现状污水处理厂改扩建工程设计优化要点  

Design and Optimization Key Points for Reconstruction and Expansion Project of Existing WWTP

作　　者：沈振中 SHEN Zhenzhong(Shanghai Municipal Engineering Design InstituteCo.,Ltd.,Shanghai 200092,China)

机构地区：[1]上海市政工程设计研究总院<集团>有限公司,上海200092

出　　处：《净水技术》2025年第1期178-184,共7页Water Purification Technology

摘　　要：【目的】为了掌握现状污水处理厂改扩建工程的难点,提出切实可行的设计优化方案,为其他类似工程提供参考。【方法】结合污水处理厂改扩建工程案例,总结提升泵房、沉砂池、生反池和污泥处理系统改扩建过程中的痛点难点,并提出针对性的解决方案和设计优化建议。【结果】进水泵房结合近远期发展,通过分格便于后期设备安装、通过进水调配实现有效配水,并结合片区雨污分流情况考虑旱雨季不同工况条件下的水泵组合情况,满足污水处理厂稳定运行要求。预处理系统构筑物数量尽量与二级处理构筑物数量一致,便于分组;确实存在不一致情况时,可以通过配水堰实现不等量配水,满足后续运行要求。在出水标准日益严格的背景下,充分挖掘生反池去除有机物、脱氮、除磷效能是最经济有效的手段,通过对现状生反池进水点位、功能布局的调整,激发生反池潜力。在污泥深度脱水的基础上增加污泥干化段,要充分评估现状脱水设备的状态及其与后续干化系统的匹配度,因地制宜地选取技术可行、经济合理的设计方案,最终实现提标或扩容的需求。【结论】污水处理厂在设计过程中要充分考虑分期建设和改扩建的需要,充分预留实施条件;在改扩建过程中要因地制宜地选择设计方案,确保污水处理厂稳定运行。[Objective]To identify the challenges in renovation and expansion of wastewater treatment plants(WWTPs),propose practical design optimization solutions,and provide references for similar projects.[Methods]By analyzing cases of WWTP renovation and expansion projects,this study summarizes the pain points and difficulties encountered during the renovation and expansion of lift stations,grit chambers,biological reaction tanks,and sludge treatment systems.Targeted solutions and design optimization suggestions are then proposed.[Results]For the lifting pump room,considering both short-term and long-term development,compartments should be created to facilitate future equipment installation,effective influent distribution should be achieved through intake allocation,and pump combinations under different dry and wet season conditions should be considered based on the rainwater and wastewater diversion situation in the area to meet the stable operation requirements of the WWTP.The number of structures in the pretreatment system should be kept consistent with the number of secondary treatment structures for easy grouping;when inconsistencies do exist,unequal water distribution can be achieved through water distribution weirs to meet subsequent operational requirements.In the context of increasingly stringent effluent standards,fully tapping the potential of biological reaction tanks for organic removal,nitrogen removal,and phosphorus removal is the most economical and effective means.By adjusting the influent points and functional layout of existing biological reaction tanks,their potential can be unleashed.When adding a sludge drying stage on top of sludge deep dewatering,it is necessary to fully assess the status of the existing dewatering equipment and its compatibility with the subsequent drying system.Based on local conditions,a technologically feasible and economically rational design scheme should be selected to ultimately meet the requirements for standard upgrading or capacity expansion.[Conclusion]During the desig

关 键 词：改扩建工程 现状污水处理厂 设计优化 生反池改造 污泥处理系统 

分 类 号：TU992[建筑科学—市政工程]