| 引用本文: | 白献宇,胡小贞,庞燕.洱海流域低污染水类型、污染负荷及分布.湖泊科学,2015,27(2):200-207. DOI:10.18307/2015.0202 |
| BAI Xianyu,HU Xiaozhen,PANG Yan.Pollution load, distribution and characteristics of low-polluted water in Lake Erhai watershed. J. Lake Sci.2015,27(2):200-207. DOI:10.18307/2015.0202 |
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| 摘要: |
| 为科学、合理地评估湖泊流域低污染水的类型及其污染负荷,以洱海流域为例,系统研究低污染水的概念及类型,确定了低污染水调查方法,并分析了洱海流域低污染水的来源、类型、产生量、污染物量和分布特征.结果表明,洱海流域低污染水主要包括污水处理厂处理尾水、城镇地表径流、农田排水(含村落地表径流)3种主要类型,产生量为20069×104m3/a.由低污染水带来的总氮(TN)负荷为1393t/a,总磷(TP)负荷为77t/a.从空间分布上看,洱海流域西部和北部片区低污染水TN、TP负荷比例最大,分别达到88%和87%,因此应主要针对西部和北部片区特点制定洱海流域低污染水控制措施. |
| 关键词: 洱海流域 低污染水类型 低污染水产生量 低污染水污染物量 空间分布特征 |
| DOI：10.18307/2015.0202 |
| 分类号: |
| 基金项目:国家水体污染控制与治理科技重大专项(2012ZX07105-003,2012ZX07105-002)资助. |
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| Pollution load, distribution and characteristics of low-polluted water in Lake Erhai watershed |
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BAI Xianyu, HU Xiaozhen, PANG Yan
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Chinese Research Academy of Environmental Sciences, Beijing 100012, P. R. China
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| Abstract: |
| IIn order to evaluate low-polluted water and its categories, this paper took Lake Erhai as a sample to systematically explore the concept, types and survey method of low-polluted water and to determine its pattern in source, discharge, pollution load and distribution. Results of this study revealed that the annual discharge of low-polluted water in the catchment is 20069×104 m3/a, which mainly comes from three different sources:agricultural runoff, urban surface runoff and discharge from water treatment plant. Low-polluted water brings in 1393 ton total nitrogen (TN) and 77 ton total phosphorus (TP) annually. As for spatial distribution, the west and north part of Lake Erhai contain most TN and TP content, in percentages of 88% and 87%, respectively. Therefore, water control action should be carried out according to the characteristics of west and north part of Lake Erhai. |
| Key words: Lake Erhai watershed low-polluted water type low-polluted water output low-polluted water pollution load spatial distribution characteristics |
