摘要
采用组合式人工湿地对污水厂尾水进行水质提升,具体工艺包括:预处理塘、曝气好氧塘、廊道式植物拦截墙及多级表流湿地,其中表流湿地植物以沉水植物为主。该组合式湿地占地面积约446666.7 m^(2),处理规模为42000 m^(3)/d。组合式湿地系统稳定运行1 a,出水COD、NH_(3)-N、TP最高浓度分别为29.8、1.25、0.196 mg/L,均低于GB 3838—2002《地表水环境质量标准》Ⅳ类水标准。湿地出水回用量约200万m^(3)/a,节约了水资源。
The hybrid-constructed wetland(HCW)was used to improve the water quality of the effluents from the wastewater treatment plant.The HCW consisted of a pre-treatment pond,aerated aerobic pond,corridor-type aquatic plants interception walls,and multi-surface flow constructed wetlands.In particular,the aquatic plants in the surface flow constructed wetlands were mainly composed of submerged plants.The HCW covers an area of approximately 446666.7 m^(2) and has a treatment capacity of 42000 m^(3)/d.The actual one-year operations’results showed that the water qualities of COD,NH_(3)-N,and TP were stable below 29.8 mg/L,1.25 mg/L,and 0.196 mg/L,respectively,all of which were lower than the classⅣstandard of“Environmental quality standards for surfact water(GB 3838—2002)”.The reuse quantity of the effluent from HCW reached 200×10^(4) m^(3)/a,which greatly saved the water resources.
作者
孙祥
何尚卫
SUN Xiang;HE Shangwei(Kesheng Environment Protection Technology Co.,Ltd.,Nanjing 211500,China;School of Wetland,Yancheng Teachers University,Yancheng 224007,China;Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection,Yancheng 224007,China)
出处
《供水技术》
2025年第4期39-43,共5页
Water Technology
关键词
人工湿地
污水厂
尾水
水质提升
回用
hybrid-constructed wetland
wastewater treatment plant
effluents
water quality improvement
reuse
