【摘要】 本论文研究了菩提子/美人蕉-黑麦草人工湿地生态工程在杭州气候条件下,净化流入西湖污水的效果,比较了不同季节、不同水力负荷条件下系统的净化效果及其间的差异.结果表明该湿地对总氮(TN)、化学需氧量(COD)、生化需氧量(BOD5)的总去除率在40%~50%之间,总磷(TP)的去除率在60%~70%之间,氨氮(NH4-N)的去除率达90%以上.春夏季的净化效果优于秋冬季,全年TN、TP、COD、BOD5的最低去除率分别保持在30%、60%、40%、35%左右.在同一时期不同的水力负荷(200~1200 mm/d)下系统净化效果无明显差异.更多还原

【Abstract】 In this paper,the purification efficiencies of constructed wetland system located in Hangzhou with effluent ultimately flowing into the West Lake were studied and the purification efficiency of this system under condition of different hydraulic loadings and at different seasons was examined.Results showed that: the total removal rates were 40%-50% for the total nitrogen（TN）,chemical oxygen demand（COD） and biochemical oxygen demand（BOD₅）,60%-70% for total phosphorus（TP） and above 90% for NH₄-N.Under condition of similar hydraulic loading,the purification efficiency of the system in Spring and Summer was higher than in Autumn and Winter,the minimum removal rates was maintained at 30% for TN,60% for TP,40% for COD and 35% for BOD₅.In the same season,under the different hydraulic loadings,ranging from 200 to 1200 mm/d,there was no remarkable variation in purification efficiency.更多还原