【摘要】 针对汇入洱海的支流低污染的水质情况,选择新型生物绳填料和挺水植物组成的折流式人工湿地去除水中低浓度氮磷。对照试验结果表明,种有水葱的装置A和无水葱的装置B构成的人工湿地系统对TN的平均去除率分别为48.3%和40.2%,对TP的平均去除率分别为65.8%和55.9%,对CODMn的平均去除率分别为75.2%和74.8%,系统对水体的整体处理效果理想,出水达到国家Ⅲ类水质标准。更多还原

【Abstract】 According to the water quality conditions of the slightly polluted anabranch,which flows into the Erhai,a new type of biological rope packing and water plants have been selected build up the folds flow constructed wetlands so as to remove nitrogen and phosphorus from slightly polluted water.The contrast results show that the average TN removing rate by using constructed wetland system A which has been planted with scirpus tabernaemontani,is 48.3% and by using constructed wetland system B which has not been planted with scirpus tabemaemontani,is 40.2%.The average TP removing rates of system A and B are 65.8% and 55.9%,respectively.The average CODMn removing rates of system A and B are 75.2% and 74.8%,respectively.The removing effects of the systems on water quality are satisfactory,reaching the 3rd class national standard.更多还原