摘要
文章以昆明市主要排污河道之一的大清河入滇池的小流域为研究对象,针对小流域范围内城郊型面源污染状况,通过详细的问卷调查和实地采样分析,初步得出研究区污染物产生的来源、产生特点和发生量。结果表明:生活污水排放、地表径流产污、农田排水是该研究区氮、磷污染物排放的三大来源;其中,总氮排放量有54.7%来源于生活污水,25.9%来源于农田化肥流失;总磷排放量有61.5%来源于生活污水,24.8%来源于地表径流。滇池周边地区面源污染物来源和特征有别于滇池全流域的各污染类型比值,面源污水已成为城郊区面源污染物的主要来源,是控制之要点。因地制宜,就地处理城郊型的农村生活污水,科学平衡施肥,降低地表径流排污浓度,是城郊型滨湖带小流域面源污染治理成功的关键。
Current status of suburb non-point source pollution in the area of Daqinghe River,which is main pollutant discharge river of Kunming was studied. Based on survey and analysis of water and soil samples of the area,source,characteristics and discharge load of main pollutant occurred in the area were obtained. Results indicated that sewage emission,surface runoff and farmland fertilizers drainage are main source of nitrogen and phosphorus pollutant discharge,in which 54.7% total nitrogen discharge from sewage,...
出处
《环境科学与技术》
CAS
CSCD
北大核心
2010年第9期19-30,共12页
Environmental Science & Technology
基金
国家863计划"城郊面源污水综合控制技术研究与工程示范"(2005AA601010-02)
关键词
城郊型面源污染
污染源
污染排放通量
地表水质
suburban non-point source pollution
source of pollution
pollution emission flux
surface water quality