铝污泥人工湿地/活性污泥法耦合工艺的除污性能  

Coupling Process of Alum Sludge-based Constructed Wetland and Activated Sludge Process(GBR) for Enhancing Nutrients Removal

作　　者：刘然彬 赵亚乾[1,2] 

机构地区：[1]都柏林大学土木工程系Dooge水研究中心,爱尔兰 [2]西安理工大学水利水电学院,陕西西安710048

出　　处：《中国给水排水》2018年第1期7-13,共7页China Water & Wastewater

摘　　要：为改善城市水环境和地表水水质,国家出台了《水污染防治行动计划》。其中很重要的一项就是对现有污水处理厂进行提标改造,强化对氮、磷的去除。通过铝污泥人工湿地与传统活性污泥工艺的嵌套结合而研发的一种新型工艺——GBR工艺为之提供了一种新的升级思路。通过小试尝试将SBR反应器优化为GBR工艺。结果表明,在维持反应器工作容积不变的情况下,GBR工艺将反应器的最大氮负荷和水力负荷分别提高了53%和33%,而且对COD、总氮和磷的平均去除率分别高达87.7%、93.6%和95%。分析表明,铝污泥人工湿地通过磷吸附、改善污泥性状等功能实现了GBR处理能力和效率的提高。总之,GBR工艺在当下污水处理厂的提标改造中具有很大的开发应用潜力。To improve the urban water environment and surface water quality, ＂Action Plan for Prevention and Control of Water Pollution＂ had been launched by the State Council. Hereinto, one of the important plans and actions is to upgrade and retrofit the aging wastewater treatment plants （WWTPs） to enhance the nitrogen and phosphorus removal. By embedding alum sludge-based constructed wetland into the conventional activated sludge systems, a novel system named GBR was proposed to achieve the upgrading purpose. The present study managed to upgrade and retrofit a conventional SBR to GBR. The results showed that GBR enlarged the nitrogen loading rate and the hydraulic loading rate of the SBR by 53% and 33% , respectively. Meanwhile, the GBR achieved COD, TN and TP removal efficiency of 87.7%, 93.6% and 95%, respectively. Specifically, the alum sludge-based constructed wetland played a key role in the GBR by the functions of P adsorption and activated sludge-properties improvement. Overall, GBR holds high potential in the action of upgrading and reconstruction of the WWTPs.

关 键 词：污水处理 铝污泥人工湿地 提标改造 脱氮除磷 同步硝化反硝化 

分 类 号：TU992.3[建筑科学—市政工程]