【摘要】 分别研究了室内和露天条件下在鹅卵石上着生的刚毛藻Cladophora oligoclona对富营养化湖水中氮(N)和磷(P)的净化效果及其对水华藻类生长的抑制能力,同时对处理后湖水的藻类生长潜力进行了测试.结果显示,刚毛藻在原始浓度总氮(TN)10.512 mg/L和总磷(TP)0.856 mg/L的富营养化湖水中能维持正常的生长代谢,并能有效去除水体中的N、P养分.在室内12 d培养期间,刚毛藻对TN、氨氮(NH4-N)、TP和无机磷(PO4-P)的平均去除率分别达53.13%,44.40%,35.71%和30.53%.在室外6 d培养期间,刚毛藻对TN、NH4-N、TP和PO4-P的日均减少量分别为1.643 5±0.413 9,1.350 3±0.352 4,0.113 7±0.041 1,0.074 2±0.033 0 mg/L,总去除率分别高达93.81%,94.62%,79.67%和77.66%.刚毛藻对水华微囊藻生长的抑制率达99.63%,处理后湖水的藻类生长潜力较原湖水下降了40.17%.据此认为,刚毛藻在净化污染水体、修复受损湖泊及防治水体富营养化等方面具有潜在的应用前景.更多还原

【Abstract】 The removal efficiency of nitrogen and phosphorus in eutrophic lake water by attached Cladophora oligoclona has been investigated at the conditions in laboratory and outdoor,respectively.The results showed that attached Cladophora oligoclona grew quite well and had high removal rates of N and P in the eutrophic lake water at the concentrations of TN 10.512 mg/L,NH4-N 8.563 mg/L,TP 0.856 mg /L and PO4-P 0.573 mg/L.The average removal rates of TN,NH4-N,TP and PO4-P from the eutrophic lake water by C.oligoclona were 53.13%,44.40%,35.71% and 30.53% in a 12-day culture at laboratory conditions.The total removal rates of the four parameter were 93.81%,94.62%,79.67% and 77.66%,with a daily reducation of TN 1.643 5±0.413 9 mg/L,NH4-N 1.350 3±0.352 4 mg/L,TP 0.113 7±0.041 1 mg/L and PO4-P 0.074 2±0.033 0 mg/L,by the algae in a 6-day culture under outdoor conditions.The growth of Microcystis flos-aquae could be torestrain by Cladophora oligoclona,the limited rate was reached to 99.63% in a 6-day culture in laboratory.The algae growth potential of the treated eutrophic lake water was reduced 40.17% of the original lake water.The results showed that attached Cladophora oligoclona was suitable for treating the wastewater with high concentrations of phosphorus and nitrogen.更多还原