可渗透反应墙材料对农田退水中氮、磷和PPCPs的截留作用
发布时间：2019-05-30 07:29
【摘要】：农业面源污染是河流湖泊污染的主要来源,农田退水中含有的大量氮、磷以及药品与个人护理用品(PPCPs)等新型有机污染物造成湖泊、河流污染。本研究通过饱和土柱实验,研究零价铁和生物炭两种可渗透反应墙材料对模拟农田退水中的氮、磷和PPCPs(卡马西平、布洛芬、双酚A)的截留效果。结果表明:在1 m L·min~(-1)流速,p H=7,磷初始浓度为11.73 mg·L~(-1)的条件下,生物炭对磷不存在截留作用,而零价铁对磷的截留量为88.7mg·kg~(-1);同样条件,卡马西平、布洛芬、双酚A初始浓度为5 mg·L~(-1),生物炭对这3种污染物的截留量分别为328.0、99.8、385.4 mg·kg~(-1),分别是零价铁截留量的57.5、66.5和83.8倍。不同可渗透反应墙材料对不同污染物的截留效果不同,在处理实际农田退水时,应考虑多种材料的选择和组合。
[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，
本文编号：2488639
[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，
本文编号：2488639
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