摘要
为解决寒冷地区人工湿地污染物去除效率低、冬季运行不稳定的问题,以新凯河支流永春河上游新建人工湿地为例,综合考虑气候、水量水质、场地情况等条件,采用“前端生态塘(无沉水植物)+氧化塘+潜表耦合湿地+末端生态塘(沉水植物为主)+近自然湿地”的组合工艺,将永春河来水引入湿地进行净化。该设计可解决冬季低温对人工湿地运行造成不利影响的问题,运行后预计对河道污染物化学需氧量(COD)、氨氮(NH3-N)、总磷(TP)的年去除量分别超过100.71 t、6.95 t、3.3 t,同时也能够发挥人工湿地水源涵养、微气候调节和生物多样恢复等作用。
In order to solve the problems of low pollutant removal efficiency and unstable operation in winter of constructed wetlands in cold areas,the newly built constructed wetlands in the upper reaches of Yongchun River,a tributary of Xinkai River,was taken as a case study.Various factors such as climate,water quantity and quality,and site conditions were comprehensively considered to introduce the water from Yongchun River into the wetland for purification.The combined process of"front-end ecological pond(no submerged plants)+oxidation pond+subsurface coupled wetland+end ecological pond(mainly submerged plants)+near natural wetland"was applied to overcome the adverse effects of low winter temperatures on the operation of constructed wetlands.After operation,the annual removal of chemical oxygen demand(COD),ammonia nitrogen(NH3-N)and total phosphorus(TP)of river pollutants was expected to exceed 100.71 t,6.95 t and 3.3 t,respectively.Moreover,this design can also serve as a means for water conservation,microclimate regulation and biodiversity restoration of constructed wetlands.
作者
周国旺
徐玲娥
卢烨彬
康雅茹
宋思远
ZHOU Guo-wang;XU Ling-e;LU Ye-bin;KANG Ya-ru;SONG Si-yuan(Powerchina Huadong Engineering Corporation Limited,Hangzhou 311122,Zhejiang,china)
出处
《湿地科学与管理》
2023年第4期59-63,共5页
Wetland Science & Management
关键词
人工湿地
工艺设计
水质净化
生物多样性恢复
Constructed wetland
Process design
Water purification
Biodiversity restoration
