竺山湖底泥疏浚对内源氮释放的控制作用研究  

Study on Role of Sediment Dredging in Zhushan Lake in Reducing Internal Nitrogen Release

作　　者：涂保华[1] 李有纯 雷春生[1] 董良飞[1] 张凤娥[1] 王利平[1] 

机构地区：[1]常州大学环境与安全工程学院,江苏常州213164 [2]江苏省成套设备有限公司,江苏南京210000

出　　处：《中国给水排水》2011年第21期86-88,共3页China Water & Wastewater

摘　　要：通过竺山湖底泥疏浚表层50 cm的模拟试验,得到疏浚与对照柱间隙水的NH4+-N浓度分别为(2.8～7.3)和(2.6～11.8)mg/L,沉积物-水界面的NH4+-N通量分别为(5.3～15.3)和(4.5～62.5)mg/(m2.d),可见疏浚间隙水的NH 4+-N浓度和沉积物-水界面的氨氮通量与未疏浚相比总体有所降低,这说明底泥疏浚对竺山湖内源氮释放具有较好的控制作用。In the simulation experiment of dredging the 50 cm layer of the sediment in Zhushan Lake, it is found that the NH4 ＋- N concentrations in the dredged and undredged sediment pore waters are in the range from 2.8 to 7.3 mg/L and 2.6 to 11.8 mg/L respectively, and the NH4＋ - N fluxes are in the range from 5.3 to 15.3 mg/（m2 · d） and 4.5 to 62.5 mg/（m2 · d） respectively. The concentration and flux of NH4＋ - N for the dredged sediment are generally lower than those for the undredged sediment. The results show that sediment dredging may be a useful approach for controlling internal nitrogen release in Zhushan Lake.

关 键 词：竺山湖 底泥疏浚 内源氮 

分 类 号：X524[环境科学与工程—环境工程]