摘要：15N-labelled NH4+was used to study the denitrification mechanism of the zeolite vegetation concrete in the eutrophication water.The removal ratio of NH4+ was 99% by the zeolite vegetation concrete after incubation of 6 days.The experimental results showed that 14(±2)% of NH4+ was adsorbed by the zeolite,26(±5)% of NH4+ was transferred into the plants to form the organic nitrogen,35(±10)% of NH4+ was retained in the soil due to the adsorption and the absorption by the mineral and microorganism,and the left wasn’t detected.The plant paspalum notatum flugge exhibited a high NH4+ uptake rate of 14mg N kg/d-1.Our results suggested that zeolite vegetation concrete functioned effectively as a sink for NH4+ in treating eutrophication water.
关键词：Zeolite vegetation concrete;15N isotope tracing;NH4+ removal;Revetment material
