CAJ | 학술논문

通过模拟试验分析改进后堤岸缓冲带对磷素运移规律及其去除效应的影响.结果表明:①缓冲带土壤剖面全磷含量随土层深度的增加呈现下降趋势,0～50 cm土层为磷素富集层,占整个土层总磷量的约70%;②0～50 cm土层深度处磷素在不断地水平向运移过程中,其淋溶量较大,而75 cm深度以下土层淋溶下来的全磷含量极其微小.③改进的堤岸缓冲带对农田地表溶质渗漏去除效果稳定,均在80%以上,堤岸缓冲带运行对水中磷的去除最高达0.023mg/L,对地下水环境的污染风险极小.
통과모의시험분석개진후제안완충대대린소운이규률급기거제효응적영향.결과표명:①완충대토양부면전린함량수토층심도적증가정현하강추세,0～50 cm토층위린소부집층,점정개토층총린량적약70%;②0～50 cm토층심도처린소재불단지수평향운이과정중,기림용량교대,이75 cm심도이하토층림용하래적전린함량겁기미소.③개진적제안완충대대농전지표용질삼루거제효과은정,균재80%이상,제안완충대운행대수중린적거제최고체0.023mg/L,대지하수배경적오염풍험겁소.
The phosphorus transport and removal efficiency were analyzed on the basis of bank buffer strips model test in laboratory. The result indicated that: ① Attenuation of phosphorus in profile layers of improved bank buffer strips decreased slowly with deepen depth of soil, and it mainly happened in the 0～50cm depth soil layer, about reaching 70% of whole soil layers.②In 0-50era depth soil layer, the phosphorus had large amount of leaching,while in below 60cm depth soil layer had extremely small.③the improved bank buffer worked well in removal efficiency, all more than 80%, through operation of it, the discharged phosphorus concentration was only 0. 023 mg/L, slightly higher than critical value (0.02 mg/L) of water eutrophication, which is almost not effect on the groundwater environment.