广东省某污染河流生物接触氧化与人工湿地净化组合工艺的工程设计与优化  

Engineering Design and Optimization of Combined Process of Biological Contact Oxidation and Constructed Wetland Purification for a Polluted River in Guangdong Province

作　　者：齐超元 原效凯 李晓春 宋鹏飞 QI Chaoyuan;YUAN Xiaokai;LI Xiaochun;SONG Pengfei(Guangdong Architectural Design and Research Institute Co.,Ltd.,Guangzhou 510010,China)

机构地区：[1]广东省建筑设计研究院有限公司,广东广州510010

出　　处：《净水技术》2022年第11期144-153,共10页Water Purification Technology

摘　　要：为探索人工湿地在河湖流域治理方面的更佳应用方式,以广东某流域人工湿地为例,本项目污水处理工艺采用“预处理+生物接触氧化+人工湿地”处理工艺。项目投产后针对出现的进水水质波动大、部分湿地区域干旱或内涝、植物生长不均、药剂投加量偏大、出水水质偶有超标等问题,通过强化生化预处理、优化人工湿地布水方式、填料层级配和植物种植搭配等措施进一步提升其处理效果稳定性。工程实践结果表明,优化后其对COD_(Cr)、氨氮、TP的平均去除率分别达到85.19%、91.37%、86.56%,COD_(Cr)、氨氮、TP出水水质稳定达到《地表水环境质量标准》(GB 3838—2002)Ⅲ类水质标准,后期运营费用约为0.62元/m3,达到合理经济的运行状态。In order to explore the better application method of constructed wetlands in the treatment of river and lake basins,a constructed wetland in a river basin in Guangdong is taken as an example,and the wastewater treatment process of this project adopts the"pretreatment+biological contact oxidation+constructed wetland"treatment process.After the project put into operation,in response to problems such as large fluctuations in the quality of influent water,drought or waterlogging in some wetland areas,uneven plant growth,excessive chemical dosage,and occasional excess water quality,the stability of the treatment effect is further improved by strengthening the biochemical pretreatment,optimizing the water distribution mode,packing hierarchy and plant planting collocation in the constructed wetland.The engineering practice results show that,after optimization,the average removal rates of COD_(Cr),ammonia nitrogen and TP reached 85.19%,91.37%and 86.56%,respectively.The effluent quality of COD_(Cr),ammonia nitrogen and TP stably reaches the classⅢwater quality standard of Environmental Quality Standards for Surface Water(GB 3838-2002),and the later operating costs is about 0.62 yuan/m3,achieving a reasonable and economical operating state.

关 键 词：人工湿地 强化生化处理 布水方式 填料级配 植物搭配 污水处理 

分 类 号：TU992[建筑科学—市政工程]