發(fā)布時間：2019-05-30 07:29

【摘要】：農業(yè)面源污染是河流湖泊污染的主要來源,農田退水中含有的大量氮、磷以及藥品與個人護理用品(PPCPs)等新型有機污染物造成湖泊、河流污染。本研究通過飽和土柱實驗,研究零價鐵和生物炭兩種可滲透反應墻材料對模擬農田退水中的氮、磷和PPCPs(卡馬西平、布洛芬、雙酚A)的截留效果。結果表明:在1 m L·min~(-1)流速,p H=7,磷初始濃度為11.73 mg·L~(-1)的條件下,生物炭對磷不存在截留作用,而零價鐵對磷的截留量為88.7mg·kg~(-1);同樣條件,卡馬西平、布洛芬、雙酚A初始濃度為5 mg·L~(-1),生物炭對這3種污染物的截留量分別為328.0、99.8、385.4 mg·kg~(-1),分別是零價鐵截留量的57.5、66.5和83.8倍。不同可滲透反應墻材料對不同污染物的截留效果不同,在處理實際農田退水時,應考慮多種材料的選擇和組合。
[Abstract]:Agricultural non-point source pollution is the main source of river and lake pollution. A large number of nitrogen, phosphorus, medicine and personal care products such as (PPCPs) and other new organic pollutants in farmland backwater cause lake and river pollution. In this study, the interception effects of zero valence iron and biocarbon permeable reaction wall materials on nitrogen, phosphorus and PPCPs (carbamazepine, ibuprofen, bisphenol A) in simulated farmland were studied by saturated soil column experiment. The results showed that there was no interception of phosphorus by biochar at the flow rate of 1 mL 路min ~ (- 1), pH 鈮，

本文編號：2488639