摘要
为将现状出水标准为一级A的城市污水处理厂出水提标,使其主要指标达到GB3838—2002《地表水环境质量标准》Ⅲ类标准,主体工艺采用垂直潜流湿地—氧化塘—垂直潜流湿地相串联的组合工艺。CODCr的降解采取加深潜流湿地深度、增加氧化塘中生物载体、增加回流比等强化措施,NH_(3)—N的降解采取增加火山岩填料、增加曝气等强化措施,通过上述措施确保出水水质达到相应标准。人工湿地配水、积水采用穿孔管,填料采用级配砾石混合火山岩,种植植物选用芦苇、香蒲、菖蒲以及少量黄莺尾、千屈菜、美人蕉,并设置了超越、回流及曝气等设施,将人工湿地及氧化塘组合工艺赋予工程景观设计,建成集水质净化、环境美化及水生态文明于一体的生态处理系统。在采取针对性措施后,垂直潜流湿地-氧化塘-垂直潜流湿地相串联的组合工艺可用于城市污水处理厂的深度处理,效果良好。
The main indicators of the effluent from urban sewage treatment plant are raised from Grade A to the standard of Class Ⅲ of Environmental Quality Standards for Surface Water(GB3838-2002).The main treatment is made by adopting the combined technology of vertical subsurface flow wetland-oxidation pond-vertical subsurface flow wetland.For the degradation of CODCr,the measures of deepening the subsurface wetland and increasing biocarriers in oxidation pond and reflux ratio are applied;in terms of the degradation of NH_(3)—N,the methods of adding volcanic stuffing and increasing aeration are adopted;through the above measures,the quality of effluent meets the related standards.The perforated pipe is adopted for water distribution and accumulation in the constructed wetland,and graded volcanic rock is used as filler.The plants are reed,cattail,calamus,a small amount of yellow warbler,celandine,and canna in wetland.The facilities of refluxing and aeration are set up.The landscape design is made by adopting the characteristics of wetland and oxidation pond,and a wetland system integrating water quality purification,environmental beautification and water ecological civilization is built.With targeted measures,the combined technology of vertical subsurface wetland-oxidation pond-vertical subsurface wetland can be used by municipal sewage treatment plants for effective advanced treatment.
作者
郭治东
陈冠宇
赵世勋
GUO Zhidong;CHEN Guanyu;ZHAO Shixun(China Railway Engineering Design and Consulting Group Co.,Ltd,Beijing 100055,China)
出处
《铁道标准设计》
北大核心
2021年第4期155-159,共5页
Railway Standard Design
关键词
污水处理
深度处理
垂直潜流湿地
氧化塘
景观设计
水生态文明
wastewater treatment
advanced treatment
vertical flow constructed wetland
oxidation pond
landscape design
water ecological civilization
作者简介
郭治东(1982-),男,高级工程师,2007年毕业于兰州交通大学市政工程专业,工学硕士,主要从事给排水设计研究工作,E-mail:guozhidong82@163.com。
