呈線性增長關繫;徑流汙染輸齣的 TN 和 TP 對金涇塘河水汙染貢獻較大。
선취상숙금경당지구전형농용지위연구대상,통과인공강우연구불동강우조건하경류오염물적수출특정,병분석경류오염대하수오염적공헌。결과표명:소강도강우경류초기오염물수출농도최대,이고강도강우경류오염물수출최대농도상대체후;오염물 TN 화 CODMn수출총량원대우 TP 화안담,차오염물수출총량수우강증대이증가,단병불정선성증장관계;경류오염수출적 TN 화 TP 대금경당하수오염공헌교대。
The output characteristics of pollutants in farmland runoff under different artificial rainfall intensity was researched at typical farmland in Changshu suburban area.The contribution of runoff pollution to the river pollution was also discussed.Result revealed that 1 )the maximum concentration of pollutant appeared at the beginning of the rainfall under small intensity,while emerged later under big rainfall intensity;2)the summation of TN and CODMn outputs were far larger than the output of TP and ammonia nitrogen,also the summation of pollutant in-creased with the increase of rainfall intensity but the change was nonlinear;3)TN and TP had a greater contribu-tion to the river contamination.