宁夏引黄灌区农田退水污染现状分析

Analyzed on Present Situation of Subsiding Water from Cropland in Ningxia Irrigation Area from the Huanghe River

通过对宁夏引黄灌区农田退水污染、农业生产污染源头和污染负荷结构的现状分析,结果表明,化肥与规模养殖是灌区水体TN和TP的主要污染源,工业废水和城市生活污水对水体质量仍然具有重要影响,农村生活废弃物对灌区水质的目前影响不明显。

The paper analyzed the pollution of subsiding water from land, the pollution headstream of agricultural production and the structure of pollution load in Ningxia irrigation area. The results are that the fertilizers and scale breeding are the pollution headstream of TN and TP, and that the industrial waste water and urban sanitary wastewater had the important effect to the water quality, and the suburban domestic waster did not produce obvious effect to the water quality in irrigation area.