【摘要】 凤眼莲对萘污水有很强的净化能力.在初始浓度为4.3、9.9、13.2mg/L的萘污水中,凤眼莲对其的净化率分别达到92.0%、85.4%、84.2%.放有凤眼莲的浓度为9.9mg/L的萘液试验缸中,第5天细菌浓度高达1.6×105个/mL,比空白对照中第5天的细菌浓度高约10倍,同时处理缸和对照缸中,凤眼莲对萘液的处理效果比空白对照高3.4倍.根系微生物在净化过程中起着非常重要的作用.采用GC MS,在用于净化萘污水的凤眼莲根、茎叶中未检测到萘.萘难以在凤眼莲体内富集.更多还原

【Abstract】 Eichhornia crassipes solms have high purification efficiency for naphthalene contaminated water. The result shows that in the naphthalene contaminated water in which initial concentration was 4.3, 9.9, 13.2 mg/L, and the removal rates were 92.0%, 85.4%, 84.2% respectively. In the naphthalene contaminated water （C₀=9.9 mg/L）, bacteria concentration was found to be 1.6×10⁵ /mL, which was ten times higher than in the reference specimen. Meanwhile the purification efficiency of eichhornia crassipes solms was 3.4 times higher than that in the reference specimen. The mic-（roorganism） system in the root of the hydrophyte plays an important role in the purification process. Naphthalene cannot be detected in the roots, stems and leaves of eichhornia crassipes solms by using GC-MS. It is difficult for naphthalene to accumulate in hydrophyte.更多还原