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| 滇池流域典型城郊降雨径流污染特征与排放过程 | |
| 引用本文： | 张德刚,陈永川,汤利.滇池流域典型城郊降雨径流污染特征与排放过程[J].农业环境科学学报,2010,29(4). |
| 作者姓名： | 张德刚 陈永川 汤利 |
| 作者单位： | 1. 云南农业大学资源与环境学院,昆明,650201;红河学院生命科学与技术学院,云南,蒙自,661100 2. 云南农业大学资源与环境学院,昆明,650201;云南省热带作物科学研究所,云南景洪,666100 3. 云南农业大学资源与环境学院,昆明,650201 |
| 基金项目： | 国家高技术研究发展计划(863)项目(2005AA601010-02-5-03) |
| 摘 要： | 选择滇池流域典型城郊代表性的两个功能区——居民生活区和居民生活-集市混合区进行降雨径流监测,分析降雨径流污染特征及排放过程。结果表明,降雨地表径流中总氮浓度在2.18～29.40mg·L-1,总磷浓度在0.18～3.90mg·L-1,氨态氮浓度在0.87～18.48mg·L-1,硝态氮浓度在0.02～3.64mg·L-1,CODCr浓度在22.51～362.92mg·L-1,TSS浓度在7.00～882.00mg·L-1之间。降雨地表径流污染物浓度高于地表水Ⅴ类水环境质量标准。降雨径流中氮的主要污染物是氨态氮、颗粒态氮和溶解有机态氮,磷的主要污染物以颗粒态磷和PO34--P为主。降雨径流污染物浓度随降雨时间发生变化,开始产生径流时污染物浓度较高,之后随着雨强的平衡而趋于下降。降雨径流各污染物浓度是居民生活-集市混合区大于居民生活区,居民生活区径流大于屋面径流;次降雨径流污染物平均浓度(EMC)为居民生活-集市混合区普遍高于居民生活区。居民生活-集市混合区降雨径流EMC变化表现出更大的随机性。 |
| 关 键 词： | 降雨径流 污染特征 排放过程 滇池流域 城郊 |
Pollution Characteristics and Discharging Process in the Direct Runoff from Suburb Areas in Dianchi Lake Catchments |
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| ZHANG De-gang,CHEN Yong-chuan,TANG Li.Pollution Characteristics and Discharging Process in the Direct Runoff from Suburb Areas in Dianchi Lake Catchments[J].Journal of Agro-Environment Science( J. Agro-Environ. Sci.),2010,29(4). | |
| Authors: | ZHANG De-gang CHEN Yong-chuan TANG Li |
| Affiliation: | 1.College of Resources and Environmental Science/a>;Yunnan Agricultural University/a>;Kunming 650201/a>;China/a>;2.College of Life Sciences and Technology/a>;University of Honghe/a>;Mengzi 661100/a>;3.Yunnan Institute of Tropical Crop Science/a>;Jinghong 666100/a>;China |
| Abstract: | Direct runoff is recognized as one of the major causes of water quality deterioration in the receiving water bodies.Two typical suburb representative resident areas,a Residential area and a Residential-Commercial mixing area,around the Dianchi Lake were chosen to study the concentrations and discharging process of pollutants in the direct runoff.The results showed the total concentrations of major pollutants in the direct runoff in the two studied areas of Dianchi Lake catchment were:2.18～29.40 mg·L-1 for total N;0.18 ～3.90 mg·L-1 for totalP;0.87～18.48 mg·L-1 for NH3-N;0.02～3.64 mg·L-1 for NO3-N;and the chemical oxygen demand(CODo)and total suspended solids(TSS)were 22.51～362.92 mg·L-1 and 7.00～882.00 mg·L-1,respectively.The concentration of each pollutant in the direct runoff was well above the value of Class V in the surface water quality standard.The major nitrogen pollutants were NH3-N,particle-N and dissolved organic-N.The major phosphorus pollutants were particle-P and PO3-4-P.The pollutant concentration in the direct runoff of Residential-Commercial Area was higher than that of Residential Area,which was higher than that in roof runoff.The pollutant concentration in the direct runoff varied with time.Concentrations of pollutants at the beginning of the runoff were very high,and then decreased sharply with the time to the stable stage.The Event Mean Concentration(EMC)of the Residential-Commercial Area was higher than that of Residential Area,with greater randomness. |
| Keywords: | direct runoff pollution characteristics discharge process Dianchi lake catchments suburb |
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