西北水电Issue(6)：18-24,7.DOI:10.3969/j.issn.1006-2610.2023.06.004
巢湖圩区农田面源污染负荷估算及治理措施研究
Research on the estimation of non-point source pollution load and treatment measures of farmland in Chaohu polder area
摘要
Abstract
Non-point source pollution of farmland is one of the main pollutions in Chaohu Lake Basin.Taking the 10,000 mu of Yangliu polder area in the Chaohu Lake basin as the study object,the river inflow coefficient method is used to estimate and analyze the pollution load in the pol-der area.The results show that in2020 the total COD of the pollution load in the polder is175.24 t/a,NH3-N is24.99 t/a,TP is3.24 t/a,and TN is 38.49 t/a,of which the non-point source pollution load of farmland is 50.59 t/a,NH3-N of 10.91 t/a,TP of 1.02 t/a,and TN of 19.83 t/a,accounting for 28.91%、43.66%、31.48%and 51.52%of the total river inflow,respectively.In addition to the low utilization rate of chemi-cal fertilizers and pesticides in the polder area,poor hydrodynamic conditions of water flow in the ditches,integrated irrigation and drainage sys-tem,and imbalance of aquatic plant communities are also important factors causing non-point source pollution.Meanwhile,due to the lack of purification and storage space in the polder area,a large amount of pollution is pumped to the outer river with rainwater during the flood season,which has a serious impact on the surrounding water quality.In view of this,reasonable treatment plans and measures are put forward according to local conditions,which can provide a reference for the design of farmland non-point source pollution control projects in the plain polder area.关键词
巢湖流域/典型圩区/农田面源/污染估算/典型措施Key words
Chaohu Lake Basin/typical polder areas/farmland non-point source/pollution estimation/typical measures分类
环境科学引用本文复制引用
高珍,赵嘉静,强敏敏..巢湖圩区农田面源污染负荷估算及治理措施研究[J].西北水电,2023,(6):18-24,7.基金项目
陕西省自然科学基础研究计划(2023-JC-QN-0356). （2023-JC-QN-0356）
