利用生态池净化玉泉景点富营养化水的研究

Studies on the Treating of Eutrophic Water in Jade Spring by Ecological Pool

在人工湿地的基础上建立生态池,来净化杭州植物园玉泉观鱼景点观鱼池富营养化水质。结果表明该生态池在每年的不同季度内对总氮(TN)、氨氮(NH3-N)、总磷(TP)、化学需氧量(CODMn)、五日生化需氧量(BOD5)、溶解氧(DO)、浊度(TURB)、电导率(COND)均有较好的改善和净化效果,对硝态氮(NO3-N)的净化能力稍弱;总氮和氨氮的去除率在夏季最高,分别达到26.6%和87.7%,总磷在春季的去除率最高,为56.3%,硝态氮、CODMn和BOD5在秋季去除率最高,分别为8.05%、65.9%和73.9%。生态池的净化出水水质略低于地下水,但可以替代地下水来给养鱼池换水,为解决景区富营养化水质提供了一个好的途径。

Ecological pool was constructed to treat the eutrophic water in fishpond in Hangzhou Botanical Garden, and the difference of TN, NH3-N, NO3-N, TP, CODMn, BOD5, DO, TURB, COND were analysis. The result showed the removal rates of TN and NH3-N were higher in summer and reached respectively 26.6% and 87.7%, the removal rate of TP was higher in spring and reached 56.3 %, the removal rates of NO3- N, CODMn and BOD5 were higher in autumn and reached 8.05 %, 65.9 % and 73.9 % respectively.The water quality was no notable difference between the effluent of ecological pool and groundwater, so the eutrophic water in fishpond can be exchanged by the effluent of ecological pool instead of groundwater.