串联水平潜流人工湿地处理城区污水厂尾水研究  

Study on the Treatment of Tail Water From Urban Sewage Plants using Tandem Horizontal Subsurface Flow Constructed Wetlands

作　　者：廉颇 邹舒宇 刘玉兵 LIAN Po;ZOU Shu-yu;LIU Yu-bing(POWERCHINA SINOHYDRO ENGINEERING BUREAU 14 CO.,LTD.,Kunming 650041,China)

机构地区：[1]中国水利水电第十四工程局有限公司,云南昆明650041

出　　处：《云南水力发电》2023年第10期250-254,共5页Yunnan Water Power

摘　　要：针对南陵县城区水环境综合治理项目,需要通过建设中水回用压力管将污水处理厂集中处理后的中水提升至后港河人工湿地深度净化后补给市桥河,经过生态湿地和湿地公园处理后水质考核指标需达到地表水准V类,以满足城区市桥河、古亭河生态用水要求,达到补水活水效果。为此选择了后港河人工湿地作为研究对象,采用水平潜流人工湿地串联加上人工浮岛湿地组合工艺来对城区污水处理厂的尾水进行深度处理。经过实验测试,得出的结果是:出水COD浓度低于40 mg/L,符合GB 3838-2002标准中V类水质的要求;NH3-N浓度低于2mg/L,达到GB 3838-2002标准中V类水质的要求,这意味着它满足了设计要求。同时,该人工湿地NH3-N去除率为77.50%,COD去除率为51.76%。The comprehensive water environment management project in the urban area of Nanling County utilizes the construction of a pressure pipe for reclaimed water reuse to elevate the treated reclaimed water from the sewage treatment plant to the Hougang River artificial wetland for deep purification and supply to the Shiqiao River.After being treated with ecological wetlands and wetland parks,the water quality assessment indicators need to reach the surface level of Class V,in order to meet the ecological water use requirements of the Qiaohe and Guting rivers in the urban area and achieve the effect of replenishing water and active water.This article takes the artificial wetland of Ganghe River as the research object,and adopts the combination process of horizontal subsurface flow artificial wetland series connection and artificial floating island wetland to deeply treat the tail water of urban sewage treatment plants.After experimental testing,the results show that the COD concentration in the effluent is less than 40 mg/L,which meets the requirements of Class V water quality in the GB 3838-2002 standard.The concentration of NH3-N is below 2 mg/L,meeting the requirements of Class V water quality in GB 3838-2002 standard,which means it meets the design requirements.Meanwhile,the NH3-N removal rate of the constructed wetland is 77.50%,and the COD removal rate is 51.76%.

关 键 词：水环境治理 人工湿地 处理技术 水生植物 污水厂尾水 水质监测 

分 类 号：TU992.3[建筑科学—市政工程]